From a16a5a4102a37c1d661e985ab0f6c343927019ea Mon Sep 17 00:00:00 2001 From: Raimon Zamora Date: Thu, 12 Feb 2026 10:51:02 +0100 Subject: [PATCH] - First commit to gitea --- .gitignore | 3 + Editor.cpp | 34 + Editor.h | 19 + GUI.cpp | 941 ++++++++++ GUI.h | 6 + GUIDialogs.h | 6 + GUIDialogs.mm | 29 + GUIDraw.cpp | 75 + GUIDraw.h | 14 + GUIKeyboard.cpp | 27 + GUIKeyboard.h | 15 + GUIMouse.cpp | 72 + GUIMouse.h | 30 + GUIViewport.cpp | 3 + GUIViewport.h | 18 + Matrices.cpp | 777 ++++++++ Matrices.h | 914 +++++++++ Model.cpp | 615 +++++++ Model.h | 96 + Vectors.h | 687 +++++++ application.cpp | 41 + application.h | 10 + common.h | 14 + font.cpp | 108 ++ font.fnt | 99 + font.h | 21 + font.png | Bin 0 -> 10407 bytes geometry.cpp | 26 + geometry.h | 85 + grid.cpp | 77 + grid.h | 7 + lagueirtofile | 5 + main.cpp | 156 ++ renderer.cpp | 171 ++ renderer.h | 26 + screen.cpp | 17 + screen.h | 12 + stb_image.h | 4687 +++++++++++++++++++++++++++++++++++++++++++++++ texture.cpp | 71 + texture.h | 19 + 40 files changed, 10033 insertions(+) create mode 100755 .gitignore create mode 100644 Editor.cpp create mode 100644 Editor.h create mode 100644 GUI.cpp create mode 100644 GUI.h create mode 100644 GUIDialogs.h create mode 100644 GUIDialogs.mm create mode 100644 GUIDraw.cpp create mode 100644 GUIDraw.h create mode 100644 GUIKeyboard.cpp create mode 100644 GUIKeyboard.h create mode 100644 GUIMouse.cpp create mode 100644 GUIMouse.h create mode 100644 GUIViewport.cpp create mode 100644 GUIViewport.h create mode 100755 Matrices.cpp create mode 100755 Matrices.h create mode 100644 Model.cpp create mode 100644 Model.h create mode 100755 Vectors.h create mode 100644 application.cpp create mode 100644 application.h create mode 100644 common.h create mode 100644 font.cpp create mode 100644 font.fnt create mode 100644 font.h create mode 100644 font.png create mode 100644 geometry.cpp create mode 100644 geometry.h create mode 100644 grid.cpp create mode 100644 grid.h create mode 100644 lagueirtofile create mode 100644 main.cpp create mode 100644 renderer.cpp create mode 100644 renderer.h create mode 100644 screen.cpp create mode 100644 screen.h create mode 100644 stb_image.h create mode 100644 texture.cpp create mode 100644 texture.h diff --git a/.gitignore b/.gitignore new file mode 100755 index 0000000..bba1a12 --- /dev/null +++ b/.gitignore @@ -0,0 +1,3 @@ +build/* +biomed +biomed_debug diff --git a/Editor.cpp b/Editor.cpp new file mode 100644 index 0000000..c7e4845 --- /dev/null +++ b/Editor.cpp @@ -0,0 +1,34 @@ +#include "Editor.h" +#include "Model.h" +#include + +namespace Editor +{ + Mode mode {Mode::Cube}; + State state {State::None}; + char textureFilename[400] {"/"}; + unsigned texture {0}; + char forcedAxis {-1}; + float t {0.0f}; + uint8_t bitmap[32*32*4] {255}; + + void SetMode(const Mode value) + { + mode = value; + if (mode == Mode::Cube) { + model.SelectAllFaces(false); + } else if (mode == Mode::Face) { + model.SelectAllCubes(false); + } + } + + void SetState(const State value) + { + forcedAxis = -1; + if (state == value) { + state = State::None; + } else { + state = value; + } + } +} diff --git a/Editor.h b/Editor.h new file mode 100644 index 0000000..bba0fb8 --- /dev/null +++ b/Editor.h @@ -0,0 +1,19 @@ +#pragma once + +namespace Editor +{ + enum class Mode { Face, Cube, Anim, Paint }; + enum class State { None, Grab, Scale, Rotate, Pivot }; + + extern Mode mode; + extern State state; + extern char textureFilename[400]; + extern unsigned texture; + extern char forcedAxis; + extern float t; + + extern unsigned char bitmap[32*32*4]; + + void SetMode(const Mode value); + void SetState(const State value); +} diff --git a/GUI.cpp b/GUI.cpp new file mode 100644 index 0000000..08c9032 --- /dev/null +++ b/GUI.cpp @@ -0,0 +1,941 @@ +#include "GUI.h" + +#include "screen.h" +#include +#include "GUIDraw.h" +#include "font.h" +#include "GUIMouse.h" +#include "GUIKeyboard.h" +#include "GUIViewport.h" +#include "Model.h" +#include "renderer.h" +#include "Editor.h" +//#include "GUIDialogs.h" +#include "texture.h" +#include + +const Color winBack{30, 30, 30, 255}; +const Color panelBack{53, 53, 60, 255}; +const Color panel3DBack{40, 40, 43, 255}; +const Color textBoxBack{61, 61, 66, 255}; +const Color textBoxBorder{76, 77, 81, 255}; +const Color buttonBack{63, 63, 70, 255}; +const Color buttonPressed{62, 153, 247, 255}; + +namespace GUI +{ + Font* font {nullptr}; + float viewPos{0}; + Vector4 viewSize{0, 0, SCREEN_WIDTH, SCREEN_HEIGHT}; + Vector4 viewStack[10]; + char viewStackPos{0}; + int focus{-1}; + int id{0}; + bool dot{false}; + bool empty{false}; + + bool menuVisible {false}; + Vector2 menuPos {0, 0}; + int subMenu{-1}; + Vector2 subMenuPos {0, 0}; + + bool comboBoxVisible {false}; + + int selectedViewport {0}; + bool zoomed {false}; + + Color currentColor {0, 0, 0, 255}; + + float a = 6.5f; + float b = 12.0f; + float c = 24.0f; + + void ResetFocus() + { + focus = -1; + dot = false; + empty = false; + menuVisible = false; + } + + void StartSplitV(const float& value) + { + assert(viewStackPos < 10); + + viewPos = 0; + viewStack[viewStackPos] = viewSize; + if (value > 0) { + viewStack[viewStackPos].w -= (value + 5); + viewSize.w = value; + } else { + viewStack[viewStackPos].w = -value; + viewSize.w -= (-value + 5); + } + viewStack[viewStackPos].y = viewSize.y + viewSize.w + 5; + viewStackPos++; + } + + void StartSplitH(const float& value) + { + assert(viewStackPos < 10); + + viewPos = 0; + viewStack[viewStackPos] = viewSize; + if (value > 0) { + viewStack[viewStackPos].z -= (value + 5); + viewSize.z = value; + } else { + viewStack[viewStackPos].z = -value; + viewSize.z -= (-value + 5); + } + viewStack[viewStackPos].x = viewSize.x + viewSize.z + 5; + viewStackPos++; + } + + void NextSplit() + { + assert(viewStackPos > 0); + viewPos = 0; + viewStackPos--; + viewSize = viewStack[viewStackPos]; + } + + void DrawPanel() + { + viewPos = 0; + GUIDraw::FillRect(viewSize, panelBack); + viewSize.x += 10; + viewSize.y += 10; + viewSize.z -= 20; + viewSize.w -= 20; + } + + void Draw3DPanel(const int index) + { + if (not menuVisible and GUIMouse::position.inside(viewSize.GetPosition(), viewSize.GetSize())) { + selectedViewport = index; + if (GUIKeyboard::key == SDLK_z) { + GUIKeyboard::key = SDLK_UNKNOWN; + zoomed = not zoomed; + } + } + + const Color color = (index == selectedViewport ? Color(128, 0, 0, 255) : panel3DBack); + viewPos = 0; + GUIDraw::FillRect(viewSize, color); + viewSize.x += 5; + viewSize.y += 5; + viewSize.z -= 10; + viewSize.w -= 10; + } + + void DrawTitle(const char* title) + { + viewPos = 0; + GUIDraw::FillRect({viewSize.x, viewSize.y, viewSize.z, 25}, winBack); + Vector2 textSize = font->GetSize(title); + const float pos = (viewSize.z-5) * 0.5f - textSize.x * 0.5f; + + font->Print(viewSize.x+5+pos, viewSize.y+4, title); + + viewSize.y += 30; + viewSize.w -= 30; + } + + void DrawCaption(const char* title) + { + viewPos = 0; + font->Print(viewSize.x, viewSize.y, title); + + viewSize.y += 20; + viewSize.w -= 20; + } + + const bool DrawComboBox(char* text) + { + bool retVal = false; + Vector4 rect {viewPos+viewSize.x, viewSize.y, viewSize.z, 22}; + Color backColor = textBoxBack; + if (text != nullptr and GUIMouse::position.inside(rect.GetPosition(), rect.GetSize())) { + if (GUIMouse::buttons[GUIMouse::Button::Left] == GUIMouse::ButtonState::Down) { + retVal = true; + } + backColor = textBoxBorder; + } + GUIDraw::FillRect(rect, backColor); + GUIDraw::DrawRect(rect, textBoxBorder); + + if (text != nullptr) font->Print(viewPos+viewSize.x+5, viewSize.y+2, text, 15); + + viewPos = 0; + viewSize.y += 27; + viewSize.w -= 27; + + return retVal; + } + + void DrawTextBox(char* text) + { + Vector4 rect {viewPos+viewSize.x, viewSize.y, viewSize.z, 22}; + Color backColor = textBoxBack; + if (text != nullptr and GUIMouse::position.inside(rect.GetPosition(), rect.GetSize())) { + if (GUIMouse::buttons[GUIMouse::Button::Left] == GUIMouse::ButtonState::Down) { + focus = id; + } + backColor = textBoxBorder; + } + GUIDraw::FillRect(rect, backColor); + GUIDraw::DrawRect(rect, textBoxBorder); + + if (text != nullptr) { + char textColor = 15; + if (focus == id) { + textColor = 11; + if (GUIKeyboard::key >= SDLK_SPACE and GUIKeyboard::key <= SDLK_z) { + const size_t len = strlen(text); + if (len < 9) { + text[len] = GUIKeyboard::key; + text[len+1] = '\0'; + GUIKeyboard::key = SDLK_UNKNOWN; + } + } else if (GUIKeyboard::key == SDLK_BACKSPACE) { + GUIKeyboard::key = SDLK_UNKNOWN; + const size_t len = strlen(text); + if (len > 0) text[len-1] = '\0'; + } else if (GUIKeyboard::key == SDLK_RETURN) { + GUIKeyboard::key = SDLK_UNKNOWN; + ResetFocus(); + textColor = 15; + } else if (GUIKeyboard::key == SDLK_TAB) { + GUIKeyboard::key = SDLK_UNKNOWN; + focus++; + textColor = 15; + } + if (focus == id) { + const Vector2 size = font->GetSize(text); + font->Print(size.x+viewPos+viewSize.x+5, viewSize.y+2, "_", textColor); + } + } + font->Print(viewPos+viewSize.x+5, viewSize.y+2, text, textColor); + } + + viewPos = 0; + viewSize.y += 27; + viewSize.w -= 27; + id++; + } + + void DrawNumTextBox(float* number, const float size) + { + Vector4 rect {viewPos+viewSize.x, viewSize.y, size, 22}; + Color backColor = textBoxBack; + + if (number != nullptr and GUIMouse::position.inside(rect.GetPosition(), rect.GetSize())) { + if (GUIMouse::buttons[GUIMouse::Button::Left] == GUIMouse::ButtonState::Down) { + dot = false; + empty = false; + focus = id; + } + backColor = textBoxBorder; + } + GUIDraw::FillRect(rect, backColor); + GUIDraw::DrawRect(rect, textBoxBorder); + + if (number != nullptr) { + int i; + char s1[20]; + char* s2; + //sprintf(text, "%.f", number); + + sprintf(s1, "%f", *number); + s2 = strchr(s1, '.'); + i = int(s2 - s1); + sprintf(s1, "%.*g", (i+2), *number); + + char textColor = 15; + if (focus == id) { + textColor = 11; + if (dot) strcat(s1, "."); + if (empty) s1[0] = '\0'; + const bool dotAlready = (strchr(s1, '.') != nullptr); + if (GUIKeyboard::key >= SDLK_0 and GUIKeyboard::key <= SDLK_9) { + if (not empty and s1[0] == '0' and not (strlen(s1)>1 and s1[1] == '.' )) s1[0] = '\0'; + empty = false; + const size_t len = strlen(s1); + s1[len] = GUIKeyboard::key; + s1[len+1] = '\0'; + GUIKeyboard::key = SDLK_UNKNOWN; + } else if (not dotAlready and GUIKeyboard::key == SDLK_PERIOD) { + empty = false; + const size_t len = strlen(s1); + s1[len] = GUIKeyboard::key; + s1[len+1] = '\0'; + GUIKeyboard::key = SDLK_UNKNOWN; + } else if (GUIKeyboard::key == SDLK_BACKSPACE) { + GUIKeyboard::key = SDLK_UNKNOWN; + const size_t len = strlen(s1); + if (len == 1) empty = true; + s1[len-1] = '\0'; + } else if (GUIKeyboard::key == SDLK_RIGHT) { + GUIKeyboard::key = SDLK_UNKNOWN; + (*number)++; + sprintf(s1, "%f", *number); + s2 = strchr(s1, '.'); + i = int(s2 - s1); + sprintf(s1, "%.*g", (i+2), *number); + } else if (GUIKeyboard::key == SDLK_LEFT) { + GUIKeyboard::key = SDLK_UNKNOWN; + (*number)--; + sprintf(s1, "%f", *number); + s2 = strchr(s1, '.'); + i = int(s2 - s1); + sprintf(s1, "%.*g", (i+2), *number); + } else if (GUIKeyboard::key == SDLK_RETURN) { + GUIKeyboard::key = SDLK_UNKNOWN; + ResetFocus(); + textColor = 15; + const size_t len = strlen(s1); + if (s1[len-1] == '.') s1[len-1] = '\0'; + } else if (GUIKeyboard::key == SDLK_TAB) { + GUIKeyboard::key = SDLK_UNKNOWN; + focus++; + textColor = 15; + const size_t len = strlen(s1); + if (s1[len-1] == '.') s1[len-1] = '\0'; + } + if (focus == id) { + const size_t len = strlen(s1); + dot = (s1[len-1] == '.'); + *number = atof(s1); + + const Vector2 size = font->GetSize(s1); + font->Print(size.x+viewPos+viewSize.x+5, viewSize.y+2, "_", textColor); + } + } + font->Print(viewPos+viewSize.x+5, viewSize.y+2, s1, textColor); + } + + int numElements = viewSize.z / size; + float separation = (viewSize.z - (size*numElements)) / (numElements-1); + viewPos += size+separation; + + if (viewPos > viewSize.z) { + viewPos = 0; + viewSize.y += 27; + viewSize.w -= 27; + } + id++; + } + + void DrawViewport(const int index) + { + glViewport(viewSize.x, SCREEN_HEIGHT-(viewSize.y+viewSize.w), viewSize.z, viewSize.w); + glEnable(GL_SCISSOR_TEST); + glScissor(viewSize.x, SCREEN_HEIGHT-(viewSize.y+viewSize.w), viewSize.z, viewSize.w); + + glMatrixMode(GL_PROJECTION); + glPushMatrix(); + glLoadIdentity(); + float zoom = viewports[index].zoom; + if (zoom < 0) zoom = 1.0f/-zoom; + const float x = (viewSize.z * 0.5f) / zoom; + const float y = (viewSize.w * 0.5f) / zoom; + glOrtho(-x, x, y, -y, 1000, -1000); + + glMatrixMode(GL_MODELVIEW); + glPushMatrix(); + glLoadIdentity(); + glTranslatef(viewports[index].offset.x, viewports[index].offset.y, 0); + glRotatef(viewports[index].rotation.x, 1, 0, 0); + glRotatef(viewports[index].rotation.y, 0, 1, 0); + + + if (not menuVisible and GUIMouse::position.inside(viewSize.GetPosition(), viewSize.GetSize())) { + if (GUIMouse::buttons[GUIMouse::Button::Right] == GUIMouse::ButtonState::Down) { + menuVisible = true; + menuPos = GUIMouse::position; + } + if (not GUIKeyboard::alt and GUIMouse::buttons[GUIMouse::Button::Left] == GUIMouse::ButtonState::Down) { + if (Editor::state == Editor::State::None) { + if (Editor::mode == Editor::Mode::Paint) { + if (viewports[index].renderMode == Viewport::RenderMode::UV) { + Renderer::SetState(RENDER_FILL); + Color color = model.PickPixel(GUIMouse::position.x, GUIMouse::position.y); + Editor::bitmap[(color.x*4)+color.y*128] = currentColor.r; + Editor::bitmap[(color.x*4)+1+color.y*128] = currentColor.g; + Editor::bitmap[(color.x*4)+2+color.y*128] = currentColor.b; + Editor::bitmap[(color.x*4)+3+color.y*128] = currentColor.a; + Texture::Update(Editor::texture, 32, 32, Editor::bitmap); + + } else { + Renderer::SetState(RENDER_DEPTH | RENDER_FILL); + Color color = model.PickPaint(GUIMouse::position.x, GUIMouse::position.y); + Editor::bitmap[(color.y*4)+color.z*128] = currentColor.r; + Editor::bitmap[(color.y*4)+1+color.z*128] = currentColor.g; + Editor::bitmap[(color.y*4)+2+color.z*128] = currentColor.b; + Editor::bitmap[(color.y*4)+3+color.z*128] = currentColor.a; + Texture::Update(Editor::texture, 32, 32, Editor::bitmap); + } + } else { + Renderer::SetState(RENDER_DEPTH | RENDER_FILL); + Color color = model.Pick(GUIMouse::position.x, GUIMouse::position.y); + if (Editor::mode == Editor::Mode::Cube) { + model.SelectCube(color.r, GUIKeyboard::shift); + } else if (Editor::mode == Editor::Mode::Face) { + model.SelectFace(color.r, color.g, GUIKeyboard::shift); + } + } + } + ResetFocus(); + } + if (GUIMouse::delta.x != 0 or GUIMouse::delta.y != 0) { + if (GUIKeyboard::alt or GUIMouse::buttons[GUIMouse::Button::Middle] == GUIMouse::ButtonState::Pressed) { + if (GUIKeyboard::shift) { + viewports[index].offset += GUIMouse::delta / viewports[index].zoom; + } else { + viewports[index].rotation += Vector2(GUIMouse::delta.y, -GUIMouse::delta.x)*1; + if (viewports[index].rotation.x < -90) viewports[index].rotation.x = -90; + if (viewports[index].rotation.x > 90) viewports[index].rotation.x = 90; + } + } + } + if (GUIMouse::wheel.x != 0 or GUIMouse::wheel.y != 0) { + if (GUIKeyboard::shift) { + viewports[index].offset += GUIMouse::wheel / viewports[index].zoom; + } else { + viewports[index].zoom -= GUIMouse::wheel.y; + } + } + } + + glClearColor(float(panel3DBack.r)/255.0f, float(panel3DBack.g)/255.0f, float(panel3DBack.b)/255.0f, 1.0f); + glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); + + if (viewports[index].renderMode == Viewport::RenderMode::Solid) { + Renderer::SetState(RENDER_DEPTH | RENDER_FILL); + if (viewports[index].light) Renderer::Light(ON); + model.DrawSolid(); + } else if (viewports[index].renderMode == Viewport::RenderMode::Textured) { + Renderer::SetState(RENDER_DEPTH | RENDER_FILL | RENDER_TEXTURE); + if (viewports[index].light) Renderer::Light(ON); + glBindTexture(GL_TEXTURE_2D, Editor::texture); + model.DrawSolid(); + } else if (viewports[index].renderMode == Viewport::RenderMode::Wire) { + Renderer::SetState(RENDER_DEPTH); + model.DrawWire(); + } else if (viewports[index].renderMode == Viewport::RenderMode::UV) { + Renderer::SetState(RENDER_FILL | RENDER_TEXTURE); + glBindTexture(GL_TEXTURE_2D, Editor::texture); + model.DrawUV(); + } + + glDisable(GL_SCISSOR_TEST); + glMatrixMode(GL_PROJECTION); + glPopMatrix(); + glMatrixMode(GL_MODELVIEW); + glPopMatrix(); + + glViewport(0, 0, SCREEN_WIDTH, SCREEN_HEIGHT); + } + + const bool DrawButton(const char* text, const SDL_Keycode key, const bool state, const float size = 85) + { + Vector4 rect {viewPos+viewSize.x, viewSize.y, size, 22}; + Color backColor = buttonBack; + Color borders[4] = {textBoxBorder, winBack, winBack, textBoxBorder}; + bool retVal {false}; + ivec2 textPadding {5,2}; + + if (state) { + backColor = textBoxBorder; + borders[0] = borders[3] = winBack; + borders[1] = borders[2] = textBoxBorder; + textPadding += {1,1}; + } + + if (GUIMouse::position.inside(rect.GetPosition(), rect.GetSize())) { + if (GUIMouse::buttons[GUIMouse::Button::Left] == GUIMouse::ButtonState::Pressed) { + borders[0] = borders[3] = winBack; + borders[1] = borders[2] = textBoxBorder; + textPadding += {1,1}; + } + if (GUIMouse::buttons[GUIMouse::Button::Left] == GUIMouse::ButtonState::Up) { + borders[0] = borders[3] = winBack; + borders[1] = borders[2] = textBoxBorder; + textPadding += {1,1}; + ResetFocus(); + retVal = true; + } + backColor = textBoxBorder; + } + if (focus == -1 and key != SDLK_UNKNOWN and GUIKeyboard::key == key) { + ResetFocus(); + retVal = true; + } + + GUIDraw::FillRect({viewPos+viewSize.x, viewSize.y, size, 22}, backColor); + GUIDraw::DrawRect({viewPos+viewSize.x, viewSize.y, size, 22}, borders); + font->Print(viewPos+viewSize.x+textPadding.x, viewSize.y+textPadding.y, text, 15); + + int numElements = viewSize.z / size; + float separation = (viewSize.z - (size*numElements)) / (numElements-1); + viewPos += size+separation; + + if (viewPos > viewSize.z) { + viewPos = 0; + viewSize.y += 27; + viewSize.w -= 27; + } + //id++; + + return retVal; + } + + void DrawStaticTextBox(const char* text, const float size = 85) + { + Vector4 rect {viewPos+viewSize.x, viewSize.y, size, 22}; + GUIDraw::FillRect(rect, textBoxBack); + GUIDraw::DrawRect(rect, textBoxBorder); + font->Print(viewPos+viewSize.x+5, viewSize.y+2, text, 7); + + viewPos += size+10; + + if (viewPos > viewSize.z) { + viewPos = 0; + viewSize.y += 27; + viewSize.w -= 27; + } + } + + void DrawSpace(const int space) + { + viewPos = 0; + viewSize.y += space; + viewSize.w -= space; + } + + void Reset() + { + if (font == nullptr) { + font = new Font(); + font->Load("font"); + } + glViewport(0, 0, SCREEN_WIDTH, SCREEN_HEIGHT); + glMatrixMode(GL_PROJECTION); + glLoadIdentity(); + glOrtho(0, SCREEN_WIDTH, SCREEN_HEIGHT, 0, 100, -100); + + glMatrixMode(GL_MODELVIEW); + glLoadIdentity(); + + viewStackPos = 0; + viewPos = 0; + viewSize = {0, 0, SCREEN_WIDTH, SCREEN_HEIGHT}; + id = 0; + } + + void DrawMenu(const int numItems, const float size) + { + viewSize = Vector4(menuPos.x, menuPos.y, size, 25*numItems); + if (menuPos.x+size > SCREEN_WIDTH) viewSize.x = SCREEN_WIDTH - size; + if (menuPos.y+25*numItems > SCREEN_HEIGHT) viewSize.y = SCREEN_HEIGHT - 25*numItems; + + GUIDraw::FillRect(viewSize, panelBack); + GUIDraw::DrawRect(viewSize, winBack); + if (GUIMouse::buttons[GUIMouse::Button::Left] == GUIMouse::ButtonState::Down) { + if (not GUIMouse::position.inside(viewSize.GetPosition(), viewSize.GetSize())) { + ResetFocus(); + } + } + } + + void DrawSubMenu(const int numItems, const float size) + { + viewSize = Vector4(subMenuPos.x, subMenuPos.y, size, 25*numItems); + if (subMenuPos.x+size > SCREEN_WIDTH) viewSize.x = subMenuPos.x - (size*2); + if (subMenuPos.y+25*numItems > SCREEN_HEIGHT) viewSize.y = SCREEN_HEIGHT - 25*numItems; + + GUIDraw::FillRect(viewSize, panelBack); + GUIDraw::DrawRect(viewSize, winBack); + if (GUIMouse::buttons[GUIMouse::Button::Left] == GUIMouse::ButtonState::Down) { + if (not GUIMouse::position.inside(viewSize.GetPosition(), viewSize.GetSize())) { + ResetFocus(); + } + } + } + + const bool DrawMenuItem(const char* text, const bool state) + { + bool retVal = false; + Vector4 rect {viewSize.x, viewSize.y, viewSize.z, 25}; + if (GUIMouse::position.inside(rect.GetPosition(), rect.GetSize())) { + subMenu = -1; + GUIDraw::FillRect(rect, textBoxBack); + if (GUIMouse::buttons[GUIMouse::Button::Left] == GUIMouse::ButtonState::Down) { + retVal = true; + menuVisible = false; + comboBoxVisible = false; + } + } + if (state) font->Print(viewSize.x+3, viewSize.y+2, "+", 15); + font->Print(viewSize.x+13, viewSize.y+2, text, 15); + + viewSize.y += 25; + viewSize.w -= 25; + + return retVal; + } + + void DrawMenuSubItem(const char* text, const int subMenuIndex) + { + Vector4 rect {viewSize.x, viewSize.y, viewSize.z, 25}; + if (GUIMouse::position.inside(rect.GetPosition(), rect.GetSize())) { + GUIDraw::FillRect(rect, textBoxBack); + subMenu = subMenuIndex; + subMenuPos = Vector2(viewSize.x+viewSize.z, viewSize.y); + } else if (subMenu == subMenuIndex) { + GUIDraw::FillRect(rect, textBoxBack); + } + + font->Print(viewSize.x+viewSize.z-13, viewSize.y+2, ">", 15); + font->Print(viewSize.x+13, viewSize.y+2, text, 15); + + viewSize.y += 25; + viewSize.w -= 25; + } + + const bool DrawSubMenuItem(const char* text, const bool state) + { + bool retVal = false; + Vector4 rect {viewSize.x, viewSize.y, viewSize.z, 25}; + if (GUIMouse::position.inside(rect.GetPosition(), rect.GetSize())) { + GUIDraw::FillRect(rect, textBoxBack); + if (GUIMouse::buttons[GUIMouse::Button::Left] == GUIMouse::ButtonState::Down) { + retVal = true; + menuVisible = false; + } + } + if (state) font->Print(viewSize.x+3, viewSize.y+2, "+", 15); + font->Print(viewSize.x+13, viewSize.y+2, text, 15); + + viewSize.y += 25; + viewSize.w -= 25; + + return retVal; + } + + + Vector2 GetTransformedAxesUV(const float x, const float y) + { + Vector2 result {x, y}; + if (Editor::forcedAxis == 0) result.y = 0; + else if (Editor::forcedAxis == 1) result.x = 0; + return result; + } + + Vector3 GetTransformedAxes(const float x, const float y) + { + Vector3 result {0, 0, 0}; + + if (Editor::forcedAxis == 0) { + result.x = x + y; + result.y = 0; + result.z = 0; + } else if (Editor::forcedAxis == 1) { + result.x = 0; + result.y = x + y; + result.z = 0; + } else if (Editor::forcedAxis == 2) { + result.x = 0; + result.y = 0; + result.z = x + y; + } else { + float rx = viewports[selectedViewport].rotation.x; while (rx >= 360) rx -= 360; while (rx < 0) rx += 360; + float ry = viewports[selectedViewport].rotation.y; while (ry >= 360) ry -= 360; while (ry < 0) ry += 360; + if (rx <= 45 or rx >= 315 ) { + if (ry <= 45 or ry >= 315) { + // x, y + result.x = x; + result.y = y; + } else if (ry > 45 and ry < 135) { + // z, y + result.z = x; + result.y = y; + } else if (ry >= 135 and ry < 225) { + // -x, y + result.x = -x; + result.y = y; + } else { + // -z, y + result.z = -x; + result.y = y; + } + } else if (rx > 45 and rx < 180) { + if (ry <= 45 or ry >= 315) { + // x, -z + result.x = x; + result.z = -y; + } else if (ry > 45 and ry < 135) { + // z, x + result.z = x; + result.x = y; + } else if (ry >= 135 and ry < 225) { + // -x, z + result.x = -x; + result.z = y; + } else { + // -z, -x + result.z = -x; + result.x = -y; + } + } else { + if (ry <= 45 or ry >= 315) { + // x, z + result.x = x; + result.z = y; + } else if (ry > 45 and ry < 135) { + // -z, x + result.z = x; + result.x = -y; + } else if (ry >= 135 and ry < 225) { + // -x, -z + result.x = -x; + result.z = -y; + } else { + // z, -x + result.z = -x; + result.x = y; + } + } + } + return result; + } + + void Draw() + { + if (Editor::state != Editor::State::None) { + if (Editor::mode == Editor::Mode::Face) { + if (GUIKeyboard::key == SDLK_x) { Editor::forcedAxis = 0; GUIKeyboard::key = SDLK_UNKNOWN; } + if (GUIKeyboard::key == SDLK_y) { Editor::forcedAxis = 1; GUIKeyboard::key = SDLK_UNKNOWN; } + if (GUIMouse::slowDelta.x != 0 or GUIMouse::slowDelta.y != 0) { + Vector2 axes = GetTransformedAxesUV(GUIMouse::slowDelta.x, GUIMouse::slowDelta.y); + if (Editor::state == Editor::State::Grab) model.GrabFaces(axes.x, axes.y); + if (Editor::state == Editor::State::Scale) model.ScaleFaces(axes.x, axes.y); + } + } else if (Editor::mode == Editor::Mode::Cube) { + if (GUIKeyboard::key == SDLK_x) { Editor::forcedAxis = 0; GUIKeyboard::key = SDLK_UNKNOWN; } + if (GUIKeyboard::key == SDLK_y) { Editor::forcedAxis = 1; GUIKeyboard::key = SDLK_UNKNOWN; } + if (GUIKeyboard::key == SDLK_z) { Editor::forcedAxis = 2; GUIKeyboard::key = SDLK_UNKNOWN; } + if (GUIMouse::slowDelta.x != 0 or GUIMouse::slowDelta.y != 0) { + Vector3 axes = GetTransformedAxes(GUIMouse::slowDelta.x, GUIMouse::slowDelta.y); + if (Editor::state == Editor::State::Grab) model.GrabCubes(axes.x, axes.y, axes.z); + if (Editor::state == Editor::State::Scale) model.ScaleCubes(axes.x, axes.y, axes.z); + } + } + } + + Reset(); + //model.cubes[0].selected = true; + + StartSplitV(30); //TOOLBAR + + DrawPanel(); + + NextSplit(); + StartSplitV(-30); + StartSplitH(200); + // INFO PANEL + DrawPanel(); + DrawTitle("State"); + if (DrawButton("Cubes", SDLK_1, Editor::mode == Editor::Mode::Cube)) Editor::SetMode(Editor::Mode::Cube); + if (DrawButton("Faces", SDLK_2, Editor::mode == Editor::Mode::Face)) Editor::SetMode(Editor::Mode::Face); + if (DrawButton("Paint", SDLK_3, Editor::mode == Editor::Mode::Paint)) Editor::SetMode(Editor::Mode::Paint); + if (DrawButton("Anim", SDLK_4, Editor::mode == Editor::Mode::Anim)) Editor::SetMode(Editor::Mode::Anim); + + DrawSpace(20); + if (Editor::mode == Editor::Mode::Cube) { + int index = model.GetSelectedCube(); + DrawTitle("Cube Info"); + DrawCaption("Name:"); + DrawTextBox(index != -1 ? model.cubes[index].name : nullptr); + + float* v[9] = {nullptr}; + if (index != -1) { + v[0] = &model.cubes[index].position.x; + v[1] = &model.cubes[index].position.y; + v[2] = &model.cubes[index].position.z; + v[3] = &model.cubes[index].size.x; + v[4] = &model.cubes[index].size.y; + v[5] = &model.cubes[index].size.z; + v[6] = &model.cubes[index].pivot.x; + v[7] = &model.cubes[index].pivot.y; + v[8] = &model.cubes[index].pivot.z; + } + DrawCaption("Position:"); + DrawNumTextBox(v[0], 50); + DrawNumTextBox(v[1], 50); + DrawNumTextBox(v[2], 50); + DrawCaption("Size:"); + DrawNumTextBox(v[3], 50); + DrawNumTextBox(v[4], 50); + DrawNumTextBox(v[5], 50); + DrawCaption("Pivot:"); + DrawNumTextBox(v[6], 50); + DrawNumTextBox(v[7], 50); + DrawNumTextBox(v[8], 50); + DrawCaption("Parent:"); + char parent[10] = ""; + if (index != -1 and model.cubes[index].parent != -1) strcpy(parent, model.cubes[model.cubes[index].parent].name); + if (DrawComboBox(index != -1 ? parent : nullptr)) { + comboBoxVisible = not comboBoxVisible; + if (comboBoxVisible) { + subMenuPos.x = viewSize.z; + menuPos = {viewSize.x, viewSize.y}; + } + } + + DrawSpace(20); + DrawTitle("Cube Ops"); + if (DrawButton("New", SDLK_n, false)) model.NewCube(); + if (DrawButton("Delete", SDLK_BACKSPACE, false)) model.DeleteCube(); + if (DrawButton("Dup", SDLK_d, false)) { + model.DupCube(); + Editor::SetState(Editor::State::Grab); + } + if (DrawButton("Grab", SDLK_g, Editor::state == Editor::State::Grab)) Editor::SetState(Editor::State::Grab); + if (DrawButton("Scale", SDLK_s, Editor::state == Editor::State::Scale)) Editor::SetState(Editor::State::Scale); + if (DrawButton("Pivot", SDLK_p, Editor::state == Editor::State::Pivot)) Editor::SetState(Editor::State::Pivot); + + } else if (Editor::mode == Editor::Mode::Face) { + DrawTitle("Face Info"); + float* v[8] = {nullptr}; + ivec2 index = model.GetSelectedFace(); + if (index.x != -1) { + v[0] = &model.cubes[index.x].faces[index.y].uv[2].x; + v[1] = &model.cubes[index.x].faces[index.y].uv[2].y; + v[2] = &model.cubes[index.x].faces[index.y].uv[1].x; + v[3] = &model.cubes[index.x].faces[index.y].uv[1].y; + v[4] = &model.cubes[index.x].faces[index.y].uv[3].x; + v[5] = &model.cubes[index.x].faces[index.y].uv[3].y; + v[6] = &model.cubes[index.x].faces[index.y].uv[0].x; + v[7] = &model.cubes[index.x].faces[index.y].uv[0].y; + } + DrawCaption("UV:"); + DrawNumTextBox(v[0], 42); + DrawNumTextBox(v[1], 42); + DrawNumTextBox(v[2], 42); + DrawNumTextBox(v[3], 42); + DrawNumTextBox(v[4], 42); + DrawNumTextBox(v[5], 42); + DrawNumTextBox(v[6], 42); + DrawNumTextBox(v[7], 42); + + DrawSpace(20); + DrawTitle("Face Ops"); + if (DrawButton("Clear", SDLK_c, false)) model.ClearFaces(); + if (DrawButton("Rotate", SDLK_r, false)) model.RotateFaces(); + if (DrawButton("FlipH", SDLK_h, false)) model.FlipHFaces(); + if (DrawButton("FlipV", SDLK_v, false)) model.FlipVFaces(); + if (DrawButton("Grab", SDLK_g, Editor::state == Editor::State::Grab)) Editor::SetState(Editor::State::Grab); + if (DrawButton("Scale", SDLK_s, Editor::state == Editor::State::Scale)) Editor::SetState(Editor::State::Scale); + + } + DrawSpace(20); + DrawTitle("Texture"); + char* shortPath = strrchr(Editor::textureFilename, '/')+1; + DrawStaticTextBox(shortPath, 145); + if (DrawButton("...", SDLK_UNKNOWN, false, 25)) { + char oldPath[400]; + strcpy(oldPath, Editor::textureFilename); + const char* path = nullptr;//GUIDialogs::ChooseFile(); + if (path != nullptr) { + strcpy(Editor::textureFilename, path); + //free(path); + uint8_t* data = Texture::Load(Editor::textureFilename); + if (data == nullptr) { + SDL_ShowSimpleMessageBox(SDL_MESSAGEBOX_ERROR, "Error", "File is not a correct PNG!", nullptr); + strcpy(Editor::textureFilename, oldPath); + } else { + memcpy(Editor::bitmap, data, 32*32*4); + free(data); + Texture::Update(Editor::texture, 32, 32, Editor::bitmap); + } + } + } + + NextSplit(); + // 3D VIEWS + if (zoomed) { + Draw3DPanel(selectedViewport); + DrawViewport(selectedViewport); + } else { + StartSplitH(2.0f*viewSize.z/3.0f); + Draw3DPanel(0); + DrawViewport(0); + NextSplit(); + StartSplitV(viewSize.w/2.0f); + Draw3DPanel(1); + DrawViewport(1); + NextSplit(); + Draw3DPanel(2); + DrawViewport(2); + } + NextSplit(); + // STATUS BAR + DrawPanel(); + + if (comboBoxVisible) { + int numItems = model.numCubes; + DrawMenu(numItems, subMenuPos.x); + int sel = model.GetSelectedCube(); + for (int i = 0; i < model.numCubes; i++) { + if (i != sel and DrawMenuItem(model.cubes[i].name, model.cubes[sel].parent == i)) model.cubes[sel].parent = i; + } + if (DrawMenuItem("", model.cubes[sel].parent == -1)) model.cubes[sel].parent = -1; + } + + if (menuVisible) { + DrawMenu(6, 120); + DrawMenuSubItem("Render", 0); + DrawMenuSubItem("View", 1); + DrawMenuSubItem("Projection", 2); + if (DrawMenuItem("Light", viewports[selectedViewport].light)) viewports[selectedViewport].light = not viewports[selectedViewport].light; + if (DrawMenuItem("Grid", viewports[selectedViewport].grid)) viewports[selectedViewport].grid = not viewports[selectedViewport].grid; + if (DrawMenuItem("Zoomed", zoomed)) zoomed = not zoomed; + + if (subMenu == 0) { + DrawSubMenu(4, 120); + if (DrawSubMenuItem("Wire", viewports[selectedViewport].renderMode == Viewport::RenderMode::Wire)) viewports[selectedViewport].renderMode = Viewport::RenderMode::Wire; + if (DrawSubMenuItem("Solid", viewports[selectedViewport].renderMode == Viewport::RenderMode::Solid)) viewports[selectedViewport].renderMode = Viewport::RenderMode::Solid; + if (DrawSubMenuItem("Textured", viewports[selectedViewport].renderMode == Viewport::RenderMode::Textured)) viewports[selectedViewport].renderMode = Viewport::RenderMode::Textured; + if (DrawSubMenuItem("UV", viewports[selectedViewport].renderMode == Viewport::RenderMode::UV)) viewports[selectedViewport].renderMode = Viewport::RenderMode::UV; + } else if (subMenu == 1) { + DrawSubMenu(6, 120); + if (DrawSubMenuItem("Front", viewports[selectedViewport].rotation.x == 0 and viewports[selectedViewport].rotation.y == 0)) { + viewports[selectedViewport].rotation.x = 0; + viewports[selectedViewport].rotation.y = 0; + } + DrawSubMenuItem("Left", false); + DrawSubMenuItem("Top", false); + DrawSubMenuItem("Back", false); + DrawSubMenuItem("Right", false); + DrawSubMenuItem("Bottom", false); + } else if (subMenu == 2) { + DrawSubMenu(2, 120); + DrawSubMenuItem("Orthogonal", true); + DrawSubMenuItem("Perspective", false); + } + } + + if (Editor::state != Editor::State::None) { + if (GUIKeyboard::key == SDLK_RETURN) { + GUIKeyboard::key = SDLK_UNKNOWN; + Editor::SetState(Editor::State::None); + } + if (GUIMouse::buttons[GUIMouse::Button::Left] == GUIMouse::ButtonState::Down) { + Editor::SetState(Editor::State::None); + } + } + + } +} diff --git a/GUI.h b/GUI.h new file mode 100644 index 0000000..01abad6 --- /dev/null +++ b/GUI.h @@ -0,0 +1,6 @@ +#pragma once + +namespace GUI +{ + void Draw(); +} diff --git a/GUIDialogs.h b/GUIDialogs.h new file mode 100644 index 0000000..24fce37 --- /dev/null +++ b/GUIDialogs.h @@ -0,0 +1,6 @@ +#pragma once + +namespace GUIDialogs +{ + char* ChooseFile(); +} diff --git a/GUIDialogs.mm b/GUIDialogs.mm new file mode 100644 index 0000000..34dea2e --- /dev/null +++ b/GUIDialogs.mm @@ -0,0 +1,29 @@ +#include "GUIDialogs.h" + +#import + +namespace GUIDialogs +{ + char* ChooseFile() + { + NSWindow *keyWindow = [NSApp keyWindow]; + char* path = nullptr; + NSOpenPanel *panel = [NSOpenPanel openPanel]; + [panel setCanChooseFiles:YES]; + [panel setCanChooseDirectories:NO]; + [panel setAllowsMultipleSelection:NO]; + + NSInteger clicked = [panel runModal]; + + if (clicked == NSFileHandlingPanelOKButton) { + for (NSURL *url in [panel URLs]) { + path = strdup([url fileSystemRepresentation]); + //const char* urlPath = [url fileSystemRepresentation]; + //path = (char*)malloc(strlen(urlPath)); + //strcpy(path, urlPath); + } + } + [keyWindow makeKeyWindow]; + return path; + } +} diff --git a/GUIDraw.cpp b/GUIDraw.cpp new file mode 100644 index 0000000..7639101 --- /dev/null +++ b/GUIDraw.cpp @@ -0,0 +1,75 @@ +#include "GUIDraw.h" + +#include +#include "renderer.h" + +namespace GUIDraw +{ + void DrawLine(const Vector2& a, const Vector2& b, const Color& color) + { + Renderer::SetState(RENDER_BLEND); + glColor4ub(color.r, color.g, color.b, color.a); + glBegin(GL_LINES); + glVertex2i(a.x, a.y); + glVertex2i(b.x, b.y); + glEnd(); + } + + void DrawRect(const Vector4& rect, const Color& color) + { + Renderer::SetState(RENDER_BLEND); + glColor4ub(color.r, color.g, color.b, color.a); + glBegin(GL_LINE_LOOP); + glVertex2i(rect.x, rect.y); + glVertex2i(rect.x, rect.y+rect.w); + glVertex2i(rect.x+rect.z, rect.y+rect.w); + glVertex2i(rect.x+rect.z, rect.y); + glEnd(); + } + + void DrawRect(const Vector4& rect, const Color* colors) + { + Renderer::SetState(RENDER_BLEND); + glBegin(GL_LINES); + glColor4ub(colors[0].r, colors[0].g, colors[0].b, colors[0].a); + glVertex2i(rect.x, rect.y); + glVertex2i(rect.x, rect.y+rect.w); + glColor4ub(colors[1].r, colors[1].g, colors[1].b, colors[1].a); + glVertex2i(rect.x, rect.y+rect.w); + glVertex2i(rect.x+rect.z, rect.y+rect.w); + glColor4ub(colors[2].r, colors[2].g, colors[2].b, colors[2].a); + glVertex2i(rect.x+rect.z, rect.y+rect.w); + glVertex2i(rect.x+rect.z, rect.y); + glColor4ub(colors[3].r, colors[3].g, colors[3].b, colors[3].a); + glVertex2i(rect.x+rect.z, rect.y); + glVertex2i(rect.x, rect.y); + glEnd(); + } + + void FillRect(const Vector4& rect, const Color& color) + { + Renderer::SetState(RENDER_BLEND | RENDER_FILL); + glColor4ub(color.r, color.g, color.b, color.a); + glBegin(GL_QUADS); + glVertex2i(rect.x, rect.y); + glVertex2i(rect.x, rect.y+rect.w); + glVertex2i(rect.x+rect.z, rect.y+rect.w); + glVertex2i(rect.x+rect.z, rect.y); + glEnd(); + } + + void FillRect(const Vector4& rect, const Color* colors) + { + Renderer::SetState(RENDER_BLEND | RENDER_FILL); + glBegin(GL_QUADS); + glColor4ub(colors[0].r, colors[0].g, colors[0].b, colors[0].a); + glVertex2i(rect.x, rect.y); + glColor4ub(colors[1].r, colors[1].g, colors[1].b, colors[1].a); + glVertex2i(rect.x, rect.y+rect.w); + glColor4ub(colors[2].r, colors[2].g, colors[2].b, colors[2].a); + glVertex2i(rect.x+rect.z, rect.y+rect.w); + glColor4ub(colors[3].r, colors[3].g, colors[3].b, colors[3].a); + glVertex2i(rect.x+rect.z, rect.y); + glEnd(); + } +} diff --git a/GUIDraw.h b/GUIDraw.h new file mode 100644 index 0000000..edd3159 --- /dev/null +++ b/GUIDraw.h @@ -0,0 +1,14 @@ +#pragma once + +#include "common.h" + +namespace GUIDraw +{ + void DrawLine(const Vector2& a, const Vector2& b, const Color& color); + void DrawRect(const Vector4& rect, const Color& color); + void DrawRect(const Vector4& rect, const Color* colors); + void FillRect(const Vector4& rect, const Color& color); + void FillRect(const Vector4& rect, const Color* colors); + + //void DrawNumTextBox(const Vector4& rect, float& num); +} diff --git a/GUIKeyboard.cpp b/GUIKeyboard.cpp new file mode 100644 index 0000000..fdb4b97 --- /dev/null +++ b/GUIKeyboard.cpp @@ -0,0 +1,27 @@ +#include "GUIKeyboard.h" + +#include "application.h" + +namespace GUIKeyboard +{ + SDL_Keycode key {SDLK_UNKNOWN}; + bool shift {false}; + bool alt {false}; + bool cmd {false}; + + void ReceiveKeyboardEvent(const SDL_Keycode key) + { + GUIKeyboard::key = key; + SDL_Keymod mod = SDL_GetModState(); + shift = ((mod & KMOD_SHIFT) != KMOD_NONE); + alt = ((mod & KMOD_ALT ) != KMOD_NONE); + cmd = ((mod & KMOD_GUI ) != KMOD_NONE); + Application::NeedsUpdate(); + } + + void Reset() + { + key = SDLK_UNKNOWN; + //shift = alt = cmd = false; + } +} diff --git a/GUIKeyboard.h b/GUIKeyboard.h new file mode 100644 index 0000000..a655ff4 --- /dev/null +++ b/GUIKeyboard.h @@ -0,0 +1,15 @@ +#pragma once + +#include "common.h" +#include + +namespace GUIKeyboard +{ + extern SDL_Keycode key; + extern bool shift; + extern bool alt; + extern bool cmd; + + void ReceiveKeyboardEvent(const SDL_Keycode key); + void Reset(); +} diff --git a/GUIMouse.cpp b/GUIMouse.cpp new file mode 100644 index 0000000..61d7223 --- /dev/null +++ b/GUIMouse.cpp @@ -0,0 +1,72 @@ +#include "GUIMouse.h" + +#include "application.h" + +namespace GUIMouse +{ + Vector2 position {0, 0}; + Vector2 delta {0, 0}; + Vector2 slowDelta {0, 0}; + Vector2 wheel {0, 0}; + ButtonState buttons[3] {ButtonState::Released, ButtonState::Released, ButtonState::Released}; + Gesture gesture {}; + + Vector2 slowAccum {0, 0}; + + void ReceiveMouseUpEvent(const Button button) + { + buttons[button] = ButtonState::Up; + Application::NeedsUpdate(); + } + + void ReceiveMouseDownEvent(const Button button) + { + buttons[button] = ButtonState::Down; + Application::NeedsUpdate(); + } + + void ReceiveMouseMoveEvent(const float x, const float y) + { + delta = {x-position.x, y-position.y}; + slowAccum += delta * 0.2f; + if (slowAccum.x >= 1 or slowAccum.x <= -1) { + slowDelta.x = int(slowAccum.x); + slowAccum.x = slowAccum.x - int(slowAccum.x); + } + if (slowAccum.y >= 1 or slowAccum.y <= -1) { + slowDelta.y = int(slowAccum.y); + slowAccum.y = slowAccum.y - int(slowAccum.y); + } + position = Vector2(x, y); + Application::NeedsUpdate(); + } + + void ReceiveMouseWheelEvent(const float x, const float y) + { + wheel = Vector2(x, y); + Application::NeedsUpdate(); + } + + void ReceiveMultigestureEvent(const float theta, const float dist, const int numFingers) + { + gesture.theta = theta; + gesture.dist = dist; + gesture.numFingers = numFingers; + Application::NeedsUpdate(); + } + + void Reset() + { + for (int i = 0; i < 3; i++) { + if (buttons[i] == ButtonState::Down) { + buttons[i] = ButtonState::Pressed; + } else if (buttons[i] == ButtonState::Up) { + buttons[i] = ButtonState::Released; + } + } + wheel = {0,0}; + delta = {0,0}; + slowDelta = {0,0}; + gesture.theta = gesture.dist = gesture.numFingers = 0; + } +} diff --git a/GUIMouse.h b/GUIMouse.h new file mode 100644 index 0000000..a2f3d54 --- /dev/null +++ b/GUIMouse.h @@ -0,0 +1,30 @@ +#pragma once + +#include "common.h" + +namespace GUIMouse +{ + enum class ButtonState { Released, Down, Pressed, Up }; + enum Button : char { Left = 0, Right = 1, Middle = 2 }; + + struct Gesture + { + float theta {0}; + float dist {0}; + int numFingers {0}; + }; + + extern Vector2 position; + extern Vector2 delta; + extern Vector2 slowDelta; + extern Vector2 wheel; + extern ButtonState buttons[3]; + extern Gesture gesture; + + void ReceiveMouseUpEvent(const Button button); + void ReceiveMouseDownEvent(const Button button); + void ReceiveMouseMoveEvent(const float x, const float y); + void ReceiveMouseWheelEvent(const float x, const float y); + void ReceiveMultigestureEvent(const float theta, const float dist, const int numFingers); + void Reset(); +} diff --git a/GUIViewport.cpp b/GUIViewport.cpp new file mode 100644 index 0000000..ee7908d --- /dev/null +++ b/GUIViewport.cpp @@ -0,0 +1,3 @@ +#include "GUIViewport.h" + +Viewport viewports[3]; diff --git a/GUIViewport.h b/GUIViewport.h new file mode 100644 index 0000000..04aaa67 --- /dev/null +++ b/GUIViewport.h @@ -0,0 +1,18 @@ +#pragma once + +#include "common.h" + +struct Viewport +{ + enum RenderMode { Wire, Solid, Textured, UV }; + + Vector4 bounds {}; + RenderMode renderMode {Solid}; + Vector2 offset {0, 0}; + Vector2 rotation {10, 20}; + float zoom {10.0f}; + bool light {true}; + bool grid {true}; +}; + +extern Viewport viewports[3]; diff --git a/Matrices.cpp b/Matrices.cpp new file mode 100755 index 0000000..929c392 --- /dev/null +++ b/Matrices.cpp @@ -0,0 +1,777 @@ +/////////////////////////////////////////////////////////////////////////////// +// Matrice.cpp +// =========== +// NxN Matrix Math classes +// +// The elements of the matrix are stored as column major order. +// | 0 2 | | 0 3 6 | | 0 4 8 12 | +// | 1 3 | | 1 4 7 | | 1 5 9 13 | +// | 2 5 8 | | 2 6 10 14 | +// | 3 7 11 15 | +// +// AUTHOR: Song Ho Ahn (song.ahn@gmail.com) +// CREATED: 2005-06-24 +// UPDATED: 2014-09-21 +// +// Copyright (C) 2005 Song Ho Ahn +/////////////////////////////////////////////////////////////////////////////// + +#include +#include +#include "Matrices.h" + +const float DEG2RAD = 3.141593f / 180; +const float EPSILON = 0.00001f; + +bool closeEnough(const float& a, const float& b, const float& epsilon = std::numeric_limits::epsilon()) { + return (epsilon > std::abs(a - b)); +} + + +/////////////////////////////////////////////////////////////////////////////// +// transpose 2x2 matrix +/////////////////////////////////////////////////////////////////////////////// +Matrix2& Matrix2::transpose() +{ + std::swap(m[1], m[2]); + return *this; +} + + + +/////////////////////////////////////////////////////////////////////////////// +// return the determinant of 2x2 matrix +/////////////////////////////////////////////////////////////////////////////// +float Matrix2::getDeterminant() +{ + return m[0] * m[3] - m[1] * m[2]; +} + + + +/////////////////////////////////////////////////////////////////////////////// +// inverse of 2x2 matrix +// If cannot find inverse, set identity matrix +/////////////////////////////////////////////////////////////////////////////// +Matrix2& Matrix2::invert() +{ + float determinant = getDeterminant(); + if(fabs(determinant) <= EPSILON) + { + return identity(); + } + + float tmp = m[0]; // copy the first element + float invDeterminant = 1.0f / determinant; + m[0] = invDeterminant * m[3]; + m[1] = -invDeterminant * m[1]; + m[2] = -invDeterminant * m[2]; + m[3] = invDeterminant * tmp; + + return *this; +} + + + +/////////////////////////////////////////////////////////////////////////////// +// transpose 3x3 matrix +/////////////////////////////////////////////////////////////////////////////// +Matrix3& Matrix3::transpose() +{ + std::swap(m[1], m[3]); + std::swap(m[2], m[6]); + std::swap(m[5], m[7]); + + return *this; +} + + + +/////////////////////////////////////////////////////////////////////////////// +// return determinant of 3x3 matrix +/////////////////////////////////////////////////////////////////////////////// +float Matrix3::getDeterminant() +{ + return m[0] * (m[4] * m[8] - m[5] * m[7]) - + m[1] * (m[3] * m[8] - m[5] * m[6]) + + m[2] * (m[3] * m[7] - m[4] * m[6]); +} + + + +/////////////////////////////////////////////////////////////////////////////// +// inverse 3x3 matrix +// If cannot find inverse, set identity matrix +/////////////////////////////////////////////////////////////////////////////// +Matrix3& Matrix3::invert() +{ + float determinant, invDeterminant; + float tmp[9]; + + tmp[0] = m[4] * m[8] - m[5] * m[7]; + tmp[1] = m[2] * m[7] - m[1] * m[8]; + tmp[2] = m[1] * m[5] - m[2] * m[4]; + tmp[3] = m[5] * m[6] - m[3] * m[8]; + tmp[4] = m[0] * m[8] - m[2] * m[6]; + tmp[5] = m[2] * m[3] - m[0] * m[5]; + tmp[6] = m[3] * m[7] - m[4] * m[6]; + tmp[7] = m[1] * m[6] - m[0] * m[7]; + tmp[8] = m[0] * m[4] - m[1] * m[3]; + + // check determinant if it is 0 + determinant = m[0] * tmp[0] + m[1] * tmp[3] + m[2] * tmp[6]; + if(fabs(determinant) <= EPSILON) + { + return identity(); // cannot inverse, make it idenety matrix + } + + // divide by the determinant + invDeterminant = 1.0f / determinant; + m[0] = invDeterminant * tmp[0]; + m[1] = invDeterminant * tmp[1]; + m[2] = invDeterminant * tmp[2]; + m[3] = invDeterminant * tmp[3]; + m[4] = invDeterminant * tmp[4]; + m[5] = invDeterminant * tmp[5]; + m[6] = invDeterminant * tmp[6]; + m[7] = invDeterminant * tmp[7]; + m[8] = invDeterminant * tmp[8]; + + return *this; +} + +#define RAD2DEG 57.2957795f + +const Vector3 Matrix4::eulerAngles() { + + //check for gimbal lock + if (closeEnough(m[0+2*4], -1.0f)) { + float x = 0; //gimbal lock, value of x doesn't matter + float y = M_PI / 2; + float z = x + atan2(m[1+0*4], m[2+0*4]); + return { -x*RAD2DEG, -y*RAD2DEG, -z*RAD2DEG }; + } else if (closeEnough(m[0+2*4], 1.0f)) { + float x = 0; + float y = -M_PI / 2; + float z = -x + atan2(-m[1+0*4], -m[2+0*4]); + return { -x*RAD2DEG, -y*RAD2DEG, -z*RAD2DEG }; + } else { //two solutions exist + float x1 = -asin(m[0+2*4]); + float x2 = M_PI - x1; + + float y1 = atan2(m[1+2*4] / cos(x1), m[2+2*4] / cos(x1)); + float y2 = atan2(m[1+2*4] / cos(x2), m[2+2*4] / cos(x2)); + + float z1 = atan2(m[0+1*4] / cos(x1), m[0+0*4] / cos(x1)); + float z2 = atan2(m[0+1*4] / cos(x2), m[0+0*4] / cos(x2)); + + //choose one solution to return + //for example the "shortest" rotation + if ((std::abs(x1) + std::abs(y1) + std::abs(z1)) <= (std::abs(x2) + std::abs(y2) + std::abs(z2))) { + return { -x1*RAD2DEG, -y1*RAD2DEG, -z1*RAD2DEG }; + } else { + return { -x2*RAD2DEG, -y2*RAD2DEG, -z2*RAD2DEG }; + } + } +} + +/////////////////////////////////////////////////////////////////////////////// +// transpose 4x4 matrix +/////////////////////////////////////////////////////////////////////////////// +Matrix4& Matrix4::transpose() +{ + std::swap(m[1], m[4]); + std::swap(m[2], m[8]); + std::swap(m[3], m[12]); + std::swap(m[6], m[9]); + std::swap(m[7], m[13]); + std::swap(m[11], m[14]); + + return *this; +} + + + +/////////////////////////////////////////////////////////////////////////////// +// inverse 4x4 matrix +/////////////////////////////////////////////////////////////////////////////// +Matrix4& Matrix4::invert() +{ + // If the 4th row is [0,0,0,1] then it is affine matrix and + // it has no projective transformation. + if(m[3] == 0 && m[7] == 0 && m[11] == 0 && m[15] == 1) + this->invertAffine(); + else + { + this->invertGeneral(); + /*@@ invertProjective() is not optimized (slower than generic one) + if(fabs(m[0]*m[5] - m[1]*m[4]) > EPSILON) + this->invertProjective(); // inverse using matrix partition + else + this->invertGeneral(); // generalized inverse + */ + } + + return *this; +} + + + +/////////////////////////////////////////////////////////////////////////////// +// compute the inverse of 4x4 Euclidean transformation matrix +// +// Euclidean transformation is translation, rotation, and reflection. +// With Euclidean transform, only the position and orientation of the object +// will be changed. Euclidean transform does not change the shape of an object +// (no scaling). Length and angle are reserved. +// +// Use inverseAffine() if the matrix has scale and shear transformation. +// +// M = [ R | T ] +// [ --+-- ] (R denotes 3x3 rotation/reflection matrix) +// [ 0 | 1 ] (T denotes 1x3 translation matrix) +// +// y = M*x -> y = R*x + T -> x = R^-1*(y - T) -> x = R^T*y - R^T*T +// (R is orthogonal, R^-1 = R^T) +// +// [ R | T ]-1 [ R^T | -R^T * T ] (R denotes 3x3 rotation matrix) +// [ --+-- ] = [ ----+--------- ] (T denotes 1x3 translation) +// [ 0 | 1 ] [ 0 | 1 ] (R^T denotes R-transpose) +/////////////////////////////////////////////////////////////////////////////// +Matrix4& Matrix4::invertEuclidean() +{ + // transpose 3x3 rotation matrix part + // | R^T | 0 | + // | ----+-- | + // | 0 | 1 | + float tmp; + tmp = m[1]; m[1] = m[4]; m[4] = tmp; + tmp = m[2]; m[2] = m[8]; m[8] = tmp; + tmp = m[6]; m[6] = m[9]; m[9] = tmp; + + // compute translation part -R^T * T + // | 0 | -R^T x | + // | --+------- | + // | 0 | 0 | + float x = m[12]; + float y = m[13]; + float z = m[14]; + m[12] = -(m[0] * x + m[4] * y + m[8] * z); + m[13] = -(m[1] * x + m[5] * y + m[9] * z); + m[14] = -(m[2] * x + m[6] * y + m[10]* z); + + // last row should be unchanged (0,0,0,1) + + return *this; +} + + + +/////////////////////////////////////////////////////////////////////////////// +// compute the inverse of a 4x4 affine transformation matrix +// +// Affine transformations are generalizations of Euclidean transformations. +// Affine transformation includes translation, rotation, reflection, scaling, +// and shearing. Length and angle are NOT preserved. +// M = [ R | T ] +// [ --+-- ] (R denotes 3x3 rotation/scale/shear matrix) +// [ 0 | 1 ] (T denotes 1x3 translation matrix) +// +// y = M*x -> y = R*x + T -> x = R^-1*(y - T) -> x = R^-1*y - R^-1*T +// +// [ R | T ]-1 [ R^-1 | -R^-1 * T ] +// [ --+-- ] = [ -----+---------- ] +// [ 0 | 1 ] [ 0 + 1 ] +/////////////////////////////////////////////////////////////////////////////// +Matrix4& Matrix4::invertAffine() +{ + // R^-1 + Matrix3 r(m[0],m[1],m[2], m[4],m[5],m[6], m[8],m[9],m[10]); + r.invert(); + m[0] = r[0]; m[1] = r[1]; m[2] = r[2]; + m[4] = r[3]; m[5] = r[4]; m[6] = r[5]; + m[8] = r[6]; m[9] = r[7]; m[10]= r[8]; + + // -R^-1 * T + float x = m[12]; + float y = m[13]; + float z = m[14]; + m[12] = -(r[0] * x + r[3] * y + r[6] * z); + m[13] = -(r[1] * x + r[4] * y + r[7] * z); + m[14] = -(r[2] * x + r[5] * y + r[8] * z); + + // last row should be unchanged (0,0,0,1) + //m[3] = m[7] = m[11] = 0.0f; + //m[15] = 1.0f; + + return * this; +} + + + +/////////////////////////////////////////////////////////////////////////////// +// inverse matrix using matrix partitioning (blockwise inverse) +// It devides a 4x4 matrix into 4 of 2x2 matrices. It works in case of where +// det(A) != 0. If not, use the generic inverse method +// inverse formula. +// M = [ A | B ] A, B, C, D are 2x2 matrix blocks +// [ --+-- ] det(M) = |A| * |D - ((C * A^-1) * B)| +// [ C | D ] +// +// M^-1 = [ A' | B' ] A' = A^-1 - (A^-1 * B) * C' +// [ ---+--- ] B' = (A^-1 * B) * -D' +// [ C' | D' ] C' = -D' * (C * A^-1) +// D' = (D - ((C * A^-1) * B))^-1 +// +// NOTE: I wrap with () if it it used more than once. +// The matrix is invertable even if det(A)=0, so must check det(A) before +// calling this function, and use invertGeneric() instead. +/////////////////////////////////////////////////////////////////////////////// +Matrix4& Matrix4::invertProjective() +{ + // partition + Matrix2 a(m[0], m[1], m[4], m[5]); + Matrix2 b(m[8], m[9], m[12], m[13]); + Matrix2 c(m[2], m[3], m[6], m[7]); + Matrix2 d(m[10], m[11], m[14], m[15]); + + // pre-compute repeated parts + a.invert(); // A^-1 + Matrix2 ab = a * b; // A^-1 * B + Matrix2 ca = c * a; // C * A^-1 + Matrix2 cab = ca * b; // C * A^-1 * B + Matrix2 dcab = d - cab; // D - C * A^-1 * B + + // check determinant if |D - C * A^-1 * B| = 0 + //NOTE: this function assumes det(A) is already checked. if |A|=0 then, + // cannot use this function. + float determinant = dcab[0] * dcab[3] - dcab[1] * dcab[2]; + if(fabs(determinant) <= EPSILON) + { + return identity(); + } + + // compute D' and -D' + Matrix2 d1 = dcab; // (D - C * A^-1 * B) + d1.invert(); // (D - C * A^-1 * B)^-1 + Matrix2 d2 = -d1; // -(D - C * A^-1 * B)^-1 + + // compute C' + Matrix2 c1 = d2 * ca; // -D' * (C * A^-1) + + // compute B' + Matrix2 b1 = ab * d2; // (A^-1 * B) * -D' + + // compute A' + Matrix2 a1 = a - (ab * c1); // A^-1 - (A^-1 * B) * C' + + // assemble inverse matrix + m[0] = a1[0]; m[4] = a1[2]; /*|*/ m[8] = b1[0]; m[12]= b1[2]; + m[1] = a1[1]; m[5] = a1[3]; /*|*/ m[9] = b1[1]; m[13]= b1[3]; + /*-----------------------------+-----------------------------*/ + m[2] = c1[0]; m[6] = c1[2]; /*|*/ m[10]= d1[0]; m[14]= d1[2]; + m[3] = c1[1]; m[7] = c1[3]; /*|*/ m[11]= d1[1]; m[15]= d1[3]; + + return *this; +} + + + +/////////////////////////////////////////////////////////////////////////////// +// compute the inverse of a general 4x4 matrix using Cramer's Rule +// If cannot find inverse, return indentity matrix +// M^-1 = adj(M) / det(M) +/////////////////////////////////////////////////////////////////////////////// +Matrix4& Matrix4::invertGeneral() +{ + // get cofactors of minor matrices + float cofactor0 = getCofactor(m[5],m[6],m[7], m[9],m[10],m[11], m[13],m[14],m[15]); + float cofactor1 = getCofactor(m[4],m[6],m[7], m[8],m[10],m[11], m[12],m[14],m[15]); + float cofactor2 = getCofactor(m[4],m[5],m[7], m[8],m[9], m[11], m[12],m[13],m[15]); + float cofactor3 = getCofactor(m[4],m[5],m[6], m[8],m[9], m[10], m[12],m[13],m[14]); + + // get determinant + float determinant = m[0] * cofactor0 - m[1] * cofactor1 + m[2] * cofactor2 - m[3] * cofactor3; + if(fabs(determinant) <= EPSILON) + { + return identity(); + } + + // get rest of cofactors for adj(M) + float cofactor4 = getCofactor(m[1],m[2],m[3], m[9],m[10],m[11], m[13],m[14],m[15]); + float cofactor5 = getCofactor(m[0],m[2],m[3], m[8],m[10],m[11], m[12],m[14],m[15]); + float cofactor6 = getCofactor(m[0],m[1],m[3], m[8],m[9], m[11], m[12],m[13],m[15]); + float cofactor7 = getCofactor(m[0],m[1],m[2], m[8],m[9], m[10], m[12],m[13],m[14]); + + float cofactor8 = getCofactor(m[1],m[2],m[3], m[5],m[6], m[7], m[13],m[14],m[15]); + float cofactor9 = getCofactor(m[0],m[2],m[3], m[4],m[6], m[7], m[12],m[14],m[15]); + float cofactor10= getCofactor(m[0],m[1],m[3], m[4],m[5], m[7], m[12],m[13],m[15]); + float cofactor11= getCofactor(m[0],m[1],m[2], m[4],m[5], m[6], m[12],m[13],m[14]); + + float cofactor12= getCofactor(m[1],m[2],m[3], m[5],m[6], m[7], m[9], m[10],m[11]); + float cofactor13= getCofactor(m[0],m[2],m[3], m[4],m[6], m[7], m[8], m[10],m[11]); + float cofactor14= getCofactor(m[0],m[1],m[3], m[4],m[5], m[7], m[8], m[9], m[11]); + float cofactor15= getCofactor(m[0],m[1],m[2], m[4],m[5], m[6], m[8], m[9], m[10]); + + // build inverse matrix = adj(M) / det(M) + // adjugate of M is the transpose of the cofactor matrix of M + float invDeterminant = 1.0f / determinant; + m[0] = invDeterminant * cofactor0; + m[1] = -invDeterminant * cofactor4; + m[2] = invDeterminant * cofactor8; + m[3] = -invDeterminant * cofactor12; + + m[4] = -invDeterminant * cofactor1; + m[5] = invDeterminant * cofactor5; + m[6] = -invDeterminant * cofactor9; + m[7] = invDeterminant * cofactor13; + + m[8] = invDeterminant * cofactor2; + m[9] = -invDeterminant * cofactor6; + m[10]= invDeterminant * cofactor10; + m[11]= -invDeterminant * cofactor14; + + m[12]= -invDeterminant * cofactor3; + m[13]= invDeterminant * cofactor7; + m[14]= -invDeterminant * cofactor11; + m[15]= invDeterminant * cofactor15; + + return *this; +} + + + +/////////////////////////////////////////////////////////////////////////////// +// return determinant of 4x4 matrix +/////////////////////////////////////////////////////////////////////////////// +float Matrix4::getDeterminant() +{ + return m[0] * getCofactor(m[5],m[6],m[7], m[9],m[10],m[11], m[13],m[14],m[15]) - + m[1] * getCofactor(m[4],m[6],m[7], m[8],m[10],m[11], m[12],m[14],m[15]) + + m[2] * getCofactor(m[4],m[5],m[7], m[8],m[9], m[11], m[12],m[13],m[15]) - + m[3] * getCofactor(m[4],m[5],m[6], m[8],m[9], m[10], m[12],m[13],m[14]); +} + + + +/////////////////////////////////////////////////////////////////////////////// +// compute cofactor of 3x3 minor matrix without sign +// input params are 9 elements of the minor matrix +// NOTE: The caller must know its sign. +/////////////////////////////////////////////////////////////////////////////// +float Matrix4::getCofactor(float m0, float m1, float m2, + float m3, float m4, float m5, + float m6, float m7, float m8) +{ + return m0 * (m4 * m8 - m5 * m7) - + m1 * (m3 * m8 - m5 * m6) + + m2 * (m3 * m7 - m4 * m6); +} + + + +/////////////////////////////////////////////////////////////////////////////// +// translate this matrix by (x, y, z) +/////////////////////////////////////////////////////////////////////////////// +Matrix4& Matrix4::translate(const Vector3& v) +{ + return translate(v.x, v.y, v.z); +} + +Matrix4& Matrix4::translate(float x, float y, float z) +{ + m[0] += m[3] * x; m[4] += m[7] * x; m[8] += m[11]* x; m[12]+= m[15]* x; + m[1] += m[3] * y; m[5] += m[7] * y; m[9] += m[11]* y; m[13]+= m[15]* y; + m[2] += m[3] * z; m[6] += m[7] * z; m[10]+= m[11]* z; m[14]+= m[15]* z; + + return *this; +} + + + +/////////////////////////////////////////////////////////////////////////////// +// uniform scale +/////////////////////////////////////////////////////////////////////////////// +Matrix4& Matrix4::scale(float s) +{ + return scale(s, s, s); +} + +Matrix4& Matrix4::scale(float x, float y, float z) +{ + m[0] *= x; m[4] *= x; m[8] *= x; m[12] *= x; + m[1] *= y; m[5] *= y; m[9] *= y; m[13] *= y; + m[2] *= z; m[6] *= z; m[10]*= z; m[14] *= z; + return *this; +} + + + +/////////////////////////////////////////////////////////////////////////////// +// build a rotation matrix with given angle(degree) and rotation axis, then +// multiply it with this object +/////////////////////////////////////////////////////////////////////////////// +Matrix4& Matrix4::rotate(float angle, const Vector3& axis) +{ + return rotate(angle, axis.x, axis.y, axis.z); +} + +Matrix4& Matrix4::rotate(float angle, float x, float y, float z) +{ + float c = cosf(angle * DEG2RAD); // cosine + float s = sinf(angle * DEG2RAD); // sine + float c1 = 1.0f - c; // 1 - c + float m0 = m[0], m4 = m[4], m8 = m[8], m12= m[12], + m1 = m[1], m5 = m[5], m9 = m[9], m13= m[13], + m2 = m[2], m6 = m[6], m10= m[10], m14= m[14]; + + // build rotation matrix + float r0 = x * x * c1 + c; + float r1 = x * y * c1 + z * s; + float r2 = x * z * c1 - y * s; + float r4 = x * y * c1 - z * s; + float r5 = y * y * c1 + c; + float r6 = y * z * c1 + x * s; + float r8 = x * z * c1 + y * s; + float r9 = y * z * c1 - x * s; + float r10= z * z * c1 + c; + + // multiply rotation matrix + m[0] = r0 * m0 + r4 * m1 + r8 * m2; + m[1] = r1 * m0 + r5 * m1 + r9 * m2; + m[2] = r2 * m0 + r6 * m1 + r10* m2; + m[4] = r0 * m4 + r4 * m5 + r8 * m6; + m[5] = r1 * m4 + r5 * m5 + r9 * m6; + m[6] = r2 * m4 + r6 * m5 + r10* m6; + m[8] = r0 * m8 + r4 * m9 + r8 * m10; + m[9] = r1 * m8 + r5 * m9 + r9 * m10; + m[10]= r2 * m8 + r6 * m9 + r10* m10; + m[12]= r0 * m12+ r4 * m13+ r8 * m14; + m[13]= r1 * m12+ r5 * m13+ r9 * m14; + m[14]= r2 * m12+ r6 * m13+ r10* m14; + + return *this; +} + +Matrix4& Matrix4::rotateX(float angle) +{ + float c = cosf(angle * DEG2RAD); + float s = sinf(angle * DEG2RAD); + float m1 = m[1], m2 = m[2], + m5 = m[5], m6 = m[6], + m9 = m[9], m10= m[10], + m13= m[13], m14= m[14]; + + m[1] = m1 * c + m2 *-s; + m[2] = m1 * s + m2 * c; + m[5] = m5 * c + m6 *-s; + m[6] = m5 * s + m6 * c; + m[9] = m9 * c + m10*-s; + m[10]= m9 * s + m10* c; + m[13]= m13* c + m14*-s; + m[14]= m13* s + m14* c; + + return *this; +} + +Matrix4& Matrix4::rotateY(float angle) +{ + float c = cosf(angle * DEG2RAD); + float s = sinf(angle * DEG2RAD); + float m0 = m[0], m2 = m[2], + m4 = m[4], m6 = m[6], + m8 = m[8], m10= m[10], + m12= m[12], m14= m[14]; + + m[0] = m0 * c + m2 * s; + m[2] = m0 *-s + m2 * c; + m[4] = m4 * c + m6 * s; + m[6] = m4 *-s + m6 * c; + m[8] = m8 * c + m10* s; + m[10]= m8 *-s + m10* c; + m[12]= m12* c + m14* s; + m[14]= m12*-s + m14* c; + + return *this; +} + +Matrix4& Matrix4::rotateZ(float angle) +{ + float c = cosf(angle * DEG2RAD); + float s = sinf(angle * DEG2RAD); + float m0 = m[0], m1 = m[1], + m4 = m[4], m5 = m[5], + m8 = m[8], m9 = m[9], + m12= m[12], m13= m[13]; + + m[0] = m0 * c + m1 *-s; + m[1] = m0 * s + m1 * c; + m[4] = m4 * c + m5 *-s; + m[5] = m4 * s + m5 * c; + m[8] = m8 * c + m9 *-s; + m[9] = m8 * s + m9 * c; + m[12]= m12* c + m13*-s; + m[13]= m12* s + m13* c; + + return *this; +} + +/////////////////////////////////////////////////////////////////////////////// +// glFrustum() +/////////////////////////////////////////////////////////////////////////////// +Matrix4 setFrustum(float l, float r, float b, float t, float n, float f) +{ + Matrix4 mat; + mat[0] = 2 * n / (r - l); + mat[5] = 2 * n / (t - b); + mat[8] = (r + l) / (r - l); + mat[9] = (t + b) / (t - b); + mat[10] = -(f + n) / (f - n); + mat[11] = -1; + mat[14] = -(2 * f * n) / (f - n); + mat[15] = 0; + return mat; +} + +/////////////////////////////////////////////////////////////////////////////// +// gluPerspective() +/////////////////////////////////////////////////////////////////////////////// +Matrix4 setFrustum(float fovY, float aspect, float front, float back) +{ + float tangent = tanf(fovY/2 * DEG2RAD); // tangent of half fovY + float height = front * tangent; // half height of near plane + float width = height * aspect; // half width of near plane + + // params: left, right, bottom, top, near, far + return setFrustum(-width, width, -height, height, front, back); +} + +/////////////////////////////////////////////////////////////////////////////// +// glOrtho() +/////////////////////////////////////////////////////////////////////////////// +Matrix4 setOrthoFrustum(float l, float r, float b, float t, float n, float f) +{ + Matrix4 mat; + mat[0] = 2 / (r - l); + mat[5] = 2 / (t - b); + mat[10] = -2 / (f - n); + mat[12] = -(r + l) / (r - l); + mat[13] = -(t + b) / (t - b); + mat[14] = -(f + n) / (f - n); + return mat; +} + +Matrix4 lookAt(const Vector3& eye, const Vector3& center, const Vector3& up) +{ + /* + Matrix4 mat; + Vector3 forward = (center - eye); + forward.normalize(); + Vector3 side = (up.cross(forward)); + side.normalize(); + + // Recompute up as: up = side x forward + const Vector3 up2 = forward.cross(side); + + mat.identity(); + mat[0] = side.x; + mat[4] = side.y; + mat[8] = side.z; + + mat[1] = up2.x; + mat[5] = up2.y; + mat[9] = up2.z; + + mat[2] = forward.x; + mat[6] = forward.y; + mat[10] = forward.z; + + //mat[3] = -side.dot(eye); + //mat[7] = -up2.dot(eye); + //mat[11] = forward.dot(eye); + //mat[15] = 1.0f; + Matrix4 trans; + trans.identity(); + trans.translate(-eye.x, -eye.y, eye.z); + mat = mat * trans; +*/ + + float m[16]; + float x[3], y[3], z[3]; + float mag; + + // Make rotation matrix + + // Z vector + z[0] = eye.x - center.x; + z[1] = eye.y - center.y; + z[2] = eye.z - center.z; + mag = sqrt(z[0] * z[0] + z[1] * z[1] + z[2] * z[2]); + if (mag) { // mpichler, 19950515 + z[0] /= mag; + z[1] /= mag; + z[2] /= mag; + } + + // Y vector + y[0] = up.x; + y[1] = up.y; + y[2] = up.z; + + // X vector = Y cross Z + x[0] = y[1] * z[2] - y[2] * z[1]; + x[1] = -y[0] * z[2] + y[2] * z[0]; + x[2] = y[0] * z[1] - y[1] * z[0]; + + // Recompute Y = Z cross X + y[0] = z[1] * x[2] - z[2] * x[1]; + y[1] = -z[0] * x[2] + z[2] * x[0]; + y[2] = z[0] * x[1] - z[1] * x[0]; + + // mpichler, 19950515 + // cross product gives area of parallelogram, which is < 1.0 for + //non-perpendicular unit-length vectors; so normalize x, y here + + mag = sqrt(x[0] * x[0] + x[1] * x[1] + x[2] * x[2]); + if (mag) { + x[0] /= mag; + x[1] /= mag; + x[2] /= mag; + } + + mag = sqrt(y[0] * y[0] + y[1] * y[1] + y[2] * y[2]); + if (mag) { + y[0] /= mag; + y[1] /= mag; + y[2] /= mag; + } + +#define M(row,col) m[col*4+row] + M(0, 0) = x[0]; + M(0, 1) = x[1]; + M(0, 2) = x[2]; + M(0, 3) = 0.0; + M(1, 0) = y[0]; + M(1, 1) = y[1]; + M(1, 2) = y[2]; + M(1, 3) = 0.0; + M(2, 0) = z[0]; + M(2, 1) = z[1]; + M(2, 2) = z[2]; + M(2, 3) = 0.0; + M(3, 0) = 0.0; + M(3, 1) = 0.0; + M(3, 2) = 0.0; + M(3, 3) = 1.0; +#undef M + + Matrix4 mat(m); + + // Translate Eye to Origin + Matrix4 trans; + trans.identity(); + trans.translate(-eye.x, -eye.y, -eye.z); + mat = mat * trans; + + return mat; +} diff --git a/Matrices.h b/Matrices.h new file mode 100755 index 0000000..72787de --- /dev/null +++ b/Matrices.h @@ -0,0 +1,914 @@ +/////////////////////////////////////////////////////////////////////////////// +// Matrice.h +// ========= +// NxN Matrix Math classes +// +// The elements of the matrix are stored as column major order. +// | 0 2 | | 0 3 6 | | 0 4 8 12 | +// | 1 3 | | 1 4 7 | | 1 5 9 13 | +// | 2 5 8 | | 2 6 10 14 | +// | 3 7 11 15 | +// +// AUTHOR: Song Ho Ahn (song.ahn@gmail.com) +// CREATED: 2005-06-24 +// UPDATED: 2013-09-30 +// +// Copyright (C) 2005 Song Ho Ahn +/////////////////////////////////////////////////////////////////////////////// + +#ifndef MATH_MATRICES_H +#define MATH_MATRICES_H + +#include +#include +#include "Vectors.h" + +/////////////////////////////////////////////////////////////////////////// +// 2x2 matrix +/////////////////////////////////////////////////////////////////////////// +class Matrix2 +{ +public: + // constructors + Matrix2(); // init with identity + Matrix2(const float src[4]); + Matrix2(float m0, float m1, float m2, float m3); + + void set(const float src[4]); + void set(float m0, float m1, float m2, float m3); + void setRow(int index, const float row[2]); + void setRow(int index, const Vector2& v); + void setColumn(int index, const float col[2]); + void setColumn(int index, const Vector2& v); + + const float* get() const; + float getDeterminant(); + + Matrix2& identity(); + Matrix2& transpose(); // transpose itself and return reference + Matrix2& invert(); + + // operators + Matrix2 operator+(const Matrix2& rhs) const; // add rhs + Matrix2 operator-(const Matrix2& rhs) const; // subtract rhs + Matrix2& operator+=(const Matrix2& rhs); // add rhs and update this object + Matrix2& operator-=(const Matrix2& rhs); // subtract rhs and update this object + Vector2 operator*(const Vector2& rhs) const; // multiplication: v' = M * v + Matrix2 operator*(const Matrix2& rhs) const; // multiplication: M3 = M1 * M2 + Matrix2& operator*=(const Matrix2& rhs); // multiplication: M1' = M1 * M2 + bool operator==(const Matrix2& rhs) const; // exact compare, no epsilon + bool operator!=(const Matrix2& rhs) const; // exact compare, no epsilon + float operator[](int index) const; // subscript operator v[0], v[1] + float& operator[](int index); // subscript operator v[0], v[1] + + friend Matrix2 operator-(const Matrix2& m); // unary operator (-) + friend Matrix2 operator*(float scalar, const Matrix2& m); // pre-multiplication + friend Vector2 operator*(const Vector2& vec, const Matrix2& m); // pre-multiplication + friend std::ostream& operator<<(std::ostream& os, const Matrix2& m); + +protected: + +private: + float m[4]; + +}; + + + +/////////////////////////////////////////////////////////////////////////// +// 3x3 matrix +/////////////////////////////////////////////////////////////////////////// +class Matrix3 +{ +public: + // constructors + Matrix3(); // init with identity + Matrix3(const float src[9]); + Matrix3(float m0, float m1, float m2, // 1st column + float m3, float m4, float m5, // 2nd column + float m6, float m7, float m8); // 3rd column + + void set(const float src[9]); + void set(float m0, float m1, float m2, // 1st column + float m3, float m4, float m5, // 2nd column + float m6, float m7, float m8); // 3rd column + void setRow(int index, const float row[3]); + void setRow(int index, const Vector3& v); + void setColumn(int index, const float col[3]); + void setColumn(int index, const Vector3& v); + + const float* get() const; + float getDeterminant(); + + Matrix3& identity(); + Matrix3& transpose(); // transpose itself and return reference + Matrix3& invert(); + + // operators + Matrix3 operator+(const Matrix3& rhs) const; // add rhs + Matrix3 operator-(const Matrix3& rhs) const; // subtract rhs + Matrix3& operator+=(const Matrix3& rhs); // add rhs and update this object + Matrix3& operator-=(const Matrix3& rhs); // subtract rhs and update this object + Vector3 operator*(const Vector3& rhs) const; // multiplication: v' = M * v + Matrix3 operator*(const Matrix3& rhs) const; // multiplication: M3 = M1 * M2 + Matrix3& operator*=(const Matrix3& rhs); // multiplication: M1' = M1 * M2 + bool operator==(const Matrix3& rhs) const; // exact compare, no epsilon + bool operator!=(const Matrix3& rhs) const; // exact compare, no epsilon + float operator[](int index) const; // subscript operator v[0], v[1] + float& operator[](int index); // subscript operator v[0], v[1] + + friend Matrix3 operator-(const Matrix3& m); // unary operator (-) + friend Matrix3 operator*(float scalar, const Matrix3& m); // pre-multiplication + friend Vector3 operator*(const Vector3& vec, const Matrix3& m); // pre-multiplication + friend std::ostream& operator<<(std::ostream& os, const Matrix3& m); + +protected: + +private: + float m[9]; + +}; + + + +/////////////////////////////////////////////////////////////////////////// +// 4x4 matrix +/////////////////////////////////////////////////////////////////////////// +class Matrix4 +{ +public: + // constructors + Matrix4(); // init with identity + Matrix4(const float src[16]); + Matrix4(float m00, float m01, float m02, float m03, // 1st column + float m04, float m05, float m06, float m07, // 2nd column + float m08, float m09, float m10, float m11, // 3rd column + float m12, float m13, float m14, float m15);// 4th column + + void set(const float src[16]); + void set(float m00, float m01, float m02, float m03, // 1st column + float m04, float m05, float m06, float m07, // 2nd column + float m08, float m09, float m10, float m11, // 3rd column + float m12, float m13, float m14, float m15);// 4th column + void setRow(int index, const float row[4]); + void setRow(int index, const Vector4& v); + void setRow(int index, const Vector3& v); + void setColumn(int index, const float col[4]); + void setColumn(int index, const Vector4& v); + void setColumn(int index, const Vector3& v); + + const float* get() const; + const float* getTranspose(); // return transposed matrix + float getDeterminant(); + + const Vector3 eulerAngles(); + Matrix4& identity(); + Matrix4& transpose(); // transpose itself and return reference + Matrix4& invert(); // check best inverse method before inverse + Matrix4& invertEuclidean(); // inverse of Euclidean transform matrix + Matrix4& invertAffine(); // inverse of affine transform matrix + Matrix4& invertProjective(); // inverse of projective matrix using partitioning + Matrix4& invertGeneral(); // inverse of generic matrix + + // transform matrix + Matrix4& translate(float x, float y, float z); // translation by (x,y,z) + Matrix4& translate(const Vector3& v); // + Matrix4& rotate(float angle, const Vector3& axis); // rotate angle(degree) along the given axix + Matrix4& rotate(float angle, float x, float y, float z); + Matrix4& rotateX(float angle); // rotate on X-axis with degree + Matrix4& rotateY(float angle); // rotate on Y-axis with degree + Matrix4& rotateZ(float angle); // rotate on Z-axis with degree + Matrix4& scale(float scale); // uniform scale + Matrix4& scale(float sx, float sy, float sz); // scale by (sx, sy, sz) on each axis + + // operators + Matrix4 operator+(const Matrix4& rhs) const; // add rhs + Matrix4 operator-(const Matrix4& rhs) const; // subtract rhs + Matrix4& operator+=(const Matrix4& rhs); // add rhs and update this object + Matrix4& operator-=(const Matrix4& rhs); // subtract rhs and update this object + Vector4 operator*(const Vector4& rhs) const; // multiplication: v' = M * v + Vector3 operator*(const Vector3& rhs) const; // multiplication: v' = M * v + Matrix4 operator*(const Matrix4& rhs) const; // multiplication: M3 = M1 * M2 + Matrix4& operator*=(const Matrix4& rhs); // multiplication: M1' = M1 * M2 + bool operator==(const Matrix4& rhs) const; // exact compare, no epsilon + bool operator!=(const Matrix4& rhs) const; // exact compare, no epsilon + float operator[](int index) const; // subscript operator v[0], v[1] + float& operator[](int index); // subscript operator v[0], v[1] + + friend Matrix4 operator-(const Matrix4& m); // unary operator (-) + friend Matrix4 operator*(float scalar, const Matrix4& m); // pre-multiplication + friend Vector3 operator*(const Vector3& vec, const Matrix4& m); // pre-multiplication + friend Vector4 operator*(const Vector4& vec, const Matrix4& m); // pre-multiplication + friend std::ostream& operator<<(std::ostream& os, const Matrix4& m); + +protected: + +private: + float getCofactor(float m0, float m1, float m2, + float m3, float m4, float m5, + float m6, float m7, float m8); + + float m[16]; + float tm[16]; // transpose m + +}; + +Matrix4 setFrustum(float l, float r, float b, float t, float n, float f); +Matrix4 setFrustum(float fovY, float aspect, float front, float back); +Matrix4 setOrthoFrustum(float l, float r, float b, float t, float n, float f); +Matrix4 lookAt(const Vector3& eye, const Vector3& center, const Vector3& up); + + +/////////////////////////////////////////////////////////////////////////// +// inline functions for Matrix2 +/////////////////////////////////////////////////////////////////////////// +inline Matrix2::Matrix2() +{ + // initially identity matrix + identity(); +} + + + +inline Matrix2::Matrix2(const float src[4]) +{ + set(src); +} + + + +inline Matrix2::Matrix2(float m0, float m1, float m2, float m3) +{ + set(m0, m1, m2, m3); +} + + + +inline void Matrix2::set(const float src[4]) +{ + m[0] = src[0]; m[1] = src[1]; m[2] = src[2]; m[3] = src[3]; +} + + + +inline void Matrix2::set(float m0, float m1, float m2, float m3) +{ + m[0]= m0; m[1] = m1; m[2] = m2; m[3]= m3; +} + + + +inline void Matrix2::setRow(int index, const float row[2]) +{ + m[index] = row[0]; m[index + 2] = row[1]; +} + + + +inline void Matrix2::setRow(int index, const Vector2& v) +{ + m[index] = v.x; m[index + 2] = v.y; +} + + + +inline void Matrix2::setColumn(int index, const float col[2]) +{ + m[index*2] = col[0]; m[index*2 + 1] = col[1]; +} + + + +inline void Matrix2::setColumn(int index, const Vector2& v) +{ + m[index*2] = v.x; m[index*2 + 1] = v.y; +} + + + +inline const float* Matrix2::get() const +{ + return m; +} + + + +inline Matrix2& Matrix2::identity() +{ + m[0] = m[3] = 1.0f; + m[1] = m[2] = 0.0f; + return *this; +} + + + +inline Matrix2 Matrix2::operator+(const Matrix2& rhs) const +{ + return Matrix2(m[0]+rhs[0], m[1]+rhs[1], m[2]+rhs[2], m[3]+rhs[3]); +} + + + +inline Matrix2 Matrix2::operator-(const Matrix2& rhs) const +{ + return Matrix2(m[0]-rhs[0], m[1]-rhs[1], m[2]-rhs[2], m[3]-rhs[3]); +} + + + +inline Matrix2& Matrix2::operator+=(const Matrix2& rhs) +{ + m[0] += rhs[0]; m[1] += rhs[1]; m[2] += rhs[2]; m[3] += rhs[3]; + return *this; +} + + + +inline Matrix2& Matrix2::operator-=(const Matrix2& rhs) +{ + m[0] -= rhs[0]; m[1] -= rhs[1]; m[2] -= rhs[2]; m[3] -= rhs[3]; + return *this; +} + + + +inline Vector2 Matrix2::operator*(const Vector2& rhs) const +{ + return Vector2(m[0]*rhs.x + m[2]*rhs.y, m[1]*rhs.x + m[3]*rhs.y); +} + + + +inline Matrix2 Matrix2::operator*(const Matrix2& rhs) const +{ + return Matrix2(m[0]*rhs[0] + m[2]*rhs[1], m[1]*rhs[0] + m[3]*rhs[1], + m[0]*rhs[2] + m[2]*rhs[3], m[1]*rhs[2] + m[3]*rhs[3]); +} + + + +inline Matrix2& Matrix2::operator*=(const Matrix2& rhs) +{ + *this = *this * rhs; + return *this; +} + + + +inline bool Matrix2::operator==(const Matrix2& rhs) const +{ + return (m[0] == rhs[0]) && (m[1] == rhs[1]) && (m[2] == rhs[2]) && (m[3] == rhs[3]); +} + + + +inline bool Matrix2::operator!=(const Matrix2& rhs) const +{ + return (m[0] != rhs[0]) || (m[1] != rhs[1]) || (m[2] != rhs[2]) || (m[3] != rhs[3]); +} + + + +inline float Matrix2::operator[](int index) const +{ + return m[index]; +} + + + +inline float& Matrix2::operator[](int index) +{ + return m[index]; +} + + + +inline Matrix2 operator-(const Matrix2& rhs) +{ + return Matrix2(-rhs[0], -rhs[1], -rhs[2], -rhs[3]); +} + + + +inline Matrix2 operator*(float s, const Matrix2& rhs) +{ + return Matrix2(s*rhs[0], s*rhs[1], s*rhs[2], s*rhs[3]); +} + + + +inline Vector2 operator*(const Vector2& v, const Matrix2& rhs) +{ + return Vector2(v.x*rhs[0] + v.y*rhs[1], v.x*rhs[2] + v.y*rhs[3]); +} + + + +inline std::ostream& operator<<(std::ostream& os, const Matrix2& m) +{ + os << std::fixed << std::setprecision(5); + os << "[" << std::setw(10) << m[0] << " " << std::setw(10) << m[2] << "]\n" + << "[" << std::setw(10) << m[1] << " " << std::setw(10) << m[3] << "]\n"; + os << std::resetiosflags(std::ios_base::fixed | std::ios_base::floatfield); + return os; +} +// END OF MATRIX2 INLINE ////////////////////////////////////////////////////// + + + + +/////////////////////////////////////////////////////////////////////////// +// inline functions for Matrix3 +/////////////////////////////////////////////////////////////////////////// +inline Matrix3::Matrix3() +{ + // initially identity matrix + identity(); +} + + + +inline Matrix3::Matrix3(const float src[9]) +{ + set(src); +} + + + +inline Matrix3::Matrix3(float m0, float m1, float m2, + float m3, float m4, float m5, + float m6, float m7, float m8) +{ + set(m0, m1, m2, m3, m4, m5, m6, m7, m8); +} + + + +inline void Matrix3::set(const float src[9]) +{ + m[0] = src[0]; m[1] = src[1]; m[2] = src[2]; + m[3] = src[3]; m[4] = src[4]; m[5] = src[5]; + m[6] = src[6]; m[7] = src[7]; m[8] = src[8]; +} + + + +inline void Matrix3::set(float m0, float m1, float m2, + float m3, float m4, float m5, + float m6, float m7, float m8) +{ + m[0] = m0; m[1] = m1; m[2] = m2; + m[3] = m3; m[4] = m4; m[5] = m5; + m[6] = m6; m[7] = m7; m[8] = m8; +} + + + +inline void Matrix3::setRow(int index, const float row[3]) +{ + m[index] = row[0]; m[index + 3] = row[1]; m[index + 6] = row[2]; +} + + + +inline void Matrix3::setRow(int index, const Vector3& v) +{ + m[index] = v.x; m[index + 3] = v.y; m[index + 6] = v.z; +} + + + +inline void Matrix3::setColumn(int index, const float col[3]) +{ + m[index*3] = col[0]; m[index*3 + 1] = col[1]; m[index*3 + 2] = col[2]; +} + + + +inline void Matrix3::setColumn(int index, const Vector3& v) +{ + m[index*3] = v.x; m[index*3 + 1] = v.y; m[index*3 + 2] = v.z; +} + + + +inline const float* Matrix3::get() const +{ + return m; +} + + + +inline Matrix3& Matrix3::identity() +{ + m[0] = m[4] = m[8] = 1.0f; + m[1] = m[2] = m[3] = m[5] = m[6] = m[7] = 0.0f; + return *this; +} + + + +inline Matrix3 Matrix3::operator+(const Matrix3& rhs) const +{ + return Matrix3(m[0]+rhs[0], m[1]+rhs[1], m[2]+rhs[2], + m[3]+rhs[3], m[4]+rhs[4], m[5]+rhs[5], + m[6]+rhs[6], m[7]+rhs[7], m[8]+rhs[8]); +} + + + +inline Matrix3 Matrix3::operator-(const Matrix3& rhs) const +{ + return Matrix3(m[0]-rhs[0], m[1]-rhs[1], m[2]-rhs[2], + m[3]-rhs[3], m[4]-rhs[4], m[5]-rhs[5], + m[6]-rhs[6], m[7]-rhs[7], m[8]-rhs[8]); +} + + + +inline Matrix3& Matrix3::operator+=(const Matrix3& rhs) +{ + m[0] += rhs[0]; m[1] += rhs[1]; m[2] += rhs[2]; + m[3] += rhs[3]; m[4] += rhs[4]; m[5] += rhs[5]; + m[6] += rhs[6]; m[7] += rhs[7]; m[8] += rhs[8]; + return *this; +} + + + +inline Matrix3& Matrix3::operator-=(const Matrix3& rhs) +{ + m[0] -= rhs[0]; m[1] -= rhs[1]; m[2] -= rhs[2]; + m[3] -= rhs[3]; m[4] -= rhs[4]; m[5] -= rhs[5]; + m[6] -= rhs[6]; m[7] -= rhs[7]; m[8] -= rhs[8]; + return *this; +} + + + +inline Vector3 Matrix3::operator*(const Vector3& rhs) const +{ + return Vector3(m[0]*rhs.x + m[3]*rhs.y + m[6]*rhs.z, + m[1]*rhs.x + m[4]*rhs.y + m[7]*rhs.z, + m[2]*rhs.x + m[5]*rhs.y + m[8]*rhs.z); +} + + + +inline Matrix3 Matrix3::operator*(const Matrix3& rhs) const +{ + return Matrix3(m[0]*rhs[0] + m[3]*rhs[1] + m[6]*rhs[2], m[1]*rhs[0] + m[4]*rhs[1] + m[7]*rhs[2], m[2]*rhs[0] + m[5]*rhs[1] + m[8]*rhs[2], + m[0]*rhs[3] + m[3]*rhs[4] + m[6]*rhs[5], m[1]*rhs[3] + m[4]*rhs[4] + m[7]*rhs[5], m[2]*rhs[3] + m[5]*rhs[4] + m[8]*rhs[5], + m[0]*rhs[6] + m[3]*rhs[7] + m[6]*rhs[8], m[1]*rhs[6] + m[4]*rhs[7] + m[7]*rhs[8], m[2]*rhs[6] + m[5]*rhs[7] + m[8]*rhs[8]); +} + + + +inline Matrix3& Matrix3::operator*=(const Matrix3& rhs) +{ + *this = *this * rhs; + return *this; +} + + + +inline bool Matrix3::operator==(const Matrix3& rhs) const +{ + return (m[0] == rhs[0]) && (m[1] == rhs[1]) && (m[2] == rhs[2]) && + (m[3] == rhs[3]) && (m[4] == rhs[4]) && (m[5] == rhs[5]) && + (m[6] == rhs[6]) && (m[7] == rhs[7]) && (m[8] == rhs[8]); +} + + + +inline bool Matrix3::operator!=(const Matrix3& rhs) const +{ + return (m[0] != rhs[0]) || (m[1] != rhs[1]) || (m[2] != rhs[2]) || + (m[3] != rhs[3]) || (m[4] != rhs[4]) || (m[5] != rhs[5]) || + (m[6] != rhs[6]) || (m[7] != rhs[7]) || (m[8] != rhs[8]); +} + + + +inline float Matrix3::operator[](int index) const +{ + return m[index]; +} + + + +inline float& Matrix3::operator[](int index) +{ + return m[index]; +} + + + +inline Matrix3 operator-(const Matrix3& rhs) +{ + return Matrix3(-rhs[0], -rhs[1], -rhs[2], -rhs[3], -rhs[4], -rhs[5], -rhs[6], -rhs[7], -rhs[8]); +} + + + +inline Matrix3 operator*(float s, const Matrix3& rhs) +{ + return Matrix3(s*rhs[0], s*rhs[1], s*rhs[2], s*rhs[3], s*rhs[4], s*rhs[5], s*rhs[6], s*rhs[7], s*rhs[8]); +} + + + +inline Vector3 operator*(const Vector3& v, const Matrix3& m) +{ + return Vector3(v.x*m[0] + v.y*m[1] + v.z*m[2], v.x*m[3] + v.y*m[4] + v.z*m[5], v.x*m[6] + v.y*m[7] + v.z*m[8]); +} + + + +inline std::ostream& operator<<(std::ostream& os, const Matrix3& m) +{ + os << std::fixed << std::setprecision(5); + os << "[" << std::setw(10) << m[0] << " " << std::setw(10) << m[3] << " " << std::setw(10) << m[6] << "]\n" + << "[" << std::setw(10) << m[1] << " " << std::setw(10) << m[4] << " " << std::setw(10) << m[7] << "]\n" + << "[" << std::setw(10) << m[2] << " " << std::setw(10) << m[5] << " " << std::setw(10) << m[8] << "]\n"; + os << std::resetiosflags(std::ios_base::fixed | std::ios_base::floatfield); + return os; +} +// END OF MATRIX3 INLINE ////////////////////////////////////////////////////// + + + + +/////////////////////////////////////////////////////////////////////////// +// inline functions for Matrix4 +/////////////////////////////////////////////////////////////////////////// +inline Matrix4::Matrix4() +{ + // initially identity matrix + identity(); +} + + + +inline Matrix4::Matrix4(const float src[16]) +{ + set(src); +} + + + +inline Matrix4::Matrix4(float m00, float m01, float m02, float m03, + float m04, float m05, float m06, float m07, + float m08, float m09, float m10, float m11, + float m12, float m13, float m14, float m15) +{ + set(m00, m01, m02, m03, m04, m05, m06, m07, m08, m09, m10, m11, m12, m13, m14, m15); +} + + + +inline void Matrix4::set(const float src[16]) +{ + m[0] = src[0]; m[1] = src[1]; m[2] = src[2]; m[3] = src[3]; + m[4] = src[4]; m[5] = src[5]; m[6] = src[6]; m[7] = src[7]; + m[8] = src[8]; m[9] = src[9]; m[10]= src[10]; m[11]= src[11]; + m[12]= src[12]; m[13]= src[13]; m[14]= src[14]; m[15]= src[15]; +} + + + +inline void Matrix4::set(float m00, float m01, float m02, float m03, + float m04, float m05, float m06, float m07, + float m08, float m09, float m10, float m11, + float m12, float m13, float m14, float m15) +{ + m[0] = m00; m[1] = m01; m[2] = m02; m[3] = m03; + m[4] = m04; m[5] = m05; m[6] = m06; m[7] = m07; + m[8] = m08; m[9] = m09; m[10]= m10; m[11]= m11; + m[12]= m12; m[13]= m13; m[14]= m14; m[15]= m15; +} + + + +inline void Matrix4::setRow(int index, const float row[4]) +{ + m[index] = row[0]; m[index + 4] = row[1]; m[index + 8] = row[2]; m[index + 12] = row[3]; +} + + + +inline void Matrix4::setRow(int index, const Vector4& v) +{ + m[index] = v.x; m[index + 4] = v.y; m[index + 8] = v.z; m[index + 12] = v.w; +} + + + +inline void Matrix4::setRow(int index, const Vector3& v) +{ + m[index] = v.x; m[index + 4] = v.y; m[index + 8] = v.z; +} + + + +inline void Matrix4::setColumn(int index, const float col[4]) +{ + m[index*4] = col[0]; m[index*4 + 1] = col[1]; m[index*4 + 2] = col[2]; m[index*4 + 3] = col[3]; +} + + + +inline void Matrix4::setColumn(int index, const Vector4& v) +{ + m[index*4] = v.x; m[index*4 + 1] = v.y; m[index*4 + 2] = v.z; m[index*4 + 3] = v.w; +} + + + +inline void Matrix4::setColumn(int index, const Vector3& v) +{ + m[index*4] = v.x; m[index*4 + 1] = v.y; m[index*4 + 2] = v.z; +} + + + +inline const float* Matrix4::get() const +{ + return m; +} + + + +inline const float* Matrix4::getTranspose() +{ + tm[0] = m[0]; tm[1] = m[4]; tm[2] = m[8]; tm[3] = m[12]; + tm[4] = m[1]; tm[5] = m[5]; tm[6] = m[9]; tm[7] = m[13]; + tm[8] = m[2]; tm[9] = m[6]; tm[10]= m[10]; tm[11]= m[14]; + tm[12]= m[3]; tm[13]= m[7]; tm[14]= m[11]; tm[15]= m[15]; + return tm; +} + + + +inline Matrix4& Matrix4::identity() +{ + m[0] = m[5] = m[10] = m[15] = 1.0f; + m[1] = m[2] = m[3] = m[4] = m[6] = m[7] = m[8] = m[9] = m[11] = m[12] = m[13] = m[14] = 0.0f; + return *this; +} + + + +inline Matrix4 Matrix4::operator+(const Matrix4& rhs) const +{ + return Matrix4(m[0]+rhs[0], m[1]+rhs[1], m[2]+rhs[2], m[3]+rhs[3], + m[4]+rhs[4], m[5]+rhs[5], m[6]+rhs[6], m[7]+rhs[7], + m[8]+rhs[8], m[9]+rhs[9], m[10]+rhs[10], m[11]+rhs[11], + m[12]+rhs[12], m[13]+rhs[13], m[14]+rhs[14], m[15]+rhs[15]); +} + + + +inline Matrix4 Matrix4::operator-(const Matrix4& rhs) const +{ + return Matrix4(m[0]-rhs[0], m[1]-rhs[1], m[2]-rhs[2], m[3]-rhs[3], + m[4]-rhs[4], m[5]-rhs[5], m[6]-rhs[6], m[7]-rhs[7], + m[8]-rhs[8], m[9]-rhs[9], m[10]-rhs[10], m[11]-rhs[11], + m[12]-rhs[12], m[13]-rhs[13], m[14]-rhs[14], m[15]-rhs[15]); +} + + + +inline Matrix4& Matrix4::operator+=(const Matrix4& rhs) +{ + m[0] += rhs[0]; m[1] += rhs[1]; m[2] += rhs[2]; m[3] += rhs[3]; + m[4] += rhs[4]; m[5] += rhs[5]; m[6] += rhs[6]; m[7] += rhs[7]; + m[8] += rhs[8]; m[9] += rhs[9]; m[10]+= rhs[10]; m[11]+= rhs[11]; + m[12]+= rhs[12]; m[13]+= rhs[13]; m[14]+= rhs[14]; m[15]+= rhs[15]; + return *this; +} + + + +inline Matrix4& Matrix4::operator-=(const Matrix4& rhs) +{ + m[0] -= rhs[0]; m[1] -= rhs[1]; m[2] -= rhs[2]; m[3] -= rhs[3]; + m[4] -= rhs[4]; m[5] -= rhs[5]; m[6] -= rhs[6]; m[7] -= rhs[7]; + m[8] -= rhs[8]; m[9] -= rhs[9]; m[10]-= rhs[10]; m[11]-= rhs[11]; + m[12]-= rhs[12]; m[13]-= rhs[13]; m[14]-= rhs[14]; m[15]-= rhs[15]; + return *this; +} + + + +inline Vector4 Matrix4::operator*(const Vector4& rhs) const +{ + return Vector4(m[0]*rhs.x + m[4]*rhs.y + m[8]*rhs.z + m[12]*rhs.w, + m[1]*rhs.x + m[5]*rhs.y + m[9]*rhs.z + m[13]*rhs.w, + m[2]*rhs.x + m[6]*rhs.y + m[10]*rhs.z + m[14]*rhs.w, + m[3]*rhs.x + m[7]*rhs.y + m[11]*rhs.z + m[15]*rhs.w); +} + + + +inline Vector3 Matrix4::operator*(const Vector3& rhs) const +{ + return Vector3(m[0]*rhs.x + m[4]*rhs.y + m[8]*rhs.z, + m[1]*rhs.x + m[5]*rhs.y + m[9]*rhs.z, + m[2]*rhs.x + m[6]*rhs.y + m[10]*rhs.z); +} + + + +inline Matrix4 Matrix4::operator*(const Matrix4& n) const +{ + return Matrix4(m[0]*n[0] + m[4]*n[1] + m[8]*n[2] + m[12]*n[3], m[1]*n[0] + m[5]*n[1] + m[9]*n[2] + m[13]*n[3], m[2]*n[0] + m[6]*n[1] + m[10]*n[2] + m[14]*n[3], m[3]*n[0] + m[7]*n[1] + m[11]*n[2] + m[15]*n[3], + m[0]*n[4] + m[4]*n[5] + m[8]*n[6] + m[12]*n[7], m[1]*n[4] + m[5]*n[5] + m[9]*n[6] + m[13]*n[7], m[2]*n[4] + m[6]*n[5] + m[10]*n[6] + m[14]*n[7], m[3]*n[4] + m[7]*n[5] + m[11]*n[6] + m[15]*n[7], + m[0]*n[8] + m[4]*n[9] + m[8]*n[10] + m[12]*n[11], m[1]*n[8] + m[5]*n[9] + m[9]*n[10] + m[13]*n[11], m[2]*n[8] + m[6]*n[9] + m[10]*n[10] + m[14]*n[11], m[3]*n[8] + m[7]*n[9] + m[11]*n[10] + m[15]*n[11], + m[0]*n[12] + m[4]*n[13] + m[8]*n[14] + m[12]*n[15], m[1]*n[12] + m[5]*n[13] + m[9]*n[14] + m[13]*n[15], m[2]*n[12] + m[6]*n[13] + m[10]*n[14] + m[14]*n[15], m[3]*n[12] + m[7]*n[13] + m[11]*n[14] + m[15]*n[15]); +} + + + +inline Matrix4& Matrix4::operator*=(const Matrix4& rhs) +{ + *this = *this * rhs; + return *this; +} + + + +inline bool Matrix4::operator==(const Matrix4& n) const +{ + return (m[0] == n[0]) && (m[1] == n[1]) && (m[2] == n[2]) && (m[3] == n[3]) && + (m[4] == n[4]) && (m[5] == n[5]) && (m[6] == n[6]) && (m[7] == n[7]) && + (m[8] == n[8]) && (m[9] == n[9]) && (m[10]== n[10]) && (m[11]== n[11]) && + (m[12]== n[12]) && (m[13]== n[13]) && (m[14]== n[14]) && (m[15]== n[15]); +} + + + +inline bool Matrix4::operator!=(const Matrix4& n) const +{ + return (m[0] != n[0]) || (m[1] != n[1]) || (m[2] != n[2]) || (m[3] != n[3]) || + (m[4] != n[4]) || (m[5] != n[5]) || (m[6] != n[6]) || (m[7] != n[7]) || + (m[8] != n[8]) || (m[9] != n[9]) || (m[10]!= n[10]) || (m[11]!= n[11]) || + (m[12]!= n[12]) || (m[13]!= n[13]) || (m[14]!= n[14]) || (m[15]!= n[15]); +} + + + +inline float Matrix4::operator[](int index) const +{ + return m[index]; +} + + + +inline float& Matrix4::operator[](int index) +{ + return m[index]; +} + + + +inline Matrix4 operator-(const Matrix4& rhs) +{ + return Matrix4(-rhs[0], -rhs[1], -rhs[2], -rhs[3], -rhs[4], -rhs[5], -rhs[6], -rhs[7], -rhs[8], -rhs[9], -rhs[10], -rhs[11], -rhs[12], -rhs[13], -rhs[14], -rhs[15]); +} + + + +inline Matrix4 operator*(float s, const Matrix4& rhs) +{ + return Matrix4(s*rhs[0], s*rhs[1], s*rhs[2], s*rhs[3], s*rhs[4], s*rhs[5], s*rhs[6], s*rhs[7], s*rhs[8], s*rhs[9], s*rhs[10], s*rhs[11], s*rhs[12], s*rhs[13], s*rhs[14], s*rhs[15]); +} + + + +inline Vector4 operator*(const Vector4& v, const Matrix4& m) +{ + return Vector4(v.x*m[0] + v.y*m[1] + v.z*m[2] + v.w*m[3], v.x*m[4] + v.y*m[5] + v.z*m[6] + v.w*m[7], v.x*m[8] + v.y*m[9] + v.z*m[10] + v.w*m[11], v.x*m[12] + v.y*m[13] + v.z*m[14] + v.w*m[15]); +} + + + +inline Vector3 operator*(const Vector3& v, const Matrix4& m) +{ + return Vector3(v.x*m[0] + v.y*m[1] + v.z*m[2], v.x*m[4] + v.y*m[5] + v.z*m[6], v.x*m[8] + v.y*m[9] + v.z*m[10]); +} + + + +inline std::ostream& operator<<(std::ostream& os, const Matrix4& m) +{ + os << std::fixed << std::setprecision(5); + os << "[" << std::setw(10) << m[0] << " " << std::setw(10) << m[4] << " " << std::setw(10) << m[8] << " " << std::setw(10) << m[12] << "]\n" + << "[" << std::setw(10) << m[1] << " " << std::setw(10) << m[5] << " " << std::setw(10) << m[9] << " " << std::setw(10) << m[13] << "]\n" + << "[" << std::setw(10) << m[2] << " " << std::setw(10) << m[6] << " " << std::setw(10) << m[10] << " " << std::setw(10) << m[14] << "]\n" + << "[" << std::setw(10) << m[3] << " " << std::setw(10) << m[7] << " " << std::setw(10) << m[11] << " " << std::setw(10) << m[15] << "]\n"; + os << std::resetiosflags(std::ios_base::fixed | std::ios_base::floatfield); + return os; +} +// END OF MATRIX4 INLINE ////////////////////////////////////////////////////// +#endif diff --git a/Model.cpp b/Model.cpp new file mode 100644 index 0000000..982ace8 --- /dev/null +++ b/Model.cpp @@ -0,0 +1,615 @@ +#include "Model.h" + +#include +#include "renderer.h" +#include "screen.h" +#include "Editor.h" + +const float vb[8][3] = {{-0.5f, 0.5f, -0.5f},{-0.5f, 0.5f, 0.5f},{0.5f, 0.5f, 0.5f},{0.5f, 0.5f, -0.5f},{-0.5f, -0.5f, -0.5f},{-0.5f, -0.5f, 0.5f},{0.5f, -0.5f, 0.5f},{0.5f, -0.5f, -0.5f}}; +const char fb[6][4] = {{1, 5, 6, 2},{3, 7, 4, 0},{0, 1, 2, 3},{7, 6, 5, 4},{2, 6, 7, 3},{0, 4, 5, 1}}; +const char nb[6][3] = {{0, 0, 1},{0, 0, -1},{0, 1, 0},{0, -1, 0},{1, 0, 0},{-1, 0, 0}}; +//const char t[5][2] = {{0, 1},{0, 3},{2, 3},{2, 1},{0, 1}}; + +Model model; + +#pragma mark Model::File Ops + +void Model::Save(const char* filename) +{ +} + +void Model::Load(const char* filename) +{ +} + +#pragma mark Model::Calculations + +const Vector3 Model::GetCurrentValue(const int& cube, const AnimKey::Type& type) +{ + int currentAnim = 0; + int i1 = -1; + int i2 = -1; + const Anim& anim = anims[currentAnim]; + for (int i = 0; i < anim.numKeys; i++) { + const AnimKey& k = anim.keys[i]; + if (k.cube == cube && k.type == type) { + if (k.t == Editor::t) { + i1 = i2 = i; + } else if (k.t < Editor::t) { + i1 = i; + } else if (k.t > Editor::t) { + if (i1 == -1) { + i1 = i2 = i; + break; + } else { + i2 = i; + break; + } + } + } + } + if (i1 == -1) { + if (type == AnimKey::Type::Rotation) { + return Vector3(0, 0, 0); + } else if (type == AnimKey::Type::Position) { + return cubes[cube].position; + } else { + return cubes[cube].size; + } + } + if (i1 == i2 or i2 == -1) return anim.keys[i1].value; + + // MUCH OBFUSCATED, SO DEBUGGABLE + return anim.keys[i1].value + ((anim.keys[i2].value - anim.keys[i1].value) * (Editor::t - anim.keys[i1].t)/(anim.keys[i2].t - anim.keys[i1].t)); +} + +void Model::GetCurrentTransformation(const int& cube, Vector3& position, Vector3& rotation, Vector3& scale) +{ + position = GetCurrentValue(cube, AnimKey::Type::Position); + rotation = GetCurrentValue(cube, AnimKey::Type::Rotation); + scale = GetCurrentValue(cube, AnimKey::Type::Scale); +} + +void Model::Calculate() +{ + for (int i = 0; i < numCubes; i++) { + Vector3 position, rotation, scale, pivot; + GetCurrentTransformation(i, position, rotation, scale); + pivot = cubes[i].pivot; + localMatrix[i].identity(); + localMatrix[i].translate(pivot); + localMatrix[i].scale(scale.x, scale.y, scale.z); + localMatrix[i].rotateX(rotation.x); + localMatrix[i].rotateY(rotation.y); + localMatrix[i].rotateZ(rotation.z); + localMatrix[i].translate(position-pivot); + + } + + for (int i = 0; i < numCubes; i++) { + finalMatrix[i] = localMatrix[i]; + int parent = cubes[i].parent; + while (parent != -1) { + finalMatrix[i] *= localMatrix[parent]; + parent = cubes[parent].parent; + } + } +} + +#pragma mark Model::Draw + +void Model::DrawSolid() +{ + glColor4ub(255, 255, 255, 255); + for (int c = 0; c < numCubes; c++) { + if (cubes[c].selected) continue; + const Cube& cube = cubes[c]; + glPushMatrix(); + glBegin(GL_QUADS); + for (int f = 0; f<6; f++) { + if (cube.faces[f].selected) continue; + for (int i = 0; i < 4; i++) { + glNormal3f(nb[f][0], nb[f][1], nb[f][2]); + glTexCoord2f(float(cube.faces[f].uv[i].x)/32.0f, float(cube.faces[f].uv[i].y)/32.0f); + glVertex3f(cube.position[0]+vb[fb[f][i]][0]*cube.size[0], cube.position[1]+vb[fb[f][i]][1]*cube.size[1], cube.position[2]+vb[fb[f][i]][2]*cube.size[2]); + } + } + glEnd(); + glPopMatrix(); + } + glColor4ub(255, 0, 0, 255); + for (int c = 0; c < numCubes; c++) { + const Cube& cube = cubes[c]; + glPushMatrix(); + //glRotatef(cube.rot[0], 1, 0, 0); + //glRotatef(cube.rot[1], 0, 1, 0); + //glRotatef(cube.rot[2], 0, 0, 1); + glBegin(GL_QUADS); + for (int f = 0; f<6; f++) { + if (!cube.selected and !cube.faces[f].selected) continue; + for (int i = 0; i < 4; i++) { + glNormal3f(nb[f][0], nb[f][1], nb[f][2]); + glTexCoord2f(float(cube.faces[f].uv[i].x)/32.0f, float(cube.faces[f].uv[i].y)/32.0f); + glVertex3f(cube.position[0]+vb[fb[f][i]][0]*cube.size[0], cube.position[1]+vb[fb[f][i]][1]*cube.size[1], cube.position[2]+vb[fb[f][i]][2]*cube.size[2]); + } + } + glEnd(); + glPopMatrix(); + } +} + +void Model::DrawWire() +{ + Renderer::SetState(RENDER_DEPTH); + glCullFace(GL_FRONT); + glDepthMask(GL_FALSE); + + glColor4ub(128, 128, 128, 255); + for (int c = 0; c < numCubes; c++) { + if (cubes[c].selected) continue; + const Cube& cube = cubes[c]; + glPushMatrix(); + //glRotatef(cube.rot[0], 1, 0, 0); + //glRotatef(cube.rot[1], 0, 1, 0); + //glRotatef(cube.rot[2], 0, 0, 1); + glBegin(GL_QUADS); + for (int f = 0; f<6; f++) { + if (cube.faces[f].selected) continue; + for (int i = 0; i < 4; i++) { + glNormal3f(nb[f][0], nb[f][1], nb[f][2]); + glVertex3f(cube.position[0]+vb[fb[f][i]][0]*cube.size[0], cube.position[1]+vb[fb[f][i]][1]*cube.size[1], cube.position[2]+vb[fb[f][i]][2]*cube.size[2]); + } + } + glEnd(); + glPopMatrix(); + } + glColor4ub(128, 0, 0, 255); + for (int c = 0; c < numCubes; c++) { + const Cube& cube = cubes[c]; + glPushMatrix(); + //glRotatef(cube.rot[0], 1, 0, 0); + //glRotatef(cube.rot[1], 0, 1, 0); + //glRotatef(cube.rot[2], 0, 0, 1); + glBegin(GL_QUADS); + for (int f = 0; f<6; f++) { + if (!cube.selected and !cube.faces[f].selected) continue; + for (int i = 0; i < 4; i++) { + glNormal3f(nb[f][0], nb[f][1], nb[f][2]); + glVertex3f(cube.position[0]+vb[fb[f][i]][0]*cube.size[0], cube.position[1]+vb[fb[f][i]][1]*cube.size[1], cube.position[2]+vb[fb[f][i]][2]*cube.size[2]); + } + } + glEnd(); + glPopMatrix(); + } + + glDepthMask(GL_TRUE); + glCullFace(GL_BACK); + + glColor4ub(255, 255, 255, 255); + for (int c = 0; c < numCubes; c++) { + if (cubes[c].selected) continue; + const Cube& cube = cubes[c]; + glPushMatrix(); + //glRotatef(cube.rot[0], 1, 0, 0); + //glRotatef(cube.rot[1], 0, 1, 0); + //glRotatef(cube.rot[2], 0, 0, 1); + glBegin(GL_QUADS); + for (int f = 0; f<6; f++) { + if (cube.faces[f].selected) continue; + for (int i = 0; i < 4; i++) { + glNormal3f(nb[f][0], nb[f][1], nb[f][2]); + glVertex3f(cube.position[0]+vb[fb[f][i]][0]*cube.size[0], cube.position[1]+vb[fb[f][i]][1]*cube.size[1], cube.position[2]+vb[fb[f][i]][2]*cube.size[2]); + } + } + glEnd(); + glPopMatrix(); + } + glColor4f(1, 0, 0, 1); + for (int c = 0; c < numCubes; c++) { + const Cube& cube = cubes[c]; + glPushMatrix(); + //glRotatef(cube.rot[0], 1, 0, 0); + //glRotatef(cube.rot[1], 0, 1, 0); + //glRotatef(cube.rot[2], 0, 0, 1); + glBegin(GL_QUADS); + for (int f = 0; f<6; f++) { + if (!cube.selected and !cube.faces[f].selected) continue; + for (int i = 0; i < 4; i++) { + glNormal3f(nb[f][0], nb[f][1], nb[f][2]); + glVertex3f(cube.position[0]+vb[fb[f][i]][0]*cube.size[0], cube.position[1]+vb[fb[f][i]][1]*cube.size[1], cube.position[2]+vb[fb[f][i]][2]*cube.size[2]); + } + } + glEnd(); + glPopMatrix(); + } +} + +void Model::DrawUV() +{ + glColor4ub(255, 255, 255, 255); + glBegin(GL_QUADS); + glTexCoord2f(0.0f, 0.0f); + glVertex2f(-16.0f, -16.0f); + glTexCoord2f(0.0f, 1.0f); + glVertex2f(-16.0f, 16.0f); + glTexCoord2f(1.0f, 1.0f); + glVertex2f(16.0f, 16.0f); + glTexCoord2f(1.0f, 0.0f); + glVertex2f(16.0f, -16.0f); + glEnd(); + + Renderer::SetState(RENDER_NONE); + + glColor4ub(255, 255, 255, 255); + for (int c = 0; c < numCubes; c++) { + if (cubes[c].selected) continue; + const Cube& cube = cubes[c]; + glBegin(GL_QUADS); + for (int f = 0; f<6; f++) { + if (cube.faces[f].selected) continue; + const CubeFace& face = cube.faces[f]; + for (int i = 0; i < 4; i++) { + glVertex2f(-(16-face.uv[i].x), -(16-face.uv[i].y)); + } + } + glEnd(); + } + glColor4ub(255, 0, 0, 255); + for (int c = 0; c < numCubes; c++) { + const Cube& cube = cubes[c]; + glBegin(GL_QUADS); + for (int f = 0; f<6; f++) { + if (!cube.selected and !cube.faces[f].selected) continue; + const CubeFace& face = cube.faces[f]; + for (int i = 0; i < 4; i++) { + glVertex2f(-(16-face.uv[i].x), -(16-face.uv[i].y)); + } + } + glEnd(); + } + +} + +Color Model::Pick(const float x, const float y) +{ + glClearColor(1, 1, 1, 1); + glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); + for (int c = 0; c < numCubes; c++) { + const Cube& cube = cubes[c]; + glPushMatrix(); + glBegin(GL_QUADS); + for (int f = 0; f < 6; f++) { + for (int i = 0; i < 4; i++) { + glColor4ub(c, f, 0, 255); + //glNormal3f(nb[f][0], nb[f][1], nb[f][2]); + //glTexCoord2f(float(cube.faces[f].uv[i].x)/32.0f, float(cube.faces[f].uv[i].y)/32.0f); + glVertex3f(cube.position[0]+vb[fb[f][i]][0]*cube.size[0], cube.position[1]+vb[fb[f][i]][1]*cube.size[1], cube.position[2]+vb[fb[f][i]][2]*cube.size[2]); + } + } + glEnd(); + glPopMatrix(); + } + Color color; + glReadPixels(x, SCREEN_HEIGHT-y, 1, 1, GL_RGBA, GL_UNSIGNED_BYTE, &color.r); + printf("PICK: %i, %i, %i, %i\n", color.r, color.g, color.b, color.a); + return color; +} + +Color Model::PickPaint(const float x, const float y) +{ + glClearColor(1, 1, 1, 1); + glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); + for (int c = 0; c < numCubes; c++) { + const Cube& cube = cubes[c]; + glPushMatrix(); + glBegin(GL_QUADS); + for (int f = 0; f < 6; f++) { + for (int i = 0; i < 4; i++) { + uint8_t val = (c << 3) + f; + glColor4ub(val, cube.faces[f].uv[i].x*4, cube.faces[f].uv[i].y*4, 255); + //glNormal3f(nb[f][0], nb[f][1], nb[f][2]); + //glTexCoord2f(float(cube.faces[f].uv[i].x)/32.0f, float(cube.faces[f].uv[i].y)/32.0f); + glVertex3f(cube.position[0]+vb[fb[f][i]][0]*cube.size[0], cube.position[1]+vb[fb[f][i]][1]*cube.size[1], cube.position[2]+vb[fb[f][i]][2]*cube.size[2]); + } + } + glEnd(); + glPopMatrix(); + } + Color color; + glReadPixels(x, SCREEN_HEIGHT-y, 1, 1, GL_RGBA, GL_UNSIGNED_BYTE, &color.r); + color /= 4; + printf("PICK: %i, %i, %i, %i\n", color.r, color.g, color.b, color.a); + return color; +} + +Color Model::PickPixel(const float x, const float y) +{ + glClearColor(1, 1, 1, 1); + glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); + glBegin(GL_QUADS); + glColor4ub(0, 0, 255, 255); + glVertex2f(-16.0f, -16.0f); + glColor4ub(0, 128, 255, 255); + glVertex2f(-16.0f, 16.0f); + glColor4ub(128, 128, 255, 255); + glVertex2f(16.0f, 16.0f); + glColor4ub(128, 0, 255, 255); + glVertex2f(16.0f, -16.0f); + glEnd(); + + Color color; + glReadPixels(x, SCREEN_HEIGHT-y, 1, 1, GL_RGBA, GL_UNSIGNED_BYTE, &color.r); + color /= 4; + printf("PICK: %i, %i, %i, %i\n", color.r, color.g, color.b, color.a); + return color; +} + +#pragma mark Model::Cubes + +int Model::GetSelectedCube() +{ + int selected = -1; + for (int i = 0; i < numCubes; i++) { + if (cubes[i].selected) { + if (selected == -1) { + selected = i; + } else { + return -1; + } + } + } + return selected; +} + +void Model::SelectCube(const uint8_t index, const bool inclusive) +{ + if (not inclusive) SelectAllCubes(false); + if (index == 255) return; + assert(index < numCubes); + cubes[index].selected = not cubes[index].selected; +} + +void Model::SelectAllCubes(const bool select) +{ + for (int i = 0; i < numCubes; i++) { + cubes[i].selected = select; + } +} + +void Model::NewCube() +{ + if (numCubes == MAX_CUBES) return; + SelectAllCubes(false); + cubes[numCubes].name[0] = '\0'; + cubes[numCubes].parent = -1; + cubes[numCubes].pivot = {0, 0, 0}; + cubes[numCubes].position = {0, 0, 0}; + cubes[numCubes].size = {8, 8, 8}; + cubes[numCubes].selected = true; + for (int i = 0; i < 6; i++) { + cubes[numCubes].faces[i].selected = false; + cubes[numCubes].faces[i].uv[0] = {32, 32}; + cubes[numCubes].faces[i].uv[1] = {32, 0}; + cubes[numCubes].faces[i].uv[2] = {0, 0}; + cubes[numCubes].faces[i].uv[3] = {0, 32}; + } + numCubes++; +} + +void Model::DeleteCube() +{ + if (numCubes == 0) return; + + int numCubesSelected = 0; + for (int i = 0; i < numCubes; i++) if (cubes[i].selected) numCubesSelected++; + if (numCubesSelected == 0) return; + + for (int i = 0; i < numCubes; i++) { + if (cubes[i].selected) { + numCubes--; + if (numCubes > 1 and i != numCubes) { + cubes[i] = cubes[numCubes]; + for (int c = 0; c < numCubes; c++) { + if (cubes[c].parent == i) { + cubes[c].parent = -1; + } else if (cubes[c].parent == numCubes) { + cubes[c].parent = i; + } + } + for (int a = 0; a < numAnims; a++) { + for (int k = 0; k < anims[a].numKeys; k++) { + if (anims[a].keys[k].cube == i) { + anims[a].numKeys--; + if (anims[a].numKeys > 1 and k != anims[a].numKeys) { + anims[a].keys[k] = anims[a].keys[anims[a].numKeys]; + } + k--; + } else if (anims[a].keys[k].cube == anims[a].numKeys) { + anims[a].keys[k].cube = i; + } + } + } + i--; + } + } + } +} + +void Model::DupCube() +{ + int numCubesSelected = 0; + for (int i = 0; i < numCubes; i++) if (cubes[i].selected) numCubesSelected++; + if (numCubes+numCubesSelected > MAX_CUBES) return; + + int numCubesBeforeEditing = numCubes; + for (int c = 0; c < numCubesBeforeEditing; c++) { + if (cubes[c].selected) { + cubes[c].selected = false; + cubes[numCubes].name[0] = '\0'; + cubes[numCubes].parent = cubes[c].parent; + cubes[numCubes].pivot = cubes[c].pivot; + cubes[numCubes].position = cubes[c].position; + cubes[numCubes].size = cubes[c].size; + cubes[numCubes].selected = true; + for (int i = 0; i < 6; i++) { + cubes[numCubes].faces[i].selected = false; + cubes[numCubes].faces[i].uv[0] = cubes[c].faces[i].uv[0]; + cubes[numCubes].faces[i].uv[1] = cubes[c].faces[i].uv[1]; + cubes[numCubes].faces[i].uv[2] = cubes[c].faces[i].uv[2]; + cubes[numCubes].faces[i].uv[3] = cubes[c].faces[i].uv[3]; + } + numCubes++; + } + } +} + +void Model::GrabCubes(const float x, const float y, const float z) +{ + for (int i = 0; i < numCubes; i++) { + if (cubes[i].selected) { + cubes[i].position.x += x; + cubes[i].position.y += y; + cubes[i].position.z += z; + } + } +} + +void Model::ScaleCubes(const float x, const float y, const float z) +{ + for (int i = 0; i < numCubes; i++) { + if (cubes[i].selected) { + cubes[i].size.x += x; + cubes[i].size.y += y; + cubes[i].size.z += z; + } + } +} + +#pragma mark Model::Faces + +ivec2 Model::GetSelectedFace() +{ + ivec2 selected {-1, -1}; + for (int i = 0; i < numCubes; i++) { + for (int j = 0; j < 6; j++) { + if (cubes[i].faces[j].selected) { + if (selected.x == -1) { + selected = {i, j}; + } else { + return {-1, -1}; + } + } + } + } + return selected; +} + + +void Model::SelectFace(const uint8_t index, const uint8_t face, const bool inclusive) +{ + if (not inclusive) SelectAllFaces(false); + if (index == 255) return; + assert(index < numCubes); + assert(face < 6); + cubes[index].faces[face].selected = not cubes[index].faces[face].selected; +} + +void Model::SelectAllFaces(const bool select) +{ + for (int i = 0; i < numCubes; i++) { + for (int j = 0; j < 6; j++) { + cubes[i].faces[j].selected = select; + } + } +} + +void Model::ClearFaces() +{ + for (int i = 0; i < numCubes; i++) { + for (int j = 0; j < 6; j++) { + if (cubes[i].faces[j].selected) cubes[i].faces[j].Clear(); + } + } +} + +void Model::RotateFaces() +{ + for (int i = 0; i < numCubes; i++) { + for (int j = 0; j < 6; j++) { + if (cubes[i].faces[j].selected) cubes[i].faces[j].Rotate(); + } + } +} + +void Model::FlipHFaces() +{ + for (int i = 0; i < numCubes; i++) { + for (int j = 0; j < 6; j++) { + if (cubes[i].faces[j].selected) cubes[i].faces[j].FlipH(); + } + } +} + +void Model::FlipVFaces() +{ + for (int i = 0; i < numCubes; i++) { + for (int j = 0; j < 6; j++) { + if (cubes[i].faces[j].selected) cubes[i].faces[j].FlipV(); + } + } +} + +void Model::GrabFaces(const float x, const float y) +{ + for (int i = 0; i < numCubes; i++) { + for (int j = 0; j < 6; j++) { + if (cubes[i].faces[j].selected) { + for (int k = 0; k < 4; k++) { + cubes[i].faces[j].uv[k].x += x; + cubes[i].faces[j].uv[k].y += y; + } + } + } + } +} + +void Model::ScaleFaces(const float x, const float y) +{ + for (int i = 0; i < numCubes; i++) { + for (int j = 0; j < 6; j++) { + if (cubes[i].faces[j].selected) { + cubes[i].faces[j].uv[0].x += x; + cubes[i].faces[j].uv[0].y += y; + cubes[i].faces[j].uv[1].x += x; + cubes[i].faces[j].uv[3].y += y; + } + } + } +} + +#pragma mark CubeFace::Methods + +void CubeFace::Clear() +{ + uv[0] = uv[1] = {0,0}; + uv[2] = uv[3] = {32,32}; +} + +void CubeFace::Rotate() +{ + Swap(uv[0], uv[1]); + Swap(uv[1], uv[2]); + Swap(uv[2], uv[3]); +} + +void CubeFace::FlipH() +{ + Swap(uv[0], uv[3]); + Swap(uv[1], uv[2]); +} + +void CubeFace::FlipV() +{ + Swap(uv[0], uv[1]); + Swap(uv[2], uv[3]); +} diff --git a/Model.h b/Model.h new file mode 100644 index 0000000..db24e34 --- /dev/null +++ b/Model.h @@ -0,0 +1,96 @@ +#pragma once + +#include "common.h" + +#define MAX_CUBES 20 +#define MAX_ANIMS 40 +#define MAX_KEYS 256 + +struct CubeFace +{ + Vector2 uv[4] {{32, 32}, {32, 0}, {0, 0}, {0, 32}}; + char rot {0}; + bool selected {false}; + + void Clear(); + void Rotate(); + void FlipH(); + void FlipV(); +}; + +struct Cube +{ + char name[10] {""}; + CubeFace faces[6]; + Vector3 position {0, 0, 0}; + Vector3 pivot {0, 0, 0}; + Vector3 size {8, 8, 8}; + int8_t parent {-1}; + bool selected {false}; +}; + +struct AnimKey +{ + enum class Type { Position, Rotation, Scale }; + + float t {0.0f}; + uint8_t cube {0}; + Type type {Type::Rotation}; + Vector3 value {0, 0, 0}; +}; + +struct Anim +{ + char name[10] {""}; + uint8_t numKeys {0}; + AnimKey keys[MAX_KEYS]; +}; + +struct Model +{ + uint8_t numCubes {1}; + Cube cubes[MAX_CUBES]; + uint8_t numAnims {1}; + Anim anims[MAX_ANIMS]; + + Matrix4 localMatrix[MAX_CUBES]; + Matrix4 finalMatrix[MAX_CUBES]; + + void Save(const char* filename); + void Load(const char* filename); + void Calculate(); + void DrawSolid(); + void DrawWire(); + void DrawUV(); + Color Pick(const float x, const float y); + Color PickPaint(const float x, const float y); + Color PickPixel(const float x, const float y); + + int GetSelectedCube(); + void SelectCube(const uint8_t index, const bool inclusive); + void SelectAllCubes(const bool select = true); + void NewCube(); + void DeleteCube(); + void DupCube(); + void GrabCubes(const float x, const float y, const float z); + void ScaleCubes(const float x, const float y, const float z); + + ivec2 GetSelectedFace(); + void SelectFace(const uint8_t index, const uint8_t face, const bool inclusive); + void SelectAllFaces(const bool select = true); + void ClearFaces(); + void RotateFaces(); + void FlipHFaces(); + void FlipVFaces(); + void GrabFaces(const float x, const float y); + void ScaleFaces(const float x, const float y); + + void DeleteKey(const int anim, const int key); + +private: + + const Vector3 GetCurrentValue(const int& cube, const AnimKey::Type& type); + void GetCurrentTransformation(const int& cube, Vector3& position, Vector3& rotation, Vector3& scale); +}; + +extern Model model; diff --git a/Vectors.h b/Vectors.h new file mode 100755 index 0000000..4fff31f --- /dev/null +++ b/Vectors.h @@ -0,0 +1,687 @@ +/////////////////////////////////////////////////////////////////////////////// +// Vectors.h +// ========= +// 2D/3D/4D vectors +// +// AUTHOR: Song Ho Ahn (song.ahn@gmail.com) +// CREATED: 2007-02-14 +// UPDATED: 2013-01-20 +// +// Copyright (C) 2007-2013 Song Ho Ahn +/////////////////////////////////////////////////////////////////////////////// + + +#ifndef VECTORS_H_DEF +#define VECTORS_H_DEF + +#include +#include + +struct Rectangle { + float x, y, w, h; +}; + +template +struct generic_vec2 +{ + union { + struct { + T x; + T y; + }; + struct { + T r; + T g; + }; + struct { + T u; + T v; + }; + }; + + generic_vec2() : x(0.0f), y(0.0f) {} + generic_vec2(const T& x, const T& y) : x(x), y(y) {} + + inline generic_vec2 operator-() const { return {-x,-y}; } + inline generic_vec2 operator+(const generic_vec2& o) const { return {x+o.x, y+o.y}; } + inline generic_vec2 operator-(const generic_vec2& o) const { return {x-o.x, y-o.y}; } + inline generic_vec2 operator*(const generic_vec2& o) const { return {x*o.x, y*o.y}; } + inline generic_vec2 operator/(const generic_vec2& o) const { return {x/o.x, y/o.y}; } + inline generic_vec2& operator+=(const generic_vec2& o) { x+=o.x; y+=o.y; return *this; } + inline generic_vec2& operator-=(const generic_vec2& o) { x-=o.x; y-=o.y; return *this; } + inline generic_vec2& operator*=(const generic_vec2& o) { x*=o.x; y*=o.y; return *this; } + inline generic_vec2& operator/=(const generic_vec2& o) { x/=o.x; y/=o.y; return *this; } + + inline generic_vec2 operator+(const T& o) const { return {x+o, y+o}; } + inline generic_vec2 operator-(const T& o) const { return {x-o, y-o}; } + inline generic_vec2 operator*(const T& o) const { return {x*o, y*o}; } + inline generic_vec2 operator/(const T& o) const { return {x/o, y/o}; } + inline generic_vec2& operator+=(const T& o) { x+=o; y+=o; return *this; } + inline generic_vec2& operator-=(const T& o) { x-=o; y-=o; return *this; } + inline generic_vec2& operator*=(const T& o) { x*=o; y*=o; return *this; } + inline generic_vec2& operator/=(const T& o) { x/=o; y/=o; return *this; } + + inline bool operator==(const generic_vec2& o) const { return (x==o.x) and (y==o.y); } + inline bool operator!=(const generic_vec2& o) const { return (x!=o.x) or (y!=o.y); } + inline T operator[](int index) const { return (&x)[index]; } + inline T& operator[](int index) { return (&x)[index]; } +}; +typedef generic_vec2 bvec2; +typedef generic_vec2 ivec2; +typedef generic_vec2 uvec2; +typedef generic_vec2 vec2; + +template +struct generic_vec3 +{ + union { + struct { T x, y, z; }; + struct { T r, g, b; }; + struct { T u, v, s; }; + }; + + generic_vec3(const T& x, const T& y, const T& z) : x(x), y(y), z(z) {} + generic_vec3(const generic_vec2& xy, const T& z) : x(xy.x), y(xy.y), z(z) {} + generic_vec3(const T& x, const generic_vec2& yz) : x(x), y(yz.x), z(yz.y) {} + + inline generic_vec3 operator-() const { return {-x,-y,-z}; } + inline generic_vec3 operator+(const generic_vec3& o) const { return {x+o.x, y+o.y, z+o.z}; } + inline generic_vec3 operator-(const generic_vec3& o) const { return {x-o.x, y-o.y, z-o.z}; } + inline generic_vec3 operator*(const generic_vec3& o) const { return {x*o.x, y*o.y, z*o.z}; } + inline generic_vec3 operator/(const generic_vec3& o) const { return {x/o.x, y/o.y, z/o.z}; } + inline generic_vec3& operator+=(const generic_vec3& o) { x+=o.x; y+=o.y; z+=o.z; return *this; } + inline generic_vec3& operator-=(const generic_vec3& o) { x-=o.x; y-=o.y; z-=o.z; return *this; } + inline generic_vec3& operator*=(const generic_vec3& o) { x*=o.x; y*=o.y; z*=o.z; return *this; } + inline generic_vec3& operator/=(const generic_vec3& o) { x/=o.x; y/=o.y; z/=o.z; return *this; } + + inline generic_vec3 operator+(const T& o) const { return {x+o, y+o, z+o}; } + inline generic_vec3 operator-(const T& o) const { return {x-o, y-o, z-o}; } + inline generic_vec3 operator*(const T& o) const { return {x*o, y*o, z*o}; } + inline generic_vec3 operator/(const T& o) const { return {x/o, y/o, z/o}; } + inline generic_vec3& operator+=(const T& o) { x+=o; y+=o; z+=o; return *this; } + inline generic_vec3& operator-=(const T& o) { x-=o; y-=o; z-=o; return *this; } + inline generic_vec3& operator*=(const T& o) { x*=o; y*=o; z*=o; return *this; } + inline generic_vec3& operator/=(const T& o) { x/=o; y/=o; z/=o; return *this; } + + inline bool operator==(const generic_vec3& o) const { return (x==o.x) and (y==o.y) and (z==o.z); } + inline bool operator!=(const generic_vec3& o) const { return (x!=o.x) or (y!=o.y) or (z!=o.z); } + inline T operator[](int index) const { return (&x)[index]; } + inline T& operator[](int index) { return (&x)[index]; } +}; +typedef generic_vec3 bvec3; +typedef generic_vec3 ivec3; +typedef generic_vec3 uvec3; +typedef generic_vec3 vec3; + +template +struct generic_vec4 +{ + union { + struct { T x, y, z, w; }; + struct { T r, g, b, a; }; + struct { T u, v, s, t; }; + }; + + generic_vec4() : x(0), y(0), z(0), w(0) {} + generic_vec4(const T& x,const T& y, const T& z, const T& w) : x(x), y(y), z(z), w(w) {} + generic_vec4(const generic_vec2& xy, const T& z, const T& w) : x(xy.x), y(xy.y), z(z), w(w) {} + generic_vec4(const T& x, const generic_vec2& yz, const T& w) : x(x), y(yz.x), z(yz.y), w(w) {} + generic_vec4(const T& x, const T& y, const generic_vec2& zw) : x(x), y(y), z(zw.x), w(zw.y) {} + generic_vec4(const generic_vec2& xy, const generic_vec2& zw) : x(xy.x), y(xy.y), z(zw.x), w(zw.y) {} + + generic_vec4(const generic_vec3& xyz, const T& w) : x(xyz.x), y(xyz.y), z(xyz.z), w(w) {} + generic_vec4(const T& x, const generic_vec3& yzw) : x(x), y(yzw.x), z(yzw.y), w(yzw.z) {} + + + inline generic_vec4 operator-() const { return {-x,-y,-z, -w}; } + inline generic_vec4 operator+(const generic_vec4& o) const { return {x+o.x, y+o.y, z+o.z, w+o.w}; } + inline generic_vec4 operator-(const generic_vec4& o) const { return {x-o.x, y-o.y, z-o.z, w-o.w}; } + inline generic_vec4 operator*(const generic_vec4& o) const { return {x*o.x, y*o.y, z*o.z, w*o.w}; } + inline generic_vec4 operator/(const generic_vec4& o) const { return {x/o.x, y/o.y, z/o.z, w/o.w}; } + inline generic_vec4& operator+=(const generic_vec4& o) { x+=o.x; y+=o.y; z+=o.z; w+=o.w; return *this; } + inline generic_vec4& operator-=(const generic_vec4& o) { x-=o.x; y-=o.y; z-=o.z; w-=o.w; return *this; } + inline generic_vec4& operator*=(const generic_vec4& o) { x*=o.x; y*=o.y; z*=o.z; w*=o.w; return *this; } + inline generic_vec4& operator/=(const generic_vec4& o) { x/=o.x; y/=o.y; z/=o.z; w/=o.w; return *this; } + + inline generic_vec4 operator+(const T& o) const { return {x+o, y+o, z+o, w+o}; } + inline generic_vec4 operator-(const T& o) const { return {x-o, y-o, z-o, w-o}; } + inline generic_vec4 operator*(const T& o) const { return {x*o, y*o, z*o, w*o}; } + inline generic_vec4 operator/(const T& o) const { return {x/o, y/o, z/o, w/o}; } + inline generic_vec4& operator+=(const T& o) { x+=o; y+=o; z+=o; w+=o; return *this; } + inline generic_vec4& operator-=(const T& o) { x-=o; y-=o; z-=o; w-=o; return *this; } + inline generic_vec4& operator*=(const T& o) { x*=o; y*=o; z*=o; w*=o; return *this; } + inline generic_vec4& operator/=(const T& o) { x/=o; y/=o; z/=o; w/=o; return *this; } + + inline bool operator==(const generic_vec4& o) const { return (x==o.x) and (y==o.y) and (z==o.z) and (w==o.w); } + inline bool operator!=(const generic_vec4& o) const { return (x!=o.x) or (y!=o.y) or (z!=o.z) or (w!=o.w); } + inline T operator[](int index) const { return (&x)[index]; } + inline T& operator[](int index) { return (&x)[index]; } +}; +typedef generic_vec4 bvec4; +typedef generic_vec4 ivec4; +typedef generic_vec4 uvec4; +typedef generic_vec4 vec4; +typedef generic_vec4 ubvec4; +typedef ubvec4 Color; + +/////////////////////////////////////////////////////////////////////////////// +// 2D vector +/////////////////////////////////////////////////////////////////////////////// +struct Vector2 +{ + float x; + float y; + + // ctors + Vector2() : x(0), y(0) {}; + Vector2(float x, float y) : x(x), y(y) {}; + + // utils functions + void set(float x, float y); + float length() const; // + float distance(const Vector2& vec) const; // distance between two vectors + Vector2& normalize(); // + float dot(const Vector2& vec) const; // dot product + bool equal(const Vector2& vec, float e) const; // compare with epsilon + bool inside(const Vector2& pos, const Vector2& size) const; + + // operators + Vector2 operator-() const; // unary operator (negate) + Vector2 operator+(const Vector2& rhs) const; // add rhs + Vector2 operator-(const Vector2& rhs) const; // subtract rhs + Vector2& operator+=(const Vector2& rhs); // add rhs and update this object + Vector2& operator-=(const Vector2& rhs); // subtract rhs and update this object + Vector2 operator*(const float scale) const; // scale + Vector2 operator*(const Vector2& rhs) const; // multiply each element + Vector2& operator*=(const float scale); // scale and update this object + Vector2& operator*=(const Vector2& rhs); // multiply each element and update this object + Vector2 operator/(const float scale) const; // inverse scale + Vector2& operator/=(const float scale); // scale and update this object + bool operator==(const Vector2& rhs) const; // exact compare, no epsilon + bool operator!=(const Vector2& rhs) const; // exact compare, no epsilon + bool operator<(const Vector2& rhs) const; // comparison for sort + float operator[](int index) const; // subscript operator v[0], v[1] + float& operator[](int index); // subscript operator v[0], v[1] + + friend Vector2 operator*(const float a, const Vector2 vec); + friend std::ostream& operator<<(std::ostream& os, const Vector2& vec); +}; + + + +/////////////////////////////////////////////////////////////////////////////// +// 3D vector +/////////////////////////////////////////////////////////////////////////////// +struct Vector3 +{ + float x; + float y; + float z; + + // ctors + Vector3() : x(0), y(0), z(0) {}; + Vector3(float x, float y, float z) : x(x), y(y), z(z) {}; + + // utils functions + void set(float x, float y, float z); + float length() const; // + float distance(const Vector3& vec) const; // distance between two vectors + Vector3& normalize(); // + float dot(const Vector3& vec) const; // dot product + Vector3 cross(const Vector3& vec) const; // cross product + bool equal(const Vector3& vec, float e) const; // compare with epsilon + + // operators + Vector3 operator-() const; // unary operator (negate) + Vector3 operator+(const Vector3& rhs) const; // add rhs + Vector3 operator-(const Vector3& rhs) const; // subtract rhs + Vector3& operator+=(const Vector3& rhs); // add rhs and update this object + Vector3& operator-=(const Vector3& rhs); // subtract rhs and update this object + Vector3 operator*(const float scale) const; // scale + Vector3 operator*(const Vector3& rhs) const; // multiplay each element + Vector3& operator*=(const float scale); // scale and update this object + Vector3& operator*=(const Vector3& rhs); // product each element and update this object + Vector3 operator/(const float scale) const; // inverse scale + Vector3& operator/=(const float scale); // scale and update this object + bool operator==(const Vector3& rhs) const; // exact compare, no epsilon + bool operator!=(const Vector3& rhs) const; // exact compare, no epsilon + bool operator<(const Vector3& rhs) const; // comparison for sort + float operator[](int index) const; // subscript operator v[0], v[1] + float& operator[](int index); // subscript operator v[0], v[1] + + friend Vector3 operator*(const float a, const Vector3 vec); + friend std::ostream& operator<<(std::ostream& os, const Vector3& vec); +}; + + + +/////////////////////////////////////////////////////////////////////////////// +// 4D vector +/////////////////////////////////////////////////////////////////////////////// +struct Vector4 +{ + float x; + float y; + float z; + float w; + + // ctors + Vector4() : x(0), y(0), z(0), w(0) {}; + Vector4(float x, float y, float z, float w) : x(x), y(y), z(z), w(w) {}; + Vector4(Vector3 v, float w = 1) : x(v.x), y(v.y), z(v.z), w(w) {}; + Vector4(Vector2 a, Vector2 b) : x(a.x), y(a.y), z(b.x), w(b.y) {}; + + // utils functions + void set(float x, float y, float z, float w); + float length() const; // + float distance(const Vector4& vec) const; // distance between two vectors + Vector4& normalize(); // + float dot(const Vector4& vec) const; // dot product + bool equal(const Vector4& vec, float e) const; // compare with epsilon + + // operators + Vector4 operator-() const; // unary operator (negate) + Vector4 operator+(const Vector4& rhs) const; // add rhs + Vector4 operator-(const Vector4& rhs) const; // subtract rhs + Vector4& operator+=(const Vector4& rhs); // add rhs and update this object + Vector4& operator-=(const Vector4& rhs); // subtract rhs and update this object + Vector4 operator*(const float scale) const; // scale + Vector4 operator*(const Vector4& rhs) const; // multiply each element + Vector4& operator*=(const float scale); // scale and update this object + Vector4& operator*=(const Vector4& rhs); // multiply each element and update this object + Vector4 operator/(const float scale) const; // inverse scale + Vector4& operator/=(const float scale); // scale and update this object + bool operator==(const Vector4& rhs) const; // exact compare, no epsilon + bool operator!=(const Vector4& rhs) const; // exact compare, no epsilon + bool operator<(const Vector4& rhs) const; // comparison for sort + float operator[](int index) const; // subscript operator v[0], v[1] + float& operator[](int index); // subscript operator v[0], v[1] + + Vector2 GetPosition() { return Vector2(x, y); } + Vector2 GetSize() { return Vector2(z, w); } + + friend Vector4 operator*(const float a, const Vector4 vec); + friend std::ostream& operator<<(std::ostream& os, const Vector4& vec); +}; + + + +// fast math routines from Doom3 SDK +inline float invSqrt(float x) +{ + float xhalf = 0.5f * x; + int i = *(int*)&x; // get bits for floating value + i = 0x5f3759df - (i>>1); // gives initial guess + x = *(float*)&i; // convert bits back to float + x = x * (1.5f - xhalf*x*x); // Newton step + return x; +} + + + +/////////////////////////////////////////////////////////////////////////////// +// inline functions for Vector2 +/////////////////////////////////////////////////////////////////////////////// +inline Vector2 Vector2::operator-() const { + return Vector2(-x, -y); +} + +inline Vector2 Vector2::operator+(const Vector2& rhs) const { + return Vector2(x+rhs.x, y+rhs.y); +} + +inline Vector2 Vector2::operator-(const Vector2& rhs) const { + return Vector2(x-rhs.x, y-rhs.y); +} + +inline Vector2& Vector2::operator+=(const Vector2& rhs) { + x += rhs.x; y += rhs.y; return *this; +} + +inline Vector2& Vector2::operator-=(const Vector2& rhs) { + x -= rhs.x; y -= rhs.y; return *this; +} + +inline Vector2 Vector2::operator*(const float a) const { + return Vector2(x*a, y*a); +} + +inline Vector2 Vector2::operator*(const Vector2& rhs) const { + return Vector2(x*rhs.x, y*rhs.y); +} + +inline Vector2& Vector2::operator*=(const float a) { + x *= a; y *= a; return *this; +} + +inline Vector2& Vector2::operator*=(const Vector2& rhs) { + x *= rhs.x; y *= rhs.y; return *this; +} + +inline Vector2 Vector2::operator/(const float a) const { + return Vector2(x/a, y/a); +} + +inline Vector2& Vector2::operator/=(const float a) { + x /= a; y /= a; return *this; +} + +inline bool Vector2::operator==(const Vector2& rhs) const { + return (x == rhs.x) && (y == rhs.y); +} + +inline bool Vector2::operator!=(const Vector2& rhs) const { + return (x != rhs.x) || (y != rhs.y); +} + +inline bool Vector2::operator<(const Vector2& rhs) const { + if(x < rhs.x) return true; + if(x > rhs.x) return false; + if(y < rhs.y) return true; + if(y > rhs.y) return false; + return false; +} + +inline float Vector2::operator[](int index) const { + return (&x)[index]; +} + +inline float& Vector2::operator[](int index) { + return (&x)[index]; +} + +inline void Vector2::set(float x, float y) { + this->x = x; this->y = y; +} + +inline float Vector2::length() const { + return sqrtf(x*x + y*y); +} + +inline float Vector2::distance(const Vector2& vec) const { + return sqrtf((vec.x-x)*(vec.x-x) + (vec.y-y)*(vec.y-y)); +} + +inline Vector2& Vector2::normalize() { + //@@const float EPSILON = 0.000001f; + float xxyy = x*x + y*y; + //@@if(xxyy < EPSILON) + //@@ return *this; + + //float invLength = invSqrt(xxyy); + float invLength = 1.0f / sqrtf(xxyy); + x *= invLength; + y *= invLength; + return *this; +} + +inline float Vector2::dot(const Vector2& rhs) const { + return (x*rhs.x + y*rhs.y); +} + +inline bool Vector2::equal(const Vector2& rhs, float epsilon) const { + return fabs(x - rhs.x) < epsilon && fabs(y - rhs.y) < epsilon; +} + +inline bool Vector2::inside(const Vector2& pos, const Vector2& size) const { + return (x >= pos.x and y >= pos.y and x <= (pos.x+size.x) and y <= (pos.y+size.y)); +} + +inline Vector2 operator*(const float a, const Vector2 vec) { + return Vector2(a*vec.x, a*vec.y); +} + +inline std::ostream& operator<<(std::ostream& os, const Vector2& vec) { + os << "(" << vec.x << ", " << vec.y << ")"; + return os; +} +// END OF VECTOR2 ///////////////////////////////////////////////////////////// + + + + +/////////////////////////////////////////////////////////////////////////////// +// inline functions for Vector3 +/////////////////////////////////////////////////////////////////////////////// +inline Vector3 Vector3::operator-() const { + return Vector3(-x, -y, -z); +} + +inline Vector3 Vector3::operator+(const Vector3& rhs) const { + return Vector3(x+rhs.x, y+rhs.y, z+rhs.z); +} + +inline Vector3 Vector3::operator-(const Vector3& rhs) const { + return Vector3(x-rhs.x, y-rhs.y, z-rhs.z); +} + +inline Vector3& Vector3::operator+=(const Vector3& rhs) { + x += rhs.x; y += rhs.y; z += rhs.z; return *this; +} + +inline Vector3& Vector3::operator-=(const Vector3& rhs) { + x -= rhs.x; y -= rhs.y; z -= rhs.z; return *this; +} + +inline Vector3 Vector3::operator*(const float a) const { + return Vector3(x*a, y*a, z*a); +} + +inline Vector3 Vector3::operator*(const Vector3& rhs) const { + return Vector3(x*rhs.x, y*rhs.y, z*rhs.z); +} + +inline Vector3& Vector3::operator*=(const float a) { + x *= a; y *= a; z *= a; return *this; +} + +inline Vector3& Vector3::operator*=(const Vector3& rhs) { + x *= rhs.x; y *= rhs.y; z *= rhs.z; return *this; +} + +inline Vector3 Vector3::operator/(const float a) const { + return Vector3(x/a, y/a, z/a); +} + +inline Vector3& Vector3::operator/=(const float a) { + x /= a; y /= a; z /= a; return *this; +} + +inline bool Vector3::operator==(const Vector3& rhs) const { + return (x == rhs.x) && (y == rhs.y) && (z == rhs.z); +} + +inline bool Vector3::operator!=(const Vector3& rhs) const { + return (x != rhs.x) || (y != rhs.y) || (z != rhs.z); +} + +inline bool Vector3::operator<(const Vector3& rhs) const { + if(x < rhs.x) return true; + if(x > rhs.x) return false; + if(y < rhs.y) return true; + if(y > rhs.y) return false; + if(z < rhs.z) return true; + if(z > rhs.z) return false; + return false; +} + +inline float Vector3::operator[](int index) const { + return (&x)[index]; +} + +inline float& Vector3::operator[](int index) { + return (&x)[index]; +} + +inline void Vector3::set(float x, float y, float z) { + this->x = x; this->y = y; this->z = z; +} + +inline float Vector3::length() const { + return sqrtf(x*x + y*y + z*z); +} + +inline float Vector3::distance(const Vector3& vec) const { + return sqrtf((vec.x-x)*(vec.x-x) + (vec.y-y)*(vec.y-y) + (vec.z-z)*(vec.z-z)); +} + +inline Vector3& Vector3::normalize() { + //@@const float EPSILON = 0.000001f; + float xxyyzz = x*x + y*y + z*z; + //@@if(xxyyzz < EPSILON) + //@@ return *this; // do nothing if it is ~zero vector + + //float invLength = invSqrt(xxyyzz); + float invLength = 1.0f / sqrtf(xxyyzz); + x *= invLength; + y *= invLength; + z *= invLength; + return *this; +} + +inline float Vector3::dot(const Vector3& rhs) const { + return (x*rhs.x + y*rhs.y + z*rhs.z); +} + +inline Vector3 Vector3::cross(const Vector3& rhs) const { + return Vector3(y*rhs.z - z*rhs.y, z*rhs.x - x*rhs.z, x*rhs.y - y*rhs.x); +} + +inline bool Vector3::equal(const Vector3& rhs, float epsilon) const { + return fabs(x - rhs.x) < epsilon && fabs(y - rhs.y) < epsilon && fabs(z - rhs.z) < epsilon; +} + +inline Vector3 operator*(const float a, const Vector3 vec) { + return Vector3(a*vec.x, a*vec.y, a*vec.z); +} + +inline std::ostream& operator<<(std::ostream& os, const Vector3& vec) { + os << "(" << vec.x << ", " << vec.y << ", " << vec.z << ")"; + return os; +} +// END OF VECTOR3 ///////////////////////////////////////////////////////////// + + + +/////////////////////////////////////////////////////////////////////////////// +// inline functions for Vector4 +/////////////////////////////////////////////////////////////////////////////// +inline Vector4 Vector4::operator-() const { + return Vector4(-x, -y, -z, -w); +} + +inline Vector4 Vector4::operator+(const Vector4& rhs) const { + return Vector4(x+rhs.x, y+rhs.y, z+rhs.z, w+rhs.w); +} + +inline Vector4 Vector4::operator-(const Vector4& rhs) const { + return Vector4(x-rhs.x, y-rhs.y, z-rhs.z, w-rhs.w); +} + +inline Vector4& Vector4::operator+=(const Vector4& rhs) { + x += rhs.x; y += rhs.y; z += rhs.z; w += rhs.w; return *this; +} + +inline Vector4& Vector4::operator-=(const Vector4& rhs) { + x -= rhs.x; y -= rhs.y; z -= rhs.z; w -= rhs.w; return *this; +} + +inline Vector4 Vector4::operator*(const float a) const { + return Vector4(x*a, y*a, z*a, w*a); +} + +inline Vector4 Vector4::operator*(const Vector4& rhs) const { + return Vector4(x*rhs.x, y*rhs.y, z*rhs.z, w*rhs.w); +} + +inline Vector4& Vector4::operator*=(const float a) { + x *= a; y *= a; z *= a; w *= a; return *this; +} + +inline Vector4& Vector4::operator*=(const Vector4& rhs) { + x *= rhs.x; y *= rhs.y; z *= rhs.z; w *= rhs.w; return *this; +} + +inline Vector4 Vector4::operator/(const float a) const { + return Vector4(x/a, y/a, z/a, w/a); +} + +inline Vector4& Vector4::operator/=(const float a) { + x /= a; y /= a; z /= a; w /= a; return *this; +} + +inline bool Vector4::operator==(const Vector4& rhs) const { + return (x == rhs.x) && (y == rhs.y) && (z == rhs.z) && (w == rhs.w); +} + +inline bool Vector4::operator!=(const Vector4& rhs) const { + return (x != rhs.x) || (y != rhs.y) || (z != rhs.z) || (w != rhs.w); +} + +inline bool Vector4::operator<(const Vector4& rhs) const { + if(x < rhs.x) return true; + if(x > rhs.x) return false; + if(y < rhs.y) return true; + if(y > rhs.y) return false; + if(z < rhs.z) return true; + if(z > rhs.z) return false; + if(w < rhs.w) return true; + if(w > rhs.w) return false; + return false; +} + +inline float Vector4::operator[](int index) const { + return (&x)[index]; +} + +inline float& Vector4::operator[](int index) { + return (&x)[index]; +} + +inline void Vector4::set(float x, float y, float z, float w) { + this->x = x; this->y = y; this->z = z; this->w = w; +} + +inline float Vector4::length() const { + return sqrtf(x*x + y*y + z*z + w*w); +} + +inline float Vector4::distance(const Vector4& vec) const { + return sqrtf((vec.x-x)*(vec.x-x) + (vec.y-y)*(vec.y-y) + (vec.z-z)*(vec.z-z) + (vec.w-w)*(vec.w-w)); +} + +inline Vector4& Vector4::normalize() { + //NOTE: leave w-component untouched + //@@const float EPSILON = 0.000001f; + float xxyyzz = x*x + y*y + z*z; + //@@if(xxyyzz < EPSILON) + //@@ return *this; // do nothing if it is zero vector + + //float invLength = invSqrt(xxyyzz); + float invLength = 1.0f / sqrtf(xxyyzz); + x *= invLength; + y *= invLength; + z *= invLength; + return *this; +} + +inline float Vector4::dot(const Vector4& rhs) const { + return (x*rhs.x + y*rhs.y + z*rhs.z + w*rhs.w); +} + +inline bool Vector4::equal(const Vector4& rhs, float epsilon) const { + return fabs(x - rhs.x) < epsilon && fabs(y - rhs.y) < epsilon && + fabs(z - rhs.z) < epsilon && fabs(w - rhs.w) < epsilon; +} + +inline Vector4 operator*(const float a, const Vector4 vec) { + return Vector4(a*vec.x, a*vec.y, a*vec.z, a*vec.w); +} + +inline std::ostream& operator<<(std::ostream& os, const Vector4& vec) { + os << "(" << vec.x << ", " << vec.y << ", " << vec.z << ", " << vec.w << ")"; + return os; +} +// END OF VECTOR4 ///////////////////////////////////////////////////////////// + +#endif diff --git a/application.cpp b/application.cpp new file mode 100644 index 0000000..4f675ad --- /dev/null +++ b/application.cpp @@ -0,0 +1,41 @@ +#include "application.h" + +//#include "model.h" +//#include "console.h" + +namespace Application +{ + bool quit {false}; + char dirty {1}; + + const bool& ShouldQuit() + { + return quit; + } + + void Quit() + { + //if (Model::IsModified()) { + // Console::Ask("SAVE BEFORE QUITTING (YES/NO/CANCEL)?", Application::QuitHandler); + //} else { + quit = true; + //} + } + + void QuitHandler(const char* reply) + { + //if (reply[0] == 'Y') { + // Model::Save(); + //} else if (reply[0] == 'N') { + // quit = true; + //} + } + + bool NeedsUpdate(const char cycles) + { + if (cycles > 0 and cycles > dirty) dirty = cycles; + return dirty > 0; + } + + void Updated() { if (dirty > 0) dirty--; } +} diff --git a/application.h b/application.h new file mode 100644 index 0000000..e7a3ab4 --- /dev/null +++ b/application.h @@ -0,0 +1,10 @@ +#pragma once + +namespace Application +{ + void Quit(); + const bool& ShouldQuit(); + void QuitHandler(const char* reply); + bool NeedsUpdate(const char cycles = 2); + void Updated(); +} diff --git a/common.h b/common.h new file mode 100644 index 0000000..ea6580c --- /dev/null +++ b/common.h @@ -0,0 +1,14 @@ +#pragma once + +#include +#include "Vectors.h" +#include "Matrices.h" +#include "geometry.h" + +#define QUERY 0 +#define ON 1 +#define OFF 2 +#define YES ON +#define NO OFF + +#define Swap(x, y) { x -= y = (x += y) - y; } \ No newline at end of file diff --git a/font.cpp b/font.cpp new file mode 100644 index 0000000..d21cc02 --- /dev/null +++ b/font.cpp @@ -0,0 +1,108 @@ +#include "font.h" +#include +#include +#include +#include +#include "texture.h" +#include "renderer.h" + +static float colors[16][4] = { + {0, 0, 0, 1}, + {0.5f, 0, 0, 1}, + {0, 0.5f, 0, 1}, + {0.5f, 0.5f, 0, 1}, + {0, 0, 0.5f, 1}, + {0.5f, 0, 0.5f, 1}, + {0, 0.5f, 0.5f, 1}, + {0.75f, 0.75f, 0.75f, 1}, + {0.5f, 0.5f, 0.5f, 1}, + {1, 0, 0, 1}, + {0, 1, 0, 1}, + {1, 1, 0, 1}, + {0, 0, 1, 1}, + {1, 0, 1, 1}, + {0, 1, 1, 1}, + {1, 1, 1, 1}, +}; + +void Font::Load(const char* filename) +{ + char name[16]; strcpy(name, filename); strcat(name, ".fnt"); + + FILE* fin = fopen(name, "ra"); + if (fin == NULL) return; + + char line[256]; + + fgets(line, 255, fin); + fgets(line, 255, fin); + int lh, sw, sh; + assert(sscanf(line, "common lineHeight=%i base=%*i scaleW=%i scaleH=%i", &lh, &sw, &sh) == 3); + lineHeight = lh; + bw = sw; + bh = sh; + + fgets(line, 255, fin); + fgets(line, 255, fin); + int numChars; + assert(sscanf(line, "chars count=%i", &numChars) == 1); + + for (int i = 0; i < numChars; i++) { + fgets(line, 255, fin); + int id, x, y, w, h, xo, yo, xa; + assert(sscanf(line, "char id=%i x=%i y=%i width=%i height=%i xoffset=%i yoffset=%i xadvance=%i", &id, &x, &y, &w, &h, &xo, &yo, &xa) == 8); + FontChar& c = chars[id-32]; + c.w = w; + c.h = h; + c.x1 = float(x)/float(bw); + c.y1 = float(y)/float(bh); + c.x2 = c.x1 + float(w)/float(bw); + c.y2 = c.y1 + float(h)/float(bh);; + c.xo = xo; + c.yo = yo; + c.xa = xa; + } + + texture = Texture::Create(); + Texture::Load(texture, filename); + fclose(fin); +} + +void Font::Print(int x, int y, const char* text, char color) +{ + const unsigned long len = strlen(text); + + Renderer::SetState(RENDER_FILL | RENDER_BLEND | RENDER_TEXTURE); + glBindTexture(GL_TEXTURE_2D, texture); + glBegin(GL_QUADS); + glColor4fv(colors[color]); + for (int i = 0; i < len; i++) { + FontChar& c = chars[text[i]-32]; + glTexCoord2f(c.x1, c.y1); + glVertex2i(x+c.xo, y+c.yo); + glTexCoord2f(c.x1, c.y2); + glVertex2i(x+c.xo, y+c.yo+c.h); + glTexCoord2f(c.x2, c.y2); + glVertex2i(x+c.xo+c.w, y+c.yo+c.h); + glTexCoord2f(c.x2, c.y1); + glVertex2i(x+c.xo+c.w, y+c.yo); + x += c.xa; + } + glEnd(); + +} + +Vector2 Font::GetSize(const char* text) +{ + Vector2 size; + size.y = lineHeight; + const unsigned long len = strlen(text); + for (int i = 0; i < len; i++) { + //if (i == len-1) { + // size.x += chars[text[i]-32].w; + //} else { + size.x += chars[text[i]-32].xa; + //} + } + return size; +} diff --git a/font.fnt b/font.fnt new file mode 100644 index 0000000..57867f3 --- /dev/null +++ b/font.fnt @@ -0,0 +1,99 @@ +info face="Segoe UI" size=14 bold=0 italic=0 charset="" unicode=0 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height=15 xoffset=1 yoffset=2 xadvance=4 page=0 chnl=0 letter="{" +char id=124 x=6 y=0 width=4 height=16 xoffset=1 yoffset=2 xadvance=3 page=0 chnl=0 letter="|" +char id=125 x=48 y=0 width=6 height=15 xoffset=0 yoffset=2 xadvance=4 page=0 chnl=0 letter="}" +char id=126 x=8 y=76 width=9 height=5 xoffset=1 yoffset=7 xadvance=10 page=0 chnl=0 letter="~" diff --git a/font.h b/font.h new file mode 100644 index 0000000..4ab3957 --- /dev/null +++ b/font.h @@ -0,0 +1,21 @@ +#pragma once + +#include "common.h" + +struct FontChar +{ + float x1, y1, x2, y2; + char w, h, xo, yo, xa; +}; + +struct Font +{ + char lineHeight; + unsigned char bw, bh; + FontChar chars[96]; + unsigned texture; + + void Load(const char* filename); + void Print(int x, int y, const char* text, char color = 15); + Vector2 GetSize(const char* text); +}; \ No newline at end of file diff --git a/font.png b/font.png new file mode 100644 index 0000000000000000000000000000000000000000..1556dbdd4a1cbd1b6c167d968f9614adc078f0f6 GIT 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zU0_RIlOA09Z_E;n3~6qY-i=3{V?}^68HOhR{}AK<`-2R*K01b!=JCmkIXeyZe*=gl NhL21iHtM*<{||ubU@HIs literal 0 HcmV?d00001 diff --git a/geometry.cpp b/geometry.cpp new file mode 100644 index 0000000..7b8c369 --- /dev/null +++ b/geometry.cpp @@ -0,0 +1,26 @@ +#include "geometry.h" + +Vector3 calculate_normal(const Vector3& v1, const Vector3& v2, const Vector3& v3) +{ + Vector3 normal; + const Vector3 U = v2 - v1; + const Vector3 V = v3 - v1; + + normal.x = U.y * V.z - U.z * V.y; + normal.y = U.z * V.x - U.x * V.z; + normal.z = U.x * V.y - U.y * V.x; + + return normal.normalize(); +} + +const float random(const float& rangeMin, const float& rangeMax) +{ + const float range = rangeMax - rangeMin; + return rangeMin + (float(rand())/float(RAND_MAX))*range; +} + +const float random_int(const int& rangeMin, const int& rangeMax) +{ + const int range = rangeMax - rangeMin; + return rangeMin + (rand() % range); +} diff --git a/geometry.h b/geometry.h new file mode 100644 index 0000000..22af219 --- /dev/null +++ b/geometry.h @@ -0,0 +1,85 @@ +#pragma once + +#include "Vectors.h" +#include +#include +#include + +#define MAX(x, y) x > y ? x : y +#define MIN(x, y) x < y ? x : y + +#define List std::list + +template +class Array +{ +public: + Array() : m_allocated(1000), m_dynamic(true) + { + m_values = (T*)malloc(sizeof(T)*m_allocated); + } + Array(int size, bool dynamic) : m_allocated(size), m_dynamic(dynamic) + { + m_values = (T*)malloc(sizeof(T)*m_allocated); + } + Array(const Array& other) : m_allocated(other.m_filled), m_dynamic(other.m_dynamic) + { + m_filled = other.m_filled; + m_allocated = other.m_filled; + m_values = (T*)malloc(sizeof(T)*m_allocated); + memcpy((T*)m_values, (T*)other.m_values, sizeof(T)*m_filled); + } + ~Array() { free(m_values); } + void Prealloc(int size) + { + m_allocated = size; + m_values = (T*)realloc(m_values, sizeof(T)*m_allocated); + } + const int push_back(const T& value) + { + if (m_filled >= m_allocated) { + if (not m_dynamic) {assert(false); } + if (m_allocated == 0) m_allocated = 1; else m_allocated*=2; + m_values = (T*)realloc(m_values, sizeof(T)*m_allocated); + } + m_values[m_filled++] = value; + + return m_filled-1; + } + void remove_simple(int index) + { + assert(index < m_filled); + m_filled--; + if (index != m_filled) m_values[index] = m_values[m_filled]; + } + const int exists(const T& value) const + { + for (int i = 0; i < m_filled; i++) if (m_values[i] == value) return i; + return -1; + } + void clear() { m_filled = 0; } + const unsigned size() const { return m_filled; } + const bool empty() const { return m_filled == 0; } + T operator[](int index) const { return m_values[index]; } + T& operator[](int index) { return m_values[index]; } + Array& operator=( const Array& other ) { + if (other.m_filled > m_allocated) { + m_values = (T*)realloc(m_values, sizeof(T)*other.m_filled); + } + m_allocated = other.m_filled; + m_filled = other.m_filled; + m_dynamic = other.m_dynamic; + memcpy(m_values, other.m_values, sizeof(T)*m_filled); + return *this; + } +private: + unsigned m_allocated{0}; + unsigned m_filled{0}; + bool m_dynamic{true}; + T* m_values{nullptr}; +}; + +Vector3 calculate_normal(const Vector3& v1, const Vector3& v2, const Vector3& v3); + +const float random(const float& rangeMin, const float& rangeMax); +const float random_int(const int& rangeMin, const int& rangeMax); diff --git a/grid.cpp b/grid.cpp new file mode 100644 index 0000000..4c39db5 --- /dev/null +++ b/grid.cpp @@ -0,0 +1,77 @@ +#include "grid.h" +#include + +//#include "viewport.h" +#include "renderer.h" + +namespace Grid +{ + bool visible = true; + + void Toggle() + { + visible = not visible; + } + + void Draw(const char viewport, int size) + { + if (not visible) return; + + int planeOffset = 0; + char axis = 1; //AXIS_Y; +/* Viewport::Viewport v = Viewport::GetViewport(viewport); + if (v.perspective == Viewport::Perspective::Ortho) { + if (v.yaw == 0 and v.pitch == 90) { + planeOffset = 999; + axis = AXIS_Y; + } else if (v.yaw == 0 and v.pitch == -90) { + planeOffset = -999; + axis = AXIS_Y; + } else if (v.yaw == 90 and v.pitch == 0) { + planeOffset = -999; + axis = AXIS_X; + } else if (v.yaw == -90 and v.pitch == 0) { + planeOffset = 999; + axis = AXIS_X; + } else if (v.yaw == 0 and v.pitch == 0) { + planeOffset = 999; + axis = AXIS_Z; + } else if (v.yaw == 180 and v.pitch == 0) { + planeOffset = -999; + axis = AXIS_Z; + } + } +*/ + const char axis_x = 0; //axis == AXIS_Z ? AXIS_X : axis == AXIS_X ? AXIS_Z : AXIS_X; + const char axis_y = 1; //axis == AXIS_Z ? AXIS_Y : axis == AXIS_X ? AXIS_Y : AXIS_Z; + + + Renderer::Push(); + Renderer::Light(OFF); + Renderer::Depth(OFF); + if (size == 0) size = planeOffset == 0 ? 20 : 30; + glBegin(GL_LINES); + for (int i = -size; i <= size; i++) { + if (i == 0) { + glColor4f(0.5f, 0.5f, 0.5f, 1); + } else { + glColor4f(0.25f, 0.25f, 0.25f, 1); + } + char pos[2][3] {{0,0,0}, {0,0,0}}; + pos[0][axis_x] = -size; + pos[1][axis_x] = size; + pos[0][axis_y] = pos[1][axis_y] = i; + pos[0][axis] = pos[1][axis] = planeOffset; + glVertex3f(pos[0][0], pos[0][1], pos[0][2]); + glVertex3f(pos[1][0], pos[1][1], pos[1][2]); + pos[0][axis_y] = -size; + pos[1][axis_y] = size; + pos[0][axis_x] = pos[1][axis_x] = i; + pos[0][axis] = pos[1][axis] = planeOffset; + glVertex3f(pos[0][0], pos[0][1], pos[0][2]); + glVertex3f(pos[1][0], pos[1][1], pos[1][2]); + } + glEnd(); + Renderer::Pop(); + } +} diff --git a/grid.h b/grid.h new file mode 100644 index 0000000..ac4db9c --- /dev/null +++ b/grid.h @@ -0,0 +1,7 @@ +#pragma once + +namespace Grid +{ + void Toggle(); + void Draw(const char viewport, int size = 0); +} diff --git a/lagueirtofile b/lagueirtofile new file mode 100644 index 0000000..eea0c0b --- /dev/null +++ b/lagueirtofile @@ -0,0 +1,5 @@ +libs = -lSDL2 -lGL +cppflags = -D DEBUG -g +executable = biomed_debug +sourcepath = . +buildpath = build diff --git a/main.cpp b/main.cpp new file mode 100644 index 0000000..0908fc0 --- /dev/null +++ b/main.cpp @@ -0,0 +1,156 @@ +#include "screen.h" +#include + +#include "application.h" +//#include "console.h" +//#include "interpreter.h" +//#include "worker.h" +//#include "layout.h" +//#include "texture.h" +//#include "turtle.h" +//#include "keystrokes.h" +#include "GUI.h" +#include "GUIMouse.h" +#include "GUIKeyboard.h" +#include "font.h" +#include "GUIViewport.h" +#include "Editor.h" +#include "texture.h" + +int main(int argc, const char* argv[]) +{ + // SDL INIT + + if (SDL_Init(SDL_INIT_EVERYTHING) != 0) { puts("SDL_Init error"); return -1; } + + SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 2); + SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 1); + + SDL_Window* gWindow = SDL_CreateWindow("BiomED", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, SCREEN_WIDTH, SCREEN_HEIGHT, SDL_WINDOW_OPENGL | SDL_WINDOW_SHOWN | SDL_WINDOW_RESIZABLE); + if (gWindow == NULL) { puts("SDL_CreateWindow error"); return -1; } + + SDL_GLContext gContext = SDL_GL_CreateContext(gWindow); + if (gContext == NULL) { puts("SDL_GL_CreateContext error"); return -1; } + + if (SDL_GL_SetSwapInterval(1) < 0) { puts("WARNING: no vsync!"); } + + + // OPENGL INIT + + glClearColor(0.12f, 0.12f, 0.12f, 1.0f); + glDisable(GL_DEPTH_TEST); + glClearDepth(1.0f); + glDepthFunc(GL_LEQUAL); + glBlendFunc( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA ); + glEnable(GL_NORMALIZE); + glEnable(GL_CULL_FACE); + + glColorMaterial(GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE); + glEnable(GL_LIGHT0); + //static const GLfloat LightPosition[]= {0.408248f, 0.408248f, -0.816497f, 0.0f};//{ 0.5f, 0.5f, 1.0f, 0.0f }; // 5 4 2 0 + static const GLfloat LightPosition[]= {0, 0, -1.0f, 0.0f};//{ 0.5f, 0.5f, 1.0f, 0.0f }; // 5 4 2 0 + static const GLfloat LightAmbient[]= { 0.2f, 0.2f, 0.2f, 1.0f }; + static const GLfloat LightDiffuse[]= { 1.0f, 1.0f, 1.0f, 1.0f }; + glLightfv(GL_LIGHT0, GL_AMBIENT, LightAmbient); + glLightfv(GL_LIGHT0, GL_DIFFUSE, LightDiffuse); + glLightfv(GL_LIGHT0, GL_POSITION, LightPosition); + + + // SUBSYSTEMS INIT + + //Console::Init(); + //Worker::RegisterCommands(); + //Layout::Load("_last", SILENT); + //Texture::texture = Texture::Create(); + //Turtle::Clear(); + + Editor::texture = Texture::Create(32, 32); + for (int i = 0; i < 32*32*4; i++) Editor::bitmap[i] = 255; + Texture::Update(Editor::texture, 32, 32, Editor::bitmap); + + Font* f = new Font(); + f->Load("font"); + + viewports[1].rotation = {0,0}; + + // MAIN LOOP + + SDL_Event e; + while (not Application::ShouldQuit()) { + + // SDL EVENTS + + while (SDL_PollEvent(&e) != 0) { + if (e.type == SDL_QUIT) { + Application::Quit(); + } else if (e.type == SDL_WINDOWEVENT) { + if (e.window.event == SDL_WINDOWEVENT_RESIZED) { + SCREEN_WIDTH = e.window.data1; + SCREEN_HEIGHT = e.window.data2; + //GUIElement::root->SetSize(Vector2(e.window.data1, e.window.data2)); + //} else if (e.window.event == SDL_WINDOWEVENT_FOCUS_GAINED) { + // GUIState::NeedsRedraw(); + } + } else if (e.type == SDL_MOUSEMOTION) { + GUIMouse::ReceiveMouseMoveEvent(e.motion.x, e.motion.y); + } else if (e.type == SDL_MOUSEBUTTONDOWN) { + GUIMouse::Button b = e.button.button == 1 ? GUIMouse::Button::Left : e.button.button == 2 ? GUIMouse::Button::Middle : GUIMouse::Button::Right; + GUIMouse::ReceiveMouseDownEvent(b); + } else if (e.type == SDL_MOUSEBUTTONUP) { + GUIMouse::Button b = e.button.button == 1 ? GUIMouse::Button::Left : e.button.button == 2 ? GUIMouse::Button::Middle : GUIMouse::Button::Right; + GUIMouse::ReceiveMouseUpEvent(b); + } else if (e.type == SDL_KEYDOWN) { + GUIKeyboard::ReceiveKeyboardEvent(e.key.keysym.sym); + } else if (e.type == SDL_KEYUP) { + GUIKeyboard::ReceiveKeyboardEvent(SDLK_UNKNOWN); + } else if (e.type == SDL_MOUSEWHEEL) { + GUIMouse::ReceiveMouseWheelEvent(e.wheel.x, e.wheel.y); + } else if (e.type == SDL_MULTIGESTURE) { + printf("GESTURE: %.2f, %.2f, %i\n", e.mgesture.dTheta*100, e.mgesture.dDist*100, e.mgesture.numFingers); + GUIMouse::ReceiveMultigestureEvent(e.mgesture.dTheta, e.mgesture.dDist, e.mgesture.numFingers); + } + /*if (Console::Enable(QUERY)) { + if (e.type == SDL_TEXTINPUT) { + Console::PutChar(toupper(e.text.text[0])); + //printf("%c",e.text.text[0]); + } else if (e.type == SDL_KEYDOWN) { + if (e.key.keysym.sym == SDLK_RETURN) { + char command[80]; + Console::Enter(command); + Worker::ExecuteCommand(Interpreter::Do(command)); + } else if (e.key.keysym.sym == SDLK_BACKSPACE) { + Console::DelChar(); + } else if (e.key.keysym.sym == SDLK_UP) { + Console::PrevComm(); + } else if (e.key.keysym.sym == SDLK_DOWN) { + Console::NextComm(); + } + } + } else { + if (e.type == SDL_KEYDOWN) { + Keystrokes::KeyPressed(e.key.keysym.sym); + } + }*/ + } + + + // DRAW + + if (Application::NeedsUpdate(0)) { + glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); + //GUIState::Update(); + GUI::Draw(); + //Layout::Draw(); + //Console::Draw(); + + SDL_GL_SwapWindow(gWindow); + glClearColor(0.12f, 0.12f, 0.12f, 1.0f); + Application::Updated(); + GUIMouse::Reset(); + GUIKeyboard::Reset(); + } + } + + //Layout::Save("_last"); +} + diff --git a/renderer.cpp b/renderer.cpp new file mode 100644 index 0000000..2bd9596 --- /dev/null +++ b/renderer.cpp @@ -0,0 +1,171 @@ +#include "renderer.h" + +#include + +namespace Renderer +{ + State currentState {RENDER_DEPTH}; + State stackedStates[10]; + char stackPos {0}; + + void DoLightOn(); + void DoLightOff(); + void DoFillOn(); + void DoFillOff(); + void DoDepthOn(); + void DoDepthOff(); + void DoBlendOn(); + void DoBlendOff(); + void DoTextureOn(); + void DoTextureOff(); + + bool Light(const char state) + { + if (state == ON) { + DoLightOn(); + } else if (state == OFF) { + DoLightOff(); + } + return (currentState & RENDER_LIGHT) == RENDER_LIGHT; + } + + bool Fill(const char state) + { + if (state == ON) { + DoFillOn(); + } else if (state == OFF) { + DoFillOff(); + } + return (currentState & RENDER_FILL) == RENDER_FILL; + } + + bool Depth(const char state) + { + if (state == ON) { + DoDepthOn(); + } else if (state == OFF) { + DoDepthOff(); + } + return (currentState & RENDER_DEPTH) == RENDER_DEPTH; + } + + bool Blend(const char state) + { + if (state == ON) { + DoBlendOn(); + } else if (state == OFF) { + DoBlendOff(); + } + return (currentState & RENDER_BLEND) == RENDER_BLEND; + } + + bool Texture(const char state) + { + if (state == ON) { + DoTextureOn(); + } else if (state == OFF) { + DoTextureOff(); + } + return (currentState & RENDER_TEXTURE) == RENDER_TEXTURE; + } + + void Push() + { + if (stackPos == 10) return; + stackedStates[stackPos++] = currentState; + } + + void Pop() + { + if (stackPos == 0) return; + SetState(stackedStates[--stackPos]); + } + + void SetState(const State& state) + { + if ((state & RENDER_LIGHT) == RENDER_LIGHT) DoLightOn(); else DoLightOff(); + if ((state & RENDER_FILL) == RENDER_FILL) DoFillOn(); else DoFillOff(); + if ((state & RENDER_BLEND) == RENDER_BLEND) DoBlendOn(); else DoBlendOff(); + if ((state & RENDER_DEPTH) == RENDER_DEPTH) DoDepthOn(); else DoDepthOff(); + if ((state & RENDER_TEXTURE) == RENDER_TEXTURE) DoTextureOn(); else DoTextureOff(); + } + + State GetState() + { + return currentState; + } + + + void DoLightOn() + { + if ((currentState & RENDER_LIGHT) == RENDER_LIGHT) return; + glEnable(GL_LIGHTING); + glEnable(GL_COLOR_MATERIAL); + currentState |= RENDER_LIGHT; + } + + void DoLightOff() + { + if ((currentState & RENDER_LIGHT) != RENDER_LIGHT) return; + glDisable(GL_LIGHTING); + glDisable(GL_COLOR_MATERIAL); + currentState &= uint8_t(~RENDER_LIGHT); + } + + void DoFillOn() + { + if ((currentState & RENDER_FILL) == RENDER_FILL) return; + glPolygonMode(GL_FRONT_AND_BACK, GL_FILL); + currentState |= RENDER_FILL; + } + + void DoFillOff() + { + if ((currentState & RENDER_FILL) != RENDER_FILL) return; + glPolygonMode(GL_FRONT_AND_BACK, GL_LINE); + currentState &= uint8_t(~RENDER_FILL); + } + + void DoDepthOn() + { + if ((currentState & RENDER_DEPTH) == RENDER_DEPTH) return; + glEnable(GL_DEPTH_TEST); + currentState |= RENDER_DEPTH; + } + + void DoDepthOff() + { + if ((currentState & RENDER_DEPTH) != RENDER_DEPTH) return; + glDisable(GL_DEPTH_TEST); + currentState &= uint8_t(~RENDER_DEPTH); + } + + void DoBlendOn() + { + if ((currentState & RENDER_BLEND) == RENDER_BLEND) return; + glEnable(GL_BLEND); + currentState |= RENDER_BLEND; + } + + void DoBlendOff() + { + if ((currentState & RENDER_BLEND) != RENDER_BLEND) return; + glDisable(GL_BLEND); + currentState &= uint8_t(~RENDER_BLEND); + } + + void DoTextureOn() + { + if ((currentState & RENDER_TEXTURE) == RENDER_TEXTURE) return; + glEnable(GL_TEXTURE_2D); + currentState |= RENDER_TEXTURE; + } + + void DoTextureOff() + { + if ((currentState & RENDER_TEXTURE) != RENDER_TEXTURE) return; + glDisable(GL_TEXTURE_2D); + currentState &= uint8_t(~RENDER_TEXTURE); + } + +} diff --git a/renderer.h b/renderer.h new file mode 100644 index 0000000..6b99613 --- /dev/null +++ b/renderer.h @@ -0,0 +1,26 @@ +#pragma once + +#include "common.h" + +#define RENDER_NONE 0 +#define RENDER_LIGHT 1 +#define RENDER_FILL 2 +#define RENDER_DEPTH 4 +#define RENDER_BLEND 8 +#define RENDER_TEXTURE 16 + +namespace Renderer +{ + typedef unsigned char State; + + bool Light(const char state = QUERY); + bool Fill(const char state = QUERY); + bool Depth(const char state = QUERY); + bool Blend(const char state = QUERY); + bool Texture(const char state = QUERY); + + void Push(); + void Pop(); + void SetState(const State& state); + State GetState(); +} diff --git a/screen.cpp b/screen.cpp new file mode 100644 index 0000000..4637477 --- /dev/null +++ b/screen.cpp @@ -0,0 +1,17 @@ +#include "screen.h" + +#include +#include "application.h" + +float SCREEN_WIDTH = 1280; +float SCREEN_HEIGHT = 700; + +namespace Screen +{ + SDL_Window* gWindow = nullptr; + + void Beep(unsigned char r, unsigned char g, unsigned char b){ + glClearColor(float(r)/255.0f, float(g)/255.0f, float(b)/255.0f, 1.0f); + Application::NeedsUpdate(2); + } +} diff --git a/screen.h b/screen.h new file mode 100644 index 0000000..40528df --- /dev/null +++ b/screen.h @@ -0,0 +1,12 @@ +#pragma once + +#include + +extern float SCREEN_WIDTH; +extern float SCREEN_HEIGHT; + +namespace Screen +{ + extern SDL_Window* gWindow; + void Beep(unsigned char r = 255, unsigned char g = 255, unsigned char b = 255); +} diff --git a/stb_image.h b/stb_image.h new file mode 100644 index 0000000..83748e4 --- /dev/null +++ b/stb_image.h @@ -0,0 +1,4687 @@ +/* stb_image - v1.46 - public domain JPEG/PNG reader - http://nothings.org/stb_image.c + when you control the images you're loading + no warranty implied; use at your own risk + + Do this: + #define STB_IMAGE_IMPLEMENTATION + before you include this file in *one* C or C++ file to create the implementation. + + #define STBI_ASSERT(x) to avoid using assert.h. + + QUICK NOTES: + Primarily of interest to game developers and other people who can + avoid problematic images and only need the trivial interface + + JPEG baseline (no JPEG progressive) + PNG 8-bit-per-channel only + + TGA (not sure what subset, if a subset) + BMP non-1bpp, non-RLE + PSD (composited view only, no extra channels) + + GIF (*comp always reports as 4-channel) + HDR (radiance rgbE format) + PIC (Softimage PIC) + + - decode from memory or through FILE (define STBI_NO_STDIO to remove code) + - decode from arbitrary I/O callbacks + - overridable dequantizing-IDCT, YCbCr-to-RGB conversion (define STBI_SIMD) + + Latest revisions: + 1.46 (2014-08-26) fix broken tRNS chunk in non-paletted PNG + 1.45 (2014-08-16) workaround MSVC-ARM internal compiler error by wrapping malloc + 1.44 (2014-08-07) warnings + 1.43 (2014-07-15) fix MSVC-only bug in 1.42 + 1.42 (2014-07-09) no _CRT_SECURE_NO_WARNINGS; error-path fixes; STBI_ASSERT + 1.41 (2014-06-25) fix search&replace that messed up comments/error messages + 1.40 (2014-06-22) gcc warning + 1.39 (2014-06-15) TGA optimization bugfix, multiple BMP fixes + 1.38 (2014-06-06) suppress MSVC run-time warnings, fix accidental rename of 'skip' + 1.37 (2014-06-04) remove duplicate typedef + 1.36 (2014-06-03) converted to header file, allow reading incorrect iphoned-images without iphone flag + 1.35 (2014-05-27) warnings, bugfixes, TGA optimization, etc + + See end of file for full revision history. + + TODO: + stbi_info support for BMP,PSD,HDR,PIC + + + ============================ Contributors ========================= + + Image formats Bug fixes & warning fixes + Sean Barrett (jpeg, png, bmp) Marc LeBlanc + Nicolas Schulz (hdr, psd) Christpher Lloyd + Jonathan Dummer (tga) Dave Moore + Jean-Marc Lienher (gif) Won Chun + Tom Seddon (pic) the Horde3D community + Thatcher Ulrich (psd) Janez Zemva + Jonathan Blow + Laurent Gomila + Extensions, features Aruelien Pocheville + Jetro Lauha (stbi_info) Ryamond Barbiero + James "moose2000" Brown (iPhone PNG) David Woo + Ben "Disch" Wenger (io callbacks) Roy Eltham + Martin "SpartanJ" Golini Luke Graham + Thomas Ruf + John Bartholomew + Optimizations & bugfixes Ken Hamada + Fabian "ryg" Giesen Cort Stratton + Arseny Kapoulkine Blazej Dariusz Roszkowski + Thibault Reuille + Paul Du Bois + Guillaume George + Jerry Jansson + If your name should be here but Hayaki Saito + isn't, let Sean know. Johan Duparc + Ronny Chevalier + Michal Cichon + */ + +#ifndef STBI_INCLUDE_STB_IMAGE_H +#define STBI_INCLUDE_STB_IMAGE_H + +// Limitations: +// - no jpeg progressive support +// - non-HDR formats support 8-bit samples only (jpeg, png) +// - no delayed line count (jpeg) -- IJG doesn't support either +// - no 1-bit BMP +// - GIF always returns *comp=4 +// +// Basic usage (see HDR discussion below): +// int x,y,n; +// unsigned char *data = stbi_load(filename, &x, &y, &n, 0); +// // ... process data if not NULL ... +// // ... x = width, y = height, n = # 8-bit components per pixel ... +// // ... replace '0' with '1'..'4' to force that many components per pixel +// // ... but 'n' will always be the number that it would have been if you said 0 +// stbi_image_free(data) +// +// Standard parameters: +// int *x -- outputs image width in pixels +// int *y -- outputs image height in pixels +// int *comp -- outputs # of image components in image file +// int req_comp -- if non-zero, # of image components requested in result +// +// The return value from an image loader is an 'unsigned char *' which points +// to the pixel data. The pixel data consists of *y scanlines of *x pixels, +// with each pixel consisting of N interleaved 8-bit components; the first +// pixel pointed to is top-left-most in the image. There is no padding between +// image scanlines or between pixels, regardless of format. The number of +// components N is 'req_comp' if req_comp is non-zero, or *comp otherwise. +// If req_comp is non-zero, *comp has the number of components that _would_ +// have been output otherwise. E.g. if you set req_comp to 4, you will always +// get RGBA output, but you can check *comp to easily see if it's opaque. +// +// An output image with N components has the following components interleaved +// in this order in each pixel: +// +// N=#comp components +// 1 grey +// 2 grey, alpha +// 3 red, green, blue +// 4 red, green, blue, alpha +// +// If image loading fails for any reason, the return value will be NULL, +// and *x, *y, *comp will be unchanged. The function stbi_failure_reason() +// can be queried for an extremely brief, end-user unfriendly explanation +// of why the load failed. Define STBI_NO_FAILURE_STRINGS to avoid +// compiling these strings at all, and STBI_FAILURE_USERMSG to get slightly +// more user-friendly ones. +// +// Paletted PNG, BMP, GIF, and PIC images are automatically depalettized. +// +// =========================================================================== +// +// iPhone PNG support: +// +// By default we convert iphone-formatted PNGs back to RGB; nominally they +// would silently load as BGR, except the existing code should have just +// failed on such iPhone PNGs. But you can disable this conversion by +// by calling stbi_convert_iphone_png_to_rgb(0), in which case +// you will always just get the native iphone "format" through. +// +// Call stbi_set_unpremultiply_on_load(1) as well to force a divide per +// pixel to remove any premultiplied alpha *only* if the image file explicitly +// says there's premultiplied data (currently only happens in iPhone images, +// and only if iPhone convert-to-rgb processing is on). +// +// =========================================================================== +// +// HDR image support (disable by defining STBI_NO_HDR) +// +// stb_image now supports loading HDR images in general, and currently +// the Radiance .HDR file format, although the support is provided +// generically. You can still load any file through the existing interface; +// if you attempt to load an HDR file, it will be automatically remapped to +// LDR, assuming gamma 2.2 and an arbitrary scale factor defaulting to 1; +// both of these constants can be reconfigured through this interface: +// +// stbi_hdr_to_ldr_gamma(2.2f); +// stbi_hdr_to_ldr_scale(1.0f); +// +// (note, do not use _inverse_ constants; stbi_image will invert them +// appropriately). +// +// Additionally, there is a new, parallel interface for loading files as +// (linear) floats to preserve the full dynamic range: +// +// float *data = stbi_loadf(filename, &x, &y, &n, 0); +// +// If you load LDR images through this interface, those images will +// be promoted to floating point values, run through the inverse of +// constants corresponding to the above: +// +// stbi_ldr_to_hdr_scale(1.0f); +// stbi_ldr_to_hdr_gamma(2.2f); +// +// Finally, given a filename (or an open file or memory block--see header +// file for details) containing image data, you can query for the "most +// appropriate" interface to use (that is, whether the image is HDR or +// not), using: +// +// stbi_is_hdr(char *filename); +// +// =========================================================================== +// +// I/O callbacks +// +// I/O callbacks allow you to read from arbitrary sources, like packaged +// files or some other source. Data read from callbacks are processed +// through a small internal buffer (currently 128 bytes) to try to reduce +// overhead. +// +// The three functions you must define are "read" (reads some bytes of data), +// "skip" (skips some bytes of data), "eof" (reports if the stream is at the end). + + +#ifndef STBI_NO_STDIO +#include +#endif // STBI_NO_STDIO + +#define STBI_VERSION 1 + +enum +{ + STBI_default = 0, // only used for req_comp + + STBI_grey = 1, + STBI_grey_alpha = 2, + STBI_rgb = 3, + STBI_rgb_alpha = 4 +}; + +typedef unsigned char stbi_uc; + +#ifdef __cplusplus +extern "C" { +#endif + +#ifdef STB_IMAGE_STATIC +#define STBIDEF static +#else +#define STBIDEF extern +#endif + + ////////////////////////////////////////////////////////////////////////////// + // + // PRIMARY API - works on images of any type + // + + // + // load image by filename, open file, or memory buffer + // + + STBIDEF stbi_uc *stbi_load_from_memory(stbi_uc const *buffer, int len, int *x, int *y, int *comp, int req_comp); + +#ifndef STBI_NO_STDIO + STBIDEF stbi_uc *stbi_load (char const *filename, int *x, int *y, int *comp, int req_comp); + STBIDEF stbi_uc *stbi_load_from_file (FILE *f, int *x, int *y, int *comp, int req_comp); + // for stbi_load_from_file, file pointer is left pointing immediately after image +#endif + + typedef struct + { + int (*read) (void *user,char *data,int size); // fill 'data' with 'size' bytes. return number of bytes actually read + void (*skip) (void *user,int n); // skip the next 'n' bytes, or 'unget' the last -n bytes if negative + int (*eof) (void *user); // returns nonzero if we are at end of file/data + } stbi_io_callbacks; + + STBIDEF stbi_uc *stbi_load_from_callbacks (stbi_io_callbacks const *clbk, void *user, int *x, int *y, int *comp, int req_comp); + +#ifndef STBI_NO_HDR + STBIDEF float *stbi_loadf_from_memory(stbi_uc const *buffer, int len, int *x, int *y, int *comp, int req_comp); + +#ifndef STBI_NO_STDIO + STBIDEF float *stbi_loadf (char const *filename, int *x, int *y, int *comp, int req_comp); + STBIDEF float *stbi_loadf_from_file (FILE *f, int *x, int *y, int *comp, int req_comp); +#endif + + STBIDEF float *stbi_loadf_from_callbacks (stbi_io_callbacks const *clbk, void *user, int *x, int *y, int *comp, int req_comp); + + STBIDEF void stbi_hdr_to_ldr_gamma(float gamma); + STBIDEF void stbi_hdr_to_ldr_scale(float scale); + + STBIDEF void stbi_ldr_to_hdr_gamma(float gamma); + STBIDEF void stbi_ldr_to_hdr_scale(float scale); +#endif // STBI_NO_HDR + + // stbi_is_hdr is always defined + STBIDEF int stbi_is_hdr_from_callbacks(stbi_io_callbacks const *clbk, void *user); + STBIDEF int stbi_is_hdr_from_memory(stbi_uc const *buffer, int len); +#ifndef STBI_NO_STDIO + STBIDEF int stbi_is_hdr (char const *filename); + STBIDEF int stbi_is_hdr_from_file(FILE *f); +#endif // STBI_NO_STDIO + + + // get a VERY brief reason for failure + // NOT THREADSAFE + STBIDEF const char *stbi_failure_reason (void); + + // free the loaded image -- this is just free() + STBIDEF void stbi_image_free (void *retval_from_stbi_load); + + // get image dimensions & components without fully decoding + STBIDEF int stbi_info_from_memory(stbi_uc const *buffer, int len, int *x, int *y, int *comp); + STBIDEF int stbi_info_from_callbacks(stbi_io_callbacks const *clbk, void *user, int *x, int *y, int *comp); + +#ifndef STBI_NO_STDIO + STBIDEF int stbi_info (char const *filename, int *x, int *y, int *comp); + STBIDEF int stbi_info_from_file (FILE *f, int *x, int *y, int *comp); + +#endif + + + + // for image formats that explicitly notate that they have premultiplied alpha, + // we just return the colors as stored in the file. set this flag to force + // unpremultiplication. results are undefined if the unpremultiply overflow. + STBIDEF void stbi_set_unpremultiply_on_load(int flag_true_if_should_unpremultiply); + + // indicate whether we should process iphone images back to canonical format, + // or just pass them through "as-is" + STBIDEF void stbi_convert_iphone_png_to_rgb(int flag_true_if_should_convert); + + + // ZLIB client - used by PNG, available for other purposes + + STBIDEF char *stbi_zlib_decode_malloc_guesssize(const char *buffer, int len, int initial_size, int *outlen); + STBIDEF char *stbi_zlib_decode_malloc_guesssize_headerflag(const char *buffer, int len, int initial_size, int *outlen, int parse_header); + STBIDEF char *stbi_zlib_decode_malloc(const char *buffer, int len, int *outlen); + STBIDEF int stbi_zlib_decode_buffer(char *obuffer, int olen, const char *ibuffer, int ilen); + + STBIDEF char *stbi_zlib_decode_noheader_malloc(const char *buffer, int len, int *outlen); + STBIDEF int stbi_zlib_decode_noheader_buffer(char *obuffer, int olen, const char *ibuffer, int ilen); + + + // define faster low-level operations (typically SIMD support) +#ifdef STBI_SIMD + typedef void (*stbi_idct_8x8)(stbi_uc *out, int out_stride, short data[64], unsigned short *dequantize); + // compute an integer IDCT on "input" + // input[x] = data[x] * dequantize[x] + // write results to 'out': 64 samples, each run of 8 spaced by 'out_stride' + // CLAMP results to 0..255 + typedef void (*stbi_YCbCr_to_RGB_run)(stbi_uc *output, stbi_uc const *y, stbi_uc const *cb, stbi_uc const *cr, int count, int step); + // compute a conversion from YCbCr to RGB + // 'count' pixels + // write pixels to 'output'; each pixel is 'step' bytes (either 3 or 4; if 4, write '255' as 4th), order R,G,B + // y: Y input channel + // cb: Cb input channel; scale/biased to be 0..255 + // cr: Cr input channel; scale/biased to be 0..255 + + STBIDEF void stbi_install_idct(stbi_idct_8x8 func); + STBIDEF void stbi_install_YCbCr_to_RGB(stbi_YCbCr_to_RGB_run func); +#endif // STBI_SIMD + + +#ifdef __cplusplus +} +#endif + +// +// +//// end header file ///////////////////////////////////////////////////// +#endif // STBI_INCLUDE_STB_IMAGE_H + +#ifdef STB_IMAGE_IMPLEMENTATION + +#ifndef STBI_NO_HDR +#include // ldexp +#include // strcmp, strtok +#endif + +#ifndef STBI_NO_STDIO +#include +#endif +#include +#include +#ifndef STBI_ASSERT +#include +#define STBI_ASSERT(x) assert(x) +#endif +#include +#include // ptrdiff_t on osx + +#ifndef _MSC_VER +#ifdef __cplusplus +#define stbi_inline inline +#else +#define stbi_inline +#endif +#else +#define stbi_inline __forceinline +#endif + + +#ifdef _MSC_VER +typedef unsigned short stbi__uint16; +typedef signed short stbi__int16; +typedef unsigned int stbi__uint32; +typedef signed int stbi__int32; +#else +#include +typedef uint16_t stbi__uint16; +typedef int16_t stbi__int16; +typedef uint32_t stbi__uint32; +typedef int32_t stbi__int32; +#endif + +// should produce compiler error if size is wrong +typedef unsigned char validate_uint32[sizeof(stbi__uint32)==4 ? 1 : -1]; + +#ifdef _MSC_VER +#define STBI_NOTUSED(v) (void)(v) +#else +#define STBI_NOTUSED(v) (void)sizeof(v) +#endif + +#ifdef _MSC_VER +#define STBI_HAS_LROTL +#endif + +#ifdef STBI_HAS_LROTL +#define stbi_lrot(x,y) _lrotl(x,y) +#else +#define stbi_lrot(x,y) (((x) << (y)) | ((x) >> (32 - (y)))) +#endif + +/////////////////////////////////////////////// +// +// stbi__context struct and start_xxx functions + +// stbi__context structure is our basic context used by all images, so it +// contains all the IO context, plus some basic image information +typedef struct +{ + stbi__uint32 img_x, img_y; + int img_n, img_out_n; + + stbi_io_callbacks io; + void *io_user_data; + + int read_from_callbacks; + int buflen; + stbi_uc buffer_start[128]; + + stbi_uc *img_buffer, *img_buffer_end; + stbi_uc *img_buffer_original; +} stbi__context; + + +static void stbi__refill_buffer(stbi__context *s); + +// initialize a memory-decode context +static void stbi__start_mem(stbi__context *s, stbi_uc const *buffer, int len) +{ + s->io.read = NULL; + s->read_from_callbacks = 0; + s->img_buffer = s->img_buffer_original = (stbi_uc *) buffer; + s->img_buffer_end = (stbi_uc *) buffer+len; +} + +// initialize a callback-based context +static void stbi__start_callbacks(stbi__context *s, stbi_io_callbacks *c, void *user) +{ + s->io = *c; + s->io_user_data = user; + s->buflen = sizeof(s->buffer_start); + s->read_from_callbacks = 1; + s->img_buffer_original = s->buffer_start; + stbi__refill_buffer(s); +} + +#ifndef STBI_NO_STDIO + +static int stbi__stdio_read(void *user, char *data, int size) +{ + return (int) fread(data,1,size,(FILE*) user); +} + +static void stbi__stdio_skip(void *user, int n) +{ + fseek((FILE*) user, n, SEEK_CUR); +} + +static int stbi__stdio_eof(void *user) +{ + return feof((FILE*) user); +} + +static stbi_io_callbacks stbi__stdio_callbacks = +{ + stbi__stdio_read, + stbi__stdio_skip, + stbi__stdio_eof, +}; + +static void stbi__start_file(stbi__context *s, FILE *f) +{ + stbi__start_callbacks(s, &stbi__stdio_callbacks, (void *) f); +} + +//static void stop_file(stbi__context *s) { } + +#endif // !STBI_NO_STDIO + +static void stbi__rewind(stbi__context *s) +{ + // conceptually rewind SHOULD rewind to the beginning of the stream, + // but we just rewind to the beginning of the initial buffer, because + // we only use it after doing 'test', which only ever looks at at most 92 bytes + s->img_buffer = s->img_buffer_original; +} + +static int stbi__jpeg_test(stbi__context *s); +static stbi_uc *stbi__jpeg_load(stbi__context *s, int *x, int *y, int *comp, int req_comp); +static int stbi__jpeg_info(stbi__context *s, int *x, int *y, int *comp); +static int stbi__png_test(stbi__context *s); +static stbi_uc *stbi__png_load(stbi__context *s, int *x, int *y, int *comp, int req_comp); +static int stbi__png_info(stbi__context *s, int *x, int *y, int *comp); +static int stbi__bmp_test(stbi__context *s); +static stbi_uc *stbi__bmp_load(stbi__context *s, int *x, int *y, int *comp, int req_comp); +static int stbi__tga_test(stbi__context *s); +static stbi_uc *stbi__tga_load(stbi__context *s, int *x, int *y, int *comp, int req_comp); +static int stbi__tga_info(stbi__context *s, int *x, int *y, int *comp); +static int stbi__psd_test(stbi__context *s); +static stbi_uc *stbi__psd_load(stbi__context *s, int *x, int *y, int *comp, int req_comp); +#ifndef STBI_NO_HDR +static int stbi__hdr_test(stbi__context *s); +static float *stbi__hdr_load(stbi__context *s, int *x, int *y, int *comp, int req_comp); +#endif +static int stbi__pic_test(stbi__context *s); +static stbi_uc *stbi__pic_load(stbi__context *s, int *x, int *y, int *comp, int req_comp); +static int stbi__gif_test(stbi__context *s); +static stbi_uc *stbi__gif_load(stbi__context *s, int *x, int *y, int *comp, int req_comp); +static int stbi__gif_info(stbi__context *s, int *x, int *y, int *comp); + + +// this is not threadsafe +static const char *stbi__g_failure_reason; + +STBIDEF const char *stbi_failure_reason(void) +{ + return stbi__g_failure_reason; +} + +static int stbi__err(const char *str) +{ + stbi__g_failure_reason = str; + return 0; +} + +static void *stbi__malloc(size_t size) +{ + return malloc(size); +} + +// stbi__err - error +// stbi__errpf - error returning pointer to float +// stbi__errpuc - error returning pointer to unsigned char + +#ifdef STBI_NO_FAILURE_STRINGS +#define stbi__err(x,y) 0 +#elif defined(STBI_FAILURE_USERMSG) +#define stbi__err(x,y) stbi__err(y) +#else +#define stbi__err(x,y) stbi__err(x) +#endif + +#define stbi__errpf(x,y) ((float *) (stbi__err(x,y)?NULL:NULL)) +#define stbi__errpuc(x,y) ((unsigned char *) (stbi__err(x,y)?NULL:NULL)) + +STBIDEF void stbi_image_free(void *retval_from_stbi_load) +{ + free(retval_from_stbi_load); +} + +#ifndef STBI_NO_HDR +static float *stbi__ldr_to_hdr(stbi_uc *data, int x, int y, int comp); +static stbi_uc *stbi__hdr_to_ldr(float *data, int x, int y, int comp); +#endif + +static unsigned char *stbi_load_main(stbi__context *s, int *x, int *y, int *comp, int req_comp) +{ + if (stbi__jpeg_test(s)) return stbi__jpeg_load(s,x,y,comp,req_comp); + if (stbi__png_test(s)) return stbi__png_load(s,x,y,comp,req_comp); + if (stbi__bmp_test(s)) return stbi__bmp_load(s,x,y,comp,req_comp); + if (stbi__gif_test(s)) return stbi__gif_load(s,x,y,comp,req_comp); + if (stbi__psd_test(s)) return stbi__psd_load(s,x,y,comp,req_comp); + if (stbi__pic_test(s)) return stbi__pic_load(s,x,y,comp,req_comp); + +#ifndef STBI_NO_HDR + if (stbi__hdr_test(s)) { + float *hdr = stbi__hdr_load(s, x,y,comp,req_comp); + return stbi__hdr_to_ldr(hdr, *x, *y, req_comp ? req_comp : *comp); + } +#endif + + // test tga last because it's a crappy test! + if (stbi__tga_test(s)) + return stbi__tga_load(s,x,y,comp,req_comp); + return stbi__errpuc("unknown image type", "Image not of any known type, or corrupt"); +} + +#ifndef STBI_NO_STDIO + +FILE *stbi__fopen(char const *filename, char const *mode) +{ + FILE *f; +#if defined(_MSC_VER) && _MSC_VER >= 1400 + if (0 != fopen_s(&f, filename, mode)) + f=0; +#else + f = fopen(filename, mode); +#endif + return f; +} + + +STBIDEF unsigned char *stbi_load(char const *filename, int *x, int *y, int *comp, int req_comp) +{ + FILE *f = stbi__fopen(filename, "rb"); + unsigned char *result; + if (!f) return stbi__errpuc("can't fopen", "Unable to open file"); + result = stbi_load_from_file(f,x,y,comp,req_comp); + fclose(f); + return result; +} + +STBIDEF unsigned char *stbi_load_from_file(FILE *f, int *x, int *y, int *comp, int req_comp) +{ + unsigned char *result; + stbi__context s; + stbi__start_file(&s,f); + result = stbi_load_main(&s,x,y,comp,req_comp); + if (result) { + // need to 'unget' all the characters in the IO buffer + fseek(f, - (int) (s.img_buffer_end - s.img_buffer), SEEK_CUR); + } + return result; +} +#endif //!STBI_NO_STDIO + +STBIDEF unsigned char *stbi_load_from_memory(stbi_uc const *buffer, int len, int *x, int *y, int *comp, int req_comp) +{ + stbi__context s; + stbi__start_mem(&s,buffer,len); + return stbi_load_main(&s,x,y,comp,req_comp); +} + +unsigned char *stbi_load_from_callbacks(stbi_io_callbacks const *clbk, void *user, int *x, int *y, int *comp, int req_comp) +{ + stbi__context s; + stbi__start_callbacks(&s, (stbi_io_callbacks *) clbk, user); + return stbi_load_main(&s,x,y,comp,req_comp); +} + +#ifndef STBI_NO_HDR + +float *stbi_loadf_main(stbi__context *s, int *x, int *y, int *comp, int req_comp) +{ + unsigned char *data; +#ifndef STBI_NO_HDR + if (stbi__hdr_test(s)) + return stbi__hdr_load(s,x,y,comp,req_comp); +#endif + data = stbi_load_main(s, x, y, comp, req_comp); + if (data) + return stbi__ldr_to_hdr(data, *x, *y, req_comp ? req_comp : *comp); + return stbi__errpf("unknown image type", "Image not of any known type, or corrupt"); +} + +float *stbi_loadf_from_memory(stbi_uc const *buffer, int len, int *x, int *y, int *comp, int req_comp) +{ + stbi__context s; + stbi__start_mem(&s,buffer,len); + return stbi_loadf_main(&s,x,y,comp,req_comp); +} + +float *stbi_loadf_from_callbacks(stbi_io_callbacks const *clbk, void *user, int *x, int *y, int *comp, int req_comp) +{ + stbi__context s; + stbi__start_callbacks(&s, (stbi_io_callbacks *) clbk, user); + return stbi_loadf_main(&s,x,y,comp,req_comp); +} + +#ifndef STBI_NO_STDIO +float *stbi_loadf(char const *filename, int *x, int *y, int *comp, int req_comp) +{ + float *result; + FILE *f = stbi__fopen(filename, "rb"); + if (!f) return stbi__errpf("can't fopen", "Unable to open file"); + result = stbi_loadf_from_file(f,x,y,comp,req_comp); + fclose(f); + return result; +} + +float *stbi_loadf_from_file(FILE *f, int *x, int *y, int *comp, int req_comp) +{ + stbi__context s; + stbi__start_file(&s,f); + return stbi_loadf_main(&s,x,y,comp,req_comp); +} +#endif // !STBI_NO_STDIO + +#endif // !STBI_NO_HDR + +// these is-hdr-or-not is defined independent of whether STBI_NO_HDR is +// defined, for API simplicity; if STBI_NO_HDR is defined, it always +// reports false! + +int stbi_is_hdr_from_memory(stbi_uc const *buffer, int len) +{ +#ifndef STBI_NO_HDR + stbi__context s; + stbi__start_mem(&s,buffer,len); + return stbi__hdr_test(&s); +#else + STBI_NOTUSED(buffer); + STBI_NOTUSED(len); + return 0; +#endif +} + +#ifndef STBI_NO_STDIO +STBIDEF int stbi_is_hdr (char const *filename) +{ + FILE *f = stbi__fopen(filename, "rb"); + int result=0; + if (f) { + result = stbi_is_hdr_from_file(f); + fclose(f); + } + return result; +} + +STBIDEF int stbi_is_hdr_from_file(FILE *f) +{ +#ifndef STBI_NO_HDR + stbi__context s; + stbi__start_file(&s,f); + return stbi__hdr_test(&s); +#else + return 0; +#endif +} +#endif // !STBI_NO_STDIO + +STBIDEF int stbi_is_hdr_from_callbacks(stbi_io_callbacks const *clbk, void *user) +{ +#ifndef STBI_NO_HDR + stbi__context s; + stbi__start_callbacks(&s, (stbi_io_callbacks *) clbk, user); + return stbi__hdr_test(&s); +#else + return 0; +#endif +} + +#ifndef STBI_NO_HDR +static float stbi__h2l_gamma_i=1.0f/2.2f, stbi__h2l_scale_i=1.0f; +static float stbi__l2h_gamma=2.2f, stbi__l2h_scale=1.0f; + +void stbi_hdr_to_ldr_gamma(float gamma) { stbi__h2l_gamma_i = 1/gamma; } +void stbi_hdr_to_ldr_scale(float scale) { stbi__h2l_scale_i = 1/scale; } + +void stbi_ldr_to_hdr_gamma(float gamma) { stbi__l2h_gamma = gamma; } +void stbi_ldr_to_hdr_scale(float scale) { stbi__l2h_scale = scale; } +#endif + + +////////////////////////////////////////////////////////////////////////////// +// +// Common code used by all image loaders +// + +enum +{ + SCAN_load=0, + SCAN_type, + SCAN_header +}; + +static void stbi__refill_buffer(stbi__context *s) +{ + int n = (s->io.read)(s->io_user_data,(char*)s->buffer_start,s->buflen); + if (n == 0) { + // at end of file, treat same as if from memory, but need to handle case + // where s->img_buffer isn't pointing to safe memory, e.g. 0-byte file + s->read_from_callbacks = 0; + s->img_buffer = s->buffer_start; + s->img_buffer_end = s->buffer_start+1; + *s->img_buffer = 0; + } else { + s->img_buffer = s->buffer_start; + s->img_buffer_end = s->buffer_start + n; + } +} + +stbi_inline static stbi_uc stbi__get8(stbi__context *s) +{ + if (s->img_buffer < s->img_buffer_end) + return *s->img_buffer++; + if (s->read_from_callbacks) { + stbi__refill_buffer(s); + return *s->img_buffer++; + } + return 0; +} + +stbi_inline static int stbi__at_eof(stbi__context *s) +{ + if (s->io.read) { + if (!(s->io.eof)(s->io_user_data)) return 0; + // if feof() is true, check if buffer = end + // special case: we've only got the special 0 character at the end + if (s->read_from_callbacks == 0) return 1; + } + + return s->img_buffer >= s->img_buffer_end; +} + +static void stbi__skip(stbi__context *s, int n) +{ + if (s->io.read) { + int blen = (int) (s->img_buffer_end - s->img_buffer); + if (blen < n) { + s->img_buffer = s->img_buffer_end; + (s->io.skip)(s->io_user_data, n - blen); + return; + } + } + s->img_buffer += n; +} + +static int stbi__getn(stbi__context *s, stbi_uc *buffer, int n) +{ + if (s->io.read) { + int blen = (int) (s->img_buffer_end - s->img_buffer); + if (blen < n) { + int res, count; + + memcpy(buffer, s->img_buffer, blen); + + count = (s->io.read)(s->io_user_data, (char*) buffer + blen, n - blen); + res = (count == (n-blen)); + s->img_buffer = s->img_buffer_end; + return res; + } + } + + if (s->img_buffer+n <= s->img_buffer_end) { + memcpy(buffer, s->img_buffer, n); + s->img_buffer += n; + return 1; + } else + return 0; +} + +static int stbi__get16be(stbi__context *s) +{ + int z = stbi__get8(s); + return (z << 8) + stbi__get8(s); +} + +static stbi__uint32 stbi__get32be(stbi__context *s) +{ + stbi__uint32 z = stbi__get16be(s); + return (z << 16) + stbi__get16be(s); +} + +static int stbi__get16le(stbi__context *s) +{ + int z = stbi__get8(s); + return z + (stbi__get8(s) << 8); +} + +static stbi__uint32 stbi__get32le(stbi__context *s) +{ + stbi__uint32 z = stbi__get16le(s); + return z + (stbi__get16le(s) << 16); +} + +////////////////////////////////////////////////////////////////////////////// +// +// generic converter from built-in img_n to req_comp +// individual types do this automatically as much as possible (e.g. jpeg +// does all cases internally since it needs to colorspace convert anyway, +// and it never has alpha, so very few cases ). png can automatically +// interleave an alpha=255 channel, but falls back to this for other cases +// +// assume data buffer is malloced, so malloc a new one and free that one +// only failure mode is malloc failing + +static stbi_uc stbi__compute_y(int r, int g, int b) +{ + return (stbi_uc) (((r*77) + (g*150) + (29*b)) >> 8); +} + +static unsigned char *stbi__convert_format(unsigned char *data, int img_n, int req_comp, unsigned int x, unsigned int y) +{ + int i,j; + unsigned char *good; + + if (req_comp == img_n) return data; + STBI_ASSERT(req_comp >= 1 && req_comp <= 4); + + good = (unsigned char *) stbi__malloc(req_comp * x * y); + if (good == NULL) { + free(data); + return stbi__errpuc("outofmem", "Out of memory"); + } + + for (j=0; j < (int) y; ++j) { + unsigned char *src = data + j * x * img_n ; + unsigned char *dest = good + j * x * req_comp; + +#define COMBO(a,b) ((a)*8+(b)) +#define CASE(a,b) case COMBO(a,b): for(i=x-1; i >= 0; --i, src += a, dest += b) + // convert source image with img_n components to one with req_comp components; + // avoid switch per pixel, so use switch per scanline and massive macros + switch (COMBO(img_n, req_comp)) { + CASE(1,2) dest[0]=src[0], dest[1]=255; break; + CASE(1,3) dest[0]=dest[1]=dest[2]=src[0]; break; + CASE(1,4) dest[0]=dest[1]=dest[2]=src[0], dest[3]=255; break; + CASE(2,1) dest[0]=src[0]; break; + CASE(2,3) dest[0]=dest[1]=dest[2]=src[0]; break; + CASE(2,4) dest[0]=dest[1]=dest[2]=src[0], dest[3]=src[1]; break; + CASE(3,4) dest[0]=src[0],dest[1]=src[1],dest[2]=src[2],dest[3]=255; break; + CASE(3,1) dest[0]=stbi__compute_y(src[0],src[1],src[2]); break; + CASE(3,2) dest[0]=stbi__compute_y(src[0],src[1],src[2]), dest[1] = 255; break; + CASE(4,1) dest[0]=stbi__compute_y(src[0],src[1],src[2]); break; + CASE(4,2) dest[0]=stbi__compute_y(src[0],src[1],src[2]), dest[1] = src[3]; break; + CASE(4,3) dest[0]=src[0],dest[1]=src[1],dest[2]=src[2]; break; + default: STBI_ASSERT(0); + } +#undef CASE + } + + free(data); + return good; +} + +#ifndef STBI_NO_HDR +static float *stbi__ldr_to_hdr(stbi_uc *data, int x, int y, int comp) +{ + int i,k,n; + float *output = (float *) stbi__malloc(x * y * comp * sizeof(float)); + if (output == NULL) { free(data); return stbi__errpf("outofmem", "Out of memory"); } + // compute number of non-alpha components + if (comp & 1) n = comp; else n = comp-1; + for (i=0; i < x*y; ++i) { + for (k=0; k < n; ++k) { + output[i*comp + k] = (float) (pow(data[i*comp+k]/255.0f, stbi__l2h_gamma) * stbi__l2h_scale); + } + if (k < comp) output[i*comp + k] = data[i*comp+k]/255.0f; + } + free(data); + return output; +} + +#define stbi__float2int(x) ((int) (x)) +static stbi_uc *stbi__hdr_to_ldr(float *data, int x, int y, int comp) +{ + int i,k,n; + stbi_uc *output = (stbi_uc *) stbi__malloc(x * y * comp); + if (output == NULL) { free(data); return stbi__errpuc("outofmem", "Out of memory"); } + // compute number of non-alpha components + if (comp & 1) n = comp; else n = comp-1; + for (i=0; i < x*y; ++i) { + for (k=0; k < n; ++k) { + float z = (float) pow(data[i*comp+k]*stbi__h2l_scale_i, stbi__h2l_gamma_i) * 255 + 0.5f; + if (z < 0) z = 0; + if (z > 255) z = 255; + output[i*comp + k] = (stbi_uc) stbi__float2int(z); + } + if (k < comp) { + float z = data[i*comp+k] * 255 + 0.5f; + if (z < 0) z = 0; + if (z > 255) z = 255; + output[i*comp + k] = (stbi_uc) stbi__float2int(z); + } + } + free(data); + return output; +} +#endif + +////////////////////////////////////////////////////////////////////////////// +// +// "baseline" JPEG/JFIF decoder (not actually fully baseline implementation) +// +// simple implementation +// - channel subsampling of at most 2 in each dimension +// - doesn't support delayed output of y-dimension +// - simple interface (only one output format: 8-bit interleaved RGB) +// - doesn't try to recover corrupt jpegs +// - doesn't allow partial loading, loading multiple at once +// - still fast on x86 (copying globals into locals doesn't help x86) +// - allocates lots of intermediate memory (full size of all components) +// - non-interleaved case requires this anyway +// - allows good upsampling (see next) +// high-quality +// - upsampled channels are bilinearly interpolated, even across blocks +// - quality integer IDCT derived from IJG's 'slow' +// performance +// - fast huffman; reasonable integer IDCT +// - uses a lot of intermediate memory, could cache poorly +// - load http://nothings.org/remote/anemones.jpg 3 times on 2.8Ghz P4 +// stb_jpeg: 1.34 seconds (MSVC6, default release build) +// stb_jpeg: 1.06 seconds (MSVC6, processor = Pentium Pro) +// IJL11.dll: 1.08 seconds (compiled by intel) +// IJG 1998: 0.98 seconds (MSVC6, makefile provided by IJG) +// IJG 1998: 0.95 seconds (MSVC6, makefile + proc=PPro) + +// huffman decoding acceleration +#define FAST_BITS 9 // larger handles more cases; smaller stomps less cache + +typedef struct +{ + stbi_uc fast[1 << FAST_BITS]; + // weirdly, repacking this into AoS is a 10% speed loss, instead of a win + stbi__uint16 code[256]; + stbi_uc values[256]; + stbi_uc size[257]; + unsigned int maxcode[18]; + int delta[17]; // old 'firstsymbol' - old 'firstcode' +} stbi__huffman; + +typedef struct +{ +#ifdef STBI_SIMD + unsigned short dequant2[4][64]; +#endif + stbi__context *s; + stbi__huffman huff_dc[4]; + stbi__huffman huff_ac[4]; + stbi_uc dequant[4][64]; + + // sizes for components, interleaved MCUs + int img_h_max, img_v_max; + int img_mcu_x, img_mcu_y; + int img_mcu_w, img_mcu_h; + + // definition of jpeg image component + struct + { + int id; + int h,v; + int tq; + int hd,ha; + int dc_pred; + + int x,y,w2,h2; + stbi_uc *data; + void *raw_data; + stbi_uc *linebuf; + } img_comp[4]; + + stbi__uint32 code_buffer; // jpeg entropy-coded buffer + int code_bits; // number of valid bits + unsigned char marker; // marker seen while filling entropy buffer + int nomore; // flag if we saw a marker so must stop + + int scan_n, order[4]; + int restart_interval, todo; +} stbi__jpeg; + +static int stbi__build_huffman(stbi__huffman *h, int *count) +{ + int i,j,k=0,code; + // build size list for each symbol (from JPEG spec) + for (i=0; i < 16; ++i) + for (j=0; j < count[i]; ++j) + h->size[k++] = (stbi_uc) (i+1); + h->size[k] = 0; + + // compute actual symbols (from jpeg spec) + code = 0; + k = 0; + for(j=1; j <= 16; ++j) { + // compute delta to add to code to compute symbol id + h->delta[j] = k - code; + if (h->size[k] == j) { + while (h->size[k] == j) + h->code[k++] = (stbi__uint16) (code++); + if (code-1 >= (1 << j)) return stbi__err("bad code lengths","Corrupt JPEG"); + } + // compute largest code + 1 for this size, preshifted as needed later + h->maxcode[j] = code << (16-j); + code <<= 1; + } + h->maxcode[j] = 0xffffffff; + + // build non-spec acceleration table; 255 is flag for not-accelerated + memset(h->fast, 255, 1 << FAST_BITS); + for (i=0; i < k; ++i) { + int s = h->size[i]; + if (s <= FAST_BITS) { + int c = h->code[i] << (FAST_BITS-s); + int m = 1 << (FAST_BITS-s); + for (j=0; j < m; ++j) { + h->fast[c+j] = (stbi_uc) i; + } + } + } + return 1; +} + +static void stbi__grow_buffer_unsafe(stbi__jpeg *j) +{ + do { + int b = j->nomore ? 0 : stbi__get8(j->s); + if (b == 0xff) { + int c = stbi__get8(j->s); + if (c != 0) { + j->marker = (unsigned char) c; + j->nomore = 1; + return; + } + } + j->code_buffer |= b << (24 - j->code_bits); + j->code_bits += 8; + } while (j->code_bits <= 24); +} + +// (1 << n) - 1 +static stbi__uint32 stbi__bmask[17]={0,1,3,7,15,31,63,127,255,511,1023,2047,4095,8191,16383,32767,65535}; + +// decode a jpeg huffman value from the bitstream +stbi_inline static int stbi__jpeg_huff_decode(stbi__jpeg *j, stbi__huffman *h) +{ + unsigned int temp; + int c,k; + + if (j->code_bits < 16) stbi__grow_buffer_unsafe(j); + + // look at the top FAST_BITS and determine what symbol ID it is, + // if the code is <= FAST_BITS + c = (j->code_buffer >> (32 - FAST_BITS)) & ((1 << FAST_BITS)-1); + k = h->fast[c]; + if (k < 255) { + int s = h->size[k]; + if (s > j->code_bits) + return -1; + j->code_buffer <<= s; + j->code_bits -= s; + return h->values[k]; + } + + // naive test is to shift the code_buffer down so k bits are + // valid, then test against maxcode. To speed this up, we've + // preshifted maxcode left so that it has (16-k) 0s at the + // end; in other words, regardless of the number of bits, it + // wants to be compared against something shifted to have 16; + // that way we don't need to shift inside the loop. + temp = j->code_buffer >> 16; + for (k=FAST_BITS+1 ; ; ++k) + if (temp < h->maxcode[k]) + break; + if (k == 17) { + // error! code not found + j->code_bits -= 16; + return -1; + } + + if (k > j->code_bits) + return -1; + + // convert the huffman code to the symbol id + c = ((j->code_buffer >> (32 - k)) & stbi__bmask[k]) + h->delta[k]; + STBI_ASSERT((((j->code_buffer) >> (32 - h->size[c])) & stbi__bmask[h->size[c]]) == h->code[c]); + + // convert the id to a symbol + j->code_bits -= k; + j->code_buffer <<= k; + return h->values[c]; +} + +// combined JPEG 'receive' and JPEG 'extend', since baseline +// always extends everything it receives. +stbi_inline static int stbi__extend_receive(stbi__jpeg *j, int n) +{ + unsigned int m = 1 << (n-1); + unsigned int k; + if (j->code_bits < n) stbi__grow_buffer_unsafe(j); + +#if 1 + k = stbi_lrot(j->code_buffer, n); + j->code_buffer = k & ~stbi__bmask[n]; + k &= stbi__bmask[n]; + j->code_bits -= n; +#else + k = (j->code_buffer >> (32 - n)) & stbi__bmask[n]; + j->code_bits -= n; + j->code_buffer <<= n; +#endif + // the following test is probably a random branch that won't + // predict well. I tried to table accelerate it but failed. + // maybe it's compiling as a conditional move? + if (k < m) + return (-1 << n) + k + 1; + else + return k; +} + +// given a value that's at position X in the zigzag stream, +// where does it appear in the 8x8 matrix coded as row-major? +static stbi_uc stbi__jpeg_dezigzag[64+15] = +{ + 0, 1, 8, 16, 9, 2, 3, 10, + 17, 24, 32, 25, 18, 11, 4, 5, + 12, 19, 26, 33, 40, 48, 41, 34, + 27, 20, 13, 6, 7, 14, 21, 28, + 35, 42, 49, 56, 57, 50, 43, 36, + 29, 22, 15, 23, 30, 37, 44, 51, + 58, 59, 52, 45, 38, 31, 39, 46, + 53, 60, 61, 54, 47, 55, 62, 63, + // let corrupt input sample past end + 63, 63, 63, 63, 63, 63, 63, 63, + 63, 63, 63, 63, 63, 63, 63 +}; + +// decode one 64-entry block-- +static int stbi__jpeg_decode_block(stbi__jpeg *j, short data[64], stbi__huffman *hdc, stbi__huffman *hac, int b) +{ + int diff,dc,k; + int t = stbi__jpeg_huff_decode(j, hdc); + if (t < 0) return stbi__err("bad huffman code","Corrupt JPEG"); + + // 0 all the ac values now so we can do it 32-bits at a time + memset(data,0,64*sizeof(data[0])); + + diff = t ? stbi__extend_receive(j, t) : 0; + dc = j->img_comp[b].dc_pred + diff; + j->img_comp[b].dc_pred = dc; + data[0] = (short) dc; + + // decode AC components, see JPEG spec + k = 1; + do { + int r,s; + int rs = stbi__jpeg_huff_decode(j, hac); + if (rs < 0) return stbi__err("bad huffman code","Corrupt JPEG"); + s = rs & 15; + r = rs >> 4; + if (s == 0) { + if (rs != 0xf0) break; // end block + k += 16; + } else { + k += r; + // decode into unzigzag'd location + data[stbi__jpeg_dezigzag[k++]] = (short) stbi__extend_receive(j,s); + } + } while (k < 64); + return 1; +} + +// take a -128..127 value and stbi__clamp it and convert to 0..255 +stbi_inline static stbi_uc stbi__clamp(int x) +{ + // trick to use a single test to catch both cases + if ((unsigned int) x > 255) { + if (x < 0) return 0; + if (x > 255) return 255; + } + return (stbi_uc) x; +} + +#define stbi__f2f(x) (int) (((x) * 4096 + 0.5)) +#define stbi__fsh(x) ((x) << 12) + +// derived from jidctint -- DCT_ISLOW +#define STBI__IDCT_1D(s0,s1,s2,s3,s4,s5,s6,s7) \ +int t0,t1,t2,t3,p1,p2,p3,p4,p5,x0,x1,x2,x3; \ +p2 = s2; \ +p3 = s6; \ +p1 = (p2+p3) * stbi__f2f(0.5411961f); \ +t2 = p1 + p3*stbi__f2f(-1.847759065f); \ +t3 = p1 + p2*stbi__f2f( 0.765366865f); \ +p2 = s0; \ +p3 = s4; \ +t0 = stbi__fsh(p2+p3); \ +t1 = stbi__fsh(p2-p3); \ +x0 = t0+t3; \ +x3 = t0-t3; \ +x1 = t1+t2; \ +x2 = t1-t2; \ +t0 = s7; \ +t1 = s5; \ +t2 = s3; \ +t3 = s1; \ +p3 = t0+t2; \ +p4 = t1+t3; \ +p1 = t0+t3; \ +p2 = t1+t2; \ +p5 = (p3+p4)*stbi__f2f( 1.175875602f); \ +t0 = t0*stbi__f2f( 0.298631336f); \ +t1 = t1*stbi__f2f( 2.053119869f); \ +t2 = t2*stbi__f2f( 3.072711026f); \ +t3 = t3*stbi__f2f( 1.501321110f); \ +p1 = p5 + p1*stbi__f2f(-0.899976223f); \ +p2 = p5 + p2*stbi__f2f(-2.562915447f); \ +p3 = p3*stbi__f2f(-1.961570560f); \ +p4 = p4*stbi__f2f(-0.390180644f); \ +t3 += p1+p4; \ +t2 += p2+p3; \ +t1 += p2+p4; \ +t0 += p1+p3; + +#ifdef STBI_SIMD +typedef unsigned short stbi_dequantize_t; +#else +typedef stbi_uc stbi_dequantize_t; +#endif + +// .344 seconds on 3*anemones.jpg +static void stbi__idct_block(stbi_uc *out, int out_stride, short data[64], stbi_dequantize_t *dequantize) +{ + int i,val[64],*v=val; + stbi_dequantize_t *dq = dequantize; + stbi_uc *o; + short *d = data; + + // columns + for (i=0; i < 8; ++i,++d,++dq, ++v) { + // if all zeroes, shortcut -- this avoids dequantizing 0s and IDCTing + if (d[ 8]==0 && d[16]==0 && d[24]==0 && d[32]==0 + && d[40]==0 && d[48]==0 && d[56]==0) { + // no shortcut 0 seconds + // (1|2|3|4|5|6|7)==0 0 seconds + // all separate -0.047 seconds + // 1 && 2|3 && 4|5 && 6|7: -0.047 seconds + int dcterm = d[0] * dq[0] << 2; + v[0] = v[8] = v[16] = v[24] = v[32] = v[40] = v[48] = v[56] = dcterm; + } else { + STBI__IDCT_1D(d[ 0]*dq[ 0],d[ 8]*dq[ 8],d[16]*dq[16],d[24]*dq[24], + d[32]*dq[32],d[40]*dq[40],d[48]*dq[48],d[56]*dq[56]) + // constants scaled things up by 1<<12; let's bring them back + // down, but keep 2 extra bits of precision + x0 += 512; x1 += 512; x2 += 512; x3 += 512; + v[ 0] = (x0+t3) >> 10; + v[56] = (x0-t3) >> 10; + v[ 8] = (x1+t2) >> 10; + v[48] = (x1-t2) >> 10; + v[16] = (x2+t1) >> 10; + v[40] = (x2-t1) >> 10; + v[24] = (x3+t0) >> 10; + v[32] = (x3-t0) >> 10; + } + } + + for (i=0, v=val, o=out; i < 8; ++i,v+=8,o+=out_stride) { + // no fast case since the first 1D IDCT spread components out + STBI__IDCT_1D(v[0],v[1],v[2],v[3],v[4],v[5],v[6],v[7]) + // constants scaled things up by 1<<12, plus we had 1<<2 from first + // loop, plus horizontal and vertical each scale by sqrt(8) so together + // we've got an extra 1<<3, so 1<<17 total we need to remove. + // so we want to round that, which means adding 0.5 * 1<<17, + // aka 65536. Also, we'll end up with -128 to 127 that we want + // to encode as 0..255 by adding 128, so we'll add that before the shift + x0 += 65536 + (128<<17); + x1 += 65536 + (128<<17); + x2 += 65536 + (128<<17); + x3 += 65536 + (128<<17); + // tried computing the shifts into temps, or'ing the temps to see + // if any were out of range, but that was slower + o[0] = stbi__clamp((x0+t3) >> 17); + o[7] = stbi__clamp((x0-t3) >> 17); + o[1] = stbi__clamp((x1+t2) >> 17); + o[6] = stbi__clamp((x1-t2) >> 17); + o[2] = stbi__clamp((x2+t1) >> 17); + o[5] = stbi__clamp((x2-t1) >> 17); + o[3] = stbi__clamp((x3+t0) >> 17); + o[4] = stbi__clamp((x3-t0) >> 17); + } +} + +#ifdef STBI_SIMD +static stbi_idct_8x8 stbi__idct_installed = stbi__idct_block; + +STBIDEF void stbi_install_idct(stbi_idct_8x8 func) +{ + stbi__idct_installed = func; +} +#endif + +#define STBI__MARKER_none 0xff +// if there's a pending marker from the entropy stream, return that +// otherwise, fetch from the stream and get a marker. if there's no +// marker, return 0xff, which is never a valid marker value +static stbi_uc stbi__get_marker(stbi__jpeg *j) +{ + stbi_uc x; + if (j->marker != STBI__MARKER_none) { x = j->marker; j->marker = STBI__MARKER_none; return x; } + x = stbi__get8(j->s); + if (x != 0xff) return STBI__MARKER_none; + while (x == 0xff) + x = stbi__get8(j->s); + return x; +} + +// in each scan, we'll have scan_n components, and the order +// of the components is specified by order[] +#define STBI__RESTART(x) ((x) >= 0xd0 && (x) <= 0xd7) + +// after a restart interval, stbi__jpeg_reset the entropy decoder and +// the dc prediction +static void stbi__jpeg_reset(stbi__jpeg *j) +{ + j->code_bits = 0; + j->code_buffer = 0; + j->nomore = 0; + j->img_comp[0].dc_pred = j->img_comp[1].dc_pred = j->img_comp[2].dc_pred = 0; + j->marker = STBI__MARKER_none; + j->todo = j->restart_interval ? j->restart_interval : 0x7fffffff; + // no more than 1<<31 MCUs if no restart_interal? that's plenty safe, + // since we don't even allow 1<<30 pixels +} + +static int stbi__parse_entropy_coded_data(stbi__jpeg *z) +{ + stbi__jpeg_reset(z); + if (z->scan_n == 1) { + int i,j; +#ifdef STBI_SIMD + __declspec(align(16)) +#endif + short data[64]; + int n = z->order[0]; + // non-interleaved data, we just need to process one block at a time, + // in trivial scanline order + // number of blocks to do just depends on how many actual "pixels" this + // component has, independent of interleaved MCU blocking and such + int w = (z->img_comp[n].x+7) >> 3; + int h = (z->img_comp[n].y+7) >> 3; + for (j=0; j < h; ++j) { + for (i=0; i < w; ++i) { + if (!stbi__jpeg_decode_block(z, data, z->huff_dc+z->img_comp[n].hd, z->huff_ac+z->img_comp[n].ha, n)) return 0; +#ifdef STBI_SIMD + stbi__idct_installed(z->img_comp[n].data+z->img_comp[n].w2*j*8+i*8, z->img_comp[n].w2, data, z->dequant2[z->img_comp[n].tq]); +#else + stbi__idct_block(z->img_comp[n].data+z->img_comp[n].w2*j*8+i*8, z->img_comp[n].w2, data, z->dequant[z->img_comp[n].tq]); +#endif + // every data block is an MCU, so countdown the restart interval + if (--z->todo <= 0) { + if (z->code_bits < 24) stbi__grow_buffer_unsafe(z); + // if it's NOT a restart, then just bail, so we get corrupt data + // rather than no data + if (!STBI__RESTART(z->marker)) return 1; + stbi__jpeg_reset(z); + } + } + } + } else { // interleaved! + int i,j,k,x,y; + short data[64]; + for (j=0; j < z->img_mcu_y; ++j) { + for (i=0; i < z->img_mcu_x; ++i) { + // scan an interleaved mcu... process scan_n components in order + for (k=0; k < z->scan_n; ++k) { + int n = z->order[k]; + // scan out an mcu's worth of this component; that's just determined + // by the basic H and V specified for the component + for (y=0; y < z->img_comp[n].v; ++y) { + for (x=0; x < z->img_comp[n].h; ++x) { + int x2 = (i*z->img_comp[n].h + x)*8; + int y2 = (j*z->img_comp[n].v + y)*8; + if (!stbi__jpeg_decode_block(z, data, z->huff_dc+z->img_comp[n].hd, z->huff_ac+z->img_comp[n].ha, n)) return 0; +#ifdef STBI_SIMD + stbi__idct_installed(z->img_comp[n].data+z->img_comp[n].w2*y2+x2, z->img_comp[n].w2, data, z->dequant2[z->img_comp[n].tq]); +#else + stbi__idct_block(z->img_comp[n].data+z->img_comp[n].w2*y2+x2, z->img_comp[n].w2, data, z->dequant[z->img_comp[n].tq]); +#endif + } + } + } + // after all interleaved components, that's an interleaved MCU, + // so now count down the restart interval + if (--z->todo <= 0) { + if (z->code_bits < 24) stbi__grow_buffer_unsafe(z); + // if it's NOT a restart, then just bail, so we get corrupt data + // rather than no data + if (!STBI__RESTART(z->marker)) return 1; + stbi__jpeg_reset(z); + } + } + } + } + return 1; +} + +static int stbi__process_marker(stbi__jpeg *z, int m) +{ + int L; + switch (m) { + case STBI__MARKER_none: // no marker found + return stbi__err("expected marker","Corrupt JPEG"); + + case 0xC2: // stbi__SOF - progressive + return stbi__err("progressive jpeg","JPEG format not supported (progressive)"); + + case 0xDD: // DRI - specify restart interval + if (stbi__get16be(z->s) != 4) return stbi__err("bad DRI len","Corrupt JPEG"); + z->restart_interval = stbi__get16be(z->s); + return 1; + + case 0xDB: // DQT - define quantization table + L = stbi__get16be(z->s)-2; + while (L > 0) { + int q = stbi__get8(z->s); + int p = q >> 4; + int t = q & 15,i; + if (p != 0) return stbi__err("bad DQT type","Corrupt JPEG"); + if (t > 3) return stbi__err("bad DQT table","Corrupt JPEG"); + for (i=0; i < 64; ++i) + z->dequant[t][stbi__jpeg_dezigzag[i]] = stbi__get8(z->s); +#ifdef STBI_SIMD + for (i=0; i < 64; ++i) + z->dequant2[t][i] = z->dequant[t][i]; +#endif + L -= 65; + } + return L==0; + + case 0xC4: // DHT - define huffman table + L = stbi__get16be(z->s)-2; + while (L > 0) { + stbi_uc *v; + int sizes[16],i,n=0; + int q = stbi__get8(z->s); + int tc = q >> 4; + int th = q & 15; + if (tc > 1 || th > 3) return stbi__err("bad DHT header","Corrupt JPEG"); + for (i=0; i < 16; ++i) { + sizes[i] = stbi__get8(z->s); + n += sizes[i]; + } + L -= 17; + if (tc == 0) { + if (!stbi__build_huffman(z->huff_dc+th, sizes)) return 0; + v = z->huff_dc[th].values; + } else { + if (!stbi__build_huffman(z->huff_ac+th, sizes)) return 0; + v = z->huff_ac[th].values; + } + for (i=0; i < n; ++i) + v[i] = stbi__get8(z->s); + L -= n; + } + return L==0; + } + // check for comment block or APP blocks + if ((m >= 0xE0 && m <= 0xEF) || m == 0xFE) { + stbi__skip(z->s, stbi__get16be(z->s)-2); + return 1; + } + return 0; +} + +// after we see stbi__SOS +static int stbi__process_scan_header(stbi__jpeg *z) +{ + int i; + int Ls = stbi__get16be(z->s); + z->scan_n = stbi__get8(z->s); + if (z->scan_n < 1 || z->scan_n > 4 || z->scan_n > (int) z->s->img_n) return stbi__err("bad stbi__SOS component count","Corrupt JPEG"); + if (Ls != 6+2*z->scan_n) return stbi__err("bad stbi__SOS len","Corrupt JPEG"); + for (i=0; i < z->scan_n; ++i) { + int id = stbi__get8(z->s), which; + int q = stbi__get8(z->s); + for (which = 0; which < z->s->img_n; ++which) + if (z->img_comp[which].id == id) + break; + if (which == z->s->img_n) return 0; + z->img_comp[which].hd = q >> 4; if (z->img_comp[which].hd > 3) return stbi__err("bad DC huff","Corrupt JPEG"); + z->img_comp[which].ha = q & 15; if (z->img_comp[which].ha > 3) return stbi__err("bad AC huff","Corrupt JPEG"); + z->order[i] = which; + } + if (stbi__get8(z->s) != 0) return stbi__err("bad stbi__SOS","Corrupt JPEG"); + stbi__get8(z->s); // should be 63, but might be 0 + if (stbi__get8(z->s) != 0) return stbi__err("bad stbi__SOS","Corrupt JPEG"); + + return 1; +} + +static int stbi__process_frame_header(stbi__jpeg *z, int scan) +{ + stbi__context *s = z->s; + int Lf,p,i,q, h_max=1,v_max=1,c; + Lf = stbi__get16be(s); if (Lf < 11) return stbi__err("bad stbi__SOF len","Corrupt JPEG"); // JPEG + p = stbi__get8(s); if (p != 8) return stbi__err("only 8-bit","JPEG format not supported: 8-bit only"); // JPEG baseline + s->img_y = stbi__get16be(s); if (s->img_y == 0) return stbi__err("no header height", "JPEG format not supported: delayed height"); // Legal, but we don't handle it--but neither does IJG + s->img_x = stbi__get16be(s); if (s->img_x == 0) return stbi__err("0 width","Corrupt JPEG"); // JPEG requires + c = stbi__get8(s); + if (c != 3 && c != 1) return stbi__err("bad component count","Corrupt JPEG"); // JFIF requires + s->img_n = c; + for (i=0; i < c; ++i) { + z->img_comp[i].data = NULL; + z->img_comp[i].linebuf = NULL; + } + + if (Lf != 8+3*s->img_n) return stbi__err("bad stbi__SOF len","Corrupt JPEG"); + + for (i=0; i < s->img_n; ++i) { + z->img_comp[i].id = stbi__get8(s); + if (z->img_comp[i].id != i+1) // JFIF requires + if (z->img_comp[i].id != i) // some version of jpegtran outputs non-JFIF-compliant files! + return stbi__err("bad component ID","Corrupt JPEG"); + q = stbi__get8(s); + z->img_comp[i].h = (q >> 4); if (!z->img_comp[i].h || z->img_comp[i].h > 4) return stbi__err("bad H","Corrupt JPEG"); + z->img_comp[i].v = q & 15; if (!z->img_comp[i].v || z->img_comp[i].v > 4) return stbi__err("bad V","Corrupt JPEG"); + z->img_comp[i].tq = stbi__get8(s); if (z->img_comp[i].tq > 3) return stbi__err("bad TQ","Corrupt JPEG"); + } + + if (scan != SCAN_load) return 1; + + if ((1 << 30) / s->img_x / s->img_n < s->img_y) return stbi__err("too large", "Image too large to decode"); + + for (i=0; i < s->img_n; ++i) { + if (z->img_comp[i].h > h_max) h_max = z->img_comp[i].h; + if (z->img_comp[i].v > v_max) v_max = z->img_comp[i].v; + } + + // compute interleaved mcu info + z->img_h_max = h_max; + z->img_v_max = v_max; + z->img_mcu_w = h_max * 8; + z->img_mcu_h = v_max * 8; + z->img_mcu_x = (s->img_x + z->img_mcu_w-1) / z->img_mcu_w; + z->img_mcu_y = (s->img_y + z->img_mcu_h-1) / z->img_mcu_h; + + for (i=0; i < s->img_n; ++i) { + // number of effective pixels (e.g. for non-interleaved MCU) + z->img_comp[i].x = (s->img_x * z->img_comp[i].h + h_max-1) / h_max; + z->img_comp[i].y = (s->img_y * z->img_comp[i].v + v_max-1) / v_max; + // to simplify generation, we'll allocate enough memory to decode + // the bogus oversized data from using interleaved MCUs and their + // big blocks (e.g. a 16x16 iMCU on an image of width 33); we won't + // discard the extra data until colorspace conversion + z->img_comp[i].w2 = z->img_mcu_x * z->img_comp[i].h * 8; + z->img_comp[i].h2 = z->img_mcu_y * z->img_comp[i].v * 8; + z->img_comp[i].raw_data = stbi__malloc(z->img_comp[i].w2 * z->img_comp[i].h2+15); + if (z->img_comp[i].raw_data == NULL) { + for(--i; i >= 0; --i) { + free(z->img_comp[i].raw_data); + z->img_comp[i].data = NULL; + } + return stbi__err("outofmem", "Out of memory"); + } + // align blocks for installable-idct using mmx/sse + z->img_comp[i].data = (stbi_uc*) (((size_t) z->img_comp[i].raw_data + 15) & ~15); + z->img_comp[i].linebuf = NULL; + } + + return 1; +} + +// use comparisons since in some cases we handle more than one case (e.g. stbi__SOF) +#define stbi__DNL(x) ((x) == 0xdc) +#define stbi__SOI(x) ((x) == 0xd8) +#define stbi__EOI(x) ((x) == 0xd9) +#define stbi__SOF(x) ((x) == 0xc0 || (x) == 0xc1) +#define stbi__SOS(x) ((x) == 0xda) + +static int decode_jpeg_header(stbi__jpeg *z, int scan) +{ + int m; + z->marker = STBI__MARKER_none; // initialize cached marker to empty + m = stbi__get_marker(z); + if (!stbi__SOI(m)) return stbi__err("no stbi__SOI","Corrupt JPEG"); + if (scan == SCAN_type) return 1; + m = stbi__get_marker(z); + while (!stbi__SOF(m)) { + if (!stbi__process_marker(z,m)) return 0; + m = stbi__get_marker(z); + while (m == STBI__MARKER_none) { + // some files have extra padding after their blocks, so ok, we'll scan + if (stbi__at_eof(z->s)) return stbi__err("no stbi__SOF", "Corrupt JPEG"); + m = stbi__get_marker(z); + } + } + if (!stbi__process_frame_header(z, scan)) return 0; + return 1; +} + +static int decode_jpeg_image(stbi__jpeg *j) +{ + int m; + j->restart_interval = 0; + if (!decode_jpeg_header(j, SCAN_load)) return 0; + m = stbi__get_marker(j); + while (!stbi__EOI(m)) { + if (stbi__SOS(m)) { + if (!stbi__process_scan_header(j)) return 0; + if (!stbi__parse_entropy_coded_data(j)) return 0; + if (j->marker == STBI__MARKER_none ) { + // handle 0s at the end of image data from IP Kamera 9060 + while (!stbi__at_eof(j->s)) { + int x = stbi__get8(j->s); + if (x == 255) { + j->marker = stbi__get8(j->s); + break; + } else if (x != 0) { + return 0; + } + } + // if we reach eof without hitting a marker, stbi__get_marker() below will fail and we'll eventually return 0 + } + } else { + if (!stbi__process_marker(j, m)) return 0; + } + m = stbi__get_marker(j); + } + return 1; +} + +// static jfif-centered resampling (across block boundaries) + +typedef stbi_uc *(*resample_row_func)(stbi_uc *out, stbi_uc *in0, stbi_uc *in1, + int w, int hs); + +#define stbi__div4(x) ((stbi_uc) ((x) >> 2)) + +static stbi_uc *resample_row_1(stbi_uc *out, stbi_uc *in_near, stbi_uc *in_far, int w, int hs) +{ + STBI_NOTUSED(out); + STBI_NOTUSED(in_far); + STBI_NOTUSED(w); + STBI_NOTUSED(hs); + return in_near; +} + +static stbi_uc* stbi__resample_row_v_2(stbi_uc *out, stbi_uc *in_near, stbi_uc *in_far, int w, int hs) +{ + // need to generate two samples vertically for every one in input + int i; + STBI_NOTUSED(hs); + for (i=0; i < w; ++i) + out[i] = stbi__div4(3*in_near[i] + in_far[i] + 2); + return out; +} + +static stbi_uc* stbi__resample_row_h_2(stbi_uc *out, stbi_uc *in_near, stbi_uc *in_far, int w, int hs) +{ + // need to generate two samples horizontally for every one in input + int i; + stbi_uc *input = in_near; + + if (w == 1) { + // if only one sample, can't do any interpolation + out[0] = out[1] = input[0]; + return out; + } + + out[0] = input[0]; + out[1] = stbi__div4(input[0]*3 + input[1] + 2); + for (i=1; i < w-1; ++i) { + int n = 3*input[i]+2; + out[i*2+0] = stbi__div4(n+input[i-1]); + out[i*2+1] = stbi__div4(n+input[i+1]); + } + out[i*2+0] = stbi__div4(input[w-2]*3 + input[w-1] + 2); + out[i*2+1] = input[w-1]; + + STBI_NOTUSED(in_far); + STBI_NOTUSED(hs); + + return out; +} + +#define stbi__div16(x) ((stbi_uc) ((x) >> 4)) + +static stbi_uc *stbi__resample_row_hv_2(stbi_uc *out, stbi_uc *in_near, stbi_uc *in_far, int w, int hs) +{ + // need to generate 2x2 samples for every one in input + int i,t0,t1; + if (w == 1) { + out[0] = out[1] = stbi__div4(3*in_near[0] + in_far[0] + 2); + return out; + } + + t1 = 3*in_near[0] + in_far[0]; + out[0] = stbi__div4(t1+2); + for (i=1; i < w; ++i) { + t0 = t1; + t1 = 3*in_near[i]+in_far[i]; + out[i*2-1] = stbi__div16(3*t0 + t1 + 8); + out[i*2 ] = stbi__div16(3*t1 + t0 + 8); + } + out[w*2-1] = stbi__div4(t1+2); + + STBI_NOTUSED(hs); + + return out; +} + +static stbi_uc *stbi__resample_row_generic(stbi_uc *out, stbi_uc *in_near, stbi_uc *in_far, int w, int hs) +{ + // resample with nearest-neighbor + int i,j; + STBI_NOTUSED(in_far); + for (i=0; i < w; ++i) + for (j=0; j < hs; ++j) + out[i*hs+j] = in_near[i]; + return out; +} + +#define float2fixed(x) ((int) ((x) * 65536 + 0.5)) + +// 0.38 seconds on 3*anemones.jpg (0.25 with processor = Pro) +// VC6 without processor=Pro is generating multiple LEAs per multiply! +static void stbi__YCbCr_to_RGB_row(stbi_uc *out, const stbi_uc *y, const stbi_uc *pcb, const stbi_uc *pcr, int count, int step) +{ + int i; + for (i=0; i < count; ++i) { + int y_fixed = (y[i] << 16) + 32768; // rounding + int r,g,b; + int cr = pcr[i] - 128; + int cb = pcb[i] - 128; + r = y_fixed + cr*float2fixed(1.40200f); + g = y_fixed - cr*float2fixed(0.71414f) - cb*float2fixed(0.34414f); + b = y_fixed + cb*float2fixed(1.77200f); + r >>= 16; + g >>= 16; + b >>= 16; + if ((unsigned) r > 255) { if (r < 0) r = 0; else r = 255; } + if ((unsigned) g > 255) { if (g < 0) g = 0; else g = 255; } + if ((unsigned) b > 255) { if (b < 0) b = 0; else b = 255; } + out[0] = (stbi_uc)r; + out[1] = (stbi_uc)g; + out[2] = (stbi_uc)b; + out[3] = 255; + out += step; + } +} + +#ifdef STBI_SIMD +static stbi_YCbCr_to_RGB_run stbi__YCbCr_installed = stbi__YCbCr_to_RGB_row; + +STBIDEF void stbi_install_YCbCr_to_RGB(stbi_YCbCr_to_RGB_run func) +{ + stbi__YCbCr_installed = func; +} +#endif + + +// clean up the temporary component buffers +static void stbi__cleanup_jpeg(stbi__jpeg *j) +{ + int i; + for (i=0; i < j->s->img_n; ++i) { + if (j->img_comp[i].raw_data) { + free(j->img_comp[i].raw_data); + j->img_comp[i].raw_data = NULL; + j->img_comp[i].data = NULL; + } + if (j->img_comp[i].linebuf) { + free(j->img_comp[i].linebuf); + j->img_comp[i].linebuf = NULL; + } + } +} + +typedef struct +{ + resample_row_func resample; + stbi_uc *line0,*line1; + int hs,vs; // expansion factor in each axis + int w_lores; // horizontal pixels pre-expansion + int ystep; // how far through vertical expansion we are + int ypos; // which pre-expansion row we're on +} stbi__resample; + +static stbi_uc *load_jpeg_image(stbi__jpeg *z, int *out_x, int *out_y, int *comp, int req_comp) +{ + int n, decode_n; + z->s->img_n = 0; // make stbi__cleanup_jpeg safe + + // validate req_comp + if (req_comp < 0 || req_comp > 4) return stbi__errpuc("bad req_comp", "Internal error"); + + // load a jpeg image from whichever source + if (!decode_jpeg_image(z)) { stbi__cleanup_jpeg(z); return NULL; } + + // determine actual number of components to generate + n = req_comp ? req_comp : z->s->img_n; + + if (z->s->img_n == 3 && n < 3) + decode_n = 1; + else + decode_n = z->s->img_n; + + // resample and color-convert + { + int k; + unsigned int i,j; + stbi_uc *output; + stbi_uc *coutput[4]; + + stbi__resample res_comp[4]; + + for (k=0; k < decode_n; ++k) { + stbi__resample *r = &res_comp[k]; + + // allocate line buffer big enough for upsampling off the edges + // with upsample factor of 4 + z->img_comp[k].linebuf = (stbi_uc *) stbi__malloc(z->s->img_x + 3); + if (!z->img_comp[k].linebuf) { stbi__cleanup_jpeg(z); return stbi__errpuc("outofmem", "Out of memory"); } + + r->hs = z->img_h_max / z->img_comp[k].h; + r->vs = z->img_v_max / z->img_comp[k].v; + r->ystep = r->vs >> 1; + r->w_lores = (z->s->img_x + r->hs-1) / r->hs; + r->ypos = 0; + r->line0 = r->line1 = z->img_comp[k].data; + + if (r->hs == 1 && r->vs == 1) r->resample = resample_row_1; + else if (r->hs == 1 && r->vs == 2) r->resample = stbi__resample_row_v_2; + else if (r->hs == 2 && r->vs == 1) r->resample = stbi__resample_row_h_2; + else if (r->hs == 2 && r->vs == 2) r->resample = stbi__resample_row_hv_2; + else r->resample = stbi__resample_row_generic; + } + + // can't error after this so, this is safe + output = (stbi_uc *) stbi__malloc(n * z->s->img_x * z->s->img_y + 1); + if (!output) { stbi__cleanup_jpeg(z); return stbi__errpuc("outofmem", "Out of memory"); } + + // now go ahead and resample + for (j=0; j < z->s->img_y; ++j) { + stbi_uc *out = output + n * z->s->img_x * j; + for (k=0; k < decode_n; ++k) { + stbi__resample *r = &res_comp[k]; + int y_bot = r->ystep >= (r->vs >> 1); + coutput[k] = r->resample(z->img_comp[k].linebuf, + y_bot ? r->line1 : r->line0, + y_bot ? r->line0 : r->line1, + r->w_lores, r->hs); + if (++r->ystep >= r->vs) { + r->ystep = 0; + r->line0 = r->line1; + if (++r->ypos < z->img_comp[k].y) + r->line1 += z->img_comp[k].w2; + } + } + if (n >= 3) { + stbi_uc *y = coutput[0]; + if (z->s->img_n == 3) { +#ifdef STBI_SIMD + stbi__YCbCr_installed(out, y, coutput[1], coutput[2], z->s->img_x, n); +#else + stbi__YCbCr_to_RGB_row(out, y, coutput[1], coutput[2], z->s->img_x, n); +#endif + } else + for (i=0; i < z->s->img_x; ++i) { + out[0] = out[1] = out[2] = y[i]; + out[3] = 255; // not used if n==3 + out += n; + } + } else { + stbi_uc *y = coutput[0]; + if (n == 1) + for (i=0; i < z->s->img_x; ++i) out[i] = y[i]; + else + for (i=0; i < z->s->img_x; ++i) *out++ = y[i], *out++ = 255; + } + } + stbi__cleanup_jpeg(z); + *out_x = z->s->img_x; + *out_y = z->s->img_y; + if (comp) *comp = z->s->img_n; // report original components, not output + return output; + } +} + +static unsigned char *stbi__jpeg_load(stbi__context *s, int *x, int *y, int *comp, int req_comp) +{ + stbi__jpeg j; + j.s = s; + return load_jpeg_image(&j, x,y,comp,req_comp); +} + +static int stbi__jpeg_test(stbi__context *s) +{ + int r; + stbi__jpeg j; + j.s = s; + r = decode_jpeg_header(&j, SCAN_type); + stbi__rewind(s); + return r; +} + +static int stbi__jpeg_info_raw(stbi__jpeg *j, int *x, int *y, int *comp) +{ + if (!decode_jpeg_header(j, SCAN_header)) { + stbi__rewind( j->s ); + return 0; + } + if (x) *x = j->s->img_x; + if (y) *y = j->s->img_y; + if (comp) *comp = j->s->img_n; + return 1; +} + +static int stbi__jpeg_info(stbi__context *s, int *x, int *y, int *comp) +{ + stbi__jpeg j; + j.s = s; + return stbi__jpeg_info_raw(&j, x, y, comp); +} + +// public domain zlib decode v0.2 Sean Barrett 2006-11-18 +// simple implementation +// - all input must be provided in an upfront buffer +// - all output is written to a single output buffer (can malloc/realloc) +// performance +// - fast huffman + +// fast-way is faster to check than jpeg huffman, but slow way is slower +#define STBI__ZFAST_BITS 9 // accelerate all cases in default tables +#define STBI__ZFAST_MASK ((1 << STBI__ZFAST_BITS) - 1) + +// zlib-style huffman encoding +// (jpegs packs from left, zlib from right, so can't share code) +typedef struct +{ + stbi__uint16 fast[1 << STBI__ZFAST_BITS]; + stbi__uint16 firstcode[16]; + int maxcode[17]; + stbi__uint16 firstsymbol[16]; + stbi_uc size[288]; + stbi__uint16 value[288]; +} stbi__zhuffman; + +stbi_inline static int stbi__bitreverse16(int n) +{ + n = ((n & 0xAAAA) >> 1) | ((n & 0x5555) << 1); + n = ((n & 0xCCCC) >> 2) | ((n & 0x3333) << 2); + n = ((n & 0xF0F0) >> 4) | ((n & 0x0F0F) << 4); + n = ((n & 0xFF00) >> 8) | ((n & 0x00FF) << 8); + return n; +} + +stbi_inline static int stbi__bit_reverse(int v, int bits) +{ + STBI_ASSERT(bits <= 16); + // to bit reverse n bits, reverse 16 and shift + // e.g. 11 bits, bit reverse and shift away 5 + return stbi__bitreverse16(v) >> (16-bits); +} + +static int stbi__zbuild_huffman(stbi__zhuffman *z, stbi_uc *sizelist, int num) +{ + int i,k=0; + int code, next_code[16], sizes[17]; + + // DEFLATE spec for generating codes + memset(sizes, 0, sizeof(sizes)); + memset(z->fast, 255, sizeof(z->fast)); + for (i=0; i < num; ++i) + ++sizes[sizelist[i]]; + sizes[0] = 0; + for (i=1; i < 16; ++i) + STBI_ASSERT(sizes[i] <= (1 << i)); + code = 0; + for (i=1; i < 16; ++i) { + next_code[i] = code; + z->firstcode[i] = (stbi__uint16) code; + z->firstsymbol[i] = (stbi__uint16) k; + code = (code + sizes[i]); + if (sizes[i]) + if (code-1 >= (1 << i)) return stbi__err("bad codelengths","Corrupt JPEG"); + z->maxcode[i] = code << (16-i); // preshift for inner loop + code <<= 1; + k += sizes[i]; + } + z->maxcode[16] = 0x10000; // sentinel + for (i=0; i < num; ++i) { + int s = sizelist[i]; + if (s) { + int c = next_code[s] - z->firstcode[s] + z->firstsymbol[s]; + z->size [c] = (stbi_uc ) s; + z->value[c] = (stbi__uint16) i; + if (s <= STBI__ZFAST_BITS) { + int k = stbi__bit_reverse(next_code[s],s); + while (k < (1 << STBI__ZFAST_BITS)) { + z->fast[k] = (stbi__uint16) c; + k += (1 << s); + } + } + ++next_code[s]; + } + } + return 1; +} + +// zlib-from-memory implementation for PNG reading +// because PNG allows splitting the zlib stream arbitrarily, +// and it's annoying structurally to have PNG call ZLIB call PNG, +// we require PNG read all the IDATs and combine them into a single +// memory buffer + +typedef struct +{ + stbi_uc *zbuffer, *zbuffer_end; + int num_bits; + stbi__uint32 code_buffer; + + char *zout; + char *zout_start; + char *zout_end; + int z_expandable; + + stbi__zhuffman z_length, z_distance; +} stbi__zbuf; + +stbi_inline static stbi_uc stbi__zget8(stbi__zbuf *z) +{ + if (z->zbuffer >= z->zbuffer_end) return 0; + return *z->zbuffer++; +} + +static void stbi__fill_bits(stbi__zbuf *z) +{ + do { + STBI_ASSERT(z->code_buffer < (1U << z->num_bits)); + z->code_buffer |= stbi__zget8(z) << z->num_bits; + z->num_bits += 8; + } while (z->num_bits <= 24); +} + +stbi_inline static unsigned int stbi__zreceive(stbi__zbuf *z, int n) +{ + unsigned int k; + if (z->num_bits < n) stbi__fill_bits(z); + k = z->code_buffer & ((1 << n) - 1); + z->code_buffer >>= n; + z->num_bits -= n; + return k; +} + +stbi_inline static int stbi__zhuffman_decode(stbi__zbuf *a, stbi__zhuffman *z) +{ + int b,s,k; + if (a->num_bits < 16) stbi__fill_bits(a); + b = z->fast[a->code_buffer & STBI__ZFAST_MASK]; + if (b < 0xffff) { + s = z->size[b]; + a->code_buffer >>= s; + a->num_bits -= s; + return z->value[b]; + } + + // not resolved by fast table, so compute it the slow way + // use jpeg approach, which requires MSbits at top + k = stbi__bit_reverse(a->code_buffer, 16); + for (s=STBI__ZFAST_BITS+1; ; ++s) + if (k < z->maxcode[s]) + break; + if (s == 16) return -1; // invalid code! + // code size is s, so: + b = (k >> (16-s)) - z->firstcode[s] + z->firstsymbol[s]; + STBI_ASSERT(z->size[b] == s); + a->code_buffer >>= s; + a->num_bits -= s; + return z->value[b]; +} + +static int stbi__zexpand(stbi__zbuf *z, int n) // need to make room for n bytes +{ + char *q; + int cur, limit; + if (!z->z_expandable) return stbi__err("output buffer limit","Corrupt PNG"); + cur = (int) (z->zout - z->zout_start); + limit = (int) (z->zout_end - z->zout_start); + while (cur + n > limit) + limit *= 2; + q = (char *) realloc(z->zout_start, limit); + if (q == NULL) return stbi__err("outofmem", "Out of memory"); + z->zout_start = q; + z->zout = q + cur; + z->zout_end = q + limit; + return 1; +} + +static int stbi__zlength_base[31] = { + 3,4,5,6,7,8,9,10,11,13, + 15,17,19,23,27,31,35,43,51,59, + 67,83,99,115,131,163,195,227,258,0,0 }; + +static int stbi__zlength_extra[31]= +{ 0,0,0,0,0,0,0,0,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5,0,0,0 }; + +static int stbi__zdist_base[32] = { 1,2,3,4,5,7,9,13,17,25,33,49,65,97,129,193, + 257,385,513,769,1025,1537,2049,3073,4097,6145,8193,12289,16385,24577,0,0}; + +static int stbi__zdist_extra[32] = +{ 0,0,0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13}; + +static int stbi__parse_huffman_block(stbi__zbuf *a) +{ + for(;;) { + int z = stbi__zhuffman_decode(a, &a->z_length); + if (z < 256) { + if (z < 0) return stbi__err("bad huffman code","Corrupt PNG"); // error in huffman codes + if (a->zout >= a->zout_end) if (!stbi__zexpand(a, 1)) return 0; + *a->zout++ = (char) z; + } else { + stbi_uc *p; + int len,dist; + if (z == 256) return 1; + z -= 257; + len = stbi__zlength_base[z]; + if (stbi__zlength_extra[z]) len += stbi__zreceive(a, stbi__zlength_extra[z]); + z = stbi__zhuffman_decode(a, &a->z_distance); + if (z < 0) return stbi__err("bad huffman code","Corrupt PNG"); + dist = stbi__zdist_base[z]; + if (stbi__zdist_extra[z]) dist += stbi__zreceive(a, stbi__zdist_extra[z]); + if (a->zout - a->zout_start < dist) return stbi__err("bad dist","Corrupt PNG"); + if (a->zout + len > a->zout_end) if (!stbi__zexpand(a, len)) return 0; + p = (stbi_uc *) (a->zout - dist); + while (len--) + *a->zout++ = *p++; + } + } +} + +static int stbi__compute_huffman_codes(stbi__zbuf *a) +{ + static stbi_uc length_dezigzag[19] = { 16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15 }; + stbi__zhuffman z_codelength; + stbi_uc lencodes[286+32+137];//padding for maximum single op + stbi_uc codelength_sizes[19]; + int i,n; + + int hlit = stbi__zreceive(a,5) + 257; + int hdist = stbi__zreceive(a,5) + 1; + int hclen = stbi__zreceive(a,4) + 4; + + memset(codelength_sizes, 0, sizeof(codelength_sizes)); + for (i=0; i < hclen; ++i) { + int s = stbi__zreceive(a,3); + codelength_sizes[length_dezigzag[i]] = (stbi_uc) s; + } + if (!stbi__zbuild_huffman(&z_codelength, codelength_sizes, 19)) return 0; + + n = 0; + while (n < hlit + hdist) { + int c = stbi__zhuffman_decode(a, &z_codelength); + STBI_ASSERT(c >= 0 && c < 19); + if (c < 16) + lencodes[n++] = (stbi_uc) c; + else if (c == 16) { + c = stbi__zreceive(a,2)+3; + memset(lencodes+n, lencodes[n-1], c); + n += c; + } else if (c == 17) { + c = stbi__zreceive(a,3)+3; + memset(lencodes+n, 0, c); + n += c; + } else { + STBI_ASSERT(c == 18); + c = stbi__zreceive(a,7)+11; + memset(lencodes+n, 0, c); + n += c; + } + } + if (n != hlit+hdist) return stbi__err("bad codelengths","Corrupt PNG"); + if (!stbi__zbuild_huffman(&a->z_length, lencodes, hlit)) return 0; + if (!stbi__zbuild_huffman(&a->z_distance, lencodes+hlit, hdist)) return 0; + return 1; +} + +static int stbi__parse_uncomperssed_block(stbi__zbuf *a) +{ + stbi_uc header[4]; + int len,nlen,k; + if (a->num_bits & 7) + stbi__zreceive(a, a->num_bits & 7); // discard + // drain the bit-packed data into header + k = 0; + while (a->num_bits > 0) { + header[k++] = (stbi_uc) (a->code_buffer & 255); // suppress MSVC run-time check + a->code_buffer >>= 8; + a->num_bits -= 8; + } + STBI_ASSERT(a->num_bits == 0); + // now fill header the normal way + while (k < 4) + header[k++] = stbi__zget8(a); + len = header[1] * 256 + header[0]; + nlen = header[3] * 256 + header[2]; + if (nlen != (len ^ 0xffff)) return stbi__err("zlib corrupt","Corrupt PNG"); + if (a->zbuffer + len > a->zbuffer_end) return stbi__err("read past buffer","Corrupt PNG"); + if (a->zout + len > a->zout_end) + if (!stbi__zexpand(a, len)) return 0; + memcpy(a->zout, a->zbuffer, len); + a->zbuffer += len; + a->zout += len; + return 1; +} + +static int stbi__parse_zlib_header(stbi__zbuf *a) +{ + int cmf = stbi__zget8(a); + int cm = cmf & 15; + /* int cinfo = cmf >> 4; */ + int flg = stbi__zget8(a); + if ((cmf*256+flg) % 31 != 0) return stbi__err("bad zlib header","Corrupt PNG"); // zlib spec + if (flg & 32) return stbi__err("no preset dict","Corrupt PNG"); // preset dictionary not allowed in png + if (cm != 8) return stbi__err("bad compression","Corrupt PNG"); // DEFLATE required for png + // window = 1 << (8 + cinfo)... but who cares, we fully buffer output + return 1; +} + +// @TODO: should statically initialize these for optimal thread safety +static stbi_uc stbi__zdefault_length[288], stbi__zdefault_distance[32]; +static void stbi__init_zdefaults(void) +{ + int i; // use <= to match clearly with spec + for (i=0; i <= 143; ++i) stbi__zdefault_length[i] = 8; + for ( ; i <= 255; ++i) stbi__zdefault_length[i] = 9; + for ( ; i <= 279; ++i) stbi__zdefault_length[i] = 7; + for ( ; i <= 287; ++i) stbi__zdefault_length[i] = 8; + + for (i=0; i <= 31; ++i) stbi__zdefault_distance[i] = 5; +} + +static int stbi__parse_zlib(stbi__zbuf *a, int parse_header) +{ + int final, type; + if (parse_header) + if (!stbi__parse_zlib_header(a)) return 0; + a->num_bits = 0; + a->code_buffer = 0; + do { + final = stbi__zreceive(a,1); + type = stbi__zreceive(a,2); + if (type == 0) { + if (!stbi__parse_uncomperssed_block(a)) return 0; + } else if (type == 3) { + return 0; + } else { + if (type == 1) { + // use fixed code lengths + if (!stbi__zdefault_distance[31]) stbi__init_zdefaults(); + if (!stbi__zbuild_huffman(&a->z_length , stbi__zdefault_length , 288)) return 0; + if (!stbi__zbuild_huffman(&a->z_distance, stbi__zdefault_distance, 32)) return 0; + } else { + if (!stbi__compute_huffman_codes(a)) return 0; + } + if (!stbi__parse_huffman_block(a)) return 0; + } + } while (!final); + return 1; +} + +static int stbi__do_zlib(stbi__zbuf *a, char *obuf, int olen, int exp, int parse_header) +{ + a->zout_start = obuf; + a->zout = obuf; + a->zout_end = obuf + olen; + a->z_expandable = exp; + + return stbi__parse_zlib(a, parse_header); +} + +STBIDEF char *stbi_zlib_decode_malloc_guesssize(const char *buffer, int len, int initial_size, int *outlen) +{ + stbi__zbuf a; + char *p = (char *) stbi__malloc(initial_size); + if (p == NULL) return NULL; + a.zbuffer = (stbi_uc *) buffer; + a.zbuffer_end = (stbi_uc *) buffer + len; + if (stbi__do_zlib(&a, p, initial_size, 1, 1)) { + if (outlen) *outlen = (int) (a.zout - a.zout_start); + return a.zout_start; + } else { + free(a.zout_start); + return NULL; + } +} + +STBIDEF char *stbi_zlib_decode_malloc(char const *buffer, int len, int *outlen) +{ + return stbi_zlib_decode_malloc_guesssize(buffer, len, 16384, outlen); +} + +STBIDEF char *stbi_zlib_decode_malloc_guesssize_headerflag(const char *buffer, int len, int initial_size, int *outlen, int parse_header) +{ + stbi__zbuf a; + char *p = (char *) stbi__malloc(initial_size); + if (p == NULL) return NULL; + a.zbuffer = (stbi_uc *) buffer; + a.zbuffer_end = (stbi_uc *) buffer + len; + if (stbi__do_zlib(&a, p, initial_size, 1, parse_header)) { + if (outlen) *outlen = (int) (a.zout - a.zout_start); + return a.zout_start; + } else { + free(a.zout_start); + return NULL; + } +} + +STBIDEF int stbi_zlib_decode_buffer(char *obuffer, int olen, char const *ibuffer, int ilen) +{ + stbi__zbuf a; + a.zbuffer = (stbi_uc *) ibuffer; + a.zbuffer_end = (stbi_uc *) ibuffer + ilen; + if (stbi__do_zlib(&a, obuffer, olen, 0, 1)) + return (int) (a.zout - a.zout_start); + else + return -1; +} + +STBIDEF char *stbi_zlib_decode_noheader_malloc(char const *buffer, int len, int *outlen) +{ + stbi__zbuf a; + char *p = (char *) stbi__malloc(16384); + if (p == NULL) return NULL; + a.zbuffer = (stbi_uc *) buffer; + a.zbuffer_end = (stbi_uc *) buffer+len; + if (stbi__do_zlib(&a, p, 16384, 1, 0)) { + if (outlen) *outlen = (int) (a.zout - a.zout_start); + return a.zout_start; + } else { + free(a.zout_start); + return NULL; + } +} + +STBIDEF int stbi_zlib_decode_noheader_buffer(char *obuffer, int olen, const char *ibuffer, int ilen) +{ + stbi__zbuf a; + a.zbuffer = (stbi_uc *) ibuffer; + a.zbuffer_end = (stbi_uc *) ibuffer + ilen; + if (stbi__do_zlib(&a, obuffer, olen, 0, 0)) + return (int) (a.zout - a.zout_start); + else + return -1; +} + +// public domain "baseline" PNG decoder v0.10 Sean Barrett 2006-11-18 +// simple implementation +// - only 8-bit samples +// - no CRC checking +// - allocates lots of intermediate memory +// - avoids problem of streaming data between subsystems +// - avoids explicit window management +// performance +// - uses stb_zlib, a PD zlib implementation with fast huffman decoding + + +typedef struct +{ + stbi__uint32 length; + stbi__uint32 type; +} stbi__pngchunk; + +#define PNG_TYPE(a,b,c,d) (((a) << 24) + ((b) << 16) + ((c) << 8) + (d)) + +static stbi__pngchunk stbi__get_chunk_header(stbi__context *s) +{ + stbi__pngchunk c; + c.length = stbi__get32be(s); + c.type = stbi__get32be(s); + return c; +} + +static int stbi__check_png_header(stbi__context *s) +{ + static stbi_uc png_sig[8] = { 137,80,78,71,13,10,26,10 }; + int i; + for (i=0; i < 8; ++i) + if (stbi__get8(s) != png_sig[i]) return stbi__err("bad png sig","Not a PNG"); + return 1; +} + +typedef struct +{ + stbi__context *s; + stbi_uc *idata, *expanded, *out; +} stbi__png; + + +enum { + STBI__F_none=0, STBI__F_sub=1, STBI__F_up=2, STBI__F_avg=3, STBI__F_paeth=4, + STBI__F_avg_first, STBI__F_paeth_first +}; + +static stbi_uc first_row_filter[5] = +{ + STBI__F_none, STBI__F_sub, STBI__F_none, STBI__F_avg_first, STBI__F_paeth_first +}; + +static int stbi__paeth(int a, int b, int c) +{ + int p = a + b - c; + int pa = abs(p-a); + int pb = abs(p-b); + int pc = abs(p-c); + if (pa <= pb && pa <= pc) return a; + if (pb <= pc) return b; + return c; +} + +#define STBI__BYTECAST(x) ((stbi_uc) ((x) & 255)) // truncate int to byte without warnings + +// create the png data from post-deflated data +static int stbi__create_png_image_raw(stbi__png *a, stbi_uc *raw, stbi__uint32 raw_len, int out_n, stbi__uint32 x, stbi__uint32 y) +{ + stbi__context *s = a->s; + stbi__uint32 i,j,stride = x*out_n; + int k; + int img_n = s->img_n; // copy it into a local for later + STBI_ASSERT(out_n == s->img_n || out_n == s->img_n+1); + a->out = (stbi_uc *) stbi__malloc(x * y * out_n); + if (!a->out) return stbi__err("outofmem", "Out of memory"); + if (s->img_x == x && s->img_y == y) { + if (raw_len != (img_n * x + 1) * y) return stbi__err("not enough pixels","Corrupt PNG"); + } else { // interlaced: + if (raw_len < (img_n * x + 1) * y) return stbi__err("not enough pixels","Corrupt PNG"); + } + for (j=0; j < y; ++j) { + stbi_uc *cur = a->out + stride*j; + stbi_uc *prior = cur - stride; + int filter = *raw++; + if (filter > 4) return stbi__err("invalid filter","Corrupt PNG"); + // if first row, use special filter that doesn't sample previous row + if (j == 0) filter = first_row_filter[filter]; + // handle first pixel explicitly + for (k=0; k < img_n; ++k) { + switch (filter) { + case STBI__F_none : cur[k] = raw[k]; break; + case STBI__F_sub : cur[k] = raw[k]; break; + case STBI__F_up : cur[k] = STBI__BYTECAST(raw[k] + prior[k]); break; + case STBI__F_avg : cur[k] = STBI__BYTECAST(raw[k] + (prior[k]>>1)); break; + case STBI__F_paeth : cur[k] = STBI__BYTECAST(raw[k] + stbi__paeth(0,prior[k],0)); break; + case STBI__F_avg_first : cur[k] = raw[k]; break; + case STBI__F_paeth_first: cur[k] = raw[k]; break; + } + } + if (img_n != out_n) cur[img_n] = 255; + raw += img_n; + cur += out_n; + prior += out_n; + // this is a little gross, so that we don't switch per-pixel or per-component + if (img_n == out_n) { +#define CASE(f) \ +case f: \ +for (i=x-1; i >= 1; --i, raw+=img_n,cur+=img_n,prior+=img_n) \ +for (k=0; k < img_n; ++k) + switch (filter) { + CASE(STBI__F_none) cur[k] = raw[k]; break; + CASE(STBI__F_sub) cur[k] = STBI__BYTECAST(raw[k] + cur[k-img_n]); break; + CASE(STBI__F_up) cur[k] = STBI__BYTECAST(raw[k] + prior[k]); break; + CASE(STBI__F_avg) cur[k] = STBI__BYTECAST(raw[k] + ((prior[k] + cur[k-img_n])>>1)); break; + CASE(STBI__F_paeth) cur[k] = STBI__BYTECAST(raw[k] + stbi__paeth(cur[k-img_n],prior[k],prior[k-img_n])); break; + CASE(STBI__F_avg_first) cur[k] = STBI__BYTECAST(raw[k] + (cur[k-img_n] >> 1)); break; + CASE(STBI__F_paeth_first) cur[k] = STBI__BYTECAST(raw[k] + stbi__paeth(cur[k-img_n],0,0)); break; + } +#undef CASE + } else { + STBI_ASSERT(img_n+1 == out_n); +#define CASE(f) \ +case f: \ +for (i=x-1; i >= 1; --i, cur[img_n]=255,raw+=img_n,cur+=out_n,prior+=out_n) \ +for (k=0; k < img_n; ++k) + switch (filter) { + CASE(STBI__F_none) cur[k] = raw[k]; break; + CASE(STBI__F_sub) cur[k] = STBI__BYTECAST(raw[k] + cur[k-out_n]); break; + CASE(STBI__F_up) cur[k] = STBI__BYTECAST(raw[k] + prior[k]); break; + CASE(STBI__F_avg) cur[k] = STBI__BYTECAST(raw[k] + ((prior[k] + cur[k-out_n])>>1)); break; + CASE(STBI__F_paeth) cur[k] = STBI__BYTECAST(raw[k] + stbi__paeth(cur[k-out_n],prior[k],prior[k-out_n])); break; + CASE(STBI__F_avg_first) cur[k] = STBI__BYTECAST(raw[k] + (cur[k-out_n] >> 1)); break; + CASE(STBI__F_paeth_first) cur[k] = STBI__BYTECAST(raw[k] + stbi__paeth(cur[k-out_n],0,0)); break; + } +#undef CASE + } + } + return 1; +} + +static int stbi__create_png_image(stbi__png *a, stbi_uc *raw, stbi__uint32 raw_len, int out_n, int interlaced) +{ + stbi_uc *final; + int p; + if (!interlaced) + return stbi__create_png_image_raw(a, raw, raw_len, out_n, a->s->img_x, a->s->img_y); + + // de-interlacing + final = (stbi_uc *) stbi__malloc(a->s->img_x * a->s->img_y * out_n); + for (p=0; p < 7; ++p) { + int xorig[] = { 0,4,0,2,0,1,0 }; + int yorig[] = { 0,0,4,0,2,0,1 }; + int xspc[] = { 8,8,4,4,2,2,1 }; + int yspc[] = { 8,8,8,4,4,2,2 }; + int i,j,x,y; + // pass1_x[4] = 0, pass1_x[5] = 1, pass1_x[12] = 1 + x = (a->s->img_x - xorig[p] + xspc[p]-1) / xspc[p]; + y = (a->s->img_y - yorig[p] + yspc[p]-1) / yspc[p]; + if (x && y) { + if (!stbi__create_png_image_raw(a, raw, raw_len, out_n, x, y)) { + free(final); + return 0; + } + for (j=0; j < y; ++j) + for (i=0; i < x; ++i) + memcpy(final + (j*yspc[p]+yorig[p])*a->s->img_x*out_n + (i*xspc[p]+xorig[p])*out_n, + a->out + (j*x+i)*out_n, out_n); + free(a->out); + raw += (x*out_n+1)*y; + raw_len -= (x*out_n+1)*y; + } + } + a->out = final; + + return 1; +} + +static int stbi__compute_transparency(stbi__png *z, stbi_uc tc[3], int out_n) +{ + stbi__context *s = z->s; + stbi__uint32 i, pixel_count = s->img_x * s->img_y; + stbi_uc *p = z->out; + + // compute color-based transparency, assuming we've + // already got 255 as the alpha value in the output + STBI_ASSERT(out_n == 2 || out_n == 4); + + if (out_n == 2) { + for (i=0; i < pixel_count; ++i) { + p[1] = (p[0] == tc[0] ? 0 : 255); + p += 2; + } + } else { + for (i=0; i < pixel_count; ++i) { + if (p[0] == tc[0] && p[1] == tc[1] && p[2] == tc[2]) + p[3] = 0; + p += 4; + } + } + return 1; +} + +static int stbi__expand_png_palette(stbi__png *a, stbi_uc *palette, int len, int pal_img_n) +{ + stbi__uint32 i, pixel_count = a->s->img_x * a->s->img_y; + stbi_uc *p, *temp_out, *orig = a->out; + + p = (stbi_uc *) stbi__malloc(pixel_count * pal_img_n); + if (p == NULL) return stbi__err("outofmem", "Out of memory"); + + // between here and free(out) below, exitting would leak + temp_out = p; + + if (pal_img_n == 3) { + for (i=0; i < pixel_count; ++i) { + int n = orig[i]*4; + p[0] = palette[n ]; + p[1] = palette[n+1]; + p[2] = palette[n+2]; + p += 3; + } + } else { + for (i=0; i < pixel_count; ++i) { + int n = orig[i]*4; + p[0] = palette[n ]; + p[1] = palette[n+1]; + p[2] = palette[n+2]; + p[3] = palette[n+3]; + p += 4; + } + } + free(a->out); + a->out = temp_out; + + STBI_NOTUSED(len); + + return 1; +} + +static int stbi__unpremultiply_on_load = 0; +static int stbi__de_iphone_flag = 0; + +STBIDEF void stbi_set_unpremultiply_on_load(int flag_true_if_should_unpremultiply) +{ + stbi__unpremultiply_on_load = flag_true_if_should_unpremultiply; +} + +STBIDEF void stbi_convert_iphone_png_to_rgb(int flag_true_if_should_convert) +{ + stbi__de_iphone_flag = flag_true_if_should_convert; +} + +static void stbi__de_iphone(stbi__png *z) +{ + stbi__context *s = z->s; + stbi__uint32 i, pixel_count = s->img_x * s->img_y; + stbi_uc *p = z->out; + + if (s->img_out_n == 3) { // convert bgr to rgb + for (i=0; i < pixel_count; ++i) { + stbi_uc t = p[0]; + p[0] = p[2]; + p[2] = t; + p += 3; + } + } else { + STBI_ASSERT(s->img_out_n == 4); + if (stbi__unpremultiply_on_load) { + // convert bgr to rgb and unpremultiply + for (i=0; i < pixel_count; ++i) { + stbi_uc a = p[3]; + stbi_uc t = p[0]; + if (a) { + p[0] = p[2] * 255 / a; + p[1] = p[1] * 255 / a; + p[2] = t * 255 / a; + } else { + p[0] = p[2]; + p[2] = t; + } + p += 4; + } + } else { + // convert bgr to rgb + for (i=0; i < pixel_count; ++i) { + stbi_uc t = p[0]; + p[0] = p[2]; + p[2] = t; + p += 4; + } + } + } +} + +static int stbi__parse_png_file(stbi__png *z, int scan, int req_comp) +{ + stbi_uc palette[1024], pal_img_n=0; + stbi_uc has_trans=0, tc[3]; + stbi__uint32 ioff=0, idata_limit=0, i, pal_len=0; + int first=1,k,interlace=0, is_iphone=0; + stbi__context *s = z->s; + + z->expanded = NULL; + z->idata = NULL; + z->out = NULL; + + if (!stbi__check_png_header(s)) return 0; + + if (scan == SCAN_type) return 1; + + for (;;) { + stbi__pngchunk c = stbi__get_chunk_header(s); + switch (c.type) { + case PNG_TYPE('C','g','B','I'): + is_iphone = 1; + stbi__skip(s, c.length); + break; + case PNG_TYPE('I','H','D','R'): { + int depth,color,comp,filter; + if (!first) return stbi__err("multiple IHDR","Corrupt PNG"); + first = 0; + if (c.length != 13) return stbi__err("bad IHDR len","Corrupt PNG"); + s->img_x = stbi__get32be(s); if (s->img_x > (1 << 24)) return stbi__err("too large","Very large image (corrupt?)"); + s->img_y = stbi__get32be(s); if (s->img_y > (1 << 24)) return stbi__err("too large","Very large image (corrupt?)"); + depth = stbi__get8(s); if (depth != 8) return stbi__err("8bit only","PNG not supported: 8-bit only"); + color = stbi__get8(s); if (color > 6) return stbi__err("bad ctype","Corrupt PNG"); + if (color == 3) pal_img_n = 3; else if (color & 1) return stbi__err("bad ctype","Corrupt PNG"); + comp = stbi__get8(s); if (comp) return stbi__err("bad comp method","Corrupt PNG"); + filter= stbi__get8(s); if (filter) return stbi__err("bad filter method","Corrupt PNG"); + interlace = stbi__get8(s); if (interlace>1) return stbi__err("bad interlace method","Corrupt PNG"); + if (!s->img_x || !s->img_y) return stbi__err("0-pixel image","Corrupt PNG"); + if (!pal_img_n) { + s->img_n = (color & 2 ? 3 : 1) + (color & 4 ? 1 : 0); + if ((1 << 30) / s->img_x / s->img_n < s->img_y) return stbi__err("too large", "Image too large to decode"); + if (scan == SCAN_header) return 1; + } else { + // if paletted, then pal_n is our final components, and + // img_n is # components to decompress/filter. + s->img_n = 1; + if ((1 << 30) / s->img_x / 4 < s->img_y) return stbi__err("too large","Corrupt PNG"); + // if SCAN_header, have to scan to see if we have a tRNS + } + break; + } + + case PNG_TYPE('P','L','T','E'): { + if (first) return stbi__err("first not IHDR", "Corrupt PNG"); + if (c.length > 256*3) return stbi__err("invalid PLTE","Corrupt PNG"); + pal_len = c.length / 3; + if (pal_len * 3 != c.length) return stbi__err("invalid PLTE","Corrupt PNG"); + for (i=0; i < pal_len; ++i) { + palette[i*4+0] = stbi__get8(s); + palette[i*4+1] = stbi__get8(s); + palette[i*4+2] = stbi__get8(s); + palette[i*4+3] = 255; + } + break; + } + + case PNG_TYPE('t','R','N','S'): { + if (first) return stbi__err("first not IHDR", "Corrupt PNG"); + if (z->idata) return stbi__err("tRNS after IDAT","Corrupt PNG"); + if (pal_img_n) { + if (scan == SCAN_header) { s->img_n = 4; return 1; } + if (pal_len == 0) return stbi__err("tRNS before PLTE","Corrupt PNG"); + if (c.length > pal_len) return stbi__err("bad tRNS len","Corrupt PNG"); + pal_img_n = 4; + for (i=0; i < c.length; ++i) + palette[i*4+3] = stbi__get8(s); + } else { + if (!(s->img_n & 1)) return stbi__err("tRNS with alpha","Corrupt PNG"); + if (c.length != (stbi__uint32) s->img_n*2) return stbi__err("bad tRNS len","Corrupt PNG"); + has_trans = 1; + for (k=0; k < s->img_n; ++k) + tc[k] = (stbi_uc) (stbi__get16be(s) & 255); // non 8-bit images will be larger + } + break; + } + + case PNG_TYPE('I','D','A','T'): { + if (first) return stbi__err("first not IHDR", "Corrupt PNG"); + if (pal_img_n && !pal_len) return stbi__err("no PLTE","Corrupt PNG"); + if (scan == SCAN_header) { s->img_n = pal_img_n; return 1; } + if (ioff + c.length > idata_limit) { + stbi_uc *p; + if (idata_limit == 0) idata_limit = c.length > 4096 ? c.length : 4096; + while (ioff + c.length > idata_limit) + idata_limit *= 2; + p = (stbi_uc *) realloc(z->idata, idata_limit); if (p == NULL) return stbi__err("outofmem", "Out of memory"); + z->idata = p; + } + if (!stbi__getn(s, z->idata+ioff,c.length)) return stbi__err("outofdata","Corrupt PNG"); + ioff += c.length; + break; + } + + case PNG_TYPE('I','E','N','D'): { + stbi__uint32 raw_len; + if (first) return stbi__err("first not IHDR", "Corrupt PNG"); + if (scan != SCAN_load) return 1; + if (z->idata == NULL) return stbi__err("no IDAT","Corrupt PNG"); + z->expanded = (stbi_uc *) stbi_zlib_decode_malloc_guesssize_headerflag((char *) z->idata, ioff, 16384, (int *) &raw_len, !is_iphone); + if (z->expanded == NULL) return 0; // zlib should set error + free(z->idata); z->idata = NULL; + if ((req_comp == s->img_n+1 && req_comp != 3 && !pal_img_n) || has_trans) + s->img_out_n = s->img_n+1; + else + s->img_out_n = s->img_n; + if (!stbi__create_png_image(z, z->expanded, raw_len, s->img_out_n, interlace)) return 0; + if (has_trans) + if (!stbi__compute_transparency(z, tc, s->img_out_n)) return 0; + if (is_iphone && stbi__de_iphone_flag && s->img_out_n > 2) + stbi__de_iphone(z); + if (pal_img_n) { + // pal_img_n == 3 or 4 + s->img_n = pal_img_n; // record the actual colors we had + s->img_out_n = pal_img_n; + if (req_comp >= 3) s->img_out_n = req_comp; + if (!stbi__expand_png_palette(z, palette, pal_len, s->img_out_n)) + return 0; + } + free(z->expanded); z->expanded = NULL; + return 1; + } + + default: + // if critical, fail + if (first) return stbi__err("first not IHDR", "Corrupt PNG"); + if ((c.type & (1 << 29)) == 0) { +#ifndef STBI_NO_FAILURE_STRINGS + // not threadsafe + static char invalid_chunk[] = "XXXX PNG chunk not known"; + invalid_chunk[0] = STBI__BYTECAST(c.type >> 24); + invalid_chunk[1] = STBI__BYTECAST(c.type >> 16); + invalid_chunk[2] = STBI__BYTECAST(c.type >> 8); + invalid_chunk[3] = STBI__BYTECAST(c.type >> 0); +#endif + return stbi__err(invalid_chunk, "PNG not supported: unknown PNG chunk type"); + } + stbi__skip(s, c.length); + break; + } + // end of PNG chunk, read and skip CRC + stbi__get32be(s); + } +} + +static unsigned char *stbi__do_png(stbi__png *p, int *x, int *y, int *n, int req_comp) +{ + unsigned char *result=NULL; + if (req_comp < 0 || req_comp > 4) return stbi__errpuc("bad req_comp", "Internal error"); + if (stbi__parse_png_file(p, SCAN_load, req_comp)) { + result = p->out; + p->out = NULL; + if (req_comp && req_comp != p->s->img_out_n) { + result = stbi__convert_format(result, p->s->img_out_n, req_comp, p->s->img_x, p->s->img_y); + p->s->img_out_n = req_comp; + if (result == NULL) return result; + } + *x = p->s->img_x; + *y = p->s->img_y; + if (n) *n = p->s->img_out_n; + } + free(p->out); p->out = NULL; + free(p->expanded); p->expanded = NULL; + free(p->idata); p->idata = NULL; + + return result; +} + +static unsigned char *stbi__png_load(stbi__context *s, int *x, int *y, int *comp, int req_comp) +{ + stbi__png p; + p.s = s; + return stbi__do_png(&p, x,y,comp,req_comp); +} + +static int stbi__png_test(stbi__context *s) +{ + int r; + r = stbi__check_png_header(s); + stbi__rewind(s); + return r; +} + +static int stbi__png_info_raw(stbi__png *p, int *x, int *y, int *comp) +{ + if (!stbi__parse_png_file(p, SCAN_header, 0)) { + stbi__rewind( p->s ); + return 0; + } + if (x) *x = p->s->img_x; + if (y) *y = p->s->img_y; + if (comp) *comp = p->s->img_n; + return 1; +} + +static int stbi__png_info(stbi__context *s, int *x, int *y, int *comp) +{ + stbi__png p; + p.s = s; + return stbi__png_info_raw(&p, x, y, comp); +} + +// Microsoft/Windows BMP image +static int stbi__bmp_test_raw(stbi__context *s) +{ + int r; + int sz; + if (stbi__get8(s) != 'B') return 0; + if (stbi__get8(s) != 'M') return 0; + stbi__get32le(s); // discard filesize + stbi__get16le(s); // discard reserved + stbi__get16le(s); // discard reserved + stbi__get32le(s); // discard data offset + sz = stbi__get32le(s); + r = (sz == 12 || sz == 40 || sz == 56 || sz == 108 || sz == 124); + return r; +} + +static int stbi__bmp_test(stbi__context *s) +{ + int r = stbi__bmp_test_raw(s); + stbi__rewind(s); + return r; +} + + +// returns 0..31 for the highest set bit +static int stbi__high_bit(unsigned int z) +{ + int n=0; + if (z == 0) return -1; + if (z >= 0x10000) n += 16, z >>= 16; + if (z >= 0x00100) n += 8, z >>= 8; + if (z >= 0x00010) n += 4, z >>= 4; + if (z >= 0x00004) n += 2, z >>= 2; + if (z >= 0x00002) n += 1, z >>= 1; + return n; +} + +static int stbi__bitcount(unsigned int a) +{ + a = (a & 0x55555555) + ((a >> 1) & 0x55555555); // max 2 + a = (a & 0x33333333) + ((a >> 2) & 0x33333333); // max 4 + a = (a + (a >> 4)) & 0x0f0f0f0f; // max 8 per 4, now 8 bits + a = (a + (a >> 8)); // max 16 per 8 bits + a = (a + (a >> 16)); // max 32 per 8 bits + return a & 0xff; +} + +static int stbi__shiftsigned(int v, int shift, int bits) +{ + int result; + int z=0; + + if (shift < 0) v <<= -shift; + else v >>= shift; + result = v; + + z = bits; + while (z < 8) { + result += v >> z; + z += bits; + } + return result; +} + +static stbi_uc *stbi__bmp_load(stbi__context *s, int *x, int *y, int *comp, int req_comp) +{ + stbi_uc *out; + unsigned int mr=0,mg=0,mb=0,ma=0, fake_a=0; + stbi_uc pal[256][4]; + int psize=0,i,j,compress=0,width; + int bpp, flip_vertically, pad, target, offset, hsz; + if (stbi__get8(s) != 'B' || stbi__get8(s) != 'M') return stbi__errpuc("not BMP", "Corrupt BMP"); + stbi__get32le(s); // discard filesize + stbi__get16le(s); // discard reserved + stbi__get16le(s); // discard reserved + offset = stbi__get32le(s); + hsz = stbi__get32le(s); + if (hsz != 12 && hsz != 40 && hsz != 56 && hsz != 108 && hsz != 124) return stbi__errpuc("unknown BMP", "BMP type not supported: unknown"); + if (hsz == 12) { + s->img_x = stbi__get16le(s); + s->img_y = stbi__get16le(s); + } else { + s->img_x = stbi__get32le(s); + s->img_y = stbi__get32le(s); + } + if (stbi__get16le(s) != 1) return stbi__errpuc("bad BMP", "bad BMP"); + bpp = stbi__get16le(s); + if (bpp == 1) return stbi__errpuc("monochrome", "BMP type not supported: 1-bit"); + flip_vertically = ((int) s->img_y) > 0; + s->img_y = abs((int) s->img_y); + if (hsz == 12) { + if (bpp < 24) + psize = (offset - 14 - 24) / 3; + } else { + compress = stbi__get32le(s); + if (compress == 1 || compress == 2) return stbi__errpuc("BMP RLE", "BMP type not supported: RLE"); + stbi__get32le(s); // discard sizeof + stbi__get32le(s); // discard hres + stbi__get32le(s); // discard vres + stbi__get32le(s); // discard colorsused + stbi__get32le(s); // discard max important + if (hsz == 40 || hsz == 56) { + if (hsz == 56) { + stbi__get32le(s); + stbi__get32le(s); + stbi__get32le(s); + stbi__get32le(s); + } + if (bpp == 16 || bpp == 32) { + mr = mg = mb = 0; + if (compress == 0) { + if (bpp == 32) { + mr = 0xffu << 16; + mg = 0xffu << 8; + mb = 0xffu << 0; + ma = 0xffu << 24; + fake_a = 1; // @TODO: check for cases like alpha value is all 0 and switch it to 255 + STBI_NOTUSED(fake_a); + } else { + mr = 31u << 10; + mg = 31u << 5; + mb = 31u << 0; + } + } else if (compress == 3) { + mr = stbi__get32le(s); + mg = stbi__get32le(s); + mb = stbi__get32le(s); + // not documented, but generated by photoshop and handled by mspaint + if (mr == mg && mg == mb) { + // ?!?!? + return stbi__errpuc("bad BMP", "bad BMP"); + } + } else + return stbi__errpuc("bad BMP", "bad BMP"); + } + } else { + STBI_ASSERT(hsz == 108 || hsz == 124); + mr = stbi__get32le(s); + mg = stbi__get32le(s); + mb = stbi__get32le(s); + ma = stbi__get32le(s); + stbi__get32le(s); // discard color space + for (i=0; i < 12; ++i) + stbi__get32le(s); // discard color space parameters + if (hsz == 124) { + stbi__get32le(s); // discard rendering intent + stbi__get32le(s); // discard offset of profile data + stbi__get32le(s); // discard size of profile data + stbi__get32le(s); // discard reserved + } + } + if (bpp < 16) + psize = (offset - 14 - hsz) >> 2; + } + s->img_n = ma ? 4 : 3; + if (req_comp && req_comp >= 3) // we can directly decode 3 or 4 + target = req_comp; + else + target = s->img_n; // if they want monochrome, we'll post-convert + out = (stbi_uc *) stbi__malloc(target * s->img_x * s->img_y); + if (!out) return stbi__errpuc("outofmem", "Out of memory"); + if (bpp < 16) { + int z=0; + if (psize == 0 || psize > 256) { free(out); return stbi__errpuc("invalid", "Corrupt BMP"); } + for (i=0; i < psize; ++i) { + pal[i][2] = stbi__get8(s); + pal[i][1] = stbi__get8(s); + pal[i][0] = stbi__get8(s); + if (hsz != 12) stbi__get8(s); + pal[i][3] = 255; + } + stbi__skip(s, offset - 14 - hsz - psize * (hsz == 12 ? 3 : 4)); + if (bpp == 4) width = (s->img_x + 1) >> 1; + else if (bpp == 8) width = s->img_x; + else { free(out); return stbi__errpuc("bad bpp", "Corrupt BMP"); } + pad = (-width)&3; + for (j=0; j < (int) s->img_y; ++j) { + for (i=0; i < (int) s->img_x; i += 2) { + int v=stbi__get8(s),v2=0; + if (bpp == 4) { + v2 = v & 15; + v >>= 4; + } + out[z++] = pal[v][0]; + out[z++] = pal[v][1]; + out[z++] = pal[v][2]; + if (target == 4) out[z++] = 255; + if (i+1 == (int) s->img_x) break; + v = (bpp == 8) ? stbi__get8(s) : v2; + out[z++] = pal[v][0]; + out[z++] = pal[v][1]; + out[z++] = pal[v][2]; + if (target == 4) out[z++] = 255; + } + stbi__skip(s, pad); + } + } else { + int rshift=0,gshift=0,bshift=0,ashift=0,rcount=0,gcount=0,bcount=0,acount=0; + int z = 0; + int easy=0; + stbi__skip(s, offset - 14 - hsz); + if (bpp == 24) width = 3 * s->img_x; + else if (bpp == 16) width = 2*s->img_x; + else /* bpp = 32 and pad = 0 */ width=0; + pad = (-width) & 3; + if (bpp == 24) { + easy = 1; + } else if (bpp == 32) { + if (mb == 0xff && mg == 0xff00 && mr == 0x00ff0000 && ma == 0xff000000) + easy = 2; + } + if (!easy) { + if (!mr || !mg || !mb) { free(out); return stbi__errpuc("bad masks", "Corrupt BMP"); } + // right shift amt to put high bit in position #7 + rshift = stbi__high_bit(mr)-7; rcount = stbi__bitcount(mr); + gshift = stbi__high_bit(mg)-7; gcount = stbi__bitcount(mg); + bshift = stbi__high_bit(mb)-7; bcount = stbi__bitcount(mb); + ashift = stbi__high_bit(ma)-7; acount = stbi__bitcount(ma); + } + for (j=0; j < (int) s->img_y; ++j) { + if (easy) { + for (i=0; i < (int) s->img_x; ++i) { + unsigned char a; + out[z+2] = stbi__get8(s); + out[z+1] = stbi__get8(s); + out[z+0] = stbi__get8(s); + z += 3; + a = (easy == 2 ? stbi__get8(s) : 255); + if (target == 4) out[z++] = a; + } + } else { + for (i=0; i < (int) s->img_x; ++i) { + stbi__uint32 v = (stbi__uint32) (bpp == 16 ? stbi__get16le(s) : stbi__get32le(s)); + int a; + out[z++] = STBI__BYTECAST(stbi__shiftsigned(v & mr, rshift, rcount)); + out[z++] = STBI__BYTECAST(stbi__shiftsigned(v & mg, gshift, gcount)); + out[z++] = STBI__BYTECAST(stbi__shiftsigned(v & mb, bshift, bcount)); + a = (ma ? stbi__shiftsigned(v & ma, ashift, acount) : 255); + if (target == 4) out[z++] = STBI__BYTECAST(a); + } + } + stbi__skip(s, pad); + } + } + if (flip_vertically) { + stbi_uc t; + for (j=0; j < (int) s->img_y>>1; ++j) { + stbi_uc *p1 = out + j *s->img_x*target; + stbi_uc *p2 = out + (s->img_y-1-j)*s->img_x*target; + for (i=0; i < (int) s->img_x*target; ++i) { + t = p1[i], p1[i] = p2[i], p2[i] = t; + } + } + } + + if (req_comp && req_comp != target) { + out = stbi__convert_format(out, target, req_comp, s->img_x, s->img_y); + if (out == NULL) return out; // stbi__convert_format frees input on failure + } + + *x = s->img_x; + *y = s->img_y; + if (comp) *comp = s->img_n; + return out; +} + +// Targa Truevision - TGA +// by Jonathan Dummer + +static int stbi__tga_info(stbi__context *s, int *x, int *y, int *comp) +{ + int tga_w, tga_h, tga_comp; + int sz; + stbi__get8(s); // discard Offset + sz = stbi__get8(s); // color type + if( sz > 1 ) { + stbi__rewind(s); + return 0; // only RGB or indexed allowed + } + sz = stbi__get8(s); // image type + // only RGB or grey allowed, +/- RLE + if ((sz != 1) && (sz != 2) && (sz != 3) && (sz != 9) && (sz != 10) && (sz != 11)) return 0; + stbi__skip(s,9); + tga_w = stbi__get16le(s); + if( tga_w < 1 ) { + stbi__rewind(s); + return 0; // test width + } + tga_h = stbi__get16le(s); + if( tga_h < 1 ) { + stbi__rewind(s); + return 0; // test height + } + sz = stbi__get8(s); // bits per pixel + // only RGB or RGBA or grey allowed + if ((sz != 8) && (sz != 16) && (sz != 24) && (sz != 32)) { + stbi__rewind(s); + return 0; + } + tga_comp = sz; + if (x) *x = tga_w; + if (y) *y = tga_h; + if (comp) *comp = tga_comp / 8; + return 1; // seems to have passed everything +} + +static int stbi__tga_test(stbi__context *s) +{ + int res; + int sz; + stbi__get8(s); // discard Offset + sz = stbi__get8(s); // color type + if ( sz > 1 ) return 0; // only RGB or indexed allowed + sz = stbi__get8(s); // image type + if ( (sz != 1) && (sz != 2) && (sz != 3) && (sz != 9) && (sz != 10) && (sz != 11) ) return 0; // only RGB or grey allowed, +/- RLE + stbi__get16be(s); // discard palette start + stbi__get16be(s); // discard palette length + stbi__get8(s); // discard bits per palette color entry + stbi__get16be(s); // discard x origin + stbi__get16be(s); // discard y origin + if ( stbi__get16be(s) < 1 ) return 0; // test width + if ( stbi__get16be(s) < 1 ) return 0; // test height + sz = stbi__get8(s); // bits per pixel + if ( (sz != 8) && (sz != 16) && (sz != 24) && (sz != 32) ) + res = 0; + else + res = 1; + stbi__rewind(s); + return res; +} + +static stbi_uc *stbi__tga_load(stbi__context *s, int *x, int *y, int *comp, int req_comp) +{ + // read in the TGA header stuff + int tga_offset = stbi__get8(s); + int tga_indexed = stbi__get8(s); + int tga_image_type = stbi__get8(s); + int tga_is_RLE = 0; + int tga_palette_start = stbi__get16le(s); + int tga_palette_len = stbi__get16le(s); + int tga_palette_bits = stbi__get8(s); + int tga_x_origin = stbi__get16le(s); + int tga_y_origin = stbi__get16le(s); + int tga_width = stbi__get16le(s); + int tga_height = stbi__get16le(s); + int tga_bits_per_pixel = stbi__get8(s); + int tga_comp = tga_bits_per_pixel / 8; + int tga_inverted = stbi__get8(s); + // image data + unsigned char *tga_data; + unsigned char *tga_palette = NULL; + int i, j; + unsigned char raw_data[4]; + int RLE_count = 0; + int RLE_repeating = 0; + int read_next_pixel = 1; + + // do a tiny bit of precessing + if ( tga_image_type >= 8 ) + { + tga_image_type -= 8; + tga_is_RLE = 1; + } + /* int tga_alpha_bits = tga_inverted & 15; */ + tga_inverted = 1 - ((tga_inverted >> 5) & 1); + + // error check + if ( //(tga_indexed) || + (tga_width < 1) || (tga_height < 1) || + (tga_image_type < 1) || (tga_image_type > 3) || + ((tga_bits_per_pixel != 8) && (tga_bits_per_pixel != 16) && + (tga_bits_per_pixel != 24) && (tga_bits_per_pixel != 32)) + ) + { + return NULL; // we don't report this as a bad TGA because we don't even know if it's TGA + } + + // If I'm paletted, then I'll use the number of bits from the palette + if ( tga_indexed ) + { + tga_comp = tga_palette_bits / 8; + } + + // tga info + *x = tga_width; + *y = tga_height; + if (comp) *comp = tga_comp; + + tga_data = (unsigned char*)stbi__malloc( tga_width * tga_height * tga_comp ); + if (!tga_data) return stbi__errpuc("outofmem", "Out of memory"); + + // skip to the data's starting position (offset usually = 0) + stbi__skip(s, tga_offset ); + + if ( !tga_indexed && !tga_is_RLE) { + for (i=0; i < tga_height; ++i) { + int y = tga_inverted ? tga_height -i - 1 : i; + stbi_uc *tga_row = tga_data + y*tga_width*tga_comp; + stbi__getn(s, tga_row, tga_width * tga_comp); + } + } else { + // do I need to load a palette? + if ( tga_indexed) + { + // any data to skip? (offset usually = 0) + stbi__skip(s, tga_palette_start ); + // load the palette + tga_palette = (unsigned char*)stbi__malloc( tga_palette_len * tga_palette_bits / 8 ); + if (!tga_palette) { + free(tga_data); + return stbi__errpuc("outofmem", "Out of memory"); + } + if (!stbi__getn(s, tga_palette, tga_palette_len * tga_palette_bits / 8 )) { + free(tga_data); + free(tga_palette); + return stbi__errpuc("bad palette", "Corrupt TGA"); + } + } + // load the data + for (i=0; i < tga_width * tga_height; ++i) + { + // if I'm in RLE mode, do I need to get a RLE stbi__pngchunk? + if ( tga_is_RLE ) + { + if ( RLE_count == 0 ) + { + // yep, get the next byte as a RLE command + int RLE_cmd = stbi__get8(s); + RLE_count = 1 + (RLE_cmd & 127); + RLE_repeating = RLE_cmd >> 7; + read_next_pixel = 1; + } else if ( !RLE_repeating ) + { + read_next_pixel = 1; + } + } else + { + read_next_pixel = 1; + } + // OK, if I need to read a pixel, do it now + if ( read_next_pixel ) + { + // load however much data we did have + if ( tga_indexed ) + { + // read in 1 byte, then perform the lookup + int pal_idx = stbi__get8(s); + if ( pal_idx >= tga_palette_len ) + { + // invalid index + pal_idx = 0; + } + pal_idx *= tga_bits_per_pixel / 8; + for (j = 0; j*8 < tga_bits_per_pixel; ++j) + { + raw_data[j] = tga_palette[pal_idx+j]; + } + } else + { + // read in the data raw + for (j = 0; j*8 < tga_bits_per_pixel; ++j) + { + raw_data[j] = stbi__get8(s); + } + } + // clear the reading flag for the next pixel + read_next_pixel = 0; + } // end of reading a pixel + + // copy data + for (j = 0; j < tga_comp; ++j) + tga_data[i*tga_comp+j] = raw_data[j]; + + // in case we're in RLE mode, keep counting down + --RLE_count; + } + // do I need to invert the image? + if ( tga_inverted ) + { + for (j = 0; j*2 < tga_height; ++j) + { + int index1 = j * tga_width * tga_comp; + int index2 = (tga_height - 1 - j) * tga_width * tga_comp; + for (i = tga_width * tga_comp; i > 0; --i) + { + unsigned char temp = tga_data[index1]; + tga_data[index1] = tga_data[index2]; + tga_data[index2] = temp; + ++index1; + ++index2; + } + } + } + // clear my palette, if I had one + if ( tga_palette != NULL ) + { + free( tga_palette ); + } + } + + // swap RGB + if (tga_comp >= 3) + { + unsigned char* tga_pixel = tga_data; + for (i=0; i < tga_width * tga_height; ++i) + { + unsigned char temp = tga_pixel[0]; + tga_pixel[0] = tga_pixel[2]; + tga_pixel[2] = temp; + tga_pixel += tga_comp; + } + } + + // convert to target component count + if (req_comp && req_comp != tga_comp) + tga_data = stbi__convert_format(tga_data, tga_comp, req_comp, tga_width, tga_height); + + // the things I do to get rid of an error message, and yet keep + // Microsoft's C compilers happy... [8^( + tga_palette_start = tga_palette_len = tga_palette_bits = + tga_x_origin = tga_y_origin = 0; + // OK, done + return tga_data; +} + +// ************************************************************************************************* +// Photoshop PSD loader -- PD by Thatcher Ulrich, integration by Nicolas Schulz, tweaked by STB + +static int stbi__psd_test(stbi__context *s) +{ + int r = (stbi__get32be(s) == 0x38425053); + stbi__rewind(s); + return r; +} + +static stbi_uc *stbi__psd_load(stbi__context *s, int *x, int *y, int *comp, int req_comp) +{ + int pixelCount; + int channelCount, compression; + int channel, i, count, len; + int w,h; + stbi_uc *out; + + // Check identifier + if (stbi__get32be(s) != 0x38425053) // "8BPS" + return stbi__errpuc("not PSD", "Corrupt PSD image"); + + // Check file type version. + if (stbi__get16be(s) != 1) + return stbi__errpuc("wrong version", "Unsupported version of PSD image"); + + // Skip 6 reserved bytes. + stbi__skip(s, 6 ); + + // Read the number of channels (R, G, B, A, etc). + channelCount = stbi__get16be(s); + if (channelCount < 0 || channelCount > 16) + return stbi__errpuc("wrong channel count", "Unsupported number of channels in PSD image"); + + // Read the rows and columns of the image. + h = stbi__get32be(s); + w = stbi__get32be(s); + + // Make sure the depth is 8 bits. + if (stbi__get16be(s) != 8) + return stbi__errpuc("unsupported bit depth", "PSD bit depth is not 8 bit"); + + // Make sure the color mode is RGB. + // Valid options are: + // 0: Bitmap + // 1: Grayscale + // 2: Indexed color + // 3: RGB color + // 4: CMYK color + // 7: Multichannel + // 8: Duotone + // 9: Lab color + if (stbi__get16be(s) != 3) + return stbi__errpuc("wrong color format", "PSD is not in RGB color format"); + + // Skip the Mode Data. (It's the palette for indexed color; other info for other modes.) + stbi__skip(s,stbi__get32be(s) ); + + // Skip the image resources. (resolution, pen tool paths, etc) + stbi__skip(s, stbi__get32be(s) ); + + // Skip the reserved data. + stbi__skip(s, stbi__get32be(s) ); + + // Find out if the data is compressed. + // Known values: + // 0: no compression + // 1: RLE compressed + compression = stbi__get16be(s); + if (compression > 1) + return stbi__errpuc("bad compression", "PSD has an unknown compression format"); + + // Create the destination image. + out = (stbi_uc *) stbi__malloc(4 * w*h); + if (!out) return stbi__errpuc("outofmem", "Out of memory"); + pixelCount = w*h; + + // Initialize the data to zero. + //memset( out, 0, pixelCount * 4 ); + + // Finally, the image data. + if (compression) { + // RLE as used by .PSD and .TIFF + // Loop until you get the number of unpacked bytes you are expecting: + // Read the next source byte into n. + // If n is between 0 and 127 inclusive, copy the next n+1 bytes literally. + // Else if n is between -127 and -1 inclusive, copy the next byte -n+1 times. + // Else if n is 128, noop. + // Endloop + + // The RLE-compressed data is preceeded by a 2-byte data count for each row in the data, + // which we're going to just skip. + stbi__skip(s, h * channelCount * 2 ); + + // Read the RLE data by channel. + for (channel = 0; channel < 4; channel++) { + stbi_uc *p; + + p = out+channel; + if (channel >= channelCount) { + // Fill this channel with default data. + for (i = 0; i < pixelCount; i++) *p = (channel == 3 ? 255 : 0), p += 4; + } else { + // Read the RLE data. + count = 0; + while (count < pixelCount) { + len = stbi__get8(s); + if (len == 128) { + // No-op. + } else if (len < 128) { + // Copy next len+1 bytes literally. + len++; + count += len; + while (len) { + *p = stbi__get8(s); + p += 4; + len--; + } + } else if (len > 128) { + stbi_uc val; + // Next -len+1 bytes in the dest are replicated from next source byte. + // (Interpret len as a negative 8-bit int.) + len ^= 0x0FF; + len += 2; + val = stbi__get8(s); + count += len; + while (len) { + *p = val; + p += 4; + len--; + } + } + } + } + } + + } else { + // We're at the raw image data. It's each channel in order (Red, Green, Blue, Alpha, ...) + // where each channel consists of an 8-bit value for each pixel in the image. + + // Read the data by channel. + for (channel = 0; channel < 4; channel++) { + stbi_uc *p; + + p = out + channel; + if (channel > channelCount) { + // Fill this channel with default data. + for (i = 0; i < pixelCount; i++) *p = channel == 3 ? 255 : 0, p += 4; + } else { + // Read the data. + for (i = 0; i < pixelCount; i++) + *p = stbi__get8(s), p += 4; + } + } + } + + if (req_comp && req_comp != 4) { + out = stbi__convert_format(out, 4, req_comp, w, h); + if (out == NULL) return out; // stbi__convert_format frees input on failure + } + + if (comp) *comp = channelCount; + *y = h; + *x = w; + + return out; +} + +// ************************************************************************************************* +// Softimage PIC loader +// by Tom Seddon +// +// See http://softimage.wiki.softimage.com/index.php/INFO:_PIC_file_format +// See http://ozviz.wasp.uwa.edu.au/~pbourke/dataformats/softimagepic/ + +static int stbi__pic_is4(stbi__context *s,const char *str) +{ + int i; + for (i=0; i<4; ++i) + if (stbi__get8(s) != (stbi_uc)str[i]) + return 0; + + return 1; +} + +static int stbi__pic_test_core(stbi__context *s) +{ + int i; + + if (!stbi__pic_is4(s,"\x53\x80\xF6\x34")) + return 0; + + for(i=0;i<84;++i) + stbi__get8(s); + + if (!stbi__pic_is4(s,"PICT")) + return 0; + + return 1; +} + +typedef struct +{ + stbi_uc size,type,channel; +} stbi__pic_packet; + +static stbi_uc *stbi__readval(stbi__context *s, int channel, stbi_uc *dest) +{ + int mask=0x80, i; + + for (i=0; i<4; ++i, mask>>=1) { + if (channel & mask) { + if (stbi__at_eof(s)) return stbi__errpuc("bad file","PIC file too short"); + dest[i]=stbi__get8(s); + } + } + + return dest; +} + +static void stbi__copyval(int channel,stbi_uc *dest,const stbi_uc *src) +{ + int mask=0x80,i; + + for (i=0;i<4; ++i, mask>>=1) + if (channel&mask) + dest[i]=src[i]; +} + +static stbi_uc *stbi__pic_load_core(stbi__context *s,int width,int height,int *comp, stbi_uc *result) +{ + int act_comp=0,num_packets=0,y,chained; + stbi__pic_packet packets[10]; + + // this will (should...) cater for even some bizarre stuff like having data + // for the same channel in multiple packets. + do { + stbi__pic_packet *packet; + + if (num_packets==sizeof(packets)/sizeof(packets[0])) + return stbi__errpuc("bad format","too many packets"); + + packet = &packets[num_packets++]; + + chained = stbi__get8(s); + packet->size = stbi__get8(s); + packet->type = stbi__get8(s); + packet->channel = stbi__get8(s); + + act_comp |= packet->channel; + + if (stbi__at_eof(s)) return stbi__errpuc("bad file","file too short (reading packets)"); + if (packet->size != 8) return stbi__errpuc("bad format","packet isn't 8bpp"); + } while (chained); + + *comp = (act_comp & 0x10 ? 4 : 3); // has alpha channel? + + for(y=0; ytype) { + default: + return stbi__errpuc("bad format","packet has bad compression type"); + + case 0: {//uncompressed + int x; + + for(x=0;xchannel,dest)) + return 0; + break; + } + + case 1://Pure RLE + { + int left=width, i; + + while (left>0) { + stbi_uc count,value[4]; + + count=stbi__get8(s); + if (stbi__at_eof(s)) return stbi__errpuc("bad file","file too short (pure read count)"); + + if (count > left) + count = (stbi_uc) left; + + if (!stbi__readval(s,packet->channel,value)) return 0; + + for(i=0; ichannel,dest,value); + left -= count; + } + } + break; + + case 2: {//Mixed RLE + int left=width; + while (left>0) { + int count = stbi__get8(s), i; + if (stbi__at_eof(s)) return stbi__errpuc("bad file","file too short (mixed read count)"); + + if (count >= 128) { // Repeated + stbi_uc value[4]; + int i; + + if (count==128) + count = stbi__get16be(s); + else + count -= 127; + if (count > left) + return stbi__errpuc("bad file","scanline overrun"); + + if (!stbi__readval(s,packet->channel,value)) + return 0; + + for(i=0;ichannel,dest,value); + } else { // Raw + ++count; + if (count>left) return stbi__errpuc("bad file","scanline overrun"); + + for(i=0;ichannel,dest)) + return 0; + } + left-=count; + } + break; + } + } + } + } + + return result; +} + +static stbi_uc *stbi__pic_load(stbi__context *s,int *px,int *py,int *comp,int req_comp) +{ + stbi_uc *result; + int i, x,y; + + for (i=0; i<92; ++i) + stbi__get8(s); + + x = stbi__get16be(s); + y = stbi__get16be(s); + if (stbi__at_eof(s)) return stbi__errpuc("bad file","file too short (pic header)"); + if ((1 << 28) / x < y) return stbi__errpuc("too large", "Image too large to decode"); + + stbi__get32be(s); //skip `ratio' + stbi__get16be(s); //skip `fields' + stbi__get16be(s); //skip `pad' + + // intermediate buffer is RGBA + result = (stbi_uc *) stbi__malloc(x*y*4); + memset(result, 0xff, x*y*4); + + if (!stbi__pic_load_core(s,x,y,comp, result)) { + free(result); + result=0; + } + *px = x; + *py = y; + if (req_comp == 0) req_comp = *comp; + result=stbi__convert_format(result,4,req_comp,x,y); + + return result; +} + +static int stbi__pic_test(stbi__context *s) +{ + int r = stbi__pic_test_core(s); + stbi__rewind(s); + return r; +} + +// ************************************************************************************************* +// GIF loader -- public domain by Jean-Marc Lienher -- simplified/shrunk by stb +typedef struct +{ + stbi__int16 prefix; + stbi_uc first; + stbi_uc suffix; +} stbi__gif_lzw; + +typedef struct +{ + int w,h; + stbi_uc *out; // output buffer (always 4 components) + int flags, bgindex, ratio, transparent, eflags; + stbi_uc pal[256][4]; + stbi_uc lpal[256][4]; + stbi__gif_lzw codes[4096]; + stbi_uc *color_table; + int parse, step; + int lflags; + int start_x, start_y; + int max_x, max_y; + int cur_x, cur_y; + int line_size; +} stbi__gif; + +static int stbi__gif_test_raw(stbi__context *s) +{ + int sz; + if (stbi__get8(s) != 'G' || stbi__get8(s) != 'I' || stbi__get8(s) != 'F' || stbi__get8(s) != '8') return 0; + sz = stbi__get8(s); + if (sz != '9' && sz != '7') return 0; + if (stbi__get8(s) != 'a') return 0; + return 1; +} + +static int stbi__gif_test(stbi__context *s) +{ + int r = stbi__gif_test_raw(s); + stbi__rewind(s); + return r; +} + +static void stbi__gif_parse_colortable(stbi__context *s, stbi_uc pal[256][4], int num_entries, int transp) +{ + int i; + for (i=0; i < num_entries; ++i) { + pal[i][2] = stbi__get8(s); + pal[i][1] = stbi__get8(s); + pal[i][0] = stbi__get8(s); + pal[i][3] = transp ? 0 : 255; + } +} + +static int stbi__gif_header(stbi__context *s, stbi__gif *g, int *comp, int is_info) +{ + stbi_uc version; + if (stbi__get8(s) != 'G' || stbi__get8(s) != 'I' || stbi__get8(s) != 'F' || stbi__get8(s) != '8') + return stbi__err("not GIF", "Corrupt GIF"); + + version = stbi__get8(s); + if (version != '7' && version != '9') return stbi__err("not GIF", "Corrupt GIF"); + if (stbi__get8(s) != 'a') return stbi__err("not GIF", "Corrupt GIF"); + + stbi__g_failure_reason = ""; + g->w = stbi__get16le(s); + g->h = stbi__get16le(s); + g->flags = stbi__get8(s); + g->bgindex = stbi__get8(s); + g->ratio = stbi__get8(s); + g->transparent = -1; + + if (comp != 0) *comp = 4; // can't actually tell whether it's 3 or 4 until we parse the comments + + if (is_info) return 1; + + if (g->flags & 0x80) + stbi__gif_parse_colortable(s,g->pal, 2 << (g->flags & 7), -1); + + return 1; +} + +static int stbi__gif_info_raw(stbi__context *s, int *x, int *y, int *comp) +{ + stbi__gif g; + if (!stbi__gif_header(s, &g, comp, 1)) { + stbi__rewind( s ); + return 0; + } + if (x) *x = g.w; + if (y) *y = g.h; + return 1; +} + +static void stbi__out_gif_code(stbi__gif *g, stbi__uint16 code) +{ + stbi_uc *p, *c; + + // recurse to decode the prefixes, since the linked-list is backwards, + // and working backwards through an interleaved image would be nasty + if (g->codes[code].prefix >= 0) + stbi__out_gif_code(g, g->codes[code].prefix); + + if (g->cur_y >= g->max_y) return; + + p = &g->out[g->cur_x + g->cur_y]; + c = &g->color_table[g->codes[code].suffix * 4]; + + if (c[3] >= 128) { + p[0] = c[2]; + p[1] = c[1]; + p[2] = c[0]; + p[3] = c[3]; + } + g->cur_x += 4; + + if (g->cur_x >= g->max_x) { + g->cur_x = g->start_x; + g->cur_y += g->step; + + while (g->cur_y >= g->max_y && g->parse > 0) { + g->step = (1 << g->parse) * g->line_size; + g->cur_y = g->start_y + (g->step >> 1); + --g->parse; + } + } +} + +static stbi_uc *stbi__process_gif_raster(stbi__context *s, stbi__gif *g) +{ + stbi_uc lzw_cs; + stbi__int32 len, code; + stbi__uint32 first; + stbi__int32 codesize, codemask, avail, oldcode, bits, valid_bits, clear; + stbi__gif_lzw *p; + + lzw_cs = stbi__get8(s); + clear = 1 << lzw_cs; + first = 1; + codesize = lzw_cs + 1; + codemask = (1 << codesize) - 1; + bits = 0; + valid_bits = 0; + for (code = 0; code < clear; code++) { + g->codes[code].prefix = -1; + g->codes[code].first = (stbi_uc) code; + g->codes[code].suffix = (stbi_uc) code; + } + + // support no starting clear code + avail = clear+2; + oldcode = -1; + + len = 0; + for(;;) { + if (valid_bits < codesize) { + if (len == 0) { + len = stbi__get8(s); // start new block + if (len == 0) + return g->out; + } + --len; + bits |= (stbi__int32) stbi__get8(s) << valid_bits; + valid_bits += 8; + } else { + stbi__int32 code = bits & codemask; + bits >>= codesize; + valid_bits -= codesize; + // @OPTIMIZE: is there some way we can accelerate the non-clear path? + if (code == clear) { // clear code + codesize = lzw_cs + 1; + codemask = (1 << codesize) - 1; + avail = clear + 2; + oldcode = -1; + first = 0; + } else if (code == clear + 1) { // end of stream code + stbi__skip(s, len); + while ((len = stbi__get8(s)) > 0) + stbi__skip(s,len); + return g->out; + } else if (code <= avail) { + if (first) return stbi__errpuc("no clear code", "Corrupt GIF"); + + if (oldcode >= 0) { + p = &g->codes[avail++]; + if (avail > 4096) return stbi__errpuc("too many codes", "Corrupt GIF"); + p->prefix = (stbi__int16) oldcode; + p->first = g->codes[oldcode].first; + p->suffix = (code == avail) ? p->first : g->codes[code].first; + } else if (code == avail) + return stbi__errpuc("illegal code in raster", "Corrupt GIF"); + + stbi__out_gif_code(g, (stbi__uint16) code); + + if ((avail & codemask) == 0 && avail <= 0x0FFF) { + codesize++; + codemask = (1 << codesize) - 1; + } + + oldcode = code; + } else { + return stbi__errpuc("illegal code in raster", "Corrupt GIF"); + } + } + } +} + +static void stbi__fill_gif_background(stbi__gif *g) +{ + int i; + stbi_uc *c = g->pal[g->bgindex]; + // @OPTIMIZE: write a dword at a time + for (i = 0; i < g->w * g->h * 4; i += 4) { + stbi_uc *p = &g->out[i]; + p[0] = c[2]; + p[1] = c[1]; + p[2] = c[0]; + p[3] = c[3]; + } +} + +// this function is designed to support animated gifs, although stb_image doesn't support it +static stbi_uc *stbi__gif_load_next(stbi__context *s, stbi__gif *g, int *comp, int req_comp) +{ + int i; + stbi_uc *old_out = 0; + + if (g->out == 0) { + if (!stbi__gif_header(s, g, comp,0)) return 0; // stbi__g_failure_reason set by stbi__gif_header + g->out = (stbi_uc *) stbi__malloc(4 * g->w * g->h); + if (g->out == 0) return stbi__errpuc("outofmem", "Out of memory"); + stbi__fill_gif_background(g); + } else { + // animated-gif-only path + if (((g->eflags & 0x1C) >> 2) == 3) { + old_out = g->out; + g->out = (stbi_uc *) stbi__malloc(4 * g->w * g->h); + if (g->out == 0) return stbi__errpuc("outofmem", "Out of memory"); + memcpy(g->out, old_out, g->w*g->h*4); + } + } + + for (;;) { + switch (stbi__get8(s)) { + case 0x2C: /* Image Descriptor */ + { + stbi__int32 x, y, w, h; + stbi_uc *o; + + x = stbi__get16le(s); + y = stbi__get16le(s); + w = stbi__get16le(s); + h = stbi__get16le(s); + if (((x + w) > (g->w)) || ((y + h) > (g->h))) + return stbi__errpuc("bad Image Descriptor", "Corrupt GIF"); + + g->line_size = g->w * 4; + g->start_x = x * 4; + g->start_y = y * g->line_size; + g->max_x = g->start_x + w * 4; + g->max_y = g->start_y + h * g->line_size; + g->cur_x = g->start_x; + g->cur_y = g->start_y; + + g->lflags = stbi__get8(s); + + if (g->lflags & 0x40) { + g->step = 8 * g->line_size; // first interlaced spacing + g->parse = 3; + } else { + g->step = g->line_size; + g->parse = 0; + } + + if (g->lflags & 0x80) { + stbi__gif_parse_colortable(s,g->lpal, 2 << (g->lflags & 7), g->eflags & 0x01 ? g->transparent : -1); + g->color_table = (stbi_uc *) g->lpal; + } else if (g->flags & 0x80) { + for (i=0; i < 256; ++i) // @OPTIMIZE: stbi__jpeg_reset only the previous transparent + g->pal[i][3] = 255; + if (g->transparent >= 0 && (g->eflags & 0x01)) + g->pal[g->transparent][3] = 0; + g->color_table = (stbi_uc *) g->pal; + } else + return stbi__errpuc("missing color table", "Corrupt GIF"); + + o = stbi__process_gif_raster(s, g); + if (o == NULL) return NULL; + + if (req_comp && req_comp != 4) + o = stbi__convert_format(o, 4, req_comp, g->w, g->h); + return o; + } + + case 0x21: // Comment Extension. + { + int len; + if (stbi__get8(s) == 0xF9) { // Graphic Control Extension. + len = stbi__get8(s); + if (len == 4) { + g->eflags = stbi__get8(s); + stbi__get16le(s); // delay + g->transparent = stbi__get8(s); + } else { + stbi__skip(s, len); + break; + } + } + while ((len = stbi__get8(s)) != 0) + stbi__skip(s, len); + break; + } + + case 0x3B: // gif stream termination code + return (stbi_uc *) s; // using '1' causes warning on some compilers + + default: + return stbi__errpuc("unknown code", "Corrupt GIF"); + } + } +} + +static stbi_uc *stbi__gif_load(stbi__context *s, int *x, int *y, int *comp, int req_comp) +{ + stbi_uc *u = 0; + stbi__gif g; + memset(&g, 0, sizeof(g)); + + u = stbi__gif_load_next(s, &g, comp, req_comp); + if (u == (stbi_uc *) s) u = 0; // end of animated gif marker + if (u) { + *x = g.w; + *y = g.h; + } + + return u; +} + +static int stbi__gif_info(stbi__context *s, int *x, int *y, int *comp) +{ + return stbi__gif_info_raw(s,x,y,comp); +} + + +// ************************************************************************************************* +// Radiance RGBE HDR loader +// originally by Nicolas Schulz +#ifndef STBI_NO_HDR +static int stbi__hdr_test_core(stbi__context *s) +{ + const char *signature = "#?RADIANCE\n"; + int i; + for (i=0; signature[i]; ++i) + if (stbi__get8(s) != signature[i]) + return 0; + return 1; +} + +static int stbi__hdr_test(stbi__context* s) +{ + int r = stbi__hdr_test_core(s); + stbi__rewind(s); + return r; +} + +#define STBI__HDR_BUFLEN 1024 +static char *stbi__hdr_gettoken(stbi__context *z, char *buffer) +{ + int len=0; + char c = '\0'; + + c = (char) stbi__get8(z); + + while (!stbi__at_eof(z) && c != '\n') { + buffer[len++] = c; + if (len == STBI__HDR_BUFLEN-1) { + // flush to end of line + while (!stbi__at_eof(z) && stbi__get8(z) != '\n') + ; + break; + } + c = (char) stbi__get8(z); + } + + buffer[len] = 0; + return buffer; +} + +static void stbi__hdr_convert(float *output, stbi_uc *input, int req_comp) +{ + if ( input[3] != 0 ) { + float f1; + // Exponent + f1 = (float) ldexp(1.0f, input[3] - (int)(128 + 8)); + if (req_comp <= 2) + output[0] = (input[0] + input[1] + input[2]) * f1 / 3; + else { + output[0] = input[0] * f1; + output[1] = input[1] * f1; + output[2] = input[2] * f1; + } + if (req_comp == 2) output[1] = 1; + if (req_comp == 4) output[3] = 1; + } else { + switch (req_comp) { + case 4: output[3] = 1; /* fallthrough */ + case 3: output[0] = output[1] = output[2] = 0; + break; + case 2: output[1] = 1; /* fallthrough */ + case 1: output[0] = 0; + break; + } + } +} + +static float *stbi__hdr_load(stbi__context *s, int *x, int *y, int *comp, int req_comp) +{ + char buffer[STBI__HDR_BUFLEN]; + char *token; + int valid = 0; + int width, height; + stbi_uc *scanline; + float *hdr_data; + int len; + unsigned char count, value; + int i, j, k, c1,c2, z; + + + // Check identifier + if (strcmp(stbi__hdr_gettoken(s,buffer), "#?RADIANCE") != 0) + return stbi__errpf("not HDR", "Corrupt HDR image"); + + // Parse header + for(;;) { + token = stbi__hdr_gettoken(s,buffer); + if (token[0] == 0) break; + if (strcmp(token, "FORMAT=32-bit_rle_rgbe") == 0) valid = 1; + } + + if (!valid) return stbi__errpf("unsupported format", "Unsupported HDR format"); + + // Parse width and height + // can't use sscanf() if we're not using stdio! + token = stbi__hdr_gettoken(s,buffer); + if (strncmp(token, "-Y ", 3)) return stbi__errpf("unsupported data layout", "Unsupported HDR format"); + token += 3; + height = (int) strtol(token, &token, 10); + while (*token == ' ') ++token; + if (strncmp(token, "+X ", 3)) return stbi__errpf("unsupported data layout", "Unsupported HDR format"); + token += 3; + width = (int) strtol(token, NULL, 10); + + *x = width; + *y = height; + + if (comp) *comp = 3; + if (req_comp == 0) req_comp = 3; + + // Read data + hdr_data = (float *) stbi__malloc(height * width * req_comp * sizeof(float)); + + // Load image data + // image data is stored as some number of sca + if ( width < 8 || width >= 32768) { + // Read flat data + for (j=0; j < height; ++j) { + for (i=0; i < width; ++i) { + stbi_uc rgbe[4]; + main_decode_loop: + stbi__getn(s, rgbe, 4); + stbi__hdr_convert(hdr_data + j * width * req_comp + i * req_comp, rgbe, req_comp); + } + } + } else { + // Read RLE-encoded data + scanline = NULL; + + for (j = 0; j < height; ++j) { + c1 = stbi__get8(s); + c2 = stbi__get8(s); + len = stbi__get8(s); + if (c1 != 2 || c2 != 2 || (len & 0x80)) { + // not run-length encoded, so we have to actually use THIS data as a decoded + // pixel (note this can't be a valid pixel--one of RGB must be >= 128) + stbi_uc rgbe[4]; + rgbe[0] = (stbi_uc) c1; + rgbe[1] = (stbi_uc) c2; + rgbe[2] = (stbi_uc) len; + rgbe[3] = (stbi_uc) stbi__get8(s); + stbi__hdr_convert(hdr_data, rgbe, req_comp); + i = 1; + j = 0; + free(scanline); + goto main_decode_loop; // yes, this makes no sense + } + len <<= 8; + len |= stbi__get8(s); + if (len != width) { free(hdr_data); free(scanline); return stbi__errpf("invalid decoded scanline length", "corrupt HDR"); } + if (scanline == NULL) scanline = (stbi_uc *) stbi__malloc(width * 4); + + for (k = 0; k < 4; ++k) { + i = 0; + while (i < width) { + count = stbi__get8(s); + if (count > 128) { + // Run + value = stbi__get8(s); + count -= 128; + for (z = 0; z < count; ++z) + scanline[i++ * 4 + k] = value; + } else { + // Dump + for (z = 0; z < count; ++z) + scanline[i++ * 4 + k] = stbi__get8(s); + } + } + } + for (i=0; i < width; ++i) + stbi__hdr_convert(hdr_data+(j*width + i)*req_comp, scanline + i*4, req_comp); + } + free(scanline); + } + + return hdr_data; +} + +static int stbi__hdr_info(stbi__context *s, int *x, int *y, int *comp) +{ + char buffer[STBI__HDR_BUFLEN]; + char *token; + int valid = 0; + + if (strcmp(stbi__hdr_gettoken(s,buffer), "#?RADIANCE") != 0) { + stbi__rewind( s ); + return 0; + } + + for(;;) { + token = stbi__hdr_gettoken(s,buffer); + if (token[0] == 0) break; + if (strcmp(token, "FORMAT=32-bit_rle_rgbe") == 0) valid = 1; + } + + if (!valid) { + stbi__rewind( s ); + return 0; + } + token = stbi__hdr_gettoken(s,buffer); + if (strncmp(token, "-Y ", 3)) { + stbi__rewind( s ); + return 0; + } + token += 3; + *y = (int) strtol(token, &token, 10); + while (*token == ' ') ++token; + if (strncmp(token, "+X ", 3)) { + stbi__rewind( s ); + return 0; + } + token += 3; + *x = (int) strtol(token, NULL, 10); + *comp = 3; + return 1; +} +#endif // STBI_NO_HDR + +static int stbi__bmp_info(stbi__context *s, int *x, int *y, int *comp) +{ + int hsz; + if (stbi__get8(s) != 'B' || stbi__get8(s) != 'M') { + stbi__rewind( s ); + return 0; + } + stbi__skip(s,12); + hsz = stbi__get32le(s); + if (hsz != 12 && hsz != 40 && hsz != 56 && hsz != 108 && hsz != 124) { + stbi__rewind( s ); + return 0; + } + if (hsz == 12) { + *x = stbi__get16le(s); + *y = stbi__get16le(s); + } else { + *x = stbi__get32le(s); + *y = stbi__get32le(s); + } + if (stbi__get16le(s) != 1) { + stbi__rewind( s ); + return 0; + } + *comp = stbi__get16le(s) / 8; + return 1; +} + +static int stbi__psd_info(stbi__context *s, int *x, int *y, int *comp) +{ + int channelCount; + if (stbi__get32be(s) != 0x38425053) { + stbi__rewind( s ); + return 0; + } + if (stbi__get16be(s) != 1) { + stbi__rewind( s ); + return 0; + } + stbi__skip(s, 6); + channelCount = stbi__get16be(s); + if (channelCount < 0 || channelCount > 16) { + stbi__rewind( s ); + return 0; + } + *y = stbi__get32be(s); + *x = stbi__get32be(s); + if (stbi__get16be(s) != 8) { + stbi__rewind( s ); + return 0; + } + if (stbi__get16be(s) != 3) { + stbi__rewind( s ); + return 0; + } + *comp = 4; + return 1; +} + +static int stbi__pic_info(stbi__context *s, int *x, int *y, int *comp) +{ + int act_comp=0,num_packets=0,chained; + stbi__pic_packet packets[10]; + + stbi__skip(s, 92); + + *x = stbi__get16be(s); + *y = stbi__get16be(s); + if (stbi__at_eof(s)) return 0; + if ( (*x) != 0 && (1 << 28) / (*x) < (*y)) { + stbi__rewind( s ); + return 0; + } + + stbi__skip(s, 8); + + do { + stbi__pic_packet *packet; + + if (num_packets==sizeof(packets)/sizeof(packets[0])) + return 0; + + packet = &packets[num_packets++]; + chained = stbi__get8(s); + packet->size = stbi__get8(s); + packet->type = stbi__get8(s); + packet->channel = stbi__get8(s); + act_comp |= packet->channel; + + if (stbi__at_eof(s)) { + stbi__rewind( s ); + return 0; + } + if (packet->size != 8) { + stbi__rewind( s ); + return 0; + } + } while (chained); + + *comp = (act_comp & 0x10 ? 4 : 3); + + return 1; +} + +static int stbi__info_main(stbi__context *s, int *x, int *y, int *comp) +{ + if (stbi__jpeg_info(s, x, y, comp)) + return 1; + if (stbi__png_info(s, x, y, comp)) + return 1; + if (stbi__gif_info(s, x, y, comp)) + return 1; + if (stbi__bmp_info(s, x, y, comp)) + return 1; + if (stbi__psd_info(s, x, y, comp)) + return 1; + if (stbi__pic_info(s, x, y, comp)) + return 1; +#ifndef STBI_NO_HDR + if (stbi__hdr_info(s, x, y, comp)) + return 1; +#endif + // test tga last because it's a crappy test! + if (stbi__tga_info(s, x, y, comp)) + return 1; + return stbi__err("unknown image type", "Image not of any known type, or corrupt"); +} + +#ifndef STBI_NO_STDIO +STBIDEF int stbi_info(char const *filename, int *x, int *y, int *comp) +{ + FILE *f = stbi__fopen(filename, "rb"); + int result; + if (!f) return stbi__err("can't fopen", "Unable to open file"); + result = stbi_info_from_file(f, x, y, comp); + fclose(f); + return result; +} + +STBIDEF int stbi_info_from_file(FILE *f, int *x, int *y, int *comp) +{ + int r; + stbi__context s; + long pos = ftell(f); + stbi__start_file(&s, f); + r = stbi__info_main(&s,x,y,comp); + fseek(f,pos,SEEK_SET); + return r; +} +#endif // !STBI_NO_STDIO + +STBIDEF int stbi_info_from_memory(stbi_uc const *buffer, int len, int *x, int *y, int *comp) +{ + stbi__context s; + stbi__start_mem(&s,buffer,len); + return stbi__info_main(&s,x,y,comp); +} + +STBIDEF int stbi_info_from_callbacks(stbi_io_callbacks const *c, void *user, int *x, int *y, int *comp) +{ + stbi__context s; + stbi__start_callbacks(&s, (stbi_io_callbacks *) c, user); + return stbi__info_main(&s,x,y,comp); +} + +#endif // STB_IMAGE_IMPLEMENTATION + +/* + revision history: + 1.46 (2014-08-26) + fix broken tRNS chunk (colorkey-style transparency) in non-paletted PNG + 1.45 (2014-08-16) + fix MSVC-ARM internal compiler error by wrapping malloc + 1.44 (2014-08-07) + various warning fixes from Ronny Chevalier + 1.43 (2014-07-15) + fix MSVC-only compiler problem in code changed in 1.42 + 1.42 (2014-07-09) + don't define _CRT_SECURE_NO_WARNINGS (affects user code) + fixes to stbi__cleanup_jpeg path + added STBI_ASSERT to avoid requiring assert.h + 1.41 (2014-06-25) + fix search&replace from 1.36 that messed up comments/error messages + 1.40 (2014-06-22) + fix gcc struct-initialization warning + 1.39 (2014-06-15) + fix to TGA optimization when req_comp != number of components in TGA; + fix to GIF loading because BMP wasn't rewinding (whoops, no GIFs in my test suite) + add support for BMP version 5 (more ignored fields) + 1.38 (2014-06-06) + suppress MSVC warnings on integer casts truncating values + fix accidental rename of 'skip' field of I/O + 1.37 (2014-06-04) + remove duplicate typedef + 1.36 (2014-06-03) + convert to header file single-file library + if de-iphone isn't set, load iphone images color-swapped instead of returning NULL + 1.35 (2014-05-27) + various warnings + fix broken STBI_SIMD path + fix bug where stbi_load_from_file no longer left file pointer in correct place + fix broken non-easy path for 32-bit BMP (possibly never used) + TGA optimization by Arseny Kapoulkine + 1.34 (unknown) + use STBI_NOTUSED in stbi__resample_row_generic(), fix one more leak in tga failure case + 1.33 (2011-07-14) + make stbi_is_hdr work in STBI_NO_HDR (as specified), minor compiler-friendly improvements + 1.32 (2011-07-13) + support for "info" function for all supported filetypes (SpartanJ) + 1.31 (2011-06-20) + a few more leak fixes, bug in PNG handling (SpartanJ) + 1.30 (2011-06-11) + added ability to load files via callbacks to accomidate custom input streams (Ben Wenger) + removed deprecated format-specific test/load functions + removed support for installable file formats (stbi_loader) -- would have been broken for IO callbacks anyway + error cases in bmp and tga give messages and don't leak (Raymond Barbiero, grisha) + fix inefficiency in decoding 32-bit BMP (David Woo) + 1.29 (2010-08-16) + various warning fixes from Aurelien Pocheville + 1.28 (2010-08-01) + fix bug in GIF palette transparency (SpartanJ) + 1.27 (2010-08-01) + cast-to-stbi_uc to fix warnings + 1.26 (2010-07-24) + fix bug in file buffering for PNG reported by SpartanJ + 1.25 (2010-07-17) + refix trans_data warning (Won Chun) + 1.24 (2010-07-12) + perf improvements reading from files on platforms with lock-heavy fgetc() + minor perf improvements for jpeg + deprecated type-specific functions so we'll get feedback if they're needed + attempt to fix trans_data warning (Won Chun) + 1.23 fixed bug in iPhone support + 1.22 (2010-07-10) + removed image *writing* support + stbi_info support from Jetro Lauha + GIF support from Jean-Marc Lienher + iPhone PNG-extensions from James Brown + warning-fixes from Nicolas Schulz and Janez Zemva (i.stbi__err. Janez (U+017D)emva) + 1.21 fix use of 'stbi_uc' in header (reported by jon blow) + 1.20 added support for Softimage PIC, by Tom Seddon + 1.19 bug in interlaced PNG corruption check (found by ryg) + 1.18 2008-08-02 + fix a threading bug (local mutable static) + 1.17 support interlaced PNG + 1.16 major bugfix - stbi__convert_format converted one too many pixels + 1.15 initialize some fields for thread safety + 1.14 fix threadsafe conversion bug + header-file-only version (#define STBI_HEADER_FILE_ONLY before including) + 1.13 threadsafe + 1.12 const qualifiers in the API + 1.11 Support installable IDCT, colorspace conversion routines + 1.10 Fixes for 64-bit (don't use "unsigned long") + optimized upsampling by Fabian "ryg" Giesen + 1.09 Fix format-conversion for PSD code (bad global variables!) + 1.08 Thatcher Ulrich's PSD code integrated by Nicolas Schulz + 1.07 attempt to fix C++ warning/errors again + 1.06 attempt to fix C++ warning/errors again + 1.05 fix TGA loading to return correct *comp and use good luminance calc + 1.04 default float alpha is 1, not 255; use 'void *' for stbi_image_free + 1.03 bugfixes to STBI_NO_STDIO, STBI_NO_HDR + 1.02 support for (subset of) HDR files, float interface for preferred access to them + 1.01 fix bug: possible bug in handling right-side up bmps... not sure + fix bug: the stbi__bmp_load() and stbi__tga_load() functions didn't work at all + 1.00 interface to zlib that skips zlib header + 0.99 correct handling of alpha in palette + 0.98 TGA loader by lonesock; dynamically add loaders (untested) + 0.97 jpeg errors on too large a file; also catch another malloc failure + 0.96 fix detection of invalid v value - particleman@mollyrocket forum + 0.95 during header scan, seek to markers in case of padding + 0.94 STBI_NO_STDIO to disable stdio usage; rename all #defines the same + 0.93 handle jpegtran output; verbose errors + 0.92 read 4,8,16,24,32-bit BMP files of several formats + 0.91 output 24-bit Windows 3.0 BMP files + 0.90 fix a few more warnings; bump version number to approach 1.0 + 0.61 bugfixes due to Marc LeBlanc, Christopher Lloyd + 0.60 fix compiling as c++ + 0.59 fix warnings: merge Dave Moore's -Wall fixes + 0.58 fix bug: zlib uncompressed mode len/nlen was wrong endian + 0.57 fix bug: jpg last huffman symbol before marker was >9 bits but less than 16 available + 0.56 fix bug: zlib uncompressed mode len vs. nlen + 0.55 fix bug: restart_interval not initialized to 0 + 0.54 allow NULL for 'int *comp' + 0.53 fix bug in png 3->4; speedup png decoding + 0.52 png handles req_comp=3,4 directly; minor cleanup; jpeg comments + 0.51 obey req_comp requests, 1-component jpegs return as 1-component, + on 'test' only check type, not whether we support this variant + 0.50 first released version + */ \ No newline at end of file diff --git a/texture.cpp b/texture.cpp new file mode 100644 index 0000000..348c030 --- /dev/null +++ b/texture.cpp @@ -0,0 +1,71 @@ +#include "texture.h" +#define STB_IMAGE_IMPLEMENTATION +#define STBI_NO_FAILURE_STRINGS +#include "stb_image.h" +#include + +namespace Texture +{ + unsigned texture = 0; + + unsigned Create(const int w, const int h) + { + unsigned texture; + glGenTextures(1, &texture); + glBindTexture(GL_TEXTURE_2D, texture); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); + if (w != -1) glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, w, h, 0, GL_RGBA, GL_UNSIGNED_BYTE, nullptr); + return texture; + } + + const bool Load(const unsigned& texture, const char* filename) + { + int x,y,n; + char name[400]; strcpy(name, filename); + if (strrchr(filename, '.') == nullptr) strcat(name, ".png"); + unsigned char *data = stbi_load(name, &x, &y, &n, 4); + if (data == nullptr) return false; + + glBindTexture(GL_TEXTURE_2D, texture); + glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, x, y, 0, GL_RGBA, GL_UNSIGNED_BYTE, data); + + stbi_image_free(data); + + return true; + } + + uint8_t* Load(const char* filename) + { + int x,y,n; + char name[400]; strcpy(name, filename); + if (strrchr(filename, '.') == nullptr) strcat(name, ".png"); + unsigned char *data = stbi_load(name, &x, &y, &n, 4); + return data; + } + + void Update(const unsigned& texture, const int w, const int h, const uint8_t* data) + { + glBindTexture(GL_TEXTURE_2D, texture); + glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, w, h, 0, GL_RGBA, GL_UNSIGNED_BYTE, data); + } +} + +namespace Bitmap +{ + void PutPixel(uint8_t* data, const int x, const int y, const Color& color) + { + memcpy(&data[x+y*128], &color, 4); + } + + const Color GetPixel(uint8_t* data, const int x, const int y) + { + Color color; + data += (x+y*128); + color.r = *(data++); + color.g = *(data++); + color.b = *(data++); + color.a = *(data++); + return color; + } +} \ No newline at end of file diff --git a/texture.h b/texture.h new file mode 100644 index 0000000..40322a9 --- /dev/null +++ b/texture.h @@ -0,0 +1,19 @@ +#pragma once + +#include "common.h" + +namespace Texture +{ + extern unsigned texture; + + unsigned Create(const int w = -1, const int h = -1); + const bool Load(const unsigned& texture, const char* filename); + uint8_t* Load(const char* filename); + void Update(const unsigned& texture, const int w, const int h, const uint8_t* data); +} + +namespace Bitmap +{ + void PutPixel(uint8_t* data, const int x, const int y, const Color& color); + const Color GetPixel(uint8_t* data, const int x, const int y); +}