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draw functions

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This commit is contained in:
Raimon Zamora
2021-09-03 12:06:39 +02:00
parent 0ceccb0d5d
commit 2cc9188053
3 changed files with 132 additions and 4 deletions
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91
draw.cpp Normal file
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@@ -0,0 +1,91 @@
#include "draw.h"
#include <SDL2/SDL.h>
static SDL_Window *sdlWindow = nullptr;
static SDL_Renderer *sdlRenderer = nullptr;
static SDL_Texture *sdlTexture = nullptr;
static uint8_t pal[16][3] = {
{0, 0, 0},
{29, 43, 83},
{126, 37, 83},
{0, 135, 81},
{171, 82, 54},
{95, 87, 79},
{194, 195, 199},
{255, 241, 232},
{255, 0, 77},
{255, 163, 0},
{255, 236, 39},
{0, 228, 54},
{41, 173, 255},
{131, 118, 156},
{255, 119, 168},
{255, 204, 170}
};
void draw_init() {
sdlWindow = SDL_CreateWindow("Chirping", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, 640, 480, SDL_WINDOW_SHOWN);
sdlRenderer = SDL_CreateRenderer(sdlWindow, -1, 0);
SDL_RenderSetLogicalSize(sdlRenderer, 320, 240);
sdlTexture = SDL_CreateTextureFromSurface(sdlRenderer, SDL_LoadBMP("font.bmp"));
}
void draw_quit() {
SDL_DestroyTexture(sdlTexture);
SDL_DestroyRenderer(sdlRenderer);
SDL_DestroyWindow(sdlWindow);
}
void draw_clear() {
SDL_SetRenderDrawColor(sdlRenderer, 0, 0, 0, 255);
SDL_RenderClear(sdlRenderer);
}
void draw_present() {
SDL_RenderPresent(sdlRenderer);
}
void draw_fill(const int x1, const int y1, const int x2, const int y2, const uint8_t color) {
SDL_SetRenderDrawColor(sdlRenderer, pal[color][0], pal[color][1], pal[color][2], 255);
SDL_Rect rect {x1, y1, x2, y2};
SDL_RenderFillRect(sdlRenderer, &rect);
}
void draw_rect(const int x1, const int y1, const int x2, const int y2, const uint8_t color) {
SDL_SetRenderDrawColor(sdlRenderer, pal[color][0], pal[color][1], pal[color][2], 255);
SDL_Rect rect {x1, y1, x2, y2};
SDL_RenderDrawRect(sdlRenderer, &rect);
}
void draw_inset(const int x1, const int y1, const int x2, const int y2, const uint8_t color1, const uint8_t color2) {
SDL_SetRenderDrawColor(sdlRenderer, pal[color1][0], pal[color1][1], pal[color1][2], 255);
}
void draw_outset(const int x1, const int y1, const int x2, const int y2, const uint8_t color1, const uint8_t color2) {
SDL_SetRenderDrawColor(sdlRenderer, pal[color1][0], pal[color1][1], pal[color1][2], 255);
}
void draw_line(const int x1, const int y1, const int x2, const int y2, const uint8_t color) {
SDL_SetRenderDrawColor(sdlRenderer, pal[color][0], pal[color][1], pal[color][2], 255);
SDL_Rect rect {x1, y1, x2, y2};
SDL_RenderFillRect(sdlRenderer, &rect);
}
void draw_dotted(const int x1, const int y1, const int x2, const int y2, const uint8_t color) {
SDL_SetRenderDrawColor(sdlRenderer, pal[color][0], pal[color][1], pal[color][2], 255);
}
void draw_char(const char chr, const int x, const int y, const uint8_t color) {
SDL_SetRenderDrawColor(sdlRenderer, pal[color][0], pal[color][1], pal[color][2], 255);
}
void draw_string(const char* str, const int x, const int y, const uint8_t color) {
SDL_SetRenderDrawColor(sdlRenderer, pal[color][0], pal[color][1], pal[color][2], 255);
}

16
draw.h Normal file
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@@ -0,0 +1,16 @@
#pragma once
#include <cstdint>
void draw_init();
void draw_quit();
void draw_clear();
void draw_present();
void draw_fill(const int x1, const int y1, const int x2, const int y2, const uint8_t color);
void draw_rect(const int x1, const int y1, const int x2, const int y2, const uint8_t color);
void draw_inset(const int x1, const int y1, const int x2, const int y2, const uint8_t color1, const uint8_t color2);
void draw_outset(const int x1, const int y1, const int x2, const int y2, const uint8_t color1, const uint8_t color2);
void draw_line(const int x1, const int y1, const int x2, const int y2, const uint8_t color);
void draw_dotted(const int x1, const int y1, const int x2, const int y2, const uint8_t color);
void draw_char(const char chr, const int x, const int y, const uint8_t color);
void draw_string(const char* str, const int x, const int y, const uint8_t color);

29
main.cpp
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@@ -6,8 +6,26 @@
#define SOUND_NUM_SAMPLES SOUND_DURATION*SAMPLES_PER_SECOND
#define SOUND_SIZE_IN_BYTES SOUND_NUM_SAMPLES*AUDIO_FORMAT_SIZE
SDL_Window *sdlWindow = nullptr;
SDL_Renderer *sdlRenderer = nullptr;
SDL_Texture *sdlTexture = nullptr;
SDL_AudioSpec audioSpec{SAMPLES_PER_SECOND, AUDIO_FORMAT, 1, 0, 512, 0, 0, NULL, NULL};
void draw_char(const uint8_t character, const int x, const int y) {
SDL_Rect src {((character-32)%16)*4, ((character-32)/16)*5, 4, 5};
SDL_Rect dst {x, y, 4, 5};
SDL_RenderCopy(sdlRenderer, sdlTexture, &src, &dst);
}
void draw_string(const char* str, int x, const int y) {
const int l = strlen(str);
for (int i = 0; i < l; ++i) {
draw_char(str[i], x, y);
x += 5;
}
}
int main(int argc, char* argv[]) {
SDL_Init(SDL_INIT_EVERYTHING);
SDL_AudioDeviceID sdlAudioDevice = SDL_OpenAudioDevice(NULL, 0, &audioSpec, NULL, 0);
@@ -57,17 +75,20 @@ int main(int argc, char* argv[]) {
beeps[i] += beeps2[i];
}
SDL_Window *sdlWindow = SDL_CreateWindow("Mus", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, 1102, 700, SDL_WINDOW_SHOWN);
SDL_Renderer *sdlRenderer = SDL_CreateRenderer(sdlWindow, -1, 0);
sdlWindow = SDL_CreateWindow("Mus", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, 640, 480, SDL_WINDOW_SHOWN);
sdlRenderer = SDL_CreateRenderer(sdlWindow, -1, 0);
SDL_RenderSetLogicalSize(sdlRenderer, 320, 240);
sdlTexture = SDL_CreateTextureFromSurface(sdlRenderer, SDL_LoadBMP("font.bmp"));
SDL_SetRenderDrawColor(sdlRenderer, 255, 255, 255, 255);
int last_x = 0, last_y = 120;
/*int last_x = 0, last_y = 120;
for (int x=0; x<1102; ++x) {
int y = 700 - (350+300*(float(beeps[x*10])/float(AUDIO_FORMAT_MAX_VALUE)));
SDL_RenderDrawLine(sdlRenderer, x, y, last_x, last_y);
last_x = x; last_y = y;
}
}*/
draw_string("HOLA", 10, 10);
SDL_RenderPresent(sdlRenderer);
SDL_QueueAudio(sdlAudioDevice, &beeps[0], SOUND_SIZE_IN_BYTES*8);