#include "grid.h"
#include <SDL2/SDL_opengl.h>

//#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();
	}
}