#include <iostream>

#include "entity.h"
#include "triangle.h"
#include "sphere.h"
#include "disjoint_entities.h"
#include "world_objects.h"
#include "write_rgb.h"

int main()
{
	world_objects world;

	vector3d A0(0,-2,2), B0(0,-4,2), C0(0, -3,-2);
	world.Insert(new Triangle(A0, B0, C0));

	vector3d A1(0,3,2), B1(0,2,-2), C1(0,4,-2);
	world.Insert(new Triangle(A1, B1, C1));

	vector3d A2(0,0,0);
	world.Insert(new Sphere(A2, 1.0));

	vector3d camera(10, 0, 0), view_pt(0, 0, 0);

	int screen_w = 512, screen_h = 512;

	long ** screen = new long*[screen_w];
	*screen = new long[screen_w*screen_h];
	for(int i=1; i<screen_w; i++)
		screen[i] = screen[i-1] + screen_h;

	vector3d pixel_x(0, 20.0/512.0, 0);
	vector3d pixel_y(0, 0, 20.0/512.0);
	vector3d pixel_base(0, -10, -10);

	Ray ray;
	ray.o = camera;
	vector3d pixel_loc;
	for(int i=0; i<screen_w; i++)
	{
		pixel_loc = pixel_base + pixel_x * i;
		for(int j=0; j<screen_h; j++)
		{
			ray.d = (pixel_loc - camera).ret_unit();
			IntersectInfo ii = world.CalcRayIntersect(ray);
			pixel_loc += pixel_y;

			if(ii.E) screen[i][j] = 0xFFFFFF;
			else  screen[i][j] = 0x000000;
//			printf("%X\n", ii.E);
		}
	}

	save_rgb("output.rgb", screen_h, screen_w, screen);
	return 0;
}