/*

 * C++ RayTracer

 * file: raytracer.h

 *

 * Radek Brich, 2006

 */

#ifndef RAYTRACER_H

#define RAYTRACER_H

#include <vector>

#include "scene.h"

using namespace std;

/* axis-aligned bounding box */

class AABB

{

};

class ShapeList: public vector<Shape*>

{

	AABB extends() { return AABB(); };

};

class Raytracer;

struct RenderrowData {

	Raytracer *rt;

	int w;

	float vx, vy, dx, dy;

	Vector3 eye;

	float *iter;

};

class Raytracer

{

	ShapeList shapes;

	vector<Light*> lights;

	Colour bg_colour;

	int ao_samples;

	float ao_distance, ao_angle;

	Vector3 SphereDistribute(int i, int n, float extent, Vector3 &normal);

	inline Shape *nearest_intersection(const Shape *origin_shape, const Ray &ray,

		float &nearest_distance);

public:

	Raytracer(): shapes(), lights(), bg_colour(0.0, 0.0, 0.0), ao_samples(0) {};

	~Raytracer() {};

	float *render(int w, int h);

	Colour raytrace(Ray &ray, int depth, Shape *origin_shape);

	void addshape(Shape *shape);

	void addlight(Light *light);

	void ambientocclusion(int samples, float distance, float angle);

};

#endif