/*

 * raytracer.h: Raytracer class

 *

 * This file is part of Pyrit Ray Tracer.

 *

 * Copyright 2006, 2007  Radek Brich

 *

 * Permission is hereby granted, free of charge, to any person obtaining a copy

 * of this software and associated documentation files (the "Software"), to deal

 * in the Software without restriction, including without limitation the rights

 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell

 * copies of the Software, and to permit persons to whom the Software is

 * furnished to do so, subject to the following conditions:

 *

 * The above copyright notice and this permission notice shall be included in

 * all copies or substantial portions of the Software.

 *

 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE

 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,

 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN

 * THE SOFTWARE.

 */

#ifndef RAYTRACER_H

#define RAYTRACER_H

#include <vector>

#include "common.h"

#include "container.h"

#include "scene.h"

using namespace std;

class Raytracer;

struct RenderrowData {

	Raytracer *rt;

	int w;

	Vector3 eye, dfix, dx, dy;

	Float *iter;

};

class Raytracer

{

	Container *top;

	Camera *camera;

	vector<Light*> lights;

	Colour bg_colour;

	int ao_samples;

	Float ao_distance, ao_angle;

	int num_threads;

	int subsample;

	int oversample; // 0 = no, 1 = 5x, 2 = 9x, 3 = 16x

	int max_depth;

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

public:

	Raytracer(): top(NULL), camera(NULL), lights(), bg_colour(0.0, 0.0, 0.0),

		ao_samples(0), num_threads(2), subsample(8), oversample(0), max_depth(3) {};

	void render(int w, int h, Float *buffer);

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

	void addshape(Shape *shape) { top->addShape(shape); };

	void addlight(Light *light);

	void setCamera(Camera *cam) { camera = cam; };

	void setTop(Container *atop) { top = atop; };

	Container *getTop() { return top; };

	void setSubsample(int sub) { subsample = sub; };

	int getSubsample() { return subsample; };

	void setOversample(int osa) { oversample = osa; };

	int getOversample() { return oversample; };

	void setMaxDepth(int newdepth) { max_depth = newdepth; };

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

	void setThreads(int num) { num_threads = num; };

};

#endif