/* libsegl - Sebas Extended GL Library
 *           Collection of Opengl/3D-Math helpers
 *
 *      Copyright (c) 2008 by Sebastian Lohff, seba@seba-geek.de
 *      http://www.seba-geek.de
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 * 
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Library General Public License for more details.
 * 
 * You should have received a copy of the GNU Library General Public
 * License along with this library; if not, write to the
 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
 * Boston, MA  02110-1301, USA.
 */

#ifndef __GEOTYPES_H
#define __GEOTYPES_H

#include "punkt3d.h"

namespace segl {

class Ray;
class Box;
class Plane;


class Sphere {
	public:
		Punkt3D pos;
		float radius;
		
		Sphere(Punkt3D _pos, float radius);
		Sphere();
		
		void set(Punkt3D _pos, float _radius);
		
		bool collision(const Sphere &s) const;
		bool collision(const Ray &r) const;
		bool collision(const Box & b) const;
		bool collision(const Plane &p) const;
		
		int getIntersectionParam(const Ray &ray, float *param1, float *param2);
		int getIntersectionPoints(const Ray &ray, segl::Punkt3D *a, segl::Punkt3D *b);
		
		bool inSphere(Punkt3D p) const;
		Punkt3D getPos() const;
};

class Ray {
	public:
		Punkt3D pos;
		Punkt3D dir;
		
		Ray();
		Ray(const Punkt3D &_pos, const Punkt3D &_dir);
		
		void set(const Punkt3D &_pos, const Punkt3D &_dir);
		void setFromPoints(const Punkt3D &a, const Punkt3D &b);
		Punkt3D get(float x) const;
		bool onRay(Punkt3D p, int rnd=-1) const;
		float dist(Punkt3D p) const;
		float getParam(Punkt3D p, bool onray=false) const;
		
		bool collision(const Sphere &s) const;
		bool collision(const Ray &r) const;
		bool collision(const Box & b) const;
		bool collision(const Plane &p) const;
};

class Box {
	public:
		Punkt3D min;
		Punkt3D max;
		
		Box();
		Box(Punkt3D _min, Punkt3D _max);
		
		bool collision(const Sphere &s) const;
		bool collision(const Ray &r) const;
		bool collision(const Box & b) const;
		bool collision(const Plane &p) const;
};

class Plane {
	public:
		Punkt3D pos;
		Punkt3D norm;
		
		Plane();
		Plane(Punkt3D _pos, Punkt3D _norm);
		Plane(float x, float y, float z, float a);
		
		bool collision(const Sphere &s) const;
		bool collision(const Ray &r) const;
		bool collision(const Box & b) const;
		bool collision(const Plane &p) const;
		
		bool onPlane(const Punkt3D &p) const;
		bool getIntersectionPoint(const Ray &r, Punkt3D *p) const;
		float dist(Punkt3D p) const;
};

} // namespace segl

#endif