#ifndef SPHERE_H
#define SPHERE_H

#include "entity.h"

class Sphere : public Entity
{
public:
	Sphere(const vector3d&center, double radius) {c = center; r = radius;}
	virtual ~Sphere() {}
	virtual RayIntersect CalcRayIntersect(Ray ray, int flags, int special=-1);
	virtual vector3d CalcNormal(Ray ray, RayIntersect& ri);
	virtual void PathCompress(const Transform&,
							  queue<pair<Entity*,Transform> >&,
							  vector<Entity*>&);
	virtual int IntersectionTest(Ray ray, int flags, int special=-1);
	virtual void GridCollect(vector<EntityWrapBound>& vec)
		{
			EntityWrapBound ewb;
			ewb.E = this;
			ewb.lo = c - vec_one * r;
			ewb.hi = c + vec_one * r;
			vec.push_back(ewb);
		}

	void SetCenter(const vector3d& v) {c = v;}
	void SetRadius(double v) {r = v;}
private:
	vector3d c;
	double r;
};

inline void Sphere::PathCompress(const Transform&T,
								 queue<pair<Entity*,Transform> >&Q,
								  vector<Entity*>&V)
{
	Sphere * sp = new Sphere(*this);
	sp->c = T * c;
	sp->r = r * pow(fabs(T.rot.Det()), 1.0/3.0);
	V.push_back(sp);
}

#endif