#ifndef __TRIANGLE3_H
#define __TRIANGLE3_H

#include "Vector3.h"


namespace GtpVisibilityPreprocessor {

class AxisAlignedBox3;
class Ray;


struct Triangle3 
{
	Triangle3() {};
	Triangle3(const Vector3 &a, const Vector3 &b, const Vector3 &c);

	void Init(const Vector3 &a, const Vector3 &b, const Vector3 &c);

	Vector3 GetNormal() const;

	Vector3 GetCenter() const;

	float GetSpatialAngle(const Vector3 &point) const;

	float GetArea() const;

	/// returns bounding box around this triangle
	AxisAlignedBox3 GetBoundingBox() const;

	/// Casts ray into this triangle. Returns hit
	int CastRay(const Ray &ray, float &t, const float nearestT) const;

	//////////////////////////////

	/// the triangle vertices
	Vector3 mVertices[3];
};

}

#endif