Plane.h

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// File name: math.h
// Des: Class safhe(Plane)
// Date: 17/10/1385
// Programmer: Ali Akbar Mohammadi(Kochol)

#ifndef PLANE_H
#define PLANE_H

#include "Vector.h"
#include "Matrix.h"

namespace kge
{
namespace math
{
class Sphere;
class AABB;
struct Ray;

class KGE_API Plane
{
public:
        Vector m_vNormal;                                       // plane normal vector
    float  m_fDistance;                                 // distance to origin
        float  m_fA , m_fB , m_fC , m_fD;       // ax + by + cz + d = 0

        Plane() { /* nothing to do */ }

        CollisionType Collision(const Sphere* pSphere) const;

        CollisionType Collision(const AABB* pBox) const;

        void Set(const Vector &vNormal, const Vector &vPoint);

        void Set(const Vector &vNormal, const Vector &vPoint, float fDistance);

        void Set(const Vector &v0, const Vector &v1, const Vector &v2);

        void Set( float a , float b , float c , float d );

        inline float GetDistance(const Vector& vPoint ) const;

        Matrix* GetReflectMatrix();

        Matrix* GetShadowMatrix( Vector &vLightDir );

        void Normalize();

        bool GetIntersectionWithPlane(Plane *Other, Ray &outRay);

        bool GetIntersectionWithLine(Ray *Other, Vector &outPoint);

        bool GetIntersectionWithPlanes(Plane *o1, Plane *o2, Vector &outPoint);

        float DotCoord(const Vector& v) const;

        float DotNormal(const Vector& v) const;

protected:
        Vector m_vPoint;                                        // point on plane

        inline void CalcABCD();

}; // Plane

} // math

} // kge

#endif // PLANE_H