ShapePlane.h

#pragma once

namespace ParaEngine
{
    class CShapeAABB;
    #define PLANE_EPSILON       (1.0e-7f)

    class CShapePlane : Plane
    {
    
        CShapePlane&    Zero();
        CShapePlane&    Set(float nx, float ny, float nz, float _d);
        CShapePlane&    Set(const Vector3& p, const Vector3& _n);
        CShapePlane&    Set(const Vector3& p0, const Vector3& p1, const Vector3& p2);

        enum Side
        {
            NO_SIDE,
            POSITIVE_SIDE,
            NEGATIVE_SIDE,
            BOTH_SIDE
        };
        Side getSide (const Vector3& rkPoint) const;

        Side getSide (const CShapeAABB& rkBox) const;

        Side getSide (const Vector3& centre, const Vector3& halfSize) const;


        float   Distance(const Vector3& p)const;
        bool    Belongs(const Vector3& p)const;

        void    Normalize();

        // Cast operators
        operator Vector3()  const;
        operator Vector4() const;

        // Arithmetic operators
        CShapePlane operator*(const Matrix4& m)     const;
        CShapePlane&    operator*=(const Matrix4& m);
    };
}