QuadAreaLight.hxx

   1 #ifndef QUADAREALIGHT_HXX
   2 #define QUADAREALIGHT_HXX
   3
   4 #include "Light.hxx"
   5
   6 class QuadAreaLight : public Light
   7 {
   8 public:
   9   //! Points p1 to p4 are assumed to define a planar rectangular region and have to be given counter-clockwise
  10   QuadAreaLight(Scene* scene, const Vec3f& intensity, const Vec3f& p1, const Vec3f& p2, const Vec3f& p3, const Vec3f& p4);
  11   virtual ~QuadAreaLight();
  12
  13   virtual bool Illuminate(Ray& shadow_ray, Vec3f& intensity);
  14   virtual bool IsArea();
  15
  16   const Vec3f& GetNormal(const Vec3f& position) const;
  17
  18 private:
  19   QuadAreaLight();
  20
  21   // defines the quad by one point and to vectors
  22   Vec3f m_p0, m_e1, m_e2;
  23   // normal
  24   Vec3f m_n;
  25   // emission(red, green, blue)
  26   Vec3f m_intensity;
  27   // area
  28   float m_area;
  29 };
  30 #endif