Box.hxx

   1 #ifndef BOX_HXX
   2 #define BOX_HXX
   3
   4 #include "Ray.hxx"
   5
   6 class Box
   7 {
   8 public:
   9   Box();
  10   Box(Vec3f min, Vec3f max);
  11   ~Box();
  12
  13   Box(const Box& b);
  14   Box& operator=(const Box& b);
  15
  16   //! Extend the bounding box to contain point a
  17   void Extend(const Vec3f& a);
  18   //! Clear the bounding box, i.e. set dimensions to infinity.
  19   void Clear();
  20   //! Extend the box to contain the given box.
  21   void Extend(const Box& box);
  22   //! Test for overlap with the given box b.
  23   bool Overlaps(const Box& b) const;
  24   //! Clip the given ray against the box. tnear and tfar should be filled by this function!
  25   void Clip(const Ray& ray, float& tnear,float& tfar) const;
  26
  27   //! Query the dimension of the bounding box.
  28   const Vec3f& min() const;
  29   const Vec3f& max() const;
  30 private:
  31   Vec3f m_min, m_max;
  32   bool OverlapsHelper(Box b) const;
  33 };
  34
  35 #endif