Box.cxx

   1 #include "Box.hxx"
   2
   3 Box::Box() : m_min(Infinity, Infinity, Infinity),
   4   m_max(-Infinity, -Infinity, -Infinity)
   5 {
   6 }
   7
   8 Box::Box(Vec3f min, Vec3f max) : m_min(min), m_max(max)
   9 {
  10 }
  11
  12 Box::~Box()
  13 {
  14 }
  15
  16 Box::Box(const Box& b)
  17 {
  18   m_min = b.m_min;
  19   m_max = b.m_max;
  20 }
  21
  22 Box&
  23 Box::operator=(const Box& b)
  24 {
  25   m_min = b.m_min;
  26   m_max = b.m_max;
  27   return *this;
  28 }
  29
  30 void
  31 Box::Clear()
  32 {
  33 }
  34
  35 void
  36 Box::Extend(const Vec3f& a)
  37 {
  38   // for all three coordinates, move m_max or m_min to the point
  39   for(size_t i = 0; i < 3; i++) {
  40     if(a[i] > m_max[i]) {
  41       m_max[i] = a[i];
  42     } else if(a[i] < m_min[i]) {
  43       m_min[i] = a[i];
  44     } // else: do nothing, coordinate is inside the box
  45   }
  46 }
  47
  48 void
  49 Box::Extend(const Box& box)
  50 {
  51 }
  52
  53 bool
  54 Box::Overlaps(const Box& b) const
  55 {
  56   return false;
  57 }
  58
  59 void
  60 Box::Clip(const Ray& ray, float& tnear, float& tfar) const
  61 {
  62 }
  63
  64 const Vec3f&
  65 Box::min() const
  66 {
  67   return m_min;
  68 }
  69
  70 const Vec3f&
  71 Box::max() const
  72 {
  73   return m_max;
  74 }