Box.cxx

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