Scene.cxx

   1 #include "Scene.hxx"
   2 #include "PerspectiveCamera.hxx"
   3 #include <limits>
   4
   5 Scene::Scene()
   6   : m_camera(new PerspectiveCamera(Vec3f(0,0,8),
   7                                    Vec3f(0,0,-1),
   8                                    Vec3f(0,1,0),
   9                                    50,
  10                                    640,
  11                                    480)
  12              ),
  13     m_bgColor(Vec3f(0,0,0))
  14 {
  15 }
  16
  17 Scene::~Scene()
  18 {
  19   delete m_camera;
  20 }
  21
  22 Scene::Scene(const Scene& s)
  23 {
  24   operator=(s);
  25 }
  26
  27 Scene&
  28 Scene::operator=(const Scene& s)
  29 {
  30   return *this;
  31 }
  32
  33 void
  34 Scene::Add(Primitive* p)
  35 {
  36   m_primitives.push_back(p);
  37 }
  38
  39
  40 bool
  41 Scene::Intersect(Ray& ray)
  42 {
  43   bool hit = false;
  44   float t = std::numeric_limits<float>::max();
  45   for (std::vector<Primitive*>::iterator i = m_primitives.begin();
  46     i != m_primitives.end(); i++) {
  47     // store closest object hit
  48     if (hit |= (*i)->Intersect(ray)) {
  49       if (ray.t() < t) {
  50         ray.setHit(*i);
  51         t = ray.t();
  52       }
  53     }
  54   }
  55   return hit;
  56 }
  57
  58 bool
  59 Scene::Occluded(Ray& ray)
  60 {
  61   return false;
  62 }
  63
  64 Vec3f
  65 Scene::RayTrace(Ray& ray)
  66 {
  67   if (Intersect(ray)) {
  68     return ray.hit()->shader()->Shade(ray);
  69   } else {
  70     return Vec3f(0,0,0);
  71   }
  72 }
  73
  74 const Camera*
  75 Scene::camera() const
  76 {
  77   return m_camera;
  78 }