ReflectiveEyeLightShader.cxx

   1 #include "ReflectiveEyeLightShader.hxx"
   2 #include "Primitive.hxx"
   3 #include "Scene.hxx"
   4
   5 ReflectiveEyeLightShader::ReflectiveEyeLightShader(Scene* scene,
   6                                                    float reflectivity,
   7                                                    const Vec3f& color)
   8   : EyeLightShader(scene,color),
   9     m_reflectivity(reflectivity)
  10 {
  11 }
  12
  13 ReflectiveEyeLightShader::~ReflectiveEyeLightShader()
  14 {
  15 }
  16
  17 ReflectiveEyeLightShader::ReflectiveEyeLightShader()
  18   : EyeLightShader(0),
  19     m_reflectivity(0)
  20 {
  21 }
  22
  23 Vec3f
  24 ReflectiveEyeLightShader::Shade(Ray& ray)
  25 {
  26   Vec3f eyeColor = EyeLightShader::Shade(ray);
  27   Vec3f reflColor;
  28
  29   // shoot secondary rays from intersection
  30   Vec3f n = ray.hit()->GetNormal(ray);
  31   Ray sec(ray.origin() + ray.direction() * ray.t(), ray.direction() + n * 2);
  32   sec.setRecursionDepth(ray.recursionDepth() - 1);
  33
  34   if(ray.recursionDepth() > 0 && m_scene->Intersect(sec)) {
  35     reflColor = Shade(sec);
  36   }
  37   return eyeColor + reflColor;
  38 }