00001 #include <esg/emittance/PointEmittance.h>
00002
00003 using namespace esg;
00004
00005 Sphere PointEmittance::_stochasticEmitter = Sphere(0., 0., 0., 1.);
00006
00007 Emittance* PointEmittance::clone() const {
00008 PointEmittance * pRet = new PointEmittance();
00009 pRet->_duplicate_attributes(*this);
00010 return pRet;
00011 }
00012
00013 bool PointEmittance::intensity(const Vector3& v, Color3f& c) const
00014 {
00015 Vector3 dir(v - _location);
00016 float d = dir.length();
00017 c.set(_intensity);
00018 ESG_ATTENUATION(d, c);
00019 return true;
00020 }
00021
00022 bool PointEmittance::intensity(const Vector3&, float d, Color3f& c) const
00023 {
00024 c.set(_intensity);
00025 ESG_ATTENUATION(d, c);
00026 return true;
00027 }
00028
00029 bool PointEmittance::stochasticEmission(Vector3& d)
00030 {
00031 PointEnv pe;
00032 _stochasticEmitter.randomSample(ENV_WANT_SURFACE_POINT, pe, NULL);
00033 if (!(pe.mask & ENV_HAVE_SURFACE_POINT)) return false;
00034 d.set(pe.intersection);
00035 return true;
00036 }
