NeL: NL3D::CInstanceLighter::CPointLightRT struct Reference

Constructor & Destructor Documentation

NL3D::CInstanceLighter::CPointLightRT::CPointLightRT

(

)

Definition at line 947 of file instance_lighter.cpp.

References RefCount.

00948 {
00949         RefCount= 0;
00950 }

Member Function Documentation

bool NL3D::CInstanceLighter::CPointLightRT::testRaytrace	(	const CVector &	v,
		sint	instanceComputed = -1
	)

Tells if a point is visible from this light. NB: test first if in BSphere. If occluded or out of radius, return false, else return true. if instanceComputed>=0, then skip obstacles with InstanceId==instanceComputed. Also Skip if the light is an Ambient, and skip if the light is a spot and if the position is out of the cone

Definition at line 954 of file instance_lighter.cpp.

References BSphere, NLMISC::CBSphere::Center, NL3D::CPointLight::computeLinearAttenuation(), FaceCubeGrid, NL3D::CInstanceLighter::CTriangle::getPlane(), NL3D::CCubeGrid< const CTriangle * >::getSel(), NL3D::CPointLight::getType(), NLMISC::CBSphere::include(), NL3D::CInstanceLighter::CTriangle::InstanceId, NLMISC::CTriangle::intersect(), NL3D::CCubeGrid< const CTriangle * >::isEndSel(), NL3D::CCubeGrid< const CTriangle * >::nextSel(), PointLight, NL3D::CCubeGrid< const CTriangle * >::select(), sint, NL3D::CInstanceLighter::CTriangle::Triangle, and v.

Referenced by NL3D::CInstanceLighter::processIGPointLightRT().

00955 {
00956         CVector dummy;
00957 
00958         if(!BSphere.include(v))
00959                 return false;
00960 
00961         // If Ambient light, just skip
00962         if(PointLight.getType()== CPointLight::AmbientLight)
00963                 return false;
00964 
00965         // If SpotLight verify in angle radius.
00966         if(PointLight.getType()== CPointLight::SpotLight)
00967         {
00968                 float   att= PointLight.computeLinearAttenuation(v);
00969                 if (att==0)
00970                         return false;
00971         }
00972 
00973 
00974         // Select in the cubeGrid
00975         FaceCubeGrid.select(v);
00976         // For all faces selected
00977         while(!FaceCubeGrid.isEndSel())
00978         {
00979                 const CTriangle *tri= FaceCubeGrid.getSel();
00980 
00981                 // If the triangle is not a triangle of the instance currenlty lighted
00982                 if( instanceComputed<0 || tri->InstanceId != instanceComputed )
00983                 {
00984                         // If intersect, the point is occluded.
00985                         if( tri->Triangle.intersect(BSphere.Center, v, dummy, tri->getPlane()) )
00986                                 return false;
00987                 }
00988 
00989                 // next
00990                 FaceCubeGrid.nextSel();
00991         }
00992 
00993         // Ok the point is visilbe from the light
00994         return true;
00995 }


Public Member Functions
	CPointLightRT ()
bool	testRaytrace (const CVector &v, sint instanceComputed=-1)
Data Fields
NLMISC::CBSphere	BSphere
uint	DstId
CCubeGrid< const CTriangle * >	FaceCubeGrid
float	OODeltaAttenuation
CPointLightNamed	PointLight
uint	RefCount

NL3D::CInstanceLighter::CPointLightRT Struct Reference

Detailed Description

Public Member Functions

Data Fields

Constructor & Destructor Documentation

Member Function Documentation

Field Documentation