void CBSPMapData::SetLightsFromLightSourceFaces()
{
vector<CMapFace> vecTempLightSourceFace; // temporary buffer to hold light source faces
size_t i,j;
size_t iNumInteriorFaces = m_aInteriorFace.size();
for(i=0; i<iNumInteriorFaces; i++)
{ // set all the flags of light source faces to false
m_aInteriorFace[i].m_bFlag = false;
}
// cluster light source faces
for(i=0; i<iNumInteriorFaces; i++)
{
vecTempLightSourceFace.clear();
CMapFace& rFace1 = m_aInteriorFace[i];
if( !rFace1.ReadTypeFlag(CMapFace::TYPE_LIGHTSOURCE) )
continue; // doesn't emit light by itself
if( rFace1.m_bFlag == true )
continue; // already registered as a light source face
rFace1.m_bFlag = true;
vecTempLightSourceFace.push_back( rFace1 );
// adjacent light source faces are converted into one point light
SearchAdjacentLightSourceFaces_r( &vecTempLightSourceFace, rFace1, &m_aInteriorFace );
// convert each cluster of light source faces into a point light
AABB3 aabb;
aabb.Nullify();
for(j=0; j<vecTempLightSourceFace.size(); j++)
vecTempLightSourceFace[j].AddToAABB( aabb );
SPointLightDesc light = FindPointLightDesc( rFace1.m_acSurfaceName );
CPointLight* pPointLight = new CPointLight;
pPointLight->vPosition = aabb.GetCenterPosition();
pPointLight->Color.fRed = light.fRed;
pPointLight->Color.fGreen = light.fGreen;
pPointLight->Color.fBlue = light.fBlue;
pPointLight->fIntensity = light.fIntensity;
pPointLight->fAttenuation0 = light.fAttenuation[0];
pPointLight->fAttenuation1 = light.fAttenuation[1];
pPointLight->fAttenuation2 = light.fAttenuation[2];
m_vecpLight.push_back( pPointLight );
}
}
inline bool Camera::ViewFrustumIntersectsWith( const AABB3& raabb ) const
{
int i;
float d;
Vector3 vCenter, vExtents;
vCenter = raabb.GetCenterPosition();
vExtents = raabb.GetExtents();
for( i=0; i<6; i++ )
{
const SPlane& rPlane = m_WorldBSPTree[i].plane;
d = Vec3Dot( rPlane.normal, vCenter ) - rPlane.dist - raabb.GetRadiusForPlane(rPlane);
if(0 < d)
return false;
}
return true;
}
