void NormalBlendMap::ComputeAverage (const Vector3d& EPoint, Vector3d& normal, Intersection *Inter, const Ray *ray, TraceThreadData *Thread)
{
SNGL Value;
SNGL Total = 0.0;
Vector3d V1,V2;
POV_BLEND_MAP_ASSERT(Type == kBlendMapType_Normal);
V1 = Vector3d(0.0, 0.0, 0.0);
for(Vector::const_iterator i = Blend_Map_Entries.begin(); i != Blend_Map_Entries.end(); i++)
{
Value = i->value;
V2 = normal;
Perturb_Normal(V2,i->Vals,EPoint,Inter,ray,Thread);
V1 += (DBL)Value * V2;
Total += Value;
}
normal = V1 / Total;
}
void NormalBlendMap::Post(bool dontScaleBumps)
{
POV_BLEND_MAP_ASSERT(Type == kBlendMapType_Normal);
for(Vector::iterator i = Blend_Map_Entries.begin(); i != Blend_Map_Entries.end(); i++)
{
if (dontScaleBumps)
i->Vals->Flags |= DONT_SCALE_BUMPS_FLAG;
Post_Tnormal(i->Vals);
}
}
void SlopeBlendMap::Post(bool dontScaleBumps)
{
POV_BLEND_MAP_ASSERT(Type == kBlendMapType_Slope);
}
void SlopeBlendMap::ComputeAverage (const Vector3d& EPoint, Vector3d& normal, Intersection *Inter, const Ray *ray, TraceThreadData *Thread)
{
POV_BLEND_MAP_ASSERT(false);
}
NormalBlendMap::~NormalBlendMap()
{
POV_BLEND_MAP_ASSERT(Type == kBlendMapType_Normal);
for (Vector::iterator i = Blend_Map_Entries.begin(); i != Blend_Map_Entries.end(); i++)
Destroy_Tnormal(i->Vals);
}
SlopeBlendMap::~SlopeBlendMap()
{
POV_BLEND_MAP_ASSERT(Type == kBlendMapType_Slope);
}
TextureBlendMapPtr Create_Blend_Map<TextureBlendMap> (BlendMapTypeId type)
{
POV_BLEND_MAP_ASSERT(type == kBlendMapType_Texture);
return TextureBlendMapPtr (new TextureBlendMap);
}
NormalBlendMapPtr Create_Blend_Map<NormalBlendMap> (BlendMapTypeId type)
{
POV_BLEND_MAP_ASSERT(type == kBlendMapType_Normal);
return NormalBlendMapPtr (new NormalBlendMap());
}
SlopeBlendMapPtr Create_Blend_Map<SlopeBlendMap> (BlendMapTypeId type)
{
POV_BLEND_MAP_ASSERT(type == kBlendMapType_Slope);
return SlopeBlendMapPtr (new SlopeBlendMap());
}
PigmentBlendMapPtr Create_Blend_Map<PigmentBlendMap> (BlendMapTypeId type)
{
POV_BLEND_MAP_ASSERT((type == kBlendMapType_Pigment) || (type == kBlendMapType_Density));
return PigmentBlendMapPtr (new PigmentBlendMap(type));
}
ColourBlendMapPtr Create_Blend_Map<ColourBlendMap> (BlendMapTypeId type)
{
POV_BLEND_MAP_ASSERT(type == kBlendMapType_Colour);
return ColourBlendMapPtr (new ColourBlendMap);
}