00001
00002
00003
00004
00005
00006
00007
00008
00009
00010
00011
00012
00013
00014
00015
00016
00017
00018
00019
00020
00021
00022
00023
00024
00025
00026 #include "stdafx.h"
00027 #include "materials/mirror.h"
00028 #include "spectrum.h"
00029 #include "reflection.h"
00030 #include "paramset.h"
00031 #include "texture.h"
00032
00033
00034 BSDF *MirrorMaterial::GetBSDF(const DifferentialGeometry &dgGeom, const DifferentialGeometry &dgShading, MemoryArena &arena) const {
00035
00036 DifferentialGeometry dgs;
00037 if (bumpMap)
00038 Bump(bumpMap, dgGeom, dgShading, &dgs);
00039 else
00040 dgs = dgShading;
00041 BSDF *bsdf = BSDF_ALLOC(arena, BSDF)(dgs, dgGeom.nn);
00042 Spectrum R = Kr->Evaluate(dgs).Clamp();
00043 if (!R.IsBlack())
00044 bsdf->Add(BSDF_ALLOC(arena, SpecularReflection)(R,
00045 BSDF_ALLOC(arena, FresnelNoOp)()));
00046 return bsdf;
00047 }
00048
00049
00050 MirrorMaterial *CreateMirrorMaterial(const Transform &xform,
00051 const TextureParams &mp) {
00052 Reference<Texture<Spectrum> > Kr = mp.GetSpectrumTexture("Kr", Spectrum(0.9f));
00053 Reference<Texture<float> > bumpMap = mp.GetFloatTexture("bumpmap", 0.f);
00054 return new MirrorMaterial(Kr, bumpMap);
00055 }
00056
00057