PBRT
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00001 00002 /* 00003 pbrt source code Copyright(c) 1998-2012 Matt Pharr and Greg Humphreys. 00004 00005 This file is part of pbrt. 00006 00007 Redistribution and use in source and binary forms, with or without 00008 modification, are permitted provided that the following conditions are 00009 met: 00010 00011 - Redistributions of source code must retain the above copyright 00012 notice, this list of conditions and the following disclaimer. 00013 00014 - Redistributions in binary form must reproduce the above copyright 00015 notice, this list of conditions and the following disclaimer in the 00016 documentation and/or other materials provided with the distribution. 00017 00018 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS 00019 IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 00020 TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A 00021 PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 00022 HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 00023 SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 00024 LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 00025 DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 00026 THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 00027 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 00028 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 00029 00030 */ 00031 00032 #if defined(_MSC_VER) 00033 #pragma once 00034 #endif 00035 00036 #ifndef PBRT_INTEGRATORS_DIPOLESUBSURFACE_H 00037 #define PBRT_INTEGRATORS_DIPOLESUBSURFACE_H 00038 00039 // integrators/dipolesubsurface.h* 00040 #include "pbrt.h" 00041 #include "integrator.h" 00042 #include "kdtree.h" 00043 #include "renderers/surfacepoints.h" 00044 struct SubsurfaceOctreeNode; 00045 00046 // DipoleSubsurfaceIntegrator Helper Declarations 00047 struct IrradiancePoint { 00048 IrradiancePoint() { } 00049 IrradiancePoint(const SurfacePoint &sp, const Spectrum &ee) 00050 : p(sp.p), n(sp.n), E(ee), area(sp.area), 00051 rayEpsilon(sp.rayEpsilon) { } 00052 Point p; 00053 Normal n; 00054 Spectrum E; 00055 float area, rayEpsilon; 00056 }; 00057 00058 00059 00060 // DipoleSubsurfaceIntegrator Declarations 00061 class DipoleSubsurfaceIntegrator : public SurfaceIntegrator { 00062 public: 00063 // DipoleSubsurfaceIntegrator Public Methods 00064 DipoleSubsurfaceIntegrator(int mdepth, float merror, float mindist, 00065 const string &fn) { 00066 maxSpecularDepth = mdepth; 00067 maxError = merror; 00068 minSampleDist = mindist; 00069 filename = fn; 00070 octree = NULL; 00071 } 00072 ~DipoleSubsurfaceIntegrator(); 00073 Spectrum Li(const Scene *scene, const Renderer *renderer, 00074 const RayDifferential &ray, const Intersection &isect, const Sample *sample, 00075 RNG &rng, MemoryArena &arena) const; 00076 void RequestSamples(Sampler *sampler, Sample *sample, const Scene *scene); 00077 void Preprocess(const Scene *, const Camera *, const Renderer *); 00078 private: 00079 // DipoleSubsurfaceIntegrator Private Data 00080 int maxSpecularDepth; 00081 float maxError, minSampleDist; 00082 string filename; 00083 vector<IrradiancePoint> irradiancePoints; 00084 BBox octreeBounds; 00085 SubsurfaceOctreeNode *octree; 00086 MemoryArena octreeArena; 00087 00088 // Declare sample parameters for light source sampling 00089 LightSampleOffsets *lightSampleOffsets; 00090 BSDFSampleOffsets *bsdfSampleOffsets; 00091 }; 00092 00093 00094 DipoleSubsurfaceIntegrator *CreateDipoleSubsurfaceIntegrator(const ParamSet ¶ms); 00095 00096 #endif // PBRT_INTEGRATORS_DIPOLESUBSURFACE_H