00001 00002 /* 00003 pbrt source code Copyright(c) 1998-2010 Matt Pharr and Greg Humphreys. 00004 00005 This file is part of pbrt. 00006 00007 pbrt is free software; you can redistribute it and/or modify 00008 it under the terms of the GNU General Public License as published by 00009 the Free Software Foundation; either version 2 of the License, or 00010 (at your option) any later version. Note that the text contents of 00011 the book "Physically Based Rendering" are *not* licensed under the 00012 GNU GPL. 00013 00014 pbrt is distributed in the hope that it will be useful, 00015 but WITHOUT ANY WARRANTY; without even the implied warranty of 00016 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00017 GNU General Public License for more details. 00018 00019 You should have received a copy of the GNU General Public License 00020 along with this program. If not, see <http://www.gnu.org/licenses/>. 00021 00022 */ 00023 00024 #if defined(_MSC_VER) 00025 #pragma once 00026 #endif 00027 00028 #ifndef PBRT_CORE_INTERSECTION_H 00029 #define PBRT_CORE_INTERSECTION_H 00030 00031 // core/intersection.h* 00032 #include "pbrt.h" 00033 #include "diffgeom.h" 00034 #include "transform.h" 00035 00036 // Intersection Declarations 00037 struct Intersection { 00038 // Intersection Public Methods 00039 Intersection() { 00040 primitive = NULL; 00041 shapeId = primitiveId = 0; 00042 rayEpsilon = 0.f; 00043 } 00044 BSDF *GetBSDF(const RayDifferential &ray, MemoryArena &arena) const; 00045 BSSRDF *GetBSSRDF(const RayDifferential &ray, MemoryArena &arena) const; 00046 Spectrum Le(const Vector &wo) const; 00047 00048 // Intersection Public Data 00049 DifferentialGeometry dg; 00050 const Primitive *primitive; 00051 Transform WorldToObject, ObjectToWorld; 00052 uint32_t shapeId, primitiveId; 00053 float rayEpsilon; 00054 }; 00055 00056 00057 00058 #endif // PBRT_CORE_INTERSECTION_H