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_CORE_PRIMITIVE_H 00037 #define PBRT_CORE_PRIMITIVE_H 00038 00039 // core/primitive.h* 00040 #include "pbrt.h" 00041 #include "shape.h" 00042 #include "material.h" 00043 00044 // Primitive Declarations 00045 class Primitive : public ReferenceCounted { 00046 public: 00047 // Primitive Interface 00048 Primitive() : primitiveId(nextprimitiveId++) { } 00049 virtual ~Primitive(); 00050 virtual BBox WorldBound() const = 0; 00051 virtual bool CanIntersect() const; 00052 virtual bool Intersect(const Ray &r, Intersection *in) const = 0; 00053 virtual bool IntersectP(const Ray &r) const = 0; 00054 virtual void Refine(vector<Reference<Primitive> > &refined) const; 00055 void FullyRefine(vector<Reference<Primitive> > &refined) const; 00056 virtual const AreaLight *GetAreaLight() const = 0; 00057 virtual BSDF *GetBSDF(const DifferentialGeometry &dg, 00058 const Transform &ObjectToWorld, MemoryArena &arena) const = 0; 00059 virtual BSSRDF *GetBSSRDF(const DifferentialGeometry &dg, 00060 const Transform &ObjectToWorld, MemoryArena &arena) const = 0; 00061 00062 // Primitive Public Data 00063 const uint32_t primitiveId; 00064 protected: 00065 // Primitive Protected Data 00066 static uint32_t nextprimitiveId; 00067 }; 00068 00069 00070 00071 // GeometricPrimitive Declarations 00072 class GeometricPrimitive : public Primitive { 00073 public: 00074 // GeometricPrimitive Public Methods 00075 bool CanIntersect() const; 00076 void Refine(vector<Reference<Primitive> > &refined) const; 00077 virtual BBox WorldBound() const; 00078 virtual bool Intersect(const Ray &r, Intersection *isect) const; 00079 virtual bool IntersectP(const Ray &r) const; 00080 GeometricPrimitive(const Reference<Shape> &s, 00081 const Reference<Material> &m, AreaLight *a); 00082 const AreaLight *GetAreaLight() const; 00083 BSDF *GetBSDF(const DifferentialGeometry &dg, 00084 const Transform &ObjectToWorld, MemoryArena &arena) const; 00085 BSSRDF *GetBSSRDF(const DifferentialGeometry &dg, 00086 const Transform &ObjectToWorld, MemoryArena &arena) const; 00087 private: 00088 // GeometricPrimitive Private Data 00089 Reference<Shape> shape; 00090 Reference<Material> material; 00091 AreaLight *areaLight; 00092 }; 00093 00094 00095 00096 // TransformedPrimitive Declarations 00097 class TransformedPrimitive : public Primitive { 00098 public: 00099 // TransformedPrimitive Public Methods 00100 TransformedPrimitive(Reference<Primitive> &prim, 00101 const AnimatedTransform &w2p) 00102 : primitive(prim), WorldToPrimitive(w2p) { } 00103 bool Intersect(const Ray &r, Intersection *in) const; 00104 bool IntersectP(const Ray &r) const; 00105 const AreaLight *GetAreaLight() const { return NULL; } 00106 BSDF *GetBSDF(const DifferentialGeometry &dg, 00107 const Transform &ObjectToWorld, MemoryArena &arena) const { 00108 return NULL; 00109 } 00110 BSSRDF *GetBSSRDF(const DifferentialGeometry &dg, 00111 const Transform &ObjectToWorld, MemoryArena &arena) const { 00112 return NULL; 00113 } 00114 BBox WorldBound() const { 00115 return WorldToPrimitive.MotionBounds(primitive->WorldBound(), true); 00116 } 00117 private: 00118 // TransformedPrimitive Private Data 00119 Reference<Primitive> primitive; 00120 const AnimatedTransform WorldToPrimitive; 00121 }; 00122 00123 00124 00125 // Aggregate Declarations 00126 class Aggregate : public Primitive { 00127 public: 00128 // Aggregate Public Methods 00129 const AreaLight *GetAreaLight() const; 00130 BSDF *GetBSDF(const DifferentialGeometry &dg, 00131 const Transform &, MemoryArena &) const; 00132 BSSRDF *GetBSSRDF(const DifferentialGeometry &dg, 00133 const Transform &, MemoryArena &) const; 00134 }; 00135 00136 00137 00138 #endif // PBRT_CORE_PRIMITIVE_H