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_SHAPE_H 00037 #define PBRT_CORE_SHAPE_H 00038 00039 // core/shape.h* 00040 #include "pbrt.h" 00041 #include "geometry.h" 00042 #include "transform.h" 00043 #include "diffgeom.h" 00044 #include "memory.h" 00045 00046 // Shape Declarations 00047 class Shape : public ReferenceCounted { 00048 public: 00049 // Shape Interface 00050 Shape(const Transform *o2w, const Transform *w2o, bool ro); 00051 virtual ~Shape(); 00052 virtual BBox ObjectBound() const = 0; 00053 virtual BBox WorldBound() const; 00054 virtual bool CanIntersect() const; 00055 virtual void Refine(vector<Reference<Shape> > &refined) const; 00056 virtual bool Intersect(const Ray &ray, float *tHit, 00057 float *rayEpsilon, DifferentialGeometry *dg) const; 00058 virtual bool IntersectP(const Ray &ray) const; 00059 virtual void GetShadingGeometry(const Transform &obj2world, 00060 const DifferentialGeometry &dg, 00061 DifferentialGeometry *dgShading) const { 00062 *dgShading = dg; 00063 } 00064 virtual float Area() const; 00065 virtual Point Sample(float u1, float u2, Normal *Ns) const { 00066 Severe("Unimplemented Shape::Sample() method called"); 00067 return Point(); 00068 } 00069 virtual float Pdf(const Point &Pshape) const { 00070 return 1.f / Area(); 00071 } 00072 virtual Point Sample(const Point &P, float u1, float u2, 00073 Normal *Ns) const { 00074 return Sample(u1, u2, Ns); 00075 } 00076 virtual float Pdf(const Point &p, const Vector &wi) const; 00077 00078 // Shape Public Data 00079 const Transform *ObjectToWorld, *WorldToObject; 00080 const bool ReverseOrientation, TransformSwapsHandedness; 00081 const uint32_t shapeId; 00082 static uint32_t nextshapeId; 00083 }; 00084 00085 00086 00087 #endif // PBRT_CORE_SHAPE_H