PBRT
/home/felix/UBC/projects/AdaptiveLightfieldSampling/pbrt_v2/src/core/primitive.h
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