| 1 | // Created on: 2013-08-27 |
| 2 | // Created by: Denis BOGOLEPOV |
| 3 | // Copyright (c) 2013-2014 OPEN CASCADE SAS |
| 4 | // |
| 5 | // This file is part of Open CASCADE Technology software library. |
| 6 | // |
| 7 | // This library is free software; you can redistribute it and/or modify it under |
| 8 | // the terms of the GNU Lesser General Public License version 2.1 as published |
| 9 | // by the Free Software Foundation, with special exception defined in the file |
| 10 | // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT |
| 11 | // distribution for complete text of the license and disclaimer of any warranty. |
| 12 | // |
| 13 | // Alternatively, this file may be used under the terms of Open CASCADE |
| 14 | // commercial license or contractual agreement. |
| 15 | |
| 16 | #ifndef _OpenGl_SceneGeometry_Header |
| 17 | #define _OpenGl_SceneGeometry_Header |
| 18 | |
| 19 | #include <BVH_Geometry.hxx> |
| 20 | #include <BVH_Triangulation.hxx> |
| 21 | #include <NCollection_StdAllocator.hxx> |
| 22 | #include <OpenGl_PrimitiveArray.hxx> |
| 23 | #include <OpenGl_Structure.hxx> |
| 24 | |
| 25 | namespace OpenGl_Raytrace |
| 26 | { |
| 27 | //! Checks to see if the group contains ray-trace geometry. |
| 28 | Standard_Boolean IsRaytracedGroup (const OpenGl_Group* theGroup); |
| 29 | |
| 30 | //! Checks to see if the element contains ray-trace geometry. |
| 31 | Standard_Boolean IsRaytracedElement (const OpenGl_ElementNode* theNode); |
| 32 | |
| 33 | //! Checks to see if the structure contains ray-trace geometry. |
| 34 | Standard_Boolean IsRaytracedStructure (const OpenGl_Structure* theStructure); |
| 35 | } |
| 36 | |
| 37 | //! Stores properties of surface material. |
| 38 | class OpenGl_RaytraceMaterial |
| 39 | { |
| 40 | public: |
| 41 | |
| 42 | //! Ambient reflection coefficient. |
| 43 | BVH_Vec4f Ambient; |
| 44 | |
| 45 | //! Diffuse reflection coefficient. |
| 46 | BVH_Vec4f Diffuse; |
| 47 | |
| 48 | //! Glossy reflection coefficient. |
| 49 | BVH_Vec4f Specular; |
| 50 | |
| 51 | //! Material emission. |
| 52 | BVH_Vec4f Emission; |
| 53 | |
| 54 | //! Specular reflection coefficient. |
| 55 | BVH_Vec4f Reflection; |
| 56 | |
| 57 | //! Specular refraction coefficient. |
| 58 | BVH_Vec4f Refraction; |
| 59 | |
| 60 | //! Material transparency. |
| 61 | BVH_Vec4f Transparency; |
| 62 | |
| 63 | public: |
| 64 | |
| 65 | //! Creates new default material. |
| 66 | OpenGl_RaytraceMaterial(); |
| 67 | |
| 68 | //! Creates new material with specified properties. |
| 69 | OpenGl_RaytraceMaterial (const BVH_Vec4f& theAmbient, |
| 70 | const BVH_Vec4f& theDiffuse, |
| 71 | const BVH_Vec4f& theSpecular); |
| 72 | |
| 73 | //! Creates new material with specified properties. |
| 74 | OpenGl_RaytraceMaterial (const BVH_Vec4f& theAmbient, |
| 75 | const BVH_Vec4f& theDiffuse, |
| 76 | const BVH_Vec4f& theSpecular, |
| 77 | const BVH_Vec4f& theEmission, |
| 78 | const BVH_Vec4f& theTranspar); |
| 79 | |
| 80 | //! Creates new material with specified properties. |
| 81 | OpenGl_RaytraceMaterial (const BVH_Vec4f& theAmbient, |
| 82 | const BVH_Vec4f& theDiffuse, |
| 83 | const BVH_Vec4f& theSpecular, |
| 84 | const BVH_Vec4f& theEmission, |
| 85 | const BVH_Vec4f& theTranspar, |
| 86 | const BVH_Vec4f& theReflection, |
| 87 | const BVH_Vec4f& theRefraction); |
| 88 | |
| 89 | //! Returns packed (serialized) representation of material. |
| 90 | const Standard_ShortReal* Packed() |
| 91 | { |
| 92 | return reinterpret_cast<Standard_ShortReal*> (this); |
| 93 | } |
| 94 | }; |
| 95 | |
| 96 | //! Stores properties of OpenGL light source. |
| 97 | class OpenGl_RaytraceLight |
| 98 | { |
| 99 | public: |
| 100 | |
| 101 | //! Diffuse intensity (in terms of OpenGL). |
| 102 | BVH_Vec4f Diffuse; |
| 103 | |
| 104 | //! Position of light source (in terms of OpenGL). |
| 105 | BVH_Vec4f Position; |
| 106 | |
| 107 | public: |
| 108 | |
| 109 | //! Creates new light source. |
| 110 | OpenGl_RaytraceLight (const BVH_Vec4f& theDiffuse, |
| 111 | const BVH_Vec4f& thePosition); |
| 112 | |
| 113 | //! Returns packed (serialized) representation of light source. |
| 114 | const Standard_ShortReal* Packed() |
| 115 | { |
| 116 | return reinterpret_cast<Standard_ShortReal*> (this); |
| 117 | } |
| 118 | }; |
| 119 | |
| 120 | //! Triangulation of single OpenGL primitive array. |
| 121 | class OpenGl_TriangleSet : public BVH_Triangulation<Standard_ShortReal, 4> |
| 122 | { |
| 123 | public: |
| 124 | |
| 125 | BVH_Array4f Normals; //!< Array of vertex normals |
| 126 | |
| 127 | public: |
| 128 | |
| 129 | //! Creates new OpenGL element triangulation. |
| 130 | OpenGl_TriangleSet() |
| 131 | : BVH_Triangulation<Standard_ShortReal, 4>() |
| 132 | { |
| 133 | // |
| 134 | } |
| 135 | |
| 136 | //! Releases resources of OpenGL element triangulation. |
| 137 | ~OpenGl_TriangleSet() |
| 138 | { |
| 139 | // |
| 140 | } |
| 141 | }; |
| 142 | |
| 143 | //! Stores geometry of ray-tracing scene. |
| 144 | class OpenGl_RaytraceGeometry : public BVH_Geometry<Standard_ShortReal, 4> |
| 145 | { |
| 146 | public: |
| 147 | |
| 148 | //! Value of invalid offset to return in case of errors. |
| 149 | static const Standard_Integer INVALID_OFFSET = -1; |
| 150 | |
| 151 | public: |
| 152 | |
| 153 | //! Array of properties of light sources. |
| 154 | std::vector<OpenGl_RaytraceLight, |
| 155 | NCollection_StdAllocator<OpenGl_RaytraceLight> > Sources; |
| 156 | |
| 157 | //! Array of 'front' material properties. |
| 158 | std::vector<OpenGl_RaytraceMaterial, |
| 159 | NCollection_StdAllocator<OpenGl_RaytraceMaterial> > Materials; |
| 160 | |
| 161 | //! Global ambient from all light sources. |
| 162 | BVH_Vec4f Ambient; |
| 163 | |
| 164 | public: |
| 165 | |
| 166 | //! Creates uninitialized ray-tracing geometry. |
| 167 | OpenGl_RaytraceGeometry() |
| 168 | : BVH_Geometry<Standard_ShortReal, 4>(), |
| 169 | myHighLevelTreeDepth (0), |
| 170 | myBottomLevelTreeDepth (0) |
| 171 | { |
| 172 | // |
| 173 | } |
| 174 | |
| 175 | //! Releases resources of ray-tracing geometry. |
| 176 | ~OpenGl_RaytraceGeometry() |
| 177 | { |
| 178 | // |
| 179 | } |
| 180 | |
| 181 | //! Clears ray-tracing geometry. |
| 182 | void Clear(); |
| 183 | |
| 184 | public: |
| 185 | |
| 186 | //! Performs post-processing of high-level scene BVH. |
| 187 | Standard_Boolean ProcessAcceleration(); |
| 188 | |
| 189 | //! Returns offset of bottom-level BVH for given leaf node. |
| 190 | //! If the node index is not valid the function returns -1. |
| 191 | //! @note Can be used after processing acceleration structure. |
| 192 | Standard_Integer AccelerationOffset (Standard_Integer theNodeIdx); |
| 193 | |
| 194 | //! Returns offset of triangulation vertices for given leaf node. |
| 195 | //! If the node index is not valid the function returns -1. |
| 196 | //! @note Can be used after processing acceleration structure. |
| 197 | Standard_Integer VerticesOffset (Standard_Integer theNodeIdx); |
| 198 | |
| 199 | //! Returns offset of triangulation elements for given leaf node. |
| 200 | //! If the node index is not valid the function returns -1. |
| 201 | //! @note Can be used after processing acceleration structure. |
| 202 | Standard_Integer ElementsOffset (Standard_Integer theNodeIdx); |
| 203 | |
| 204 | //! Returns triangulation data for given leaf node. |
| 205 | //! If the node index is not valid the function returns NULL. |
| 206 | //! @note Can be used after processing acceleration structure. |
| 207 | OpenGl_TriangleSet* TriangleSet (Standard_Integer theNodeIdx); |
| 208 | |
| 209 | //! Returns depth of high-level scene BVH from last build. |
| 210 | Standard_Integer HighLevelTreeDepth() const |
| 211 | { |
| 212 | return myHighLevelTreeDepth; |
| 213 | } |
| 214 | |
| 215 | //! Returns maximum depth of bottom-level scene BVHs from last build. |
| 216 | Standard_Integer BottomLevelTreeDepth() const |
| 217 | { |
| 218 | return myBottomLevelTreeDepth; |
| 219 | } |
| 220 | |
| 221 | protected: |
| 222 | |
| 223 | Standard_Integer myHighLevelTreeDepth; //!< Depth of high-level scene BVH from last build |
| 224 | Standard_Integer myBottomLevelTreeDepth; //!< Maximum depth of bottom-level scene BVHs from last build |
| 225 | |
| 226 | }; |
| 227 | |
| 228 | #endif |