1 | #ifndef _ViewCellsManager_H__
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2 | #define _ViewCellsManager_H__
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3 |
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4 | #include "Ray.h"
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5 | #include "VssRay.h"
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6 | #include "Containers.h"
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7 |
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8 | class ViewCell;
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9 | class Intersectable;
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10 | class RenderSimulator;
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11 | class Mesh;
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12 | struct Triangle3;
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13 | class SimulationStatistics;
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14 | class BspTree;
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15 | class KdTree;
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16 | class VspKdTree;
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17 | class VspBspTree;
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18 | class KdNode;
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19 | class KdLeaf;
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20 | class VspKdTree;
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21 | class AxisAlignedBox3;
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22 | /**
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23 | Manages different higher order operations on the view cells.
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24 | */
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25 | class ViewCellsManager
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26 | {
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27 |
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28 | public:
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29 |
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30 | /// view cell container types
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31 | enum {BSP, KD, VSP_KD, VSP_BSP};
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32 |
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33 | /** Constructor taking the maximal number of samples used for construction
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34 | */
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35 | ViewCellsManager(const int constructionSamples);
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36 |
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37 | ViewCellsManager();
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38 |
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39 | ~ViewCellsManager();
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40 |
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41 | /** Constructs view cell container with a given number of samples.
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42 | */
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43 | virtual int Construct(const ObjectContainer &objects,
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44 | const VssRayContainer &rays,
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45 | AxisAlignedBox3 *sceneBbox = NULL) = 0;
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46 |
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47 | /** Casts bundle of rays to the view cells and stores contributions in PVS.
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48 | */
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49 | int CastRays(const RayContainer &rays);
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50 |
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51 | /** Casts ray to the view cells and stores contributions in PVS.
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52 | */
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53 | virtual int CastRay(const Ray &ray) = 0;
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54 |
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55 | /** Post processes view cells givemŽa number of rays.
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56 | */
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57 | virtual int PostProcess(const ObjectContainer &objects,
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58 | const RayContainer &rays) = 0;
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59 |
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60 | /** Show visualization of the view cells.
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61 | */
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62 | virtual void Visualize(const ObjectContainer &objects,
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63 | const RayContainer &sampleRays) = 0;
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64 |
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65 | /** type of the view cell container.
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66 | */
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67 | virtual int GetType() const = 0;
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68 |
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69 | /** Simulates rendering with the given view cell partition.
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70 | @returns render time statistics
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71 | */
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72 | SimulationStatistics SimulateRendering() const;
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73 |
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74 | /** Load the input viewcells. The input viewcells should be given as a collection |
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75 | of meshes. Each mesh is assume to form a bounded polyhedron defining the interior of |
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76 | the viewcell. The method then builds a BSP tree of these view cells. |
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77 | |
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78 | @param filename file to load |
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79 | @return true on success |
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80 | */ |
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81 | bool LoadViewCells(const string filename);
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82 |
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83 | /** Constructs view cell from base triangle. The ViewCell is extruded along the normal vector.
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84 | @param the base triangle
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85 | @param the height of the newly created view cell
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86 | */
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87 | ViewCell *ExtrudeViewCell(const Triangle3 &baseTri, const float height) const;
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88 |
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89 | /** Merges two view cells.
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90 | @note the piercing rays of the front and back will be ordered
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91 | @returns new view cell based on the merging.
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92 | */
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93 | ViewCell *Merge(ViewCell &front, ViewCell &back) const;
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94 |
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95 | /** Generates view cell of type specified by this manager
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96 | */
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97 | virtual ViewCell *GenerateViewCell(Mesh *mesh = NULL) const;
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98 |
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99 | /** Adds a new view cell to the list of predefined view cells.
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100 | */
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101 | void AddViewCell(ViewCell *viewCell);
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102 |
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103 | /** Derive view cells from objects.
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104 | */
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105 | void DeriveViewCells(const ObjectContainer &objects,
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106 | ViewCellContainer &viewCells,
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107 | const int maxViewCells) const;
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108 |
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109 | /** Sets maximal number of samples used for the
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110 | construction of the view cells.
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111 | */
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112 | void SetVisualizationSamples(const int visSamples);
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113 |
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114 | /** Sets maximal number of samples used for the visualization of the view cells.
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115 | */
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116 | void SetConstructionSamples(const int constructionSamples);
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117 |
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118 | /** Sets maximal number of samples used for the post processing of the view cells.
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119 | */
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120 | void SetPostProcessSamples(const int postProcessingSamples);
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121 |
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122 | /** See set.
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123 | */
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124 | int GetVisualizationSamples() const;
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125 |
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126 | /** See set.
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127 | */
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128 | int GetConstructionSamples() const;
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129 |
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130 | /** See set.
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131 | */
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132 | int GetPostProcessSamples() const;
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133 |
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134 | /** Returns true if view cells wer already constructed.
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135 | */
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136 | virtual bool ViewCellsConstructed() const = 0;
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137 |
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138 | protected:
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139 | /** Adds sample constributions to the view cell PVS.
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140 | @returns number of sample contributions
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141 | */
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142 | virtual int AddSampleContributions(const Ray &ray,
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143 | Intersectable *sObject,
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144 | Intersectable *tObject) = 0;
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145 |
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146 | /** Initialises the render time simulator.
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147 | */
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148 | void InitRenderSimulator();
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149 | /////////////////////
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150 |
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151 |
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152 | /// the view cell corresponding to unbounded space
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153 | ViewCell *mUnbounded;
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154 |
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155 | /// Simulates rendering
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156 | RenderSimulator *mRenderSimulator;
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157 |
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158 | /// Loaded view cells
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159 | ViewCellContainer mViewCells;
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160 |
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161 | /// maximum number of samples taken for construction of the view cells
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162 | int mConstructionSamples;
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163 | int mPostProcessSamples;
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164 | int mVisualizationSamples;
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165 | };
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166 |
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167 | /**
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168 | Manages different higher order operations on the view cells.
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169 | */
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170 | class BspViewCellsManager: public ViewCellsManager
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171 | {
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172 |
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173 | public:
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174 |
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175 | BspViewCellsManager(BspTree *tree, int constructionSamples);
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176 |
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177 | int Construct(const ObjectContainer &objects,
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178 | const VssRayContainer &rays,
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179 | AxisAlignedBox3 *sceneBbox);
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180 |
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181 | int CastRay(const Ray &rays);
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182 |
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183 | int PostProcess(const ObjectContainer &objects,
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184 | const RayContainer &rays);
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185 |
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186 | void Visualize(const ObjectContainer &objects,
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187 | const RayContainer &sampleRays);
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188 |
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189 | int GetType() const;
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190 |
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191 | /** Generates view cell of type specified by this manager
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192 | */
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193 | ViewCell *GenerateViewCell(Mesh *mesh = NULL) const;
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194 |
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195 | bool ViewCellsConstructed() const;
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196 |
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197 | protected:
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198 |
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199 | int AddSampleContributions(const Ray &ray, Intersectable *sObject, Intersectable *tObject);
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200 |
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201 | /// the BSP tree.
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202 | BspTree *mBspTree;
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203 |
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204 |
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205 | private:
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206 |
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207 |
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208 | /** Exports visualization of the BSP splits.
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209 | */
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210 | void ExportSplits(const ObjectContainer &objects, const RayContainer &sampleRays);
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211 |
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212 | /** Exports visualization of the BSP PVS.
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213 | */
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214 | void ExportBspPvs(const ObjectContainer &objects, const RayContainer &sampleRays);
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215 |
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216 | };
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217 |
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218 | /**
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219 | Manages different higher order operations on the KD type view cells.
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220 | */
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221 | class KdViewCellsManager: public ViewCellsManager
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222 | {
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223 |
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224 | public:
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225 |
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226 | KdViewCellsManager(KdTree *tree);
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227 |
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228 | int Construct(const ObjectContainer &objects,
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229 | const VssRayContainer &rays,
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230 | AxisAlignedBox3 *sceneBbox);
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231 |
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232 | int CastRay(const Ray &ray);
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233 |
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234 | int PostProcess(const ObjectContainer &objects,
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235 | const RayContainer &rays);
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236 |
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237 | void Visualize(const ObjectContainer &objects,
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238 | const RayContainer &sampleRays);
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239 |
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240 | int GetType() const;
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241 |
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242 | bool ViewCellsConstructed() const;
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243 |
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244 |
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245 | protected:
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246 |
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247 | KdNode *GetNodeForPvs(KdLeaf *leaf);
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248 |
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249 | int AddSampleContributions(const Ray &ray, Intersectable *sObject, Intersectable *tObject);
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250 |
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251 | /// the BSP tree.
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252 | KdTree *mKdTree;
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253 |
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254 | /// depth of the KD tree nodes with represent the view cells
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255 | int mKdPvsDepth;
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256 | };
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257 |
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258 | /**
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259 | Manages different higher order operations on the view cells
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260 | for vsp kd tree view cells.
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261 | */
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262 | class VspKdViewCellsManager: public ViewCellsManager
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263 | {
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264 |
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265 | public:
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266 |
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267 | VspKdViewCellsManager(VspKdTree *vspKdTree, int constructionSamples);
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268 |
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269 | int Construct(const ObjectContainer &objects,
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270 | const VssRayContainer &rays,
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271 | AxisAlignedBox3 *sceneBbox);
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272 |
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273 | int CastRay(const Ray &rays);
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274 |
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275 | int PostProcess(const ObjectContainer &objects,
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276 | const RayContainer &rays);
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277 |
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278 | void Visualize(const ObjectContainer &objects,
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279 | const RayContainer &sampleRays);
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280 |
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281 | int GetType() const;
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282 |
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283 | bool ViewCellsConstructed() const;
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284 |
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285 |
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286 | protected:
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287 |
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288 | int AddSampleContributions(const Ray &ray, Intersectable *sObject, Intersectable *tObject);
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289 |
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290 | /// the BSP tree.
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291 | VspKdTree *mVspKdTree;
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292 | };
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293 |
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294 |
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295 | #endif
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