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 | #include "ViewCell.h"
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8 | #include "ViewCellBsp.h"
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9 |
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10 | class ViewCell;
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11 | class Intersectable;
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12 | class RenderSimulator;
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13 | class Renderer;
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14 | class Mesh;
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15 | struct Triangle3;
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16 | class SimulationStatistics;
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17 | class BspTree;
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18 | class KdTree;
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19 | class VspKdTree;
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20 | class VspBspTree;
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21 | class KdNode;
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22 | class KdLeaf;
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23 | class VspKdTree;
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24 | class AxisAlignedBox3;
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25 | class BspLeaf;
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26 | class ViewCellsStatistics;
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27 | class Exporter;
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28 | class Beam;
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29 | class Preprocessor;
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30 | class ViewCellsTree;
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31 | class MergeCandidate;
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32 |
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33 | struct BspRay;
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34 |
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35 |
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36 | /** Probably Visible Set */
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37 | class PrVs
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38 | {
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39 | public:
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40 | /// root of view cells tree
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41 | ViewCell *mViewCell;
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42 |
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43 | // input parameter is the render budget for the PrVS
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44 | float mRenderBudget;
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45 |
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46 | /// some characteristic values could be here
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47 |
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48 | };
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49 |
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50 | /**
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51 | Manages different higher order operations on the view cells.
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52 | */
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53 | class ViewCellsManager
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54 | {
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55 | public:
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56 | struct PvsStatistics
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57 | {
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58 | int minPvs;
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59 | int maxPvs;
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60 | float avgPvs;
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61 | int viewcells;
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62 | };
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63 |
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64 | /// view cell container types
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65 | enum {BSP, KD, VSP_KD, VSP_BSP};
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66 |
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67 | /// view cells evaluation type
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68 | enum {PER_OBJECT, PER_TRIANGLE};
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69 |
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70 | /** Constructor taking the initial and construction samples.
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71 | @param initialSamples the maximal number of samples used for creating the hierarchy
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72 | of view cells
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73 | @param constructionSamples the maximal number of samples used for construction
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74 | */
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75 | ViewCellsManager(const int initialSamples, const int constructionSamples);
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76 |
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77 | ViewCellsManager();
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78 |
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79 | virtual ~ViewCellsManager();
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80 |
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81 | /** Constructs view cells container taking a preprocessor
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82 | @returns the output rays (if not null)
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83 | */
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84 | int Construct(Preprocessor *preprocessor, VssRayContainer *outRays = NULL);
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85 |
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86 | /** Constructs view cell container with a given number of samples.
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87 | */
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88 | virtual int ConstructSubdivision(const ObjectContainer &objects,
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89 | const VssRayContainer &rays) = 0;
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90 |
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91 | /** Computes sample contributions of the rays to the view cells PVS.
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92 |
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93 | @param rays bundle of rays used to find intersections with view cells and
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94 | adding the contribution
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95 | @param addRays true if rays should be added to the PVSs of the viewcells they
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96 | intersect
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97 | @param storeViewCells true if view cells should be stored in the ray
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98 | */
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99 | float ComputeSampleContributions(const VssRayContainer &rays,
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100 | const bool addContributions,
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101 | const bool storeViewCells);
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102 |
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103 | /** Add sample contributions to the viewcells they intersect */
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104 | void AddSampleContributions(const VssRayContainer &rays);
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105 |
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106 |
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107 | /** Computes sample contribution of a simgle ray to the view cells PVS.
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108 | @param ray finds intersections with view cells and holds the contribution
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109 | @param castRay true if ray should be cast to gain the information, false if ray
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110 | is already holding the information and need not be recast.
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111 |
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112 | @returns number of sample contributions
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113 | */
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114 | virtual float ComputeSampleContributions(VssRay &ray,
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115 | const bool addRays,
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116 | const bool storeViewCells);
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117 |
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118 | virtual void AddSampleContributions(VssRay &ray);
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119 |
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120 | /** Prints out statistics of the view cells.
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121 | */
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122 | virtual void PrintStatistics(ostream &s) const;
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123 |
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124 | /** Post processes view cells givemŽa number of rays.
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125 | */
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126 | virtual int PostProcess(const ObjectContainer &objects,
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127 | const VssRayContainer &rays) = 0;
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128 |
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129 | /** Show visualization of the view cells.
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130 | */
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131 | virtual void Visualize(const ObjectContainer &objects,
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132 | const VssRayContainer &sampleRays) = 0;
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133 |
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134 | /** type of the view cell container.
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135 | */
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136 | virtual int GetType() const = 0;
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137 |
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138 | /** Load the input viewcells. The input viewcells should be given as a collection
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139 | of meshes. Each mesh is assume to form a bounded polyhedron defining the interior of
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140 | the viewcell. The method then builds a BSP tree of these view cells.
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141 |
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142 | @param filename file to load
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143 | @return true on success
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144 | */
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145 | virtual bool LoadViewCellsGeometry(const string filename);
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146 |
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147 |
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148 | /** Constructs view cell from base triangle. The ViewCell is extruded along the normal vector.
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149 | @param the base triangle
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150 | @param the height of the newly created view cell
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151 | */
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152 | ViewCell *ExtrudeViewCell(const Triangle3 &baseTri, const float height) const;
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153 |
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154 | /** Merges two view cells.
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155 | @note the piercing rays of the front and back will be ordered
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156 | @returns new view cell based on the merging.
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157 | */
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158 | ViewCellInterior *MergeViewCells(ViewCell *front, ViewCell *back) const;
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159 |
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160 | /** Merges a container of view cells.
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161 | @returns new view cell based on the merging.
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162 | */
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163 | ViewCellInterior *MergeViewCells(ViewCellContainer &children) const;
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164 |
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165 | /** Generates view cell of type specified by this manager
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166 | */
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167 | virtual ViewCell *GenerateViewCell(Mesh *mesh = NULL) const = 0;
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168 |
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169 | /** Adds a new view cell to the list of predefined view cells.
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170 | */
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171 | void AddViewCell(ViewCell *viewCell);
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172 |
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173 | /** Derive view cells from objects.
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174 | */
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175 | void DeriveViewCells(const ObjectContainer &objects,
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176 | ViewCellContainer &viewCells,
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177 | const int maxViewCells) const;
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178 |
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179 | /** Sets maximal number of samples used for the
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180 | construction of the view cells.
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181 | */
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182 | void SetVisualizationSamples(const int visSamples);
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183 |
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184 | /** Sets maximal number of samples used for the construction of the view cells.
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185 | */
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186 | void SetConstructionSamples(const int constructionSamples);
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187 |
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188 | /** Sets maximal number of samples used for the visualization of the view cells.
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189 | */
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190 | void SetInitialSamples(const int initialSamples);
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191 |
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192 | /** Sets maximal number of samples used for the post processing of the view cells.
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193 | */
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194 | void SetPostProcessSamples(const int postProcessingSamples);
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195 |
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196 | /** See set.
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197 | */
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198 | int GetVisualizationSamples() const;
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199 |
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200 | /** See set.
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201 | */
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202 | int GetConstructionSamples() const;
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203 |
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204 | /** See set.
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205 | */
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206 | int GetPostProcessSamples() const;
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207 |
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208 | /** Returns true if view cells wer already constructed.
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209 | */
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210 | virtual bool ViewCellsConstructed() const = 0;
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211 |
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212 | /** cast line segment to get a list of unique viewcells which are intersected
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213 | by this line segment
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214 | */
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215 |
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216 | virtual int CastLineSegment(const Vector3 &origin,
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217 | const Vector3 &termination,
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218 | ViewCellContainer &viewcells
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219 | ) = 0;
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220 |
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221 | virtual void GetPvsStatistics(PvsStatistics &stat);
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222 |
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223 | virtual void GetPrVS(const Vector3 &viewPoint, PrVs &prvs);
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224 |
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225 | /** Get a viewcell containing the specified point
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226 | */
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227 | virtual ViewCell *GetViewCell(const Vector3 &point) const = 0;
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228 |
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229 | virtual void PrintPvsStatistics(ostream &s);
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230 |
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231 | /** Updates pvs of the view cell hierarchy if necessary.
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232 | */
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233 | void UpdatePvs();
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234 |
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235 | /** Returns probability that view point lies in one view cell.
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236 | */
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237 | virtual float GetProbability(ViewCell *viewCell) = 0;
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238 |
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239 | /** Returns render cost of a single view cell given the render cost of an object.
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240 | */
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241 | float GetRendercost(ViewCell *viewCell) const;
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242 |
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243 | /** Returns reference to container of loaded / generated view cells.
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244 | */
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245 | ViewCellContainer &GetViewCells();
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246 |
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247 | /** Helper function used to split ray sets uniformly
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248 | into one that is currently used and the other that
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249 | is saved for later processing.
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250 | @param sourceRays the input ray set
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251 | @param maxSize the maximal number of rays that will be used
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252 | @param usedRays returns the used ray set
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253 | @param savedRays if not null, returns the saved ray set
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254 | */
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255 | void GetRaySets(const VssRayContainer &sourceRays,
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256 | const int maxSize,
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257 | VssRayContainer &usedRays,
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258 | VssRayContainer *savedRays = NULL) const;
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259 |
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260 | /** Returns accumulated area of all view cells.
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261 | */
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262 | float GetAccVcArea();
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263 |
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264 | /** Returns area of one view cell.
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265 | */
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266 | virtual float GetArea(ViewCell *viewCell) const;
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267 |
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268 | /** Returns volume of view cell.
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269 | */
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270 | virtual float GetVolume(ViewCell *viewCell) const;
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271 |
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272 | /** Sets the current renderer mainly for view cells statistics.
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273 | */
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274 | void SetRenderer(Renderer *renderer);
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275 |
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276 | /** Computes a (random) view point in the valid view space.
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277 | @returns true if valid view point was found
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278 | */
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279 | virtual bool GetViewPoint(Vector3 &viewPoint) const;
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280 |
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281 | /** Returns true if this view point is in the valid view space.
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282 | */
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283 | virtual bool ViewPointValid(const Vector3 &viewPoint) const;
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284 |
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285 | /** Sets a view space boundary.
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286 | */
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287 | void SetViewSpaceBox(const AxisAlignedBox3 &box);
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288 |
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289 | AxisAlignedBox3 GetViewSpaceBox() const;
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290 |
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291 | /** Creates mesh for this view cell.
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292 | */
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293 | virtual void CreateMesh(ViewCell *vc) = NULL;
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294 |
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295 | /** Writes view cells to disc.
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296 | */
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297 | virtual bool ExportViewCells(const string filename);
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298 |
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299 | /** Casts beam to collect view cells.
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300 | */
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301 | virtual int CastBeam(Beam &beam);
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302 |
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303 | /** Checks if view cell is considered as valid.
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304 | */
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305 | virtual bool CheckValidity(ViewCell *vc,
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306 | int minPvsSize,
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307 | int maxPvsSize) const;
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308 |
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309 |
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310 | /** Sets validity of view cell
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311 | */
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312 | virtual void SetValidity(ViewCell *vc,
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313 | int minPvsSize,
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314 | int maxPvsSize) const;
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315 |
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316 | /** sets validy of all viewcells
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317 | */
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318 | virtual void SetValidity(int minPvsSize,
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319 | int maxPvsSize) const;
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320 |
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321 |
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322 | /** set valid viewcells in the range of pvs. sorts the viewcells
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323 | according to the pvs and then pickups those in the ranges
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324 | */
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325 | void SetValidityPercentage(const float minValid, const float maxValid);
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326 |
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327 | int CountValidViewcells() const;
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328 |
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329 | /** Returns maximal allowed pvs size.
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330 | */
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331 | int GetMaxPvsSize() const;
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332 |
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333 | /** Returns maximal allowed pvs size.
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334 | */
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335 | int GetMinPvsSize() const;
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336 |
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337 | /** Returns maximal ratio. i.e., currentPVs / maxPvs,
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338 | where pvs is still considered valid.
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339 | */
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340 | float GetMaxPvsRatio() const;
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341 |
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342 | /** Exports view cell geometry.
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343 | */
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344 | virtual void ExportViewCellGeometry(Exporter *exporter,
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345 | ViewCell *vc,
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346 | const Plane3 *clipPlane = NULL) const = 0;
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347 |
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348 | virtual void FinalizeViewCells(const bool createMesh);
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349 |
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350 |
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351 | /** Loads view cells from file. The view cells manager is created with
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352 | respect to the loaded view cells.
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353 |
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354 | @returns the view cells manager if loading was successful, false otherwise
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355 | */
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356 | static ViewCellsManager *LoadViewCells(const string filename,
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357 | ObjectContainer *objects);
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358 |
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359 | /** Evaluates statistics values on view cells.
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360 | */
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361 | void EvaluateRenderStatistics(float &totalRenderCost,
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362 | float &expectedRenderCost,
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363 | float &deviation,
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364 | float &variance,
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365 | int &totalPvs,
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366 | float &avgRenderCost);
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367 |
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368 |
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369 | /** Returns hierarchy of the view cells.
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370 | */
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371 | ViewCellsTree *GetViewCellsTree();
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372 |
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373 | virtual void CollectMergeCandidates(const VssRayContainer &rays,
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374 | vector<MergeCandidate> &candidates) = 0;
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375 |
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376 | void CollectViewCells(const int n);
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377 |
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378 | /** Returns true if this (logical) view cell is equal to a spatial node.
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379 | */
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380 | virtual bool EqualToSpatialNode(ViewCell *viewCell) const;
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381 |
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382 | /** Sets current view cells set to active, i.e., the sampling is done in this view cell set.
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383 | */
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384 | void SetViewCellsActive();
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385 |
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386 | /** Evaluates worth of current view cell hierarchy.
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387 | */
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388 | void EvalViewCellPartition(Preprocessor *preprocessor);
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389 |
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390 | /** Sets maximal size of a view cell filter.
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391 | */
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392 | void SetMaxFilterSize(const int size);
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393 |
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394 | int GetMaxFilterSize() {
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395 | return mMaxFilterSize;
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396 | }
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397 |
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398 | /** deletes interior nodes from the tree which have negative merge cost set (local merge) */
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399 | void
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400 | DeleteLocalMergeTree(ViewCell *vc
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401 | ) const;
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402 |
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403 | /** Evaluautes histogram for a given number of view cells.
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404 | */
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405 | void EvalViewCellHistogram(const string filename, const int nViewCells);
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406 |
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407 | /** Evaluautes histogram for a given number of view cells.
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408 | */
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409 | void EvalViewCellHistogramForPvsSize(const string filename, const int nViewCells);
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410 |
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411 | /** Evaluates the render cost of a view cell.
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412 | */
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413 | float EvalRenderCost(Intersectable *obj) const;
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414 |
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415 | protected:
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416 |
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417 | /** Returns the bounding box of filter width.
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418 | */
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419 | AxisAlignedBox3 GetFilterBBox(const Vector3 &viewPoint, const float width) const;
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420 |
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421 | /** Intersects box with the tree and returns the number of intersected boxes.
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422 | @returns number of view cells found
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423 | */
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424 | virtual int ComputeBoxIntersections(const AxisAlignedBox3 &box,
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425 | ViewCellContainer &viewCells) const;
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426 |
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427 | virtual void TestFilter(const ObjectContainer &objects) {};
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428 |
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429 | /**
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430 | if the view cells tree was already constructed or not.
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431 | */
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432 | bool ViewCellsTreeConstructed() const;
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433 |
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434 | int CastPassSamples(const int samplesPerPass,
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435 | const int sampleType,
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436 | VssRayContainer &vssRays) const;
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437 |
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438 | void ParseEnvironment();
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439 |
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440 | /** Creates unique view cell ids.
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441 | */
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442 | void CreateUniqueViewCellIds();
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443 |
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444 | /** Finalizes, i.e., creates mesh, volume, area etc. for the view cell.
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445 | */
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446 | virtual void Finalize(ViewCell *viewCell, const bool createMesh);
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447 |
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448 | /** Recollects view cells and resets statistics.
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449 | */
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450 | void ResetViewCells();
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451 |
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452 | /** Collects the view cells in the view cell container.
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453 | */
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454 | virtual void CollectViewCells() = 0;
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455 |
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456 | /** Evaluates view cells statistics and stores it in
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457 | mViewCellsStatistics.
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458 | */
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459 | void EvaluateViewCellsStats();
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460 |
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461 | //-- helper functions for view cell visualization
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462 |
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463 | /** Exports the view cell partition.
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464 | */
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465 | void ExportViewCellsForViz(Exporter *exporter) const;
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466 |
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467 | /** Sets exporter color.
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468 | */
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469 | virtual void ExportColor(Exporter *exporter, ViewCell *vc) const = 0;
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470 |
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471 |
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472 | virtual float GetViewSpaceVolume();
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473 |
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474 | /** Creates meshes from the view cells.
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475 | */
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476 | void CreateViewCellMeshes();
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477 |
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478 | /** Takes different measures to prepares the view cells after loading them from disc.
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479 | */
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480 | virtual void PrepareLoadedViewCells() {};
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481 |
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482 | /** Constructs local view cell merge hierarchy.
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483 | */
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484 | ViewCell *ConstructLocalMergeTree(ViewCell *currentViewCell,
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485 | const ViewCellContainer &viewCells);
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486 |
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487 | /** Constructs local view cell merge hierarchy based solely on similarity with the
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488 | current viewcell
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489 | */
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490 | ViewCell *ConstructLocalMergeTree2(ViewCell *currentViewCell,
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491 | const ViewCellContainer &viewCells);
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492 |
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493 |
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494 | /** Creates clip plane for visualization.
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495 | */
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496 | void CreateClipPlane();
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497 |
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498 | virtual void UpdatePvsForEvaluation(ViewCell *root, ObjectPvs &pvs) = 0;
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499 |
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500 |
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501 | int mPvsExportMode;
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502 |
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503 | Plane3 mClipPlane;
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504 |
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505 | bool mUseClipPlaneForViz;
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506 |
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507 |
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508 | /// Renders the view cells.
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509 | Renderer *mRenderer;
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510 |
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511 | /// Loaded view cells
|
---|
512 | ViewCellContainer mViewCells;
|
---|
513 |
|
---|
514 | ViewCellsTree *mViewCellsTree;
|
---|
515 |
|
---|
516 | bool mPruneEmptyViewCells;
|
---|
517 |
|
---|
518 | bool mViewCellPvsIsUpdated;
|
---|
519 | /// maximum number of samples taken for construction of the view cells
|
---|
520 | int mConstructionSamples;
|
---|
521 | int mSamplesPerPass;
|
---|
522 | int mInitialSamples;
|
---|
523 | int mPostProcessSamples;
|
---|
524 | int mVisualizationSamples;
|
---|
525 |
|
---|
526 | float mTotalAreaValid;
|
---|
527 | float mTotalArea;
|
---|
528 |
|
---|
529 | int mMaxPvsSize;
|
---|
530 | int mMinPvsSize;
|
---|
531 | float mMaxPvsRatio;
|
---|
532 |
|
---|
533 | int mSamplingType;
|
---|
534 | int mEvaluationSamplingType;
|
---|
535 | int mNumActiveViewCells;
|
---|
536 | bool mCompressViewCells;
|
---|
537 |
|
---|
538 | ViewCellsStatistics mCurrentViewCellsStats;
|
---|
539 | /// the scene bounding box
|
---|
540 | AxisAlignedBox3 mViewSpaceBox;
|
---|
541 | /// holds the view cell meshes
|
---|
542 | MeshContainer mMeshContainer;
|
---|
543 | /// if view cells should be exported
|
---|
544 | bool mExportViewCells;
|
---|
545 |
|
---|
546 | //bool mMarchTree);
|
---|
547 | bool mOnlyValidViewCells;
|
---|
548 |
|
---|
549 | /// if rays should be used to collect merge candidates
|
---|
550 | bool mUseRaysForMerge;
|
---|
551 | /// merge the view cells?
|
---|
552 | bool mMergeViewCells;
|
---|
553 |
|
---|
554 | /// the width of the box filter
|
---|
555 | float mFilterWidth;
|
---|
556 | int mMaxFilterSize;
|
---|
557 |
|
---|
558 | //-- visualization options
|
---|
559 |
|
---|
560 | /// color code for view cells
|
---|
561 | int mColorCode;
|
---|
562 | bool mExportGeometry;
|
---|
563 | bool mExportRays;
|
---|
564 |
|
---|
565 | bool mViewCellsFinished;
|
---|
566 |
|
---|
567 | bool mEvaluateViewCells;
|
---|
568 |
|
---|
569 | bool mShowVisualization;
|
---|
570 |
|
---|
571 | // HACK in order to detect empty view cells
|
---|
572 | void CollectEmptyViewCells();
|
---|
573 | void TestEmptyViewCells(const ObjectContainer &obj);
|
---|
574 |
|
---|
575 | ViewCellContainer mEmptyViewCells;
|
---|
576 |
|
---|
577 | int mRenderCostEvaluationType;
|
---|
578 | };
|
---|
579 |
|
---|
580 |
|
---|
581 |
|
---|
582 | /**
|
---|
583 | Manages different higher order operations on the view cells.
|
---|
584 | */
|
---|
585 | class BspViewCellsManager: public ViewCellsManager
|
---|
586 | {
|
---|
587 |
|
---|
588 | public:
|
---|
589 | /** Constructor taking the bsp tree and the number of samples
|
---|
590 | used to construct the bsp tree.
|
---|
591 | */
|
---|
592 | BspViewCellsManager(BspTree *tree);
|
---|
593 |
|
---|
594 | ~BspViewCellsManager();
|
---|
595 |
|
---|
596 | int ConstructSubdivision(const ObjectContainer &objects,
|
---|
597 | const VssRayContainer &rays);
|
---|
598 |
|
---|
599 | int PostProcess(const ObjectContainer &objects,
|
---|
600 | const VssRayContainer &rays);
|
---|
601 |
|
---|
602 | void Visualize(const ObjectContainer &objects,
|
---|
603 | const VssRayContainer &sampleRays);
|
---|
604 |
|
---|
605 | int GetType() const;
|
---|
606 |
|
---|
607 | ViewCell *GenerateViewCell(Mesh *mesh = NULL) const;
|
---|
608 |
|
---|
609 | bool ViewCellsConstructed() const;
|
---|
610 |
|
---|
611 | //void PrintStatistics(ostream &s) const;
|
---|
612 |
|
---|
613 | int CastLineSegment(const Vector3 &origin,
|
---|
614 | const Vector3 &termination,
|
---|
615 | ViewCellContainer &viewcells);
|
---|
616 |
|
---|
617 | float GetProbability(ViewCell *viewCell);
|
---|
618 |
|
---|
619 |
|
---|
620 | /** Get a viewcell containing the specified point */
|
---|
621 | ViewCell *GetViewCell(const Vector3 &point) const;
|
---|
622 |
|
---|
623 | void CreateMesh(ViewCell *vc);
|
---|
624 |
|
---|
625 | void ExportViewCellGeometry(Exporter *exporter,
|
---|
626 | ViewCell *vc,
|
---|
627 | const Plane3 *clipPlane = NULL) const;
|
---|
628 |
|
---|
629 | void CollectMergeCandidates(const VssRayContainer &rays,
|
---|
630 | vector<MergeCandidate> &candidates);
|
---|
631 |
|
---|
632 | void Finalize(ViewCell *viewCell, const bool createMesh);
|
---|
633 |
|
---|
634 | bool ExportViewCells(const string filename);
|
---|
635 |
|
---|
636 | /** Constructs merge hierarchy which corresponds to the spatial hierarchy.
|
---|
637 | */
|
---|
638 | ViewCell *ConstructSpatialMergeTree(BspNode *root);
|
---|
639 |
|
---|
640 | /** Updates the pvs in the view cells tree.
|
---|
641 | */
|
---|
642 | void UpdatePvsForEvaluation(ViewCell *root, ObjectPvs &pvs);
|
---|
643 |
|
---|
644 | protected:
|
---|
645 |
|
---|
646 |
|
---|
647 | /** HACK
|
---|
648 | */
|
---|
649 | void AddCurrentViewCellsToHierarchy();
|
---|
650 |
|
---|
651 | void CollectViewCells();
|
---|
652 |
|
---|
653 | void ExportColor(Exporter *exporter, ViewCell *vc) const;
|
---|
654 |
|
---|
655 |
|
---|
656 |
|
---|
657 | /// the BSP tree.
|
---|
658 | BspTree *mBspTree;
|
---|
659 |
|
---|
660 | vector<BspRay *> mBspRays;
|
---|
661 |
|
---|
662 | private:
|
---|
663 |
|
---|
664 | /** Exports visualization of the BSP splits.
|
---|
665 | */
|
---|
666 | void ExportSplits(const ObjectContainer &objects);
|
---|
667 |
|
---|
668 | /** Exports visualization of the BSP PVS.
|
---|
669 | */
|
---|
670 | void ExportBspPvs(const ObjectContainer &objects);
|
---|
671 |
|
---|
672 | void TestSubdivision();
|
---|
673 | };
|
---|
674 |
|
---|
675 | /**
|
---|
676 | Manages different higher order operations on the KD type view cells.
|
---|
677 | */
|
---|
678 | class KdViewCellsManager: public ViewCellsManager
|
---|
679 | {
|
---|
680 |
|
---|
681 | public:
|
---|
682 |
|
---|
683 | KdViewCellsManager(KdTree *tree);
|
---|
684 |
|
---|
685 | int ConstructSubdivision(const ObjectContainer &objects,
|
---|
686 | const VssRayContainer &rays);
|
---|
687 |
|
---|
688 | int CastLineSegment(const Vector3 &origin,
|
---|
689 | const Vector3 &termination,
|
---|
690 | ViewCellContainer &viewcells);
|
---|
691 |
|
---|
692 | int PostProcess(const ObjectContainer &objects,
|
---|
693 | const VssRayContainer &rays);
|
---|
694 |
|
---|
695 | void Visualize(const ObjectContainer &objects,
|
---|
696 | const VssRayContainer &sampleRays);
|
---|
697 |
|
---|
698 | int GetType() const;
|
---|
699 |
|
---|
700 | bool ViewCellsConstructed() const;
|
---|
701 |
|
---|
702 | ViewCell *GenerateViewCell(Mesh *mesh) const;
|
---|
703 |
|
---|
704 | /** Prints out statistics of this approach.
|
---|
705 | */
|
---|
706 | // virtual void PrintStatistics(ostream &s) const;
|
---|
707 | ViewCell *GetViewCell(const Vector3 &point) const { return NULL; }
|
---|
708 |
|
---|
709 | float GetProbability(ViewCell *viewCell);
|
---|
710 |
|
---|
711 |
|
---|
712 | void CreateMesh(ViewCell *vc);
|
---|
713 |
|
---|
714 | void ExportViewCellGeometry(Exporter *exporter,
|
---|
715 | ViewCell *vc,
|
---|
716 | const Plane3 *clipPlane = NULL) const;
|
---|
717 |
|
---|
718 | void CollectMergeCandidates(const VssRayContainer &rays,
|
---|
719 | vector<MergeCandidate> &candidates);
|
---|
720 |
|
---|
721 |
|
---|
722 | protected:
|
---|
723 |
|
---|
724 | virtual void UpdatePvsForEvaluation(ViewCell *root, ObjectPvs &pvs) {};
|
---|
725 | /** Collects view cells from a hierarchy.
|
---|
726 | */
|
---|
727 | void CollectViewCells();
|
---|
728 |
|
---|
729 | KdNode *GetNodeForPvs(KdLeaf *leaf);
|
---|
730 |
|
---|
731 | void ExportColor(Exporter *exporter, ViewCell *vc) const;
|
---|
732 |
|
---|
733 |
|
---|
734 | /// the BSP tree.
|
---|
735 | KdTree *mKdTree;
|
---|
736 |
|
---|
737 | /// depth of the KD tree nodes with represent the view cells
|
---|
738 | int mKdPvsDepth;
|
---|
739 | };
|
---|
740 |
|
---|
741 | /**
|
---|
742 | Manages different higher order operations on the view cells
|
---|
743 | for vsp kd tree view cells.
|
---|
744 | */
|
---|
745 | class VspKdViewCellsManager: public ViewCellsManager
|
---|
746 | {
|
---|
747 |
|
---|
748 | public:
|
---|
749 |
|
---|
750 | VspKdViewCellsManager(VspKdTree *vspKdTree);
|
---|
751 |
|
---|
752 | int ConstructSubdivision(const ObjectContainer &objects,
|
---|
753 | const VssRayContainer &rays);
|
---|
754 |
|
---|
755 |
|
---|
756 | int PostProcess(const ObjectContainer &objects,
|
---|
757 | const VssRayContainer &rays);
|
---|
758 |
|
---|
759 | void Visualize(const ObjectContainer &objects,
|
---|
760 | const VssRayContainer &sampleRays);
|
---|
761 |
|
---|
762 | int GetType() const;
|
---|
763 |
|
---|
764 | bool ViewCellsConstructed() const;
|
---|
765 |
|
---|
766 | //virtual void PrintStatistics(ostream &s) const;
|
---|
767 |
|
---|
768 | ViewCell *GenerateViewCell(Mesh *mesh) const;
|
---|
769 |
|
---|
770 |
|
---|
771 | int CastLineSegment(const Vector3 &origin,
|
---|
772 | const Vector3 &termination,
|
---|
773 | ViewCellContainer &viewcells);
|
---|
774 |
|
---|
775 | ViewCell *GetViewCell(const Vector3 &point) const { return NULL; }
|
---|
776 |
|
---|
777 | float GetProbability(ViewCell *viewCell);
|
---|
778 |
|
---|
779 |
|
---|
780 | void CreateMesh(ViewCell *vc);
|
---|
781 |
|
---|
782 | void ExportViewCellGeometry(Exporter *exporter,
|
---|
783 | ViewCell *vc,
|
---|
784 | const Plane3 *clipPlane = NULL) const;
|
---|
785 |
|
---|
786 | void CollectMergeCandidates(const VssRayContainer &rays, vector<MergeCandidate> &candidates);
|
---|
787 |
|
---|
788 | virtual void UpdatePvsForEvaluation(ViewCell *root, ObjectPvs &pvs) {};
|
---|
789 | protected:
|
---|
790 |
|
---|
791 | void ExportLeaves(const ObjectContainer &objects,
|
---|
792 | const VssRayContainer &sampleRays);
|
---|
793 |
|
---|
794 | void CollectViewCells();
|
---|
795 |
|
---|
796 | void ExportColor(Exporter *exporter, ViewCell *vc) const;
|
---|
797 |
|
---|
798 |
|
---|
799 |
|
---|
800 | /// the BSP tree.
|
---|
801 | VspKdTree *mVspKdTree;
|
---|
802 | };
|
---|
803 |
|
---|
804 |
|
---|
805 |
|
---|
806 | /**
|
---|
807 | Manages different higher order operations on the view cells.
|
---|
808 | */
|
---|
809 | class VspBspViewCellsManager: public ViewCellsManager
|
---|
810 | {
|
---|
811 |
|
---|
812 | public:
|
---|
813 |
|
---|
814 | VspBspViewCellsManager(VspBspTree *tree);
|
---|
815 | ~VspBspViewCellsManager();
|
---|
816 |
|
---|
817 | int ConstructSubdivision(const ObjectContainer &objects,
|
---|
818 | const VssRayContainer &rays);
|
---|
819 |
|
---|
820 | int PostProcess(const ObjectContainer &objects,
|
---|
821 | const VssRayContainer &rays);
|
---|
822 |
|
---|
823 | void Visualize(const ObjectContainer &objects,
|
---|
824 | const VssRayContainer &sampleRays);
|
---|
825 |
|
---|
826 | int GetType() const;
|
---|
827 |
|
---|
828 | ViewCell *GenerateViewCell(Mesh *mesh = NULL) const;
|
---|
829 |
|
---|
830 | bool ViewCellsConstructed() const;
|
---|
831 |
|
---|
832 |
|
---|
833 | int CastLineSegment(const Vector3 &origin,
|
---|
834 | const Vector3 &termination,
|
---|
835 | ViewCellContainer &viewcells);
|
---|
836 |
|
---|
837 | float GetProbability(ViewCell *viewCell);
|
---|
838 |
|
---|
839 | ViewCell *GetViewCell(const Vector3 &point) const;
|
---|
840 |
|
---|
841 | bool GetViewPoint(Vector3 &viewPoint) const;
|
---|
842 |
|
---|
843 | bool ViewPointValid(const Vector3 &viewPoint) const;
|
---|
844 |
|
---|
845 | void CreateMesh(ViewCell *vc);
|
---|
846 |
|
---|
847 | bool ExportViewCells(const string filename);
|
---|
848 |
|
---|
849 | int CastBeam(Beam &beam);
|
---|
850 |
|
---|
851 | void ExportViewCellGeometry(Exporter *exporter,
|
---|
852 | ViewCell *vc,
|
---|
853 | const Plane3 *clipPlane = NULL) const;
|
---|
854 |
|
---|
855 | //float GetVolume(ViewCell *viewCell) const;
|
---|
856 |
|
---|
857 | void Finalize(ViewCell *viewCell, const bool createMesh);
|
---|
858 |
|
---|
859 | void CollectMergeCandidates(const VssRayContainer &rays, vector<MergeCandidate> &candidates);
|
---|
860 |
|
---|
861 | /** Returns true if this view cell is equivavalent to a spatial node.
|
---|
862 | */
|
---|
863 | bool EqualToSpatialNode(ViewCell *viewCell) const;
|
---|
864 |
|
---|
865 |
|
---|
866 | protected:
|
---|
867 |
|
---|
868 | int ComputeBoxIntersections(const AxisAlignedBox3 &box, ViewCellContainer &viewCells) const;
|
---|
869 |
|
---|
870 | /** Returns node of the spatial hierarchy corresponding to the view cell
|
---|
871 | if such a node exists.
|
---|
872 | */
|
---|
873 | BspNode *GetSpatialNode(ViewCell *viewCell) const;
|
---|
874 |
|
---|
875 | /** HACK
|
---|
876 | */
|
---|
877 | void AddCurrentViewCellsToHierarchy();
|
---|
878 |
|
---|
879 | /** Merges the view cells.
|
---|
880 | */
|
---|
881 | void MergeViewCells(const VssRayContainer &rays,
|
---|
882 | const ObjectContainer &objects);
|
---|
883 |
|
---|
884 | void RefineViewCells(const VssRayContainer &rays, const ObjectContainer &objects);
|
---|
885 |
|
---|
886 | void CollectViewCells();
|
---|
887 |
|
---|
888 | /** Returns maximal depth difference of view cell
|
---|
889 | leaves in tree.
|
---|
890 | */
|
---|
891 | int GetMaxTreeDiff(ViewCell *vc) const;
|
---|
892 |
|
---|
893 |
|
---|
894 | void ExportColor(Exporter *exporter, ViewCell *vc) const;
|
---|
895 |
|
---|
896 | /** Prepare view cells for use after loading them from disc.
|
---|
897 | */
|
---|
898 | void PrepareLoadedViewCells();
|
---|
899 |
|
---|
900 | /** Constructs merge hierarchy which corresponds to the spatial hierarchy.
|
---|
901 | */
|
---|
902 | ViewCell *ConstructSpatialMergeTree(BspNode *root);
|
---|
903 |
|
---|
904 | void UpdatePvsForEvaluation(ViewCell *root, ObjectPvs &pvs);
|
---|
905 |
|
---|
906 |
|
---|
907 | // HACK
|
---|
908 | void TestFilter(const ObjectContainer &objects);
|
---|
909 |
|
---|
910 |
|
---|
911 |
|
---|
912 | /// the view space partition BSP tree.
|
---|
913 | VspBspTree *mVspBspTree;
|
---|
914 |
|
---|
915 |
|
---|
916 | private:
|
---|
917 |
|
---|
918 | /** Exports visualization of the BSP splits.
|
---|
919 | */
|
---|
920 | void ExportSplits(const ObjectContainer &objects,
|
---|
921 | const VssRayContainer &rays);
|
---|
922 |
|
---|
923 | /** Exports visualization of the BSP PVS.
|
---|
924 | */
|
---|
925 | void ExportBspPvs(const ObjectContainer &objects,
|
---|
926 | const VssRayContainer &rays);
|
---|
927 |
|
---|
928 | void TestSubdivision();
|
---|
929 | };
|
---|
930 |
|
---|
931 |
|
---|
932 | class ViewCellsManagerFactory
|
---|
933 | {
|
---|
934 |
|
---|
935 | public:
|
---|
936 |
|
---|
937 | ViewCellsManager *Create(const string mName);
|
---|
938 |
|
---|
939 | };
|
---|
940 |
|
---|
941 | #endif
|
---|