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 | namespace GtpVisibilityPreprocessor {
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11 |
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12 | class ViewCell;
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13 | class Intersectable;
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14 | class RenderSimulator;
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15 | class Renderer;
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16 | class Mesh;
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17 | struct Triangle3;
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18 | class SimulationStatistics;
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19 | class BspTree;
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20 | class KdTree;
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21 | class VspOspTree;
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22 | class VspBspTree;
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23 | class KdNode;
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24 | class KdLeaf;
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25 | class AxisAlignedBox3;
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26 | class BspLeaf;
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27 | class ViewCellsStatistics;
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28 | class Exporter;
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29 | class Beam;
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30 | class Preprocessor;
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31 | class ViewCellsTree;
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32 | class MergeCandidate;
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33 | class BoundingBoxConverter;
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34 | class VspTree;
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35 | class OspTree;
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36 | class VspNode;
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37 | class HierarchyManager;
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38 | class BvHierarchy;
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39 | class ViewCellsTree;
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40 |
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41 | struct AxisAlignedPlane;
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42 | struct BspRay;
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43 |
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44 |
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45 | /** Probably Visible Set
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46 | */
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47 | class PrVs
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48 | {
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49 | public:
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50 | /// root of view cells tree
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51 | ViewCell *mViewCell;
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52 |
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53 | // input parameter is the render budget for the PrVs
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54 | float mRenderBudget;
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55 |
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56 | /// some characteristic values could be here
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57 |
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58 | };
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59 |
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60 |
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61 | /** Manages different higher order operations on the view cells.
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62 | */
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63 | class ViewCellsManager
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64 | {
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65 | public:
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66 | struct PvsStatistics
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67 | {
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68 | int minPvs;
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69 | int maxPvs;
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70 | float avgPvs;
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71 | int viewcells;
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72 | };
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73 |
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74 | /// view cell container types
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75 | enum {BSP, KD, VSP_KD, VSP_BSP, VSP_OSP};
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76 |
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77 | /// render cost evaluation type
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78 | enum {PER_OBJECT, PER_TRIANGLE};
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79 |
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80 | /** Default constructor.
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81 | */
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82 | ViewCellsManager(ViewCellsTree *viewCellsTree);
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83 |
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84 | virtual ~ViewCellsManager();
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85 |
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86 | /** Constructs view cells container taking a preprocessor
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87 | @returns the output rays (if not null)
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88 | */
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89 | int Construct(Preprocessor *preprocessor, VssRayContainer *outRays = NULL);
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90 |
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91 | /** Constructs view cell container with a given number of samples.
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92 | */
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93 | virtual int ConstructSubdivision(
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94 | const ObjectContainer &objects,
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95 | const VssRayContainer &rays) = 0;
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96 |
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97 | /** Computes sample contributions of the rays to the view cells PVS.
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98 |
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99 | @param rays bundle of rays used to find intersections with view cells and
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100 | adding the contribution
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101 | @param addRays true if rays should be added to the PVSs of the viewcells they
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102 | intersect
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103 | @param storeViewCells true if view cells should be stored in the ray
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104 | */
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105 | float ComputeSampleContributions(const VssRayContainer &rays,
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106 | const bool addContributions,
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107 | const bool storeViewCells);
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108 |
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109 | /** Add sample contributions to the viewcells they intersect
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110 | */
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111 | void AddSampleContributions(const VssRayContainer &rays);
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112 |
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113 |
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114 | /** Computes sample contribution of a simgle ray to the view cells PVS.
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115 | @param ray finds intersections with view cells and holds the contribution
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116 | @param castRay true if ray should be cast to gain the information, false if ray
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117 | is already holding the information and need not be recast.
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118 |
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119 | @returns number of sample contributions
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120 | */
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121 | virtual float ComputeSampleContribution(VssRay &ray,
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122 | const bool addRays,
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123 | const bool storeViewCells);
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124 |
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125 | virtual void AddSampleContributions(VssRay &ray);
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126 |
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127 | /** Prints out statistics of the view cells.
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128 | */
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129 | virtual void PrintStatistics(ostream &s) const;
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130 |
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131 | /** Post processes view cells givemŽa number of rays.
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132 | */
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133 | virtual int PostProcess(const ObjectContainer &objects,
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134 | const VssRayContainer &rays) = 0;
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135 |
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136 | /** Show visualization of the view cells.
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137 | */
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138 | virtual void Visualize(const ObjectContainer &objects,
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139 | const VssRayContainer &sampleRays) = 0;
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140 |
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141 | /** type of the view cell container.
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142 | */
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143 | virtual int GetType() const = 0;
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144 |
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145 | /** Load the input viewcells. The input viewcells should be given as a collection
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146 | of meshes. Each mesh is assume to form a bounded polyhedron defining the interior of
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147 | the viewcell. The method then builds a BSP tree of these view cells.
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148 |
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149 | @param filename file to load
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150 | @return true on success
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151 | */
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152 | virtual bool LoadViewCellsGeometry(const string filename);
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153 |
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154 |
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155 | /** Constructs view cell from base triangle. The ViewCell is extruded along the normal vector.
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156 | @param the base triangle
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157 | @param the height of the newly created view cell
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158 | */
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159 | ViewCell *ExtrudeViewCell(const Triangle3 &baseTri, const float height) const;
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160 |
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161 | /** Merges two view cells.
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162 | @note the piercing rays of the front and back will be ordered
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163 | @returns new view cell based on the merging.
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164 | */
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165 | ViewCellInterior *MergeViewCells(ViewCell *front, ViewCell *back) const;
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166 |
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167 | /** Merges a container of view cells.
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168 | @returns new view cell based on the merging.
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169 | */
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170 | ViewCellInterior *MergeViewCells(ViewCellContainer &children) const;
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171 |
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172 | /** Generates view cell of type specified by this manager
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173 | */
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174 | virtual ViewCell *GenerateViewCell(Mesh *mesh = NULL) const = 0;
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175 |
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176 | /** Adds a new view cell to the list of predefined view cells.
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177 | */
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178 | void AddViewCell(ViewCell *viewCell);
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179 |
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180 | /** Derive view cells from scene objects. The view ells are created by taking the object
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181 | geometry into account.
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182 | */
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183 | void DeriveViewCellsFromObjects(const ObjectContainer &objects,
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184 | ViewCellContainer &viewCells,
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185 | const int maxViewCells) const;
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186 |
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187 | /** Sets maximal number of samples used for the
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188 | construction of the view cells.
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189 | */
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190 | void SetVisualizationSamples(const int visSamples);
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191 |
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192 | /** Sets maximal number of samples used for the construction of the view cells.
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193 | */
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194 | void SetConstructionSamples(const int constructionSamples);
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195 |
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196 | /** Sets maximal number of samples used for the visualization of the view cells.
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197 | */
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198 | void SetInitialSamples(const int initialSamples);
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199 |
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200 | /** Sets maximal number of samples used for the post processing of the view cells.
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201 | */
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202 | void SetPostProcessSamples(const int postProcessingSamples);
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203 |
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204 | /** See set.
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205 | */
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206 | int GetVisualizationSamples() const;
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207 |
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208 | /** See set.
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209 | */
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210 | int GetConstructionSamples() const;
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211 |
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212 | /** See set.
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213 | */
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214 | int GetPostProcessSamples() const;
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215 |
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216 | /** Returns true if view cells are already constructed.
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217 | */
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218 | virtual bool ViewCellsConstructed() const = 0;
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219 |
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220 | /** cast line segment to get a list of unique viewcells which are intersected
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221 | by this line segment
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222 | */
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223 |
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224 | virtual int CastLineSegment(const Vector3 &origin,
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225 | const Vector3 &termination,
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226 | ViewCellContainer &viewcells
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227 | ) = 0;
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228 |
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229 | virtual void GetPvsStatistics(PvsStatistics &stat);
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230 |
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231 | virtual void GetPrVS(const Vector3 &viewPoint, PrVs &prvs, const float filterWidth);
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232 |
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233 | /** Get a viewcell containing the specified point
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234 | @param active if the active or elementary view cell should be returned.
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235 | */
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236 | virtual ViewCell *GetViewCell(const Vector3 &point, const bool active = false) const = 0;
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237 |
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238 | virtual void PrintPvsStatistics(ostream &s);
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239 |
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240 | /** Updates pvs of the view cell hierarchy if necessary.
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241 | */
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242 | void UpdatePvs();
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243 |
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244 | /** Returns probability that view point lies in one view cell.
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245 | */
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246 | virtual float GetProbability(ViewCell *viewCell) = 0;
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247 |
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248 | /** Returns render cost of a single view cell given the render cost of an object.
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249 | */
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250 | float GetRendercost(ViewCell *viewCell) const;
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251 |
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252 | /** Returns reference to container of loaded / generated view cells.
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253 | */
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254 | ViewCellContainer &GetViewCells();
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255 |
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256 | /** Helper function used to split ray sets uniformly
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257 | into one that is currently used and the other that
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258 | is saved for later processing.
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259 | @param sourceRays the input ray set
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260 | @param maxSize the maximal number of rays that will be used
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261 | @param usedRays returns the used ray set
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262 | @param savedRays if not null, returns the saved ray set
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263 | */
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264 | void GetRaySets(const VssRayContainer &sourceRays,
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265 | const int maxSize,
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266 | VssRayContainer &usedRays,
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267 | VssRayContainer *savedRays = NULL) const;
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268 |
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269 | /** Returns accumulated area of all view cells.
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270 | */
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271 | float GetAccVcArea();
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272 |
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273 | /** Returns area of one view cell.
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274 | */
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275 | virtual float GetArea(ViewCell *viewCell) const;
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276 |
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277 | /** Returns volume of view cell.
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278 | */
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279 | virtual float GetVolume(ViewCell *viewCell) const;
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280 |
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281 | /** Sets the current renderer mainly for view cells statistics.
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282 | */
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283 | void SetRenderer(Renderer *renderer);
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284 |
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285 | /** Computes a (random) view point in the valid view space.
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286 | @returns true if valid view point was found
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287 | */
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288 | virtual bool GetViewPoint(Vector3 &viewPoint) const;
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289 |
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290 | /** Returns true if this view point is in the valid view space.
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291 | */
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292 | virtual bool ViewPointValid(const Vector3 &viewPoint) const;
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293 |
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294 | /** Sets a view space boundary.
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295 | */
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296 | void SetViewSpaceBox(const AxisAlignedBox3 &box);
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297 |
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298 | AxisAlignedBox3 GetViewSpaceBox() const;
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299 |
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300 | /** Creates mesh for this view cell.
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301 | */
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302 | virtual void CreateMesh(ViewCell *vc) = NULL;
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303 |
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304 | /** Writes view cells to disc.
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305 | */
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306 | virtual bool ExportViewCells(const string filename,
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307 | const bool exportPvs,
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308 | const ObjectContainer &objects);
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309 |
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310 | /** Casts beam to collect view cells.
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311 | */
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312 | virtual int CastBeam(Beam &beam);
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313 |
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314 | /** Checks if view cell is considered as valid.
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315 | */
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316 | virtual bool CheckValidity(ViewCell *vc,
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317 | int minPvsSize,
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318 | int maxPvsSize) const;
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319 |
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320 |
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321 | /** Sets validity of view cell
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322 | */
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323 | virtual void SetValidity(ViewCell *vc,
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324 | int minPvsSize,
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325 | int maxPvsSize) const;
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326 |
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327 | /** sets validy of all viewcells
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328 | */
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329 | virtual void SetValidity(int minPvsSize,
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330 | int maxPvsSize) const;
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331 |
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332 |
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333 | /** set valid viewcells in the range of pvs. sorts the viewcells
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334 | according to the pvs and then pickups those in the ranges
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335 | */
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336 | void SetValidityPercentage(const float minValid, const float maxValid);
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337 |
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338 | int CountValidViewcells() const;
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339 |
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340 | /** Returns maximal allowed pvs size.
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341 | */
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342 | int GetMaxPvsSize() const;
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343 |
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344 | /** Returns maximal allowed pvs size.
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345 | */
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346 | int GetMinPvsSize() const;
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347 |
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348 | /** Returns maximal ratio. i.e., currentPVs / maxPvs,
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349 | where pvs is still considered valid.
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350 | */
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351 | float GetMaxPvsRatio() const;
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352 |
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353 | /** Exports view cell geometry.
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354 | */
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355 | virtual void ExportViewCellGeometry(Exporter *exporter,
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356 | ViewCell *vc,
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357 | const AxisAlignedPlane *clipPlane = NULL) const = 0;
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358 |
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359 | /** Brings the view cells into their final state, computes meshes and volume.
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360 | */
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361 | virtual void FinalizeViewCells(const bool createMesh);
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362 |
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363 | /** Evaluates statistics values on view cells.
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364 | */
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365 | void EvaluateRenderStatistics(float &totalRenderCost,
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366 | float &expectedRenderCost,
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367 | float &deviation,
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368 | float &variance,
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369 | int &totalPvs,
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370 | float &avgRenderCost);
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371 |
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372 |
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373 | /** Returns hierarchy of the view cells.
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374 | */
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375 | ViewCellsTree *GetViewCellsTree();
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376 |
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377 | virtual void CollectMergeCandidates(const VssRayContainer &rays,
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378 | vector<MergeCandidate> &candidates);
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379 |
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380 | void CollectViewCells(const int n);
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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 render cost statistics of current view cell hierarchy.
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387 | */
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388 | virtual void EvalViewCellPartition();
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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 | /** Returns maximal filter size.
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395 | */
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396 | int GetMaxFilterSize() const;
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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 | */
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400 | void DeleteLocalMergeTree(ViewCell *vc) const;
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401 |
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402 | /** Evaluautes histogram for a given number of view cells.
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403 | */
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404 | void EvalViewCellHistogram(const string filename, const int nViewCells);
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405 |
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406 | /** Evaluautes histogram for a given number of view cells.
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407 | */
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408 | void EvalViewCellHistogramForPvsSize(const string filename, const int nViewCells);
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409 |
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410 | /** Evaluates the render cost of a view cell.
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411 | */
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412 | float EvalRenderCost(Intersectable *obj) const;
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413 |
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414 | /** Sets pvs size of view cell as a scalar. Used when storing pvs only in the leaves
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415 | of the hierarchy.
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416 | */
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417 | void UpdateScalarPvsSize(ViewCell *vc, const int pvsSize, const int entriesInPvs) const;
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418 |
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419 | /** Returns bounding box of a view cell.
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420 | */
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421 | AxisAlignedBox3 GetViewCellBox(ViewCell *vc);
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422 |
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423 | /** Exports bounding boxes of objects to file.
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424 | */
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425 | bool ExportBoundingBoxes(const string filename, const ObjectContainer &objects) const;
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426 |
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427 | /** Load the bounding boxes into the container.
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428 | */
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429 | bool LoadBoundingBoxes(const string filename, IndexedBoundingBoxContainer &boxes) const;
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430 |
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431 | /** Returns true if pvs should be exported together with the view cells.
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432 | */
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433 | bool GetExportPvs() const;
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434 |
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435 | /** Loads view cells from file. The view cells manager is created with
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436 | respect to the loaded view cells.
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437 |
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438 | @param filename the filename of the view cells
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439 | @param objects the scene objects
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440 | @param finalizeViewCells if the view cells should be post processed, i.e.
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441 | a mesh is created representing the geometry
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442 | @param bconverter a conversion routine working with the similarities of bounding
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443 | boxes: if there is a certain similarity of overlap between bounding boxes, two tested
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444 | candidate objects are considered to be the same objects
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445 | @returns the view cells manager if loading was successful, false otherwise
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446 | */
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447 | static ViewCellsManager *LoadViewCells(const string &filename,
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448 | ObjectContainer *objects,
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449 | const bool finalizeViewCells,
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450 | BoundingBoxConverter *bconverter = NULL);
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451 |
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452 |
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453 | ////////////////////////////////////////////////////////7
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454 | // visiblity filter options
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455 | // TODO: write own visibiltiy filter class
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456 | void ApplyFilter(KdTree *kdTree,
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457 | const float viewSpaceFilterSize,
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458 | const float spatialFilterSize);
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459 |
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460 | void ApplySpatialFilter(KdTree *kdTree,
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461 | const float spatialFilterSize,
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462 | ObjectPvs &pvs);
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463 |
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464 | void ApplyFilter(ViewCell *viewCell,
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465 | KdTree *kdTree,
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466 | const float viewSpaceFilterSize,
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467 | const float spatialFilterSize,
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468 | ObjectPvs &pvs);
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469 |
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470 | float GetFilterWidth();
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471 |
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472 | float GetAbsFilterWidth();
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473 |
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474 |
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475 | /** Returns the bounding box of filter width.
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476 | */
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477 | AxisAlignedBox3 GetFilterBBox(const Vector3 &viewPoint, const float width) const;
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478 |
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479 |
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480 | /** Returns true if the view cell is equivalent to a
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481 | node of the spatial hierarchy. This function can be used for merged
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482 | view cell.
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483 | e.g. to see if the spatial tree can be reduced on this location
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484 | */
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485 | virtual bool EqualToSpatialNode(ViewCell *viewCell) const;
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486 |
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487 | /** If true, the kd nodes are stored instead of the object pvs.
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488 | */
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489 | void SetStoreKdPvs(const bool storeKdPvs);
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490 |
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491 | /** Returns true if the kd nodes are stored instead of the object pvs.
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492 | **/
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493 | bool GetStoreKdPVs() const;
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494 |
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495 | virtual bool AddSampleToPvs(
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496 | Intersectable *obj,
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497 | const Vector3 &hitPoint,
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498 | ViewCell *vc,
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499 | const float pdf,
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500 | float &contribution) const;
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501 |
|
---|
502 | protected:
|
---|
503 |
|
---|
504 | /** Exports bounding boxes as xml stream
|
---|
505 | */
|
---|
506 | //bool ExportBoundingBoxes(ofstream &xmlstream, const ObjectContainer &objects) const;
|
---|
507 |
|
---|
508 | /** Intersects box with the tree and returns the number of intersected boxes.
|
---|
509 | @returns number of view cells found
|
---|
510 | */
|
---|
511 | virtual int ComputeBoxIntersections(const AxisAlignedBox3 &box,
|
---|
512 | ViewCellContainer &viewCells) const;
|
---|
513 |
|
---|
514 | /** Tests the visibility filter functionality.
|
---|
515 | */
|
---|
516 | virtual void TestFilter(const ObjectContainer &objects) {};
|
---|
517 |
|
---|
518 | /** If the view cells tree was already constructed or not.
|
---|
519 | */
|
---|
520 | bool ViewCellsTreeConstructed() const;
|
---|
521 |
|
---|
522 | int CastPassSamples(const int samplesPerPass,
|
---|
523 | const int sampleType,
|
---|
524 | VssRayContainer &vssRays) const;
|
---|
525 |
|
---|
526 | /** Parse the options from the environment file.
|
---|
527 | */
|
---|
528 | void ParseEnvironment();
|
---|
529 |
|
---|
530 | /** Creates unique view cell ids.
|
---|
531 | */
|
---|
532 | void CreateUniqueViewCellIds();
|
---|
533 |
|
---|
534 | /** Finalizes, i.e., creates mesh, volume, area etc. for the view cell.
|
---|
535 | */
|
---|
536 | virtual void Finalize(ViewCell *viewCell, const bool createMesh);
|
---|
537 |
|
---|
538 | /** Recollects view cells and resets statistics.
|
---|
539 | */
|
---|
540 | void ResetViewCells();
|
---|
541 |
|
---|
542 | /** Collects the view cells in the view cell container.
|
---|
543 | */
|
---|
544 | virtual void CollectViewCells() = 0;
|
---|
545 |
|
---|
546 | /** Evaluates view cells statistics and stores it in
|
---|
547 | mViewCellsStatistics.
|
---|
548 | */
|
---|
549 | void EvaluateViewCellsStats();
|
---|
550 |
|
---|
551 | //-- helper functions for view cell visualization
|
---|
552 |
|
---|
553 | /** Exports the view cell partition.
|
---|
554 | */
|
---|
555 | void ExportViewCellsForViz(Exporter *exporter) const;
|
---|
556 |
|
---|
557 | /** Sets exporter color.
|
---|
558 | */
|
---|
559 | virtual void ExportColor(Exporter *exporter, ViewCell *vc) const;
|
---|
560 |
|
---|
561 | /** Returns volume of the view space.
|
---|
562 | */
|
---|
563 | virtual float GetViewSpaceVolume();
|
---|
564 |
|
---|
565 | /** Creates meshes from the view cells.
|
---|
566 | */
|
---|
567 | void CreateViewCellMeshes();
|
---|
568 |
|
---|
569 | /** Takes different measures to prepares the view cells after loading them from disc.
|
---|
570 | */
|
---|
571 | virtual void PrepareLoadedViewCells() {};
|
---|
572 |
|
---|
573 | /** Constructs local view cell merge hierarchy.
|
---|
574 | */
|
---|
575 | ViewCell *ConstructLocalMergeTree(ViewCell *currentViewCell,
|
---|
576 | const ViewCellContainer &viewCells);
|
---|
577 |
|
---|
578 | /** Constructs local view cell merge hierarchy based solely on similarity with the
|
---|
579 | current viewcell
|
---|
580 | */
|
---|
581 | ViewCell *ConstructLocalMergeTree2(ViewCell *currentViewCell,
|
---|
582 | const ViewCellContainer &viewCells);
|
---|
583 |
|
---|
584 | /** Creates clip plane for visualization.
|
---|
585 | */
|
---|
586 | void CreateClipPlane();
|
---|
587 |
|
---|
588 | /** Updates pvs of all view cells for statistical evaluation after some more sampling
|
---|
589 | */
|
---|
590 | void UpdatePvsForEvaluation(ViewCell *root, ObjectPvs &pvs);
|
---|
591 |
|
---|
592 |
|
---|
593 | ////////////////////////////////////////////////
|
---|
594 |
|
---|
595 | Preprocessor *mPreprocessor;
|
---|
596 | /// if bounding boxes should be exported together with the view cells
|
---|
597 | bool mExportBboxesForPvs;
|
---|
598 |
|
---|
599 | //Environment *environment;
|
---|
600 | AxisAlignedPlane mClipPlane;
|
---|
601 |
|
---|
602 | bool mUseClipPlaneForViz;
|
---|
603 |
|
---|
604 |
|
---|
605 | /// Renders the view cells.
|
---|
606 | Renderer *mRenderer;
|
---|
607 |
|
---|
608 | /// Loaded view cells
|
---|
609 | ViewCellContainer mViewCells;
|
---|
610 | /// the corresponding view cell tree holding the logical description of view cells
|
---|
611 | ViewCellsTree *mViewCellsTree;
|
---|
612 | /// if empty view cells should be pruned (i.e., invalidated) from this point on
|
---|
613 | bool mPruneEmptyViewCells;
|
---|
614 |
|
---|
615 | /// if the values in the view cell leaves and the interiors are up to date
|
---|
616 | /// this is meant for lazy storing of the pvs, where only a scalar indicating
|
---|
617 | /// pvs size is stored in interiors and not the pvs itself.
|
---|
618 | bool mViewCellPvsIsUpdated;
|
---|
619 |
|
---|
620 | /// maximum number of samples taken for construction of the view cells
|
---|
621 | int mConstructionSamples;
|
---|
622 | int mSamplesPerPass;
|
---|
623 | int mInitialSamples;
|
---|
624 | int mPostProcessSamples;
|
---|
625 | int mVisualizationSamples;
|
---|
626 |
|
---|
627 | float mTotalAreaValid;
|
---|
628 | float mTotalArea;
|
---|
629 |
|
---|
630 | int mMaxPvsSize;
|
---|
631 | int mMinPvsSize;
|
---|
632 | float mMaxPvsRatio;
|
---|
633 |
|
---|
634 | int mSamplingType;
|
---|
635 | int mEvaluationSamplingType;
|
---|
636 | int mNumActiveViewCells;
|
---|
637 | bool mCompressViewCells;
|
---|
638 |
|
---|
639 | /// holds the current view cell statistics
|
---|
640 | ViewCellsStatistics mCurrentViewCellsStats;
|
---|
641 | /// the scene bounding box
|
---|
642 | AxisAlignedBox3 mViewSpaceBox;
|
---|
643 |
|
---|
644 | /// if view cells should be exported
|
---|
645 | bool mExportViewCells;
|
---|
646 |
|
---|
647 | // if only valid view cells should be considered for processing
|
---|
648 | bool mOnlyValidViewCells;
|
---|
649 |
|
---|
650 | /// if rays should be used to collect merge candidates
|
---|
651 | bool mUseRaysForMerge;
|
---|
652 |
|
---|
653 | /// if there should be an additional merge step after the subdivision
|
---|
654 | bool mMergeViewCells;
|
---|
655 |
|
---|
656 | /// the width of the box filter
|
---|
657 | float mFilterWidth;
|
---|
658 | int mMaxFilterSize;
|
---|
659 |
|
---|
660 | //-- visualization options
|
---|
661 |
|
---|
662 | /// color code for view cells visualization
|
---|
663 | int mColorCode;
|
---|
664 | bool mExportGeometry;
|
---|
665 | bool mExportRays;
|
---|
666 |
|
---|
667 | bool mViewCellsFinished;
|
---|
668 |
|
---|
669 | bool mEvaluateViewCells;
|
---|
670 |
|
---|
671 | bool mShowVisualization;
|
---|
672 |
|
---|
673 | int mRenderCostEvaluationType;
|
---|
674 |
|
---|
675 | /// if pvs should be exported with view cells
|
---|
676 | bool mExportPvs;
|
---|
677 |
|
---|
678 | bool mStoreObjectPvs;
|
---|
679 |
|
---|
680 | VssRayContainer storedRays;
|
---|
681 | };
|
---|
682 |
|
---|
683 |
|
---|
684 | /**
|
---|
685 | Manages different higher order operations on the view cells.
|
---|
686 | */
|
---|
687 | class BspViewCellsManager: public ViewCellsManager
|
---|
688 | {
|
---|
689 |
|
---|
690 | public:
|
---|
691 | /** Constructor taking the bsp tree and the number of samples
|
---|
692 | used to construct the bsp tree.
|
---|
693 | */
|
---|
694 | BspViewCellsManager(ViewCellsTree *viewCellsTree, BspTree *tree);
|
---|
695 |
|
---|
696 | ~BspViewCellsManager();
|
---|
697 |
|
---|
698 | int ConstructSubdivision(const ObjectContainer &objects,
|
---|
699 | const VssRayContainer &rays);
|
---|
700 |
|
---|
701 | int PostProcess(const ObjectContainer &objects,
|
---|
702 | const VssRayContainer &rays);
|
---|
703 |
|
---|
704 | void Visualize(const ObjectContainer &objects,
|
---|
705 | const VssRayContainer &sampleRays);
|
---|
706 |
|
---|
707 | int GetType() const;
|
---|
708 |
|
---|
709 | ViewCell *GenerateViewCell(Mesh *mesh = NULL) const;
|
---|
710 |
|
---|
711 | bool ViewCellsConstructed() const;
|
---|
712 |
|
---|
713 | //void PrintStatistics(ostream &s) const;
|
---|
714 |
|
---|
715 | int CastLineSegment(const Vector3 &origin,
|
---|
716 | const Vector3 &termination,
|
---|
717 | ViewCellContainer &viewcells);
|
---|
718 |
|
---|
719 | float GetProbability(ViewCell *viewCell);
|
---|
720 |
|
---|
721 |
|
---|
722 | /** Get a viewcell containing the specified point
|
---|
723 | */
|
---|
724 | ViewCell *GetViewCell(const Vector3 &point, const bool active = false) const;
|
---|
725 |
|
---|
726 | void CreateMesh(ViewCell *vc);
|
---|
727 |
|
---|
728 | void ExportViewCellGeometry(Exporter *exporter,
|
---|
729 | ViewCell *vc,
|
---|
730 | const AxisAlignedPlane *clipPlane = NULL) const;
|
---|
731 |
|
---|
732 | void CollectMergeCandidates(const VssRayContainer &rays,
|
---|
733 | vector<MergeCandidate> &candidates);
|
---|
734 |
|
---|
735 | void Finalize(ViewCell *viewCell, const bool createMesh);
|
---|
736 |
|
---|
737 | bool ExportViewCells(const string filename, const bool exportPvs, const ObjectContainer &objects);
|
---|
738 |
|
---|
739 | /** Constructs merge hierarchy which corresponds to the spatial hierarchy.
|
---|
740 | */
|
---|
741 | ViewCell *ConstructSpatialMergeTree(BspNode *root);
|
---|
742 |
|
---|
743 |
|
---|
744 | protected:
|
---|
745 |
|
---|
746 | void CollectViewCells();
|
---|
747 |
|
---|
748 |
|
---|
749 | /// the BSP tree.
|
---|
750 | BspTree *mBspTree;
|
---|
751 |
|
---|
752 | vector<BspRay *> mBspRays;
|
---|
753 |
|
---|
754 | private:
|
---|
755 |
|
---|
756 | /** Exports visualization of the BSP splits.
|
---|
757 | */
|
---|
758 | void ExportSplits(const ObjectContainer &objects);
|
---|
759 |
|
---|
760 | /** Exports visualization of the BSP PVS.
|
---|
761 | */
|
---|
762 | void ExportBspPvs(const ObjectContainer &objects);
|
---|
763 |
|
---|
764 | /** test if subdivision is valid in terms of volume / area.
|
---|
765 | */
|
---|
766 | void TestSubdivision();
|
---|
767 | };
|
---|
768 |
|
---|
769 | /**
|
---|
770 | Manages different higher order operations on the KD type view cells.
|
---|
771 | */
|
---|
772 | class KdViewCellsManager: public ViewCellsManager
|
---|
773 | {
|
---|
774 |
|
---|
775 | public:
|
---|
776 |
|
---|
777 | KdViewCellsManager(ViewCellsTree *viewCellsTree, KdTree *tree);
|
---|
778 |
|
---|
779 | int ConstructSubdivision(const ObjectContainer &objects,
|
---|
780 | const VssRayContainer &rays);
|
---|
781 |
|
---|
782 | int CastLineSegment(const Vector3 &origin,
|
---|
783 | const Vector3 &termination,
|
---|
784 | ViewCellContainer &viewcells);
|
---|
785 |
|
---|
786 | int PostProcess(const ObjectContainer &objects,
|
---|
787 | const VssRayContainer &rays);
|
---|
788 |
|
---|
789 | void Visualize(const ObjectContainer &objects,
|
---|
790 | const VssRayContainer &sampleRays);
|
---|
791 |
|
---|
792 | int GetType() const;
|
---|
793 |
|
---|
794 | bool ViewCellsConstructed() const;
|
---|
795 |
|
---|
796 | ViewCell *GenerateViewCell(Mesh *mesh) const;
|
---|
797 |
|
---|
798 | /** Prints out statistics of this approach.
|
---|
799 | */
|
---|
800 | // virtual void PrintStatistics(ostream &s) const;
|
---|
801 | ViewCell *GetViewCell(const Vector3 &point, const bool active = false) const { return NULL; }
|
---|
802 |
|
---|
803 | float GetProbability(ViewCell *viewCell);
|
---|
804 |
|
---|
805 |
|
---|
806 | void CreateMesh(ViewCell *vc);
|
---|
807 |
|
---|
808 | void ExportViewCellGeometry(Exporter *exporter,
|
---|
809 | ViewCell *vc,
|
---|
810 | const AxisAlignedPlane *clipPlane = NULL) const;
|
---|
811 |
|
---|
812 | void CollectMergeCandidates(const VssRayContainer &rays,
|
---|
813 | vector<MergeCandidate> &candidates);
|
---|
814 |
|
---|
815 |
|
---|
816 | protected:
|
---|
817 |
|
---|
818 | /** Collects view cells from a hierarchy.
|
---|
819 | */
|
---|
820 | void CollectViewCells();
|
---|
821 |
|
---|
822 | KdNode *GetNodeForPvs(KdLeaf *leaf);
|
---|
823 |
|
---|
824 |
|
---|
825 | /// the BSP tree.
|
---|
826 | KdTree *mKdTree;
|
---|
827 |
|
---|
828 | /// depth of the KD tree nodes with represent the view cells
|
---|
829 | int mKdPvsDepth;
|
---|
830 |
|
---|
831 |
|
---|
832 | };
|
---|
833 |
|
---|
834 | /**
|
---|
835 | Manages different higher order operations on the view cells.
|
---|
836 | */
|
---|
837 | class VspBspViewCellsManager: public ViewCellsManager
|
---|
838 | {
|
---|
839 |
|
---|
840 | public:
|
---|
841 |
|
---|
842 | VspBspViewCellsManager(ViewCellsTree *viewCellsTree, VspBspTree *tree);
|
---|
843 | ~VspBspViewCellsManager();
|
---|
844 |
|
---|
845 | int ConstructSubdivision(const ObjectContainer &objects,
|
---|
846 | const VssRayContainer &rays);
|
---|
847 |
|
---|
848 | int PostProcess(const ObjectContainer &objects,
|
---|
849 | const VssRayContainer &rays);
|
---|
850 |
|
---|
851 | void Visualize(const ObjectContainer &objects,
|
---|
852 | const VssRayContainer &sampleRays);
|
---|
853 |
|
---|
854 | int GetType() const;
|
---|
855 |
|
---|
856 | ViewCell *GenerateViewCell(Mesh *mesh = NULL) const;
|
---|
857 |
|
---|
858 | bool ViewCellsConstructed() const;
|
---|
859 |
|
---|
860 |
|
---|
861 | int CastLineSegment(const Vector3 &origin,
|
---|
862 | const Vector3 &termination,
|
---|
863 | ViewCellContainer &viewcells);
|
---|
864 |
|
---|
865 | float GetProbability(ViewCell *viewCell);
|
---|
866 |
|
---|
867 | ViewCell *GetViewCell(const Vector3 &point, const bool active = false) const;
|
---|
868 |
|
---|
869 | bool GetViewPoint(Vector3 &viewPoint) const;
|
---|
870 |
|
---|
871 | bool ViewPointValid(const Vector3 &viewPoint) const;
|
---|
872 |
|
---|
873 | void CreateMesh(ViewCell *vc);
|
---|
874 |
|
---|
875 | bool ExportViewCells(const string filename, const bool exportPvs, const ObjectContainer &objects);
|
---|
876 |
|
---|
877 | int CastBeam(Beam &beam);
|
---|
878 |
|
---|
879 | void ExportViewCellGeometry(Exporter *exporter,
|
---|
880 | ViewCell *vc,
|
---|
881 | const AxisAlignedPlane *clipPlane = NULL) const;
|
---|
882 |
|
---|
883 | //float GetVolume(ViewCell *viewCell) const;
|
---|
884 |
|
---|
885 | void Finalize(ViewCell *viewCell, const bool createMesh);
|
---|
886 |
|
---|
887 | void CollectMergeCandidates(const VssRayContainer &rays, vector<MergeCandidate> &candidates);
|
---|
888 |
|
---|
889 | /** Returns true if this view cell is equivavalent to a spatial node.
|
---|
890 | */
|
---|
891 | bool EqualToSpatialNode(ViewCell *viewCell) const;
|
---|
892 |
|
---|
893 |
|
---|
894 | protected:
|
---|
895 |
|
---|
896 | int ComputeBoxIntersections(const AxisAlignedBox3 &box, ViewCellContainer &viewCells) const;
|
---|
897 |
|
---|
898 | /** Returns node of the spatial hierarchy corresponding to the view cell
|
---|
899 | if such a node exists.
|
---|
900 | */
|
---|
901 | BspNode *GetSpatialNode(ViewCell *viewCell) const;
|
---|
902 |
|
---|
903 | /** Merges view cells according to some criteria
|
---|
904 | */
|
---|
905 | void MergeViewCells(const VssRayContainer &rays,
|
---|
906 | const ObjectContainer &objects);
|
---|
907 |
|
---|
908 | void RefineViewCells(const VssRayContainer &rays, const ObjectContainer &objects);
|
---|
909 |
|
---|
910 | void CollectViewCells();
|
---|
911 |
|
---|
912 | /** Returns maximal depth difference of view cell
|
---|
913 | leaves in tree.
|
---|
914 | */
|
---|
915 | int GetMaxTreeDiff(ViewCell *vc) const;
|
---|
916 |
|
---|
917 |
|
---|
918 | /** Prepare view cells for use after loading them from disc.
|
---|
919 | */
|
---|
920 | void PrepareLoadedViewCells();
|
---|
921 |
|
---|
922 | /** Constructs merge hierarchy which corresponds to the spatial hierarchy.
|
---|
923 | */
|
---|
924 | ViewCell *ConstructSpatialMergeTree(BspNode *root);
|
---|
925 |
|
---|
926 | /// HACK for testing visibility filter functionality
|
---|
927 | void TestFilter(const ObjectContainer &objects);
|
---|
928 |
|
---|
929 | /** Visualization of the pvs difference to exact visubility using
|
---|
930 | from point queries.
|
---|
931 | */
|
---|
932 | void VisualizeWithFromPointQueries();
|
---|
933 |
|
---|
934 | /** Evaluate from point queries for the current scene.
|
---|
935 | */
|
---|
936 | void EvalFromPointQueries();
|
---|
937 |
|
---|
938 | /** Exports visualization of the BSP splits.
|
---|
939 | */
|
---|
940 | void ExportSplits(const ObjectContainer &objects,
|
---|
941 | const VssRayContainer &rays);
|
---|
942 |
|
---|
943 | /** Exports visualization of the BSP PVS.
|
---|
944 | */
|
---|
945 | void ExportBspPvs(const ObjectContainer &objects,
|
---|
946 | const VssRayContainer &rays);
|
---|
947 |
|
---|
948 |
|
---|
949 | /// the view space partition BSP tree.
|
---|
950 | VspBspTree *mVspBspTree;
|
---|
951 |
|
---|
952 |
|
---|
953 | private:
|
---|
954 |
|
---|
955 | /** test if subdivision is valid in terms of volume / area.
|
---|
956 | */
|
---|
957 | void TestSubdivision();
|
---|
958 | };
|
---|
959 |
|
---|
960 | #define TEST_EVALUATION 1
|
---|
961 |
|
---|
962 | /**
|
---|
963 | Manages different higher order operations on the view cells.
|
---|
964 | */
|
---|
965 | class VspOspViewCellsManager: public ViewCellsManager
|
---|
966 | {
|
---|
967 |
|
---|
968 | public:
|
---|
969 |
|
---|
970 | VspOspViewCellsManager(ViewCellsTree *vcTree, HierarchyManager *hm);
|
---|
971 |
|
---|
972 | ~VspOspViewCellsManager();
|
---|
973 |
|
---|
974 | int ConstructSubdivision(const ObjectContainer &objects,
|
---|
975 | const VssRayContainer &rays);
|
---|
976 |
|
---|
977 | int PostProcess(const ObjectContainer &objects,
|
---|
978 | const VssRayContainer &rays);
|
---|
979 |
|
---|
980 | void Visualize(const ObjectContainer &objects,
|
---|
981 | const VssRayContainer &sampleRays);
|
---|
982 |
|
---|
983 | int GetType() const;
|
---|
984 |
|
---|
985 | ViewCell *GenerateViewCell(Mesh *mesh = NULL) const;
|
---|
986 |
|
---|
987 | bool ViewCellsConstructed() const;
|
---|
988 |
|
---|
989 |
|
---|
990 | int CastLineSegment(const Vector3 &origin,
|
---|
991 | const Vector3 &termination,
|
---|
992 | ViewCellContainer &viewcells);
|
---|
993 |
|
---|
994 | float GetProbability(ViewCell *viewCell);
|
---|
995 |
|
---|
996 | ViewCell *GetViewCell(const Vector3 &point, const bool active = false) const;
|
---|
997 |
|
---|
998 | bool GetViewPoint(Vector3 &viewPoint) const;
|
---|
999 |
|
---|
1000 | bool ViewPointValid(const Vector3 &viewPoint) const;
|
---|
1001 |
|
---|
1002 | void CreateMesh(ViewCell *vc);
|
---|
1003 |
|
---|
1004 | bool ExportViewCells(const string filename,
|
---|
1005 | const bool exportPvs,
|
---|
1006 | const ObjectContainer &objects);
|
---|
1007 |
|
---|
1008 | int CastBeam(Beam &beam);
|
---|
1009 |
|
---|
1010 | void Finalize(ViewCell *viewCell, const bool createMesh);
|
---|
1011 |
|
---|
1012 | /** Stores sample contribution for kd cells or objects.
|
---|
1013 | */
|
---|
1014 | virtual float ComputeSampleContribution(VssRay &ray,
|
---|
1015 | const bool addRays,
|
---|
1016 | const bool storeViewCells);
|
---|
1017 |
|
---|
1018 | ViewCellsManager *LoadViewCells(const string &filename,
|
---|
1019 | ObjectContainer *objects,
|
---|
1020 | const bool finalizeViewCells,
|
---|
1021 | BoundingBoxConverter *bconverter);
|
---|
1022 |
|
---|
1023 | bool AddSampleToPvs(
|
---|
1024 | Intersectable *obj,
|
---|
1025 | const Vector3 &hitPoint,
|
---|
1026 | ViewCell *vc,
|
---|
1027 | const float pdf,
|
---|
1028 | float &contribution) const;
|
---|
1029 |
|
---|
1030 | protected:
|
---|
1031 |
|
---|
1032 | #if TEST_EVALUATION
|
---|
1033 | virtual void EvalViewCellPartition();
|
---|
1034 | #endif
|
---|
1035 | /** Exports view cell geometry.
|
---|
1036 | */
|
---|
1037 | void ExportViewCellGeometry(Exporter *exporter,
|
---|
1038 | ViewCell *vc,
|
---|
1039 | const AxisAlignedPlane *clipPlane = NULL) const;
|
---|
1040 |
|
---|
1041 | int ComputeBoxIntersections(const AxisAlignedBox3 &box,
|
---|
1042 | ViewCellContainer &viewCells) const;
|
---|
1043 |
|
---|
1044 | void CollectViewCells();
|
---|
1045 |
|
---|
1046 |
|
---|
1047 | /** Prepare view cells for use after loading them from disc.
|
---|
1048 | */
|
---|
1049 | void PrepareLoadedViewCells();
|
---|
1050 |
|
---|
1051 | /** Constructs merge hierarchy which corresponds to the spatial hierarchy.
|
---|
1052 | */
|
---|
1053 | ViewCell *ConstructSpatialMergeTree(VspNode *root);
|
---|
1054 |
|
---|
1055 | /** Exports visualization of the PVS.
|
---|
1056 | */
|
---|
1057 | void ExportPvs(
|
---|
1058 | const ObjectContainer &objects,
|
---|
1059 | const VssRayContainer &rays);
|
---|
1060 |
|
---|
1061 |
|
---|
1062 | /////////////////////////////////////////
|
---|
1063 |
|
---|
1064 | /// the view space / object partition hierarchies
|
---|
1065 | //VspTree *mVspTree;
|
---|
1066 | //OspTree *mOspTree;
|
---|
1067 | //BvHierarchy *mBvHierarchy;
|
---|
1068 |
|
---|
1069 | HierarchyManager *mHierarchyManager;
|
---|
1070 | };
|
---|
1071 |
|
---|
1072 |
|
---|
1073 | /*class ViewCellsManagerFactory
|
---|
1074 | {
|
---|
1075 | public:
|
---|
1076 | ViewCellsManager *Create(const string mName);
|
---|
1077 | };*/
|
---|
1078 |
|
---|
1079 | }
|
---|
1080 |
|
---|
1081 | #endif
|
---|