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 | struct IndexedBoundingBox: public std::pair<int, AxisAlignedBox3>
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52 | {
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53 | typedef std::pair<int, AxisAlignedBox3> IndexedBoundingBoxParent;
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54 |
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55 | IndexedBoundingBox(int idx, const AxisAlignedBox3 &box): IndexedBoundingBoxParent(idx, box)
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56 | {
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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};
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76 |
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77 | /// view cells evaluation type
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78 | enum {PER_OBJECT, PER_TRIANGLE};
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79 |
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80 | /** Constructor taking the initial and construction samples.
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81 | @param initialSamples the maximal number of samples used for creating the hierarchy
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82 | of view cells
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83 | @param constructionSamples the maximal number of samples used for construction
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84 | */
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85 | ViewCellsManager(const int initialSamples, const int constructionSamples);
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86 |
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87 | ViewCellsManager();
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88 |
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89 | virtual ~ViewCellsManager();
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90 |
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91 | /** Constructs view cells container taking a preprocessor
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92 | @returns the output rays (if not null)
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93 | */
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94 | int Construct(Preprocessor *preprocessor, VssRayContainer *outRays = NULL);
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95 |
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96 | /** Constructs view cell container with a given number of samples.
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97 | */
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98 | virtual int ConstructSubdivision(const ObjectContainer &objects,
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99 | const VssRayContainer &rays) = 0;
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100 |
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101 | /** Computes sample contributions of the rays to the view cells PVS.
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102 |
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103 | @param rays bundle of rays used to find intersections with view cells and
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104 | adding the contribution
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105 | @param addRays true if rays should be added to the PVSs of the viewcells they
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106 | intersect
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107 | @param storeViewCells true if view cells should be stored in the ray
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108 | */
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109 | float ComputeSampleContributions(const VssRayContainer &rays,
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110 | const bool addContributions,
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111 | const bool storeViewCells);
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112 |
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113 | /** Add sample contributions to the viewcells they intersect */
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114 | void AddSampleContributions(const VssRayContainer &rays);
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115 |
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116 |
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117 | /** Computes sample contribution of a simgle ray to the view cells PVS.
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118 | @param ray finds intersections with view cells and holds the contribution
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119 | @param castRay true if ray should be cast to gain the information, false if ray
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120 | is already holding the information and need not be recast.
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121 |
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122 | @returns number of sample contributions
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123 | */
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124 | virtual float ComputeSampleContributions(VssRay &ray,
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125 | const bool addRays,
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126 | const bool storeViewCells);
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127 |
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128 | virtual void AddSampleContributions(VssRay &ray);
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129 |
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130 | /** Prints out statistics of the view cells.
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131 | */
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132 | virtual void PrintStatistics(ostream &s) const;
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133 |
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134 | /** Post processes view cells givemŽa number of rays.
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135 | */
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136 | virtual int PostProcess(const ObjectContainer &objects,
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137 | const VssRayContainer &rays) = 0;
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138 |
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139 | /** Show visualization of the view cells.
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140 | */
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141 | virtual void Visualize(const ObjectContainer &objects,
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142 | const VssRayContainer &sampleRays) = 0;
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143 |
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144 | /** type of the view cell container.
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145 | */
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146 | virtual int GetType() const = 0;
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147 |
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148 | /** Load the input viewcells. The input viewcells should be given as a collection
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149 | of meshes. Each mesh is assume to form a bounded polyhedron defining the interior of
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150 | the viewcell. The method then builds a BSP tree of these view cells.
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151 |
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152 | @param filename file to load
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153 | @return true on success
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154 | */
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155 | virtual bool LoadViewCellsGeometry(const string filename);
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156 |
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157 |
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158 | /** Constructs view cell from base triangle. The ViewCell is extruded along the normal vector.
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159 | @param the base triangle
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160 | @param the height of the newly created view cell
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161 | */
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162 | ViewCell *ExtrudeViewCell(const Triangle3 &baseTri, const float height) const;
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163 |
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164 | /** Merges two view cells.
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165 | @note the piercing rays of the front and back will be ordered
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166 | @returns new view cell based on the merging.
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167 | */
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168 | ViewCellInterior *MergeViewCells(ViewCell *front, ViewCell *back) const;
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169 |
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170 | /** Merges a container of view cells.
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171 | @returns new view cell based on the merging.
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172 | */
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173 | ViewCellInterior *MergeViewCells(ViewCellContainer &children) const;
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174 |
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175 | /** Generates view cell of type specified by this manager
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176 | */
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177 | virtual ViewCell *GenerateViewCell(Mesh *mesh = NULL) const = 0;
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178 |
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179 | /** Adds a new view cell to the list of predefined view cells.
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180 | */
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181 | void AddViewCell(ViewCell *viewCell);
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182 |
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183 | /** Derive view cells from objects.
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184 | */
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185 | void DeriveViewCells(const ObjectContainer &objects,
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186 | ViewCellContainer &viewCells,
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187 | const int maxViewCells) const;
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188 |
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189 | /** Sets maximal number of samples used for the
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190 | construction of the view cells.
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191 | */
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192 | void SetVisualizationSamples(const int visSamples);
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193 |
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194 | /** Sets maximal number of samples used for the construction of the view cells.
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195 | */
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196 | void SetConstructionSamples(const int constructionSamples);
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197 |
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198 | /** Sets maximal number of samples used for the visualization of the view cells.
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199 | */
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200 | void SetInitialSamples(const int initialSamples);
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201 |
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202 | /** Sets maximal number of samples used for the post processing of the view cells.
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203 | */
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204 | void SetPostProcessSamples(const int postProcessingSamples);
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205 |
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206 | /** See set.
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207 | */
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208 | int GetVisualizationSamples() const;
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209 |
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210 | /** See set.
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211 | */
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212 | int GetConstructionSamples() const;
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213 |
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214 | /** See set.
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215 | */
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216 | int GetPostProcessSamples() const;
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217 |
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218 | /** Returns true if view cells wer already constructed.
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219 | */
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220 | virtual bool ViewCellsConstructed() const = 0;
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221 |
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222 | /** cast line segment to get a list of unique viewcells which are intersected
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223 | by this line segment
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224 | */
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225 |
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226 | virtual int CastLineSegment(const Vector3 &origin,
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227 | const Vector3 &termination,
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228 | ViewCellContainer &viewcells
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229 | ) = 0;
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230 |
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231 | virtual void GetPvsStatistics(PvsStatistics &stat);
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232 |
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233 | virtual void GetPrVS(const Vector3 &viewPoint, PrVs &prvs);
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234 |
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235 | /** Get a viewcell containing the specified point
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236 | */
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237 | virtual ViewCell *GetViewCell(const Vector3 &point) const = 0;
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238 |
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239 | virtual void PrintPvsStatistics(ostream &s);
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240 |
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241 | /** Updates pvs of the view cell hierarchy if necessary.
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242 | */
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243 | void UpdatePvs();
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244 |
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245 | /** Returns probability that view point lies in one view cell.
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246 | */
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247 | virtual float GetProbability(ViewCell *viewCell) = 0;
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248 |
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249 | /** Returns render cost of a single view cell given the render cost of an object.
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250 | */
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251 | float GetRendercost(ViewCell *viewCell) const;
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252 |
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253 | /** Returns reference to container of loaded / generated view cells.
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254 | */
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255 | ViewCellContainer &GetViewCells();
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256 |
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257 | /** Helper function used to split ray sets uniformly
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258 | into one that is currently used and the other that
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259 | is saved for later processing.
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260 | @param sourceRays the input ray set
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261 | @param maxSize the maximal number of rays that will be used
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262 | @param usedRays returns the used ray set
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263 | @param savedRays if not null, returns the saved ray set
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264 | */
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265 | void GetRaySets(const VssRayContainer &sourceRays,
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266 | const int maxSize,
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267 | VssRayContainer &usedRays,
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268 | VssRayContainer *savedRays = NULL) const;
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269 |
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270 | /** Returns accumulated area of all view cells.
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271 | */
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272 | float GetAccVcArea();
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273 |
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274 | /** Returns area of one view cell.
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275 | */
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276 | virtual float GetArea(ViewCell *viewCell) const;
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277 |
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278 | /** Returns volume of view cell.
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279 | */
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280 | virtual float GetVolume(ViewCell *viewCell) const;
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281 |
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282 | /** Sets the current renderer mainly for view cells statistics.
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283 | */
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284 | void SetRenderer(Renderer *renderer);
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285 |
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286 | /** Computes a (random) view point in the valid view space.
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287 | @returns true if valid view point was found
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288 | */
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289 | virtual bool GetViewPoint(Vector3 &viewPoint) const;
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290 |
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291 | /** Returns true if this view point is in the valid view space.
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292 | */
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293 | virtual bool ViewPointValid(const Vector3 &viewPoint) const;
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294 |
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295 | /** Sets a view space boundary.
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296 | */
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297 | void SetViewSpaceBox(const AxisAlignedBox3 &box);
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298 |
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299 | AxisAlignedBox3 GetViewSpaceBox() const;
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300 |
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301 | /** Creates mesh for this view cell.
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302 | */
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303 | virtual void CreateMesh(ViewCell *vc) = NULL;
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304 |
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305 | /** Writes view cells to disc.
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306 | */
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307 | virtual bool ExportViewCells(const string filename);
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308 |
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309 | /** Casts beam to collect view cells.
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310 | */
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311 | virtual int CastBeam(Beam &beam);
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312 |
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313 | /** Checks if view cell is considered as valid.
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314 | */
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315 | virtual bool CheckValidity(ViewCell *vc,
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316 | int minPvsSize,
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317 | int maxPvsSize) const;
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318 |
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319 |
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320 | /** Sets validity of view cell
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321 | */
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322 | virtual void SetValidity(ViewCell *vc,
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323 | int minPvsSize,
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324 | int maxPvsSize) const;
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325 |
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326 | /** sets validy of all viewcells
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327 | */
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328 | virtual void SetValidity(int minPvsSize,
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329 | int maxPvsSize) const;
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330 |
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331 |
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332 | /** set valid viewcells in the range of pvs. sorts the viewcells
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333 | according to the pvs and then pickups those in the ranges
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334 | */
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335 | void SetValidityPercentage(const float minValid, const float maxValid);
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336 |
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337 | int CountValidViewcells() const;
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338 |
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339 | /** Returns maximal allowed pvs size.
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340 | */
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341 | int GetMaxPvsSize() const;
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342 |
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343 | /** Returns maximal allowed pvs size.
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344 | */
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345 | int GetMinPvsSize() const;
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346 |
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347 | /** Returns maximal ratio. i.e., currentPVs / maxPvs,
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348 | where pvs is still considered valid.
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349 | */
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350 | float GetMaxPvsRatio() const;
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351 |
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352 | /** Exports view cell geometry.
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353 | */
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354 | virtual void ExportViewCellGeometry(Exporter *exporter,
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355 | ViewCell *vc,
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356 | const Plane3 *clipPlane = NULL) const = 0;
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357 |
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358 | virtual void FinalizeViewCells(const bool createMesh);
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359 |
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360 |
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361 | /** Loads view cells from file. The view cells manager is created with
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362 | respect to the loaded view cells.
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363 |
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364 | @returns the view cells manager if loading was successful, false otherwise
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365 | */
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366 | static ViewCellsManager *LoadViewCells(const string filename,
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367 | ObjectContainer *objects);
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368 |
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369 | /** Evaluates statistics values on view cells.
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370 | */
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371 | void EvaluateRenderStatistics(float &totalRenderCost,
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372 | float &expectedRenderCost,
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373 | float &deviation,
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374 | float &variance,
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375 | int &totalPvs,
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376 | float &avgRenderCost);
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377 |
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378 |
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379 | /** Returns hierarchy of the view cells.
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380 | */
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381 | ViewCellsTree *GetViewCellsTree();
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382 |
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383 | virtual void CollectMergeCandidates(const VssRayContainer &rays,
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384 | vector<MergeCandidate> &candidates) = 0;
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385 |
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386 | void CollectViewCells(const int n);
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387 |
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388 | /** Returns true if this (logical) view cell is equal to a spatial node.
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389 | */
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390 | virtual bool EqualToSpatialNode(ViewCell *viewCell) const;
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391 |
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392 | /** Sets current view cells set to active, i.e., the sampling is done in this view cell set.
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393 | */
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394 | void SetViewCellsActive();
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395 |
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396 | /** Evaluates worth of current view cell hierarchy.
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397 | */
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398 | void EvalViewCellPartition(Preprocessor *preprocessor);
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399 |
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400 | /** Sets maximal size of a view cell filter.
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401 | */
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402 | void SetMaxFilterSize(const int size);
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403 |
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404 | /** Returns maximal filter size.
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405 | */
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406 | int GetMaxFilterSize() const;
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407 |
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408 | /** Deletes interior nodes from the tree which have negative merge cost set (local merge).
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409 | */
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410 | void DeleteLocalMergeTree(ViewCell *vc) const;
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411 |
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412 | /** Evaluautes histogram for a given number of view cells.
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413 | */
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414 | void EvalViewCellHistogram(const string filename, const int nViewCells);
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415 |
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416 | /** Evaluautes histogram for a given number of view cells.
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417 | */
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418 | void EvalViewCellHistogramForPvsSize(const string filename, const int nViewCells);
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419 |
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420 | /** Evaluates the render cost of a view cell.
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421 | */
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422 | float EvalRenderCost(Intersectable *obj) const;
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423 |
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424 | void
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425 | ApplyFilter(KdTree *kdTree,
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426 | const float viewSpaceFilterSize,
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427 | const float spatialFilterSize
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428 | );
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429 |
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430 | AxisAlignedBox3
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431 | GetViewCellBox(ViewCell *vc);
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432 |
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433 | /** Exports bounding boxes of objects to file.
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434 | */
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435 | bool ExportBoundingBoxes(const string filename, const ObjectContainer &objects) const;
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436 |
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437 | /** Load the bounding boxes into the container.
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438 | */
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439 | bool LoadBoundingBoxes(const string filename, IndexedBoundingBoxContainer &boxes) const;
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440 |
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441 | protected:
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442 | void
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443 | ApplyFilter(ViewCell *viewCell,
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444 | KdTree *kdTree,
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445 | const float viewSpaceFilterSize,
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446 | const float spatialFilterSize,
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447 | ObjectPvs &pvs
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448 | );
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449 |
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450 |
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451 | /** Returns the bounding box of filter width.
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452 | */
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453 | AxisAlignedBox3 GetFilterBBox(const Vector3 &viewPoint, const float width) const;
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454 |
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455 | /** Intersects box with the tree and returns the number of intersected boxes.
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456 | @returns number of view cells found
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457 | */
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458 | virtual int ComputeBoxIntersections(const AxisAlignedBox3 &box,
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459 | ViewCellContainer &viewCells) const;
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460 |
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461 | virtual void TestFilter(const ObjectContainer &objects) {};
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462 |
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463 | /**
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464 | if the view cells tree was already constructed or not.
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465 | */
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466 | bool ViewCellsTreeConstructed() const;
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467 |
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468 | int CastPassSamples(const int samplesPerPass,
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469 | const int sampleType,
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470 | VssRayContainer &vssRays) const;
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471 |
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472 | void ParseEnvironment();
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473 |
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474 | /** Creates unique view cell ids.
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475 | */
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476 | void CreateUniqueViewCellIds();
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477 |
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478 | /** Finalizes, i.e., creates mesh, volume, area etc. for the view cell.
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479 | */
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480 | virtual void Finalize(ViewCell *viewCell, const bool createMesh);
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481 |
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482 | /** Recollects view cells and resets statistics.
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483 | */
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484 | void ResetViewCells();
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485 |
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486 | /** Collects the view cells in the view cell container.
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487 | */
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488 | virtual void CollectViewCells() = 0;
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489 |
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490 | /** Evaluates view cells statistics and stores it in
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491 | mViewCellsStatistics.
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492 | */
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493 | void EvaluateViewCellsStats();
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494 |
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495 | //-- helper functions for view cell visualization
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496 |
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497 | /** Exports the view cell partition.
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498 | */
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499 | void ExportViewCellsForViz(Exporter *exporter) const;
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500 |
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501 | /** Sets exporter color.
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502 | */
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503 | virtual void ExportColor(Exporter *exporter, ViewCell *vc) const = 0;
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504 |
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505 |
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506 | virtual float GetViewSpaceVolume();
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507 |
|
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508 | /** Creates meshes from the view cells.
|
---|
509 | */
|
---|
510 | void CreateViewCellMeshes();
|
---|
511 |
|
---|
512 | /** Takes different measures to prepares the view cells after loading them from disc.
|
---|
513 | */
|
---|
514 | virtual void PrepareLoadedViewCells() {};
|
---|
515 |
|
---|
516 | /** Constructs local view cell merge hierarchy.
|
---|
517 | */
|
---|
518 | ViewCell *ConstructLocalMergeTree(ViewCell *currentViewCell,
|
---|
519 | const ViewCellContainer &viewCells);
|
---|
520 |
|
---|
521 | /** Constructs local view cell merge hierarchy based solely on similarity with the
|
---|
522 | current viewcell
|
---|
523 | */
|
---|
524 | ViewCell *ConstructLocalMergeTree2(ViewCell *currentViewCell,
|
---|
525 | const ViewCellContainer &viewCells);
|
---|
526 |
|
---|
527 |
|
---|
528 | /** Creates clip plane for visualization.
|
---|
529 | */
|
---|
530 | void CreateClipPlane();
|
---|
531 |
|
---|
532 | virtual void UpdatePvsForEvaluation(ViewCell *root, ObjectPvs &pvs) = 0;
|
---|
533 |
|
---|
534 |
|
---|
535 |
|
---|
536 |
|
---|
537 |
|
---|
538 | /// if bounding boxes should also be exported
|
---|
539 | bool mExportBboxesForPvs;
|
---|
540 |
|
---|
541 |
|
---|
542 | Plane3 mClipPlane;
|
---|
543 |
|
---|
544 | bool mUseClipPlaneForViz;
|
---|
545 |
|
---|
546 |
|
---|
547 | /// Renders the view cells.
|
---|
548 | Renderer *mRenderer;
|
---|
549 |
|
---|
550 | /// Loaded view cells
|
---|
551 | ViewCellContainer mViewCells;
|
---|
552 |
|
---|
553 | ViewCellsTree *mViewCellsTree;
|
---|
554 |
|
---|
555 | bool mPruneEmptyViewCells;
|
---|
556 |
|
---|
557 | bool mViewCellPvsIsUpdated;
|
---|
558 | /// maximum number of samples taken for construction of the view cells
|
---|
559 | int mConstructionSamples;
|
---|
560 | int mSamplesPerPass;
|
---|
561 | int mInitialSamples;
|
---|
562 | int mPostProcessSamples;
|
---|
563 | int mVisualizationSamples;
|
---|
564 |
|
---|
565 | float mTotalAreaValid;
|
---|
566 | float mTotalArea;
|
---|
567 |
|
---|
568 | int mMaxPvsSize;
|
---|
569 | int mMinPvsSize;
|
---|
570 | float mMaxPvsRatio;
|
---|
571 |
|
---|
572 | int mSamplingType;
|
---|
573 | int mEvaluationSamplingType;
|
---|
574 | int mNumActiveViewCells;
|
---|
575 | bool mCompressViewCells;
|
---|
576 |
|
---|
577 | ViewCellsStatistics mCurrentViewCellsStats;
|
---|
578 | /// the scene bounding box
|
---|
579 | AxisAlignedBox3 mViewSpaceBox;
|
---|
580 | /// holds the view cell meshes
|
---|
581 | MeshContainer mMeshContainer;
|
---|
582 | /// if view cells should be exported
|
---|
583 | bool mExportViewCells;
|
---|
584 |
|
---|
585 | //bool mMarchTree);
|
---|
586 | bool mOnlyValidViewCells;
|
---|
587 |
|
---|
588 | /// if rays should be used to collect merge candidates
|
---|
589 | bool mUseRaysForMerge;
|
---|
590 | /// merge the view cells?
|
---|
591 | bool mMergeViewCells;
|
---|
592 |
|
---|
593 | /// the width of the box filter
|
---|
594 | float mFilterWidth;
|
---|
595 | int mMaxFilterSize;
|
---|
596 |
|
---|
597 | //-- visualization options
|
---|
598 |
|
---|
599 | /// color code for view cells
|
---|
600 | int mColorCode;
|
---|
601 | bool mExportGeometry;
|
---|
602 | bool mExportRays;
|
---|
603 |
|
---|
604 | bool mViewCellsFinished;
|
---|
605 |
|
---|
606 | bool mEvaluateViewCells;
|
---|
607 |
|
---|
608 | bool mShowVisualization;
|
---|
609 |
|
---|
610 | // HACK in order to detect empty view cells
|
---|
611 | void CollectEmptyViewCells();
|
---|
612 | void TestEmptyViewCells(const ObjectContainer &obj);
|
---|
613 |
|
---|
614 | ViewCellContainer mEmptyViewCells;
|
---|
615 |
|
---|
616 | int mRenderCostEvaluationType;
|
---|
617 |
|
---|
618 | /// if pvs should be exported with view cells
|
---|
619 | bool mExportPvs;
|
---|
620 | };
|
---|
621 |
|
---|
622 |
|
---|
623 |
|
---|
624 | /**
|
---|
625 | Manages different higher order operations on the view cells.
|
---|
626 | */
|
---|
627 | class BspViewCellsManager: public ViewCellsManager
|
---|
628 | {
|
---|
629 |
|
---|
630 | public:
|
---|
631 | /** Constructor taking the bsp tree and the number of samples
|
---|
632 | used to construct the bsp tree.
|
---|
633 | */
|
---|
634 | BspViewCellsManager(BspTree *tree);
|
---|
635 |
|
---|
636 | ~BspViewCellsManager();
|
---|
637 |
|
---|
638 | int ConstructSubdivision(const ObjectContainer &objects,
|
---|
639 | const VssRayContainer &rays);
|
---|
640 |
|
---|
641 | int PostProcess(const ObjectContainer &objects,
|
---|
642 | const VssRayContainer &rays);
|
---|
643 |
|
---|
644 | void Visualize(const ObjectContainer &objects,
|
---|
645 | const VssRayContainer &sampleRays);
|
---|
646 |
|
---|
647 | int GetType() const;
|
---|
648 |
|
---|
649 | ViewCell *GenerateViewCell(Mesh *mesh = NULL) const;
|
---|
650 |
|
---|
651 | bool ViewCellsConstructed() const;
|
---|
652 |
|
---|
653 | //void PrintStatistics(ostream &s) const;
|
---|
654 |
|
---|
655 | int CastLineSegment(const Vector3 &origin,
|
---|
656 | const Vector3 &termination,
|
---|
657 | ViewCellContainer &viewcells);
|
---|
658 |
|
---|
659 | float GetProbability(ViewCell *viewCell);
|
---|
660 |
|
---|
661 |
|
---|
662 | /** Get a viewcell containing the specified point */
|
---|
663 | ViewCell *GetViewCell(const Vector3 &point) const;
|
---|
664 |
|
---|
665 | void CreateMesh(ViewCell *vc);
|
---|
666 |
|
---|
667 | void ExportViewCellGeometry(Exporter *exporter,
|
---|
668 | ViewCell *vc,
|
---|
669 | const Plane3 *clipPlane = NULL) const;
|
---|
670 |
|
---|
671 | void CollectMergeCandidates(const VssRayContainer &rays,
|
---|
672 | vector<MergeCandidate> &candidates);
|
---|
673 |
|
---|
674 | void Finalize(ViewCell *viewCell, const bool createMesh);
|
---|
675 |
|
---|
676 | bool ExportViewCells(const string filename);
|
---|
677 |
|
---|
678 | /** Constructs merge hierarchy which corresponds to the spatial hierarchy.
|
---|
679 | */
|
---|
680 | ViewCell *ConstructSpatialMergeTree(BspNode *root);
|
---|
681 |
|
---|
682 | /** Updates the pvs in the view cells tree.
|
---|
683 | */
|
---|
684 | void UpdatePvsForEvaluation(ViewCell *root, ObjectPvs &pvs);
|
---|
685 |
|
---|
686 |
|
---|
687 | protected:
|
---|
688 |
|
---|
689 |
|
---|
690 | void CollectViewCells();
|
---|
691 |
|
---|
692 | void ExportColor(Exporter *exporter, ViewCell *vc) const;
|
---|
693 |
|
---|
694 | /// the BSP tree.
|
---|
695 | BspTree *mBspTree;
|
---|
696 |
|
---|
697 | vector<BspRay *> mBspRays;
|
---|
698 |
|
---|
699 | private:
|
---|
700 |
|
---|
701 | /** Exports visualization of the BSP splits.
|
---|
702 | */
|
---|
703 | void ExportSplits(const ObjectContainer &objects);
|
---|
704 |
|
---|
705 | /** Exports visualization of the BSP PVS.
|
---|
706 | */
|
---|
707 | void ExportBspPvs(const ObjectContainer &objects);
|
---|
708 |
|
---|
709 | void TestSubdivision();
|
---|
710 | };
|
---|
711 |
|
---|
712 | /**
|
---|
713 | Manages different higher order operations on the KD type view cells.
|
---|
714 | */
|
---|
715 | class KdViewCellsManager: public ViewCellsManager
|
---|
716 | {
|
---|
717 |
|
---|
718 | public:
|
---|
719 |
|
---|
720 | KdViewCellsManager(KdTree *tree);
|
---|
721 |
|
---|
722 | int ConstructSubdivision(const ObjectContainer &objects,
|
---|
723 | const VssRayContainer &rays);
|
---|
724 |
|
---|
725 | int CastLineSegment(const Vector3 &origin,
|
---|
726 | const Vector3 &termination,
|
---|
727 | ViewCellContainer &viewcells);
|
---|
728 |
|
---|
729 | int PostProcess(const ObjectContainer &objects,
|
---|
730 | const VssRayContainer &rays);
|
---|
731 |
|
---|
732 | void Visualize(const ObjectContainer &objects,
|
---|
733 | const VssRayContainer &sampleRays);
|
---|
734 |
|
---|
735 | int GetType() const;
|
---|
736 |
|
---|
737 | bool ViewCellsConstructed() const;
|
---|
738 |
|
---|
739 | ViewCell *GenerateViewCell(Mesh *mesh) const;
|
---|
740 |
|
---|
741 | /** Prints out statistics of this approach.
|
---|
742 | */
|
---|
743 | // virtual void PrintStatistics(ostream &s) const;
|
---|
744 | ViewCell *GetViewCell(const Vector3 &point) const { return NULL; }
|
---|
745 |
|
---|
746 | float GetProbability(ViewCell *viewCell);
|
---|
747 |
|
---|
748 |
|
---|
749 | void CreateMesh(ViewCell *vc);
|
---|
750 |
|
---|
751 | void ExportViewCellGeometry(Exporter *exporter,
|
---|
752 | ViewCell *vc,
|
---|
753 | const Plane3 *clipPlane = NULL) const;
|
---|
754 |
|
---|
755 | void CollectMergeCandidates(const VssRayContainer &rays,
|
---|
756 | vector<MergeCandidate> &candidates);
|
---|
757 |
|
---|
758 |
|
---|
759 | protected:
|
---|
760 |
|
---|
761 | virtual void UpdatePvsForEvaluation(ViewCell *root, ObjectPvs &pvs) {};
|
---|
762 | /** Collects view cells from a hierarchy.
|
---|
763 | */
|
---|
764 | void CollectViewCells();
|
---|
765 |
|
---|
766 | KdNode *GetNodeForPvs(KdLeaf *leaf);
|
---|
767 |
|
---|
768 | void ExportColor(Exporter *exporter, ViewCell *vc) const;
|
---|
769 |
|
---|
770 |
|
---|
771 | /// the BSP tree.
|
---|
772 | KdTree *mKdTree;
|
---|
773 |
|
---|
774 | /// depth of the KD tree nodes with represent the view cells
|
---|
775 | int mKdPvsDepth;
|
---|
776 | };
|
---|
777 |
|
---|
778 | /**
|
---|
779 | Manages different higher order operations on the view cells
|
---|
780 | for vsp kd tree view cells.
|
---|
781 | */
|
---|
782 | class VspKdViewCellsManager: public ViewCellsManager
|
---|
783 | {
|
---|
784 |
|
---|
785 | public:
|
---|
786 |
|
---|
787 | VspKdViewCellsManager(VspKdTree *vspKdTree);
|
---|
788 |
|
---|
789 | int ConstructSubdivision(const ObjectContainer &objects,
|
---|
790 | const VssRayContainer &rays);
|
---|
791 |
|
---|
792 |
|
---|
793 | int PostProcess(const ObjectContainer &objects,
|
---|
794 | const VssRayContainer &rays);
|
---|
795 |
|
---|
796 | void Visualize(const ObjectContainer &objects,
|
---|
797 | const VssRayContainer &sampleRays);
|
---|
798 |
|
---|
799 | int GetType() const;
|
---|
800 |
|
---|
801 | bool ViewCellsConstructed() const;
|
---|
802 |
|
---|
803 | //virtual void PrintStatistics(ostream &s) const;
|
---|
804 |
|
---|
805 | ViewCell *GenerateViewCell(Mesh *mesh) const;
|
---|
806 |
|
---|
807 |
|
---|
808 | int CastLineSegment(const Vector3 &origin,
|
---|
809 | const Vector3 &termination,
|
---|
810 | ViewCellContainer &viewcells);
|
---|
811 |
|
---|
812 | ViewCell *GetViewCell(const Vector3 &point) const { return NULL; }
|
---|
813 |
|
---|
814 | float GetProbability(ViewCell *viewCell);
|
---|
815 |
|
---|
816 |
|
---|
817 | void CreateMesh(ViewCell *vc);
|
---|
818 |
|
---|
819 | void ExportViewCellGeometry(Exporter *exporter,
|
---|
820 | ViewCell *vc,
|
---|
821 | const Plane3 *clipPlane = NULL) const;
|
---|
822 |
|
---|
823 | void CollectMergeCandidates(const VssRayContainer &rays, vector<MergeCandidate> &candidates);
|
---|
824 |
|
---|
825 | virtual void UpdatePvsForEvaluation(ViewCell *root, ObjectPvs &pvs) {};
|
---|
826 | protected:
|
---|
827 |
|
---|
828 | void ExportLeaves(const ObjectContainer &objects,
|
---|
829 | const VssRayContainer &sampleRays);
|
---|
830 |
|
---|
831 | void CollectViewCells();
|
---|
832 |
|
---|
833 | void ExportColor(Exporter *exporter, ViewCell *vc) const;
|
---|
834 |
|
---|
835 |
|
---|
836 |
|
---|
837 | /// the BSP tree.
|
---|
838 | VspKdTree *mVspKdTree;
|
---|
839 | };
|
---|
840 |
|
---|
841 |
|
---|
842 |
|
---|
843 | /**
|
---|
844 | Manages different higher order operations on the view cells.
|
---|
845 | */
|
---|
846 | class VspBspViewCellsManager: public ViewCellsManager
|
---|
847 | {
|
---|
848 |
|
---|
849 | public:
|
---|
850 |
|
---|
851 | VspBspViewCellsManager(VspBspTree *tree);
|
---|
852 | ~VspBspViewCellsManager();
|
---|
853 |
|
---|
854 | int ConstructSubdivision(const ObjectContainer &objects,
|
---|
855 | const VssRayContainer &rays);
|
---|
856 |
|
---|
857 | int PostProcess(const ObjectContainer &objects,
|
---|
858 | const VssRayContainer &rays);
|
---|
859 |
|
---|
860 | void Visualize(const ObjectContainer &objects,
|
---|
861 | const VssRayContainer &sampleRays);
|
---|
862 |
|
---|
863 | int GetType() const;
|
---|
864 |
|
---|
865 | ViewCell *GenerateViewCell(Mesh *mesh = NULL) const;
|
---|
866 |
|
---|
867 | bool ViewCellsConstructed() const;
|
---|
868 |
|
---|
869 |
|
---|
870 | int CastLineSegment(const Vector3 &origin,
|
---|
871 | const Vector3 &termination,
|
---|
872 | ViewCellContainer &viewcells);
|
---|
873 |
|
---|
874 | float GetProbability(ViewCell *viewCell);
|
---|
875 |
|
---|
876 | ViewCell *GetViewCell(const Vector3 &point) const;
|
---|
877 |
|
---|
878 | bool GetViewPoint(Vector3 &viewPoint) const;
|
---|
879 |
|
---|
880 | bool ViewPointValid(const Vector3 &viewPoint) const;
|
---|
881 |
|
---|
882 | void CreateMesh(ViewCell *vc);
|
---|
883 |
|
---|
884 | bool ExportViewCells(const string filename);
|
---|
885 |
|
---|
886 | int CastBeam(Beam &beam);
|
---|
887 |
|
---|
888 | void ExportViewCellGeometry(Exporter *exporter,
|
---|
889 | ViewCell *vc,
|
---|
890 | const Plane3 *clipPlane = NULL) const;
|
---|
891 |
|
---|
892 | //float GetVolume(ViewCell *viewCell) const;
|
---|
893 |
|
---|
894 | void Finalize(ViewCell *viewCell, const bool createMesh);
|
---|
895 |
|
---|
896 | void CollectMergeCandidates(const VssRayContainer &rays, vector<MergeCandidate> &candidates);
|
---|
897 |
|
---|
898 | /** Returns true if this view cell is equivavalent to a spatial node.
|
---|
899 | */
|
---|
900 | bool EqualToSpatialNode(ViewCell *viewCell) const;
|
---|
901 |
|
---|
902 |
|
---|
903 | protected:
|
---|
904 |
|
---|
905 | int ComputeBoxIntersections(const AxisAlignedBox3 &box, ViewCellContainer &viewCells) const;
|
---|
906 |
|
---|
907 | /** Returns node of the spatial hierarchy corresponding to the view cell
|
---|
908 | if such a node exists.
|
---|
909 | */
|
---|
910 | BspNode *GetSpatialNode(ViewCell *viewCell) const;
|
---|
911 |
|
---|
912 | /** Merges the view cells.
|
---|
913 | */
|
---|
914 | void MergeViewCells(const VssRayContainer &rays,
|
---|
915 | const ObjectContainer &objects);
|
---|
916 |
|
---|
917 | void RefineViewCells(const VssRayContainer &rays, const ObjectContainer &objects);
|
---|
918 |
|
---|
919 | void CollectViewCells();
|
---|
920 |
|
---|
921 | /** Returns maximal depth difference of view cell
|
---|
922 | leaves in tree.
|
---|
923 | */
|
---|
924 | int GetMaxTreeDiff(ViewCell *vc) const;
|
---|
925 |
|
---|
926 |
|
---|
927 | void ExportColor(Exporter *exporter, ViewCell *vc) const;
|
---|
928 |
|
---|
929 | /** Prepare view cells for use after loading them from disc.
|
---|
930 | */
|
---|
931 | void PrepareLoadedViewCells();
|
---|
932 |
|
---|
933 | /** Constructs merge hierarchy which corresponds to the spatial hierarchy.
|
---|
934 | */
|
---|
935 | ViewCell *ConstructSpatialMergeTree(BspNode *root);
|
---|
936 |
|
---|
937 | void UpdatePvsForEvaluation(ViewCell *root, ObjectPvs &pvs);
|
---|
938 |
|
---|
939 |
|
---|
940 | // HACK
|
---|
941 | void TestFilter(const ObjectContainer &objects);
|
---|
942 |
|
---|
943 |
|
---|
944 |
|
---|
945 | /// the view space partition BSP tree.
|
---|
946 | VspBspTree *mVspBspTree;
|
---|
947 |
|
---|
948 |
|
---|
949 | private:
|
---|
950 |
|
---|
951 | /** Exports visualization of the BSP splits.
|
---|
952 | */
|
---|
953 | void ExportSplits(const ObjectContainer &objects,
|
---|
954 | const VssRayContainer &rays);
|
---|
955 |
|
---|
956 | /** Exports visualization of the BSP PVS.
|
---|
957 | */
|
---|
958 | void ExportBspPvs(const ObjectContainer &objects,
|
---|
959 | const VssRayContainer &rays);
|
---|
960 |
|
---|
961 | void TestSubdivision();
|
---|
962 | };
|
---|
963 |
|
---|
964 |
|
---|
965 | class ViewCellsManagerFactory
|
---|
966 | {
|
---|
967 |
|
---|
968 | public:
|
---|
969 |
|
---|
970 | ViewCellsManager *Create(const string mName);
|
---|
971 |
|
---|
972 | };
|
---|
973 |
|
---|
974 | #endif
|
---|