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 "SimpleRay.h"
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6 | #include "VssRay.h"
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7 | #include "Containers.h"
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8 | #include "ViewCell.h"
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9 |
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10 | #define TEST_PACKETS 0
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11 |
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12 | namespace GtpVisibilityPreprocessor {
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13 |
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14 | class ViewCell;
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15 | class Intersectable;
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16 | class RenderSimulator;
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17 | class Renderer;
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18 | class Mesh;
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19 | struct Triangle3;
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20 | class SimulationStatistics;
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21 | class BspTree;
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22 | class KdTree;
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23 | class VspOspTree;
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24 | class VspBspTree;
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25 | class KdNode;
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26 | class KdLeaf;
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27 | class AxisAlignedBox3;
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28 | class BspLeaf;
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29 | class ViewCellsStatistics;
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30 | class Exporter;
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31 | class Beam;
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32 | class Preprocessor;
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33 | class ViewCellsTree;
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34 | class MergeCandidate;
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35 | class BoundingBoxConverter;
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36 | class VspTree;
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37 | class OspTree;
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38 | class VspNode;
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39 | class HierarchyManager;
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40 | class BvHierarchy;
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41 | class ViewCellsTree;
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42 | class ViewCell;
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43 | class MixtureDistribution;
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44 | struct AxisAlignedPlane;
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45 | struct BspRay;
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46 | class BspTree;
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47 |
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48 |
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49 |
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50 | struct PvsFilterStatistics
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51 | {
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52 | PvsFilterStatistics():
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53 | mAvgFilterRadius(0.0f), mLocalFilterCount(0), mGlobalFilterCount(0) {}
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54 |
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55 | float mAvgFilterRadius;
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56 | int mLocalFilterCount;
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57 | int mGlobalFilterCount;
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58 | };
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59 |
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60 | /** Probably Visible Set
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61 | */
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62 | class PrVs
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63 | {
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64 | public:
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65 | /// root of view cells tree
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66 | ViewCell *mViewCell;
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67 | // input parameter is the render budget for the PrVs
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68 | float mRenderBudget;
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69 | };
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70 |
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71 |
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72 | class LocalMergeNode
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73 | {
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74 | public:
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75 | virtual ~LocalMergeNode() {};
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76 | virtual bool IsLeaf() const = 0;
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77 | };
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78 |
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79 | typedef pair<ViewCell *, SimpleRayContainer> ViewCellPoints;
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80 |
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81 | struct VizBuffer
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82 | {
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83 | VizBuffer(): mIndex(0), mMaxSize(10000)
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84 | {
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85 | }
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86 |
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87 | int GetSize() const {return (int)mVizRays.size();}
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88 |
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89 | void AddRay(VssRay *ray)
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90 | {
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91 | if (mVizRays.size() < mMaxSize)
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92 | mVizRays.push_back(ray);
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93 | else
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94 | mVizRays[mIndex] = ray;
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95 |
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96 | mIndex = (mIndex + 1) % mMaxSize;
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97 | }
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98 |
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99 | VssRayContainer &GetRays() { return mVizRays;}
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100 |
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101 | VssRay *GetRay(int i) { return mVizRays[i % 100];}
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102 |
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103 | protected:
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104 |
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105 | const int mMaxSize;
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106 | int mIndex;
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107 | VssRayContainer mVizRays;
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108 | };
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109 |
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110 |
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111 | /** Manages different higher order operations on the view cells.
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112 | */
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113 | class ViewCellsManager
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114 | {
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115 | public:
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116 |
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117 | struct PerViewCellStat
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118 | {
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119 | float pvsSize;
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120 | float relPvsIncrease;
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121 | };
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122 |
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123 | struct SamplesStatistics
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124 | {
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125 | int mRays;
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126 | int mViewCells;
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127 | int mContributingRays;
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128 | int mPvsContributions;
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129 | void Reset()
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130 | {
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131 | mRays = 0;
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132 | mViewCells = 0;
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133 | mContributingRays = 0;
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134 | mPvsContributions = 0;
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135 | };
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136 | };
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137 |
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138 | struct PvsStatistics
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139 | {
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140 | float minPvs;
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141 | float maxPvs;
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142 | float avgPvs;
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143 | float renderCost;
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144 | float avgPvsEntries;
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145 |
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146 | float avgFilteredPvs;
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147 | float avgFilteredPvsEntries;
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148 |
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149 | float avgFilterContribution;
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150 | float avgFilterRadius;
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151 | float avgFilterRatio;
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152 | float avgRelPvsIncrease;
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153 | float devRelPvsIncrease;
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154 | int viewcells;
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155 |
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156 | float mem;
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157 | float renderCostRatio;
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158 | };
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159 |
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160 | /// view cell container types
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161 | enum {BSP, KD, VSP_KD, VSP_BSP, VSP_OSP};
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162 |
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163 | /// render cost evaluation type
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164 | enum {PER_OBJECT, PER_TRIANGLE};
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165 |
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166 | friend class X3dViewCellsParseHandlers;
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167 |
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168 | /** Default constructor.
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169 | */
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170 | ViewCellsManager(ViewCellsTree *viewCellsTree);
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171 | /** Destructor.
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172 | */
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173 | virtual ~ViewCellsManager();
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174 | /** Constructs view cells container taking a preprocessor
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175 | @returns the output rays (if not null)
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176 | */
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177 | int Construct(Preprocessor *preprocessor, VssRayContainer *outRays = NULL);
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178 |
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179 | /** Constructs view cell container with a given number of samples.
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180 | */
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181 | virtual int ConstructSubdivision(const ObjectContainer &objects,
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182 | const VssRayContainer &rays) = 0;
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183 |
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184 | /** Computes sample contributions of the rays to the view cells PVS.
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185 |
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186 | @param rays bundle of rays used to find intersections with view cells and
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187 | adding the contribution
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188 | @param addRays true if rays should be added to the PVSs of the viewcells they
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189 | intersect
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190 | @param storeViewCells true if view cells should be stored in the ray
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191 | */
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192 | virtual float ComputeSampleContributions(const VssRayContainer &rays,
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193 | const bool addContributions,
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194 | const bool storeViewCells,
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195 | const bool useHitObject = false);
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196 |
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197 | /** Computes sample contribution of a simgle ray to the view cells PVS.
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198 | @param ray finds intersections with view cells and holds the contribution
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199 | @param addSample if sample should be added to the pvs
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200 |
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201 | @returns number of sample contributions
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202 | */
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203 | virtual float ComputeSampleContribution(VssRay &ray,
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204 | const bool addContributions,
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205 | const bool storeViewCells,
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206 | const bool useHitObject = false);
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207 | /** Compute sample contribution only for current view cell.
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208 | */
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209 | virtual float ComputeSampleContribution(VssRay &ray,
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210 | const bool addContributions,
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211 | ViewCell *currentViewCell,
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212 | const bool useHitObject = false);
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213 | /** Prints out statistics of the view cells.
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214 | */
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215 | virtual void PrintStatistics(std::ostream &s) const;
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216 | /** Post processes view cells givemŽa number of rays.
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217 | */
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218 | virtual int PostProcess(const ObjectContainer &objects,
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219 | const VssRayContainer &rays) = 0;
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220 | /** Show visualization of the view cells.
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221 | */
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222 | virtual void Visualize(const ObjectContainer &objects,
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223 | const VssRayContainer &sampleRays) = 0;
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224 | /** collect objects intersecting a given spatial box.
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225 | */
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226 | virtual void CollectObjects(const AxisAlignedBox3 &box, ObjectContainer &objects);
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227 | /** type of the view cell container.
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228 | */
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229 | virtual int GetType() const = 0;
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230 | /** Load the input viewcells. The input viewcells should be given as a collection
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231 | of meshes. Each mesh is assume to form a bounded polyhedron
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232 | defining the interior of the viewcell. The view cells manager
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233 | is responsible for building a hierarchy over these view cells.
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234 |
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235 | @param filename file to load
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236 | @return true on success
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237 | */
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238 | virtual bool LoadViewCellsGeometry(const string filename, const bool extrudeBaseTriangle);
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239 | /** Merges two view cells.
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240 | @note the piercing rays of the front and back will be ordered
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241 | @returns new view cell based on the merging.
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242 | */
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243 | ViewCellInterior *MergeViewCells(ViewCell *front, ViewCell *back) const;
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244 | /** Merges a container of view cells.
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245 | @returns new view cell based on the merging.
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246 | */
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247 | ViewCellInterior *MergeViewCells(ViewCellContainer &children) const;
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248 | /** Generates view cell of the type specified by this manager
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249 | */
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250 | virtual ViewCell *GenerateViewCell(Mesh *mesh = NULL) const = 0;
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251 | /** Constructs view cell from base triangle.
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252 | The view cell is extruded along the normal vector.
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253 | @param the base triangle
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254 | @param the height of the newly created view cell
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255 | */
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256 | ViewCell *ExtrudeViewCell(const Triangle3 &baseTri, const float height) const;
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257 | /** Returns the intersectable that was hit by the ray.
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258 | */
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259 | virtual Intersectable *GetIntersectable(const VssRay &ray, const bool isTermination) const;
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260 | /** Sets maximal number of samples used for the
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261 | construction of the view cells.
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262 | */
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263 | void SetVisualizationSamples(const int visSamples);
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264 | /** Sets maximal number of samples used for the construction of the view cells.
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265 | */
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266 | void SetConstructionSamples(const int constructionSamples);
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267 | /** Sets maximal number of samples used for the visualization of the view cells.
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268 | */
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269 | void SetInitialSamples(const int initialSamples);
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270 | /** Sets maximal number of samples used for the post processing of the view cells.
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271 | */
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272 | void SetPostProcessSamples(const int postProcessingSamples);
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273 | /** See set.
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274 | */
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275 | int GetVisualizationSamples() const;
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276 | /** See set.
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277 | */
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278 | int GetConstructionSamples() const;
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279 | /** See set.
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280 | */
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281 | int GetPostProcessSamples() const;
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282 | /** Returns true if view cells are already constructed.
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283 | */
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284 | virtual bool ViewCellsConstructed() const = 0;
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285 | /** cast line segment to get a list of unique viewcells which are intersected
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286 | by this line segment
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287 | */
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288 | virtual int CastLineSegment(const Vector3 &origin,
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289 | const Vector3 &termination,
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290 | ViewCellContainer &viewcells) = 0;
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291 | /** Tests if this line segment intersects a particular view cell.
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292 | */
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293 | virtual bool LineSegmentIntersects(const Vector3 &origin,
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294 | const Vector3 &termination,
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295 | ViewCell *viewCell) = 0;
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296 | /** Returns a stats about the global pvs.
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297 | */
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298 | virtual void GetPvsStatistics(PvsStatistics &stat);
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299 | /** Returns the probably visible set of the view space filtered pvs.
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300 | */
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301 | virtual void GetPrVS(const Vector3 &viewPoint, PrVs &prvs, const float filterWidth);
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302 | /** Get a viewcell containing the specified view point.
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303 | @param active if the active or elementary view cell should be returned.
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304 | */
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305 | virtual ViewCell *GetViewCell(const Vector3 &point, const bool active = false) const = 0;
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306 | /** Returns the view cell with the given index (different from the id).
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307 | */
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308 | ViewCell *GetViewCell(const int idx) const {return mViewCells[idx];}
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309 | /** Prints the statistics over the view cell pvss.
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310 | */
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311 | virtual void PrintPvsStatistics(std::ostream &s);
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312 | /** Updates pvs of the view cell hierarchy if necessary.
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313 | */
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314 | void UpdatePvs();
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315 | /** Returns probability that view point lies in one view cell.
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316 | */
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317 | virtual float GetProbability(ViewCell *viewCell) = 0;
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318 | /** Returns render cost of a single view cell given the render cost of an object.
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319 | */
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320 | float GetRendercost(ViewCell *viewCell) const;
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321 | /** Returns reference to container of loaded / generated view cells.
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322 | */
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323 | ViewCellContainer &GetViewCells();
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324 | /** Helper function used to split ray sets uniformly
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325 | into one that is currently used and the other that
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326 | is saved for later processing.
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327 | @param sourceRays the input ray set
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328 | @param maxSize the maximal number of rays that will be used
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329 | @param usedRays returns the used ray set
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330 | @param savedRays if not null, returns the saved ray set
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331 | */
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332 | void GetRaySets(const VssRayContainer &sourceRays,
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333 | const int maxSize,
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334 | VssRayContainer &usedRays,
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335 | VssRayContainer *savedRays = NULL) const;
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336 | /** Returns accumulated area of all view cells.
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337 | */
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338 | float GetAccVcArea();
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339 | /** Returns area of one view cell.
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340 | */
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341 | virtual float GetArea(ViewCell *viewCell) const;
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342 | /** Returns volume of view cell.
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343 | */
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344 | virtual float GetVolume(ViewCell *viewCell) const;
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345 | /** Sets the current renderer mainly for view cells statistics.
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346 | */
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347 | void SetRenderer(Renderer *renderer);
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348 | /** Computes a (random) view point in the valid view space.
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349 | @returns true if valid view point was found
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350 | */
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351 | virtual bool GetViewPoint(Vector3 &viewPoint) const;
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352 | /** Returns the current view point given a vector for activating the halton sequence.
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353 | */
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354 | virtual bool GetViewPoint(Vector3 &viewPoint, const Vector3 ¶ms) const;
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355 | /** Returns true if this view point is in the valid view space.
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356 | */
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357 | virtual bool ViewPointValid(const Vector3 &viewPoint) const;
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358 | /** Sets a view space boundary.
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359 | */
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360 | void SetViewSpaceBox(const AxisAlignedBox3 &box);
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361 | /** Returns the boundaries of the view space.
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362 | */
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363 | AxisAlignedBox3 GetViewSpaceBox() const;
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364 | /** Creates mesh for this view cell.
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365 | */
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366 | virtual void CreateMesh(ViewCell *vc) = 0;
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367 | /** Writes view cells to disc.
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368 | */
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369 | virtual bool ExportViewCells(const string filename,
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370 | const bool exportPvs,
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371 | const ObjectContainer &objects);
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372 | /** Casts beam to collect view cells.
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373 | */
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374 | virtual int CastBeam(Beam &beam);
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375 | /** Checks if view cell is considered as valid.
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376 | */
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377 | virtual bool CheckValidity(ViewCell *vc,
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378 | int minPvsSize,
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379 | int maxPvsSize) const;
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380 | /** Resort pvss after a pass of the algorithm.
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381 | */
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382 | void SortViewCellPvs();
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383 | /** Map the ray intersection objects from triangles to high level objects.
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384 | */
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385 | void DeterminePvsObjects(VssRayContainer &rays,
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386 | const bool useHitObjects = false);
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387 | /** Sets validity of view cell
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388 | */
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389 | virtual void SetValidity(ViewCell *vc,
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390 | int minPvsSize,
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391 | int maxPvsSize) const;
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392 | /** sets validy of all viewcells
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393 | */
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394 | virtual void SetValidity(int minPvsSize, int maxPvsSize) const;
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395 | /** Set valid viewcells in the range of pvs. sorts the viewcells
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396 | according to the pvs and then pickups those in the ranges
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397 | */
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398 | void SetValidityPercentage(const float minValid, const float maxValid);
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399 | /** Returns number of valid view cells.
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400 | */
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401 | int CountValidViewcells() const;
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402 | /** Returns maximal allowed pvs size.
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403 | */
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404 | int GetMaxPvsSize() const;
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405 | /** Returns maximal allowed pvs size.
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406 | */
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407 | int GetMinPvsSize() const;
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408 | /** Returns maximal ratio. i.e., currentPVs / maxPvs,
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409 | where pvs is still considered valid.
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410 | */
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411 | float GetMaxPvsRatio() const;
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412 | /** Exports view cell geometry.
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413 | */
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414 | virtual void ExportViewCellGeometry(Exporter *exporter,
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415 | ViewCell *vc,
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416 | const AxisAlignedBox3 *box,
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417 | const AxisAlignedPlane *clipPlane = NULL
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418 | ) const = 0;
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419 | /** Brings the view cells into their final state, computes meshes and volume.
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420 | */
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421 | virtual void FinalizeViewCells(const bool createMesh);
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422 | /** Evaluates statistics values on view cells.
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423 | */
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424 | void EvaluateRenderStatistics(float &totalRenderCost,
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425 | float &expectedRenderCost,
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426 | float &deviation,
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427 | float &variance,
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428 | float &totalPvs,
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429 | float &avgRenderCost);
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430 | /** Returns hierarchy of the view cells.
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431 | */
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432 | ViewCellsTree *GetViewCellsTree();
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433 | /** Collect candidates for the view cell merge.
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434 | */
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435 | virtual void CollectMergeCandidates(const VssRayContainer &rays,
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436 | vector<MergeCandidate> &candidates);
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437 | /** Collects n view cells and stores it as the active view cells.
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438 | */
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439 | void CollectViewCells(const int n);
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440 | /** Sets current view cells set to active,
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441 | i.e., the sampling is done in this view cell set.
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442 | */
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443 | void SetViewCellsActive();
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444 | /** Evaluates render cost statistics of current view cell hierarchy.
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445 | */
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446 | virtual void EvalViewCellPartition();
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447 | /** Sets maximal size of a view cell filter.
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448 | */
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449 | void SetMaxFilterSize(const int size);
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450 | /** Returns maximal filter size.
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451 | */
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452 | int GetMaxFilterSize() const;
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453 | /** Deletes interior nodes from the tree which have negative
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454 | merge cost set (local merge).
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455 | */
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456 | void DeleteLocalMergeTree(ViewCell *vc) const;
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457 | /** Evaluautes histogram for a given number of view cells.
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458 | */
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459 | void EvalViewCellHistogram(const string filename, const int nViewCells);
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460 | /** Evaluautes histogram for a given number of view cells.
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461 | */
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462 | void EvalViewCellHistogramForPvsSize(const string filename,
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463 | const int nViewCells);
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464 | /** Evaluautes histogram for a given vector of view cells.
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465 | */
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466 | void EvalViewCellHistogramForPvsSize(const string filename,
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467 | ViewCellContainer &viewCells);
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468 | float ComputeRenderCost(const int tri, const int obj); //const
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469 | /** Sets pvs size of a view cell as a scalar. Used when storing pvs only in the leaves
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470 | of the hierarchy.
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471 | */
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472 | void UpdateScalarPvsSize(ViewCell *vc,
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473 | const float pvsCost,
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474 | const int entriesInPvs) const;
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475 | /** Sets render cost of a view cell as a scalar.
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476 | */
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477 | void UpdateScalarPvsCost(ViewCell *vc, const float pvsCost) const;
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478 |
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479 | /** Returns bounding box of a view cell.
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480 | */
|
---|
481 | AxisAlignedBox3 GetViewCellBox(ViewCell *vc);
|
---|
482 | /** Exports bounding boxes of objects to file.
|
---|
483 | */
|
---|
484 | bool ExportBoundingBoxes(const string filename,
|
---|
485 | const ObjectContainer &objects) const;
|
---|
486 | /** Load the bounding boxes into the container.
|
---|
487 | */
|
---|
488 | bool LoadBoundingBoxes(const string filename,
|
---|
489 | IndexedBoundingBoxContainer &boxes) const;
|
---|
490 | /** Returns true if pvs should be exported together with the view cells.
|
---|
491 | */
|
---|
492 | bool GetExportPvs() const;
|
---|
493 | /** Efficiently merges the view cells in the container.
|
---|
494 | */
|
---|
495 | void MergeViewCellsRecursivly(ObjectPvs &pvs,
|
---|
496 | const ViewCellContainer &viewCells) const;
|
---|
497 | /** Compresses the view cells.
|
---|
498 | */
|
---|
499 | virtual void CompressViewCells();
|
---|
500 | /** Returns view cell with the given id.
|
---|
501 | */
|
---|
502 | ViewCell *GetViewCellById(const int id);
|
---|
503 | /** Returns number of view cells.
|
---|
504 | */
|
---|
505 | int GetNumViewCells() const;
|
---|
506 |
|
---|
507 | bool GenerateRandomViewCells(ViewCellContainer &viewCells,
|
---|
508 | const int numViewCells);
|
---|
509 |
|
---|
510 | bool GenerateRandomViewCells(vector<ViewCellPoints *> &viewCells,
|
---|
511 | const int nViewCells,
|
---|
512 | const int nViewPoints);
|
---|
513 |
|
---|
514 |
|
---|
515 | bool GenerateViewPoints(ViewCell *viewCell,
|
---|
516 | const int numViewPoints,
|
---|
517 | SimpleRayContainer &viewPoints);
|
---|
518 |
|
---|
519 | bool ImportRandomViewCells(const string &filename,
|
---|
520 | vector<ViewCellPoints *> &viewCells);
|
---|
521 |
|
---|
522 | bool ImportRandomViewCells(const string &filename);
|
---|
523 |
|
---|
524 | bool ExportRandomViewCells(const string &filename,
|
---|
525 | const vector<ViewCellPoints *> &viewCells);
|
---|
526 |
|
---|
527 | bool ExportRandomViewCells(const string &filename);
|
---|
528 |
|
---|
529 | bool GenerateViewPoint(ViewCell *viewCell, SimpleRay &ray);
|
---|
530 |
|
---|
531 | bool IsValidViewSpace(ViewCell *vc);
|
---|
532 |
|
---|
533 |
|
---|
534 | //////////////
|
---|
535 | // static members
|
---|
536 |
|
---|
537 | /** Loads view cells from file. The view cells manager is created with
|
---|
538 | respect to the loaded view cells.
|
---|
539 |
|
---|
540 | @param filename the filename of the view cells
|
---|
541 | @param objects the scene objects
|
---|
542 | @param finalizeViewCells if the view cells should be post processed, i.e.,
|
---|
543 | a mesh is created representing the geometry
|
---|
544 | @param bconverter a conversion routine working with the similarities of bounding
|
---|
545 | boxes: if there is a certain similarity of overlap between
|
---|
546 | bounding boxes, two tested candidate objects are considered
|
---|
547 | to be the same objects
|
---|
548 | @returns the view cells manager if loading was successful, false otherwise
|
---|
549 | */
|
---|
550 | static ViewCellsManager *LoadViewCells(const string &filename,
|
---|
551 | ObjectContainer &pvsObjects,
|
---|
552 | ObjectContainer &preprocessorObjects,
|
---|
553 | bool finalizeViewCells = false,
|
---|
554 | BoundingBoxConverter *bconverter = NULL);
|
---|
555 |
|
---|
556 | /** Convenience function assuming that there are no preprocessor objects.
|
---|
557 | */
|
---|
558 | static ViewCellsManager *LoadViewCells(const string &filename,
|
---|
559 | ObjectContainer &pvsObjects,
|
---|
560 | bool finalizeViewCells = false,
|
---|
561 | BoundingBoxConverter *bconverter = NULL);
|
---|
562 |
|
---|
563 |
|
---|
564 | ///////////////////////
|
---|
565 | //-- visiblity filter options
|
---|
566 |
|
---|
567 | // TODO: write own visibiltiy filter class
|
---|
568 | void ApplyFilter(KdTree *kdTree,
|
---|
569 | const float viewSpaceFilterSize,
|
---|
570 | const float spatialFilterSize);
|
---|
571 |
|
---|
572 | // new adaptive version of the filter
|
---|
573 | PvsFilterStatistics ApplyFilter2(ViewCell *viewCell,
|
---|
574 | const bool useViewSpaceFilter,
|
---|
575 | const float filterSize,
|
---|
576 | ObjectPvs &pvs,
|
---|
577 | vector<AxisAlignedBox3> *filteredBoxes = NULL,
|
---|
578 | const bool onlyNewObjects = false);
|
---|
579 |
|
---|
580 | void ApplySpatialFilter(KdTree *kdTree,
|
---|
581 | const float spatialFilterSize,
|
---|
582 | ObjectPvs &pvs);
|
---|
583 |
|
---|
584 | void ApplyFilter(ViewCell *viewCell,
|
---|
585 | KdTree *kdTree,
|
---|
586 | const float viewSpaceFilterSize,
|
---|
587 | const float spatialFilterSize,
|
---|
588 | ObjectPvs &pvs);
|
---|
589 |
|
---|
590 | float GetFilterWidth();
|
---|
591 |
|
---|
592 | float GetAbsFilterWidth();
|
---|
593 | /** Returns the bounding box of filter width.
|
---|
594 | */
|
---|
595 | AxisAlignedBox3 GetFilterBBox(const Vector3 &viewPoint,
|
---|
596 | const float width) const;
|
---|
597 |
|
---|
598 |
|
---|
599 |
|
---|
600 | //////////////////////////////////////////////////////////////////
|
---|
601 |
|
---|
602 |
|
---|
603 | /** If true, the kd nodes are stored instead of the object pvs.
|
---|
604 | */
|
---|
605 | void SetStoreKdPvs(const bool storeKdPvs);
|
---|
606 |
|
---|
607 | /** Returns true if the kd nodes are stored instead of the object pvs.
|
---|
608 | **/
|
---|
609 | bool GetStoreKdPVs() const;
|
---|
610 |
|
---|
611 | /** Exports single view cells for visualization.
|
---|
612 | @param objects the scene objects
|
---|
613 | @param limit the maximal number of output view cells
|
---|
614 | @param sortViewCells if the view cells should be sorted by pvs size
|
---|
615 | @param exportPvs if the pvs should also be exported
|
---|
616 | @param exportRays if sample rays should be exported as well
|
---|
617 | @param maxRays maximum number of rays to export
|
---|
618 | @param prefix the prefix for the output file
|
---|
619 | @param visRays additional rays
|
---|
620 | */
|
---|
621 | virtual void ExportSingleViewCells(const ObjectContainer &objects,
|
---|
622 | const int maxViewCells,
|
---|
623 | const bool sortViewCells,
|
---|
624 | const bool exportPvs,
|
---|
625 | const bool exportRays,
|
---|
626 | const int maxRays,
|
---|
627 | const string &prefix,
|
---|
628 | VssRayContainer *visRays = NULL) = 0;
|
---|
629 |
|
---|
630 |
|
---|
631 | void ResetPvs();
|
---|
632 |
|
---|
633 | Preprocessor *GetPreprocessor() const
|
---|
634 | {
|
---|
635 | return mPreprocessor;
|
---|
636 | }
|
---|
637 |
|
---|
638 | void SetPreprocessor(Preprocessor *p)
|
---|
639 | {
|
---|
640 | mPreprocessor = p;
|
---|
641 | }
|
---|
642 |
|
---|
643 | vector<ViewCellPoints *> *GetViewCellPoints()
|
---|
644 | {
|
---|
645 | return &mViewCellPoints;
|
---|
646 | }
|
---|
647 |
|
---|
648 | void UpdatePvsForEvaluation();
|
---|
649 |
|
---|
650 |
|
---|
651 | VizBuffer mVizBuffer;
|
---|
652 |
|
---|
653 |
|
---|
654 | protected:
|
---|
655 |
|
---|
656 | void ComputeViewCellContribution(ViewCell *viewCell,
|
---|
657 | VssRay &ray,
|
---|
658 | Intersectable *obj,
|
---|
659 | const Vector3 &pt,
|
---|
660 | const bool addRays);
|
---|
661 |
|
---|
662 | void MergeViewCellsRecursivly(ObjectPvs &pvs,
|
---|
663 | const ViewCellContainer &viewCells,
|
---|
664 | const int leftIdx,
|
---|
665 | const int rightIdx) const;
|
---|
666 | /** Intersects box with the tree and returns the number of intersected boxes.
|
---|
667 | @returns number of view cells found
|
---|
668 | */
|
---|
669 | virtual int ComputeBoxIntersections(const AxisAlignedBox3 &box,
|
---|
670 | ViewCellContainer &viewCells) const;
|
---|
671 | /** Tests the visibility filter functionality.
|
---|
672 | */
|
---|
673 | virtual void TestFilter(const ObjectContainer &objects) {};
|
---|
674 | /** If the view cells tree was already constructed or not.
|
---|
675 | */
|
---|
676 | bool ViewCellsTreeConstructed() const;
|
---|
677 | /** Requests preprocessor to cast samplesPerPass samples of a specific type.
|
---|
678 | */
|
---|
679 | int CastPassSamples(const int samplesPerPass,
|
---|
680 | const vector<int> &strategies,
|
---|
681 | VssRayContainer &vssRays) const;
|
---|
682 | /** cast samples for the purpose of evaluating the view cells solution
|
---|
683 | */
|
---|
684 | int CastEvaluationSamples(const int samplesPerPass,
|
---|
685 | VssRayContainer &passSamples);// const;
|
---|
686 | /** Parse the options from the environment file.
|
---|
687 | */
|
---|
688 | void ParseEnvironment();
|
---|
689 | /** Creates unique view cell ids.
|
---|
690 | */
|
---|
691 | void CreateUniqueViewCellIds();
|
---|
692 | /** Finalizes, i.e., creates mesh, volume, area etc. for the view cell.
|
---|
693 | */
|
---|
694 | virtual void Finalize(ViewCell *viewCell, const bool createMesh);
|
---|
695 | /** Recollects view cells and resets statistics.
|
---|
696 | */
|
---|
697 | void ResetViewCells();
|
---|
698 | /** Sets this view cell to active.
|
---|
699 | */
|
---|
700 | void SetViewCellActive(ViewCell *vc) const;
|
---|
701 | /** Collects the view cells in the view cell container.
|
---|
702 | */
|
---|
703 | virtual void CollectViewCells() = 0;
|
---|
704 | /** Evaluates view cells statistics and stores it in mViewCellsStatistics.
|
---|
705 | */
|
---|
706 | void EvaluateViewCellsStats();
|
---|
707 |
|
---|
708 |
|
---|
709 | void UpdateStatsForViewCell(ViewCell *viewCell, Intersectable *obj);
|
---|
710 |
|
---|
711 |
|
---|
712 | ///////////////////////
|
---|
713 | //-- helper functions for view cell visualization
|
---|
714 |
|
---|
715 | /** Exports the view cell partition.
|
---|
716 | */
|
---|
717 | void ExportViewCellsForViz(Exporter *exporter,
|
---|
718 | const AxisAlignedBox3 *box,
|
---|
719 | const bool colorCode,
|
---|
720 | const AxisAlignedPlane *clipPlane) const;
|
---|
721 | /** Sets exporter color.
|
---|
722 | */
|
---|
723 | virtual void ExportColor(Exporter *exporter,
|
---|
724 | ViewCell *vc,
|
---|
725 | const int colorCode) const;
|
---|
726 | /** Creates meshes from the view cells.
|
---|
727 | */
|
---|
728 | void CreateViewCellMeshes();
|
---|
729 | /** Creates clip plane for visualization.
|
---|
730 | */
|
---|
731 | void CreateClipPlane();
|
---|
732 |
|
---|
733 | AxisAlignedPlane *GetClipPlane();
|
---|
734 |
|
---|
735 | void ExportMergedViewCells(const ObjectContainer &objects);
|
---|
736 |
|
---|
737 |
|
---|
738 | ///////////////////////
|
---|
739 |
|
---|
740 | /** Returns volume of the view space.
|
---|
741 | */
|
---|
742 | virtual float GetViewSpaceVolume();
|
---|
743 | /** Prepares the view cells for sampling after loading them from disc.
|
---|
744 | */
|
---|
745 | virtual void PrepareLoadedViewCells() {};
|
---|
746 | /** Constructs local view cell merge hierarchy.
|
---|
747 | */
|
---|
748 | ViewCell *ConstructLocalMergeTree(ViewCell *currentViewCell,
|
---|
749 | const ViewCellContainer &viewCells);
|
---|
750 | /** Constructs local view cell merge hierarchy based solely on similarity with the
|
---|
751 | current viewcell
|
---|
752 | */
|
---|
753 | ViewCell *ConstructLocalMergeTree2(ViewCell *currentViewCell,
|
---|
754 | const ViewCellContainer &viewCells);
|
---|
755 | /** Updates pvs of all view cells for statistical evaluation after some more sampling
|
---|
756 | */
|
---|
757 | void UpdatePvsForEvaluation(ViewCell *root, ObjectPvs &pvs);
|
---|
758 | /** Export statistics of the view cells tree.
|
---|
759 | */
|
---|
760 | virtual void ExportStats(const string &mergeStats);
|
---|
761 | /** Loads view cells in binary mode.
|
---|
762 | */
|
---|
763 | static ViewCellsManager *LoadViewCellsBinary(const string &filename,
|
---|
764 | ObjectContainer &pvsObjects,
|
---|
765 | bool finalizeViewCells,
|
---|
766 | BoundingBoxConverter *bconverter);
|
---|
767 | /** This helper function loads the bounding boxes for a binary solution.
|
---|
768 | */
|
---|
769 | static void LoadIndexedBoundingBoxesBinary(IN_STREAM &stream,
|
---|
770 | IndexedBoundingBoxContainer &iboxes);
|
---|
771 |
|
---|
772 |
|
---|
773 |
|
---|
774 | ///////////
|
---|
775 | //-- members
|
---|
776 |
|
---|
777 | ofstream mStats;
|
---|
778 | Preprocessor *mPreprocessor;
|
---|
779 | /// if bounding boxes should be exported together with the view cells
|
---|
780 | bool mExportBboxesForPvs;
|
---|
781 | /// the clip plane for visualization
|
---|
782 | AxisAlignedPlane mClipPlaneForViz;
|
---|
783 | /// if the visualization is using the clip plane
|
---|
784 | bool mUseClipPlaneForViz;
|
---|
785 | /// Renders the view cells.
|
---|
786 | Renderer *mRenderer;
|
---|
787 | /// Loaded view cells
|
---|
788 | ViewCellContainer mViewCells;
|
---|
789 | /// the view cell hierarchy (i.e., the logical description of view cells)
|
---|
790 | ViewCellsTree *mViewCellsTree;
|
---|
791 |
|
---|
792 | std::vector<int> mStrategies;
|
---|
793 |
|
---|
794 | /** if the values in the view cell leaves and the interiors are up to date
|
---|
795 | this is meant for lazy storing of the pvs, where only a scalar indicating
|
---|
796 | pvs size is stored in interiors and not the pvs itself.
|
---|
797 | */
|
---|
798 | bool mViewCellPvsIsUpdated;
|
---|
799 |
|
---|
800 | /// maximum number of samples for the view cell construction
|
---|
801 | int mConstructionSamples;
|
---|
802 | int mSamplesPerPass;
|
---|
803 | int mInitialSamples;
|
---|
804 | int mPostProcessSamples;
|
---|
805 | int mVisualizationSamples;
|
---|
806 |
|
---|
807 | int mEvaluationSamples;
|
---|
808 |
|
---|
809 | float mTotalAreaValid;
|
---|
810 | float mTotalArea;
|
---|
811 |
|
---|
812 | int mMaxPvsSize;
|
---|
813 | int mMinPvsSize;
|
---|
814 | float mMaxPvsRatio;
|
---|
815 |
|
---|
816 | int mSamplingType;
|
---|
817 | int mEvaluationSamplingType;
|
---|
818 | int mNumActiveViewCells;
|
---|
819 | bool mCompressViewCells;
|
---|
820 |
|
---|
821 | vector<ViewCellPoints *> mViewCellPoints;
|
---|
822 |
|
---|
823 | /// holds the current view cell statistics
|
---|
824 | ViewCellsStatistics mCurrentViewCellsStats;
|
---|
825 |
|
---|
826 | /// the scene bounding box
|
---|
827 | AxisAlignedBox3 mViewSpaceBox;
|
---|
828 |
|
---|
829 | /// if view cells should be exported
|
---|
830 | bool mExportViewCells;
|
---|
831 | // if only valid view cells should be considered for processing
|
---|
832 | bool mOnlyValidViewCells;
|
---|
833 | /// if rays should be used to collect merge candidates
|
---|
834 | bool mUseRaysForMerge;
|
---|
835 | /// if there should be an additional merge step after the subdivision
|
---|
836 | bool mMergeViewCells;
|
---|
837 | /// the width of the box filter
|
---|
838 | float mFilterWidth;
|
---|
839 | /// Maximal size of the filter in terms of contributing view cells
|
---|
840 | int mMaxFilterSize;
|
---|
841 | /// only for debugging: stores some rays used during view cell construction
|
---|
842 | VssRayContainer storedRays;
|
---|
843 | /// if kd node based pvs is used for preprocessing
|
---|
844 | bool mUseKdPvs;
|
---|
845 | /// types of distributions used for sampling
|
---|
846 | MixtureDistribution *mMixtureDistribution;
|
---|
847 |
|
---|
848 |
|
---|
849 |
|
---|
850 | //////////////////
|
---|
851 | //-- visualization options
|
---|
852 |
|
---|
853 | /// color code for view cells visualization
|
---|
854 | bool mShowVisualization;
|
---|
855 | int mColorCode;
|
---|
856 | bool mExportGeometry;
|
---|
857 | bool mExportRays;
|
---|
858 | bool mViewCellsFinished;
|
---|
859 | bool mEvaluateViewCells;
|
---|
860 |
|
---|
861 | /// if pvs should be exported with view cells
|
---|
862 | bool mExportPvs;
|
---|
863 |
|
---|
864 | /// if view cells geometry should be used from other sources
|
---|
865 | bool mUsePredefinedViewCells;
|
---|
866 | /// the weight for one triangle in the heuristics
|
---|
867 | float mTriangleWeight;
|
---|
868 | /// the weight for one object (= one entity issued with one draw call) in the heuristics
|
---|
869 | float mObjectWeight;
|
---|
870 |
|
---|
871 | vector<PerViewCellStat> mPerViewCellStat;
|
---|
872 | SamplesStatistics mSamplesStat;
|
---|
873 | };
|
---|
874 |
|
---|
875 |
|
---|
876 | /** Manages different higher order operations on the view cells.
|
---|
877 | */
|
---|
878 | class BspViewCellsManager: public ViewCellsManager
|
---|
879 | {
|
---|
880 |
|
---|
881 | public:
|
---|
882 | /** Constructor taking the bsp tree and the number of samples
|
---|
883 | used to construct the bsp tree.
|
---|
884 | */
|
---|
885 | BspViewCellsManager(ViewCellsTree *viewCellsTree, BspTree *tree);
|
---|
886 |
|
---|
887 | ~BspViewCellsManager();
|
---|
888 |
|
---|
889 | int ConstructSubdivision(const ObjectContainer &objects,
|
---|
890 | const VssRayContainer &rays);
|
---|
891 |
|
---|
892 | int PostProcess(const ObjectContainer &objects,
|
---|
893 | const VssRayContainer &rays);
|
---|
894 |
|
---|
895 | void Visualize(const ObjectContainer &objects,
|
---|
896 | const VssRayContainer &sampleRays);
|
---|
897 |
|
---|
898 | int GetType() const;
|
---|
899 |
|
---|
900 | ViewCell *GenerateViewCell(Mesh *mesh = NULL) const;
|
---|
901 |
|
---|
902 | bool ViewCellsConstructed() const;
|
---|
903 |
|
---|
904 | //void PrintStatistics(ostream &s) const;
|
---|
905 |
|
---|
906 | int CastLineSegment(const Vector3 &origin,
|
---|
907 | const Vector3 &termination,
|
---|
908 | ViewCellContainer &viewcells);
|
---|
909 |
|
---|
910 | /** Returns the probability that the view point lies
|
---|
911 | in this view cells.
|
---|
912 | */
|
---|
913 | float GetProbability(ViewCell *viewCell);
|
---|
914 |
|
---|
915 | /** Get a viewcell containing the specified point.
|
---|
916 | */
|
---|
917 | ViewCell *GetViewCell(const Vector3 &point, const bool active = false) const;
|
---|
918 |
|
---|
919 | /** Creates mesh for this view cell.
|
---|
920 | */
|
---|
921 | void CreateMesh(ViewCell *vc);
|
---|
922 |
|
---|
923 | void ExportViewCellGeometry(Exporter *exporter,
|
---|
924 | ViewCell *vc,
|
---|
925 | const AxisAlignedBox3 *box,
|
---|
926 | const AxisAlignedPlane *clipPlane = NULL
|
---|
927 | ) const;
|
---|
928 |
|
---|
929 | void CollectMergeCandidates(const VssRayContainer &rays,
|
---|
930 | vector<MergeCandidate> &candidates);
|
---|
931 |
|
---|
932 | void Finalize(ViewCell *viewCell, const bool createMesh);
|
---|
933 |
|
---|
934 | bool ExportViewCells(const string filename,
|
---|
935 | const bool exportPvs,
|
---|
936 | const ObjectContainer &objects);
|
---|
937 |
|
---|
938 | /** Constructs merge hierarchy which corresponds to the spatial hierarchy.
|
---|
939 | */
|
---|
940 | ViewCell *ConstructSpatialMergeTree(BspNode *root);
|
---|
941 |
|
---|
942 | void ExportSingleViewCells(const ObjectContainer &objects,
|
---|
943 | const int maxViewCells,
|
---|
944 | const bool sortViewCells,
|
---|
945 | const bool exportPvs,
|
---|
946 | const bool exportRays,
|
---|
947 | const int maxRays,
|
---|
948 | const string &prefix,
|
---|
949 | VssRayContainer *visRays = NULL);
|
---|
950 |
|
---|
951 | bool LineSegmentIntersects(const Vector3 &origin,
|
---|
952 | const Vector3 &termination,
|
---|
953 | ViewCell *viewCell);
|
---|
954 |
|
---|
955 | protected:
|
---|
956 |
|
---|
957 | void CollectViewCells();
|
---|
958 |
|
---|
959 | /// the BSP tree.
|
---|
960 | BspTree *mBspTree;
|
---|
961 | vector<BspRay *> mBspRays;
|
---|
962 |
|
---|
963 | private:
|
---|
964 |
|
---|
965 | /** Constructs a spatial merge tree only 2 levels deep.
|
---|
966 | */
|
---|
967 | ViewCell *ConstructDummyMergeTree(BspNode *root);
|
---|
968 | /** Exports visualization of the BSP splits.
|
---|
969 | */
|
---|
970 | void ExportSplits(const ObjectContainer &objects);
|
---|
971 | /** test if subdivision is valid in terms of volume / area.
|
---|
972 | */
|
---|
973 | void TestSubdivision();
|
---|
974 | };
|
---|
975 |
|
---|
976 |
|
---|
977 | /**
|
---|
978 | Manages different higher order operations on the KD type view cells.
|
---|
979 | */
|
---|
980 | class KdViewCellsManager: public ViewCellsManager
|
---|
981 | {
|
---|
982 |
|
---|
983 | public:
|
---|
984 |
|
---|
985 | KdViewCellsManager(ViewCellsTree *viewCellsTree, KdTree *tree);
|
---|
986 |
|
---|
987 | int ConstructSubdivision(const ObjectContainer &objects,
|
---|
988 | const VssRayContainer &rays);
|
---|
989 |
|
---|
990 | int CastLineSegment(const Vector3 &origin,
|
---|
991 | const Vector3 &termination,
|
---|
992 | ViewCellContainer &viewcells);
|
---|
993 |
|
---|
994 | int PostProcess(const ObjectContainer &objects,
|
---|
995 | const VssRayContainer &rays);
|
---|
996 |
|
---|
997 | void Visualize(const ObjectContainer &objects,
|
---|
998 | const VssRayContainer &sampleRays);
|
---|
999 |
|
---|
1000 | int GetType() const;
|
---|
1001 |
|
---|
1002 | bool ViewCellsConstructed() const;
|
---|
1003 |
|
---|
1004 | ViewCell *GenerateViewCell(Mesh *mesh) const;
|
---|
1005 |
|
---|
1006 | /** Prints out statistics of this approach.
|
---|
1007 | */
|
---|
1008 | // virtual void PrintStatistics(ostream &s) const;
|
---|
1009 | ViewCell *GetViewCell(const Vector3 &point, const bool active = false) const
|
---|
1010 | { return NULL; }
|
---|
1011 |
|
---|
1012 | float GetProbability(ViewCell *viewCell);
|
---|
1013 |
|
---|
1014 | void CreateMesh(ViewCell *vc);
|
---|
1015 |
|
---|
1016 | void ExportViewCellGeometry(Exporter *exporter,
|
---|
1017 | ViewCell *vc,
|
---|
1018 | const AxisAlignedBox3 *box,
|
---|
1019 | const AxisAlignedPlane *clipPlane = NULL) const;
|
---|
1020 |
|
---|
1021 |
|
---|
1022 | void CollectMergeCandidates(const VssRayContainer &rays,
|
---|
1023 | vector<MergeCandidate> &candidates);
|
---|
1024 |
|
---|
1025 | void ExportSingleViewCells(const ObjectContainer &objects,
|
---|
1026 | const int maxViewCells,
|
---|
1027 | const bool sortViewCells,
|
---|
1028 | const bool exportPvs,
|
---|
1029 | const bool exportRays,
|
---|
1030 | const int maxRays,
|
---|
1031 | const string &prefix,
|
---|
1032 | VssRayContainer *visRays = NULL);
|
---|
1033 |
|
---|
1034 | bool LineSegmentIntersects(const Vector3 &origin,
|
---|
1035 | const Vector3 &termination,
|
---|
1036 | ViewCell *viewCell);
|
---|
1037 |
|
---|
1038 | protected:
|
---|
1039 |
|
---|
1040 | /** Collects view cells from a hierarchy.
|
---|
1041 | */
|
---|
1042 | void CollectViewCells();
|
---|
1043 |
|
---|
1044 | KdNode *GetNodeForPvs(KdLeaf *leaf);
|
---|
1045 |
|
---|
1046 | ////////////////////////////////////////
|
---|
1047 |
|
---|
1048 | /// the BSP tree.
|
---|
1049 | KdTree *mKdTree;
|
---|
1050 |
|
---|
1051 | /// depth of the KD tree nodes with represent the view cells
|
---|
1052 | int mKdPvsDepth;
|
---|
1053 |
|
---|
1054 |
|
---|
1055 | };
|
---|
1056 |
|
---|
1057 |
|
---|
1058 | /** Manages different higher order operations on the view cells.
|
---|
1059 | */
|
---|
1060 | class VspBspViewCellsManager: public ViewCellsManager
|
---|
1061 | {
|
---|
1062 |
|
---|
1063 | public:
|
---|
1064 |
|
---|
1065 | VspBspViewCellsManager(ViewCellsTree *viewCellsTree, VspBspTree *tree);
|
---|
1066 | ~VspBspViewCellsManager();
|
---|
1067 |
|
---|
1068 | int ConstructSubdivision(const ObjectContainer &objects,
|
---|
1069 | const VssRayContainer &rays);
|
---|
1070 |
|
---|
1071 | int PostProcess(const ObjectContainer &objects,
|
---|
1072 | const VssRayContainer &rays);
|
---|
1073 |
|
---|
1074 | void Visualize(const ObjectContainer &objects,
|
---|
1075 | const VssRayContainer &sampleRays);
|
---|
1076 |
|
---|
1077 | int GetType() const;
|
---|
1078 |
|
---|
1079 | ViewCell *GenerateViewCell(Mesh *mesh = NULL) const;
|
---|
1080 |
|
---|
1081 | bool ViewCellsConstructed() const;
|
---|
1082 |
|
---|
1083 | int CastLineSegment(const Vector3 &origin,
|
---|
1084 | const Vector3 &termination,
|
---|
1085 | ViewCellContainer &viewcells);
|
---|
1086 |
|
---|
1087 | float GetProbability(ViewCell *viewCell);
|
---|
1088 |
|
---|
1089 | ViewCell *GetViewCell(const Vector3 &point, const bool active = false) const;
|
---|
1090 |
|
---|
1091 | bool GetViewPoint(Vector3 &viewPoint) const;
|
---|
1092 |
|
---|
1093 | bool ViewPointValid(const Vector3 &viewPoint) const;
|
---|
1094 |
|
---|
1095 | void CreateMesh(ViewCell *vc);
|
---|
1096 |
|
---|
1097 | bool ExportViewCells(const string filename,
|
---|
1098 | const bool exportPvs,
|
---|
1099 | const ObjectContainer &objects);
|
---|
1100 |
|
---|
1101 | int CastBeam(Beam &beam);
|
---|
1102 |
|
---|
1103 | void ExportViewCellGeometry(Exporter *exporter,
|
---|
1104 | ViewCell *vc,
|
---|
1105 | const AxisAlignedBox3 *box,
|
---|
1106 | const AxisAlignedPlane *clipPlane = NULL) const;
|
---|
1107 |
|
---|
1108 |
|
---|
1109 | void Finalize(ViewCell *viewCell, const bool createMesh);
|
---|
1110 |
|
---|
1111 | void CollectMergeCandidates(const VssRayContainer &rays,
|
---|
1112 | vector<MergeCandidate> &candidates);
|
---|
1113 |
|
---|
1114 | void ExportSingleViewCells(const ObjectContainer &objects,
|
---|
1115 | const int maxViewCells,
|
---|
1116 | const bool sortViewCells,
|
---|
1117 | const bool exportPvs,
|
---|
1118 | const bool exportRays,
|
---|
1119 | const int maxRays,
|
---|
1120 | const string &prefix,
|
---|
1121 | VssRayContainer *visRays = NULL);
|
---|
1122 |
|
---|
1123 |
|
---|
1124 | bool LineSegmentIntersects(const Vector3 &origin,
|
---|
1125 | const Vector3 &termination,
|
---|
1126 | ViewCell *viewCell);
|
---|
1127 |
|
---|
1128 | protected:
|
---|
1129 |
|
---|
1130 | int ComputeBoxIntersections(const AxisAlignedBox3 &box,
|
---|
1131 | ViewCellContainer &viewCells) const;
|
---|
1132 |
|
---|
1133 | /** Merges view cells according to some criteria
|
---|
1134 | */
|
---|
1135 | void MergeViewCells(const VssRayContainer &rays,
|
---|
1136 | const ObjectContainer &objects);
|
---|
1137 |
|
---|
1138 | void RefineViewCells(const VssRayContainer &rays, const ObjectContainer &objects);
|
---|
1139 |
|
---|
1140 | void CollectViewCells();
|
---|
1141 |
|
---|
1142 | /** Returns maximal depth difference of view cell
|
---|
1143 | leaves in tree.
|
---|
1144 | */
|
---|
1145 | int GetMaxTreeDiff(ViewCell *vc) const;
|
---|
1146 |
|
---|
1147 | /** Prepare view cells for use after loading them from disc.
|
---|
1148 | */
|
---|
1149 | void PrepareLoadedViewCells();
|
---|
1150 |
|
---|
1151 | /** Constructs merge hierarchy which corresponds to the spatial hierarchy.
|
---|
1152 | */
|
---|
1153 | ViewCell *ConstructSpatialMergeTree(BspNode *root);
|
---|
1154 |
|
---|
1155 | /// HACK for testing visibility filter functionality
|
---|
1156 | void TestFilter(const ObjectContainer &objects);
|
---|
1157 |
|
---|
1158 | /** Visualization of the pvs difference to exact visubility using
|
---|
1159 | from point queries.
|
---|
1160 | */
|
---|
1161 | void VisualizeWithFromPointQueries();
|
---|
1162 |
|
---|
1163 | /** Evaluate from point queries for the current scene.
|
---|
1164 | */
|
---|
1165 | void EvalFromPointQueries();
|
---|
1166 |
|
---|
1167 | /** Exports visualization of the BSP splits.
|
---|
1168 | */
|
---|
1169 | void ExportSplits(const ObjectContainer &objects,
|
---|
1170 | const VssRayContainer &rays);
|
---|
1171 |
|
---|
1172 |
|
---|
1173 | /////////////////////////
|
---|
1174 |
|
---|
1175 | /// the view space partition BSP tree.
|
---|
1176 | VspBspTree *mVspBspTree;
|
---|
1177 |
|
---|
1178 |
|
---|
1179 | private:
|
---|
1180 |
|
---|
1181 | /** test if subdivision is valid in terms of volume / area.
|
---|
1182 | */
|
---|
1183 | void TestSubdivision();
|
---|
1184 | };
|
---|
1185 |
|
---|
1186 |
|
---|
1187 |
|
---|
1188 | /** Manages different higher order operations on the view cells.
|
---|
1189 | */
|
---|
1190 | class VspOspViewCellsManager: public ViewCellsManager
|
---|
1191 | {
|
---|
1192 | friend class ViewCellsParseHandlers;
|
---|
1193 | friend class ViewCellsManager;
|
---|
1194 |
|
---|
1195 | public:
|
---|
1196 |
|
---|
1197 | /** This version takes a view cells tree and a hierarchy
|
---|
1198 | as input.
|
---|
1199 | */
|
---|
1200 | VspOspViewCellsManager(ViewCellsTree *vcTree,
|
---|
1201 | const string &hierarchyType);
|
---|
1202 |
|
---|
1203 | ~VspOspViewCellsManager();
|
---|
1204 |
|
---|
1205 | int ConstructSubdivision(const ObjectContainer &objects,
|
---|
1206 | const VssRayContainer &rays);
|
---|
1207 |
|
---|
1208 | int PostProcess(const ObjectContainer &objects,
|
---|
1209 | const VssRayContainer &rays);
|
---|
1210 |
|
---|
1211 | void Visualize(const ObjectContainer &objects,
|
---|
1212 | const VssRayContainer &sampleRays);
|
---|
1213 |
|
---|
1214 | int GetType() const;
|
---|
1215 |
|
---|
1216 | ViewCell *GenerateViewCell(Mesh *mesh = NULL) const;
|
---|
1217 |
|
---|
1218 | virtual Intersectable *GetIntersectable(const VssRay &ray,
|
---|
1219 | const bool isTermination) const;
|
---|
1220 |
|
---|
1221 | bool ViewCellsConstructed() const;
|
---|
1222 |
|
---|
1223 | int CastLineSegment(const Vector3 &origin,
|
---|
1224 | const Vector3 &termination,
|
---|
1225 | ViewCellContainer &viewcells);
|
---|
1226 |
|
---|
1227 | bool LineSegmentIntersects(const Vector3 &origin,
|
---|
1228 | const Vector3 &termination,
|
---|
1229 | ViewCell *viewCell);
|
---|
1230 |
|
---|
1231 | float GetProbability(ViewCell *viewCell);
|
---|
1232 |
|
---|
1233 | ViewCell *GetViewCell(const Vector3 &point,
|
---|
1234 | const bool active = false) const;
|
---|
1235 |
|
---|
1236 | bool GetViewPoint(Vector3 &viewPoint) const;
|
---|
1237 |
|
---|
1238 | bool ViewPointValid(const Vector3 &viewPoint) const;
|
---|
1239 |
|
---|
1240 | void CreateMesh(ViewCell *vc);
|
---|
1241 |
|
---|
1242 | bool ExportViewCells(const string filename,
|
---|
1243 | const bool exportPvs,
|
---|
1244 | const ObjectContainer &objects);
|
---|
1245 |
|
---|
1246 | int CastBeam(Beam &beam);
|
---|
1247 |
|
---|
1248 | void Finalize(ViewCell *viewCell, const bool createMesh);
|
---|
1249 |
|
---|
1250 | void ExportSingleViewCells(const ObjectContainer &objects,
|
---|
1251 | const int maxViewCells,
|
---|
1252 | const bool sortViewCells,
|
---|
1253 | const bool exportPvs,
|
---|
1254 | const bool exportRays,
|
---|
1255 | const int maxRays,
|
---|
1256 | const string &prefix,
|
---|
1257 | VssRayContainer *visRays = NULL);
|
---|
1258 | /** See parent class.
|
---|
1259 | */
|
---|
1260 | virtual void FinalizeViewCells(const bool createMesh);
|
---|
1261 |
|
---|
1262 | bool ExportViewCellsBinary(const string filename,
|
---|
1263 | const bool exportPvs,
|
---|
1264 | const ObjectContainer &objects);
|
---|
1265 |
|
---|
1266 | #if TEST_PACKETS
|
---|
1267 |
|
---|
1268 | float ComputeSampleContributions(const VssRayContainer &rays,
|
---|
1269 | const bool addContributions,
|
---|
1270 | const bool storeViewCells,
|
---|
1271 | const bool useHitObjects = false);
|
---|
1272 | #endif
|
---|
1273 |
|
---|
1274 |
|
---|
1275 | protected:
|
---|
1276 |
|
---|
1277 | /** View cells manager taking a view cells tree and a hierarchy as input.
|
---|
1278 | */
|
---|
1279 | VspOspViewCellsManager(ViewCellsTree *vcTree, HierarchyManager *hm);
|
---|
1280 |
|
---|
1281 | virtual void EvalViewCellPartition();
|
---|
1282 | /** Exports view cell geometry.
|
---|
1283 | */
|
---|
1284 | void ExportViewCellGeometry(Exporter *exporter,
|
---|
1285 | ViewCell *vc,
|
---|
1286 | const AxisAlignedBox3 *box,
|
---|
1287 | const AxisAlignedPlane *clipPlane = NULL) const;
|
---|
1288 |
|
---|
1289 | int ComputeBoxIntersections(const AxisAlignedBox3 &box,
|
---|
1290 | ViewCellContainer &viewCells) const;
|
---|
1291 |
|
---|
1292 | void CollectViewCells();
|
---|
1293 |
|
---|
1294 | virtual void CompressViewCells();
|
---|
1295 | /** Prepare view cells for use after loading them from disc.
|
---|
1296 | */
|
---|
1297 | void PrepareLoadedViewCells();
|
---|
1298 | /** Constructs merge hierarchy which corresponds to the spatial hierarchy.
|
---|
1299 | */
|
---|
1300 | ViewCell *ConstructSpatialMergeTree(VspNode *root);
|
---|
1301 | /** Exports visualization of the PVS.
|
---|
1302 | */
|
---|
1303 | void ExportPvs(const ObjectContainer &objects, const VssRayContainer &rays);
|
---|
1304 | /** Returns a hierarchy manager of the given name.
|
---|
1305 | */
|
---|
1306 | static HierarchyManager *CreateHierarchyManager(const string &name);
|
---|
1307 | /** collect objects intersecting a given spatial box
|
---|
1308 | */
|
---|
1309 | virtual void CollectObjects(const AxisAlignedBox3 &box, ObjectContainer &objects);
|
---|
1310 | /** Update the cost of pvss for hierarchy objects.
|
---|
1311 | */
|
---|
1312 | float UpdateObjectCosts();
|
---|
1313 |
|
---|
1314 |
|
---|
1315 | ////////////////
|
---|
1316 |
|
---|
1317 | /** Fast view cell loader in binary mode.
|
---|
1318 | */
|
---|
1319 | friend ViewCellsManager *ViewCellsManager::
|
---|
1320 | LoadViewCellsBinary(const std::string &filename,
|
---|
1321 | ObjectContainer &pvsObjects,
|
---|
1322 | bool finalizeViewCells,
|
---|
1323 | BoundingBoxConverter *bconverter);
|
---|
1324 |
|
---|
1325 |
|
---|
1326 | /** Print statistics about the view cells compression.
|
---|
1327 | */
|
---|
1328 | static void PrintCompressionStats(HierarchyManager *hm, const int pvsEntries);
|
---|
1329 |
|
---|
1330 |
|
---|
1331 | ////////////////////
|
---|
1332 |
|
---|
1333 | /// if we the objects are compressed after evaluation
|
---|
1334 | /// this makes only sense for testing purpose
|
---|
1335 | bool mCompressObjects;
|
---|
1336 | /// hierarchy manager managing view space / object subdivision.
|
---|
1337 | HierarchyManager *mHierarchyManager;
|
---|
1338 | };
|
---|
1339 |
|
---|
1340 |
|
---|
1341 | }
|
---|
1342 |
|
---|
1343 | #endif
|
---|