1 | #include "ViewCellsManager.h"
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2 | #include "RenderSimulator.h"
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3 | #include "Mesh.h"
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4 | #include "Triangle3.h"
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5 | #include "ViewCell.h"
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6 | #include "Environment.h"
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7 | #include "X3dParser.h"
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8 | #include "ViewCellBsp.h"
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9 | #include "KdTree.h"
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10 | #include "HierarchyManager.h"
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11 | #include "Exporter.h"
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12 | #include "VspBspTree.h"
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13 | #include "ViewCellsParser.h"
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14 | #include "Beam.h"
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15 | #include "VssPreprocessor.h"
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16 | #include "RssPreprocessor.h"
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17 | #include "BoundingBoxConverter.h"
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18 | #include "GlRenderer.h"
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19 | #include "ResourceManager.h"
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20 | #include "IntersectableWrapper.h"
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21 | #include "VspTree.h"
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22 | #include "OspTree.h"
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23 | #include "BvHierarchy.h"
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24 | #include "SamplingStrategy.h"
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25 | #include "SceneGraph.h"
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26 |
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27 |
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28 | // should not count origin object for sampling because it disturbs heuristics
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29 | #define SAMPLE_ORIGIN_OBJECTS 0
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30 |
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31 |
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32 | namespace GtpVisibilityPreprocessor {
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33 |
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34 |
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35 | // HACK
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36 | const static bool SAMPLE_AFTER_SUBDIVISION = true;
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37 | const static bool CLAMP_TO_BOX = true;
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38 |
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39 | template <typename T> class myless
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40 | {
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41 | public:
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42 | //bool operator() (HierarchyNode *v1, HierarchyNode *v2) const
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43 | bool operator() (T v1, T v2) const
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44 | {
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45 | return (v1->GetMergeCost() < v2->GetMergeCost());
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46 | }
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47 | };
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48 |
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49 |
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50 | ViewCellsManager::ViewCellsManager(ViewCellsTree *viewCellsTree):
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51 | mRenderer(NULL),
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52 | mInitialSamples(0),
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53 | mConstructionSamples(0),
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54 | mPostProcessSamples(0),
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55 | mVisualizationSamples(0),
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56 | mTotalAreaValid(false),
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57 | mTotalArea(0.0f),
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58 | mViewCellsFinished(false),
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59 | mMaxPvsSize(9999999),
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60 | mMinPvsSize(0), // one means only empty view cells are invalid
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61 | mMaxPvsRatio(1.0),
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62 | mViewCellPvsIsUpdated(false),
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63 | mPreprocessor(NULL),
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64 | mViewCellsTree(viewCellsTree),
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65 | mUsePredefinedViewCells(false)
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66 | {
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67 | mViewSpaceBox.Initialize();
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68 | ParseEnvironment();
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69 |
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70 | mViewCellsTree->SetViewCellsManager(this);
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71 | //mViewCellsTree = new ViewCellsTree(this);
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72 | }
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73 |
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74 |
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75 | void ViewCellsManager::ParseEnvironment()
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76 | {
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77 | // visualization stuff
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78 | Environment::GetSingleton()->GetBoolValue("ViewCells.Visualization.exportRays", mExportRays);
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79 | Environment::GetSingleton()->GetBoolValue("ViewCells.Visualization.exportGeometry", mExportGeometry);
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80 | Environment::GetSingleton()->GetFloatValue("ViewCells.maxPvsRatio", mMaxPvsRatio);
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81 |
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82 | Environment::GetSingleton()->GetBoolValue("ViewCells.processOnlyValidViewCells", mOnlyValidViewCells);
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83 |
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84 | Environment::GetSingleton()->GetIntValue("ViewCells.Construction.samples", mConstructionSamples);
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85 | Environment::GetSingleton()->GetIntValue("ViewCells.PostProcess.samples", mPostProcessSamples);
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86 | Environment::GetSingleton()->GetBoolValue("ViewCells.PostProcess.useRaysForMerge", mUseRaysForMerge);
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87 |
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88 | Environment::GetSingleton()->GetIntValue("ViewCells.Visualization.samples", mVisualizationSamples);
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89 |
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90 | Environment::GetSingleton()->GetIntValue("ViewCells.Construction.samplesPerPass", mSamplesPerPass);
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91 | Environment::GetSingleton()->GetBoolValue("ViewCells.exportToFile", mExportViewCells);
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92 |
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93 | Environment::GetSingleton()->GetIntValue("ViewCells.active", mNumActiveViewCells);
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94 | Environment::GetSingleton()->GetBoolValue("ViewCells.PostProcess.compress", mCompressViewCells);
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95 | Environment::GetSingleton()->GetBoolValue("ViewCells.Visualization.useClipPlane", mUseClipPlaneForViz);
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96 | Environment::GetSingleton()->GetBoolValue("ViewCells.PostProcess.merge", mMergeViewCells);
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97 | Environment::GetSingleton()->GetBoolValue("ViewCells.evaluateViewCells", mEvaluateViewCells);
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98 | Environment::GetSingleton()->GetBoolValue("ViewCells.showVisualization", mShowVisualization);
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99 | Environment::GetSingleton()->GetIntValue("ViewCells.Filter.maxSize", mMaxFilterSize);
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100 | Environment::GetSingleton()->GetFloatValue("ViewCells.Filter.width", mFilterWidth);
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101 | Environment::GetSingleton()->GetIntValue("ViewCells.renderCostEvaluationType", mRenderCostEvaluationType);
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102 |
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103 | Environment::GetSingleton()->GetBoolValue("ViewCells.exportBboxesForPvs", mExportBboxesForPvs);
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104 | Environment::GetSingleton()->GetBoolValue("ViewCells.exportPvs", mExportPvs);
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105 |
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106 | char buf[100];
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107 | Environment::GetSingleton()->GetStringValue("ViewCells.samplingType", buf);
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108 |
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109 |
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110 | // sampling type for view cells construction samples
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111 | if (strcmp(buf, "box") == 0)
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112 | {
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113 | mSamplingType = SamplingStrategy::SPATIAL_BOX_BASED_DISTRIBUTION;
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114 | }
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115 | else if (strcmp(buf, "directional") == 0)
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116 | {
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117 | mSamplingType = SamplingStrategy::DIRECTION_BASED_DISTRIBUTION;
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118 | }
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119 | else if (strcmp(buf, "object_directional") == 0)
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120 | {
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121 | mSamplingType = SamplingStrategy::OBJECT_DIRECTION_BASED_DISTRIBUTION;
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122 | }
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123 | /*else if (strcmp(buf, "interior") == 0)
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124 | {
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125 | mSamplingType = Preprocessor::OBJECTS_INTERIOR_DISTRIBUTION;
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126 | }*/
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127 | else
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128 | {
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129 | Debug << "error! wrong sampling type" << endl;
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130 | exit(0);
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131 | }
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132 |
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133 | // sampling type for evaluation samples
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134 | Environment::GetSingleton()->GetStringValue("ViewCells.Evaluation.samplingType", buf);
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135 |
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136 | if (strcmp(buf, "box") == 0)
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137 | {
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138 | mEvaluationSamplingType = SamplingStrategy::SPATIAL_BOX_BASED_DISTRIBUTION;
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139 | }
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140 | else if (strcmp(buf, "directional") == 0)
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141 | {
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142 | mEvaluationSamplingType = SamplingStrategy::DIRECTION_BASED_DISTRIBUTION;
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143 | }
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144 | else if (strcmp(buf, "object_directional") == 0)
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145 | {
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146 | mEvaluationSamplingType = SamplingStrategy::OBJECT_DIRECTION_BASED_DISTRIBUTION;
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147 | }
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148 | /*else if (strcmp(buf, "interior") == 0)
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149 | {
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150 | mEvaluationSamplingType = SamplingStrategy::OBJECTS_INTERIOR_DISTRIBUTION;
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151 | }*/
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152 | else
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153 | {
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154 | Debug << "error! wrong sampling type" << endl;
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155 | exit(0);
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156 | }
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157 |
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158 | Environment::GetSingleton()->GetStringValue("ViewCells.renderCostEvaluationType", buf);
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159 |
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160 | if (strcmp(buf, "perobject") == 0)
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161 | {
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162 | mRenderCostEvaluationType = ViewCellsManager::PER_OBJECT;
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163 | }
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164 | else if (strcmp(buf, "directional") == 0)
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165 | {
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166 | mRenderCostEvaluationType = ViewCellsManager::PER_TRIANGLE;
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167 | }
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168 | else
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169 | {
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170 | Debug << "error! wrong sampling type" << endl;
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171 | exit(0);
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172 | }
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173 |
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174 | Environment::GetSingleton()->GetStringValue("ViewCells.Visualization.colorCode", buf);
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175 |
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176 | if (strcmp(buf, "PVS") == 0)
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177 | mColorCode = 1;
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178 | else if (strcmp(buf, "MergedLeaves") == 0)
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179 | mColorCode = 2;
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180 | else if (strcmp(buf, "MergedTreeDiff") == 0)
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181 | mColorCode = 3;
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182 | else
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183 | mColorCode = 0;
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184 |
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185 |
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186 | Debug << "************ View Cells Manager options ***************" << endl;
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187 | Debug << "color code: " << mColorCode << endl;
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188 |
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189 | Debug << "export rays: " << mExportRays << endl;
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190 | Debug << "export geometry: " << mExportGeometry << endl;
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191 | Debug << "max pvs ratio: " << mMaxPvsRatio << endl;
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192 |
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193 | Debug << "process only valid view cells: " << mOnlyValidViewCells << endl;
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194 | Debug << "construction samples: " << mConstructionSamples << endl;
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195 | Debug << "post process samples: " << mPostProcessSamples << endl;
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196 | Debug << "post process use rays for merge: " << mUseRaysForMerge << endl;
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197 | Debug << "visualization samples: " << mVisualizationSamples << endl;
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198 | Debug << "construction samples per pass: " << mSamplesPerPass << endl;
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199 | Debug << "export to file: " << mExportViewCells << endl;
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200 |
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201 | Debug << "active view cells: " << mNumActiveViewCells << endl;
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202 | Debug << "post process compress: " << mCompressViewCells << endl;
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203 | Debug << "visualization use clipPlane: " << mUseClipPlaneForViz << endl;
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204 | Debug << "post process merge: " << mMergeViewCells << endl;
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205 | Debug << "evaluate view cells: " << mEvaluateViewCells << endl;
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206 | Debug << "sampling type: " << mSamplingType << endl;
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207 | Debug << "render cost evaluation type: " << mRenderCostEvaluationType << endl;
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208 | Debug << "evaluation sampling type: " << mEvaluationSamplingType << endl;
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209 | Debug << "show visualization: " << mShowVisualization << endl;
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210 | Debug << "filter width: " << mFilterWidth << endl;
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211 | Debug << "sample after subdivision: " << SAMPLE_AFTER_SUBDIVISION << endl;
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212 |
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213 | Debug << "export bounding boxes: " << mExportBboxesForPvs << endl;
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214 | Debug << "export pvs for view cells: " << mExportPvs << endl;
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215 | Debug << endl;
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216 | }
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217 |
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218 |
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219 | ViewCellsManager::~ViewCellsManager()
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220 | {
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221 | // HACK: if view cells tree does not
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222 | // handle view cells, we have to do it here
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223 | // question: rather create view cells resource manager?
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224 | if (!ViewCellsTreeConstructed())
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225 | {
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226 | CLEAR_CONTAINER(mViewCells);
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227 | }
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228 | }
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229 |
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230 |
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231 | AxisAlignedBox3 ViewCellsManager::GetViewCellBox(ViewCell *vc)
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232 | {
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233 | Mesh *m = vc->GetMesh();
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234 |
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235 | if (m)
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236 | {
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237 | m->ComputeBoundingBox();
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238 | return m->mBox;
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239 | }
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240 |
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241 | AxisAlignedBox3 box;
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242 | box.Initialize();
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243 |
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244 | if (!vc->IsLeaf()) {
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245 | ViewCellInterior *vci = (ViewCellInterior *) vc;
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246 |
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247 | ViewCellContainer::iterator it = vci->mChildren.begin();
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248 | for (; it != vci->mChildren.end(); ++it) {
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249 | box.Include(GetViewCellBox(*it));
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250 | }
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251 | }
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252 |
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253 | return box;
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254 | }
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255 |
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256 |
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257 | bool ViewCellsManager::EqualToSpatialNode(ViewCell *viewCell) const
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258 | {
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259 | return false;
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260 | }
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261 |
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262 |
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263 | int ViewCellsManager::CastPassSamples(const int samplesPerPass,
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264 | const int sampleType,
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265 | VssRayContainer &passSamples) const
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266 | {
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267 | SimpleRayContainer simpleRays;
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268 | const long startTime = GetTime();
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269 |
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270 | mPreprocessor->GenerateRays(samplesPerPass, sampleType, simpleRays);
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271 | Debug << "generated " << samplesPerPass << " samples in " << TimeDiff(startTime, GetTime()) * 1e-3 << " secs" << endl;
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272 |
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273 | // shoot simple ray and add it to importance samples
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274 | mPreprocessor->CastRays(simpleRays, passSamples, true);
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275 | Debug << "cast " << samplesPerPass << " samples in " << TimeDiff(startTime, GetTime()) * 1e-3 << " secs" << endl;
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276 |
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277 | return (int)passSamples.size();
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278 | }
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279 |
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280 |
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281 | /// helper function which destroys rays or copies them into the output ray container
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282 | inline void disposeRays(VssRayContainer &rays, VssRayContainer *outRays)
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283 | {
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284 | cout << "disposing samples ... ";
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285 | long startTime = GetTime();
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286 | int n = (int)rays.size();
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287 |
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288 | if (outRays)
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289 | {
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290 | VssRayContainer::const_iterator it, it_end = rays.end();
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291 | for (it = rays.begin(); it != it_end; ++ it)
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292 | {
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293 | outRays->push_back(*it);
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294 | }
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295 | }
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296 | else
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297 | {
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298 | VssRayContainer::const_iterator it, it_end = rays.end();
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299 | for (it = rays.begin(); it != it_end; ++ it)
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300 | {
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301 | if (!(*it)->IsActive())
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302 | delete (*it);
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303 | }
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304 | }
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305 |
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306 | cout << "finished" << endl;
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307 | Debug << "disposed " << n << " samples in " << TimeDiff(startTime, GetTime()) * 1e-3 << " secs" << endl;
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308 | }
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309 |
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310 |
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311 | int ViewCellsManager::Construct(Preprocessor *preprocessor, VssRayContainer *outRays)
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312 | {
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313 | int numSamples = 0;
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314 |
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315 | SimpleRayContainer simpleRays;
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316 | VssRayContainer initialSamples;
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317 |
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318 | // store pointer to preprocessor for further use during construction
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319 | mPreprocessor = preprocessor;
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320 |
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321 |
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322 | ///////////////////////////////////////////////////////
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323 | //-- Initial sampling for the construction of the view cell hierarchy.
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324 | //-- We use uniform sampling / box based sampling.
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325 |
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326 | long startTime = GetTime();
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327 | cout << "view cell construction: casting " << mInitialSamples << " initial samples ... ";
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328 |
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329 | // cast initial samples
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330 | CastPassSamples(mInitialSamples, mSamplingType, initialSamples);
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331 |
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332 | cout << "finished in " << TimeDiff(startTime, GetTime()) * 1e-3 << " secs" << endl;
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333 |
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334 | // construct view cells
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335 | ConstructSubdivision(preprocessor->mObjects, initialSamples);
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336 |
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337 | // initial samples count for overall samples ...
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338 | numSamples += mInitialSamples;
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339 |
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340 | // rays can be passed or deleted
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341 | disposeRays(initialSamples, outRays);
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342 |
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343 | cout << "time needed for initial construction: "
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344 | << TimeDiff(startTime, GetTime()) * 1e-3 << " secs" << endl;
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345 |
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346 | Debug << "time needed for initial construction: "
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347 | << TimeDiff(startTime, GetTime()) * 1e-3 << " secs" << endl;
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348 |
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349 | // collect view cells and compute statistics
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350 | ResetViewCells();
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351 |
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352 |
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353 | ///////////////////
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354 | //-- Initial hierarchy construction finished.
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355 | //-- We can do some stats and visualization
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356 |
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357 | if (0)
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358 | {
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359 | //-- export initial view cell partition
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360 | Debug << "\nView cells after initial sampling:\n" << mCurrentViewCellsStats << endl;
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361 |
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362 | const string filename("viewcells.wrl");
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363 | Exporter *exporter = Exporter::GetExporter(filename.c_str());
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364 |
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365 | if (exporter)
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366 | {
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367 | cout << "exporting initial view cells (=leaves) to " << filename.c_str() << " ... ";
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368 |
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369 | if (mExportGeometry)
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370 | {
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371 | exporter->ExportGeometry(preprocessor->mObjects);
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372 | }
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373 |
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374 | exporter->SetWireframe();
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375 | ExportViewCellsForViz(exporter, NULL, GetClipPlane());
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376 |
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377 | delete exporter;
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378 | cout << "finished" << endl;
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379 | }
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380 | }
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381 |
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382 |
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383 | //////////////////////
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384 | //-- Cast some more sampling after initial construction.
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385 | //-- The additional rays can be used to gain
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386 | //-- some more information before the bottom-up merge
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387 | //-- note: guided rays could be used for this task
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388 |
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389 | // time spent after construction of the initial partition
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390 | startTime = GetTime();
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391 | const int n = mConstructionSamples; //+initialSamples;
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392 | // should we use directional samples?
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393 | bool dirSamples = (mSamplingType == SamplingStrategy::DIRECTION_BASED_DISTRIBUTION);
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394 |
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395 | while (numSamples < n)
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396 | {
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397 | cout << "casting " << mSamplesPerPass << " samples of " << n << " ... ";
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398 | Debug << "casting " << mSamplesPerPass << " samples of " << n << " ... ";
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399 |
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400 | VssRayContainer constructionSamples;
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401 |
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402 | const int samplingType = mSamplingType;
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403 | //dirSamples ? Preprocessor::DIRECTION_BASED_DISTRIBUTION : Preprocessor::SPATIAL_BOX_BASED_DISTRIBUTION;
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404 |
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405 | if (0) dirSamples = !dirSamples; // toggle sampling method
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406 |
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407 | // cast new samples
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408 | numSamples += CastPassSamples(mSamplesPerPass,
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409 | samplingType,
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410 | constructionSamples);
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411 |
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412 | cout << "finished" << endl;
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413 | cout << "computing sample contribution for " << (int)constructionSamples.size() << " samples ... ";
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414 |
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415 | // computes sample contribution of cast rays TODO: leak?
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416 | if (SAMPLE_AFTER_SUBDIVISION)
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417 | ComputeSampleContributions(constructionSamples, true, false);
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418 |
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419 | cout << "finished" << endl;
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420 |
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421 | disposeRays(constructionSamples, outRays);
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422 | cout << "total samples: " << numSamples << endl;
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423 | }
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424 |
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425 |
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426 | if (0)
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427 | {
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428 | ///////////////
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429 | //-- Get stats after the additional sampling step
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430 | //-- and before the bottom-up merge step
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431 |
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432 | EvaluateViewCellsStats();
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433 | Debug << "\noriginal view cell partition before post process:\n"
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434 | << mCurrentViewCellsStats << endl;
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435 |
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436 | mRenderer->RenderScene();
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437 | SimulationStatistics ss;
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438 | dynamic_cast<RenderSimulator *>(mRenderer)->GetStatistics(ss);
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439 |
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440 | Debug << ss << endl;
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441 | }
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442 |
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443 | ////////////////////
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444 | //-- post processing of the initial construction
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445 | //-- We can bottom-up merge the view cells in this step
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446 | //-- We can additionally cast some post processing sample rays.
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447 | //-- These rays can be used to store the view cells with the rays
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448 |
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449 | VssRayContainer postProcessSamples;
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450 | cout << "casting " << mPostProcessSamples << " post processing samples ... ";
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451 |
|
---|
452 | CastPassSamples(mPostProcessSamples, mSamplingType, postProcessSamples);
|
---|
453 |
|
---|
454 | cout << "finished" << endl;
|
---|
455 | cout << "starting post processing and visualization" << endl;
|
---|
456 |
|
---|
457 | // store view cells with rays for post processing?
|
---|
458 | const bool storeViewCells = true;
|
---|
459 |
|
---|
460 | if (SAMPLE_AFTER_SUBDIVISION)
|
---|
461 | ComputeSampleContributions(postProcessSamples, true, storeViewCells);
|
---|
462 |
|
---|
463 | PostProcess(preprocessor->mObjects, postProcessSamples);
|
---|
464 |
|
---|
465 | const float secs = TimeDiff(startTime, GetTime()) * 1e-3f;
|
---|
466 | cout << "post processing (=merge) finished in " << secs << " secs" << endl;
|
---|
467 |
|
---|
468 | Debug << "post processing time: " << secs << endl;
|
---|
469 | disposeRays(postProcessSamples, outRays);
|
---|
470 |
|
---|
471 |
|
---|
472 | ////////////////
|
---|
473 | //-- Evaluation of the resulting view cell partition.
|
---|
474 | //-- We cast a number of new samples and measure the render cost
|
---|
475 |
|
---|
476 | if (mEvaluateViewCells)
|
---|
477 | {
|
---|
478 | EvalViewCellPartition();
|
---|
479 | }
|
---|
480 |
|
---|
481 | /////////////////
|
---|
482 | //-- Finally, we do some visualization
|
---|
483 |
|
---|
484 | if (mShowVisualization)
|
---|
485 | {
|
---|
486 | VssRayContainer visualizationSamples;
|
---|
487 |
|
---|
488 | ////////
|
---|
489 | //-- visualization rays, e.g., to show some samples in the scene
|
---|
490 | CastPassSamples(mVisualizationSamples,
|
---|
491 | SamplingStrategy::DIRECTION_BASED_DISTRIBUTION,
|
---|
492 | visualizationSamples);
|
---|
493 |
|
---|
494 | if (SAMPLE_AFTER_SUBDIVISION)
|
---|
495 | ComputeSampleContributions(visualizationSamples, true, storeViewCells);
|
---|
496 |
|
---|
497 | // various visualizations
|
---|
498 | Visualize(preprocessor->mObjects, visualizationSamples);
|
---|
499 |
|
---|
500 | disposeRays(visualizationSamples, outRays);
|
---|
501 | }
|
---|
502 |
|
---|
503 | // recalculate view cells
|
---|
504 | EvaluateViewCellsStats();
|
---|
505 |
|
---|
506 | return numSamples;
|
---|
507 | }
|
---|
508 |
|
---|
509 |
|
---|
510 | AxisAlignedPlane *ViewCellsManager::GetClipPlane()
|
---|
511 | {
|
---|
512 | return mUseClipPlaneForViz ? &mClipPlaneForViz : NULL;
|
---|
513 | }
|
---|
514 |
|
---|
515 |
|
---|
516 | void ViewCellsManager::EvalViewCellHistogram(const string filename,
|
---|
517 | const int nViewCells)
|
---|
518 | {
|
---|
519 | std::ofstream outstream;
|
---|
520 | outstream.open(filename.c_str());
|
---|
521 |
|
---|
522 | ViewCellContainer viewCells;
|
---|
523 | mViewCellsTree->CollectBestViewCellSet(viewCells, nViewCells);
|
---|
524 |
|
---|
525 | float maxRenderCost, minRenderCost;
|
---|
526 |
|
---|
527 | // sort by render cost
|
---|
528 | sort(viewCells.begin(), viewCells.end(), ViewCell::SmallerRenderCost);
|
---|
529 |
|
---|
530 | minRenderCost = viewCells.front()->GetRenderCost();
|
---|
531 | maxRenderCost = viewCells.back()->GetRenderCost();
|
---|
532 |
|
---|
533 | Debug << "histogram min rc: " << minRenderCost << " max rc: " << maxRenderCost << endl;
|
---|
534 |
|
---|
535 | int histoIntervals;
|
---|
536 | Environment::GetSingleton()->GetIntValue("Preprocessor.histogram.intervals", histoIntervals);
|
---|
537 | const int intervals = min(histoIntervals, (int)viewCells.size());
|
---|
538 |
|
---|
539 | int histoMaxVal;
|
---|
540 | Environment::GetSingleton()->GetIntValue("Preprocessor.histogram.maxValue", histoMaxVal);
|
---|
541 | maxRenderCost = max((float)histoMaxVal, maxRenderCost);
|
---|
542 |
|
---|
543 |
|
---|
544 | const float range = maxRenderCost - minRenderCost;
|
---|
545 | const float stepSize = range / (float)intervals;
|
---|
546 |
|
---|
547 | float currentRenderCost = minRenderCost;//(int)ceil(minRenderCost);
|
---|
548 |
|
---|
549 | const float totalRenderCost = mViewCellsTree->GetRoot()->GetRenderCost();
|
---|
550 | const float totalVol = GetViewSpaceBox().GetVolume();
|
---|
551 | //const float totalVol = mViewCellsTree->GetRoot()->GetVolume();
|
---|
552 |
|
---|
553 | int j = 0;
|
---|
554 | int i = 0;
|
---|
555 |
|
---|
556 | ViewCellContainer::const_iterator it = viewCells.begin(), it_end = viewCells.end();
|
---|
557 |
|
---|
558 | // count for integral
|
---|
559 | float volSum = 0;
|
---|
560 | int smallerCostSum = 0;
|
---|
561 |
|
---|
562 | // note can skip computations for view cells already evaluated and delete them from vector ...
|
---|
563 | while (1)
|
---|
564 | {
|
---|
565 | // count for histogram value
|
---|
566 | float volDif = 0;
|
---|
567 | int smallerCostDif = 0;
|
---|
568 |
|
---|
569 | while ((i < (int)viewCells.size()) && (viewCells[i]->GetRenderCost() < currentRenderCost))
|
---|
570 | {
|
---|
571 | volSum += viewCells[i]->GetVolume();
|
---|
572 | volDif += viewCells[i]->GetVolume();
|
---|
573 |
|
---|
574 | ++ i;
|
---|
575 | ++ smallerCostSum;
|
---|
576 | ++ smallerCostDif;
|
---|
577 | }
|
---|
578 |
|
---|
579 | if ((i >= (int)viewCells.size()) || (currentRenderCost >= maxRenderCost))
|
---|
580 | break;
|
---|
581 |
|
---|
582 | const float rcRatio = currentRenderCost / maxRenderCost;
|
---|
583 | const float volRatioSum = volSum / totalVol;
|
---|
584 | const float volRatioDif = volDif / totalVol;
|
---|
585 |
|
---|
586 | outstream << "#Pass\n" << j ++ << endl;
|
---|
587 | outstream << "#RenderCostRatio\n" << rcRatio << endl;
|
---|
588 | outstream << "#WeightedCost\n" << currentRenderCost / totalVol << endl;
|
---|
589 | outstream << "#ViewCellsDif\n" << smallerCostDif << endl;
|
---|
590 | outstream << "#ViewCellsSum\n" << smallerCostSum << endl;
|
---|
591 | outstream << "#VolumeDif\n" << volRatioDif << endl << endl;
|
---|
592 | outstream << "#VolumeSum\n" << volRatioSum << endl << endl;
|
---|
593 |
|
---|
594 | // increase current render cost
|
---|
595 | currentRenderCost += stepSize;
|
---|
596 | }
|
---|
597 |
|
---|
598 | outstream.close();
|
---|
599 | }
|
---|
600 |
|
---|
601 |
|
---|
602 |
|
---|
603 | ViewCellsManager *ViewCellsManager::LoadViewCells(const string &filename,
|
---|
604 | ObjectContainer *objects,
|
---|
605 | const bool finalizeViewCells,
|
---|
606 | BoundingBoxConverter *bconverter)
|
---|
607 |
|
---|
608 | {
|
---|
609 | ViewCellsParser parser;
|
---|
610 | ViewCellsManager *vm = NULL;
|
---|
611 |
|
---|
612 | if (parser.ParseViewCellsFile(filename, &vm, objects, bconverter))
|
---|
613 | {
|
---|
614 | const long startTime = GetTime();
|
---|
615 |
|
---|
616 | vm->ResetViewCells();
|
---|
617 |
|
---|
618 | vm->mViewCellsFinished = true;
|
---|
619 | vm->mMaxPvsSize = (int)objects->size();
|
---|
620 |
|
---|
621 | if (finalizeViewCells)
|
---|
622 | {
|
---|
623 | // create the meshes and compute volumes
|
---|
624 | vm->FinalizeViewCells(true);
|
---|
625 | vm->mViewCellsTree->AssignRandomColors();
|
---|
626 | }
|
---|
627 |
|
---|
628 | Debug << (int)vm->mViewCells.size() << " view cells loaded in "
|
---|
629 | << TimeDiff(startTime, GetTime()) * 1e-3 << " secs" << endl;
|
---|
630 | }
|
---|
631 | else
|
---|
632 | {
|
---|
633 | Debug << "Error: loading view cells failed!" << endl;
|
---|
634 | DEL_PTR(vm);
|
---|
635 | }
|
---|
636 |
|
---|
637 | return vm;
|
---|
638 | }
|
---|
639 |
|
---|
640 |
|
---|
641 | bool VspBspViewCellsManager::ExportViewCells(const string filename,
|
---|
642 | const bool exportPvs,
|
---|
643 | const ObjectContainer &objects)
|
---|
644 | {
|
---|
645 | if (!ViewCellsConstructed() || !ViewCellsTreeConstructed())
|
---|
646 | {
|
---|
647 | return false;
|
---|
648 | }
|
---|
649 |
|
---|
650 | cout << "exporting view cells to xml ... ";
|
---|
651 |
|
---|
652 | OUT_STREAM stream(filename.c_str());
|
---|
653 |
|
---|
654 | // for output we need unique ids for each view cell
|
---|
655 | CreateUniqueViewCellIds();
|
---|
656 |
|
---|
657 | stream << "<?xml version=\"1.0\" encoding=\"UTF-8\"?>"<<endl;
|
---|
658 | stream << "<VisibilitySolution>" << endl;
|
---|
659 |
|
---|
660 | if (exportPvs)
|
---|
661 | {
|
---|
662 | //-- export bounding boxes
|
---|
663 | stream << "<BoundingBoxes>" << endl;
|
---|
664 | ObjectContainer::const_iterator oit, oit_end = objects.end();
|
---|
665 |
|
---|
666 | for (oit = objects.begin(); oit != oit_end; ++ oit)
|
---|
667 | {
|
---|
668 | const AxisAlignedBox3 box = (*oit)->GetBox();
|
---|
669 |
|
---|
670 | ////////////
|
---|
671 | //-- the bounding boxes
|
---|
672 | stream << "<BoundingBox" << " id=\"" << (*oit)->GetId() << "\""
|
---|
673 | << " min=\"" << box.Min().x << " " << box.Min().y << " " << box.Min().z << "\""
|
---|
674 | << " max=\"" << box.Max().x << " " << box.Max().y << " " << box.Max().z << "\" />" << endl;
|
---|
675 | }
|
---|
676 |
|
---|
677 | stream << "</BoundingBoxes>" << endl;
|
---|
678 | }
|
---|
679 |
|
---|
680 |
|
---|
681 | /////////////
|
---|
682 | //-- export the view cells and the pvs
|
---|
683 |
|
---|
684 | const int numViewCells = mCurrentViewCellsStats.viewCells;
|
---|
685 | stream << "<ViewCells number=\"" << numViewCells << "\" >" << endl;
|
---|
686 |
|
---|
687 | mViewCellsTree->Export(stream, exportPvs);
|
---|
688 |
|
---|
689 | stream << "</ViewCells>" << endl;
|
---|
690 |
|
---|
691 |
|
---|
692 | //////////
|
---|
693 | //-- export the view space hierarchy
|
---|
694 |
|
---|
695 | stream << "<ViewSpaceHierarchy type=\"bsp\""
|
---|
696 | << " min=\"" << mViewSpaceBox.Min().x << " " << mViewSpaceBox.Min().y << " " << mViewSpaceBox.Min().z << "\""
|
---|
697 | << " max=\"" << mViewSpaceBox.Max().x << " " << mViewSpaceBox.Max().y << " " << mViewSpaceBox.Max().z << "\">" << endl;
|
---|
698 |
|
---|
699 | mVspBspTree->Export(stream);
|
---|
700 | stream << "</ViewSpaceHierarchy>" << endl;
|
---|
701 |
|
---|
702 | stream << "</VisibilitySolution>" << endl;
|
---|
703 |
|
---|
704 | stream.close();
|
---|
705 | cout << "finished" << endl;
|
---|
706 |
|
---|
707 | return true;
|
---|
708 | }
|
---|
709 |
|
---|
710 |
|
---|
711 | void ViewCellsManager::EvalViewCellHistogramForPvsSize(const string filename,
|
---|
712 | const int nViewCells)
|
---|
713 | {
|
---|
714 | std::ofstream outstream;
|
---|
715 | outstream.open(filename.c_str());
|
---|
716 |
|
---|
717 | ViewCellContainer viewCells;
|
---|
718 | mViewCellsTree->CollectBestViewCellSet(viewCells, nViewCells);
|
---|
719 |
|
---|
720 | int maxPvs, maxVal, minVal;
|
---|
721 |
|
---|
722 | // sort by pvs size
|
---|
723 | sort(viewCells.begin(), viewCells.end(), ViewCell::SmallerPvs);
|
---|
724 |
|
---|
725 | maxPvs = mViewCellsTree->GetPvsSize(viewCells.back());
|
---|
726 | minVal = 0;
|
---|
727 |
|
---|
728 | // hack: normalize pvs size
|
---|
729 | int histoMaxVal;
|
---|
730 | Environment::GetSingleton()->GetIntValue("Preprocessor.histogram.maxValue", histoMaxVal);
|
---|
731 | maxVal = max(histoMaxVal, maxPvs);
|
---|
732 |
|
---|
733 | Debug << "histogram minpvssize: " << minVal << " maxpvssize: " << maxVal
|
---|
734 | << " real maxpvs " << maxPvs << endl;
|
---|
735 |
|
---|
736 | int histoIntervals;
|
---|
737 | Environment::GetSingleton()->GetIntValue("Preprocessor.histogram.intervals", histoIntervals);
|
---|
738 | const int intervals = min(histoIntervals, (int)viewCells.size());
|
---|
739 |
|
---|
740 | const int range = maxVal - minVal;
|
---|
741 | int stepSize = range / intervals;
|
---|
742 |
|
---|
743 | // set step size to avoid endless loop
|
---|
744 | if (!stepSize) stepSize = 1;
|
---|
745 |
|
---|
746 | Debug << "stepsize: " << stepSize << endl;
|
---|
747 |
|
---|
748 | const float totalRenderCost = mViewCellsTree->GetRoot()->GetRenderCost();
|
---|
749 | const float totalVol = GetViewSpaceBox().GetVolume();
|
---|
750 |
|
---|
751 | int currentPvs = minVal;//(int)ceil(minRenderCost);
|
---|
752 |
|
---|
753 | int i = 0;
|
---|
754 | int j = 0;
|
---|
755 | float volSum = 0;
|
---|
756 | int smallerSum = 0;
|
---|
757 |
|
---|
758 | ViewCellContainer::const_iterator it = viewCells.begin(), it_end = viewCells.end();
|
---|
759 |
|
---|
760 | for (int j = 0; j < intervals; ++ j)
|
---|
761 | {
|
---|
762 | float volDif = 0;
|
---|
763 | int smallerDif = 0;
|
---|
764 |
|
---|
765 | while ((i < (int)viewCells.size()) &&
|
---|
766 | (mViewCellsTree->GetPvsSize(viewCells[i]) < currentPvs))
|
---|
767 | {
|
---|
768 | volDif += viewCells[i]->GetVolume();
|
---|
769 | volSum += viewCells[i]->GetVolume();
|
---|
770 |
|
---|
771 | ++ i;
|
---|
772 | ++ smallerDif;
|
---|
773 | ++ smallerSum;
|
---|
774 | }
|
---|
775 |
|
---|
776 | if (0 && (i < (int)viewCells.size()))
|
---|
777 | Debug << "new pvs size increase: " << mViewCellsTree->GetPvsSize(viewCells[i])
|
---|
778 | << " " << currentPvs << endl;
|
---|
779 |
|
---|
780 | const float volRatioDif = volDif / totalVol;
|
---|
781 | const float volRatioSum = volSum / totalVol;
|
---|
782 |
|
---|
783 | outstream << "#Pass\n" << j << endl;
|
---|
784 | outstream << "#Pvs\n" << currentPvs << endl;
|
---|
785 | outstream << "#ViewCellsDif\n" << smallerDif << endl;
|
---|
786 | outstream << "#ViewCellsSum\n" << smallerSum << endl;
|
---|
787 | outstream << "#VolumeDif\n" << volRatioDif << endl << endl;
|
---|
788 | outstream << "#VolumeSum\n" << volRatioSum << endl << endl;
|
---|
789 |
|
---|
790 | //if ((i >= (int)viewCells.size()) || (currentPvs >= maxPvs)) break;
|
---|
791 |
|
---|
792 | //-- increase current pvs size to define next interval
|
---|
793 | currentPvs += stepSize;
|
---|
794 | }
|
---|
795 |
|
---|
796 | outstream.close();
|
---|
797 | }
|
---|
798 |
|
---|
799 |
|
---|
800 | bool ViewCellsManager::GetExportPvs() const
|
---|
801 | {
|
---|
802 | return mExportPvs;
|
---|
803 | }
|
---|
804 |
|
---|
805 |
|
---|
806 | bool ViewCellsManager::AddSampleToPvs(Intersectable *obj,
|
---|
807 | const Vector3 &hitPoint,
|
---|
808 | ViewCell *vc,
|
---|
809 | const float pdf,
|
---|
810 | float &contribution) const
|
---|
811 | {
|
---|
812 | if (!obj) return false;
|
---|
813 |
|
---|
814 | // potentially visible objects
|
---|
815 | return vc->AddPvsSample(obj, pdf, contribution);
|
---|
816 | }
|
---|
817 |
|
---|
818 |
|
---|
819 | void ViewCellsManager::ResetPvs()
|
---|
820 | {
|
---|
821 | if (ViewCellsTreeConstructed())
|
---|
822 | {
|
---|
823 | mViewCellsTree->ResetPvs();
|
---|
824 | }
|
---|
825 | else
|
---|
826 | {
|
---|
827 | cout << "view cells tree not constructed" << endl;
|
---|
828 | }
|
---|
829 | }
|
---|
830 |
|
---|
831 |
|
---|
832 | void ViewCellsManager::EvalViewCellPartition()
|
---|
833 | {
|
---|
834 | int samplesPerPass;
|
---|
835 | int numSamples;
|
---|
836 | int castSamples = 0;
|
---|
837 | char str[64];
|
---|
838 |
|
---|
839 | Environment::GetSingleton()->GetIntValue("ViewCells.Evaluation.samplesPerPass", samplesPerPass);
|
---|
840 | Environment::GetSingleton()->GetIntValue("ViewCells.Evaluation.samples", numSamples);
|
---|
841 |
|
---|
842 | char statsPrefix[100];
|
---|
843 | Environment::GetSingleton()->GetStringValue("ViewCells.Evaluation.statsPrefix", statsPrefix);
|
---|
844 |
|
---|
845 | Debug << "view cell evaluation samples per pass: " << samplesPerPass << endl;
|
---|
846 | Debug << "view cell evaluation samples: " << numSamples << endl;
|
---|
847 | Debug << "view cell stats prefix: " << statsPrefix << endl;
|
---|
848 |
|
---|
849 | // should directional sampling be used?
|
---|
850 | bool dirSamples = (mEvaluationSamplingType == SamplingStrategy::DIRECTION_BASED_DISTRIBUTION);
|
---|
851 |
|
---|
852 | cout << "reseting pvs ... ";
|
---|
853 |
|
---|
854 | const bool startFromZero = true;
|
---|
855 |
|
---|
856 | // reset pvs and start over from zero
|
---|
857 | if (startFromZero)
|
---|
858 | {
|
---|
859 | mViewCellsTree->ResetPvs();
|
---|
860 | }
|
---|
861 | else // start from current sampless
|
---|
862 | {
|
---|
863 | // statistics before casting more samples
|
---|
864 | cout << "compute new statistics ... ";
|
---|
865 | sprintf(str, "-%09d-eval.log", castSamples);
|
---|
866 | string fName = string(statsPrefix) + string(str);
|
---|
867 |
|
---|
868 | mViewCellsTree->ExportStats(fName);
|
---|
869 | cout << "finished" << endl;
|
---|
870 | }
|
---|
871 |
|
---|
872 | cout << "finished" << endl;
|
---|
873 | cout << "Evaluating view cell partition ... " << endl;
|
---|
874 |
|
---|
875 | while (castSamples < numSamples)
|
---|
876 | {
|
---|
877 | VssRayContainer evaluationSamples;
|
---|
878 |
|
---|
879 | const int samplingType = mEvaluationSamplingType;
|
---|
880 | /* dirSamples ?
|
---|
881 | Preprocessor::DIRECTION_BASED_DISTRIBUTION :
|
---|
882 | Preprocessor::SPATIAL_BOX_BASED_DISTRIBUTION;
|
---|
883 | */
|
---|
884 | long startTime = GetTime();
|
---|
885 |
|
---|
886 | //-- construction rays => we use uniform samples for this
|
---|
887 |
|
---|
888 | cout << "casting " << samplesPerPass << " samples ... ";
|
---|
889 | Debug << "casting " << samplesPerPass << " samples ... ";
|
---|
890 |
|
---|
891 | CastPassSamples(samplesPerPass, samplingType, evaluationSamples);
|
---|
892 |
|
---|
893 | castSamples += samplesPerPass;
|
---|
894 |
|
---|
895 | Real timeDiff = TimeDiff(startTime, GetTime());
|
---|
896 | Debug << "finished in " << timeDiff * 1e-3 << " secs" << endl;
|
---|
897 | cout << "finished in " << timeDiff * 1e-3 << " secs" << endl;
|
---|
898 |
|
---|
899 | cout << "computing sample contributions of " << (int)evaluationSamples.size() << " samples ... ";
|
---|
900 | Debug << "computing sample contributions of " << (int)evaluationSamples.size() << " samples ... ";
|
---|
901 |
|
---|
902 | startTime = GetTime();
|
---|
903 |
|
---|
904 | ComputeSampleContributions(evaluationSamples, true, false);
|
---|
905 |
|
---|
906 | timeDiff = TimeDiff(startTime, GetTime());
|
---|
907 | cout << "finished in " << timeDiff * 1e-3 << " secs" << endl;
|
---|
908 | Debug << "finished in " << timeDiff * 1e-3 << " secs" << endl;
|
---|
909 |
|
---|
910 | startTime = GetTime();
|
---|
911 | cout << "compute new statistics ... " << endl;
|
---|
912 |
|
---|
913 | //-- propagate pvs or pvs size information
|
---|
914 | ObjectPvs pvs;
|
---|
915 | UpdatePvsForEvaluation(mViewCellsTree->GetRoot(), pvs);
|
---|
916 |
|
---|
917 | //-- output stats
|
---|
918 | sprintf(str, "-%09d-eval.log", castSamples);
|
---|
919 | string fileName = string(statsPrefix) + string(str);
|
---|
920 |
|
---|
921 | mViewCellsTree->ExportStats(fileName);
|
---|
922 |
|
---|
923 | timeDiff = TimeDiff(startTime, GetTime());
|
---|
924 | cout << "finished in " << timeDiff * 1e-3 << " secs" << endl;
|
---|
925 | Debug << "statistis compted in " << timeDiff * 1e-3 << " secs" << endl;
|
---|
926 |
|
---|
927 | disposeRays(evaluationSamples, NULL);
|
---|
928 | }
|
---|
929 |
|
---|
930 |
|
---|
931 | ////////////
|
---|
932 | //-- histogram
|
---|
933 |
|
---|
934 | bool useHisto;
|
---|
935 | int histoStepSize;
|
---|
936 |
|
---|
937 | Environment::GetSingleton()->GetBoolValue("ViewCells.Evaluation.histogram", useHisto);
|
---|
938 | Environment::GetSingleton()->GetIntValue("ViewCells.Evaluation.histoStepSize", histoStepSize);
|
---|
939 |
|
---|
940 | const int numLeaves = mViewCellsTree->GetNumInitialViewCells(mViewCellsTree->GetRoot());
|
---|
941 |
|
---|
942 |
|
---|
943 | if (useHisto)
|
---|
944 | {
|
---|
945 | // evaluate view cells in a histogram
|
---|
946 | char s[64];
|
---|
947 |
|
---|
948 | for (int pass = histoStepSize; pass <= numLeaves; pass += histoStepSize)
|
---|
949 | {
|
---|
950 | string filename;
|
---|
951 |
|
---|
952 | cout << "computing histogram for " << pass << " view cells" << endl;
|
---|
953 | #if 0
|
---|
954 | //-- evaluate histogram for render cost
|
---|
955 | sprintf(s, "-%09d-histo.log", pass);
|
---|
956 | filename = string(statsPrefix) + string(s);
|
---|
957 |
|
---|
958 | EvalViewCellHistogram(filename, pass);
|
---|
959 |
|
---|
960 | #endif
|
---|
961 | //////////////////////////////////////////
|
---|
962 | //-- evaluate histogram for pvs size
|
---|
963 |
|
---|
964 | cout << "computing pvs histogram for " << pass << " view cells" << endl;
|
---|
965 |
|
---|
966 | sprintf(s, "-%09d-histo-pvs.log", pass);
|
---|
967 | filename = string(statsPrefix) + string(s);
|
---|
968 |
|
---|
969 | EvalViewCellHistogramForPvsSize(filename, pass);
|
---|
970 | }
|
---|
971 | }
|
---|
972 | }
|
---|
973 |
|
---|
974 |
|
---|
975 | inline float EvalMergeCost(ViewCell *root, ViewCell *candidate)
|
---|
976 | {
|
---|
977 | return root->GetPvs().GetPvsHomogenity(candidate->GetPvs());
|
---|
978 | }
|
---|
979 |
|
---|
980 |
|
---|
981 | /// Returns index of the best view cells of the neighborhood
|
---|
982 | int GetBestViewCellIdx(ViewCell *root, const ViewCellContainer &neighborhood)
|
---|
983 | {
|
---|
984 | int bestViewCellIdx = 0;
|
---|
985 |
|
---|
986 | float mergeCost = Limits::Infinity;
|
---|
987 | int i = 0;
|
---|
988 |
|
---|
989 | ViewCellContainer::const_iterator vit, vit_end = neighborhood.end();
|
---|
990 |
|
---|
991 | for (vit = neighborhood.begin(); vit != vit_end; ++ vit, ++ i)
|
---|
992 | {
|
---|
993 | const float mc = EvalMergeCost(root, *vit);
|
---|
994 |
|
---|
995 | if (mc < mergeCost)
|
---|
996 | {
|
---|
997 | mergeCost = mc;
|
---|
998 | bestViewCellIdx = i;
|
---|
999 | }
|
---|
1000 | }
|
---|
1001 |
|
---|
1002 | return bestViewCellIdx;
|
---|
1003 | }
|
---|
1004 |
|
---|
1005 |
|
---|
1006 | void ViewCellsManager::SetMaxFilterSize(const int size)
|
---|
1007 | {
|
---|
1008 | mMaxFilterSize = size;
|
---|
1009 | }
|
---|
1010 |
|
---|
1011 |
|
---|
1012 | float ViewCellsManager::EvalRenderCost(Intersectable *obj) const
|
---|
1013 | {
|
---|
1014 | switch (mRenderCostEvaluationType)
|
---|
1015 | {
|
---|
1016 | case PER_OBJECT:
|
---|
1017 | //cout << "perobject" << endl;
|
---|
1018 | return 1.0f;
|
---|
1019 |
|
---|
1020 | case PER_TRIANGLE:
|
---|
1021 | {//cout << "pertriangle" << endl;
|
---|
1022 | // HACK
|
---|
1023 | MeshInstance *mi = dynamic_cast<MeshInstance *>(obj);
|
---|
1024 |
|
---|
1025 | // HACK: assume meshes are triangles
|
---|
1026 | if (mi->GetMesh())
|
---|
1027 | {
|
---|
1028 | return (float)mi->GetMesh()->mFaces.size();
|
---|
1029 | }
|
---|
1030 | }
|
---|
1031 | default:
|
---|
1032 | cout << "default" << endl;
|
---|
1033 | return 1.0f;
|
---|
1034 | }
|
---|
1035 |
|
---|
1036 | // should not come here
|
---|
1037 | return 0.0f;
|
---|
1038 | }
|
---|
1039 |
|
---|
1040 |
|
---|
1041 | ViewCell *ViewCellsManager::ConstructLocalMergeTree(ViewCell *currentViewCell,
|
---|
1042 | const ViewCellContainer &viewCells)
|
---|
1043 | {
|
---|
1044 | ViewCell *root = currentViewCell;
|
---|
1045 | ViewCellContainer neighborhood = viewCells;
|
---|
1046 |
|
---|
1047 | ViewCellContainer::const_iterator it, it_end = neighborhood.end();
|
---|
1048 |
|
---|
1049 | const int n = min(mMaxFilterSize, (int)neighborhood.size());
|
---|
1050 |
|
---|
1051 | /////////////////
|
---|
1052 | //-- use priority queue to merge leaf pairs
|
---|
1053 |
|
---|
1054 | for (int nMergedViewCells = 0; nMergedViewCells < n; ++ nMergedViewCells)
|
---|
1055 | {
|
---|
1056 | const int bestViewCellIdx = GetBestViewCellIdx(root, neighborhood);
|
---|
1057 |
|
---|
1058 | ViewCell *bestViewCell = neighborhood[bestViewCellIdx];
|
---|
1059 |
|
---|
1060 | // remove from vector
|
---|
1061 | swap(neighborhood[bestViewCellIdx], neighborhood.back());
|
---|
1062 | neighborhood.pop_back();
|
---|
1063 |
|
---|
1064 | if (!bestViewCell || !root)
|
---|
1065 | cout << "warning!!" << endl;
|
---|
1066 |
|
---|
1067 | // create new root of the hierarchy
|
---|
1068 | root = MergeViewCells(root, bestViewCell);
|
---|
1069 | }
|
---|
1070 |
|
---|
1071 | return root;
|
---|
1072 | }
|
---|
1073 |
|
---|
1074 |
|
---|
1075 | struct SortableViewCellEntry {
|
---|
1076 |
|
---|
1077 | SortableViewCellEntry() {}
|
---|
1078 | SortableViewCellEntry(const float v, ViewCell *cell):mValue(v), mViewCell(cell) {}
|
---|
1079 |
|
---|
1080 | float mValue;
|
---|
1081 | ViewCell *mViewCell;
|
---|
1082 |
|
---|
1083 | friend bool operator<(const SortableViewCellEntry &a, const SortableViewCellEntry &b) {
|
---|
1084 | return a.mValue < b.mValue;
|
---|
1085 | }
|
---|
1086 | };
|
---|
1087 |
|
---|
1088 |
|
---|
1089 | ViewCell * ViewCellsManager::ConstructLocalMergeTree2(ViewCell *currentViewCell,
|
---|
1090 | const ViewCellContainer &viewCells)
|
---|
1091 | {
|
---|
1092 |
|
---|
1093 | vector<SortableViewCellEntry> neighborhood(viewCells.size());
|
---|
1094 | int i, j;
|
---|
1095 | for (i = 0, j = 0; i < viewCells.size(); i++) {
|
---|
1096 | if (viewCells[i] != currentViewCell)
|
---|
1097 | neighborhood[j++] = SortableViewCellEntry(
|
---|
1098 | EvalMergeCost(currentViewCell, viewCells[i]),
|
---|
1099 | viewCells[i]);
|
---|
1100 | }
|
---|
1101 | neighborhood.resize(j);
|
---|
1102 |
|
---|
1103 | sort(neighborhood.begin(), neighborhood.end());
|
---|
1104 |
|
---|
1105 | ViewCell *root = currentViewCell;
|
---|
1106 |
|
---|
1107 | vector<SortableViewCellEntry>::const_iterator it, it_end = neighborhood.end();
|
---|
1108 |
|
---|
1109 | const int n = min(mMaxFilterSize, (int)neighborhood.size());
|
---|
1110 | //-- use priority queue to merge leaf pairs
|
---|
1111 |
|
---|
1112 | //cout << "neighborhood: " << neighborhood.size() << endl;
|
---|
1113 | for (int nMergedViewCells = 0; nMergedViewCells < n; ++ nMergedViewCells)
|
---|
1114 | {
|
---|
1115 | ViewCell *bestViewCell = neighborhood[nMergedViewCells].mViewCell;
|
---|
1116 | //cout <<nMergedViewCells<<":"<<"homogenity=" <<neighborhood[nMergedViewCells].mValue<<endl;
|
---|
1117 | // create new root of the hierarchy
|
---|
1118 | root = MergeViewCells(root, bestViewCell);
|
---|
1119 | // set negative cost so that this view cell gets deleted
|
---|
1120 | root->SetMergeCost(-1.0f);
|
---|
1121 | }
|
---|
1122 |
|
---|
1123 | return root;
|
---|
1124 | }
|
---|
1125 |
|
---|
1126 | void
|
---|
1127 | ViewCellsManager::DeleteLocalMergeTree(ViewCell *vc
|
---|
1128 | ) const
|
---|
1129 | {
|
---|
1130 | if (!vc->IsLeaf() && vc->GetMergeCost() < 0.0f) {
|
---|
1131 | ViewCellInterior *vci = (ViewCellInterior *) vc;
|
---|
1132 | ViewCellContainer::const_iterator it, it_end = vci->mChildren.end();
|
---|
1133 |
|
---|
1134 | for (it = vci->mChildren.begin(); it != it_end; ++ it)
|
---|
1135 | DeleteLocalMergeTree(*it);
|
---|
1136 | vci->mChildren.clear();
|
---|
1137 | delete vci;
|
---|
1138 | }
|
---|
1139 | }
|
---|
1140 |
|
---|
1141 |
|
---|
1142 | bool ViewCellsManager::CheckValidity(ViewCell *vc,
|
---|
1143 | int minPvsSize,
|
---|
1144 | int maxPvsSize) const
|
---|
1145 | {
|
---|
1146 |
|
---|
1147 | if ((vc->GetPvs().CountObjectsInPvs() > maxPvsSize) ||
|
---|
1148 | (vc->GetPvs().CountObjectsInPvs() < minPvsSize))
|
---|
1149 | {
|
---|
1150 | return false;
|
---|
1151 | }
|
---|
1152 |
|
---|
1153 | return true;
|
---|
1154 | }
|
---|
1155 |
|
---|
1156 |
|
---|
1157 | int ViewCellsManager::ComputeBoxIntersections(const AxisAlignedBox3 &box,
|
---|
1158 | ViewCellContainer &viewCells) const
|
---|
1159 | {
|
---|
1160 | return 0;
|
---|
1161 | };
|
---|
1162 |
|
---|
1163 |
|
---|
1164 | AxisAlignedBox3 ViewCellsManager::GetFilterBBox(const Vector3 &viewPoint,
|
---|
1165 | const float width) const
|
---|
1166 | {
|
---|
1167 | float w = Magnitude(mViewSpaceBox.Size())*width;
|
---|
1168 | Vector3 min = viewPoint - w * 0.5f;
|
---|
1169 | Vector3 max = viewPoint + w * 0.5f;
|
---|
1170 |
|
---|
1171 | return AxisAlignedBox3(min, max);
|
---|
1172 | }
|
---|
1173 |
|
---|
1174 |
|
---|
1175 | void ViewCellsManager::GetPrVS(const Vector3 &viewPoint,
|
---|
1176 | PrVs &prvs,
|
---|
1177 | const float filterWidth)
|
---|
1178 | {
|
---|
1179 | ViewCell *currentViewCell = GetViewCell(viewPoint);
|
---|
1180 |
|
---|
1181 | if (mMaxFilterSize < 1) {
|
---|
1182 | prvs.mViewCell = currentViewCell;
|
---|
1183 | return;
|
---|
1184 | }
|
---|
1185 |
|
---|
1186 | const AxisAlignedBox3 box = GetFilterBBox(viewPoint, filterWidth);
|
---|
1187 |
|
---|
1188 | if (currentViewCell)
|
---|
1189 | {
|
---|
1190 | ViewCellContainer viewCells;
|
---|
1191 | ComputeBoxIntersections(box, viewCells);
|
---|
1192 |
|
---|
1193 | ViewCell *root = ConstructLocalMergeTree2(currentViewCell, viewCells);
|
---|
1194 | prvs.mViewCell = root;
|
---|
1195 |
|
---|
1196 | }
|
---|
1197 | else
|
---|
1198 | {
|
---|
1199 | prvs.mViewCell = NULL;
|
---|
1200 | //prvs.mPvs = root->GetPvs();
|
---|
1201 | }
|
---|
1202 | }
|
---|
1203 |
|
---|
1204 |
|
---|
1205 | bool ViewCellsManager::ViewCellsTreeConstructed() const
|
---|
1206 | {
|
---|
1207 | return (mViewCellsTree && mViewCellsTree->GetRoot());
|
---|
1208 | }
|
---|
1209 |
|
---|
1210 |
|
---|
1211 | void ViewCellsManager::SetValidity(ViewCell *vc,
|
---|
1212 | int minPvs,
|
---|
1213 | int maxPvs) const
|
---|
1214 | {
|
---|
1215 | vc->SetValid(CheckValidity(vc, minPvs, maxPvs));
|
---|
1216 | }
|
---|
1217 |
|
---|
1218 |
|
---|
1219 | void
|
---|
1220 | ViewCellsManager::SetValidity(
|
---|
1221 | int minPvsSize,
|
---|
1222 | int maxPvsSize) const
|
---|
1223 | {
|
---|
1224 | ViewCellContainer::const_iterator it, it_end = mViewCells.end();
|
---|
1225 |
|
---|
1226 |
|
---|
1227 | for (it = mViewCells.begin(); it != it_end; ++ it)
|
---|
1228 | {
|
---|
1229 | SetValidity(*it, minPvsSize, maxPvsSize);
|
---|
1230 | }
|
---|
1231 | }
|
---|
1232 |
|
---|
1233 | void
|
---|
1234 | ViewCellsManager::SetValidityPercentage(
|
---|
1235 | const float minValid,
|
---|
1236 | const float maxValid
|
---|
1237 | )
|
---|
1238 | {
|
---|
1239 | sort(mViewCells.begin(), mViewCells.end(), ViewCell::SmallerPvs);
|
---|
1240 |
|
---|
1241 | int start = (int)(mViewCells.size() * minValid);
|
---|
1242 | int end = (int)(mViewCells.size() * maxValid);
|
---|
1243 |
|
---|
1244 | for (int i = 0; i < (int)mViewCells.size(); ++ i)
|
---|
1245 | {
|
---|
1246 | mViewCells[i]->SetValid(i >= start && i <= end);
|
---|
1247 | }
|
---|
1248 | }
|
---|
1249 |
|
---|
1250 |
|
---|
1251 | int ViewCellsManager::CountValidViewcells() const
|
---|
1252 | {
|
---|
1253 | ViewCellContainer::const_iterator it, it_end = mViewCells.end();
|
---|
1254 | int valid = 0;
|
---|
1255 |
|
---|
1256 | for (it = mViewCells.begin(); it != it_end; ++ it)
|
---|
1257 | {
|
---|
1258 | if ((*it)->GetValid())
|
---|
1259 | ++ valid;
|
---|
1260 | }
|
---|
1261 |
|
---|
1262 | return valid;
|
---|
1263 | }
|
---|
1264 |
|
---|
1265 |
|
---|
1266 | bool ViewCellsManager::LoadViewCellsGeometry(const string filename,
|
---|
1267 | const bool extrudeBaseTriangles)
|
---|
1268 | {
|
---|
1269 | /// we use predefined view cells from now on
|
---|
1270 | mUsePredefinedViewCells = true;
|
---|
1271 | X3dParser parser;
|
---|
1272 |
|
---|
1273 | if (extrudeBaseTriangles)
|
---|
1274 | {
|
---|
1275 | Environment::GetSingleton()->GetFloatValue("ViewCells.height", parser.mViewCellHeight);
|
---|
1276 | const bool success = parser.ParseFile(filename, *this);
|
---|
1277 |
|
---|
1278 | if (!success)
|
---|
1279 | return false;
|
---|
1280 | }
|
---|
1281 | else
|
---|
1282 | {
|
---|
1283 | // hack: use standard mesh loading
|
---|
1284 | // create temporary scene graph for loading the view cells geometry
|
---|
1285 | // note: delete the meshes as they are created two times for transformed mesh instances.
|
---|
1286 | SceneGraphNode *root = new SceneGraphNode();
|
---|
1287 | const bool success = parser.ParseFile(filename, root, true);
|
---|
1288 |
|
---|
1289 | if (!success)
|
---|
1290 | {
|
---|
1291 | DEL_PTR(root);
|
---|
1292 | return false;
|
---|
1293 | }
|
---|
1294 |
|
---|
1295 | ObjectContainer::const_iterator oit, oit_end = root->mGeometry.end();
|
---|
1296 |
|
---|
1297 | for (oit = root->mGeometry.begin(); oit != oit_end; ++ oit)
|
---|
1298 | {
|
---|
1299 | Mesh *mesh;
|
---|
1300 | if ((*oit)->Type() == Intersectable::TRANSFORMED_MESH_INSTANCE)
|
---|
1301 | {
|
---|
1302 | TransformedMeshInstance *mit = dynamic_cast<TransformedMeshInstance *>(*oit);
|
---|
1303 | mesh = MeshManager::GetSingleton()->CreateResource();
|
---|
1304 | mit->GetTransformedMesh(*mesh);
|
---|
1305 | }
|
---|
1306 | else if ((*oit)->Type() == Intersectable::MESH_INSTANCE)
|
---|
1307 | {
|
---|
1308 | MeshInstance *mit = dynamic_cast<MeshInstance *>(*oit);
|
---|
1309 | mesh = mit->GetMesh();
|
---|
1310 | }
|
---|
1311 | mesh->ComputeBoundingBox();
|
---|
1312 | mViewCells.push_back(GenerateViewCell(mesh));
|
---|
1313 | }
|
---|
1314 |
|
---|
1315 | DEL_PTR(root);
|
---|
1316 | }
|
---|
1317 |
|
---|
1318 | // set view space box to bounding box of the view cells
|
---|
1319 | AxisAlignedBox3 bbox;
|
---|
1320 | bbox.Initialize();
|
---|
1321 | ViewCellContainer::iterator it = mViewCells.begin(), it_end = mViewCells.end();
|
---|
1322 |
|
---|
1323 | for (; it != it_end; ++ it)
|
---|
1324 | {
|
---|
1325 | bbox.Include((*it)->GetMesh()->mBox);
|
---|
1326 | }
|
---|
1327 |
|
---|
1328 | SetViewSpaceBox(bbox);
|
---|
1329 | cout << "view space box: " << bbox << endl;
|
---|
1330 | cout << "generated " << (int)mViewCells.size() << " view cells using the geometry " << filename << endl;
|
---|
1331 |
|
---|
1332 | return true;
|
---|
1333 | }
|
---|
1334 |
|
---|
1335 |
|
---|
1336 | bool ViewCellsManager::GetViewPoint(Vector3 &viewPoint) const
|
---|
1337 | {
|
---|
1338 | viewPoint = mViewSpaceBox.GetRandomPoint();
|
---|
1339 | return true;
|
---|
1340 | }
|
---|
1341 |
|
---|
1342 |
|
---|
1343 | float ViewCellsManager::GetViewSpaceVolume()
|
---|
1344 | {
|
---|
1345 | return mViewSpaceBox.GetVolume() * (2.0f * sqr((float)M_PI));
|
---|
1346 | }
|
---|
1347 |
|
---|
1348 |
|
---|
1349 | bool ViewCellsManager::ViewPointValid(const Vector3 &viewPoint) const
|
---|
1350 | {
|
---|
1351 | if (!ViewCellsConstructed())
|
---|
1352 | {
|
---|
1353 | return mViewSpaceBox.IsInside(viewPoint);
|
---|
1354 | }
|
---|
1355 | else
|
---|
1356 | {
|
---|
1357 | if (!mViewSpaceBox.IsInside(viewPoint))
|
---|
1358 | return false;
|
---|
1359 |
|
---|
1360 | ViewCell *viewcell = GetViewCell(viewPoint);
|
---|
1361 |
|
---|
1362 | if (!viewcell || !viewcell->GetValid())
|
---|
1363 | return false;
|
---|
1364 | }
|
---|
1365 |
|
---|
1366 | return true;
|
---|
1367 | }
|
---|
1368 |
|
---|
1369 |
|
---|
1370 | float ViewCellsManager::ComputeSampleContributions(const VssRayContainer &rays,
|
---|
1371 | const bool addRays,
|
---|
1372 | const bool storeViewCells)
|
---|
1373 | {
|
---|
1374 | // view cells not yet constructed
|
---|
1375 | if (!ViewCellsConstructed())
|
---|
1376 | return 0.0f;
|
---|
1377 |
|
---|
1378 | float sum = 0.0f;
|
---|
1379 | VssRayContainer::const_iterator it, it_end = rays.end();
|
---|
1380 |
|
---|
1381 | for (it = rays.begin(); it != it_end; ++ it)
|
---|
1382 | {
|
---|
1383 | sum += ComputeSampleContribution(*(*it), addRays, storeViewCells);
|
---|
1384 | }
|
---|
1385 |
|
---|
1386 | return sum;
|
---|
1387 | }
|
---|
1388 |
|
---|
1389 |
|
---|
1390 | void ViewCellsManager::EvaluateViewCellsStats()
|
---|
1391 | {
|
---|
1392 | mCurrentViewCellsStats.Reset();
|
---|
1393 | ViewCellContainer::const_iterator it, it_end = mViewCells.end();
|
---|
1394 |
|
---|
1395 | for (it = mViewCells.begin(); it != it_end; ++ it)
|
---|
1396 | {
|
---|
1397 | mViewCellsTree->UpdateViewCellsStats(*it, mCurrentViewCellsStats);
|
---|
1398 | }
|
---|
1399 | }
|
---|
1400 |
|
---|
1401 |
|
---|
1402 | void ViewCellsManager::EvaluateRenderStatistics(float &totalRenderCost,
|
---|
1403 | float &expectedRenderCost,
|
---|
1404 | float &deviation,
|
---|
1405 | float &variance,
|
---|
1406 | int &totalPvs,
|
---|
1407 | float &avgRenderCost)
|
---|
1408 | {
|
---|
1409 | ////////////
|
---|
1410 | //-- compute expected value
|
---|
1411 |
|
---|
1412 | totalRenderCost = 0;
|
---|
1413 | totalPvs = 0;
|
---|
1414 |
|
---|
1415 | ViewCellContainer::const_iterator it, it_end = mViewCells.end();
|
---|
1416 |
|
---|
1417 | for (it = mViewCells.begin(); it != it_end; ++ it)
|
---|
1418 | {
|
---|
1419 | ViewCell *vc = *it;
|
---|
1420 | totalRenderCost += vc->GetPvs().CountObjectsInPvs() * vc->GetVolume();
|
---|
1421 | totalPvs += (int)vc->GetPvs().CountObjectsInPvs();
|
---|
1422 | }
|
---|
1423 |
|
---|
1424 | // normalize with view space box
|
---|
1425 | totalRenderCost /= mViewSpaceBox.GetVolume();
|
---|
1426 | expectedRenderCost = totalRenderCost / (float)mViewCells.size();
|
---|
1427 | avgRenderCost = totalPvs / (float)mViewCells.size();
|
---|
1428 |
|
---|
1429 |
|
---|
1430 | ///////////
|
---|
1431 | //-- compute standard defiation
|
---|
1432 |
|
---|
1433 | variance = 0;
|
---|
1434 | deviation = 0;
|
---|
1435 |
|
---|
1436 | for (it = mViewCells.begin(); it != it_end; ++ it)
|
---|
1437 | {
|
---|
1438 | ViewCell *vc = *it;
|
---|
1439 |
|
---|
1440 | float renderCost = vc->GetPvs().CountObjectsInPvs() * vc->GetVolume();
|
---|
1441 | float dev;
|
---|
1442 |
|
---|
1443 | if (1)
|
---|
1444 | dev = fabs(avgRenderCost - (float)vc->GetPvs().CountObjectsInPvs());
|
---|
1445 | else
|
---|
1446 | dev = fabs(expectedRenderCost - renderCost);
|
---|
1447 |
|
---|
1448 | deviation += dev;
|
---|
1449 | variance += dev * dev;
|
---|
1450 | }
|
---|
1451 |
|
---|
1452 | variance /= (float)mViewCells.size();
|
---|
1453 | deviation /= (float)mViewCells.size();
|
---|
1454 | }
|
---|
1455 |
|
---|
1456 |
|
---|
1457 | float ViewCellsManager::GetArea(ViewCell *viewCell) const
|
---|
1458 | {
|
---|
1459 | return viewCell->GetArea();
|
---|
1460 | }
|
---|
1461 |
|
---|
1462 |
|
---|
1463 | float ViewCellsManager::GetVolume(ViewCell *viewCell) const
|
---|
1464 | {
|
---|
1465 | return viewCell->GetVolume();
|
---|
1466 | }
|
---|
1467 |
|
---|
1468 |
|
---|
1469 | ViewCell *ViewCellsManager::ExtrudeViewCell(const Triangle3 &baseTri,
|
---|
1470 | const float height) const
|
---|
1471 | {
|
---|
1472 | // one mesh per view cell
|
---|
1473 | Mesh *mesh = MeshManager::GetSingleton()->CreateResource();
|
---|
1474 |
|
---|
1475 | ////////////
|
---|
1476 | //-- construct prism
|
---|
1477 |
|
---|
1478 | // bottom
|
---|
1479 | mesh->mFaces.push_back(new Face(2,1,0));
|
---|
1480 | // top
|
---|
1481 | mesh->mFaces.push_back(new Face(3,4,5));
|
---|
1482 | // sides
|
---|
1483 | mesh->mFaces.push_back(new Face(1, 4, 3, 0));
|
---|
1484 | mesh->mFaces.push_back(new Face(2, 5, 4, 1));
|
---|
1485 | mesh->mFaces.push_back(new Face(3, 5, 2, 0));
|
---|
1486 |
|
---|
1487 |
|
---|
1488 | /////////////
|
---|
1489 | //-- extrude new vertices for top of prism
|
---|
1490 |
|
---|
1491 | Vector3 triNorm = baseTri.GetNormal();
|
---|
1492 | Triangle3 topTri;
|
---|
1493 |
|
---|
1494 | // add base vertices and calculate top vertices
|
---|
1495 | for (int i = 0; i < 3; ++ i)
|
---|
1496 | {
|
---|
1497 | mesh->mVertices.push_back(baseTri.mVertices[i]);
|
---|
1498 | }
|
---|
1499 |
|
---|
1500 | // add top vertices
|
---|
1501 | for (int i = 0; i < 3; ++ i)
|
---|
1502 | {
|
---|
1503 | mesh->mVertices.push_back(baseTri.mVertices[i] + height * triNorm);
|
---|
1504 | }
|
---|
1505 |
|
---|
1506 | // do we have to preprocess this mesh (we don't want to trace view cells!)?
|
---|
1507 | mesh->ComputeBoundingBox();
|
---|
1508 |
|
---|
1509 | return GenerateViewCell(mesh);
|
---|
1510 | }
|
---|
1511 |
|
---|
1512 |
|
---|
1513 | void ViewCellsManager::FinalizeViewCells(const bool createMesh)
|
---|
1514 | {
|
---|
1515 | ViewCellContainer::const_iterator it, it_end = mViewCells.end();
|
---|
1516 |
|
---|
1517 | // volume and area of the view cells are recomputed and a view cell mesh is created
|
---|
1518 | for (it = mViewCells.begin(); it != it_end; ++ it)
|
---|
1519 | {
|
---|
1520 | Finalize(*it, createMesh);
|
---|
1521 | }
|
---|
1522 |
|
---|
1523 | mTotalAreaValid = false;
|
---|
1524 | }
|
---|
1525 |
|
---|
1526 |
|
---|
1527 | void ViewCellsManager::Finalize(ViewCell *viewCell, const bool createMesh)
|
---|
1528 | {
|
---|
1529 | // implemented in subclasses
|
---|
1530 | }
|
---|
1531 |
|
---|
1532 |
|
---|
1533 | /** fast way of merging 2 view cells.
|
---|
1534 | */
|
---|
1535 | ViewCellInterior *ViewCellsManager::MergeViewCells(ViewCell *left, ViewCell *right) const
|
---|
1536 | {
|
---|
1537 | // generate parent view cell
|
---|
1538 | ViewCellInterior *vc = new ViewCellInterior();
|
---|
1539 |
|
---|
1540 | vc->GetPvs().Clear();
|
---|
1541 | vc->GetPvs() = left->GetPvs();
|
---|
1542 |
|
---|
1543 | // merge pvs of right cell
|
---|
1544 | vc->GetPvs().Merge(right->GetPvs());
|
---|
1545 |
|
---|
1546 | // set only links to child (not from child to parent, maybe not wished!!)
|
---|
1547 | vc->mChildren.push_back(left);
|
---|
1548 | vc->mChildren.push_back(right);
|
---|
1549 |
|
---|
1550 | // update pvs size
|
---|
1551 | UpdateScalarPvsSize(vc, vc->GetPvs().CountObjectsInPvs(), vc->GetPvs().GetSize());
|
---|
1552 |
|
---|
1553 | return vc;
|
---|
1554 | }
|
---|
1555 |
|
---|
1556 |
|
---|
1557 | ViewCellInterior *ViewCellsManager::MergeViewCells(ViewCellContainer &children) const
|
---|
1558 | {
|
---|
1559 | ViewCellInterior *vc = new ViewCellInterior();
|
---|
1560 |
|
---|
1561 | ViewCellContainer::const_iterator it, it_end = children.end();
|
---|
1562 |
|
---|
1563 | for (it = children.begin(); it != it_end; ++ it)
|
---|
1564 | {
|
---|
1565 | // merge pvs
|
---|
1566 | vc->GetPvs().Merge((*it)->GetPvs());
|
---|
1567 | vc->mChildren.push_back(*it);
|
---|
1568 | }
|
---|
1569 |
|
---|
1570 | return vc;
|
---|
1571 | }
|
---|
1572 |
|
---|
1573 |
|
---|
1574 | void ViewCellsManager::SetRenderer(Renderer *renderer)
|
---|
1575 | {
|
---|
1576 | mRenderer = renderer;
|
---|
1577 | }
|
---|
1578 |
|
---|
1579 |
|
---|
1580 | ViewCellsTree *ViewCellsManager::GetViewCellsTree()
|
---|
1581 | {
|
---|
1582 | return mViewCellsTree;
|
---|
1583 | }
|
---|
1584 |
|
---|
1585 |
|
---|
1586 | void ViewCellsManager::SetVisualizationSamples(const int visSamples)
|
---|
1587 | {
|
---|
1588 | mVisualizationSamples = visSamples;
|
---|
1589 | }
|
---|
1590 |
|
---|
1591 |
|
---|
1592 | void ViewCellsManager::SetConstructionSamples(const int constructionSamples)
|
---|
1593 | {
|
---|
1594 | mConstructionSamples = constructionSamples;
|
---|
1595 | }
|
---|
1596 |
|
---|
1597 |
|
---|
1598 | void ViewCellsManager::SetInitialSamples(const int initialSamples)
|
---|
1599 | {
|
---|
1600 | mInitialSamples = initialSamples;
|
---|
1601 | }
|
---|
1602 |
|
---|
1603 |
|
---|
1604 | void ViewCellsManager::SetPostProcessSamples(const int postProcessSamples)
|
---|
1605 | {
|
---|
1606 | mPostProcessSamples = postProcessSamples;
|
---|
1607 | }
|
---|
1608 |
|
---|
1609 |
|
---|
1610 | int ViewCellsManager::GetVisualizationSamples() const
|
---|
1611 | {
|
---|
1612 | return mVisualizationSamples;
|
---|
1613 | }
|
---|
1614 |
|
---|
1615 |
|
---|
1616 | int ViewCellsManager::GetConstructionSamples() const
|
---|
1617 | {
|
---|
1618 | return mConstructionSamples;
|
---|
1619 | }
|
---|
1620 |
|
---|
1621 |
|
---|
1622 | int ViewCellsManager::GetPostProcessSamples() const
|
---|
1623 | {
|
---|
1624 | return mPostProcessSamples;
|
---|
1625 | }
|
---|
1626 |
|
---|
1627 |
|
---|
1628 | void ViewCellsManager::UpdatePvs()
|
---|
1629 | {
|
---|
1630 | if (mViewCellPvsIsUpdated || !ViewCellsTreeConstructed())
|
---|
1631 | return;
|
---|
1632 |
|
---|
1633 | mViewCellPvsIsUpdated = true;
|
---|
1634 |
|
---|
1635 | ViewCellContainer leaves;
|
---|
1636 | mViewCellsTree->CollectLeaves(mViewCellsTree->GetRoot(), leaves);
|
---|
1637 |
|
---|
1638 | ViewCellContainer::const_iterator it, it_end = leaves.end();
|
---|
1639 |
|
---|
1640 | for (it = leaves.begin(); it != it_end; ++ it)
|
---|
1641 | {
|
---|
1642 | mViewCellsTree->PropagatePvs(*it);
|
---|
1643 | }
|
---|
1644 | }
|
---|
1645 |
|
---|
1646 |
|
---|
1647 | void ViewCellsManager::GetPvsStatistics(PvsStatistics &stat)
|
---|
1648 | {
|
---|
1649 | // update pvs of view cells tree if necessary
|
---|
1650 | UpdatePvs();
|
---|
1651 |
|
---|
1652 | ViewCellContainer::const_iterator it = mViewCells.begin();
|
---|
1653 |
|
---|
1654 | stat.viewcells = 0;
|
---|
1655 | stat.minPvs = 100000000;
|
---|
1656 | stat.maxPvs = 0;
|
---|
1657 | stat.avgPvs = 0.0f;
|
---|
1658 |
|
---|
1659 | for (; it != mViewCells.end(); ++ it)
|
---|
1660 | {
|
---|
1661 | ViewCell *viewcell = *it;
|
---|
1662 |
|
---|
1663 | // bool mCountKdPvs = false;
|
---|
1664 | const int pvsSize = mViewCellsTree->GetPvsSize(viewcell);
|
---|
1665 |
|
---|
1666 |
|
---|
1667 | if (pvsSize < stat.minPvs)
|
---|
1668 | stat.minPvs = pvsSize;
|
---|
1669 | if (pvsSize > stat.maxPvs)
|
---|
1670 | stat.maxPvs = pvsSize;
|
---|
1671 |
|
---|
1672 | stat.avgPvs += pvsSize;
|
---|
1673 |
|
---|
1674 | ++ stat.viewcells;
|
---|
1675 | }
|
---|
1676 |
|
---|
1677 | if (stat.viewcells)
|
---|
1678 | stat.avgPvs/=stat.viewcells;
|
---|
1679 | }
|
---|
1680 |
|
---|
1681 |
|
---|
1682 | void ViewCellsManager::PrintPvsStatistics(ostream &s)
|
---|
1683 | {
|
---|
1684 | s<<"############# Viewcell PVS STAT ##################\n";
|
---|
1685 | PvsStatistics pvsStat;
|
---|
1686 | GetPvsStatistics(pvsStat);
|
---|
1687 | s<<"#AVG_PVS\n"<<pvsStat.avgPvs<<endl;
|
---|
1688 | s<<"#MAX_PVS\n"<<pvsStat.maxPvs<<endl;
|
---|
1689 | s<<"#MIN_PVS\n"<<pvsStat.minPvs<<endl;
|
---|
1690 | }
|
---|
1691 |
|
---|
1692 |
|
---|
1693 | int ViewCellsManager::CastBeam(Beam &beam)
|
---|
1694 | {
|
---|
1695 | return 0;
|
---|
1696 | }
|
---|
1697 |
|
---|
1698 |
|
---|
1699 | ViewCellContainer &ViewCellsManager::GetViewCells()
|
---|
1700 | {
|
---|
1701 | return mViewCells;
|
---|
1702 | }
|
---|
1703 |
|
---|
1704 |
|
---|
1705 | void ViewCellsManager::SetViewSpaceBox(const AxisAlignedBox3 &box)
|
---|
1706 | {
|
---|
1707 | mViewSpaceBox = box;
|
---|
1708 |
|
---|
1709 | // hack: create clip plane relative to new view space box
|
---|
1710 | CreateClipPlane();
|
---|
1711 | // the total area of the view space has changed
|
---|
1712 | mTotalAreaValid = false;
|
---|
1713 | }
|
---|
1714 |
|
---|
1715 |
|
---|
1716 | void ViewCellsManager::CreateClipPlane()
|
---|
1717 | {
|
---|
1718 | int axis = 0;
|
---|
1719 | float pos;
|
---|
1720 | bool orientation;
|
---|
1721 | Vector3 absPos;
|
---|
1722 |
|
---|
1723 | Environment::GetSingleton()->GetFloatValue("ViewCells.Visualization.clipPlanePos", pos);
|
---|
1724 | Environment::GetSingleton()->GetIntValue("ViewCells.Visualization.clipPlaneAxis", axis);
|
---|
1725 |
|
---|
1726 | if (axis < 0)
|
---|
1727 | {
|
---|
1728 | axis = -axis;
|
---|
1729 | orientation = false;
|
---|
1730 | absPos = mViewSpaceBox.Max() - mViewSpaceBox.Size() * pos;
|
---|
1731 | }
|
---|
1732 | else
|
---|
1733 | {
|
---|
1734 | orientation = true;
|
---|
1735 | absPos = mViewSpaceBox.Min() + mViewSpaceBox.Size() * pos;
|
---|
1736 | }
|
---|
1737 |
|
---|
1738 | mClipPlaneForViz = AxisAlignedPlane(axis, absPos[axis]);
|
---|
1739 | mClipPlaneForViz.mOrientation = orientation;
|
---|
1740 | }
|
---|
1741 |
|
---|
1742 |
|
---|
1743 | AxisAlignedBox3 ViewCellsManager::GetViewSpaceBox() const
|
---|
1744 | {
|
---|
1745 | return mViewSpaceBox;
|
---|
1746 | }
|
---|
1747 |
|
---|
1748 |
|
---|
1749 | void ViewCellsManager::ResetViewCells()
|
---|
1750 | {
|
---|
1751 | // recollect view cells
|
---|
1752 | mViewCells.clear();
|
---|
1753 | CollectViewCells();
|
---|
1754 |
|
---|
1755 | // stats are computed once more
|
---|
1756 | EvaluateViewCellsStats();
|
---|
1757 |
|
---|
1758 | // has to be recomputed
|
---|
1759 | mTotalAreaValid = false;
|
---|
1760 | }
|
---|
1761 |
|
---|
1762 |
|
---|
1763 | int ViewCellsManager::GetMaxPvsSize() const
|
---|
1764 | {
|
---|
1765 | return mMaxPvsSize;
|
---|
1766 | }
|
---|
1767 |
|
---|
1768 |
|
---|
1769 | void
|
---|
1770 | ViewCellsManager::AddSampleContributions(const VssRayContainer &rays)
|
---|
1771 | {
|
---|
1772 | if (!ViewCellsConstructed())
|
---|
1773 | return;
|
---|
1774 |
|
---|
1775 | VssRayContainer::const_iterator it, it_end = rays.end();
|
---|
1776 |
|
---|
1777 | for (it = rays.begin(); it != it_end; ++ it) {
|
---|
1778 | AddSampleContributions(*(*it));
|
---|
1779 | }
|
---|
1780 | }
|
---|
1781 |
|
---|
1782 |
|
---|
1783 | int ViewCellsManager::GetMinPvsSize() const
|
---|
1784 | {
|
---|
1785 | return mMinPvsSize;
|
---|
1786 | }
|
---|
1787 |
|
---|
1788 |
|
---|
1789 |
|
---|
1790 | float ViewCellsManager::GetMaxPvsRatio() const
|
---|
1791 | {
|
---|
1792 | return mMaxPvsRatio;
|
---|
1793 | }
|
---|
1794 |
|
---|
1795 |
|
---|
1796 | void
|
---|
1797 | ViewCellsManager::AddSampleContributions(VssRay &ray)
|
---|
1798 | {
|
---|
1799 | // assumes viewcells have been stored...
|
---|
1800 | ViewCellContainer *viewcells = &ray.mViewCells;
|
---|
1801 | ViewCellContainer::const_iterator it;
|
---|
1802 | for (it = viewcells->begin(); it != viewcells->end(); ++it) {
|
---|
1803 | ViewCell *viewcell = *it;
|
---|
1804 | if (viewcell->GetValid()) {
|
---|
1805 | // if ray not outside of view space
|
---|
1806 | viewcell->GetPvs().AddSample(ray.mTerminationObject, ray.mPdf);
|
---|
1807 | }
|
---|
1808 | }
|
---|
1809 | }
|
---|
1810 |
|
---|
1811 |
|
---|
1812 | float ViewCellsManager::ComputeSampleContribution(VssRay &ray,
|
---|
1813 | const bool addRays,
|
---|
1814 | const bool storeViewCells)
|
---|
1815 | {
|
---|
1816 | ViewCellContainer viewcells;
|
---|
1817 |
|
---|
1818 | ray.mPvsContribution = 0;
|
---|
1819 | ray.mRelativePvsContribution = 0.0f;
|
---|
1820 |
|
---|
1821 | static Ray hray;
|
---|
1822 | hray.Init(ray);
|
---|
1823 | //hray.mFlags |= Ray::CULL_BACKFACES;
|
---|
1824 | //Ray hray(ray);
|
---|
1825 |
|
---|
1826 | float tmin = 0, tmax = 1.0;
|
---|
1827 |
|
---|
1828 | if (!GetViewSpaceBox().GetRaySegment(hray, tmin, tmax) || (tmin > tmax))
|
---|
1829 | return 0;
|
---|
1830 |
|
---|
1831 | Vector3 origin = hray.Extrap(tmin);
|
---|
1832 | Vector3 termination = hray.Extrap(tmax);
|
---|
1833 |
|
---|
1834 | ViewCell::NewMail();
|
---|
1835 |
|
---|
1836 | // traverse the view space subdivision
|
---|
1837 | CastLineSegment(origin, termination, viewcells);
|
---|
1838 |
|
---|
1839 | if (storeViewCells)
|
---|
1840 | { // copy viewcells memory efficiently
|
---|
1841 | ray.mViewCells.reserve(viewcells.size());
|
---|
1842 | ray.mViewCells = viewcells;
|
---|
1843 | }
|
---|
1844 |
|
---|
1845 | ViewCellContainer::const_iterator it = viewcells.begin();
|
---|
1846 |
|
---|
1847 | for (; it != viewcells.end(); ++ it)
|
---|
1848 | {
|
---|
1849 | ViewCell *viewcell = *it;
|
---|
1850 |
|
---|
1851 | if (viewcell->GetValid()) // tests if view cell is in valid view space
|
---|
1852 | {
|
---|
1853 | float contribution;
|
---|
1854 |
|
---|
1855 | if (ray.mTerminationObject)
|
---|
1856 | {
|
---|
1857 | if (viewcell->GetPvs().GetSampleContribution(
|
---|
1858 | ray.mTerminationObject,
|
---|
1859 | ray.mPdf,
|
---|
1860 | contribution))
|
---|
1861 | {
|
---|
1862 | ++ ray.mPvsContribution;
|
---|
1863 | ray.mRelativePvsContribution += contribution;
|
---|
1864 | }
|
---|
1865 | }
|
---|
1866 |
|
---|
1867 | #if SAMPLE_ORIGIN_OBJECTS
|
---|
1868 |
|
---|
1869 | // for directional sampling it is important to count only contributions
|
---|
1870 | // made in one direction!!!
|
---|
1871 | // the other contributions of this sample will be counted for the oposite ray!
|
---|
1872 |
|
---|
1873 | if (ray.mOriginObject &&
|
---|
1874 | viewcell->GetPvs().GetSampleContribution(ray.mOriginObject,
|
---|
1875 | ray.mPdf,
|
---|
1876 | contribution))
|
---|
1877 | {
|
---|
1878 | ++ ray.mPvsContribution;
|
---|
1879 | ray.mRelativePvsContribution += contribution;
|
---|
1880 | }
|
---|
1881 | #endif
|
---|
1882 | }
|
---|
1883 | }
|
---|
1884 |
|
---|
1885 | // if true, the sampled entities are stored in the pvs
|
---|
1886 | if (addRays)
|
---|
1887 | {
|
---|
1888 | for (it = viewcells.begin(); it != viewcells.end(); ++ it)
|
---|
1889 | {
|
---|
1890 | ViewCell *viewcell = *it;
|
---|
1891 |
|
---|
1892 | if (viewcell->GetValid())
|
---|
1893 | {
|
---|
1894 | // if view point is valid, add new object to the pvs
|
---|
1895 | if (ray.mTerminationObject)
|
---|
1896 | {
|
---|
1897 | viewcell->GetPvs().AddSample(ray.mTerminationObject, ray.mPdf);
|
---|
1898 | }
|
---|
1899 | #if SAMPLE_ORIGIN_OBJECTS
|
---|
1900 | if (ray.mOriginObject)
|
---|
1901 | {
|
---|
1902 | viewcell->GetPvs().AddSample(ray.mOriginObject, ray.mPdf);
|
---|
1903 | }
|
---|
1904 | #endif
|
---|
1905 | }
|
---|
1906 | }
|
---|
1907 | }
|
---|
1908 |
|
---|
1909 | return ray.mRelativePvsContribution;
|
---|
1910 | }
|
---|
1911 |
|
---|
1912 |
|
---|
1913 | void ViewCellsManager::GetRaySets(const VssRayContainer &sourceRays,
|
---|
1914 | const int maxSize,
|
---|
1915 | VssRayContainer &usedRays,
|
---|
1916 | VssRayContainer *savedRays) const
|
---|
1917 | {
|
---|
1918 | const int limit = min(maxSize, (int)sourceRays.size());
|
---|
1919 | const float prop = (float)limit / ((float)sourceRays.size() + Limits::Small);
|
---|
1920 |
|
---|
1921 | VssRayContainer::const_iterator it, it_end = sourceRays.end();
|
---|
1922 | for (it = sourceRays.begin(); it != it_end; ++ it)
|
---|
1923 | {
|
---|
1924 | if (Random(1.0f) < prop)
|
---|
1925 | usedRays.push_back(*it);
|
---|
1926 | else if (savedRays)
|
---|
1927 | savedRays->push_back(*it);
|
---|
1928 | }
|
---|
1929 | }
|
---|
1930 |
|
---|
1931 |
|
---|
1932 | float ViewCellsManager::GetRendercost(ViewCell *viewCell) const
|
---|
1933 | {
|
---|
1934 | return (float)mViewCellsTree->GetPvsSize(viewCell);
|
---|
1935 | }
|
---|
1936 |
|
---|
1937 |
|
---|
1938 | float ViewCellsManager::GetAccVcArea()
|
---|
1939 | {
|
---|
1940 | // if already computed
|
---|
1941 | if (mTotalAreaValid)
|
---|
1942 | {
|
---|
1943 | return mTotalArea;
|
---|
1944 | }
|
---|
1945 |
|
---|
1946 | mTotalArea = 0;
|
---|
1947 | ViewCellContainer::const_iterator it, it_end = mViewCells.end();
|
---|
1948 |
|
---|
1949 | for (it = mViewCells.begin(); it != it_end; ++ it)
|
---|
1950 | {
|
---|
1951 | //Debug << "area: " << GetArea(*it);
|
---|
1952 | mTotalArea += GetArea(*it);
|
---|
1953 | }
|
---|
1954 |
|
---|
1955 | mTotalAreaValid = true;
|
---|
1956 |
|
---|
1957 | return mTotalArea;
|
---|
1958 | }
|
---|
1959 |
|
---|
1960 |
|
---|
1961 | void ViewCellsManager::PrintStatistics(ostream &s) const
|
---|
1962 | {
|
---|
1963 | s << mCurrentViewCellsStats << endl;
|
---|
1964 | }
|
---|
1965 |
|
---|
1966 |
|
---|
1967 | void ViewCellsManager::CreateUniqueViewCellIds()
|
---|
1968 | {
|
---|
1969 | if (ViewCellsTreeConstructed())
|
---|
1970 | {
|
---|
1971 | mViewCellsTree->CreateUniqueViewCellsIds();
|
---|
1972 | }
|
---|
1973 | else // no view cells tree, handle view cells "myself"
|
---|
1974 | {
|
---|
1975 | int i = 0;
|
---|
1976 | ViewCellContainer::const_iterator vit, vit_end = mViewCells.end();
|
---|
1977 | for (vit = mViewCells.begin(); vit != vit_end; ++ vit)
|
---|
1978 | {
|
---|
1979 | if ((*vit)->GetId() != OUT_OF_BOUNDS_ID)
|
---|
1980 | {
|
---|
1981 | mViewCells[i]->SetId(i ++);
|
---|
1982 | }
|
---|
1983 | }
|
---|
1984 | }
|
---|
1985 | }
|
---|
1986 |
|
---|
1987 |
|
---|
1988 | void ViewCellsManager::ExportViewCellsForViz(Exporter *exporter,
|
---|
1989 | const AxisAlignedBox3 *sceneBox,
|
---|
1990 | const AxisAlignedPlane *clipPlane,
|
---|
1991 | const bool colorCode
|
---|
1992 | ) const
|
---|
1993 | {
|
---|
1994 | ViewCellContainer::const_iterator it, it_end = mViewCells.end();
|
---|
1995 |
|
---|
1996 | for (it = mViewCells.begin(); it != it_end; ++ it)
|
---|
1997 | {
|
---|
1998 | if (!mOnlyValidViewCells || (*it)->GetValid())
|
---|
1999 | {
|
---|
2000 | ExportColor(exporter, *it, colorCode);
|
---|
2001 | ExportViewCellGeometry(exporter, *it, sceneBox, clipPlane);
|
---|
2002 | }
|
---|
2003 | }
|
---|
2004 | }
|
---|
2005 |
|
---|
2006 |
|
---|
2007 | void ViewCellsManager::CreateViewCellMeshes()
|
---|
2008 | {
|
---|
2009 | // convert to meshes
|
---|
2010 | ViewCellContainer::const_iterator it, it_end = mViewCells.end();
|
---|
2011 |
|
---|
2012 | for (it = mViewCells.begin(); it != it_end; ++ it)
|
---|
2013 | {
|
---|
2014 | if (!(*it)->GetMesh())
|
---|
2015 | {
|
---|
2016 | CreateMesh(*it);
|
---|
2017 | }
|
---|
2018 | }
|
---|
2019 | }
|
---|
2020 |
|
---|
2021 |
|
---|
2022 | bool ViewCellsManager::ExportViewCells(const string filename,
|
---|
2023 | const bool exportPvs,
|
---|
2024 | const ObjectContainer &objects)
|
---|
2025 | {
|
---|
2026 | return false;
|
---|
2027 | }
|
---|
2028 |
|
---|
2029 |
|
---|
2030 | void ViewCellsManager::CollectViewCells(const int n)
|
---|
2031 | {
|
---|
2032 | mNumActiveViewCells = n;
|
---|
2033 | mViewCells.clear();
|
---|
2034 | // implemented in subclasses
|
---|
2035 | CollectViewCells();
|
---|
2036 | }
|
---|
2037 |
|
---|
2038 |
|
---|
2039 | void ViewCellsManager::SetViewCellsActive()
|
---|
2040 | {
|
---|
2041 | // collect leaf view cells and set the pointers to the currently
|
---|
2042 | // active view cells
|
---|
2043 | ViewCellContainer::const_iterator it, it_end = mViewCells.end();
|
---|
2044 |
|
---|
2045 | for (it = mViewCells.begin(); it != it_end; ++ it)
|
---|
2046 | {
|
---|
2047 | ViewCellContainer leaves;
|
---|
2048 | mViewCellsTree->CollectLeaves(*it, leaves);
|
---|
2049 |
|
---|
2050 | ViewCellContainer::const_iterator lit, lit_end = leaves.end();
|
---|
2051 | for (lit = mViewCells.begin(); lit != lit_end; ++ lit)
|
---|
2052 | {
|
---|
2053 | dynamic_cast<ViewCellLeaf *>(*lit)->SetActiveViewCell(*it);
|
---|
2054 | }
|
---|
2055 | }
|
---|
2056 | }
|
---|
2057 |
|
---|
2058 |
|
---|
2059 | int ViewCellsManager::GetMaxFilterSize() const
|
---|
2060 | {
|
---|
2061 | return mMaxFilterSize;
|
---|
2062 | }
|
---|
2063 |
|
---|
2064 |
|
---|
2065 | static const bool USE_ASCII = true;
|
---|
2066 |
|
---|
2067 |
|
---|
2068 | bool ViewCellsManager::ExportBoundingBoxes(const string filename,
|
---|
2069 | const ObjectContainer &objects) const
|
---|
2070 | {
|
---|
2071 | ObjectContainer::const_iterator it, it_end = objects.end();
|
---|
2072 |
|
---|
2073 | if (USE_ASCII)
|
---|
2074 | {
|
---|
2075 | ofstream boxesOut(filename.c_str());
|
---|
2076 | if (!boxesOut.is_open())
|
---|
2077 | return false;
|
---|
2078 |
|
---|
2079 | for (it = objects.begin(); it != it_end; ++ it)
|
---|
2080 | {
|
---|
2081 | MeshInstance *mi = dynamic_cast<MeshInstance *>(*it);
|
---|
2082 | const AxisAlignedBox3 box = mi->GetBox();
|
---|
2083 |
|
---|
2084 | boxesOut << mi->GetId() << " "
|
---|
2085 | << box.Min().x << " "
|
---|
2086 | << box.Min().y << " "
|
---|
2087 | << box.Min().z << " "
|
---|
2088 | << box.Max().x << " "
|
---|
2089 | << box.Max().y << " "
|
---|
2090 | << box.Max().z << endl;
|
---|
2091 | }
|
---|
2092 |
|
---|
2093 | boxesOut.close();
|
---|
2094 | }
|
---|
2095 | else
|
---|
2096 | {
|
---|
2097 | ofstream boxesOut(filename.c_str(), ios::binary);
|
---|
2098 |
|
---|
2099 | if (!boxesOut.is_open())
|
---|
2100 | return false;
|
---|
2101 |
|
---|
2102 | for (it = objects.begin(); it != it_end; ++ it)
|
---|
2103 | {
|
---|
2104 | MeshInstance *mi = dynamic_cast<MeshInstance *>(*it);
|
---|
2105 | const AxisAlignedBox3 box = mi->GetBox();
|
---|
2106 | Vector3 bmin = box.Min();
|
---|
2107 | Vector3 bmax = box.Max();
|
---|
2108 | int id = mi->GetId();
|
---|
2109 |
|
---|
2110 | boxesOut.write(reinterpret_cast<char *>(&id), sizeof(int));
|
---|
2111 | boxesOut.write(reinterpret_cast<char *>(&bmin), sizeof(Vector3));
|
---|
2112 | boxesOut.write(reinterpret_cast<char *>(&bmax), sizeof(Vector3));
|
---|
2113 | }
|
---|
2114 |
|
---|
2115 | boxesOut.close();
|
---|
2116 | }
|
---|
2117 |
|
---|
2118 | return true;
|
---|
2119 | }
|
---|
2120 |
|
---|
2121 |
|
---|
2122 | bool ViewCellsManager::LoadBoundingBoxes(const string filename,
|
---|
2123 | IndexedBoundingBoxContainer &boxes) const
|
---|
2124 | {
|
---|
2125 | Vector3 bmin, bmax;
|
---|
2126 | int id;
|
---|
2127 |
|
---|
2128 | if (USE_ASCII)
|
---|
2129 | {
|
---|
2130 | ifstream boxesIn(filename.c_str());
|
---|
2131 |
|
---|
2132 | if (!boxesIn.is_open())
|
---|
2133 | {
|
---|
2134 | cout << "failed to open file " << filename << endl;
|
---|
2135 | return false;
|
---|
2136 | }
|
---|
2137 |
|
---|
2138 | string buf;
|
---|
2139 | while (!(getline(boxesIn, buf)).eof())
|
---|
2140 | {
|
---|
2141 | sscanf(buf.c_str(), "%d %f %f %f %f %f %f",
|
---|
2142 | &id, &bmin.x, &bmin.y, &bmin.z,
|
---|
2143 | &bmax.x, &bmax.y, &bmax.z);
|
---|
2144 |
|
---|
2145 | AxisAlignedBox3 box(bmin, bmax);
|
---|
2146 | // MeshInstance *mi = new MeshInstance();
|
---|
2147 | // HACK: set bounding box to new box
|
---|
2148 | //mi->mBox = box;
|
---|
2149 |
|
---|
2150 | boxes.push_back(IndexedBoundingBox(id, box));
|
---|
2151 | }
|
---|
2152 |
|
---|
2153 | boxesIn.close();
|
---|
2154 | }
|
---|
2155 | else
|
---|
2156 | {
|
---|
2157 | ifstream boxesIn(filename.c_str(), ios::binary);
|
---|
2158 |
|
---|
2159 | if (!boxesIn.is_open())
|
---|
2160 | return false;
|
---|
2161 |
|
---|
2162 | while (1)
|
---|
2163 | {
|
---|
2164 | boxesIn.read(reinterpret_cast<char *>(&id), sizeof(Vector3));
|
---|
2165 | boxesIn.read(reinterpret_cast<char *>(&bmin), sizeof(Vector3));
|
---|
2166 | boxesIn.read(reinterpret_cast<char *>(&bmax), sizeof(Vector3));
|
---|
2167 |
|
---|
2168 | if (boxesIn.eof())
|
---|
2169 | break;
|
---|
2170 |
|
---|
2171 |
|
---|
2172 | AxisAlignedBox3 box(bmin, bmax);
|
---|
2173 | MeshInstance *mi = new MeshInstance(NULL);
|
---|
2174 |
|
---|
2175 | // HACK: set bounding box to new box
|
---|
2176 | //mi->mBox = box;
|
---|
2177 | //boxes.push_back(mi);
|
---|
2178 | boxes.push_back(IndexedBoundingBox(id, box));
|
---|
2179 | }
|
---|
2180 |
|
---|
2181 | boxesIn.close();
|
---|
2182 | }
|
---|
2183 |
|
---|
2184 | return true;
|
---|
2185 | }
|
---|
2186 |
|
---|
2187 |
|
---|
2188 | float ViewCellsManager::GetFilterWidth()
|
---|
2189 | {
|
---|
2190 | return mFilterWidth;
|
---|
2191 | }
|
---|
2192 |
|
---|
2193 |
|
---|
2194 | float ViewCellsManager::GetAbsFilterWidth()
|
---|
2195 | {
|
---|
2196 | return Magnitude(mViewSpaceBox.Size()) * mFilterWidth;
|
---|
2197 | }
|
---|
2198 |
|
---|
2199 |
|
---|
2200 | void ViewCellsManager::UpdateScalarPvsSize(ViewCell *vc,
|
---|
2201 | const int pvsSize,
|
---|
2202 | const int entriesInPvs) const
|
---|
2203 | {
|
---|
2204 | vc->mPvsSize = pvsSize;
|
---|
2205 | vc->mEntriesInPvs = entriesInPvs;
|
---|
2206 |
|
---|
2207 | vc->mPvsSizeValid = true;
|
---|
2208 | }
|
---|
2209 |
|
---|
2210 |
|
---|
2211 | void
|
---|
2212 | ViewCellsManager::ApplyFilter(ViewCell *viewCell,
|
---|
2213 | KdTree *kdTree,
|
---|
2214 | const float viewSpaceFilterSize,
|
---|
2215 | const float spatialFilterSize,
|
---|
2216 | ObjectPvs &pvs
|
---|
2217 | )
|
---|
2218 | {
|
---|
2219 | // extend the pvs of the viewcell by pvs of its neighbors
|
---|
2220 | // and apply spatial filter by including all neighbors of the objects
|
---|
2221 | // in the pvs
|
---|
2222 |
|
---|
2223 | // get all viewcells intersecting the viewSpaceFilterBox
|
---|
2224 | // and compute the pvs union
|
---|
2225 |
|
---|
2226 | //Vector3 center = viewCell->GetBox().Center();
|
---|
2227 | // Vector3 center = m->mBox.Center();
|
---|
2228 |
|
---|
2229 | // AxisAlignedBox3 box(center - Vector3(viewSpaceFilterSize/2),
|
---|
2230 | // center + Vector3(viewSpaceFilterSize/2));
|
---|
2231 | if (!ViewCellsConstructed())
|
---|
2232 | return;
|
---|
2233 |
|
---|
2234 | if (viewSpaceFilterSize >= 0.0f) {
|
---|
2235 |
|
---|
2236 | bool usePrVS = false;
|
---|
2237 |
|
---|
2238 | if (!usePrVS) {
|
---|
2239 | AxisAlignedBox3 box = GetViewCellBox(viewCell);
|
---|
2240 | box.Enlarge(Vector3(viewSpaceFilterSize/2));
|
---|
2241 |
|
---|
2242 | ViewCellContainer viewCells;
|
---|
2243 | ComputeBoxIntersections(box, viewCells);
|
---|
2244 |
|
---|
2245 | // cout<<"box="<<box<<endl;
|
---|
2246 | ViewCellContainer::const_iterator it = viewCells.begin(), it_end = viewCells.end();
|
---|
2247 |
|
---|
2248 | int i;
|
---|
2249 | for (i=0; it != it_end; ++ it, ++ i) {
|
---|
2250 | //cout<<"v"<<i<<" pvs="<<(*it)->GetPvs().mEntries.size()<<endl;
|
---|
2251 | pvs.Merge((*it)->GetPvs());
|
---|
2252 | }
|
---|
2253 | } else {
|
---|
2254 | PrVs prvs;
|
---|
2255 | AxisAlignedBox3 box = GetViewCellBox(viewCell);
|
---|
2256 |
|
---|
2257 | // mViewCellsManager->SetMaxFilterSize(1);
|
---|
2258 | GetPrVS(box.Center(), prvs, viewSpaceFilterSize);
|
---|
2259 | pvs = prvs.mViewCell->GetPvs();
|
---|
2260 | DeleteLocalMergeTree(prvs.mViewCell);
|
---|
2261 | }
|
---|
2262 | } else
|
---|
2263 | pvs = viewCell->GetPvs();
|
---|
2264 |
|
---|
2265 | if (spatialFilterSize >=0.0f)
|
---|
2266 | ApplySpatialFilter(kdTree, spatialFilterSize, pvs);
|
---|
2267 |
|
---|
2268 | }
|
---|
2269 |
|
---|
2270 |
|
---|
2271 |
|
---|
2272 | void
|
---|
2273 | ViewCellsManager::ApplyFilter(KdTree *kdTree,
|
---|
2274 | const float relViewSpaceFilterSize,
|
---|
2275 | const float relSpatialFilterSize
|
---|
2276 | )
|
---|
2277 | {
|
---|
2278 |
|
---|
2279 | if (!ViewCellsConstructed())
|
---|
2280 | return;
|
---|
2281 |
|
---|
2282 | ViewCellContainer::const_iterator it, it_end = mViewCells.end();
|
---|
2283 |
|
---|
2284 | ObjectPvs *newPvs;
|
---|
2285 | newPvs = new ObjectPvs[mViewCells.size()];
|
---|
2286 |
|
---|
2287 | float viewSpaceFilterSize = Magnitude(mViewSpaceBox.Size())*relViewSpaceFilterSize;
|
---|
2288 | float spatialFilterSize = Magnitude(kdTree->GetBox().Size())*relSpatialFilterSize;
|
---|
2289 |
|
---|
2290 | int i;
|
---|
2291 | for (i=0, it = mViewCells.begin(); it != it_end; ++ it, ++ i) {
|
---|
2292 | ApplyFilter(*it,
|
---|
2293 | kdTree,
|
---|
2294 | viewSpaceFilterSize,
|
---|
2295 | spatialFilterSize,
|
---|
2296 | newPvs[i]
|
---|
2297 | );
|
---|
2298 | }
|
---|
2299 |
|
---|
2300 | // now replace all pvss
|
---|
2301 | for (i = 0, it = mViewCells.begin(); it != it_end; ++ it, ++ i) {
|
---|
2302 |
|
---|
2303 | ObjectPvs &pvs = (*it)->GetPvs();
|
---|
2304 | pvs.Clear();
|
---|
2305 | pvs = newPvs[i];
|
---|
2306 | newPvs[i].Clear();
|
---|
2307 | }
|
---|
2308 |
|
---|
2309 | delete [] newPvs;
|
---|
2310 | }
|
---|
2311 |
|
---|
2312 |
|
---|
2313 |
|
---|
2314 |
|
---|
2315 | void
|
---|
2316 | ViewCellsManager::ApplySpatialFilter(
|
---|
2317 | KdTree *kdTree,
|
---|
2318 | const float spatialFilterSize,
|
---|
2319 | ObjectPvs &pvs
|
---|
2320 | )
|
---|
2321 | {
|
---|
2322 | // now compute a new Pvs by including also objects intersecting the
|
---|
2323 | // extended boxes of visible objects
|
---|
2324 |
|
---|
2325 | Intersectable::NewMail();
|
---|
2326 |
|
---|
2327 | ObjectPvsMap::const_iterator oi;
|
---|
2328 |
|
---|
2329 | for (oi = pvs.mEntries.begin(); oi != pvs.mEntries.end(); ++ oi)
|
---|
2330 | {
|
---|
2331 | Intersectable *object = (*oi).first;
|
---|
2332 | object->Mail();
|
---|
2333 | }
|
---|
2334 |
|
---|
2335 | ObjectPvs nPvs;
|
---|
2336 | int nPvsSize = 0;
|
---|
2337 | // now go through the pvs again
|
---|
2338 | for (oi = pvs.mEntries.begin(); oi != pvs.mEntries.end(); ++oi) {
|
---|
2339 | Intersectable *object = (*oi).first;
|
---|
2340 |
|
---|
2341 | // Vector3 center = object->GetBox().Center();
|
---|
2342 | // AxisAlignedBox3 box(center - Vector3(spatialFilterSize/2),
|
---|
2343 | // center + Vector3(spatialFilterSize/2));
|
---|
2344 |
|
---|
2345 | AxisAlignedBox3 box = object->GetBox();
|
---|
2346 | box.Enlarge(Vector3(spatialFilterSize/2));
|
---|
2347 |
|
---|
2348 | ObjectContainer objects;
|
---|
2349 |
|
---|
2350 | // $$ warning collect objects takes only unmailed ones!
|
---|
2351 | kdTree->CollectObjects(box,
|
---|
2352 | objects);
|
---|
2353 | // cout<<"collected objects="<<objects.size()<<endl;
|
---|
2354 | ObjectContainer::const_iterator noi = objects.begin();
|
---|
2355 | for (; noi != objects.end(); ++noi) {
|
---|
2356 | Intersectable *o = *noi;
|
---|
2357 | // $$ JB warning: pdfs are not correct at this point!
|
---|
2358 | nPvs.AddSample(o, Limits::Small);
|
---|
2359 | nPvsSize++;
|
---|
2360 | }
|
---|
2361 | }
|
---|
2362 | // cout<<"nPvs size = "<<nPvsSize<<endl;
|
---|
2363 | pvs.Merge(nPvs);
|
---|
2364 | }
|
---|
2365 |
|
---|
2366 |
|
---|
2367 | void ViewCellsManager::ExportColor(Exporter *exporter,
|
---|
2368 | ViewCell *vc,
|
---|
2369 | bool colorCode) const
|
---|
2370 | {
|
---|
2371 | const bool vcValid = CheckValidity(vc, mMinPvsSize, mMaxPvsSize);
|
---|
2372 |
|
---|
2373 | float importance = 0;
|
---|
2374 | static Material m;
|
---|
2375 |
|
---|
2376 | switch (mColorCode)
|
---|
2377 | {
|
---|
2378 | case 0: // Random
|
---|
2379 | {
|
---|
2380 | if (vcValid)
|
---|
2381 | {
|
---|
2382 | m.mDiffuseColor.r = 0.5f + RandomValue(0.0f, 0.5f);
|
---|
2383 | m.mDiffuseColor.g = 0.5f + RandomValue(0.0f, 0.5f);
|
---|
2384 | m.mDiffuseColor.b = 0.5f + RandomValue(0.f, 0.5f);
|
---|
2385 | }
|
---|
2386 | else
|
---|
2387 | {
|
---|
2388 | m.mDiffuseColor.r = 0.0f;
|
---|
2389 | m.mDiffuseColor.g = 1.0f;
|
---|
2390 | m.mDiffuseColor.b = 0.0f;
|
---|
2391 | }
|
---|
2392 |
|
---|
2393 | exporter->SetForcedMaterial(m);
|
---|
2394 | return;
|
---|
2395 | }
|
---|
2396 |
|
---|
2397 | case 1: // pvs
|
---|
2398 | {
|
---|
2399 | if (mCurrentViewCellsStats.maxPvs)
|
---|
2400 | {
|
---|
2401 | importance =
|
---|
2402 | (float)mViewCellsTree->GetPvsSize(vc) /
|
---|
2403 | (float)mCurrentViewCellsStats.maxPvs;
|
---|
2404 | }
|
---|
2405 | }
|
---|
2406 | break;
|
---|
2407 | case 2: // merges
|
---|
2408 | {
|
---|
2409 | const int lSize = mViewCellsTree->GetNumInitialViewCells(vc);
|
---|
2410 | importance = (float)lSize / (float)mCurrentViewCellsStats.maxLeaves;
|
---|
2411 | }
|
---|
2412 | break;
|
---|
2413 | #if 0
|
---|
2414 | case 3: // merge tree differene
|
---|
2415 | {
|
---|
2416 | importance = (float)GetMaxTreeDiff(vc) /
|
---|
2417 | (float)(mVspBspTree->GetStatistics().maxDepth * 2);
|
---|
2418 |
|
---|
2419 | }
|
---|
2420 | break;
|
---|
2421 | #endif
|
---|
2422 | default:
|
---|
2423 | break;
|
---|
2424 | }
|
---|
2425 |
|
---|
2426 | // special color code for invalid view cells
|
---|
2427 | m.mDiffuseColor.r = importance;
|
---|
2428 | m.mDiffuseColor.g = 1.0f - m.mDiffuseColor.r;
|
---|
2429 | m.mDiffuseColor.b = vcValid ? 1.0f : 0.0f;
|
---|
2430 |
|
---|
2431 | //Debug << "importance: " << importance << endl;
|
---|
2432 | exporter->SetForcedMaterial(m);
|
---|
2433 | }
|
---|
2434 |
|
---|
2435 |
|
---|
2436 | void ViewCellsManager::CollectMergeCandidates(const VssRayContainer &rays,
|
---|
2437 | vector<MergeCandidate> &candidates)
|
---|
2438 | {
|
---|
2439 | // implemented in subclasses
|
---|
2440 | }
|
---|
2441 |
|
---|
2442 |
|
---|
2443 | void ViewCellsManager::UpdatePvsForEvaluation(ViewCell *root, ObjectPvs &pvs)
|
---|
2444 | {
|
---|
2445 | // terminate traversal
|
---|
2446 | if (root->IsLeaf())
|
---|
2447 | {
|
---|
2448 | // we assume that pvs is explicitly stored in leaves
|
---|
2449 | pvs = root->GetPvs();
|
---|
2450 | UpdateScalarPvsSize(root, pvs.CountObjectsInPvs(), pvs.GetSize());
|
---|
2451 |
|
---|
2452 | return;
|
---|
2453 | }
|
---|
2454 |
|
---|
2455 | //-- interior node => propagate pvs up
|
---|
2456 | ViewCellInterior *interior = dynamic_cast<ViewCellInterior *>(root);
|
---|
2457 | interior->GetPvs().Clear();
|
---|
2458 | pvs.Clear();
|
---|
2459 | vector<ObjectPvs> pvsList;
|
---|
2460 |
|
---|
2461 | ViewCellContainer::const_iterator vit, vit_end = interior->mChildren.end();
|
---|
2462 |
|
---|
2463 | for (vit = interior->mChildren.begin(); vit != vit_end; ++ vit)
|
---|
2464 | {
|
---|
2465 | ObjectPvs objPvs;
|
---|
2466 |
|
---|
2467 | //-- recursivly compute child pvss
|
---|
2468 | UpdatePvsForEvaluation(*vit, objPvs);
|
---|
2469 |
|
---|
2470 | // store pvs in vector
|
---|
2471 | pvsList.push_back(objPvs);
|
---|
2472 | }
|
---|
2473 |
|
---|
2474 | #if 1
|
---|
2475 | Intersectable::NewMail();
|
---|
2476 |
|
---|
2477 | //-- faster way of computing pvs:
|
---|
2478 | // construct merged pvs by adding
|
---|
2479 | // and only those of the next pvs which were not mailed.
|
---|
2480 | // note: sumpdf is not correct!!
|
---|
2481 | vector<ObjectPvs>::iterator oit = pvsList.begin();
|
---|
2482 |
|
---|
2483 | for (vit = interior->mChildren.begin(); vit != vit_end; ++ vit, ++ oit)
|
---|
2484 | {
|
---|
2485 | ObjectPvsMap::iterator pit, pit_end = (*oit).mEntries.end();
|
---|
2486 |
|
---|
2487 | for (pit = (*oit).mEntries.begin(); pit != pit_end; ++ pit)
|
---|
2488 | {
|
---|
2489 | Intersectable *intersect = (*pit).first;
|
---|
2490 |
|
---|
2491 | if (!intersect->Mailed())
|
---|
2492 | {
|
---|
2493 | pvs.AddSample(intersect, (*pit).second.mSumPdf);
|
---|
2494 | intersect->Mail();
|
---|
2495 | }
|
---|
2496 | }
|
---|
2497 | }
|
---|
2498 |
|
---|
2499 | // store pvs in this node
|
---|
2500 | if (mViewCellsTree->ViewCellsStorage() == ViewCellsTree::PVS_IN_INTERIORS)
|
---|
2501 | {
|
---|
2502 | interior->SetPvs(pvs);
|
---|
2503 | }
|
---|
2504 |
|
---|
2505 | // set new pvs size
|
---|
2506 | UpdateScalarPvsSize(interior, pvs.CountObjectsInPvs(), pvs.GetSize());
|
---|
2507 |
|
---|
2508 |
|
---|
2509 | #else // really merge cells: slow put sumPdf is correct
|
---|
2510 | viewCellInterior->GetPvs().Merge(backVc->GetPvs());
|
---|
2511 | viewCellInterior->GetPvs().Merge(frontVc->GetPvs());
|
---|
2512 | #endif
|
---|
2513 | }
|
---|
2514 |
|
---|
2515 |
|
---|
2516 |
|
---|
2517 | /*******************************************************************/
|
---|
2518 | /* BspViewCellsManager implementation */
|
---|
2519 | /*******************************************************************/
|
---|
2520 |
|
---|
2521 |
|
---|
2522 | BspViewCellsManager::BspViewCellsManager(ViewCellsTree *vcTree, BspTree *bspTree):
|
---|
2523 | ViewCellsManager(vcTree), mBspTree(bspTree)
|
---|
2524 | {
|
---|
2525 | Environment::GetSingleton()->GetIntValue("BspTree.Construction.samples", mInitialSamples);
|
---|
2526 | mBspTree->SetViewCellsManager(this);
|
---|
2527 | mBspTree->SetViewCellsTree(mViewCellsTree);
|
---|
2528 | }
|
---|
2529 |
|
---|
2530 |
|
---|
2531 | bool BspViewCellsManager::ViewCellsConstructed() const
|
---|
2532 | {
|
---|
2533 | return mBspTree->GetRoot() != NULL;
|
---|
2534 | }
|
---|
2535 |
|
---|
2536 |
|
---|
2537 | ViewCell *BspViewCellsManager::GenerateViewCell(Mesh *mesh) const
|
---|
2538 | {
|
---|
2539 | return new BspViewCell(mesh);
|
---|
2540 | }
|
---|
2541 |
|
---|
2542 |
|
---|
2543 | int BspViewCellsManager::ConstructSubdivision(const ObjectContainer &objects,
|
---|
2544 | const VssRayContainer &rays)
|
---|
2545 | {
|
---|
2546 | // if view cells were already constructed, we can finish
|
---|
2547 | if (ViewCellsConstructed())
|
---|
2548 | return 0;
|
---|
2549 |
|
---|
2550 | int sampleContributions = 0;
|
---|
2551 |
|
---|
2552 | // construct view cells using the collected samples
|
---|
2553 | RayContainer constructionRays;
|
---|
2554 | VssRayContainer savedRays;
|
---|
2555 |
|
---|
2556 | // choose a a number of rays based on the ratio of cast rays / requested rays
|
---|
2557 | const int limit = min(mInitialSamples, (int)rays.size());
|
---|
2558 | VssRayContainer::const_iterator it, it_end = rays.end();
|
---|
2559 |
|
---|
2560 | const float prop = (float)limit / ((float)rays.size() + Limits::Small);
|
---|
2561 | for (it = rays.begin(); it != it_end; ++ it)
|
---|
2562 | {
|
---|
2563 | if (Random(1.0f) < prop)
|
---|
2564 | constructionRays.push_back(new Ray(*(*it)));
|
---|
2565 | else
|
---|
2566 | savedRays.push_back(*it);
|
---|
2567 | }
|
---|
2568 |
|
---|
2569 | if (!mUsePredefinedViewCells)
|
---|
2570 | {
|
---|
2571 | // no view cells loaded
|
---|
2572 | mBspTree->Construct(objects, constructionRays, &mViewSpaceBox);
|
---|
2573 | // collect final view cells
|
---|
2574 | mBspTree->CollectViewCells(mViewCells);
|
---|
2575 | }
|
---|
2576 | else
|
---|
2577 | {
|
---|
2578 | // use predefined view cells geometry =>
|
---|
2579 | // contruct bsp hierarchy over them
|
---|
2580 | mBspTree->Construct(mViewCells);
|
---|
2581 | }
|
---|
2582 |
|
---|
2583 | // destroy rays created only for construction
|
---|
2584 | CLEAR_CONTAINER(constructionRays);
|
---|
2585 |
|
---|
2586 | Debug << mBspTree->GetStatistics() << endl;
|
---|
2587 | Debug << "\nView cells after construction:\n" << mCurrentViewCellsStats << endl;
|
---|
2588 |
|
---|
2589 | // recast rest of the rays
|
---|
2590 | if (SAMPLE_AFTER_SUBDIVISION)
|
---|
2591 | ComputeSampleContributions(savedRays, true, false);
|
---|
2592 |
|
---|
2593 | // real meshes are contructed at this stage
|
---|
2594 | if (0)
|
---|
2595 | {
|
---|
2596 | cout << "finalizing view cells ... ";
|
---|
2597 | FinalizeViewCells(true);
|
---|
2598 | cout << "finished" << endl;
|
---|
2599 | }
|
---|
2600 |
|
---|
2601 | return sampleContributions;
|
---|
2602 | }
|
---|
2603 |
|
---|
2604 |
|
---|
2605 | void BspViewCellsManager::CollectViewCells()
|
---|
2606 | {
|
---|
2607 | if (!ViewCellsTreeConstructed())
|
---|
2608 | { // view cells tree constructed
|
---|
2609 | mBspTree->CollectViewCells(mViewCells);
|
---|
2610 | }
|
---|
2611 | else
|
---|
2612 | { // we can use the view cells tree hierarchy to get the right set
|
---|
2613 | mViewCellsTree->CollectBestViewCellSet(mViewCells, mNumActiveViewCells);
|
---|
2614 | }
|
---|
2615 | }
|
---|
2616 |
|
---|
2617 |
|
---|
2618 | float BspViewCellsManager::GetProbability(ViewCell *viewCell)
|
---|
2619 | {
|
---|
2620 | if (1)
|
---|
2621 | return GetVolume(viewCell) / GetViewSpaceBox().GetVolume();
|
---|
2622 | else
|
---|
2623 | // compute view cell area as subsititute for probability
|
---|
2624 | return GetArea(viewCell) / GetAccVcArea();
|
---|
2625 | }
|
---|
2626 |
|
---|
2627 |
|
---|
2628 |
|
---|
2629 | int BspViewCellsManager::CastLineSegment(const Vector3 &origin,
|
---|
2630 | const Vector3 &termination,
|
---|
2631 | ViewCellContainer &viewcells)
|
---|
2632 | {
|
---|
2633 | return mBspTree->CastLineSegment(origin, termination, viewcells);
|
---|
2634 | }
|
---|
2635 |
|
---|
2636 |
|
---|
2637 | void ViewCellsManager::ExportMergedViewCells(const ObjectContainer &objects)
|
---|
2638 | {
|
---|
2639 | // save color code
|
---|
2640 | const int savedColorCode = mColorCode;
|
---|
2641 |
|
---|
2642 | // export merged view cells
|
---|
2643 | mColorCode = 0; // use random colors
|
---|
2644 |
|
---|
2645 | Exporter *exporter = Exporter::GetExporter("merged_view_cells.wrl");
|
---|
2646 |
|
---|
2647 | cout << "exporting view cells after merge ... ";
|
---|
2648 |
|
---|
2649 | if (exporter)
|
---|
2650 | {
|
---|
2651 | if (mExportGeometry)
|
---|
2652 | {
|
---|
2653 | exporter->ExportGeometry(objects);
|
---|
2654 | }
|
---|
2655 |
|
---|
2656 | exporter->SetFilled();
|
---|
2657 | ExportViewCellsForViz(exporter, NULL, GetClipPlane());
|
---|
2658 |
|
---|
2659 | delete exporter;
|
---|
2660 | }
|
---|
2661 | cout << "finished" << endl;
|
---|
2662 |
|
---|
2663 | // export merged view cells using pvs color coding
|
---|
2664 | mColorCode = 1;
|
---|
2665 |
|
---|
2666 | exporter = Exporter::GetExporter("merged_view_cells_pvs.wrl");
|
---|
2667 | cout << "exporting view cells after merge (pvs size) ... ";
|
---|
2668 |
|
---|
2669 | if (exporter)
|
---|
2670 | {
|
---|
2671 | if (mExportGeometry)
|
---|
2672 | {
|
---|
2673 | exporter->ExportGeometry(objects);
|
---|
2674 | }
|
---|
2675 |
|
---|
2676 | exporter->SetFilled();
|
---|
2677 | ExportViewCellsForViz(exporter, NULL, GetClipPlane());
|
---|
2678 |
|
---|
2679 | delete exporter;
|
---|
2680 | }
|
---|
2681 | cout << "finished" << endl;
|
---|
2682 |
|
---|
2683 | mColorCode = savedColorCode;
|
---|
2684 | }
|
---|
2685 |
|
---|
2686 |
|
---|
2687 | int BspViewCellsManager::PostProcess(const ObjectContainer &objects,
|
---|
2688 | const VssRayContainer &rays)
|
---|
2689 | {
|
---|
2690 | if (!ViewCellsConstructed())
|
---|
2691 | {
|
---|
2692 | Debug << "view cells not constructed" << endl;
|
---|
2693 | return 0;
|
---|
2694 | }
|
---|
2695 |
|
---|
2696 | // view cells already finished before post processing step,
|
---|
2697 | // i.e., because they were loaded from disc
|
---|
2698 | if (mViewCellsFinished)
|
---|
2699 | {
|
---|
2700 | FinalizeViewCells(true);
|
---|
2701 | EvaluateViewCellsStats();
|
---|
2702 |
|
---|
2703 | return 0;
|
---|
2704 | }
|
---|
2705 |
|
---|
2706 | //////////////////
|
---|
2707 | //-- merge leaves of the view cell hierarchy
|
---|
2708 |
|
---|
2709 | cout << "starting post processing using " << mPostProcessSamples << " samples ... ";
|
---|
2710 | long startTime = GetTime();
|
---|
2711 |
|
---|
2712 | VssRayContainer postProcessRays;
|
---|
2713 | GetRaySets(rays, mPostProcessSamples, postProcessRays);
|
---|
2714 |
|
---|
2715 | if (mMergeViewCells)
|
---|
2716 | {
|
---|
2717 | cout << "constructing visibility based merge tree" << endl;
|
---|
2718 | mViewCellsTree->ConstructMergeTree(rays, objects);
|
---|
2719 | }
|
---|
2720 | else
|
---|
2721 | {
|
---|
2722 | cout << "constructing spatial merge tree" << endl;
|
---|
2723 | ViewCell *root;
|
---|
2724 | // the spatial merge tree is difficult to build for
|
---|
2725 | // this type of construction, as view cells cover several
|
---|
2726 | // leaves => create dummy tree which is only 2 levels deep
|
---|
2727 | if (mUsePredefinedViewCells)
|
---|
2728 | {
|
---|
2729 | root = ConstructDummyMergeTree(mBspTree->GetRoot());
|
---|
2730 | }
|
---|
2731 | else
|
---|
2732 | {
|
---|
2733 | // create spatial merge hierarchy
|
---|
2734 | root = ConstructSpatialMergeTree(mBspTree->GetRoot());
|
---|
2735 | }
|
---|
2736 |
|
---|
2737 | mViewCellsTree->SetRoot(root);
|
---|
2738 |
|
---|
2739 | // recompute pvs in the whole hierarchy
|
---|
2740 | ObjectPvs pvs;
|
---|
2741 | UpdatePvsForEvaluation(root, pvs);
|
---|
2742 | }
|
---|
2743 |
|
---|
2744 | cout << "finished" << endl;
|
---|
2745 | cout << "merged view cells in "
|
---|
2746 | << TimeDiff(startTime, GetTime()) * 1e-3 << " secs" << endl;
|
---|
2747 |
|
---|
2748 | Debug << "Postprocessing: Merged view cells in "
|
---|
2749 | << TimeDiff(startTime, GetTime()) * 1e-3 << " secs" << endl << endl;
|
---|
2750 |
|
---|
2751 |
|
---|
2752 | ////////////////////////
|
---|
2753 | //-- visualization and statistics after merge
|
---|
2754 |
|
---|
2755 | if (1)
|
---|
2756 | {
|
---|
2757 | char mstats[100];
|
---|
2758 | Environment::GetSingleton()->GetStringValue("ViewCells.mergeStats", mstats);
|
---|
2759 | mViewCellsTree->ExportStats(mstats);
|
---|
2760 | }
|
---|
2761 |
|
---|
2762 | // recompute view cells and stats
|
---|
2763 | ResetViewCells();
|
---|
2764 | Debug << "\nView cells after merge:\n" << mCurrentViewCellsStats << endl;
|
---|
2765 |
|
---|
2766 | // visualization of the view cells
|
---|
2767 | if (1) ExportMergedViewCells(objects);
|
---|
2768 |
|
---|
2769 | // compute final meshes and volume / area
|
---|
2770 | if (1) FinalizeViewCells(true);
|
---|
2771 |
|
---|
2772 | // write view cells to disc
|
---|
2773 | if (1 && mExportViewCells)
|
---|
2774 | {
|
---|
2775 | char filename[100];
|
---|
2776 | Environment::GetSingleton()->GetStringValue("ViewCells.filename", filename);
|
---|
2777 | ExportViewCells(filename, mExportPvs, objects);
|
---|
2778 | }
|
---|
2779 |
|
---|
2780 | return 0;
|
---|
2781 | }
|
---|
2782 |
|
---|
2783 |
|
---|
2784 | BspViewCellsManager::~BspViewCellsManager()
|
---|
2785 | {
|
---|
2786 | }
|
---|
2787 |
|
---|
2788 |
|
---|
2789 | int BspViewCellsManager::GetType() const
|
---|
2790 | {
|
---|
2791 | return BSP;
|
---|
2792 | }
|
---|
2793 |
|
---|
2794 |
|
---|
2795 | void BspViewCellsManager::Visualize(const ObjectContainer &objects,
|
---|
2796 | const VssRayContainer &sampleRays)
|
---|
2797 | {
|
---|
2798 | if (!ViewCellsConstructed())
|
---|
2799 | return;
|
---|
2800 |
|
---|
2801 | const int savedColorCode = mColorCode;
|
---|
2802 |
|
---|
2803 | if (1) // export final view cells
|
---|
2804 | {
|
---|
2805 | mColorCode = 1; // hack color code
|
---|
2806 | Exporter *exporter = Exporter::GetExporter("final_view_cells.wrl");
|
---|
2807 |
|
---|
2808 | cout << "exporting view cells after merge (pvs size) ... ";
|
---|
2809 |
|
---|
2810 | if (exporter)
|
---|
2811 | {
|
---|
2812 | if (mExportGeometry)
|
---|
2813 | {
|
---|
2814 | exporter->ExportGeometry(objects);
|
---|
2815 | }
|
---|
2816 |
|
---|
2817 | ExportViewCellsForViz(exporter, NULL, GetClipPlane());
|
---|
2818 | delete exporter;
|
---|
2819 | }
|
---|
2820 | cout << "finished" << endl;
|
---|
2821 | }
|
---|
2822 |
|
---|
2823 | // reset color code
|
---|
2824 | mColorCode = savedColorCode;
|
---|
2825 |
|
---|
2826 |
|
---|
2827 | //////////////////
|
---|
2828 | //-- visualization of the BSP splits
|
---|
2829 |
|
---|
2830 | bool exportSplits = false;
|
---|
2831 | Environment::GetSingleton()->GetBoolValue("BspTree.Visualization.exportSplits", exportSplits);
|
---|
2832 |
|
---|
2833 | if (exportSplits)
|
---|
2834 | {
|
---|
2835 | cout << "exporting splits ... ";
|
---|
2836 | ExportSplits(objects);
|
---|
2837 | cout << "finished" << endl;
|
---|
2838 | }
|
---|
2839 |
|
---|
2840 | int leafOut;
|
---|
2841 | Environment::GetSingleton()->GetIntValue("ViewCells.Visualization.maxOutput", leafOut);
|
---|
2842 | const int raysOut = 100;
|
---|
2843 | ExportSingleViewCells(objects, leafOut, false, true, false, raysOut, "");
|
---|
2844 | }
|
---|
2845 |
|
---|
2846 |
|
---|
2847 | void BspViewCellsManager::ExportSplits(const ObjectContainer &objects)
|
---|
2848 | {
|
---|
2849 | Exporter *exporter = Exporter::GetExporter("bsp_splits.x3d");
|
---|
2850 |
|
---|
2851 | if (exporter)
|
---|
2852 | {
|
---|
2853 | //exporter->SetFilled();
|
---|
2854 | if (mExportGeometry)
|
---|
2855 | {
|
---|
2856 | exporter->ExportGeometry(objects);
|
---|
2857 | }
|
---|
2858 |
|
---|
2859 | Material m;
|
---|
2860 | m.mDiffuseColor = RgbColor(1, 0, 0);
|
---|
2861 | exporter->SetForcedMaterial(m);
|
---|
2862 | exporter->SetWireframe();
|
---|
2863 |
|
---|
2864 | exporter->ExportBspSplits(*mBspTree, true);
|
---|
2865 |
|
---|
2866 | // NOTE: take forced material, else big scenes cannot be viewed
|
---|
2867 | m.mDiffuseColor = RgbColor(0, 1, 0);
|
---|
2868 | exporter->SetForcedMaterial(m);
|
---|
2869 | //exporter->ResetForcedMaterial();
|
---|
2870 |
|
---|
2871 | delete exporter;
|
---|
2872 | }
|
---|
2873 | }
|
---|
2874 |
|
---|
2875 |
|
---|
2876 | void BspViewCellsManager::ExportSingleViewCells(const ObjectContainer &objects,
|
---|
2877 | const int maxViewCells,
|
---|
2878 | const bool sortViewCells,
|
---|
2879 | const bool exportPvs,
|
---|
2880 | const bool exportRays,
|
---|
2881 | const int maxRays,
|
---|
2882 | const string prefix,
|
---|
2883 | VssRayContainer *visRays)
|
---|
2884 | {
|
---|
2885 | if (sortViewCells)
|
---|
2886 | { // sort view cells to visualize the largest view cells
|
---|
2887 | stable_sort(mViewCells.begin(), mViewCells.end(), ViewCell::LargerRenderCost);
|
---|
2888 | }
|
---|
2889 |
|
---|
2890 | //////////
|
---|
2891 | //-- some view cells for output
|
---|
2892 |
|
---|
2893 | ViewCell::NewMail();
|
---|
2894 | const int limit = min(maxViewCells, (int)mViewCells.size());
|
---|
2895 |
|
---|
2896 | for (int i = 0; i < limit; ++ i)
|
---|
2897 | {
|
---|
2898 | const int idx = sortViewCells ? (int)RandomValue(0, (float)mViewCells.size() - 0.5f) : i;
|
---|
2899 | ViewCell *vc = mViewCells[idx];
|
---|
2900 |
|
---|
2901 | if (vc->Mailed() || vc->GetId() == OUT_OF_BOUNDS_ID)
|
---|
2902 | continue;
|
---|
2903 |
|
---|
2904 | vc->Mail();
|
---|
2905 |
|
---|
2906 | ObjectPvs pvs;
|
---|
2907 | mViewCellsTree->GetPvs(vc, pvs);
|
---|
2908 |
|
---|
2909 | char s[64]; sprintf(s, "%sviewcell-%04d.wrl", prefix.c_str(), i);
|
---|
2910 | Exporter *exporter = Exporter::GetExporter(s);
|
---|
2911 |
|
---|
2912 | cout << "view cell " << idx << ": pvs size=" << (int)mViewCellsTree->GetPvsSize(vc) << endl;
|
---|
2913 |
|
---|
2914 | if (exportRays)
|
---|
2915 | {
|
---|
2916 | ////////////
|
---|
2917 | //-- export rays piercing this view cell
|
---|
2918 |
|
---|
2919 | // use rays stored with the view cells
|
---|
2920 | VssRayContainer vcRays, vcRays2, vcRays3;
|
---|
2921 | VssRayContainer collectRays;
|
---|
2922 |
|
---|
2923 | // collect initial view cells
|
---|
2924 | ViewCellContainer leaves;
|
---|
2925 | mViewCellsTree->CollectLeaves(vc, leaves);
|
---|
2926 |
|
---|
2927 | ViewCellContainer::const_iterator vit, vit_end = leaves.end();
|
---|
2928 | for (vit = leaves.begin(); vit != vit_end; ++ vit)
|
---|
2929 | {
|
---|
2930 | // prepare some rays for output
|
---|
2931 | VssRayContainer::const_iterator rit, rit_end = (*vit)->mVssRays.end();
|
---|
2932 | for (rit = (*vit)->mVssRays.begin(); rit != rit_end; ++ rit)
|
---|
2933 | {
|
---|
2934 | collectRays.push_back(*rit);
|
---|
2935 | }
|
---|
2936 | }
|
---|
2937 |
|
---|
2938 | const int raysOut = min((int)collectRays.size(), maxRays);
|
---|
2939 |
|
---|
2940 | // prepare some rays for output
|
---|
2941 | VssRayContainer::const_iterator rit, rit_end = collectRays.end();
|
---|
2942 | for (rit = collectRays.begin(); rit != rit_end; ++ rit)
|
---|
2943 | {
|
---|
2944 | const float p = RandomValue(0.0f, (float)collectRays.size());
|
---|
2945 | if (p < raysOut)
|
---|
2946 | {
|
---|
2947 | if ((*rit)->mFlags & VssRay::BorderSample)
|
---|
2948 | {
|
---|
2949 | vcRays.push_back(*rit);
|
---|
2950 | }
|
---|
2951 | else if ((*rit)->mFlags & VssRay::ReverseSample)
|
---|
2952 | vcRays2.push_back(*rit);
|
---|
2953 | else
|
---|
2954 | vcRays3.push_back(*rit);
|
---|
2955 |
|
---|
2956 | }
|
---|
2957 | }
|
---|
2958 |
|
---|
2959 | exporter->ExportRays(vcRays, RgbColor(1, 0, 0));
|
---|
2960 | exporter->ExportRays(vcRays2, RgbColor(0, 1, 0));
|
---|
2961 | exporter->ExportRays(vcRays3, RgbColor(1, 1, 1));
|
---|
2962 | }
|
---|
2963 |
|
---|
2964 | ////////////////
|
---|
2965 | //-- export view cell geometry
|
---|
2966 |
|
---|
2967 | exporter->SetWireframe();
|
---|
2968 |
|
---|
2969 | Material m;//= RandomMaterial();
|
---|
2970 | m.mDiffuseColor = RgbColor(0, 1, 0);
|
---|
2971 | exporter->SetForcedMaterial(m);
|
---|
2972 |
|
---|
2973 | ExportViewCellGeometry(exporter, vc, NULL, NULL);
|
---|
2974 | exporter->SetFilled();
|
---|
2975 |
|
---|
2976 | if (exportPvs)
|
---|
2977 | {
|
---|
2978 | Intersectable::NewMail();
|
---|
2979 | ObjectPvsMap::const_iterator oit, oit_end = pvs.mEntries.end();
|
---|
2980 |
|
---|
2981 | // output PVS of view cell
|
---|
2982 | for (oit = pvs.mEntries.begin(); oit != oit_end; ++ oit)
|
---|
2983 | {
|
---|
2984 | Intersectable *intersect = (*oit).first;
|
---|
2985 |
|
---|
2986 | if (!intersect->Mailed())
|
---|
2987 | {
|
---|
2988 | intersect->Mail();
|
---|
2989 |
|
---|
2990 | m = RandomMaterial();
|
---|
2991 | exporter->SetForcedMaterial(m);
|
---|
2992 | exporter->ExportIntersectable(intersect);
|
---|
2993 | }
|
---|
2994 | }
|
---|
2995 | cout << endl;
|
---|
2996 | }
|
---|
2997 |
|
---|
2998 | DEL_PTR(exporter);
|
---|
2999 | cout << "finished" << endl;
|
---|
3000 | }
|
---|
3001 | }
|
---|
3002 |
|
---|
3003 |
|
---|
3004 | void BspViewCellsManager::TestSubdivision()
|
---|
3005 | {
|
---|
3006 | ViewCellContainer leaves;
|
---|
3007 | mViewCellsTree->CollectLeaves(mViewCellsTree->GetRoot(), leaves);
|
---|
3008 |
|
---|
3009 | ViewCellContainer::const_iterator it, it_end = leaves.end();
|
---|
3010 |
|
---|
3011 | const float vol = mViewSpaceBox.GetVolume();
|
---|
3012 | float subdivVol = 0;
|
---|
3013 | float newVol = 0;
|
---|
3014 |
|
---|
3015 | for (it = leaves.begin(); it != it_end; ++ it)
|
---|
3016 | {
|
---|
3017 | BspNodeGeometry geom;
|
---|
3018 | mBspTree->ConstructGeometry(*it, geom);
|
---|
3019 |
|
---|
3020 | const float lVol = geom.GetVolume();
|
---|
3021 | newVol += lVol;
|
---|
3022 | subdivVol += (*it)->GetVolume();
|
---|
3023 |
|
---|
3024 | const float thres = 0.9f;
|
---|
3025 | if ((lVol < ((*it)->GetVolume() * thres)) ||
|
---|
3026 | (lVol * thres > ((*it)->GetVolume())))
|
---|
3027 | Debug << "warning: " << lVol << " " << (*it)->GetVolume() << endl;
|
---|
3028 | }
|
---|
3029 |
|
---|
3030 | Debug << "exact volume: " << vol << endl;
|
---|
3031 | Debug << "subdivision volume: " << subdivVol << endl;
|
---|
3032 | Debug << "new volume: " << newVol << endl;
|
---|
3033 | }
|
---|
3034 |
|
---|
3035 |
|
---|
3036 | void BspViewCellsManager::ExportViewCellGeometry(Exporter *exporter,
|
---|
3037 | ViewCell *vc,
|
---|
3038 | const AxisAlignedBox3 *sceneBox,
|
---|
3039 | const AxisAlignedPlane *clipPlane
|
---|
3040 | ) const
|
---|
3041 | {
|
---|
3042 | if (clipPlane)
|
---|
3043 | {
|
---|
3044 | const Plane3 plane = clipPlane->GetPlane();
|
---|
3045 |
|
---|
3046 | ViewCellContainer leaves;
|
---|
3047 | mViewCellsTree->CollectLeaves(vc, leaves);
|
---|
3048 | ViewCellContainer::const_iterator it, it_end = leaves.end();
|
---|
3049 |
|
---|
3050 | for (it = leaves.begin(); it != it_end; ++ it)
|
---|
3051 | {
|
---|
3052 | BspNodeGeometry geom;
|
---|
3053 | BspNodeGeometry front;
|
---|
3054 | BspNodeGeometry back;
|
---|
3055 |
|
---|
3056 | mBspTree->ConstructGeometry(*it, geom);
|
---|
3057 |
|
---|
3058 | const float eps = 0.0001f;
|
---|
3059 | const int cf = geom.Side(plane, eps);
|
---|
3060 |
|
---|
3061 | if (cf == -1)
|
---|
3062 | {
|
---|
3063 | exporter->ExportPolygons(geom.GetPolys());
|
---|
3064 | }
|
---|
3065 | else if (cf == 0)
|
---|
3066 | {
|
---|
3067 | geom.SplitGeometry(front,
|
---|
3068 | back,
|
---|
3069 | plane,
|
---|
3070 | mViewSpaceBox,
|
---|
3071 | eps);
|
---|
3072 |
|
---|
3073 | if (back.Valid())
|
---|
3074 | {
|
---|
3075 | exporter->ExportPolygons(back.GetPolys());
|
---|
3076 | }
|
---|
3077 | }
|
---|
3078 | }
|
---|
3079 | }
|
---|
3080 | else
|
---|
3081 | {
|
---|
3082 | // export mesh if available
|
---|
3083 | // TODO: some bug here?
|
---|
3084 | if (1 && vc->GetMesh())
|
---|
3085 | {
|
---|
3086 | exporter->ExportMesh(vc->GetMesh());
|
---|
3087 | }
|
---|
3088 | else
|
---|
3089 | {
|
---|
3090 | BspNodeGeometry geom;
|
---|
3091 | mBspTree->ConstructGeometry(vc, geom);
|
---|
3092 | exporter->ExportPolygons(geom.GetPolys());
|
---|
3093 | }
|
---|
3094 | }
|
---|
3095 | }
|
---|
3096 |
|
---|
3097 |
|
---|
3098 | void BspViewCellsManager::CreateMesh(ViewCell *vc)
|
---|
3099 | {
|
---|
3100 | // note: should previous mesh be deleted (via mesh manager?)
|
---|
3101 | BspNodeGeometry geom;
|
---|
3102 | mBspTree->ConstructGeometry(vc, geom);
|
---|
3103 |
|
---|
3104 | Mesh *mesh = MeshManager::GetSingleton()->CreateResource();
|
---|
3105 |
|
---|
3106 | IncludeNodeGeomInMesh(geom, *mesh);
|
---|
3107 | vc->SetMesh(mesh);
|
---|
3108 | }
|
---|
3109 |
|
---|
3110 |
|
---|
3111 | void BspViewCellsManager::Finalize(ViewCell *viewCell,
|
---|
3112 | const bool createMesh)
|
---|
3113 | {
|
---|
3114 | float area = 0;
|
---|
3115 | float volume = 0;
|
---|
3116 |
|
---|
3117 | ViewCellContainer leaves;
|
---|
3118 | mViewCellsTree->CollectLeaves(viewCell, leaves);
|
---|
3119 |
|
---|
3120 | ViewCellContainer::const_iterator it, it_end = leaves.end();
|
---|
3121 |
|
---|
3122 | for (it = leaves.begin(); it != it_end; ++ it)
|
---|
3123 | {
|
---|
3124 | BspNodeGeometry geom;
|
---|
3125 |
|
---|
3126 | mBspTree->ConstructGeometry(*it, geom);
|
---|
3127 |
|
---|
3128 | const float lVol = geom.GetVolume();
|
---|
3129 | const float lArea = geom.GetArea();
|
---|
3130 |
|
---|
3131 | area += lArea;
|
---|
3132 | volume += lVol;
|
---|
3133 |
|
---|
3134 | CreateMesh(*it);
|
---|
3135 | }
|
---|
3136 |
|
---|
3137 | viewCell->SetVolume(volume);
|
---|
3138 | viewCell->SetArea(area);
|
---|
3139 | }
|
---|
3140 |
|
---|
3141 |
|
---|
3142 | ViewCell *BspViewCellsManager::GetViewCell(const Vector3 &point, const bool active) const
|
---|
3143 | {
|
---|
3144 | if (!ViewCellsConstructed())
|
---|
3145 | {
|
---|
3146 | return NULL;
|
---|
3147 | }
|
---|
3148 | if (!mViewSpaceBox.IsInside(point))
|
---|
3149 | {
|
---|
3150 | return NULL;
|
---|
3151 | }
|
---|
3152 | return mBspTree->GetViewCell(point);
|
---|
3153 | }
|
---|
3154 |
|
---|
3155 |
|
---|
3156 | void BspViewCellsManager::CollectMergeCandidates(const VssRayContainer &rays,
|
---|
3157 | vector<MergeCandidate> &candidates)
|
---|
3158 | {
|
---|
3159 | cout << "collecting merge candidates ... " << endl;
|
---|
3160 |
|
---|
3161 | if (mUseRaysForMerge)
|
---|
3162 | {
|
---|
3163 | mBspTree->CollectMergeCandidates(rays, candidates);
|
---|
3164 | }
|
---|
3165 | else
|
---|
3166 | {
|
---|
3167 | vector<BspLeaf *> leaves;
|
---|
3168 | mBspTree->CollectLeaves(leaves);
|
---|
3169 | mBspTree->CollectMergeCandidates(leaves, candidates);
|
---|
3170 | }
|
---|
3171 |
|
---|
3172 | cout << "fininshed collecting candidates" << endl;
|
---|
3173 | }
|
---|
3174 |
|
---|
3175 |
|
---|
3176 |
|
---|
3177 | bool BspViewCellsManager::ExportViewCells(const string filename,
|
---|
3178 | const bool exportPvs,
|
---|
3179 | const ObjectContainer &objects)
|
---|
3180 | {
|
---|
3181 | if (!ViewCellsConstructed() || !ViewCellsTreeConstructed())
|
---|
3182 | {
|
---|
3183 | return false;
|
---|
3184 | }
|
---|
3185 |
|
---|
3186 | cout << "exporting view cells to xml ... ";
|
---|
3187 |
|
---|
3188 | OUT_STREAM stream(filename.c_str());
|
---|
3189 |
|
---|
3190 | // for output we need unique ids for each view cell
|
---|
3191 | CreateUniqueViewCellIds();
|
---|
3192 |
|
---|
3193 | stream << "<?xml version=\"1.0\" encoding=\"UTF-8\"?>"<<endl;
|
---|
3194 | stream << "<VisibilitySolution>" << endl;
|
---|
3195 |
|
---|
3196 | if (exportPvs)
|
---|
3197 | {
|
---|
3198 | //////////
|
---|
3199 | //-- export bounding boxes: they are used to identify the objects from the pvs and
|
---|
3200 | //-- assign them to the entities in the rendering engine
|
---|
3201 |
|
---|
3202 | stream << "<BoundingBoxes>" << endl;
|
---|
3203 | ObjectContainer::const_iterator oit, oit_end = objects.end();
|
---|
3204 |
|
---|
3205 | for (oit = objects.begin(); oit != oit_end; ++ oit)
|
---|
3206 | {
|
---|
3207 | const AxisAlignedBox3 box = (*oit)->GetBox();
|
---|
3208 |
|
---|
3209 | stream << "<BoundingBox" << " id=\"" << (*oit)->GetId() << "\""
|
---|
3210 | << " min=\"" << box.Min().x << " " << box.Min().y << " " << box.Min().z << "\""
|
---|
3211 | << " max=\"" << box.Max().x << " " << box.Max().y << " " << box.Max().z << "\" />" << endl;
|
---|
3212 | }
|
---|
3213 |
|
---|
3214 | stream << "</BoundingBoxes>" << endl;
|
---|
3215 | }
|
---|
3216 |
|
---|
3217 | ///////////
|
---|
3218 | //-- export the view cells and the pvs
|
---|
3219 |
|
---|
3220 | const int numViewCells = mCurrentViewCellsStats.viewCells;
|
---|
3221 | stream << "<ViewCells number=\"" << numViewCells << "\" >" << endl;
|
---|
3222 |
|
---|
3223 | mViewCellsTree->Export(stream, exportPvs);
|
---|
3224 |
|
---|
3225 | stream << "</ViewCells>" << endl;
|
---|
3226 |
|
---|
3227 | /////////////
|
---|
3228 | //-- export the view space hierarchy
|
---|
3229 | stream << "<ViewSpaceHierarchy type=\"bsp\""
|
---|
3230 | << " min=\"" << mViewSpaceBox.Min().x << " " << mViewSpaceBox.Min().y << " " << mViewSpaceBox.Min().z << "\""
|
---|
3231 | << " max=\"" << mViewSpaceBox.Max().x << " " << mViewSpaceBox.Max().y << " " << mViewSpaceBox.Max().z << "\">" << endl;
|
---|
3232 |
|
---|
3233 | mBspTree->Export(stream);
|
---|
3234 |
|
---|
3235 | // end tags
|
---|
3236 | stream << "</ViewSpaceHierarchy>" << endl;
|
---|
3237 | stream << "</VisibilitySolution>" << endl;
|
---|
3238 |
|
---|
3239 | stream.close();
|
---|
3240 | cout << "finished" << endl;
|
---|
3241 |
|
---|
3242 | return true;
|
---|
3243 | }
|
---|
3244 |
|
---|
3245 |
|
---|
3246 | ViewCell *BspViewCellsManager::ConstructDummyMergeTree(BspNode *root)
|
---|
3247 | {
|
---|
3248 | ViewCellInterior *vcRoot = new ViewCellInterior();
|
---|
3249 |
|
---|
3250 | // evaluate merge cost for priority traversal
|
---|
3251 | const float mergeCost = 1.0f / (float)root->mTimeStamp;
|
---|
3252 | vcRoot->SetMergeCost(mergeCost);
|
---|
3253 |
|
---|
3254 | float volume = 0;
|
---|
3255 | vector<BspLeaf *> leaves;
|
---|
3256 | mBspTree->CollectLeaves(leaves);
|
---|
3257 | vector<BspLeaf *>::const_iterator lit, lit_end = leaves.end();
|
---|
3258 | ViewCell::NewMail();
|
---|
3259 |
|
---|
3260 | for (lit = leaves.begin(); lit != lit_end; ++ lit)
|
---|
3261 | {
|
---|
3262 | BspLeaf *leaf = *lit;
|
---|
3263 | ViewCell *vc = leaf->GetViewCell();
|
---|
3264 |
|
---|
3265 | if (!vc->Mailed())
|
---|
3266 | {
|
---|
3267 | vc->Mail();
|
---|
3268 | vc->SetMergeCost(0.0f);
|
---|
3269 | vcRoot->SetupChildLink(vc);
|
---|
3270 |
|
---|
3271 | volume += vc->GetVolume();
|
---|
3272 | volume += vc->GetVolume();
|
---|
3273 | vcRoot->SetVolume(volume);
|
---|
3274 | }
|
---|
3275 | }
|
---|
3276 |
|
---|
3277 | return vcRoot;
|
---|
3278 | }
|
---|
3279 |
|
---|
3280 |
|
---|
3281 | ViewCell *BspViewCellsManager::ConstructSpatialMergeTree(BspNode *root)
|
---|
3282 | {
|
---|
3283 | // terminate recursion
|
---|
3284 | if (root->IsLeaf())
|
---|
3285 | {
|
---|
3286 | BspLeaf *leaf = dynamic_cast<BspLeaf *>(root);
|
---|
3287 | leaf->GetViewCell()->SetMergeCost(0.0f);
|
---|
3288 | return leaf->GetViewCell();
|
---|
3289 | }
|
---|
3290 |
|
---|
3291 | BspInterior *interior = dynamic_cast<BspInterior *>(root);
|
---|
3292 | ViewCellInterior *viewCellInterior = new ViewCellInterior();
|
---|
3293 |
|
---|
3294 | // evaluate merge cost for priority traversal
|
---|
3295 | float mergeCost = 1.0f / (float)root->mTimeStamp;
|
---|
3296 | viewCellInterior->SetMergeCost(mergeCost);
|
---|
3297 |
|
---|
3298 | float volume = 0;
|
---|
3299 |
|
---|
3300 | BspNode *front = interior->GetFront();
|
---|
3301 | BspNode *back = interior->GetBack();
|
---|
3302 |
|
---|
3303 |
|
---|
3304 | ////////////
|
---|
3305 | //-- recursivly compute child hierarchies
|
---|
3306 |
|
---|
3307 | ViewCell *backVc = ConstructSpatialMergeTree(back);
|
---|
3308 | ViewCell *frontVc = ConstructSpatialMergeTree(front);
|
---|
3309 |
|
---|
3310 | viewCellInterior->SetupChildLink(backVc);
|
---|
3311 | viewCellInterior->SetupChildLink(frontVc);
|
---|
3312 |
|
---|
3313 | volume += backVc->GetVolume();
|
---|
3314 | volume += frontVc->GetVolume();
|
---|
3315 |
|
---|
3316 | viewCellInterior->SetVolume(volume);
|
---|
3317 |
|
---|
3318 | return viewCellInterior;
|
---|
3319 | }
|
---|
3320 |
|
---|
3321 |
|
---|
3322 | /************************************************************************/
|
---|
3323 | /* KdViewCellsManager implementation */
|
---|
3324 | /************************************************************************/
|
---|
3325 |
|
---|
3326 |
|
---|
3327 |
|
---|
3328 | KdViewCellsManager::KdViewCellsManager(ViewCellsTree *vcTree, KdTree *kdTree):
|
---|
3329 | ViewCellsManager(vcTree), mKdTree(kdTree), mKdPvsDepth(100)
|
---|
3330 | {
|
---|
3331 | }
|
---|
3332 |
|
---|
3333 |
|
---|
3334 | float KdViewCellsManager::GetProbability(ViewCell *viewCell)
|
---|
3335 | {
|
---|
3336 | // compute view cell area / volume as subsititute for probability
|
---|
3337 | if (0)
|
---|
3338 | return GetArea(viewCell) / GetViewSpaceBox().SurfaceArea();
|
---|
3339 | else
|
---|
3340 | return GetVolume(viewCell) / GetViewSpaceBox().GetVolume();
|
---|
3341 | }
|
---|
3342 |
|
---|
3343 |
|
---|
3344 |
|
---|
3345 |
|
---|
3346 | void KdViewCellsManager::CollectViewCells()
|
---|
3347 | {
|
---|
3348 | //mKdTree->CollectViewCells(mViewCells); TODO
|
---|
3349 | }
|
---|
3350 |
|
---|
3351 |
|
---|
3352 | int KdViewCellsManager::ConstructSubdivision(const ObjectContainer &objects,
|
---|
3353 | const VssRayContainer &rays)
|
---|
3354 | {
|
---|
3355 | // if view cells already constructed
|
---|
3356 | if (ViewCellsConstructed())
|
---|
3357 | return 0;
|
---|
3358 |
|
---|
3359 | mKdTree->Construct();
|
---|
3360 |
|
---|
3361 | mTotalAreaValid = false;
|
---|
3362 | // create the view cells
|
---|
3363 | mKdTree->CreateAndCollectViewCells(mViewCells);
|
---|
3364 | // cast rays
|
---|
3365 | ComputeSampleContributions(rays, true, false);
|
---|
3366 |
|
---|
3367 | EvaluateViewCellsStats();
|
---|
3368 | Debug << "\nView cells after construction:\n" << mCurrentViewCellsStats << endl;
|
---|
3369 |
|
---|
3370 | return 0;
|
---|
3371 | }
|
---|
3372 |
|
---|
3373 |
|
---|
3374 | bool KdViewCellsManager::ViewCellsConstructed() const
|
---|
3375 | {
|
---|
3376 | return mKdTree->GetRoot() != NULL;
|
---|
3377 | }
|
---|
3378 |
|
---|
3379 |
|
---|
3380 | int KdViewCellsManager::PostProcess(const ObjectContainer &objects,
|
---|
3381 | const VssRayContainer &rays)
|
---|
3382 | {
|
---|
3383 | return 0;
|
---|
3384 | }
|
---|
3385 |
|
---|
3386 |
|
---|
3387 | void KdViewCellsManager::ExportSingleViewCells(const ObjectContainer &objects,
|
---|
3388 | const int maxViewCells,
|
---|
3389 | const bool sortViewCells,
|
---|
3390 | const bool exportPvs,
|
---|
3391 | const bool exportRays,
|
---|
3392 | const int maxRays,
|
---|
3393 | const string prefix,
|
---|
3394 | VssRayContainer *visRays)
|
---|
3395 | {
|
---|
3396 | // TODO
|
---|
3397 | }
|
---|
3398 |
|
---|
3399 |
|
---|
3400 | void KdViewCellsManager::Visualize(const ObjectContainer &objects,
|
---|
3401 | const VssRayContainer &sampleRays)
|
---|
3402 | {
|
---|
3403 | if (!ViewCellsConstructed())
|
---|
3404 | return;
|
---|
3405 |
|
---|
3406 | // using view cells instead of the kd PVS of objects
|
---|
3407 | const bool useViewCells = true;
|
---|
3408 | bool exportRays = false;
|
---|
3409 |
|
---|
3410 | int limit = min(mVisualizationSamples, (int)sampleRays.size());
|
---|
3411 | const int pvsOut = min((int)objects.size(), 10);
|
---|
3412 | VssRayContainer *rays = new VssRayContainer[pvsOut];
|
---|
3413 |
|
---|
3414 | if (useViewCells)
|
---|
3415 | {
|
---|
3416 | const int leafOut = 10;
|
---|
3417 |
|
---|
3418 | ViewCell::NewMail();
|
---|
3419 |
|
---|
3420 | //-- some rays for output
|
---|
3421 | const int raysOut = min((int)sampleRays.size(), mVisualizationSamples);
|
---|
3422 | Debug << "visualization using " << raysOut << " samples" << endl;
|
---|
3423 |
|
---|
3424 | //-- some random view cells and rays for output
|
---|
3425 | vector<KdLeaf *> kdLeaves;
|
---|
3426 |
|
---|
3427 | for (int i = 0; i < leafOut; ++ i)
|
---|
3428 | kdLeaves.push_back(dynamic_cast<KdLeaf *>(mKdTree->GetRandomLeaf()));
|
---|
3429 |
|
---|
3430 | for (int i = 0; i < kdLeaves.size(); ++ i)
|
---|
3431 | {
|
---|
3432 | KdLeaf *leaf = kdLeaves[i];
|
---|
3433 | RayContainer vcRays;
|
---|
3434 |
|
---|
3435 | cout << "creating output for view cell " << i << " ... ";
|
---|
3436 | #if 0
|
---|
3437 | // check whether we can add the current ray to the output rays
|
---|
3438 | for (int k = 0; k < raysOut; ++ k)
|
---|
3439 | {
|
---|
3440 | Ray *ray = sampleRays[k];
|
---|
3441 |
|
---|
3442 | for (int j = 0; j < (int)ray->bspIntersections.size(); ++ j)
|
---|
3443 | {
|
---|
3444 | BspLeaf *leaf2 = ray->bspIntersections[j].mLeaf;
|
---|
3445 |
|
---|
3446 | if (leaf->GetViewCell() == leaf2->GetViewCell())
|
---|
3447 | {
|
---|
3448 | vcRays.push_back(ray);
|
---|
3449 | }
|
---|
3450 | }
|
---|
3451 | }
|
---|
3452 | #endif
|
---|
3453 | Intersectable::NewMail();
|
---|
3454 |
|
---|
3455 | ViewCell *vc = leaf->mViewCell;
|
---|
3456 | char str[64]; sprintf(str, "viewcell%04d.wrl", i);
|
---|
3457 |
|
---|
3458 | Exporter *exporter = Exporter::GetExporter(str);
|
---|
3459 | exporter->SetFilled();
|
---|
3460 |
|
---|
3461 | exporter->SetWireframe();
|
---|
3462 | //exporter->SetFilled();
|
---|
3463 |
|
---|
3464 | Material m;//= RandomMaterial();
|
---|
3465 | m.mDiffuseColor = RgbColor(1, 1, 0);
|
---|
3466 | exporter->SetForcedMaterial(m);
|
---|
3467 |
|
---|
3468 | AxisAlignedBox3 box = mKdTree->GetBox(leaf);
|
---|
3469 | exporter->ExportBox(box);
|
---|
3470 |
|
---|
3471 | // export rays piercing this view cell
|
---|
3472 | exporter->ExportRays(vcRays, 1000, RgbColor(0, 1, 0));
|
---|
3473 |
|
---|
3474 | m.mDiffuseColor = RgbColor(1, 0, 0);
|
---|
3475 | exporter->SetForcedMaterial(m);
|
---|
3476 |
|
---|
3477 | // exporter->SetWireframe();
|
---|
3478 | exporter->SetFilled();
|
---|
3479 |
|
---|
3480 | ObjectPvsMap::iterator it, it_end = vc->GetPvs().mEntries.end();
|
---|
3481 | // -- output PVS of view cell
|
---|
3482 | for (it = vc->GetPvs().mEntries.begin(); it != it_end; ++ it)
|
---|
3483 | {
|
---|
3484 | Intersectable *intersect = (*it).first;
|
---|
3485 | if (!intersect->Mailed())
|
---|
3486 | {
|
---|
3487 | exporter->ExportIntersectable(intersect);
|
---|
3488 | intersect->Mail();
|
---|
3489 | }
|
---|
3490 | }
|
---|
3491 |
|
---|
3492 | DEL_PTR(exporter);
|
---|
3493 | cout << "finished" << endl;
|
---|
3494 | }
|
---|
3495 |
|
---|
3496 | DEL_PTR(rays);
|
---|
3497 | }
|
---|
3498 | else // using kd PVS of objects
|
---|
3499 | {
|
---|
3500 | for (int i = 0; i < limit; ++ i)
|
---|
3501 | {
|
---|
3502 | VssRay *ray = sampleRays[i];
|
---|
3503 |
|
---|
3504 | // check whether we can add this to the rays
|
---|
3505 | for (int j = 0; j < pvsOut; j++)
|
---|
3506 | {
|
---|
3507 | if (objects[j] == ray->mTerminationObject)
|
---|
3508 | {
|
---|
3509 | rays[j].push_back(ray);
|
---|
3510 | }
|
---|
3511 | }
|
---|
3512 | }
|
---|
3513 |
|
---|
3514 | if (exportRays)
|
---|
3515 | {
|
---|
3516 | Exporter *exporter = NULL;
|
---|
3517 | exporter = Exporter::GetExporter("sample-rays.x3d");
|
---|
3518 | exporter->SetWireframe();
|
---|
3519 | exporter->ExportKdTree(*mKdTree);
|
---|
3520 |
|
---|
3521 | for (i = 0; i < pvsOut; i++)
|
---|
3522 | exporter->ExportRays(rays[i], RgbColor(1, 0, 0));
|
---|
3523 |
|
---|
3524 | exporter->SetFilled();
|
---|
3525 | delete exporter;
|
---|
3526 | }
|
---|
3527 |
|
---|
3528 | for (int k=0; k < pvsOut; k++)
|
---|
3529 | {
|
---|
3530 | Intersectable *object = objects[k];
|
---|
3531 | char str[64]; sprintf(str, "viewcell%04d.wrl", i);
|
---|
3532 |
|
---|
3533 | Exporter *exporter = Exporter::GetExporter(str);
|
---|
3534 | exporter->SetWireframe();
|
---|
3535 |
|
---|
3536 | KdPvsMap::iterator kit = object->mKdPvs.mEntries.begin();
|
---|
3537 | Intersectable::NewMail();
|
---|
3538 |
|
---|
3539 | // avoid adding the object to the list
|
---|
3540 | object->Mail();
|
---|
3541 | ObjectContainer visibleObjects;
|
---|
3542 |
|
---|
3543 | for (; kit != object->mKdPvs.mEntries.end(); i++)
|
---|
3544 | {
|
---|
3545 | KdNode *node = (*kit).first;
|
---|
3546 | exporter->ExportBox(mKdTree->GetBox(node));
|
---|
3547 |
|
---|
3548 | mKdTree->CollectObjects(node, visibleObjects);
|
---|
3549 | }
|
---|
3550 |
|
---|
3551 | exporter->ExportRays(rays[k], RgbColor(0, 1, 0));
|
---|
3552 | exporter->SetFilled();
|
---|
3553 |
|
---|
3554 | for (int j = 0; j < visibleObjects.size(); j++)
|
---|
3555 | exporter->ExportIntersectable(visibleObjects[j]);
|
---|
3556 |
|
---|
3557 | Material m;
|
---|
3558 | m.mDiffuseColor = RgbColor(1, 0, 0);
|
---|
3559 | exporter->SetForcedMaterial(m);
|
---|
3560 | exporter->ExportIntersectable(object);
|
---|
3561 |
|
---|
3562 | delete exporter;
|
---|
3563 | }
|
---|
3564 | }
|
---|
3565 | }
|
---|
3566 |
|
---|
3567 |
|
---|
3568 | ViewCell *KdViewCellsManager::GenerateViewCell(Mesh *mesh) const
|
---|
3569 | {
|
---|
3570 | return new KdViewCell(mesh);
|
---|
3571 | }
|
---|
3572 |
|
---|
3573 |
|
---|
3574 | void KdViewCellsManager::ExportViewCellGeometry(Exporter *exporter,
|
---|
3575 | ViewCell *vc,
|
---|
3576 | const AxisAlignedBox3 *sceneBox,
|
---|
3577 | const AxisAlignedPlane *clipPlane
|
---|
3578 | ) const
|
---|
3579 | {
|
---|
3580 | ViewCellContainer leaves;
|
---|
3581 | mViewCellsTree->CollectLeaves(vc, leaves);
|
---|
3582 | ViewCellContainer::const_iterator it, it_end = leaves.end();
|
---|
3583 |
|
---|
3584 | for (it = leaves.begin(); it != it_end; ++ it)
|
---|
3585 | {
|
---|
3586 | KdViewCell *kdVc = dynamic_cast<KdViewCell *>(*it);
|
---|
3587 | exporter->ExportBox(mKdTree->GetBox(kdVc->mLeaves[0]));
|
---|
3588 | }
|
---|
3589 | }
|
---|
3590 |
|
---|
3591 |
|
---|
3592 | int KdViewCellsManager::GetType() const
|
---|
3593 | {
|
---|
3594 | return ViewCellsManager::KD;
|
---|
3595 | }
|
---|
3596 |
|
---|
3597 |
|
---|
3598 |
|
---|
3599 | KdNode *KdViewCellsManager::GetNodeForPvs(KdLeaf *leaf)
|
---|
3600 | {
|
---|
3601 | KdNode *node = leaf;
|
---|
3602 |
|
---|
3603 | while (node->mParent && node->mDepth > mKdPvsDepth)
|
---|
3604 | node = node->mParent;
|
---|
3605 |
|
---|
3606 | return node;
|
---|
3607 | }
|
---|
3608 |
|
---|
3609 | int KdViewCellsManager::CastLineSegment(const Vector3 &origin,
|
---|
3610 | const Vector3 &termination,
|
---|
3611 | ViewCellContainer &viewcells)
|
---|
3612 | {
|
---|
3613 | return mKdTree->CastLineSegment(origin, termination, viewcells);
|
---|
3614 | }
|
---|
3615 |
|
---|
3616 |
|
---|
3617 | void KdViewCellsManager::CreateMesh(ViewCell *vc)
|
---|
3618 | {
|
---|
3619 | // TODO
|
---|
3620 | }
|
---|
3621 |
|
---|
3622 |
|
---|
3623 |
|
---|
3624 | void KdViewCellsManager::CollectMergeCandidates(const VssRayContainer &rays,
|
---|
3625 | vector<MergeCandidate> &candidates)
|
---|
3626 | {
|
---|
3627 | // TODO
|
---|
3628 | }
|
---|
3629 |
|
---|
3630 |
|
---|
3631 |
|
---|
3632 | /**************************************************************************/
|
---|
3633 | /* VspBspViewCellsManager implementation */
|
---|
3634 | /**************************************************************************/
|
---|
3635 |
|
---|
3636 |
|
---|
3637 | VspBspViewCellsManager::VspBspViewCellsManager(ViewCellsTree *vcTree, VspBspTree *vspBspTree):
|
---|
3638 | ViewCellsManager(vcTree), mVspBspTree(vspBspTree)
|
---|
3639 | {
|
---|
3640 | Environment::GetSingleton()->GetIntValue("VspBspTree.Construction.samples", mInitialSamples);
|
---|
3641 | mVspBspTree->SetViewCellsManager(this);
|
---|
3642 | mVspBspTree->mViewCellsTree = mViewCellsTree;
|
---|
3643 | }
|
---|
3644 |
|
---|
3645 |
|
---|
3646 | VspBspViewCellsManager::~VspBspViewCellsManager()
|
---|
3647 | {
|
---|
3648 | }
|
---|
3649 |
|
---|
3650 |
|
---|
3651 | float VspBspViewCellsManager::GetProbability(ViewCell *viewCell)
|
---|
3652 | {
|
---|
3653 | if (0 && mVspBspTree->mUseAreaForPvs)
|
---|
3654 | return GetArea(viewCell) / GetAccVcArea();
|
---|
3655 | else
|
---|
3656 | return GetVolume(viewCell) / mViewSpaceBox.GetVolume();
|
---|
3657 | }
|
---|
3658 |
|
---|
3659 |
|
---|
3660 | void VspBspViewCellsManager::CollectViewCells()
|
---|
3661 | {
|
---|
3662 | // view cells tree constructed?
|
---|
3663 | if (!ViewCellsTreeConstructed())
|
---|
3664 | {
|
---|
3665 | mVspBspTree->CollectViewCells(mViewCells, false);
|
---|
3666 | }
|
---|
3667 | else
|
---|
3668 | {
|
---|
3669 | // we can use the view cells tree hierarchy to get the right set
|
---|
3670 | mViewCellsTree->CollectBestViewCellSet(mViewCells, mNumActiveViewCells);
|
---|
3671 | }
|
---|
3672 | }
|
---|
3673 |
|
---|
3674 |
|
---|
3675 | void VspBspViewCellsManager::CollectMergeCandidates(const VssRayContainer &rays,
|
---|
3676 | vector<MergeCandidate> &candidates)
|
---|
3677 | {
|
---|
3678 | cout << "collecting merge candidates ... " << endl;
|
---|
3679 |
|
---|
3680 | if (mUseRaysForMerge)
|
---|
3681 | {
|
---|
3682 | mVspBspTree->CollectMergeCandidates(rays, candidates);
|
---|
3683 | }
|
---|
3684 | else
|
---|
3685 | {
|
---|
3686 | vector<BspLeaf *> leaves;
|
---|
3687 | mVspBspTree->CollectLeaves(leaves);
|
---|
3688 |
|
---|
3689 | mVspBspTree->CollectMergeCandidates(leaves, candidates);
|
---|
3690 | }
|
---|
3691 |
|
---|
3692 | cout << "fininshed collecting candidates" << endl;
|
---|
3693 | }
|
---|
3694 |
|
---|
3695 |
|
---|
3696 | bool VspBspViewCellsManager::ViewCellsConstructed() const
|
---|
3697 | {
|
---|
3698 | return mVspBspTree->GetRoot() != NULL;
|
---|
3699 | }
|
---|
3700 |
|
---|
3701 |
|
---|
3702 | ViewCell *VspBspViewCellsManager::GenerateViewCell(Mesh *mesh) const
|
---|
3703 | {
|
---|
3704 | return new BspViewCell(mesh);
|
---|
3705 | }
|
---|
3706 |
|
---|
3707 |
|
---|
3708 | int VspBspViewCellsManager::ConstructSubdivision(const ObjectContainer &objects,
|
---|
3709 | const VssRayContainer &rays)
|
---|
3710 | {
|
---|
3711 | mMaxPvsSize = (int)(mMaxPvsRatio * (float)objects.size());
|
---|
3712 |
|
---|
3713 | // if view cells were already constructed
|
---|
3714 | if (ViewCellsConstructed())
|
---|
3715 | {
|
---|
3716 | return 0;
|
---|
3717 | }
|
---|
3718 |
|
---|
3719 | int sampleContributions = 0;
|
---|
3720 | VssRayContainer sampleRays;
|
---|
3721 |
|
---|
3722 | const int limit = min(mInitialSamples, (int)rays.size());
|
---|
3723 |
|
---|
3724 | Debug << "samples used for vsp bsp subdivision: " << mInitialSamples
|
---|
3725 | << ", actual rays: " << (int)rays.size() << endl;
|
---|
3726 |
|
---|
3727 | VssRayContainer savedRays;
|
---|
3728 |
|
---|
3729 | if (SAMPLE_AFTER_SUBDIVISION)
|
---|
3730 | {
|
---|
3731 | VssRayContainer constructionRays;
|
---|
3732 |
|
---|
3733 | GetRaySets(rays, mInitialSamples, constructionRays, &savedRays);
|
---|
3734 |
|
---|
3735 | Debug << "rays used for initial construction: " << (int)constructionRays.size() << endl;
|
---|
3736 | Debug << "rays saved for later use: " << (int)savedRays.size() << endl;
|
---|
3737 |
|
---|
3738 | mVspBspTree->Construct(constructionRays, &mViewSpaceBox);
|
---|
3739 | }
|
---|
3740 | else
|
---|
3741 | {
|
---|
3742 | Debug << "rays used for initial construction: " << (int)rays.size() << endl;
|
---|
3743 | mVspBspTree->Construct(rays, &mViewSpaceBox);
|
---|
3744 | }
|
---|
3745 |
|
---|
3746 | // collapse invalid regions
|
---|
3747 | cout << "collapsing invalid tree regions ... ";
|
---|
3748 | long startTime = GetTime();
|
---|
3749 |
|
---|
3750 | const int collapsedLeaves = mVspBspTree->CollapseTree();
|
---|
3751 | Debug << "collapsed in " << TimeDiff(startTime, GetTime()) * 1e-3
|
---|
3752 | << " seconds" << endl;
|
---|
3753 |
|
---|
3754 | cout << "finished" << endl;
|
---|
3755 |
|
---|
3756 | /////////////////
|
---|
3757 | //-- stats after construction
|
---|
3758 |
|
---|
3759 | Debug << mVspBspTree->GetStatistics() << endl;
|
---|
3760 |
|
---|
3761 | ResetViewCells();
|
---|
3762 | Debug << "\nView cells after construction:\n" << mCurrentViewCellsStats << endl;
|
---|
3763 |
|
---|
3764 |
|
---|
3765 | //////////////////////
|
---|
3766 | //-- recast the rest of the rays
|
---|
3767 |
|
---|
3768 | startTime = GetTime();
|
---|
3769 |
|
---|
3770 | cout << "Computing remaining ray contributions ... ";
|
---|
3771 |
|
---|
3772 | if (SAMPLE_AFTER_SUBDIVISION)
|
---|
3773 | ComputeSampleContributions(savedRays, true, false);
|
---|
3774 |
|
---|
3775 | cout << "finished" << endl;
|
---|
3776 |
|
---|
3777 | Debug << "Computed remaining ray contribution in " << TimeDiff(startTime, GetTime()) * 1e-3
|
---|
3778 | << " secs" << endl;
|
---|
3779 |
|
---|
3780 | cout << "construction finished" << endl;
|
---|
3781 |
|
---|
3782 | if (0)
|
---|
3783 | { ////////
|
---|
3784 | //-- real meshes are contructed at this stage
|
---|
3785 | cout << "finalizing view cells ... ";
|
---|
3786 | FinalizeViewCells(true);
|
---|
3787 | cout << "finished" << endl;
|
---|
3788 | }
|
---|
3789 |
|
---|
3790 | return sampleContributions;
|
---|
3791 | }
|
---|
3792 |
|
---|
3793 |
|
---|
3794 | void VspBspViewCellsManager::MergeViewCells(const VssRayContainer &rays,
|
---|
3795 | const ObjectContainer &objects)
|
---|
3796 | {
|
---|
3797 | int vcSize = 0;
|
---|
3798 | int pvsSize = 0;
|
---|
3799 |
|
---|
3800 | //-- merge view cells
|
---|
3801 | cout << "starting merge using " << mPostProcessSamples << " samples ... " << endl;
|
---|
3802 | long startTime = GetTime();
|
---|
3803 |
|
---|
3804 |
|
---|
3805 | if (mMergeViewCells)
|
---|
3806 | {
|
---|
3807 | // TODO: should be done BEFORE the ray casting
|
---|
3808 | // compute tree by merging the nodes based on cost heuristics
|
---|
3809 | mViewCellsTree->ConstructMergeTree(rays, objects);
|
---|
3810 | }
|
---|
3811 | else
|
---|
3812 | {
|
---|
3813 | // compute tree by merging the nodes of the spatial hierarchy
|
---|
3814 | ViewCell *root = ConstructSpatialMergeTree(mVspBspTree->GetRoot());
|
---|
3815 | mViewCellsTree->SetRoot(root);
|
---|
3816 |
|
---|
3817 | // compute pvs
|
---|
3818 | ObjectPvs pvs;
|
---|
3819 | UpdatePvsForEvaluation(root, pvs);
|
---|
3820 | }
|
---|
3821 |
|
---|
3822 | if (1)
|
---|
3823 | {
|
---|
3824 | char mstats[100];
|
---|
3825 | ObjectPvs pvs;
|
---|
3826 |
|
---|
3827 | Environment::GetSingleton()->GetStringValue("ViewCells.mergeStats", mstats);
|
---|
3828 | mViewCellsTree->ExportStats(mstats);
|
---|
3829 | }
|
---|
3830 |
|
---|
3831 | cout << "merged view cells in "
|
---|
3832 | << TimeDiff(startTime, GetTime()) *1e-3 << " secs" << endl;
|
---|
3833 |
|
---|
3834 | Debug << "Postprocessing: Merged view cells in "
|
---|
3835 | << TimeDiff(startTime, GetTime()) *1e-3 << " secs" << endl << endl;
|
---|
3836 |
|
---|
3837 |
|
---|
3838 | //////////////////
|
---|
3839 | //-- stats and visualizations
|
---|
3840 |
|
---|
3841 | int savedColorCode = mColorCode;
|
---|
3842 |
|
---|
3843 | // get currently active view cell set
|
---|
3844 | ResetViewCells();
|
---|
3845 | Debug << "\nView cells after merge:\n" << mCurrentViewCellsStats << endl;
|
---|
3846 |
|
---|
3847 | if (1) // export merged view cells
|
---|
3848 | {
|
---|
3849 | mColorCode = 0;
|
---|
3850 | Exporter *exporter = Exporter::GetExporter("merged_view_cells.wrl");
|
---|
3851 |
|
---|
3852 | cout << "exporting view cells after merge ... ";
|
---|
3853 |
|
---|
3854 | if (exporter)
|
---|
3855 | {
|
---|
3856 | if (0)
|
---|
3857 | exporter->SetWireframe();
|
---|
3858 | else
|
---|
3859 | exporter->SetFilled();
|
---|
3860 |
|
---|
3861 | ExportViewCellsForViz(exporter, NULL, GetClipPlane());
|
---|
3862 |
|
---|
3863 | if (mExportGeometry)
|
---|
3864 | {
|
---|
3865 | Material m;
|
---|
3866 | m.mDiffuseColor = RgbColor(0, 1, 0);
|
---|
3867 | exporter->SetForcedMaterial(m);
|
---|
3868 | exporter->SetFilled();
|
---|
3869 |
|
---|
3870 | exporter->ExportGeometry(objects);
|
---|
3871 | }
|
---|
3872 |
|
---|
3873 | delete exporter;
|
---|
3874 | }
|
---|
3875 | cout << "finished" << endl;
|
---|
3876 | }
|
---|
3877 |
|
---|
3878 | if (1)
|
---|
3879 | {
|
---|
3880 | // use pvs size for color coding
|
---|
3881 | mColorCode = 1;
|
---|
3882 | Exporter *exporter = Exporter::GetExporter("merged_view_cells_pvs.wrl");
|
---|
3883 |
|
---|
3884 | cout << "exporting view cells after merge (pvs size) ... ";
|
---|
3885 |
|
---|
3886 | if (exporter)
|
---|
3887 | {
|
---|
3888 | exporter->SetFilled();
|
---|
3889 |
|
---|
3890 | ExportViewCellsForViz(exporter, NULL, GetClipPlane());
|
---|
3891 |
|
---|
3892 | if (mExportGeometry)
|
---|
3893 | {
|
---|
3894 | Material m;
|
---|
3895 | m.mDiffuseColor = RgbColor(0, 1, 0);
|
---|
3896 | exporter->SetForcedMaterial(m);
|
---|
3897 | exporter->SetFilled();
|
---|
3898 |
|
---|
3899 | exporter->ExportGeometry(objects);
|
---|
3900 | }
|
---|
3901 |
|
---|
3902 | delete exporter;
|
---|
3903 | }
|
---|
3904 | cout << "finished" << endl;
|
---|
3905 | }
|
---|
3906 |
|
---|
3907 | mColorCode = savedColorCode;
|
---|
3908 |
|
---|
3909 | }
|
---|
3910 |
|
---|
3911 |
|
---|
3912 | bool VspBspViewCellsManager::EqualToSpatialNode(ViewCell *viewCell) const
|
---|
3913 | {
|
---|
3914 | return GetSpatialNode(viewCell) != NULL;
|
---|
3915 | }
|
---|
3916 |
|
---|
3917 |
|
---|
3918 | BspNode *VspBspViewCellsManager::GetSpatialNode(ViewCell *viewCell) const
|
---|
3919 | {
|
---|
3920 | if (!viewCell->IsLeaf())
|
---|
3921 | {
|
---|
3922 | BspViewCell *bspVc = dynamic_cast<BspViewCell *>(viewCell);
|
---|
3923 | return bspVc->mLeaves[0];
|
---|
3924 | }
|
---|
3925 | else
|
---|
3926 | {
|
---|
3927 | ViewCellInterior *interior = dynamic_cast<ViewCellInterior *>(viewCell);
|
---|
3928 |
|
---|
3929 | // cannot be node of binary tree
|
---|
3930 | if (interior->mChildren.size() != 2)
|
---|
3931 | return NULL;
|
---|
3932 |
|
---|
3933 | ViewCell *left = interior->mChildren[0];
|
---|
3934 | ViewCell *right = interior->mChildren[1];
|
---|
3935 |
|
---|
3936 | BspNode *leftNode = GetSpatialNode(left);
|
---|
3937 | BspNode *rightNode = GetSpatialNode(right);
|
---|
3938 |
|
---|
3939 | if (leftNode && rightNode && leftNode->IsSibling(rightNode))
|
---|
3940 | {
|
---|
3941 | return leftNode->GetParent();
|
---|
3942 | }
|
---|
3943 | }
|
---|
3944 |
|
---|
3945 | return NULL;
|
---|
3946 | }
|
---|
3947 |
|
---|
3948 |
|
---|
3949 | void VspBspViewCellsManager::RefineViewCells(const VssRayContainer &rays,
|
---|
3950 | const ObjectContainer &objects)
|
---|
3951 | {
|
---|
3952 | mRenderer->RenderScene();
|
---|
3953 | SimulationStatistics ss;
|
---|
3954 | dynamic_cast<RenderSimulator *>(mRenderer)->GetStatistics(ss);
|
---|
3955 | Debug << "render time before refine\n\n" << ss << endl;
|
---|
3956 |
|
---|
3957 | const long startTime = GetTime();
|
---|
3958 | cout << "Refining the merged view cells ... ";
|
---|
3959 |
|
---|
3960 | // refining the merged view cells
|
---|
3961 | const int refined = mViewCellsTree->RefineViewCells(rays, objects);
|
---|
3962 |
|
---|
3963 | //-- stats and visualizations
|
---|
3964 | cout << "finished" << endl;
|
---|
3965 | cout << "refined " << refined << " view cells in "
|
---|
3966 | << TimeDiff(startTime, GetTime()) *1e-3 << " secs" << endl;
|
---|
3967 |
|
---|
3968 | Debug << "Postprocessing: refined " << refined << " view cells in "
|
---|
3969 | << TimeDiff(startTime, GetTime()) *1e-3 << " secs" << endl << endl;
|
---|
3970 | }
|
---|
3971 |
|
---|
3972 |
|
---|
3973 | int VspBspViewCellsManager::PostProcess(const ObjectContainer &objects,
|
---|
3974 | const VssRayContainer &rays)
|
---|
3975 | {
|
---|
3976 | if (!ViewCellsConstructed())
|
---|
3977 | {
|
---|
3978 | Debug << "postprocess error: no view cells constructed" << endl;
|
---|
3979 | return 0;
|
---|
3980 | }
|
---|
3981 |
|
---|
3982 | // view cells already finished before post processing step
|
---|
3983 | // (i.e. because they were loaded)
|
---|
3984 | if (mViewCellsFinished)
|
---|
3985 | {
|
---|
3986 | FinalizeViewCells(true);
|
---|
3987 | EvaluateViewCellsStats();
|
---|
3988 |
|
---|
3989 | return 0;
|
---|
3990 | }
|
---|
3991 |
|
---|
3992 | // check if new view cells turned invalid
|
---|
3993 | int minPvs, maxPvs;
|
---|
3994 |
|
---|
3995 | if (0)
|
---|
3996 | {
|
---|
3997 | minPvs = mMinPvsSize;
|
---|
3998 | maxPvs = mMaxPvsSize;
|
---|
3999 | }
|
---|
4000 | else
|
---|
4001 | {
|
---|
4002 | // problem matt: why did I start here from zero?
|
---|
4003 | minPvs = 0;
|
---|
4004 | maxPvs = mMaxPvsSize;
|
---|
4005 | }
|
---|
4006 |
|
---|
4007 | Debug << "setting validity, min: " << minPvs << " max: " << maxPvs << endl;
|
---|
4008 | cout << "setting validity, min: " << minPvs << " max: " << maxPvs << endl;
|
---|
4009 |
|
---|
4010 | SetValidity(minPvs, maxPvs);
|
---|
4011 |
|
---|
4012 | // update valid view space according to valid view cells
|
---|
4013 | if (0) mVspBspTree->ValidateTree();
|
---|
4014 |
|
---|
4015 | // area has to be recomputed
|
---|
4016 | mTotalAreaValid = false;
|
---|
4017 | VssRayContainer postProcessRays;
|
---|
4018 | GetRaySets(rays, mPostProcessSamples, postProcessRays);
|
---|
4019 |
|
---|
4020 | Debug << "post processing using " << (int)postProcessRays.size() << " samples" << endl;
|
---|
4021 |
|
---|
4022 | // should maybe be done here to allow merge working
|
---|
4023 | // with area or volume and to correct the rendering statistics
|
---|
4024 | if (0) FinalizeViewCells(false);
|
---|
4025 |
|
---|
4026 | //////////
|
---|
4027 | //-- merge the individual view cells
|
---|
4028 | MergeViewCells(postProcessRays, objects);
|
---|
4029 |
|
---|
4030 | // refines the merged view cells
|
---|
4031 | if (0) RefineViewCells(postProcessRays, objects);
|
---|
4032 |
|
---|
4033 |
|
---|
4034 | ///////////
|
---|
4035 | //-- render simulation after merge + refine
|
---|
4036 |
|
---|
4037 | cout << "\nview cells partition render time before compress" << endl << endl;;
|
---|
4038 | dynamic_cast<RenderSimulator *>(mRenderer)->RenderScene();
|
---|
4039 | SimulationStatistics ss;
|
---|
4040 | dynamic_cast<RenderSimulator *>(mRenderer)->GetStatistics(ss);
|
---|
4041 | cout << ss << endl;
|
---|
4042 |
|
---|
4043 |
|
---|
4044 | ////////////
|
---|
4045 | //-- compression
|
---|
4046 |
|
---|
4047 | if (ViewCellsTreeConstructed() && mCompressViewCells)
|
---|
4048 | {
|
---|
4049 | int pvsEntries = mViewCellsTree->GetStoredPvsEntriesNum(mViewCellsTree->GetRoot());
|
---|
4050 | Debug << "number of entries before compress: " << pvsEntries << endl;
|
---|
4051 |
|
---|
4052 | mViewCellsTree->SetViewCellsStorage(ViewCellsTree::COMPRESSED);
|
---|
4053 |
|
---|
4054 | pvsEntries = mViewCellsTree->GetStoredPvsEntriesNum(mViewCellsTree->GetRoot());
|
---|
4055 | Debug << "number of entries after compress: " << pvsEntries << endl;
|
---|
4056 | }
|
---|
4057 |
|
---|
4058 |
|
---|
4059 | // collapse sibling leaves that share the same view cell
|
---|
4060 | if (0) mVspBspTree->CollapseTree();
|
---|
4061 |
|
---|
4062 | // recompute view cell list and statistics
|
---|
4063 | ResetViewCells();
|
---|
4064 |
|
---|
4065 | // compute final meshes and volume / area
|
---|
4066 | if (1) FinalizeViewCells(true);
|
---|
4067 |
|
---|
4068 | // write view cells to disc
|
---|
4069 | if (1 && mExportViewCells)
|
---|
4070 | {
|
---|
4071 | char filename[100];
|
---|
4072 | Environment::GetSingleton()->GetStringValue("ViewCells.filename", filename);
|
---|
4073 | ExportViewCells(filename, mExportPvs, objects);
|
---|
4074 | }
|
---|
4075 |
|
---|
4076 | return 0;
|
---|
4077 | }
|
---|
4078 |
|
---|
4079 |
|
---|
4080 | int VspBspViewCellsManager::GetType() const
|
---|
4081 | {
|
---|
4082 | return VSP_BSP;
|
---|
4083 | }
|
---|
4084 |
|
---|
4085 |
|
---|
4086 | ViewCell *VspBspViewCellsManager::ConstructSpatialMergeTree(BspNode *root)
|
---|
4087 | {
|
---|
4088 | // terminate recursion
|
---|
4089 | if (root->IsLeaf())
|
---|
4090 | {
|
---|
4091 | BspLeaf *leaf = dynamic_cast<BspLeaf *>(root);
|
---|
4092 | leaf->GetViewCell()->SetMergeCost(0.0f);
|
---|
4093 | return leaf->GetViewCell();
|
---|
4094 | }
|
---|
4095 |
|
---|
4096 |
|
---|
4097 | BspInterior *interior = dynamic_cast<BspInterior *>(root);
|
---|
4098 | ViewCellInterior *viewCellInterior = new ViewCellInterior();
|
---|
4099 |
|
---|
4100 | // evaluate merge cost for priority traversal
|
---|
4101 | float mergeCost = 1.0f / (float)root->mTimeStamp;
|
---|
4102 | viewCellInterior->SetMergeCost(mergeCost);
|
---|
4103 |
|
---|
4104 | float volume = 0;
|
---|
4105 |
|
---|
4106 | BspNode *front = interior->GetFront();
|
---|
4107 | BspNode *back = interior->GetBack();
|
---|
4108 |
|
---|
4109 |
|
---|
4110 | ObjectPvs frontPvs, backPvs;
|
---|
4111 |
|
---|
4112 | //-- recursivly compute child hierarchies
|
---|
4113 | ViewCell *backVc = ConstructSpatialMergeTree(back);
|
---|
4114 | ViewCell *frontVc = ConstructSpatialMergeTree(front);
|
---|
4115 |
|
---|
4116 |
|
---|
4117 | viewCellInterior->SetupChildLink(backVc);
|
---|
4118 | viewCellInterior->SetupChildLink(frontVc);
|
---|
4119 |
|
---|
4120 | volume += backVc->GetVolume();
|
---|
4121 | volume += frontVc->GetVolume();
|
---|
4122 |
|
---|
4123 | viewCellInterior->SetVolume(volume);
|
---|
4124 |
|
---|
4125 | return viewCellInterior;
|
---|
4126 | }
|
---|
4127 |
|
---|
4128 |
|
---|
4129 | bool VspBspViewCellsManager::GetViewPoint(Vector3 &viewPoint) const
|
---|
4130 | {
|
---|
4131 | if (!ViewCellsConstructed())
|
---|
4132 | return ViewCellsManager::GetViewPoint(viewPoint);
|
---|
4133 |
|
---|
4134 | // TODO: set reasonable limit
|
---|
4135 | const int limit = 20;
|
---|
4136 |
|
---|
4137 | for (int i = 0; i < limit; ++ i)
|
---|
4138 | {
|
---|
4139 | viewPoint = mViewSpaceBox.GetRandomPoint();
|
---|
4140 | if (mVspBspTree->ViewPointValid(viewPoint))
|
---|
4141 | {
|
---|
4142 | return true;
|
---|
4143 | }
|
---|
4144 | }
|
---|
4145 |
|
---|
4146 | Debug << "failed to find valid view point, taking " << viewPoint << endl;
|
---|
4147 | return false;
|
---|
4148 | }
|
---|
4149 |
|
---|
4150 |
|
---|
4151 | bool VspBspViewCellsManager::ViewPointValid(const Vector3 &viewPoint) const
|
---|
4152 | {
|
---|
4153 | // $$JB -> implemented in viewcellsmanager (slower, but allows dynamic
|
---|
4154 | // validy update in preprocessor for all managers)
|
---|
4155 | return ViewCellsManager::ViewPointValid(viewPoint);
|
---|
4156 |
|
---|
4157 | // return mViewSpaceBox.IsInside(viewPoint) &&
|
---|
4158 | // mVspBspTree->ViewPointValid(viewPoint);
|
---|
4159 | }
|
---|
4160 |
|
---|
4161 |
|
---|
4162 | void VspBspViewCellsManager::Visualize(const ObjectContainer &objects,
|
---|
4163 | const VssRayContainer &sampleRays)
|
---|
4164 | {
|
---|
4165 | if (!ViewCellsConstructed())
|
---|
4166 | return;
|
---|
4167 |
|
---|
4168 | VssRayContainer visRays;
|
---|
4169 | GetRaySets(sampleRays, mVisualizationSamples, visRays);
|
---|
4170 |
|
---|
4171 | if (1)
|
---|
4172 | {
|
---|
4173 | //////////////////
|
---|
4174 | //-- export final view cell partition
|
---|
4175 |
|
---|
4176 | Exporter *exporter = Exporter::GetExporter("final_view_cells.wrl");
|
---|
4177 |
|
---|
4178 | if (exporter)
|
---|
4179 | {
|
---|
4180 | cout << "exporting view cells after post process ... ";
|
---|
4181 | if (0)
|
---|
4182 | { // export view space box
|
---|
4183 | exporter->SetWireframe();
|
---|
4184 | exporter->ExportBox(mViewSpaceBox);
|
---|
4185 | exporter->SetFilled();
|
---|
4186 | }
|
---|
4187 |
|
---|
4188 | Material m;
|
---|
4189 | m.mDiffuseColor.r = 0.0f;
|
---|
4190 | m.mDiffuseColor.g = 0.5f;
|
---|
4191 | m.mDiffuseColor.b = 0.5f;
|
---|
4192 |
|
---|
4193 | exporter->SetForcedMaterial(m);
|
---|
4194 |
|
---|
4195 | if (1 && mExportGeometry)
|
---|
4196 | {
|
---|
4197 | exporter->ExportGeometry(objects);
|
---|
4198 | }
|
---|
4199 |
|
---|
4200 | if (0 && mExportRays)
|
---|
4201 | {
|
---|
4202 | exporter->ExportRays(visRays, RgbColor(1, 0, 0));
|
---|
4203 | }
|
---|
4204 | ExportViewCellsForViz(exporter, NULL, GetClipPlane());
|
---|
4205 |
|
---|
4206 | delete exporter;
|
---|
4207 | cout << "finished" << endl;
|
---|
4208 | }
|
---|
4209 | }
|
---|
4210 |
|
---|
4211 | ////////////////
|
---|
4212 | //-- visualization of the BSP splits
|
---|
4213 |
|
---|
4214 | bool exportSplits = false;
|
---|
4215 | Environment::GetSingleton()->GetBoolValue("VspBspTree.Visualization.exportSplits", exportSplits);
|
---|
4216 |
|
---|
4217 | if (exportSplits)
|
---|
4218 | {
|
---|
4219 | cout << "exporting splits ... ";
|
---|
4220 | ExportSplits(objects, visRays);
|
---|
4221 | cout << "finished" << endl;
|
---|
4222 | }
|
---|
4223 |
|
---|
4224 | ////////
|
---|
4225 | //-- export single view cells
|
---|
4226 |
|
---|
4227 | int leafOut;
|
---|
4228 | Environment::GetSingleton()->GetIntValue("ViewCells.Visualization.maxOutput", leafOut);
|
---|
4229 | const int raysOut = 100;
|
---|
4230 |
|
---|
4231 | ExportSingleViewCells(objects, leafOut, false, true, false, raysOut, "");
|
---|
4232 | }
|
---|
4233 |
|
---|
4234 |
|
---|
4235 | void VspBspViewCellsManager::ExportSplits(const ObjectContainer &objects,
|
---|
4236 | const VssRayContainer &rays)
|
---|
4237 | {
|
---|
4238 | Exporter *exporter = Exporter::GetExporter("bsp_splits.x3d");
|
---|
4239 |
|
---|
4240 | if (exporter)
|
---|
4241 | {
|
---|
4242 | Material m;
|
---|
4243 | m.mDiffuseColor = RgbColor(1, 0, 0);
|
---|
4244 | exporter->SetForcedMaterial(m);
|
---|
4245 | exporter->SetWireframe();
|
---|
4246 |
|
---|
4247 | exporter->ExportBspSplits(*mVspBspTree, true);
|
---|
4248 |
|
---|
4249 | // take forced material, else big scenes cannot be viewed
|
---|
4250 | m.mDiffuseColor = RgbColor(0, 1, 0);
|
---|
4251 | exporter->SetForcedMaterial(m);
|
---|
4252 | exporter->SetFilled();
|
---|
4253 |
|
---|
4254 | exporter->ResetForcedMaterial();
|
---|
4255 |
|
---|
4256 | // export rays
|
---|
4257 | if (mExportRays)
|
---|
4258 | {
|
---|
4259 | exporter->ExportRays(rays, RgbColor(1, 1, 0));
|
---|
4260 | }
|
---|
4261 |
|
---|
4262 | if (mExportGeometry)
|
---|
4263 | {
|
---|
4264 | exporter->ExportGeometry(objects);
|
---|
4265 | }
|
---|
4266 | delete exporter;
|
---|
4267 | }
|
---|
4268 | }
|
---|
4269 |
|
---|
4270 |
|
---|
4271 | void VspBspViewCellsManager::ExportSingleViewCells(const ObjectContainer &objects,
|
---|
4272 | const int maxViewCells,
|
---|
4273 | const bool sortViewCells,
|
---|
4274 | const bool exportPvs,
|
---|
4275 | const bool exportRays,
|
---|
4276 | const int maxRays,
|
---|
4277 | const string prefix,
|
---|
4278 | VssRayContainer *visRays)
|
---|
4279 | {
|
---|
4280 | if (sortViewCells)
|
---|
4281 | {
|
---|
4282 | // sort view cells to visualize the largest view cells
|
---|
4283 | stable_sort(mViewCells.begin(), mViewCells.end(), ViewCell::LargerRenderCost);
|
---|
4284 | }
|
---|
4285 |
|
---|
4286 | //////////
|
---|
4287 | //-- some view cells for output
|
---|
4288 |
|
---|
4289 | ViewCell::NewMail();
|
---|
4290 | const int limit = min(maxViewCells, (int)mViewCells.size());
|
---|
4291 |
|
---|
4292 | for (int i = 0; i < limit; ++ i)
|
---|
4293 | {
|
---|
4294 | cout << "creating output for view cell " << i << " ... ";
|
---|
4295 |
|
---|
4296 | ViewCell *vc = sortViewCells ? // largest view cell pvs first?
|
---|
4297 | mViewCells[(int)RandomValue(0, (float)mViewCells.size() - 0.5f)] : mViewCells[i];
|
---|
4298 |
|
---|
4299 | if (vc->Mailed() || vc->GetId() == OUT_OF_BOUNDS_ID)
|
---|
4300 | continue;
|
---|
4301 |
|
---|
4302 | vc->Mail();
|
---|
4303 |
|
---|
4304 | ObjectPvs pvs;
|
---|
4305 | mViewCellsTree->GetPvs(vc, pvs);
|
---|
4306 |
|
---|
4307 | char s[64]; sprintf(s, "%sviewcell%04d.wrl", prefix.c_str(), i);
|
---|
4308 | Exporter *exporter = Exporter::GetExporter(s);
|
---|
4309 |
|
---|
4310 | const int pvsSize = (int)mViewCellsTree->GetPvsSize(vc);
|
---|
4311 | cout << "view cell " << vc->GetId() << ": pvs size=" << pvsSize << endl;
|
---|
4312 |
|
---|
4313 | if (exportRays)
|
---|
4314 | {
|
---|
4315 | ////////////
|
---|
4316 | //-- export rays piercing this view cell
|
---|
4317 |
|
---|
4318 | // take rays stored with the view cells during subdivision
|
---|
4319 | VssRayContainer vcRays;
|
---|
4320 | VssRayContainer collectRays;
|
---|
4321 |
|
---|
4322 | // collect initial view cells
|
---|
4323 | ViewCellContainer leaves;
|
---|
4324 | mViewCellsTree->CollectLeaves(vc, leaves);
|
---|
4325 |
|
---|
4326 | ViewCellContainer::const_iterator vit, vit_end = leaves.end();
|
---|
4327 | for (vit = leaves.begin(); vit != vit_end; ++ vit)
|
---|
4328 | {
|
---|
4329 | BspLeaf *vcLeaf = dynamic_cast<BspViewCell *>(*vit)->mLeaves[0];
|
---|
4330 | VssRayContainer::const_iterator rit, rit_end = vcLeaf->mVssRays.end();
|
---|
4331 |
|
---|
4332 | for (rit = vcLeaf->mVssRays.begin(); rit != rit_end; ++ rit)
|
---|
4333 | {
|
---|
4334 | collectRays.push_back(*rit);
|
---|
4335 | }
|
---|
4336 | }
|
---|
4337 |
|
---|
4338 | const int raysOut = min((int)collectRays.size(), maxRays);
|
---|
4339 |
|
---|
4340 | // prepare some rays for output
|
---|
4341 | VssRayContainer::const_iterator rit, rit_end = collectRays.end();
|
---|
4342 | for (rit = collectRays.begin(); rit != rit_end; ++ rit)
|
---|
4343 | {
|
---|
4344 | const float p = RandomValue(0.0f, (float)collectRays.size());
|
---|
4345 |
|
---|
4346 | if (p < raysOut)
|
---|
4347 | {
|
---|
4348 | vcRays.push_back(*rit);
|
---|
4349 | }
|
---|
4350 | }
|
---|
4351 |
|
---|
4352 | exporter->ExportRays(vcRays, RgbColor(1, 1, 1));
|
---|
4353 | }
|
---|
4354 |
|
---|
4355 | ////////////////
|
---|
4356 | //-- export view cell geometry
|
---|
4357 |
|
---|
4358 | exporter->SetWireframe();
|
---|
4359 |
|
---|
4360 | Material m;//= RandomMaterial();
|
---|
4361 | m.mDiffuseColor = RgbColor(0, 1, 0);
|
---|
4362 | exporter->SetForcedMaterial(m);
|
---|
4363 |
|
---|
4364 | ExportViewCellGeometry(exporter, vc, NULL, NULL);
|
---|
4365 | exporter->SetFilled();
|
---|
4366 |
|
---|
4367 | if (exportPvs)
|
---|
4368 | {
|
---|
4369 | Intersectable::NewMail();
|
---|
4370 |
|
---|
4371 | ObjectPvsMap::const_iterator oit, oit_end = pvs.mEntries.end();
|
---|
4372 | cout << endl;
|
---|
4373 | // output PVS of view cell
|
---|
4374 | for (oit = pvs.mEntries.begin(); oit != oit_end; ++ oit)
|
---|
4375 | {
|
---|
4376 | Intersectable *intersect = (*oit).first;
|
---|
4377 |
|
---|
4378 | if (!intersect->Mailed())
|
---|
4379 | {
|
---|
4380 | intersect->Mail();
|
---|
4381 |
|
---|
4382 | m = RandomMaterial();
|
---|
4383 | exporter->SetForcedMaterial(m);
|
---|
4384 | exporter->ExportIntersectable(intersect);
|
---|
4385 | }
|
---|
4386 | }
|
---|
4387 | cout << endl;
|
---|
4388 | }
|
---|
4389 |
|
---|
4390 | DEL_PTR(exporter);
|
---|
4391 | cout << "finished" << endl;
|
---|
4392 | }
|
---|
4393 | }
|
---|
4394 |
|
---|
4395 |
|
---|
4396 | void VspBspViewCellsManager::TestFilter(const ObjectContainer &objects)
|
---|
4397 | {
|
---|
4398 | Exporter *exporter = Exporter::GetExporter("filter.x3d");
|
---|
4399 |
|
---|
4400 | Vector3 bsize = mViewSpaceBox.Size();
|
---|
4401 | const Vector3 viewPoint(mViewSpaceBox.Center());
|
---|
4402 | float w = Magnitude(mViewSpaceBox.Size()) * mFilterWidth;
|
---|
4403 | const Vector3 width = Vector3(w);
|
---|
4404 |
|
---|
4405 | PrVs testPrVs;
|
---|
4406 |
|
---|
4407 | if (exporter)
|
---|
4408 | {
|
---|
4409 | ViewCellContainer viewCells;
|
---|
4410 |
|
---|
4411 | const AxisAlignedBox3 tbox = GetFilterBBox(viewPoint, mFilterWidth);
|
---|
4412 |
|
---|
4413 | GetPrVS(viewPoint, testPrVs, GetFilterWidth());
|
---|
4414 |
|
---|
4415 | exporter->SetWireframe();
|
---|
4416 |
|
---|
4417 | exporter->SetForcedMaterial(RgbColor(1,1,1));
|
---|
4418 | exporter->ExportBox(tbox);
|
---|
4419 |
|
---|
4420 | exporter->SetFilled();
|
---|
4421 |
|
---|
4422 | exporter->SetForcedMaterial(RgbColor(0,1,0));
|
---|
4423 | ExportViewCellGeometry(exporter, GetViewCell(viewPoint), NULL, NULL);
|
---|
4424 |
|
---|
4425 | //exporter->ResetForcedMaterial();
|
---|
4426 | exporter->SetForcedMaterial(RgbColor(0,0,1));
|
---|
4427 | ExportViewCellGeometry(exporter, testPrVs.mViewCell, NULL, NULL);
|
---|
4428 |
|
---|
4429 | exporter->SetForcedMaterial(RgbColor(1,0,0));
|
---|
4430 | exporter->ExportGeometry(objects);
|
---|
4431 |
|
---|
4432 | delete exporter;
|
---|
4433 | }
|
---|
4434 | }
|
---|
4435 |
|
---|
4436 |
|
---|
4437 | int VspBspViewCellsManager::ComputeBoxIntersections(const AxisAlignedBox3 &box,
|
---|
4438 | ViewCellContainer &viewCells) const
|
---|
4439 | {
|
---|
4440 | return mVspBspTree->ComputeBoxIntersections(box, viewCells);
|
---|
4441 | }
|
---|
4442 |
|
---|
4443 |
|
---|
4444 | int VspBspViewCellsManager::CastLineSegment(const Vector3 &origin,
|
---|
4445 | const Vector3 &termination,
|
---|
4446 | ViewCellContainer &viewcells)
|
---|
4447 | {
|
---|
4448 | return mVspBspTree->CastLineSegment(origin, termination, viewcells);
|
---|
4449 | }
|
---|
4450 |
|
---|
4451 |
|
---|
4452 | void VspBspViewCellsManager::VisualizeWithFromPointQueries()
|
---|
4453 | {
|
---|
4454 | int numSamples;
|
---|
4455 |
|
---|
4456 | Environment::GetSingleton()->GetIntValue("RenderSampler.samples", numSamples);
|
---|
4457 | cout << "samples" << numSamples << endl;
|
---|
4458 |
|
---|
4459 | vector<RenderCostSample> samples;
|
---|
4460 |
|
---|
4461 | if (!mPreprocessor->GetRenderer())
|
---|
4462 | return;
|
---|
4463 |
|
---|
4464 | //start the view point queries
|
---|
4465 | long startTime = GetTime();
|
---|
4466 | cout << "starting sampling of render cost ... ";
|
---|
4467 |
|
---|
4468 | mPreprocessor->GetRenderer()->SampleRenderCost(numSamples, samples, true);
|
---|
4469 |
|
---|
4470 | cout << "finished in " << TimeDiff(startTime, GetTime()) * 1e-3 << " secs" << endl;
|
---|
4471 |
|
---|
4472 |
|
---|
4473 | // for each sample:
|
---|
4474 | // find view cells associated with the samples
|
---|
4475 | // store the sample pvs with the pvs associated with the view cell
|
---|
4476 | //
|
---|
4477 | // for each view cell:
|
---|
4478 | // compute difference point sampled pvs - view cell pvs
|
---|
4479 | // export geometry with color coded pvs difference
|
---|
4480 |
|
---|
4481 | std::map<ViewCell *, ObjectPvs> sampleMap;
|
---|
4482 |
|
---|
4483 | vector<RenderCostSample>::const_iterator rit, rit_end = samples.end();
|
---|
4484 |
|
---|
4485 | for (rit = samples.begin(); rit != rit_end; ++ rit)
|
---|
4486 | {
|
---|
4487 | RenderCostSample sample = *rit;
|
---|
4488 |
|
---|
4489 | ViewCell *vc = GetViewCell(sample.mPosition);
|
---|
4490 |
|
---|
4491 | std::map<ViewCell *, ObjectPvs>::iterator it = sampleMap.find(vc);
|
---|
4492 |
|
---|
4493 | if (it == sampleMap.end())
|
---|
4494 | {
|
---|
4495 | sampleMap[vc] = sample.mPvs;
|
---|
4496 | }
|
---|
4497 | else
|
---|
4498 | {
|
---|
4499 | (*it).second.Merge(sample.mPvs);
|
---|
4500 | }
|
---|
4501 | }
|
---|
4502 |
|
---|
4503 | // visualize the view cells
|
---|
4504 | std::map<ViewCell *, ObjectPvs>::const_iterator vit, vit_end = sampleMap.end();
|
---|
4505 |
|
---|
4506 | Material m;//= RandomMaterial();
|
---|
4507 |
|
---|
4508 | for (vit = sampleMap.begin(); vit != vit_end; ++ vit)
|
---|
4509 | {
|
---|
4510 | ViewCell *vc = (*vit).first;
|
---|
4511 |
|
---|
4512 | const int pvsVc = mViewCellsTree->GetPvsEntries(vc);
|
---|
4513 | const int pvsPtSamples = (*vit).second.GetSize();
|
---|
4514 |
|
---|
4515 | m.mDiffuseColor.r = (float) (pvsVc - pvsPtSamples);
|
---|
4516 | m.mDiffuseColor.b = 1.0f;
|
---|
4517 | //exporter->SetForcedMaterial(m);
|
---|
4518 | //ExportViewCellGeometry(exporter, vc, mClipPlaneForViz);
|
---|
4519 |
|
---|
4520 | /* // counting the pvss
|
---|
4521 | for (rit = samples.begin(); rit != rit_end; ++ rit)
|
---|
4522 | {
|
---|
4523 | RenderCostSample sample = *rit;
|
---|
4524 | ViewCell *vc = GetViewCell(sample.mPosition);
|
---|
4525 |
|
---|
4526 | AxisAlignedBox3 box(sample.mPosition - Vector3(1, 1, 1), sample.mPosition + Vector3(1, 1, 1));
|
---|
4527 | Mesh *hMesh = CreateMeshFromBox(box);
|
---|
4528 |
|
---|
4529 | DEL_PTR(hMesh);
|
---|
4530 | }
|
---|
4531 | */
|
---|
4532 | }
|
---|
4533 | }
|
---|
4534 |
|
---|
4535 |
|
---|
4536 | void VspBspViewCellsManager::ExportViewCellGeometry(Exporter *exporter,
|
---|
4537 | ViewCell *vc,
|
---|
4538 | const AxisAlignedBox3 *sceneBox,
|
---|
4539 | const AxisAlignedPlane *clipPlane
|
---|
4540 | ) const
|
---|
4541 | {
|
---|
4542 | if (clipPlane)
|
---|
4543 | {
|
---|
4544 | const Plane3 plane = clipPlane->GetPlane();
|
---|
4545 |
|
---|
4546 | ViewCellContainer leaves;
|
---|
4547 | mViewCellsTree->CollectLeaves(vc, leaves);
|
---|
4548 | ViewCellContainer::const_iterator it, it_end = leaves.end();
|
---|
4549 |
|
---|
4550 | for (it = leaves.begin(); it != it_end; ++ it)
|
---|
4551 | {
|
---|
4552 | BspNodeGeometry geom;
|
---|
4553 | BspNodeGeometry front;
|
---|
4554 | BspNodeGeometry back;
|
---|
4555 |
|
---|
4556 | mVspBspTree->ConstructGeometry(*it, geom);
|
---|
4557 |
|
---|
4558 | const float eps = 0.0001f;
|
---|
4559 | const int cf = geom.Side(plane, eps);
|
---|
4560 |
|
---|
4561 | if (cf == -1)
|
---|
4562 | {
|
---|
4563 | exporter->ExportPolygons(geom.GetPolys());
|
---|
4564 | }
|
---|
4565 | else if (cf == 0)
|
---|
4566 | {
|
---|
4567 | geom.SplitGeometry(front,
|
---|
4568 | back,
|
---|
4569 | plane,
|
---|
4570 | mViewSpaceBox,
|
---|
4571 | eps);
|
---|
4572 |
|
---|
4573 | if (back.Valid())
|
---|
4574 | {
|
---|
4575 | exporter->ExportPolygons(back.GetPolys());
|
---|
4576 | }
|
---|
4577 | }
|
---|
4578 | }
|
---|
4579 | }
|
---|
4580 | else
|
---|
4581 | {
|
---|
4582 | // export mesh if available
|
---|
4583 | // TODO: some bug here?
|
---|
4584 | if (1 && vc->GetMesh())
|
---|
4585 | {
|
---|
4586 | exporter->ExportMesh(vc->GetMesh());
|
---|
4587 | }
|
---|
4588 | else
|
---|
4589 | {
|
---|
4590 | BspNodeGeometry geom;
|
---|
4591 | mVspBspTree->ConstructGeometry(vc, geom);
|
---|
4592 | exporter->ExportPolygons(geom.GetPolys());
|
---|
4593 | }
|
---|
4594 | }
|
---|
4595 | }
|
---|
4596 |
|
---|
4597 |
|
---|
4598 | int VspBspViewCellsManager::GetMaxTreeDiff(ViewCell *vc) const
|
---|
4599 | {
|
---|
4600 | ViewCellContainer leaves;
|
---|
4601 | mViewCellsTree->CollectLeaves(vc, leaves);
|
---|
4602 |
|
---|
4603 | int maxDist = 0;
|
---|
4604 |
|
---|
4605 | // compute max height difference
|
---|
4606 | for (int i = 0; i < (int)leaves.size(); ++ i)
|
---|
4607 | {
|
---|
4608 | for (int j = 0; j < (int)leaves.size(); ++ j)
|
---|
4609 | {
|
---|
4610 | BspLeaf *leaf = dynamic_cast<BspViewCell *>(leaves[i])->mLeaves[0];
|
---|
4611 |
|
---|
4612 | if (i != j)
|
---|
4613 | {
|
---|
4614 | BspLeaf *leaf2 =dynamic_cast<BspViewCell *>(leaves[j])->mLeaves[0];
|
---|
4615 | const int dist = mVspBspTree->TreeDistance(leaf, leaf2);
|
---|
4616 |
|
---|
4617 | if (dist > maxDist)
|
---|
4618 | maxDist = dist;
|
---|
4619 | }
|
---|
4620 | }
|
---|
4621 | }
|
---|
4622 |
|
---|
4623 | return maxDist;
|
---|
4624 | }
|
---|
4625 |
|
---|
4626 |
|
---|
4627 | ViewCell *VspBspViewCellsManager::GetViewCell(const Vector3 &point, const bool active) const
|
---|
4628 | {
|
---|
4629 | if (!ViewCellsConstructed())
|
---|
4630 | return NULL;
|
---|
4631 |
|
---|
4632 | if (!mViewSpaceBox.IsInside(point))
|
---|
4633 | return NULL;
|
---|
4634 |
|
---|
4635 | return mVspBspTree->GetViewCell(point, active);
|
---|
4636 | }
|
---|
4637 |
|
---|
4638 |
|
---|
4639 | void VspBspViewCellsManager::CreateMesh(ViewCell *vc)
|
---|
4640 | {
|
---|
4641 | BspNodeGeometry geom;
|
---|
4642 | mVspBspTree->ConstructGeometry(vc, geom);
|
---|
4643 |
|
---|
4644 | Mesh *mesh = MeshManager::GetSingleton()->CreateResource();
|
---|
4645 | IncludeNodeGeomInMesh(geom, *mesh);
|
---|
4646 |
|
---|
4647 | vc->SetMesh(mesh);
|
---|
4648 | }
|
---|
4649 |
|
---|
4650 |
|
---|
4651 | int VspBspViewCellsManager::CastBeam(Beam &beam)
|
---|
4652 | {
|
---|
4653 | return mVspBspTree->CastBeam(beam);
|
---|
4654 | }
|
---|
4655 |
|
---|
4656 |
|
---|
4657 | void VspBspViewCellsManager::Finalize(ViewCell *viewCell,
|
---|
4658 | const bool createMesh)
|
---|
4659 | {
|
---|
4660 | float area = 0;
|
---|
4661 | float volume = 0;
|
---|
4662 |
|
---|
4663 | ViewCellContainer leaves;
|
---|
4664 | mViewCellsTree->CollectLeaves(viewCell, leaves);
|
---|
4665 |
|
---|
4666 | ViewCellContainer::const_iterator it, it_end = leaves.end();
|
---|
4667 |
|
---|
4668 | for (it = leaves.begin(); it != it_end; ++ it)
|
---|
4669 | {
|
---|
4670 | BspNodeGeometry geom;
|
---|
4671 | mVspBspTree->ConstructGeometry(*it, geom);
|
---|
4672 |
|
---|
4673 | const float lVol = geom.GetVolume();
|
---|
4674 | const float lArea = geom.GetArea();
|
---|
4675 |
|
---|
4676 | area += lArea;
|
---|
4677 | volume += lVol;
|
---|
4678 |
|
---|
4679 | CreateMesh(*it);
|
---|
4680 | }
|
---|
4681 |
|
---|
4682 | viewCell->SetVolume(volume);
|
---|
4683 | viewCell->SetArea(area);
|
---|
4684 | }
|
---|
4685 |
|
---|
4686 |
|
---|
4687 | void VspBspViewCellsManager::TestSubdivision()
|
---|
4688 | {
|
---|
4689 | ViewCellContainer leaves;
|
---|
4690 | mViewCellsTree->CollectLeaves(mViewCellsTree->GetRoot(), leaves);
|
---|
4691 |
|
---|
4692 | ViewCellContainer::const_iterator it, it_end = leaves.end();
|
---|
4693 |
|
---|
4694 | const float vol = mViewSpaceBox.GetVolume();
|
---|
4695 | float subdivVol = 0;
|
---|
4696 | float newVol = 0;
|
---|
4697 |
|
---|
4698 | for (it = leaves.begin(); it != it_end; ++ it)
|
---|
4699 | {
|
---|
4700 | BspNodeGeometry geom;
|
---|
4701 | mVspBspTree->ConstructGeometry(*it, geom);
|
---|
4702 |
|
---|
4703 | const float lVol = geom.GetVolume();
|
---|
4704 |
|
---|
4705 | newVol += lVol;
|
---|
4706 | subdivVol += (*it)->GetVolume();
|
---|
4707 |
|
---|
4708 | float thres = 0.9f;
|
---|
4709 | if ((lVol < ((*it)->GetVolume() * thres)) || (lVol * thres > ((*it)->GetVolume())))
|
---|
4710 | Debug << "warning: " << lVol << " " << (*it)->GetVolume() << endl;
|
---|
4711 | }
|
---|
4712 |
|
---|
4713 | Debug << "exact volume: " << vol << endl;
|
---|
4714 | Debug << "subdivision volume: " << subdivVol << endl;
|
---|
4715 | Debug << "new volume: " << newVol << endl;
|
---|
4716 | }
|
---|
4717 |
|
---|
4718 |
|
---|
4719 | void VspBspViewCellsManager::PrepareLoadedViewCells()
|
---|
4720 | {
|
---|
4721 | // TODO: do I still need this here?
|
---|
4722 | if (0)
|
---|
4723 | mVspBspTree->RepairViewCellsLeafLists();
|
---|
4724 | }
|
---|
4725 |
|
---|
4726 |
|
---|
4727 |
|
---|
4728 | /**************************************************************************/
|
---|
4729 | /* VspOspViewCellsManager implementation */
|
---|
4730 | /**************************************************************************/
|
---|
4731 |
|
---|
4732 |
|
---|
4733 | VspOspViewCellsManager::VspOspViewCellsManager(ViewCellsTree *vcTree, HierarchyManager *hm)
|
---|
4734 | : ViewCellsManager(vcTree), mHierarchyManager(hm)
|
---|
4735 | {
|
---|
4736 | Environment::GetSingleton()->GetIntValue("VspTree.Construction.samples", mInitialSamples);
|
---|
4737 |
|
---|
4738 | mHierarchyManager->SetViewCellsManager(this);
|
---|
4739 | mHierarchyManager->SetViewCellsTree(mViewCellsTree);
|
---|
4740 | }
|
---|
4741 |
|
---|
4742 |
|
---|
4743 | VspOspViewCellsManager::~VspOspViewCellsManager()
|
---|
4744 | {
|
---|
4745 | }
|
---|
4746 |
|
---|
4747 |
|
---|
4748 | float VspOspViewCellsManager::GetProbability(ViewCell *viewCell)
|
---|
4749 | {
|
---|
4750 | return GetVolume(viewCell) / mViewSpaceBox.GetVolume();
|
---|
4751 | }
|
---|
4752 |
|
---|
4753 |
|
---|
4754 | void VspOspViewCellsManager::CollectViewCells()
|
---|
4755 | {
|
---|
4756 | // view cells tree constructed
|
---|
4757 | if (!ViewCellsTreeConstructed())
|
---|
4758 | {
|
---|
4759 | mHierarchyManager->GetVspTree()->CollectViewCells(mViewCells, false);
|
---|
4760 | }
|
---|
4761 | else
|
---|
4762 | { // we can use the view cells tree hierarchy to get the right set
|
---|
4763 | mViewCellsTree->CollectBestViewCellSet(mViewCells, mNumActiveViewCells);
|
---|
4764 | }
|
---|
4765 | }
|
---|
4766 |
|
---|
4767 |
|
---|
4768 | bool VspOspViewCellsManager::ViewCellsConstructed() const
|
---|
4769 | {
|
---|
4770 | return mHierarchyManager->GetVspTree()->GetRoot() != NULL;
|
---|
4771 | }
|
---|
4772 |
|
---|
4773 |
|
---|
4774 | ViewCell *VspOspViewCellsManager::GenerateViewCell(Mesh *mesh) const
|
---|
4775 | {
|
---|
4776 | return new VspViewCell(mesh);
|
---|
4777 | }
|
---|
4778 |
|
---|
4779 |
|
---|
4780 | int VspOspViewCellsManager::ConstructSubdivision(const ObjectContainer &objects,
|
---|
4781 | const VssRayContainer &rays)
|
---|
4782 | {
|
---|
4783 | mMaxPvsSize = (int)(mMaxPvsRatio * (float)objects.size());
|
---|
4784 |
|
---|
4785 | // skip rest if view cells were already constructed
|
---|
4786 | if (ViewCellsConstructed())
|
---|
4787 | return 0;
|
---|
4788 |
|
---|
4789 | int sampleContributions = 0;
|
---|
4790 | VssRayContainer sampleRays;
|
---|
4791 |
|
---|
4792 | int limit = min (mInitialSamples, (int)rays.size());
|
---|
4793 |
|
---|
4794 | VssRayContainer constructionRays;
|
---|
4795 | VssRayContainer savedRays;
|
---|
4796 |
|
---|
4797 | Debug << "samples used for vsp bsp subdivision: " << mInitialSamples
|
---|
4798 | << ", actual rays: " << (int)rays.size() << endl;
|
---|
4799 |
|
---|
4800 | GetRaySets(rays, mInitialSamples, constructionRays, &savedRays);
|
---|
4801 |
|
---|
4802 | Debug << "initial rays used for construction: " << (int)constructionRays.size() << endl;
|
---|
4803 | Debug << "saved rays: " << (int)savedRays.size() << endl;
|
---|
4804 |
|
---|
4805 | mHierarchyManager->Construct(constructionRays, objects, &mViewSpaceBox);
|
---|
4806 |
|
---|
4807 | #if TEST_EVALUATION
|
---|
4808 | VssRayContainer::const_iterator tit, tit_end = constructionRays.end();
|
---|
4809 | for (tit = constructionRays.begin(); tit != tit_end; ++ tit)
|
---|
4810 | {
|
---|
4811 | storedRays.push_back(new VssRay(*(*tit)));
|
---|
4812 | }
|
---|
4813 | #endif
|
---|
4814 |
|
---|
4815 | /////////////////////////
|
---|
4816 | //-- print satistics for subdivision and view cells
|
---|
4817 |
|
---|
4818 | Debug << endl << endl << *mHierarchyManager << endl;
|
---|
4819 |
|
---|
4820 | ResetViewCells();
|
---|
4821 | Debug << "\nView cells after construction:\n" << mCurrentViewCellsStats << endl;
|
---|
4822 |
|
---|
4823 | //////////////
|
---|
4824 | //-- recast rest of rays
|
---|
4825 |
|
---|
4826 | const long startTime = GetTime();
|
---|
4827 | cout << "Computing remaining ray contributions ... ";
|
---|
4828 |
|
---|
4829 | if (SAMPLE_AFTER_SUBDIVISION)
|
---|
4830 | ComputeSampleContributions(savedRays, true, false);
|
---|
4831 |
|
---|
4832 | Debug << "finished computing remaining ray contribution in " << TimeDiff(startTime, GetTime()) * 1e-3
|
---|
4833 | << " secs" << endl;
|
---|
4834 |
|
---|
4835 | if (0)
|
---|
4836 | { // real meshes are constructed at this stage
|
---|
4837 | cout << "finalizing view cells ... ";
|
---|
4838 | FinalizeViewCells(true);
|
---|
4839 | cout << "finished" << endl;
|
---|
4840 | }
|
---|
4841 |
|
---|
4842 | return sampleContributions;
|
---|
4843 | }
|
---|
4844 |
|
---|
4845 |
|
---|
4846 | int VspOspViewCellsManager::PostProcess(const ObjectContainer &objects,
|
---|
4847 | const VssRayContainer &rays)
|
---|
4848 | {
|
---|
4849 | if (!ViewCellsConstructed())
|
---|
4850 | {
|
---|
4851 | Debug << "postprocess error: no view cells constructed" << endl;
|
---|
4852 | return 0;
|
---|
4853 | }
|
---|
4854 |
|
---|
4855 | // if view cells were already constructed before post processing step
|
---|
4856 | // (e.g., because they were loaded), we are finished
|
---|
4857 | if (mViewCellsFinished)
|
---|
4858 | {
|
---|
4859 | FinalizeViewCells(true);
|
---|
4860 | EvaluateViewCellsStats();
|
---|
4861 |
|
---|
4862 | return 0;
|
---|
4863 | }
|
---|
4864 |
|
---|
4865 | // check if new view cells turned invalid
|
---|
4866 | int minPvs, maxPvs;
|
---|
4867 |
|
---|
4868 | if (0)
|
---|
4869 | {
|
---|
4870 | minPvs = mMinPvsSize;
|
---|
4871 | maxPvs = mMaxPvsSize;
|
---|
4872 | }
|
---|
4873 | else
|
---|
4874 | {
|
---|
4875 | // problem matt: why did I start here from zero?
|
---|
4876 | minPvs = 0;
|
---|
4877 | maxPvs = mMaxPvsSize;
|
---|
4878 | }
|
---|
4879 |
|
---|
4880 | Debug << "setting validity, min: " << minPvs << " max: " << maxPvs << endl;
|
---|
4881 | cout << "setting validity, min: " << minPvs << " max: " << maxPvs << endl;
|
---|
4882 |
|
---|
4883 | SetValidity(minPvs, maxPvs);
|
---|
4884 |
|
---|
4885 |
|
---|
4886 | // area is not up to date, has to be recomputed
|
---|
4887 | mTotalAreaValid = false;
|
---|
4888 | VssRayContainer postProcessRays;
|
---|
4889 | GetRaySets(rays, mPostProcessSamples, postProcessRays);
|
---|
4890 |
|
---|
4891 | Debug << "post processing using " << (int)postProcessRays.size() << " samples" << endl;
|
---|
4892 |
|
---|
4893 |
|
---|
4894 | // should maybe be done here to allow merge working with area or volume
|
---|
4895 | // and to correct the rendering statistics
|
---|
4896 | if (0) FinalizeViewCells(false);
|
---|
4897 |
|
---|
4898 | // compute tree by merging the nodes of the spatial hierarchy
|
---|
4899 | ViewCell *root = ConstructSpatialMergeTree(mHierarchyManager->GetVspTree()->GetRoot());
|
---|
4900 | mViewCellsTree->SetRoot(root);
|
---|
4901 |
|
---|
4902 |
|
---|
4903 | //////////////////////////
|
---|
4904 | //-- update pvs in the whole hierarchy
|
---|
4905 | ObjectPvs pvs;
|
---|
4906 | UpdatePvsForEvaluation(root, pvs);
|
---|
4907 |
|
---|
4908 |
|
---|
4909 | //////////////////////
|
---|
4910 | //-- render simulation after merge + refine
|
---|
4911 |
|
---|
4912 | cout << "\nview cells partition render time before compress" << endl << endl;
|
---|
4913 | dynamic_cast<RenderSimulator *>(mRenderer)->RenderScene();
|
---|
4914 | SimulationStatistics ss;
|
---|
4915 | dynamic_cast<RenderSimulator *>(mRenderer)->GetStatistics(ss);
|
---|
4916 | cout << ss << endl;
|
---|
4917 |
|
---|
4918 |
|
---|
4919 | ///////////////
|
---|
4920 | //-- compression
|
---|
4921 |
|
---|
4922 | if (ViewCellsTreeConstructed() && mCompressViewCells)
|
---|
4923 | {
|
---|
4924 | int pvsEntries = mViewCellsTree->GetStoredPvsEntriesNum(mViewCellsTree->GetRoot());
|
---|
4925 | Debug << "number of entries before compress: " << pvsEntries << endl;
|
---|
4926 |
|
---|
4927 | mViewCellsTree->SetViewCellsStorage(ViewCellsTree::COMPRESSED);
|
---|
4928 |
|
---|
4929 | pvsEntries = mViewCellsTree->GetStoredPvsEntriesNum(mViewCellsTree->GetRoot());
|
---|
4930 | Debug << "number of entries after compress: " << pvsEntries << endl;
|
---|
4931 | }
|
---|
4932 |
|
---|
4933 | /////////////
|
---|
4934 | //-- some tasks still to do on the view cells:
|
---|
4935 | //-- Compute meshes from view cell geometry, evaluate volume and / or area
|
---|
4936 | if (1) FinalizeViewCells(true);
|
---|
4937 |
|
---|
4938 | // write out view cells (this moved to preprocessor)
|
---|
4939 | if (1 && mExportViewCells)
|
---|
4940 | {
|
---|
4941 | char filename[100];
|
---|
4942 | Environment::GetSingleton()->GetStringValue("ViewCells.filename", filename);
|
---|
4943 | ExportViewCells(filename, mExportPvs, objects);
|
---|
4944 | }
|
---|
4945 |
|
---|
4946 | return 0;
|
---|
4947 | }
|
---|
4948 |
|
---|
4949 |
|
---|
4950 | int VspOspViewCellsManager::GetType() const
|
---|
4951 | {
|
---|
4952 | return VSP_OSP;
|
---|
4953 | }
|
---|
4954 |
|
---|
4955 |
|
---|
4956 | ViewCell *VspOspViewCellsManager::ConstructSpatialMergeTree(VspNode *root)
|
---|
4957 | {
|
---|
4958 | // terminate recursion
|
---|
4959 | if (root->IsLeaf())
|
---|
4960 | {
|
---|
4961 | VspLeaf *leaf = dynamic_cast<VspLeaf *>(root);
|
---|
4962 | leaf->GetViewCell()->SetMergeCost(0.0f);
|
---|
4963 | return leaf->GetViewCell();
|
---|
4964 | }
|
---|
4965 |
|
---|
4966 | VspInterior *interior = dynamic_cast<VspInterior *>(root);
|
---|
4967 | ViewCellInterior *viewCellInterior = new ViewCellInterior();
|
---|
4968 |
|
---|
4969 | // evaluate merge cost for priority traversal
|
---|
4970 | float mergeCost = 1.0f / (float)root->mTimeStamp;
|
---|
4971 | viewCellInterior->SetMergeCost(mergeCost);
|
---|
4972 |
|
---|
4973 | float volume = 0;
|
---|
4974 |
|
---|
4975 | VspNode *front = interior->GetFront();
|
---|
4976 | VspNode *back = interior->GetBack();
|
---|
4977 |
|
---|
4978 | ObjectPvs frontPvs, backPvs;
|
---|
4979 |
|
---|
4980 | /////////
|
---|
4981 | //-- recursivly compute child hierarchies
|
---|
4982 |
|
---|
4983 | ViewCell *backVc = ConstructSpatialMergeTree(back);
|
---|
4984 | ViewCell *frontVc = ConstructSpatialMergeTree(front);
|
---|
4985 |
|
---|
4986 | viewCellInterior->SetupChildLink(backVc);
|
---|
4987 | viewCellInterior->SetupChildLink(frontVc);
|
---|
4988 |
|
---|
4989 | volume += backVc->GetVolume();
|
---|
4990 | volume += frontVc->GetVolume();
|
---|
4991 |
|
---|
4992 | viewCellInterior->SetVolume(volume);
|
---|
4993 |
|
---|
4994 | return viewCellInterior;
|
---|
4995 | }
|
---|
4996 |
|
---|
4997 |
|
---|
4998 | bool VspOspViewCellsManager::GetViewPoint(Vector3 &viewPoint) const
|
---|
4999 | {
|
---|
5000 | if (!ViewCellsConstructed())
|
---|
5001 | return ViewCellsManager::GetViewPoint(viewPoint);
|
---|
5002 |
|
---|
5003 | // TODO: set reasonable limit
|
---|
5004 | const int limit = 20;
|
---|
5005 |
|
---|
5006 | for (int i = 0; i < limit; ++ i)
|
---|
5007 | {
|
---|
5008 | viewPoint = mViewSpaceBox.GetRandomPoint();
|
---|
5009 |
|
---|
5010 | if (mHierarchyManager->GetVspTree()->ViewPointValid(viewPoint))
|
---|
5011 | {
|
---|
5012 | return true;
|
---|
5013 | }
|
---|
5014 | }
|
---|
5015 |
|
---|
5016 | Debug << "failed to find valid view point, taking " << viewPoint << endl;
|
---|
5017 | return false;
|
---|
5018 | }
|
---|
5019 |
|
---|
5020 |
|
---|
5021 | void VspOspViewCellsManager::ExportViewCellGeometry(Exporter *exporter,
|
---|
5022 | ViewCell *vc,
|
---|
5023 | const AxisAlignedBox3 *sceneBox,
|
---|
5024 | const AxisAlignedPlane *clipPlane
|
---|
5025 | ) const
|
---|
5026 | {
|
---|
5027 | ViewCellContainer leaves;
|
---|
5028 | mViewCellsTree->CollectLeaves(vc, leaves);
|
---|
5029 | ViewCellContainer::const_iterator it, it_end = leaves.end();
|
---|
5030 |
|
---|
5031 | Plane3 plane;
|
---|
5032 | if (clipPlane)
|
---|
5033 | {
|
---|
5034 | // arbitrary plane definition
|
---|
5035 | plane = clipPlane->GetPlane();
|
---|
5036 | }
|
---|
5037 |
|
---|
5038 | for (it = leaves.begin(); it != it_end; ++ it)
|
---|
5039 | {
|
---|
5040 | VspViewCell *vspVc = dynamic_cast<VspViewCell *>(*it);
|
---|
5041 | VspLeaf *l = vspVc->mLeaves[0];
|
---|
5042 |
|
---|
5043 | const AxisAlignedBox3 box =
|
---|
5044 | mHierarchyManager->GetVspTree()->GetBoundingBox(vspVc->mLeaves[0]);
|
---|
5045 |
|
---|
5046 | if (sceneBox && !Overlap(*sceneBox, box))
|
---|
5047 | continue;
|
---|
5048 |
|
---|
5049 | if (clipPlane)
|
---|
5050 | {
|
---|
5051 | if (box.Side(plane) == -1)
|
---|
5052 | {
|
---|
5053 | exporter->ExportBox(box);
|
---|
5054 | }
|
---|
5055 | else if (box.Side(plane) == 0)
|
---|
5056 | {
|
---|
5057 | // intersection
|
---|
5058 | AxisAlignedBox3 fbox, bbox;
|
---|
5059 | box.Split(clipPlane->mAxis, clipPlane->mPosition, fbox, bbox);
|
---|
5060 | exporter->ExportBox(bbox);
|
---|
5061 | }
|
---|
5062 | }
|
---|
5063 | else
|
---|
5064 | {
|
---|
5065 | exporter->ExportBox(box);
|
---|
5066 | }
|
---|
5067 | }
|
---|
5068 | }
|
---|
5069 |
|
---|
5070 |
|
---|
5071 | bool VspOspViewCellsManager::ViewPointValid(const Vector3 &viewPoint) const
|
---|
5072 | {
|
---|
5073 | // $$JB -> implemented in viewcellsmanager (slower, but allows dynamic
|
---|
5074 | // validy update in preprocessor for all managers)
|
---|
5075 | return ViewCellsManager::ViewPointValid(viewPoint);
|
---|
5076 |
|
---|
5077 | // return mViewSpaceBox.IsInside(viewPoint) &&
|
---|
5078 | // mVspTree->ViewPointValid(viewPoint);
|
---|
5079 | }
|
---|
5080 |
|
---|
5081 |
|
---|
5082 | void VspOspViewCellsManager::Visualize(const ObjectContainer &objects,
|
---|
5083 | const VssRayContainer &sampleRays)
|
---|
5084 | {
|
---|
5085 | if (!ViewCellsConstructed())
|
---|
5086 | return;
|
---|
5087 |
|
---|
5088 | VssRayContainer visRays;
|
---|
5089 | GetRaySets(sampleRays, mVisualizationSamples, visRays);
|
---|
5090 |
|
---|
5091 | if (1)
|
---|
5092 | {
|
---|
5093 | ////////////
|
---|
5094 | //-- export final view cells
|
---|
5095 |
|
---|
5096 | // hack color code (show pvs size)
|
---|
5097 | const int savedColorCode = mColorCode;
|
---|
5098 | mColorCode = 0;
|
---|
5099 |
|
---|
5100 | Exporter *exporter = Exporter::GetExporter("final_view_cells.wrl");
|
---|
5101 |
|
---|
5102 | if (exporter)
|
---|
5103 | {
|
---|
5104 | const long starttime = GetTime();
|
---|
5105 | cout << "exporting final view cells (after initial construction + post process) ... ";
|
---|
5106 |
|
---|
5107 | // matt: hack for clamping scene
|
---|
5108 | AxisAlignedBox3 bbox = mViewSpaceBox;
|
---|
5109 | bbox.Scale(Vector3(0.5, 1, 0.5));
|
---|
5110 | if (CLAMP_TO_BOX)
|
---|
5111 | {
|
---|
5112 | exporter->SetWireframe();
|
---|
5113 | exporter->ExportBox(bbox);
|
---|
5114 | exporter->SetFilled();
|
---|
5115 | }
|
---|
5116 |
|
---|
5117 | if (0 && mExportGeometry)
|
---|
5118 | {
|
---|
5119 | exporter->ExportGeometry(objects, true, CLAMP_TO_BOX ? &bbox : NULL);
|
---|
5120 | }
|
---|
5121 |
|
---|
5122 | if (0 && mExportRays)
|
---|
5123 | {
|
---|
5124 | exporter->ExportRays(visRays, RgbColor(0, 1, 0));
|
---|
5125 | }
|
---|
5126 |
|
---|
5127 | mHierarchyManager->ExportObjectSpaceHierarchy(exporter, objects, CLAMP_TO_BOX ? &bbox : NULL, false);
|
---|
5128 | ExportViewCellsForViz(exporter, CLAMP_TO_BOX ? &bbox : NULL, GetClipPlane());
|
---|
5129 |
|
---|
5130 | delete exporter;
|
---|
5131 | cout << "finished in " << TimeDiff(starttime, GetTime()) * 1e-3f << " secs" << endl;
|
---|
5132 | }
|
---|
5133 |
|
---|
5134 | mColorCode = savedColorCode;
|
---|
5135 | }
|
---|
5136 |
|
---|
5137 | if (1)
|
---|
5138 | {
|
---|
5139 | // export final object partition
|
---|
5140 | Exporter *exporter = Exporter::GetExporter("final_object_partition.wrl");
|
---|
5141 |
|
---|
5142 | if (exporter)
|
---|
5143 | {
|
---|
5144 | const long starttime = GetTime();
|
---|
5145 |
|
---|
5146 | // matt: hack for making visualization smaller in size
|
---|
5147 | AxisAlignedBox3 bbox = mHierarchyManager->GetObjectSpaceBox();
|
---|
5148 | bbox.Scale(Vector3(0.5, 1, 0.5));
|
---|
5149 |
|
---|
5150 | cout << "exporting object space hierarchy ... ";
|
---|
5151 | mHierarchyManager->ExportObjectSpaceHierarchy(exporter, objects, CLAMP_TO_BOX ? &bbox : NULL);
|
---|
5152 |
|
---|
5153 | delete exporter;
|
---|
5154 | cout << "finished in " << TimeDiff(starttime, GetTime()) * 1e-3f << " secs" << endl;
|
---|
5155 | }
|
---|
5156 | }
|
---|
5157 |
|
---|
5158 | // export some view cell
|
---|
5159 | int leafOut;
|
---|
5160 | Environment::GetSingleton()->GetIntValue("ViewCells.Visualization.maxOutput", leafOut);
|
---|
5161 | const int raysOut = 100;
|
---|
5162 |
|
---|
5163 | ExportSingleViewCells(objects, leafOut, false, true, false, raysOut, "");
|
---|
5164 | }
|
---|
5165 |
|
---|
5166 |
|
---|
5167 | void VspOspViewCellsManager::ExportSingleViewCells(const ObjectContainer &objects,
|
---|
5168 | const int maxViewCells,
|
---|
5169 | const bool sortViewCells,
|
---|
5170 | const bool exportPvs,
|
---|
5171 | const bool exportRays,
|
---|
5172 | const int maxRays,
|
---|
5173 | const string prefix,
|
---|
5174 | VssRayContainer *visRays)
|
---|
5175 | {
|
---|
5176 | if (sortViewCells)
|
---|
5177 | {
|
---|
5178 | // sort view cells to visualize the view cells with highest render cost
|
---|
5179 | stable_sort(mViewCells.begin(), mViewCells.end(), ViewCell::LargerRenderCost);
|
---|
5180 | }
|
---|
5181 |
|
---|
5182 | ViewCell::NewMail();
|
---|
5183 | const int limit = min(maxViewCells, (int)mViewCells.size());
|
---|
5184 |
|
---|
5185 | cout << "\nExporting " << limit << " single view cells: " << endl;
|
---|
5186 |
|
---|
5187 | for (int i = 0; i < limit; ++ i)
|
---|
5188 | {
|
---|
5189 | cout << "creating output for view cell " << i << " ... ";
|
---|
5190 |
|
---|
5191 | // largest view cell pvs first of random view cell
|
---|
5192 | ViewCell *vc = sortViewCells ?
|
---|
5193 | mViewCells[i] : mViewCells[(int)RandomValue(0, (float)mViewCells.size() - 1)];
|
---|
5194 |
|
---|
5195 | if (vc->Mailed()) // already used
|
---|
5196 | continue;
|
---|
5197 |
|
---|
5198 | vc->Mail();
|
---|
5199 |
|
---|
5200 | ObjectPvs pvs;
|
---|
5201 | mViewCellsTree->GetPvs(vc, pvs);
|
---|
5202 |
|
---|
5203 | char s[64]; sprintf(s, "%sviewcell%04d.wrl", prefix.c_str(), i);
|
---|
5204 | Exporter *exporter = Exporter::GetExporter(s);
|
---|
5205 |
|
---|
5206 | cout << "view cell " << vc->GetId() << ": pvs size=" << (int)mViewCellsTree->GetPvsSize(vc) << endl;
|
---|
5207 |
|
---|
5208 | if (exportPvs)
|
---|
5209 | {
|
---|
5210 | Material m;
|
---|
5211 |
|
---|
5212 | Intersectable::NewMail();
|
---|
5213 | ObjectPvsMap::const_iterator oit, oit_end = pvs.mEntries.end();
|
---|
5214 |
|
---|
5215 | // output PVS of view cell
|
---|
5216 | for (oit = pvs.mEntries.begin(); oit != oit_end; ++ oit)
|
---|
5217 | {
|
---|
5218 | Intersectable *intersect = (*oit).first;
|
---|
5219 | if (!intersect->Mailed())
|
---|
5220 | {
|
---|
5221 | m = RandomMaterial();
|
---|
5222 | exporter->SetForcedMaterial(m);
|
---|
5223 |
|
---|
5224 | exporter->ExportIntersectable(intersect);
|
---|
5225 | intersect->Mail();
|
---|
5226 | }
|
---|
5227 | }
|
---|
5228 | }
|
---|
5229 |
|
---|
5230 | if (exportRays)
|
---|
5231 | {
|
---|
5232 | ////////////
|
---|
5233 | //-- export the sample rays
|
---|
5234 |
|
---|
5235 | // output rays stored with the view cells during subdivision
|
---|
5236 | VssRayContainer vcRays;
|
---|
5237 | VssRayContainer collectRays;
|
---|
5238 |
|
---|
5239 | // collect intial view cells
|
---|
5240 | ViewCellContainer leaves;
|
---|
5241 | mViewCellsTree->CollectLeaves(vc, leaves);
|
---|
5242 |
|
---|
5243 | ViewCellContainer::const_iterator vit, vit_end = leaves.end();
|
---|
5244 |
|
---|
5245 | for (vit = leaves.begin(); vit != vit_end; ++ vit)
|
---|
5246 | {
|
---|
5247 | VspLeaf *vcLeaf = dynamic_cast<VspViewCell *>(*vit)->mLeaves[0];
|
---|
5248 | VssRayContainer::const_iterator rit, rit_end = vcLeaf->mVssRays.end();
|
---|
5249 |
|
---|
5250 | for (rit = vcLeaf->mVssRays.begin(); rit != rit_end; ++ rit)
|
---|
5251 | {
|
---|
5252 | collectRays.push_back(*rit);
|
---|
5253 | }
|
---|
5254 | }
|
---|
5255 |
|
---|
5256 | const int raysOut = min((int)collectRays.size(), maxRays);
|
---|
5257 |
|
---|
5258 | VssRayContainer::const_iterator rit, rit_end = collectRays.end();
|
---|
5259 |
|
---|
5260 | for (rit = collectRays.begin(); rit != rit_end; ++ rit)
|
---|
5261 | {
|
---|
5262 | const float p = RandomValue(0.0f, (float)collectRays.size());
|
---|
5263 |
|
---|
5264 | if (p < raysOut)
|
---|
5265 | vcRays.push_back(*rit);
|
---|
5266 | }
|
---|
5267 |
|
---|
5268 | exporter->ExportRays(vcRays, RgbColor(1, 1, 1));
|
---|
5269 | }
|
---|
5270 |
|
---|
5271 |
|
---|
5272 | /////////////////
|
---|
5273 | //-- export view cell geometry
|
---|
5274 |
|
---|
5275 | exporter->SetWireframe();
|
---|
5276 |
|
---|
5277 | Material m;
|
---|
5278 | m.mDiffuseColor = RgbColor(0, 1, 0);
|
---|
5279 | exporter->SetForcedMaterial(m);
|
---|
5280 |
|
---|
5281 | ExportViewCellGeometry(exporter, vc, NULL, NULL);
|
---|
5282 | exporter->SetFilled();
|
---|
5283 |
|
---|
5284 | DEL_PTR(exporter);
|
---|
5285 | cout << "finished" << endl;
|
---|
5286 | }
|
---|
5287 |
|
---|
5288 | cout << endl;
|
---|
5289 | }
|
---|
5290 |
|
---|
5291 |
|
---|
5292 | int VspOspViewCellsManager::ComputeBoxIntersections(const AxisAlignedBox3 &box,
|
---|
5293 | ViewCellContainer &viewCells) const
|
---|
5294 | {
|
---|
5295 | return mHierarchyManager->GetVspTree()->ComputeBoxIntersections(box, viewCells);
|
---|
5296 | }
|
---|
5297 |
|
---|
5298 |
|
---|
5299 | int VspOspViewCellsManager::CastLineSegment(const Vector3 &origin,
|
---|
5300 | const Vector3 &termination,
|
---|
5301 | ViewCellContainer &viewcells)
|
---|
5302 | {
|
---|
5303 | return mHierarchyManager->GetVspTree()->CastLineSegment(origin, termination, viewcells);
|
---|
5304 | }
|
---|
5305 |
|
---|
5306 |
|
---|
5307 | bool VspOspViewCellsManager::ExportViewCells(const string filename,
|
---|
5308 | const bool exportPvs,
|
---|
5309 | const ObjectContainer &objects)
|
---|
5310 | {
|
---|
5311 | if (!ViewCellsConstructed() || !ViewCellsTreeConstructed())
|
---|
5312 | return false;
|
---|
5313 |
|
---|
5314 | const long starttime = GetTime();
|
---|
5315 | cout << "exporting view cells to xml ... ";
|
---|
5316 |
|
---|
5317 | OUT_STREAM stream(filename.c_str());
|
---|
5318 |
|
---|
5319 | // for output we need unique ids for each view cell
|
---|
5320 | CreateUniqueViewCellIds();
|
---|
5321 |
|
---|
5322 | stream << "<?xml version=\"1.0\" encoding=\"UTF-8\"?>"<<endl;
|
---|
5323 | stream << "<VisibilitySolution>" << endl;
|
---|
5324 |
|
---|
5325 | if (exportPvs)
|
---|
5326 | {
|
---|
5327 | ///////////////
|
---|
5328 | //-- export bounding boxes
|
---|
5329 | //-- The bounding boxes are used to identify
|
---|
5330 | //-- the objects in the rendering engine
|
---|
5331 |
|
---|
5332 | stream << "<BoundingBoxes>" << endl;
|
---|
5333 | ObjectContainer::const_iterator oit, oit_end = objects.end();
|
---|
5334 |
|
---|
5335 | for (oit = objects.begin(); oit != oit_end; ++ oit)
|
---|
5336 | {
|
---|
5337 | const AxisAlignedBox3 box = (*oit)->GetBox();
|
---|
5338 | stream << "<BoundingBox" << " id=\"" << (*oit)->GetId() << "\""
|
---|
5339 | << " min=\"" << box.Min().x << " " << box.Min().y << " " << box.Min().z << "\""
|
---|
5340 |
|
---|
5341 | << " max=\"" << box.Max().x << " " << box.Max().y << " " << box.Max().z << "\" />" << endl;
|
---|
5342 | }
|
---|
5343 |
|
---|
5344 | stream << "</BoundingBoxes>" << endl;
|
---|
5345 | }
|
---|
5346 |
|
---|
5347 | //////////////////////////
|
---|
5348 | //-- export the view cells and the pvs
|
---|
5349 |
|
---|
5350 | const int numViewCells = mCurrentViewCellsStats.viewCells;
|
---|
5351 |
|
---|
5352 | stream << "<ViewCells number=\"" << numViewCells << "\" >" << endl;
|
---|
5353 | mViewCellsTree->Export(stream, exportPvs);
|
---|
5354 | stream << "</ViewCells>" << endl;
|
---|
5355 |
|
---|
5356 | //////////////////////
|
---|
5357 | //-- export the view space hierarchy
|
---|
5358 |
|
---|
5359 | stream << "<ViewSpaceHierarchy type=\"vsp\""
|
---|
5360 | << " min=\"" << mViewSpaceBox.Min().x << " " << mViewSpaceBox.Min().y << " " << mViewSpaceBox.Min().z << "\""
|
---|
5361 | << " max=\"" << mViewSpaceBox.Max().x << " " << mViewSpaceBox.Max().y << " " << mViewSpaceBox.Max().z << "\">" << endl;
|
---|
5362 |
|
---|
5363 | mHierarchyManager->GetVspTree()->Export(stream);
|
---|
5364 | stream << "</ViewSpaceHierarchy>" << endl;
|
---|
5365 |
|
---|
5366 | //////////////////////
|
---|
5367 | //-- export the object space partition
|
---|
5368 |
|
---|
5369 | mHierarchyManager->ExportObjectSpaceHierarchy(stream);
|
---|
5370 |
|
---|
5371 | stream << "</VisibilitySolution>" << endl;
|
---|
5372 | stream.close();
|
---|
5373 |
|
---|
5374 | cout << "finished in " << TimeDiff(starttime, GetTime()) * 1e-3 << " secs" << endl;
|
---|
5375 | return true;
|
---|
5376 | }
|
---|
5377 |
|
---|
5378 |
|
---|
5379 |
|
---|
5380 | ViewCell *VspOspViewCellsManager::GetViewCell(const Vector3 &point,
|
---|
5381 | const bool active) const
|
---|
5382 | {
|
---|
5383 | if (!ViewCellsConstructed())
|
---|
5384 | return NULL;
|
---|
5385 | if (!mViewSpaceBox.IsInside(point))
|
---|
5386 | return NULL;
|
---|
5387 | return mHierarchyManager->GetVspTree()->GetViewCell(point, active);
|
---|
5388 | }
|
---|
5389 |
|
---|
5390 |
|
---|
5391 | void VspOspViewCellsManager::CreateMesh(ViewCell *vc)
|
---|
5392 | {
|
---|
5393 | // matt: TODO
|
---|
5394 | Mesh *mesh = MeshManager::GetSingleton()->CreateResource();
|
---|
5395 |
|
---|
5396 | ViewCellContainer leaves;
|
---|
5397 | mViewCellsTree->CollectLeaves(vc, leaves);
|
---|
5398 |
|
---|
5399 | ViewCellContainer::const_iterator it, it_end = leaves.end();
|
---|
5400 |
|
---|
5401 | for (it = leaves.begin(); it != it_end; ++ it)
|
---|
5402 | {
|
---|
5403 | VspLeaf *leaf = dynamic_cast<VspViewCell *>(*it)->mLeaves[0];
|
---|
5404 | const AxisAlignedBox3 box = mHierarchyManager->GetVspTree()->GetBoundingBox(leaf);
|
---|
5405 | IncludeBoxInMesh(box, *mesh);
|
---|
5406 | }
|
---|
5407 |
|
---|
5408 | vc->SetMesh(mesh);
|
---|
5409 | }
|
---|
5410 |
|
---|
5411 |
|
---|
5412 | int VspOspViewCellsManager::CastBeam(Beam &beam)
|
---|
5413 | {
|
---|
5414 | // matt: TODO
|
---|
5415 | return 0;
|
---|
5416 | }
|
---|
5417 |
|
---|
5418 |
|
---|
5419 | void VspOspViewCellsManager::Finalize(ViewCell *viewCell,
|
---|
5420 | const bool createMesh)
|
---|
5421 | {
|
---|
5422 | float area = 0;
|
---|
5423 | float volume = 0;
|
---|
5424 |
|
---|
5425 | ViewCellContainer leaves;
|
---|
5426 | mViewCellsTree->CollectLeaves(viewCell, leaves);
|
---|
5427 |
|
---|
5428 | ViewCellContainer::const_iterator it, it_end = leaves.end();
|
---|
5429 |
|
---|
5430 | for (it = leaves.begin(); it != it_end; ++ it)
|
---|
5431 | {
|
---|
5432 | VspLeaf *leaf = dynamic_cast<VspViewCell *>(*it)->mLeaves[0];
|
---|
5433 |
|
---|
5434 | const AxisAlignedBox3 box = mHierarchyManager->GetVspTree()->GetBoundingBox(leaf);
|
---|
5435 |
|
---|
5436 | const float lVol = box.GetVolume();
|
---|
5437 | const float lArea = box.SurfaceArea();
|
---|
5438 |
|
---|
5439 | area += lArea;
|
---|
5440 | volume += lVol;
|
---|
5441 |
|
---|
5442 | CreateMesh(*it);
|
---|
5443 | }
|
---|
5444 |
|
---|
5445 | viewCell->SetVolume(volume);
|
---|
5446 | viewCell->SetArea(area);
|
---|
5447 | }
|
---|
5448 |
|
---|
5449 |
|
---|
5450 | float VspOspViewCellsManager::ComputeSampleContribution(VssRay &ray,
|
---|
5451 | const bool addRays,
|
---|
5452 | const bool storeViewCells)
|
---|
5453 | {
|
---|
5454 | ViewCellContainer viewcells;
|
---|
5455 |
|
---|
5456 | ray.mPvsContribution = 0;
|
---|
5457 | ray.mRelativePvsContribution = 0.0f;
|
---|
5458 |
|
---|
5459 | static Ray hray;
|
---|
5460 | hray.Init(ray);
|
---|
5461 | //hray.mFlags |= Ray::CULL_BACKFACES;
|
---|
5462 | //Ray hray(ray);
|
---|
5463 |
|
---|
5464 | float tmin = 0, tmax = 1.0;
|
---|
5465 |
|
---|
5466 | if (!GetViewSpaceBox().GetRaySegment(hray, tmin, tmax) || (tmin > tmax))
|
---|
5467 | return 0;
|
---|
5468 |
|
---|
5469 | Vector3 origin = hray.Extrap(tmin);
|
---|
5470 | Vector3 termination = hray.Extrap(tmax);
|
---|
5471 |
|
---|
5472 | ViewCell::NewMail();
|
---|
5473 |
|
---|
5474 | // traverse the view space subdivision
|
---|
5475 | CastLineSegment(origin, termination, viewcells);
|
---|
5476 |
|
---|
5477 | if (storeViewCells)
|
---|
5478 | {
|
---|
5479 | // copy viewcells memory efficiently
|
---|
5480 | ray.mViewCells.reserve(viewcells.size());
|
---|
5481 | ray.mViewCells = viewcells;
|
---|
5482 | }
|
---|
5483 |
|
---|
5484 | ViewCellContainer::const_iterator it = viewcells.begin();
|
---|
5485 |
|
---|
5486 | for (; it != viewcells.end(); ++ it)
|
---|
5487 | {
|
---|
5488 | ViewCell *viewcell = *it;
|
---|
5489 |
|
---|
5490 | if (viewcell->GetValid())
|
---|
5491 | { // if ray not outside of view space
|
---|
5492 | float contribution;
|
---|
5493 |
|
---|
5494 | if (ray.mTerminationObject)
|
---|
5495 | {
|
---|
5496 | // todo: maybe not correct for kd node pvs
|
---|
5497 | Intersectable *obj = mHierarchyManager->GetIntersectable(ray, true);
|
---|
5498 | if (viewcell->GetPvs().GetSampleContribution(obj,
|
---|
5499 | ray.mPdf,
|
---|
5500 | contribution))
|
---|
5501 | {
|
---|
5502 | ++ ray.mPvsContribution;
|
---|
5503 | }
|
---|
5504 |
|
---|
5505 | ray.mRelativePvsContribution += contribution;
|
---|
5506 | }
|
---|
5507 |
|
---|
5508 | // for directional sampling it is important to count only contributions
|
---|
5509 | // made in one direction!
|
---|
5510 | // the other contributions of this sample will be counted for the opposite ray!
|
---|
5511 | #if SAMPLE_ORIGIN_OBJECTS
|
---|
5512 | if (ray.mOriginObject &&
|
---|
5513 | viewcell->GetPvs().GetSampleContribution(ray.mOriginObject,
|
---|
5514 | ray.mPdf,
|
---|
5515 | contribution))
|
---|
5516 | {
|
---|
5517 | ++ ray.mPvsContribution;
|
---|
5518 | ray.mRelativePvsContribution += contribution;
|
---|
5519 | }
|
---|
5520 | #endif
|
---|
5521 | }
|
---|
5522 | }
|
---|
5523 |
|
---|
5524 | if (!addRays)
|
---|
5525 | {
|
---|
5526 | return ray.mRelativePvsContribution;
|
---|
5527 | }
|
---|
5528 |
|
---|
5529 | // sampled objects are stored in the pvs
|
---|
5530 | for (it = viewcells.begin(); it != viewcells.end(); ++ it)
|
---|
5531 | {
|
---|
5532 | ViewCell *viewCell = *it;
|
---|
5533 |
|
---|
5534 | if (!viewCell->GetValid())
|
---|
5535 | break;
|
---|
5536 |
|
---|
5537 | AddSampleToPvs(
|
---|
5538 | ray.mTerminationObject,
|
---|
5539 | ray.mTermination,
|
---|
5540 | viewCell,
|
---|
5541 | ray.mPdf,
|
---|
5542 | ray.mRelativePvsContribution);
|
---|
5543 |
|
---|
5544 | #if SAMPLE_ORIGIN_OBJECTS
|
---|
5545 |
|
---|
5546 | AddSampleToPvs(
|
---|
5547 | ray.mOriginObject,
|
---|
5548 | ray.mOrigin,
|
---|
5549 | viewCell,
|
---|
5550 | ray.mPdf,
|
---|
5551 | ray.mRelativePvsContribution);
|
---|
5552 | #endif
|
---|
5553 | }
|
---|
5554 |
|
---|
5555 | return ray.mRelativePvsContribution;
|
---|
5556 | }
|
---|
5557 |
|
---|
5558 |
|
---|
5559 | bool VspOspViewCellsManager::AddSampleToPvs(Intersectable *obj,
|
---|
5560 | const Vector3 &hitPoint,
|
---|
5561 | ViewCell *vc,
|
---|
5562 | const float pdf,
|
---|
5563 | float &contribution) const
|
---|
5564 | {
|
---|
5565 | // The hierarchy manager decides about the type of sample cast
|
---|
5566 | return mHierarchyManager->AddSampleToPvs(obj, hitPoint, vc, pdf, contribution);
|
---|
5567 | }
|
---|
5568 |
|
---|
5569 |
|
---|
5570 | void VspOspViewCellsManager::PrepareLoadedViewCells()
|
---|
5571 | {
|
---|
5572 | // TODO
|
---|
5573 | }
|
---|
5574 |
|
---|
5575 |
|
---|
5576 | ViewCellsManager *VspOspViewCellsManager::LoadViewCells(const string &filename,
|
---|
5577 | ObjectContainer *objects,
|
---|
5578 | const bool finalizeViewCells,
|
---|
5579 | BoundingBoxConverter *bconverter)
|
---|
5580 |
|
---|
5581 | {
|
---|
5582 | ViewCellsManager *vm =
|
---|
5583 | ViewCellsManager::LoadViewCells(filename, objects, finalizeViewCells, bconverter);
|
---|
5584 | #if 0
|
---|
5585 | // insert scene objects in tree
|
---|
5586 | mOspTree->InsertObjects(mOspTree->GetRoot(), *objects);
|
---|
5587 | #endif
|
---|
5588 | return vm;
|
---|
5589 | }
|
---|
5590 |
|
---|
5591 |
|
---|
5592 | #if TEST_EVALUATION
|
---|
5593 | void VspOspViewCellsManager::EvalViewCellPartition()
|
---|
5594 | {
|
---|
5595 | const int castSamples = (int)storedRays.size();
|
---|
5596 | char s[64];
|
---|
5597 | char statsPrefix[100];
|
---|
5598 |
|
---|
5599 | Environment::GetSingleton()->GetStringValue("ViewCells.Evaluation.statsPrefix", statsPrefix);
|
---|
5600 |
|
---|
5601 | Debug << "view cell stats prefix: " << statsPrefix << endl;
|
---|
5602 |
|
---|
5603 | // should directional sampling be used?
|
---|
5604 | const bool dirSamples = (mEvaluationSamplingType == SamplingStrategy::DIRECTION_BASED_DISTRIBUTION);
|
---|
5605 |
|
---|
5606 | cout << "reseting pvs ... ";
|
---|
5607 | const bool startFromZero = true;
|
---|
5608 |
|
---|
5609 | // reset pvs and start over from zero
|
---|
5610 | if (startFromZero)
|
---|
5611 | {
|
---|
5612 | mViewCellsTree->ResetPvs();
|
---|
5613 | }
|
---|
5614 | else
|
---|
5615 | {
|
---|
5616 | // start from current sampless
|
---|
5617 | // statistics before casting more samples
|
---|
5618 | cout << "compute new statistics ... ";
|
---|
5619 | sprintf(s, "-%09d-eval.log", castSamples);
|
---|
5620 | string fName = string(statsPrefix) + string(s);
|
---|
5621 |
|
---|
5622 | mViewCellsTree->ExportStats(fName);
|
---|
5623 | cout << "finished" << endl;
|
---|
5624 | }
|
---|
5625 | cout << "finished" << endl;
|
---|
5626 |
|
---|
5627 | cout << "Evaluating view cell partition ... " << endl;
|
---|
5628 |
|
---|
5629 | VssRayContainer evaluationSamples = storedRays;
|
---|
5630 | const int samplingType = mEvaluationSamplingType;
|
---|
5631 |
|
---|
5632 | cout << "computing sample contributions of " << (int)evaluationSamples.size() << " samples ... ";
|
---|
5633 |
|
---|
5634 | ComputeSampleContributions(evaluationSamples, true, false);
|
---|
5635 |
|
---|
5636 | cout << "finished" << endl;
|
---|
5637 |
|
---|
5638 | cout << "compute new statistics ... ";
|
---|
5639 |
|
---|
5640 | // propagate pvs or pvs size information
|
---|
5641 | ObjectPvs pvs;
|
---|
5642 | UpdatePvsForEvaluation(mViewCellsTree->GetRoot(), pvs);
|
---|
5643 |
|
---|
5644 |
|
---|
5645 | /////////////////////
|
---|
5646 | // $§temporary matt: test render cost
|
---|
5647 |
|
---|
5648 | sprintf(s, "-%09d-eval.log", castSamples);
|
---|
5649 | string fileName = string(statsPrefix) + string(s);
|
---|
5650 |
|
---|
5651 | ViewCellContainer leaves;
|
---|
5652 |
|
---|
5653 | mViewCellsTree->CollectLeaves(mViewCellsTree->GetRoot(), leaves);
|
---|
5654 | float rc = 0;
|
---|
5655 |
|
---|
5656 | ViewCellContainer::const_iterator vit, vit_end = leaves.end();
|
---|
5657 |
|
---|
5658 | for (vit = leaves.begin(); vit != vit_end; ++ vit)
|
---|
5659 | {
|
---|
5660 | ViewCell *vc = *vit;
|
---|
5661 | int pvs = vc->GetPvs().CountObjectsInPvs();
|
---|
5662 | float vol = vc->GetVolume();
|
---|
5663 | rc += pvs * vol;
|
---|
5664 | }
|
---|
5665 |
|
---|
5666 | Debug << "\nrendercost hack: " << rc / mViewSpaceBox.GetVolume() << endl;
|
---|
5667 | mViewCellsTree->ExportStats(fileName);
|
---|
5668 | cout << "finished" << endl;
|
---|
5669 |
|
---|
5670 | disposeRays(evaluationSamples, NULL);
|
---|
5671 | }
|
---|
5672 |
|
---|
5673 | #endif
|
---|
5674 | }
|
---|