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 "VspKdTree.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 |
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18 | // HACK
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19 | const static bool SAMPLE_AFTER_SUBDIVISION = true;
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20 | const static bool TEST_EMPTY_VIEW_CELLS = false;
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21 |
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22 |
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23 |
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24 | template <typename T> class myless
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25 | {
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26 | public:
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27 | //bool operator() (HierarchyNode *v1, HierarchyNode *v2) const
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28 | bool operator() (T v1, T v2) const
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29 | {
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30 | return (v1->GetMergeCost() < v2->GetMergeCost());
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31 | }
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32 | };
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33 |
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34 | //typedef priority_queue<ViewCell *, vector<ViewCell *>, myless<vector<ViewCell *>::value_type> > FilterQueue;
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35 |
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36 |
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37 |
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38 | ViewCellsManager::ViewCellsManager():
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39 | mRenderer(NULL),
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40 | mInitialSamples(0),
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41 | mConstructionSamples(0),
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42 | mPostProcessSamples(0),
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43 | mVisualizationSamples(0),
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44 | mTotalAreaValid(false),
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45 | mTotalArea(0.0f),
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46 | mViewCellsFinished(false),
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47 | mMaxPvsSize(9999999),
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48 | mMinPvsSize(0), // one means only empty view cells are invalid
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49 | mMaxPvsRatio(1.0)
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50 | {
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51 | mViewSpaceBox.Initialize();
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52 | ParseEnvironment();
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53 |
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54 | mViewCellsTree = new ViewCellsTree(this);
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55 | }
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56 |
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57 |
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58 | void ViewCellsManager::ParseEnvironment()
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59 | {
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60 | // visualization stuff
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61 | environment->GetBoolValue("ViewCells.Visualization.exportRays", mExportRays);
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62 | environment->GetBoolValue("ViewCells.Visualization.exportGeometry", mExportGeometry);
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63 | environment->GetFloatValue("ViewCells.maxPvsRatio", mMaxPvsRatio);
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64 |
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65 | environment->GetBoolValue("ViewCells.pruneEmptyViewCells", mPruneEmptyViewCells);
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66 |
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67 | // HACK
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68 | if (0)
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69 | mMinPvsSize = mPruneEmptyViewCells ? 1 : 0;
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70 | else
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71 | mMinPvsSize = 0;
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72 |
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73 | environment->GetBoolValue("ViewCells.processOnlyValidViewCells", mOnlyValidViewCells);
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74 |
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75 | environment->GetIntValue("ViewCells.Construction.samples", mConstructionSamples);
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76 | environment->GetIntValue("ViewCells.PostProcess.samples", mPostProcessSamples);
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77 | environment->GetBoolValue("ViewCells.PostProcess.useRaysForMerge", mUseRaysForMerge);
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78 |
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79 | environment->GetIntValue("ViewCells.Visualization.samples", mVisualizationSamples);
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80 |
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81 | environment->GetIntValue("ViewCells.Construction.samplesPerPass", mSamplesPerPass);
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82 | environment->GetBoolValue("ViewCells.exportToFile", mExportViewCells);
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83 |
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84 | environment->GetIntValue("ViewCells.active", mNumActiveViewCells);
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85 | environment->GetBoolValue("ViewCells.PostProcess.compress", mCompressViewCells);
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86 | environment->GetBoolValue("ViewCells.Visualization.useClipPlane", mUseClipPlaneForViz);
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87 | environment->GetBoolValue("ViewCells.PostProcess.merge", mMergeViewCells);
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88 | environment->GetBoolValue("ViewCells.evaluateViewCells", mEvaluateViewCells);
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89 | environment->GetBoolValue("ViewCells.showVisualization", mShowVisualization);
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90 | environment->GetIntValue("ViewCells.Filter.maxSize", mMaxFilterSize);
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91 | environment->GetFloatValue("ViewCells.Filter.width", mFilterWidth);
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92 |
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93 | char buf[100];
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94 | environment->GetStringValue("ViewCells.samplingType", buf);
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95 |
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96 |
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97 | if (strcmp(buf, "box") == 0)
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98 | mSamplingType = Preprocessor::SPATIAL_BOX_BASED_DISTRIBUTION;
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99 | else if (strcmp(buf, "directional") == 0)
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100 | mSamplingType = Preprocessor::DIRECTION_BASED_DISTRIBUTION;
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101 | else
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102 | {
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103 | Debug << "error! wrong sampling type" << endl;
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104 | exit(0);
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105 | }
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106 |
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107 | environment->GetStringValue("ViewCells.Visualization.colorCode", buf);
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108 |
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109 | if (strcmp(buf, "PVS") == 0)
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110 | mColorCode = 1;
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111 | else if (strcmp(buf, "MergedLeaves") == 0)
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112 | mColorCode = 2;
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113 | else if (strcmp(buf, "MergedTreeDiff") == 0)
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114 | mColorCode = 3;
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115 | else
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116 | mColorCode = 0;
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117 |
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118 |
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119 |
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120 | Debug << "***********View Cells options ****************" << endl;
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121 | Debug << "color code: " << mColorCode << endl;
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122 |
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123 | Debug << "export rays: " << mExportRays << endl;
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124 | Debug << "export geometry: " << mExportGeometry << endl;
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125 | Debug << "max pvs ratio: " << mMaxPvsRatio << endl;
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126 |
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127 | Debug << "prune empty view cells: " << mPruneEmptyViewCells << endl;
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128 |
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129 | Debug << "process only valid view cells: " << mOnlyValidViewCells << endl;
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130 | Debug << "construction samples: " << mConstructionSamples << endl;
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131 | Debug << "post process samples: " << mPostProcessSamples << endl;
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132 | Debug << "post process use rays for merge: " << mUseRaysForMerge << endl;
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133 | Debug << "visualization samples: " << mVisualizationSamples << endl;
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134 | Debug << "construction samples per pass: " << mSamplesPerPass << endl;
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135 | Debug << "export to file: " << mExportViewCells << endl;
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136 |
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137 | Debug << "active: " << mNumActiveViewCells << endl;
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138 | Debug << "post process compress: " << mCompressViewCells << endl;
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139 | Debug << "visualization use clipPlane: " << mUseClipPlaneForViz << endl;
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140 | Debug << "post process merge: " << mMergeViewCells << endl;
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141 | Debug << "evaluate view cells: " << mEvaluateViewCells << endl;
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142 | Debug << "sampling type: " << mSamplingType << endl;
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143 | Debug << "show visualization: " << mShowVisualization << endl;
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144 | Debug << "filter width: " << mFilterWidth << endl;
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145 | Debug << "sample after subdivision: " << SAMPLE_AFTER_SUBDIVISION << endl;
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146 | Debug << endl;
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147 | }
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148 |
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149 |
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150 | ViewCellsManager::~ViewCellsManager()
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151 | {
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152 | DEL_PTR(mRenderer);
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153 |
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154 | if (!ViewCellsTreeConstructed())
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155 | CLEAR_CONTAINER(mViewCells);
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156 | else
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157 | DEL_PTR(mViewCellsTree);
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158 |
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159 | CLEAR_CONTAINER(mMeshContainer);
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160 | }
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161 |
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162 |
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163 | void ViewCellsManager::CollectEmptyViewCells()
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164 | {
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165 | mEmptyViewCells.clear();
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166 | ViewCellContainer leaves;
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167 | mViewCellsTree->CollectLeaves(mViewCellsTree->GetRoot(), leaves);
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168 |
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169 | ViewCellContainer::const_iterator it, it_end = leaves.end();
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170 |
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171 | cout << "collecting empty view cells" << endl;
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172 |
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173 | for (it = leaves.begin(); it != it_end; ++ it)
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174 | {
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175 | if ((*it)->GetPvs().Empty())
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176 | {
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177 | mEmptyViewCells.push_back(*it);
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178 | }
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179 | }
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180 | Debug << "empty view cells found: " << (int)mEmptyViewCells.size() << endl;
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181 | }
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182 |
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183 |
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184 | void ViewCellsManager::TestEmptyViewCells(const ObjectContainer &obj)
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185 | {
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186 | ViewCellContainer::const_iterator it, it_end = mEmptyViewCells.end();
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187 |
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188 | char buf[50];
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189 | int i = 0;
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190 | for (it = mEmptyViewCells.begin(); it != it_end; ++ it)
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191 | {
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192 | if (!(*it)->GetPvs().Empty())
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193 | {
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194 | sprintf(buf, "empty-viewcells-%09d.x3d", i/*(*it)->GetId()*/);
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195 | Exporter *exporter = Exporter::GetExporter(buf);
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196 |
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197 | if (exporter && i < 20)
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198 | {
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199 | Ray *pray = (*it)->mPiercingRays[0];
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200 | Debug << "view cell " << (*it)->GetId() << " not empty, pvs: " << (*it)->GetPvs().GetSize() << " " << (int)pray->intersections.size() << endl;
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201 |
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202 | exporter->ExportRays((*it)->mPiercingRays);
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203 |
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204 | exporter->SetFilled();
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205 | exporter->SetForcedMaterial(RgbColor(0,0,1));
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206 |
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207 | for (int j = 0; j < (int)pray->intersections.size(); ++ j)
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208 | {
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209 | if (pray->intersections[j].mObject)
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210 | exporter->ExportIntersectable(pray->intersections[j].mObject);
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211 | }
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212 |
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213 | //exporter->SetWireframe();
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214 | exporter->SetForcedMaterial(RgbColor(0,1,0));
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215 | exporter->ExportGeometry(obj);
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216 |
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217 | exporter->SetFilled();
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218 |
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219 | exporter->SetForcedMaterial(RgbColor(1,0,0));
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220 | ExportViewCellGeometry(exporter, *it);
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221 |
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222 | delete exporter;
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223 | }
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224 |
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225 |
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226 | ++ i;
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227 | }
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228 | }
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229 | Debug << "\nSampled " << i << " new view cells (" << " of " << (int)mEmptyViewCells.size() << ")" << endl << endl;
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230 | }
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231 |
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232 |
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233 | int ViewCellsManager::CastPassSamples(const int samplesPerPass,
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234 | const int sampleType,
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235 | VssRayContainer &passSamples) const
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236 | {
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237 | SimpleRayContainer simpleRays;
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238 |
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239 | preprocessor->GenerateRays(samplesPerPass,
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240 | sampleType,
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241 | simpleRays);
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242 |
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243 | // shoot simple ray and add it to importance samples
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244 | preprocessor->CastRays(simpleRays, passSamples);
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245 |
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246 | return (int)passSamples.size();
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247 | }
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248 |
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249 |
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250 |
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251 | /// helper function which destroys rays or copies them into the output ray container
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252 | inline void disposeRays(VssRayContainer &rays, VssRayContainer *outRays)
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253 | {
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254 | cout << "disposing samples ... ";
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255 | long startTime = GetTime();
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256 | int n = (int)rays.size();
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257 |
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258 | if (outRays)
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259 | {
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260 | VssRayContainer::const_iterator it, it_end = rays.end();
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261 |
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262 | for (it = rays.begin(); it != it_end; ++ it)
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263 | {
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264 | outRays->push_back(*it);
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265 | }
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266 | }
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267 | else
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268 | {
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269 | VssRayContainer::const_iterator it, it_end = rays.end();
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270 |
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271 | for (it = rays.begin(); it != it_end; ++ it)
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272 | {
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273 | //(*it)->Unref();
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274 | if (!(*it)->IsActive())
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275 | delete (*it);
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276 | }
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277 | }
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278 |
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279 | cout << "finished" << endl;
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280 | Debug << "disposed " << n << " samples in " << TimeDiff(startTime, GetTime()) * 1e-3 << " secs" << endl;
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281 | }
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282 |
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283 |
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284 | int ViewCellsManager::Construct(Preprocessor *preprocessor, VssRayContainer *outRays)
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285 | {
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286 | int numSamples = 0;
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287 | SimpleRayContainer simpleRays;
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288 |
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289 | VssRayContainer initialSamples;
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290 |
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291 | cout << "view cell construction: casting " << mInitialSamples << " initial samples ... ";
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292 |
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293 | //-- construction rays => we use uniform samples for this
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294 | CastPassSamples(mInitialSamples,
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295 | mSamplingType,
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296 | initialSamples);
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297 |
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298 | cout << "finished" << endl;
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299 |
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300 |
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301 | // construct view cells
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302 | const int numInitialSamples =
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303 | ConstructSubdivision(preprocessor->mObjects, initialSamples);
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304 |
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305 | numSamples += numInitialSamples;
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306 |
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307 | // rays can be passed or deleted
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308 | disposeRays(initialSamples, outRays);
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309 |
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310 | cout << "testing filter ... ";
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311 |
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312 | TestFilter(preprocessor->mObjects);
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313 |
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314 | cout << "finished" << endl;
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315 |
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316 | // -- stats after contruction
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317 | ResetViewCells();
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318 |
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319 | Debug << "\nView cells after initial sampling:\n" << mCurrentViewCellsStats << endl;
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320 |
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321 | if (1) // export initial view cells
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322 | {
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323 | const char filename[] = "view_cells.wrl";
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324 | Exporter *exporter = Exporter::GetExporter(filename);
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325 |
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326 |
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327 | if (exporter)
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328 | {
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329 | cout << "exporting initial view cells (=leaves) to " << filename << " ... ";
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330 | if (mExportGeometry)
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331 | {
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332 | exporter->ExportGeometry(preprocessor->mObjects);
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333 | }
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334 |
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335 | //exporter->SetWireframe();
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336 | ExportViewCellsForViz(exporter);
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337 |
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338 | delete exporter;
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339 | cout << "finished" << endl;
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340 | }
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341 | }
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342 |
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343 | //-- guided rays are used for further sampling
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344 | const int n = mConstructionSamples; //+initialSamples;
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345 |
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346 | // should we use directional samples?
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347 | bool dirSamples = (mSamplingType == Preprocessor::DIRECTION_BASED_DISTRIBUTION);
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348 |
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349 | // -- the main loop
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350 | while (numSamples < n)
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351 | {
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352 | cout << "casting " << mSamplesPerPass << " samples of " << n << " ... ";
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353 | VssRayContainer constructionSamples;
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354 |
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355 | const int samplingType = mSamplingType;
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356 | /*dirSamples ?
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357 | Preprocessor::DIRECTION_BASED_DISTRIBUTION :
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358 | Preprocessor::SPATIAL_BOX_BASED_DISTRIBUTION;*/
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359 |
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360 | if (0)
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361 | dirSamples = !dirSamples; // toggle sampling method
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362 |
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363 | numSamples += CastPassSamples(mSamplesPerPass,
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364 | samplingType,
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365 | constructionSamples);
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366 |
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367 | cout << "finished" << endl;
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368 |
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369 | cout << "computing sample contribution for " << (int)constructionSamples.size() << " samples ... ";
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370 |
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371 | // TODO: leak?
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372 | if (1 || SAMPLE_AFTER_SUBDIVISION)
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373 | ComputeSampleContributions(constructionSamples, true, false);
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374 |
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375 | cout << "finished" << endl;
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376 |
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377 |
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378 | disposeRays(constructionSamples, outRays);
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379 |
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380 | cout << "total samples: " << numSamples << endl;
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381 | }
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382 |
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383 |
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384 | //-- post processing
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385 | VssRayContainer postProcessSamples;
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386 |
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387 | //-- construction rays
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388 | CastPassSamples(mPostProcessSamples,
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389 | mSamplingType,
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390 | postProcessSamples);
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391 |
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392 |
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393 | // stats before post processing (i.e., merge)
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394 | EvaluateViewCellsStats();
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395 | Debug << "\noriginal view cell partition before post process:\n" << mCurrentViewCellsStats << endl;
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396 |
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397 | mRenderer->RenderScene();
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398 | SimulationStatistics ss;
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399 | dynamic_cast<RenderSimulator *>(mRenderer)->GetStatistics(ss);
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400 |
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401 | Debug << ss << endl;
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402 |
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403 |
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404 |
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405 | cout << "starting post processing and visualization" << endl;
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406 |
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407 |
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408 | // store view cells for postprocessing
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409 | const bool storeViewCells = true;
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410 |
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411 |
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412 | if (SAMPLE_AFTER_SUBDIVISION)
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413 | ComputeSampleContributions(postProcessSamples, true, storeViewCells);
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414 |
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415 | // merge the view cells
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416 | PostProcess(preprocessor->mObjects, postProcessSamples);
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417 |
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418 | // only for testing
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419 | if (TEST_EMPTY_VIEW_CELLS)
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420 | CollectEmptyViewCells();
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421 |
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422 |
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423 | //-- visualization
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424 | if (mShowVisualization)
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425 | {
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426 | VssRayContainer visualizationSamples;
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427 |
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428 | //-- construction rays => we use uniform samples for this
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429 | CastPassSamples(mVisualizationSamples,
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430 | Preprocessor::DIRECTION_BASED_DISTRIBUTION,
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431 | visualizationSamples);
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432 |
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433 | if (SAMPLE_AFTER_SUBDIVISION)
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434 | ComputeSampleContributions(visualizationSamples, true, storeViewCells);
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435 |
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436 | // different visualizations
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437 | Visualize(preprocessor->mObjects, visualizationSamples);
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438 |
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439 | disposeRays(visualizationSamples, outRays);
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440 | }
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441 |
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442 | // needed to fix empty view cells
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443 | //SetValidity(0, 99999999999);
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444 |
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445 | if (mEvaluateViewCells)
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446 | {
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447 | EvalViewCellPartition(preprocessor);
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448 | }
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449 |
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450 | if (0)
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451 | {
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452 | ViewCellContainer leaves;
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453 | mViewCellsTree->CollectLeaves(mViewCellsTree->GetRoot(), leaves);
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454 | mViewCellsTree->ResetPvs();
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455 | VssRayContainer dummyRays;
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456 | CastPassSamples(mInitialSamples, mSamplingType, dummyRays);
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457 |
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458 | //ComputeSampleContributions(initialSamples, true, false);
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459 | ComputeSampleContributions(dummyRays, true, false);
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460 |
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461 | ViewCellContainer::const_iterator it, it_end = leaves.end();
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462 |
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463 | for (it = leaves.begin(); it != it_end; ++ it)
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464 | {
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465 | mViewCellsTree->PropagatePvs(*it);
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466 | }
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467 |
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468 | mViewCellsTree->ExportStats("dummy.log");
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469 | }
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470 |
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471 | return numSamples;
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472 | }
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473 |
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474 |
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475 | void ViewCellsManager::EvalViewCellPartition(Preprocessor *preprocessor)
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476 | {
|
---|
477 | int samplesPerPass;
|
---|
478 | int numSamples;
|
---|
479 | int castSamples = 0;
|
---|
480 |
|
---|
481 | char s[64];
|
---|
482 |
|
---|
483 | environment->GetIntValue("ViewCells.Evaluation.samplesPerPass", samplesPerPass);
|
---|
484 | environment->GetIntValue("ViewCells.Evaluation.samples", numSamples);
|
---|
485 |
|
---|
486 | char statsPrefix[100];
|
---|
487 | environment->GetStringValue("ViewCells.Evaluation.statsPrefix", statsPrefix);
|
---|
488 |
|
---|
489 | Debug << "view cell evaluation samples per pass: " << samplesPerPass << endl;
|
---|
490 | Debug << "view cell evaluation samples: " << numSamples << endl;
|
---|
491 | Debug << "view cell stats prefix: " << statsPrefix << endl;
|
---|
492 |
|
---|
493 | //VssRayContainer outRays;
|
---|
494 | // should directional sampling be used?
|
---|
495 | bool dirSamples = mSamplingType == Preprocessor::DIRECTION_BASED_DISTRIBUTION;
|
---|
496 |
|
---|
497 | cout << "Evaluating view cell partition" << endl;
|
---|
498 |
|
---|
499 | ViewCellContainer leaves;
|
---|
500 | mViewCellsTree->CollectLeaves(mViewCellsTree->GetRoot(), leaves);
|
---|
501 |
|
---|
502 | bool startFromZero = true;
|
---|
503 |
|
---|
504 | // reset pvs and start over from zero
|
---|
505 | if (startFromZero)
|
---|
506 | {
|
---|
507 | mViewCellsTree->ResetPvs();
|
---|
508 | }
|
---|
509 | else // statistics without addidtional samples
|
---|
510 | {
|
---|
511 | cout << "compute new statistics ... ";
|
---|
512 | sprintf(s, "-%09d-eval.log", castSamples);
|
---|
513 | string fName = string(statsPrefix) + string(s);
|
---|
514 |
|
---|
515 | mViewCellsTree->ExportStats(fName);
|
---|
516 | cout << "finished" << endl;
|
---|
517 | }
|
---|
518 |
|
---|
519 |
|
---|
520 | while (castSamples < numSamples)
|
---|
521 | {
|
---|
522 | VssRayContainer evaluationSamples;
|
---|
523 |
|
---|
524 | const int samplingType = mSamplingType;
|
---|
525 | /* dirSamples ?
|
---|
526 | Preprocessor::DIRECTION_BASED_DISTRIBUTION :
|
---|
527 | Preprocessor::SPATIAL_BOX_BASED_DISTRIBUTION;
|
---|
528 | */
|
---|
529 | //-- construction rays => we use uniform samples for this
|
---|
530 | CastPassSamples(samplesPerPass, samplingType, evaluationSamples);
|
---|
531 |
|
---|
532 | castSamples += samplesPerPass;
|
---|
533 |
|
---|
534 | cout << "casting " << (int)evaluationSamples.size() << " samples " << endl;
|
---|
535 |
|
---|
536 | ComputeSampleContributions(evaluationSamples, true, false);
|
---|
537 |
|
---|
538 | cout << "compute new statistics ... ";
|
---|
539 |
|
---|
540 | ViewCellContainer::const_iterator it, it_end = leaves.end();
|
---|
541 |
|
---|
542 | for (it = leaves.begin(); it != it_end; ++ it)
|
---|
543 | {
|
---|
544 | mViewCellsTree->PropagatePvs(*it);
|
---|
545 | }
|
---|
546 |
|
---|
547 | // output stats
|
---|
548 | sprintf(s, "-%09d-eval.log", castSamples);
|
---|
549 | string fileName = string(statsPrefix) + string(s);
|
---|
550 |
|
---|
551 | mViewCellsTree->ExportStats(fileName);
|
---|
552 |
|
---|
553 | cout << "finished" << endl;
|
---|
554 |
|
---|
555 | disposeRays(evaluationSamples, NULL);
|
---|
556 | }
|
---|
557 |
|
---|
558 | // find empty view cells bug
|
---|
559 | if (TEST_EMPTY_VIEW_CELLS)
|
---|
560 | TestEmptyViewCells(preprocessor->mObjects);
|
---|
561 | }
|
---|
562 |
|
---|
563 |
|
---|
564 | inline float EvalMergeCost(ViewCell *root, ViewCell *candidate)
|
---|
565 | {
|
---|
566 | return root->GetPvs().GetPvsHomogenity(candidate->GetPvs());
|
---|
567 | }
|
---|
568 |
|
---|
569 |
|
---|
570 | int GetBestViewCellIdx(ViewCell *root, const ViewCellContainer &neighborhood)
|
---|
571 | {
|
---|
572 | int bestViewCellIdx = 0;
|
---|
573 |
|
---|
574 | float mergeCost = Limits::Infinity;
|
---|
575 | int i = 0;
|
---|
576 |
|
---|
577 | ViewCellContainer::const_iterator it, it_end = neighborhood.end();
|
---|
578 |
|
---|
579 | for (it = neighborhood.begin(); it != it_end; ++ it, ++ i)
|
---|
580 | {
|
---|
581 | const float mc = EvalMergeCost(root, *it);
|
---|
582 |
|
---|
583 | if (mc < mergeCost)
|
---|
584 | {
|
---|
585 | mergeCost = mc;
|
---|
586 | bestViewCellIdx = i;
|
---|
587 | }
|
---|
588 | }
|
---|
589 |
|
---|
590 | return bestViewCellIdx;
|
---|
591 | }
|
---|
592 |
|
---|
593 |
|
---|
594 | ViewCell *ViewCellsManager::ConstructLocalMergeTree(ViewCell *currentViewCell,
|
---|
595 | const ViewCellContainer &viewCells)
|
---|
596 | {
|
---|
597 | ViewCell *root = currentViewCell;
|
---|
598 | ViewCellContainer neighborhood = viewCells;
|
---|
599 |
|
---|
600 | ViewCellContainer::const_iterator it, it_end = neighborhood.end();
|
---|
601 |
|
---|
602 | const int n = min(mMaxFilterSize, (int)neighborhood.size());
|
---|
603 | //-- use priority queue to merge leaf pairs
|
---|
604 |
|
---|
605 | //cout << "neighborhood: " << neighborhood.size() << endl;
|
---|
606 | //const float maxAvgCost = 350;
|
---|
607 | for (int nMergedViewCells = 0; nMergedViewCells < n; ++ nMergedViewCells)
|
---|
608 | {
|
---|
609 | const int bestViewCellIdx = GetBestViewCellIdx(root, neighborhood);
|
---|
610 |
|
---|
611 | ViewCell *bestViewCell = neighborhood[bestViewCellIdx];
|
---|
612 |
|
---|
613 | // remove from vector
|
---|
614 | swap(neighborhood[bestViewCellIdx], neighborhood.back());
|
---|
615 | neighborhood.pop_back();
|
---|
616 |
|
---|
617 | // cout << "vc idx: " << bestViewCellIdx << endl;
|
---|
618 | if (!bestViewCell || !root)
|
---|
619 | cout << "warning!!" << endl;
|
---|
620 |
|
---|
621 | // create new root of the hierarchy
|
---|
622 | root = MergeViewCells(root, bestViewCell);
|
---|
623 | }
|
---|
624 |
|
---|
625 | return root;
|
---|
626 | }
|
---|
627 |
|
---|
628 |
|
---|
629 | struct SortableViewCellEntry {
|
---|
630 |
|
---|
631 | SortableViewCellEntry() {}
|
---|
632 | SortableViewCellEntry(const float v, ViewCell *cell):mValue(v), mViewCell(cell) {}
|
---|
633 |
|
---|
634 | float mValue;
|
---|
635 | ViewCell *mViewCell;
|
---|
636 |
|
---|
637 | friend bool operator<(const SortableViewCellEntry &a, const SortableViewCellEntry &b) {
|
---|
638 | return a.mValue < b.mValue;
|
---|
639 | }
|
---|
640 | };
|
---|
641 |
|
---|
642 | ViewCell *
|
---|
643 | ViewCellsManager::ConstructLocalMergeTree2(ViewCell *currentViewCell,
|
---|
644 | const ViewCellContainer &viewCells)
|
---|
645 | {
|
---|
646 |
|
---|
647 | vector<SortableViewCellEntry> neighborhood(viewCells.size());
|
---|
648 | int i, j;
|
---|
649 | for (i = 0, j = 0; i < viewCells.size(); i++) {
|
---|
650 | if (viewCells[i] != currentViewCell)
|
---|
651 | neighborhood[j++] = SortableViewCellEntry(
|
---|
652 | EvalMergeCost(currentViewCell, viewCells[i]),
|
---|
653 | viewCells[i]);
|
---|
654 | }
|
---|
655 | neighborhood.resize(j);
|
---|
656 |
|
---|
657 | sort(neighborhood.begin(), neighborhood.end());
|
---|
658 |
|
---|
659 | ViewCell *root = currentViewCell;
|
---|
660 |
|
---|
661 | vector<SortableViewCellEntry>::const_iterator it, it_end = neighborhood.end();
|
---|
662 |
|
---|
663 | const int n = min(mMaxFilterSize, (int)neighborhood.size());
|
---|
664 | //-- use priority queue to merge leaf pairs
|
---|
665 |
|
---|
666 | //cout << "neighborhood: " << neighborhood.size() << endl;
|
---|
667 | for (int nMergedViewCells = 0; nMergedViewCells < n; ++ nMergedViewCells)
|
---|
668 | {
|
---|
669 | ViewCell *bestViewCell = neighborhood[nMergedViewCells].mViewCell;
|
---|
670 | //cout <<nMergedViewCells<<":"<<"homogenity=" <<neighborhood[nMergedViewCells].mValue<<endl;
|
---|
671 | // create new root of the hierarchy
|
---|
672 | root = MergeViewCells(root, bestViewCell);
|
---|
673 | // set negative cost so that this view cell gets deleted
|
---|
674 | root->SetMergeCost(-1.0f);
|
---|
675 | }
|
---|
676 |
|
---|
677 | return root;
|
---|
678 | }
|
---|
679 |
|
---|
680 | void
|
---|
681 | ViewCellsManager::DeleteLocalMergeTree(ViewCell *vc
|
---|
682 | ) const
|
---|
683 | {
|
---|
684 | if (!vc->IsLeaf() && vc->GetMergeCost() < 0.0f) {
|
---|
685 | ViewCellInterior *vci = (ViewCellInterior *) vc;
|
---|
686 | ViewCellContainer::const_iterator it, it_end = vci->mChildren.end();
|
---|
687 |
|
---|
688 | for (it = vci->mChildren.begin(); it != it_end; ++ it)
|
---|
689 | DeleteLocalMergeTree(*it);
|
---|
690 | vci->mChildren.clear();
|
---|
691 | delete vci;
|
---|
692 | }
|
---|
693 | }
|
---|
694 |
|
---|
695 | bool ViewCellsManager::CheckValidity(ViewCell *vc,
|
---|
696 | int minPvsSize,
|
---|
697 | int maxPvsSize) const
|
---|
698 | {
|
---|
699 |
|
---|
700 | if ((vc->GetPvs().GetSize() > maxPvsSize) ||
|
---|
701 | (vc->GetPvs().GetSize() < minPvsSize))
|
---|
702 | {
|
---|
703 | return false;
|
---|
704 | }
|
---|
705 |
|
---|
706 | return true;
|
---|
707 | }
|
---|
708 |
|
---|
709 |
|
---|
710 | bool ViewCellsManager::EqualToSpatialNode(ViewCell *viewCell) const
|
---|
711 | {
|
---|
712 | return false;
|
---|
713 | }
|
---|
714 |
|
---|
715 | int ViewCellsManager::ComputeBoxIntersections(const AxisAlignedBox3 &box,
|
---|
716 | ViewCellContainer &viewCells) const
|
---|
717 | {
|
---|
718 | return 0;
|
---|
719 | };
|
---|
720 |
|
---|
721 | AxisAlignedBox3 ViewCellsManager::GetFilterBBox(const Vector3 &viewPoint,
|
---|
722 | const float width) const
|
---|
723 | {
|
---|
724 | Vector3 min = viewPoint - width * 0.5f;
|
---|
725 | Vector3 max = viewPoint + width * 0.5;
|
---|
726 |
|
---|
727 | return AxisAlignedBox3(min, max);
|
---|
728 | }
|
---|
729 |
|
---|
730 |
|
---|
731 | void ViewCellsManager::GetPrVS(const Vector3 &viewPoint, PrVs &prvs)
|
---|
732 | {
|
---|
733 | const AxisAlignedBox3 box = GetFilterBBox(viewPoint, mFilterWidth);
|
---|
734 |
|
---|
735 | ViewCell *currentViewCell = GetViewCell(viewPoint);
|
---|
736 |
|
---|
737 | ViewCellContainer viewCells;
|
---|
738 | ComputeBoxIntersections(box, viewCells);
|
---|
739 |
|
---|
740 | ViewCell *root = ConstructLocalMergeTree2(currentViewCell, viewCells);
|
---|
741 |
|
---|
742 | prvs.mViewCell = root;
|
---|
743 | //prvs.mPvs = root->GetPvs();
|
---|
744 | }
|
---|
745 |
|
---|
746 |
|
---|
747 | bool ViewCellsManager::ViewCellsTreeConstructed() const
|
---|
748 | {
|
---|
749 | return mViewCellsTree->GetRoot();
|
---|
750 | }
|
---|
751 |
|
---|
752 |
|
---|
753 | void ViewCellsManager::SetValidity(ViewCell *vc,
|
---|
754 | int minPvs,
|
---|
755 | int maxPvs) const
|
---|
756 | {
|
---|
757 | vc->SetValid(CheckValidity(vc, minPvs, maxPvs));
|
---|
758 | }
|
---|
759 |
|
---|
760 |
|
---|
761 | void
|
---|
762 | ViewCellsManager::SetValidity(
|
---|
763 | int minPvsSize,
|
---|
764 | int maxPvsSize) const
|
---|
765 | {
|
---|
766 | ViewCellContainer::const_iterator it, it_end = mViewCells.end();
|
---|
767 |
|
---|
768 | for (it = mViewCells.begin(); it != it_end; ++ it) {
|
---|
769 | SetValidity(*it, minPvsSize, maxPvsSize);
|
---|
770 | }
|
---|
771 | }
|
---|
772 |
|
---|
773 | void
|
---|
774 | ViewCellsManager::SetValidityPercentage(
|
---|
775 | const float minValid,
|
---|
776 | const float maxValid
|
---|
777 | )
|
---|
778 | {
|
---|
779 | sort(mViewCells.begin(), mViewCells.end(), ViewCell::SmallerPvs);
|
---|
780 |
|
---|
781 | int start = mViewCells.size()*minValid;
|
---|
782 | int end = mViewCells.size()*maxValid;
|
---|
783 |
|
---|
784 | for (int i=0; i < mViewCells.size(); i++)
|
---|
785 | mViewCells[i]->SetValid(i >= start && i <= end);
|
---|
786 | }
|
---|
787 |
|
---|
788 | int
|
---|
789 | ViewCellsManager::CountValidViewcells() const
|
---|
790 | {
|
---|
791 | ViewCellContainer::const_iterator it, it_end = mViewCells.end();
|
---|
792 | int valid = 0;
|
---|
793 | for (it = mViewCells.begin(); it != it_end; ++ it) {
|
---|
794 | if ((*it)->GetValid())
|
---|
795 | valid ++;
|
---|
796 | }
|
---|
797 | return valid;
|
---|
798 | }
|
---|
799 |
|
---|
800 |
|
---|
801 | bool ViewCellsManager::LoadViewCellsGeometry(const string filename)
|
---|
802 | {
|
---|
803 | X3dParser parser;
|
---|
804 |
|
---|
805 | environment->GetFloatValue("ViewCells.height", parser.mViewCellHeight);
|
---|
806 |
|
---|
807 | bool success = parser.ParseFile(filename, *this);
|
---|
808 | Debug << (int)mViewCells.size() << " view cells loaded" << endl;
|
---|
809 |
|
---|
810 | return success;
|
---|
811 | }
|
---|
812 |
|
---|
813 |
|
---|
814 | bool ViewCellsManager::GetViewPoint(Vector3 &viewPoint) const
|
---|
815 | {
|
---|
816 | viewPoint = mViewSpaceBox.GetRandomPoint();
|
---|
817 |
|
---|
818 | return true;
|
---|
819 | }
|
---|
820 |
|
---|
821 |
|
---|
822 | float ViewCellsManager::GetViewSpaceVolume()
|
---|
823 | {
|
---|
824 | return mViewSpaceBox.GetVolume() * (2.0f * sqr((float)M_PI));
|
---|
825 | }
|
---|
826 |
|
---|
827 |
|
---|
828 | bool ViewCellsManager::ViewPointValid(const Vector3 &viewPoint) const
|
---|
829 | {
|
---|
830 | if (!ViewCellsConstructed())
|
---|
831 | return mViewSpaceBox.IsInside(viewPoint);
|
---|
832 | else {
|
---|
833 | if (!mViewSpaceBox.IsInside(viewPoint))
|
---|
834 | return false;
|
---|
835 | ViewCell *viewcell = GetViewCell(viewPoint);
|
---|
836 | if (!viewcell || !viewcell->GetValid())
|
---|
837 | return false;
|
---|
838 | }
|
---|
839 | return true;
|
---|
840 | }
|
---|
841 |
|
---|
842 |
|
---|
843 | float
|
---|
844 | ViewCellsManager::ComputeSampleContributions(const VssRayContainer &rays,
|
---|
845 | const bool addRays,
|
---|
846 | const bool storeViewCells
|
---|
847 | )
|
---|
848 | {
|
---|
849 | // view cells not yet constructed
|
---|
850 | if (!ViewCellsConstructed())
|
---|
851 | return 0.0f;
|
---|
852 |
|
---|
853 | VssRayContainer::const_iterator it, it_end = rays.end();
|
---|
854 |
|
---|
855 | float sum = 0.0f;
|
---|
856 | for (it = rays.begin(); it != it_end; ++ it)
|
---|
857 | {
|
---|
858 | sum += ComputeSampleContributions(*(*it), addRays, storeViewCells);
|
---|
859 | //ComputeSampleContributions(*(*it), addRays);
|
---|
860 | // sum += (*it)->mPvsContribution;
|
---|
861 | }
|
---|
862 |
|
---|
863 | return sum;
|
---|
864 | }
|
---|
865 |
|
---|
866 |
|
---|
867 | void ViewCellsManager::EvaluateViewCellsStats()
|
---|
868 | {
|
---|
869 | mCurrentViewCellsStats.Reset();
|
---|
870 |
|
---|
871 | ViewCellContainer::const_iterator it, it_end = mViewCells.end();
|
---|
872 |
|
---|
873 | for (it = mViewCells.begin(); it != it_end; ++ it)
|
---|
874 | {
|
---|
875 | mViewCellsTree->UpdateViewCellsStats(*it, mCurrentViewCellsStats);
|
---|
876 | }
|
---|
877 | }
|
---|
878 |
|
---|
879 |
|
---|
880 | void ViewCellsManager::EvaluateRenderStatistics(float &totalRenderCost,
|
---|
881 | float &expectedRenderCost,
|
---|
882 | float &deviation,
|
---|
883 | float &variance,
|
---|
884 | int &totalPvs,
|
---|
885 | float &avgRenderCost)
|
---|
886 | {
|
---|
887 | ViewCellContainer::const_iterator it, it_end = mViewCells.end();
|
---|
888 |
|
---|
889 |
|
---|
890 | //-- compute expected value
|
---|
891 |
|
---|
892 | totalRenderCost = 0;
|
---|
893 | totalPvs = 0;
|
---|
894 |
|
---|
895 | for (it = mViewCells.begin(); it != it_end; ++ it)
|
---|
896 | {
|
---|
897 | ViewCell *vc = *it;
|
---|
898 | totalRenderCost += vc->GetPvs().GetSize() * vc->GetVolume();
|
---|
899 | totalPvs += (int)vc->GetPvs().GetSize();
|
---|
900 | }
|
---|
901 |
|
---|
902 | // normalize with view space box
|
---|
903 | totalRenderCost /= mViewSpaceBox.GetVolume();
|
---|
904 | expectedRenderCost = totalRenderCost / (float)mViewCells.size();
|
---|
905 | avgRenderCost = totalPvs / (float)mViewCells.size();
|
---|
906 |
|
---|
907 |
|
---|
908 | //-- compute standard defiation
|
---|
909 | variance = 0;
|
---|
910 | deviation = 0;
|
---|
911 |
|
---|
912 | for (it = mViewCells.begin(); it != it_end; ++ it)
|
---|
913 | {
|
---|
914 | ViewCell *vc = *it;
|
---|
915 |
|
---|
916 | float renderCost = vc->GetPvs().GetSize() * vc->GetVolume();
|
---|
917 | float dev;
|
---|
918 |
|
---|
919 | if (1)
|
---|
920 | dev = fabs(avgRenderCost - (float)vc->GetPvs().GetSize());
|
---|
921 | else
|
---|
922 | dev = fabs(expectedRenderCost - renderCost);
|
---|
923 |
|
---|
924 | deviation += dev;
|
---|
925 | variance += dev * dev;
|
---|
926 | }
|
---|
927 |
|
---|
928 | variance /= (float)mViewCells.size();
|
---|
929 | deviation /= (float)mViewCells.size();
|
---|
930 | }
|
---|
931 |
|
---|
932 |
|
---|
933 |
|
---|
934 | void ViewCellsManager::AddViewCell(ViewCell *viewCell)
|
---|
935 | {
|
---|
936 | mViewCells.push_back(viewCell);
|
---|
937 | }
|
---|
938 |
|
---|
939 |
|
---|
940 | float ViewCellsManager::GetArea(ViewCell *viewCell) const
|
---|
941 | {
|
---|
942 | return viewCell->GetArea();
|
---|
943 | }
|
---|
944 |
|
---|
945 |
|
---|
946 | float ViewCellsManager::GetVolume(ViewCell *viewCell) const
|
---|
947 | {
|
---|
948 | return viewCell->GetVolume();
|
---|
949 | }
|
---|
950 |
|
---|
951 |
|
---|
952 | void ViewCellsManager::DeriveViewCells(const ObjectContainer &objects,
|
---|
953 | ViewCellContainer &viewCells,
|
---|
954 | const int maxViewCells) const
|
---|
955 | {
|
---|
956 | // maximal max viewcells
|
---|
957 | int limit = maxViewCells > 0 ?
|
---|
958 | Min((int)objects.size(), maxViewCells) : (int)objects.size();
|
---|
959 |
|
---|
960 | for (int i = 0; i < limit; ++ i)
|
---|
961 | {
|
---|
962 | Intersectable *object = objects[i];
|
---|
963 |
|
---|
964 | // extract the mesh instances
|
---|
965 | if (object->Type() == Intersectable::MESH_INSTANCE)
|
---|
966 | {
|
---|
967 | MeshInstance *inst = dynamic_cast<MeshInstance *>(object);
|
---|
968 |
|
---|
969 | ViewCell *viewCell = GenerateViewCell(inst->GetMesh());
|
---|
970 | viewCells.push_back(viewCell);
|
---|
971 | }
|
---|
972 | //TODO: transformed meshes
|
---|
973 | }
|
---|
974 | }
|
---|
975 |
|
---|
976 |
|
---|
977 | ViewCell *ViewCellsManager::ExtrudeViewCell(const Triangle3 &baseTri,
|
---|
978 | const float height) const
|
---|
979 | {
|
---|
980 | // one mesh per view cell
|
---|
981 | Mesh *mesh = new Mesh();
|
---|
982 |
|
---|
983 | //-- construct prism
|
---|
984 |
|
---|
985 | // bottom
|
---|
986 | mesh->mFaces.push_back(new Face(2,1,0));
|
---|
987 | // top
|
---|
988 | mesh->mFaces.push_back(new Face(3,4,5));
|
---|
989 | // sides
|
---|
990 | mesh->mFaces.push_back(new Face(1, 4, 3, 0));
|
---|
991 | mesh->mFaces.push_back(new Face(2, 5, 4, 1));
|
---|
992 | mesh->mFaces.push_back(new Face(3, 5, 2, 0));
|
---|
993 |
|
---|
994 | //--- extrude new vertices for top of prism
|
---|
995 | Vector3 triNorm = baseTri.GetNormal();
|
---|
996 |
|
---|
997 | Triangle3 topTri;
|
---|
998 |
|
---|
999 | // add base vertices and calculate top vertices
|
---|
1000 | for (int i = 0; i < 3; ++ i)
|
---|
1001 | mesh->mVertices.push_back(baseTri.mVertices[i]);
|
---|
1002 |
|
---|
1003 | // add top vertices
|
---|
1004 | for (int i = 0; i < 3; ++ i)
|
---|
1005 | mesh->mVertices.push_back(baseTri.mVertices[i] + height * triNorm);
|
---|
1006 |
|
---|
1007 | mesh->Preprocess();
|
---|
1008 |
|
---|
1009 | return GenerateViewCell(mesh);
|
---|
1010 | }
|
---|
1011 |
|
---|
1012 |
|
---|
1013 | void ViewCellsManager::FinalizeViewCells(const bool createMesh)
|
---|
1014 | {
|
---|
1015 | ViewCellContainer::const_iterator it, it_end = mViewCells.end();
|
---|
1016 |
|
---|
1017 | // volume and area of the view cells are recomputed and a view cell mesh is created
|
---|
1018 | for (it = mViewCells.begin(); it != it_end; ++ it)
|
---|
1019 | {
|
---|
1020 | Finalize(*it, createMesh);
|
---|
1021 | }
|
---|
1022 |
|
---|
1023 | mTotalAreaValid = false;
|
---|
1024 | }
|
---|
1025 |
|
---|
1026 |
|
---|
1027 | void ViewCellsManager::Finalize(ViewCell *viewCell, const bool createMesh)
|
---|
1028 | {
|
---|
1029 | // implemented in subclasses
|
---|
1030 | }
|
---|
1031 |
|
---|
1032 |
|
---|
1033 | ViewCellInterior *ViewCellsManager::MergeViewCells(ViewCell *left, ViewCell *right) const
|
---|
1034 | {
|
---|
1035 | // generate parent view cell
|
---|
1036 | ViewCellInterior *vc = new ViewCellInterior();//GenerateViewCell();
|
---|
1037 |
|
---|
1038 | vc->GetPvs() = left->GetPvs();
|
---|
1039 | // merge pvs
|
---|
1040 | vc->GetPvs().Merge(right->GetPvs());
|
---|
1041 |
|
---|
1042 | //-- merge ray sets
|
---|
1043 | if (0)
|
---|
1044 | {
|
---|
1045 | stable_sort(left->mPiercingRays.begin(), left->mPiercingRays.end());
|
---|
1046 | stable_sort(right->mPiercingRays.begin(), right->mPiercingRays.end());
|
---|
1047 |
|
---|
1048 | std::merge(left->mPiercingRays.begin(), left->mPiercingRays.end(),
|
---|
1049 | right->mPiercingRays.begin(), right->mPiercingRays.end(),
|
---|
1050 | vc->mPiercingRays.begin());
|
---|
1051 | }
|
---|
1052 |
|
---|
1053 | // set only links to child (not from child to parent, maybe not wished!!)
|
---|
1054 | vc->mChildren.push_back(left);
|
---|
1055 | vc->mChildren.push_back(right);
|
---|
1056 |
|
---|
1057 | return vc;
|
---|
1058 | }
|
---|
1059 |
|
---|
1060 |
|
---|
1061 | ViewCellInterior *ViewCellsManager::MergeViewCells(ViewCellContainer &children) const
|
---|
1062 | {
|
---|
1063 | ViewCellInterior *vc = new ViewCellInterior();//GenerateViewCell();
|
---|
1064 |
|
---|
1065 | ViewCellContainer::const_iterator it, it_end = children.end();
|
---|
1066 |
|
---|
1067 | for (it = children.begin(); it != it_end; ++ it)
|
---|
1068 | {
|
---|
1069 | // merge pvs
|
---|
1070 | vc->GetPvs().Merge((*it)->GetPvs());
|
---|
1071 | vc->mChildren.push_back(*it);
|
---|
1072 | //vc->SetupChildLink(*it);
|
---|
1073 | }
|
---|
1074 |
|
---|
1075 | return vc;
|
---|
1076 | }
|
---|
1077 |
|
---|
1078 |
|
---|
1079 | void ViewCellsManager::SetRenderer(Renderer *renderer)
|
---|
1080 | {
|
---|
1081 | mRenderer = renderer;
|
---|
1082 | }
|
---|
1083 |
|
---|
1084 |
|
---|
1085 | ViewCellsTree *ViewCellsManager::GetViewCellsTree()
|
---|
1086 | {
|
---|
1087 | return mViewCellsTree;
|
---|
1088 | }
|
---|
1089 |
|
---|
1090 |
|
---|
1091 | void ViewCellsManager::SetVisualizationSamples(const int visSamples)
|
---|
1092 | {
|
---|
1093 | mVisualizationSamples = visSamples;
|
---|
1094 | }
|
---|
1095 |
|
---|
1096 |
|
---|
1097 | void ViewCellsManager::SetConstructionSamples(const int constructionSamples)
|
---|
1098 | {
|
---|
1099 | mConstructionSamples = constructionSamples;
|
---|
1100 | }
|
---|
1101 |
|
---|
1102 |
|
---|
1103 | void ViewCellsManager::SetInitialSamples(const int initialSamples)
|
---|
1104 | {
|
---|
1105 | mInitialSamples = initialSamples;
|
---|
1106 | }
|
---|
1107 |
|
---|
1108 |
|
---|
1109 | void ViewCellsManager::SetPostProcessSamples(const int postProcessSamples)
|
---|
1110 | {
|
---|
1111 | mPostProcessSamples = postProcessSamples;
|
---|
1112 | }
|
---|
1113 |
|
---|
1114 |
|
---|
1115 | int ViewCellsManager::GetVisualizationSamples() const
|
---|
1116 | {
|
---|
1117 | return mVisualizationSamples;
|
---|
1118 | }
|
---|
1119 |
|
---|
1120 |
|
---|
1121 | int ViewCellsManager::GetConstructionSamples() const
|
---|
1122 | {
|
---|
1123 | return mConstructionSamples;
|
---|
1124 | }
|
---|
1125 |
|
---|
1126 |
|
---|
1127 | int ViewCellsManager::GetPostProcessSamples() const
|
---|
1128 | {
|
---|
1129 | return mPostProcessSamples;
|
---|
1130 | }
|
---|
1131 |
|
---|
1132 |
|
---|
1133 | void ViewCellsManager::GetPvsStatistics(PvsStatistics &stat)
|
---|
1134 | {
|
---|
1135 | ViewCellContainer::const_iterator it = mViewCells.begin();
|
---|
1136 | stat.viewcells = 0;
|
---|
1137 | stat.minPvs = 100000000;
|
---|
1138 | stat.maxPvs = 0;
|
---|
1139 | stat.avgPvs = 0.0f;
|
---|
1140 |
|
---|
1141 | for (; it != mViewCells.end(); ++it) {
|
---|
1142 | ViewCell *viewcell = *it;
|
---|
1143 | int pvsSize = viewcell->GetPvs().GetSize();
|
---|
1144 | if ( pvsSize < stat.minPvs)
|
---|
1145 | stat.minPvs = pvsSize;
|
---|
1146 | if (pvsSize > stat.maxPvs)
|
---|
1147 | stat.maxPvs = pvsSize;
|
---|
1148 | stat.avgPvs += pvsSize;
|
---|
1149 | stat.viewcells++;
|
---|
1150 | }
|
---|
1151 | if (stat.viewcells)
|
---|
1152 | stat.avgPvs/=stat.viewcells;
|
---|
1153 | }
|
---|
1154 |
|
---|
1155 |
|
---|
1156 | void ViewCellsManager::PrintPvsStatistics(ostream &s)
|
---|
1157 | {
|
---|
1158 | s<<"############# Viewcell PVS STAT ##################\n";
|
---|
1159 | PvsStatistics pvsStat;
|
---|
1160 | GetPvsStatistics(pvsStat);
|
---|
1161 | s<<"#AVG_PVS\n"<<pvsStat.avgPvs<<endl;
|
---|
1162 | s<<"#MAX_PVS\n"<<pvsStat.maxPvs<<endl;
|
---|
1163 | s<<"#MIN_PVS\n"<<pvsStat.minPvs<<endl;
|
---|
1164 | }
|
---|
1165 |
|
---|
1166 |
|
---|
1167 | int ViewCellsManager::CastBeam(Beam &beam)
|
---|
1168 | {
|
---|
1169 | return 0;
|
---|
1170 | }
|
---|
1171 |
|
---|
1172 |
|
---|
1173 | ViewCellContainer &ViewCellsManager::GetViewCells()
|
---|
1174 | {
|
---|
1175 | return mViewCells;
|
---|
1176 | }
|
---|
1177 |
|
---|
1178 |
|
---|
1179 | void ViewCellsManager::SetViewSpaceBox(const AxisAlignedBox3 &box)
|
---|
1180 | {
|
---|
1181 | mViewSpaceBox = box;
|
---|
1182 |
|
---|
1183 | CreateClipPlane();
|
---|
1184 |
|
---|
1185 | mTotalAreaValid = false;
|
---|
1186 | }
|
---|
1187 |
|
---|
1188 |
|
---|
1189 | void ViewCellsManager::CreateClipPlane()
|
---|
1190 | {
|
---|
1191 | int axis = 0;
|
---|
1192 | float pos;
|
---|
1193 |
|
---|
1194 | environment->GetFloatValue("ViewCells.Visualization.clipPlanePos", pos);
|
---|
1195 |
|
---|
1196 | Vector3 point = mViewSpaceBox.Min() + mViewSpaceBox.Size() * pos;
|
---|
1197 |
|
---|
1198 | if (mUseClipPlaneForViz)
|
---|
1199 | environment->GetIntValue("ViewCells.Visualization.clipPlaneAxis", axis);
|
---|
1200 |
|
---|
1201 | Vector3 normal(0,0,0);
|
---|
1202 | normal[axis] = 1;
|
---|
1203 |
|
---|
1204 | mClipPlane = Plane3(normal, point);
|
---|
1205 | }
|
---|
1206 |
|
---|
1207 |
|
---|
1208 | AxisAlignedBox3 ViewCellsManager::GetViewSpaceBox() const
|
---|
1209 | {
|
---|
1210 | return mViewSpaceBox;
|
---|
1211 | }
|
---|
1212 |
|
---|
1213 |
|
---|
1214 | void ViewCellsManager::ResetViewCells()
|
---|
1215 | {
|
---|
1216 | mViewCells.clear();
|
---|
1217 |
|
---|
1218 | CollectViewCells();
|
---|
1219 |
|
---|
1220 | mCurrentViewCellsStats.Reset();
|
---|
1221 | EvaluateViewCellsStats();
|
---|
1222 |
|
---|
1223 | // has to be recomputed
|
---|
1224 | mTotalAreaValid = false;
|
---|
1225 | }
|
---|
1226 |
|
---|
1227 |
|
---|
1228 | int ViewCellsManager::GetMaxPvsSize() const
|
---|
1229 | {
|
---|
1230 | return mMaxPvsSize;
|
---|
1231 | }
|
---|
1232 |
|
---|
1233 |
|
---|
1234 | void
|
---|
1235 | ViewCellsManager::AddSampleContributions(const VssRayContainer &rays)
|
---|
1236 | {
|
---|
1237 | if (!ViewCellsConstructed())
|
---|
1238 | return;
|
---|
1239 |
|
---|
1240 | VssRayContainer::const_iterator it, it_end = rays.end();
|
---|
1241 |
|
---|
1242 | for (it = rays.begin(); it != it_end; ++ it) {
|
---|
1243 | AddSampleContributions(*(*it));
|
---|
1244 | }
|
---|
1245 | }
|
---|
1246 |
|
---|
1247 |
|
---|
1248 | int ViewCellsManager::GetMinPvsSize() const
|
---|
1249 | {
|
---|
1250 | return mMinPvsSize;
|
---|
1251 | }
|
---|
1252 |
|
---|
1253 |
|
---|
1254 |
|
---|
1255 | float ViewCellsManager::GetMaxPvsRatio() const
|
---|
1256 | {
|
---|
1257 | return mMaxPvsRatio;
|
---|
1258 | }
|
---|
1259 |
|
---|
1260 |
|
---|
1261 | void
|
---|
1262 | ViewCellsManager::AddSampleContributions(VssRay &ray)
|
---|
1263 | {
|
---|
1264 | // assumes viewcells have been stored...
|
---|
1265 | ViewCellContainer *viewcells = &ray.mViewCells;
|
---|
1266 | ViewCellContainer::const_iterator it;
|
---|
1267 | for (it = viewcells->begin(); it != viewcells->end(); ++it) {
|
---|
1268 | ViewCell *viewcell = *it;
|
---|
1269 | if (viewcell->GetValid()) {
|
---|
1270 | // if ray not outside of view space
|
---|
1271 | viewcell->GetPvs().AddSample(ray.mTerminationObject, ray.mPdf);
|
---|
1272 | }
|
---|
1273 | }
|
---|
1274 | }
|
---|
1275 |
|
---|
1276 |
|
---|
1277 | float ViewCellsManager::ComputeSampleContributions(VssRay &ray,
|
---|
1278 | const bool addRays,
|
---|
1279 | const bool storeViewCells)
|
---|
1280 | {
|
---|
1281 | ViewCellContainer viewcells;
|
---|
1282 |
|
---|
1283 | ray.mPvsContribution = 0;
|
---|
1284 | ray.mRelativePvsContribution = 0.0f;
|
---|
1285 |
|
---|
1286 | static Ray hray;
|
---|
1287 | hray.Init(ray);
|
---|
1288 | //hray.mFlags |= Ray::CULL_BACKFACES;
|
---|
1289 | //Ray hray(ray);
|
---|
1290 |
|
---|
1291 | float tmin = 0, tmax = 1.0;
|
---|
1292 |
|
---|
1293 | if (!GetViewSpaceBox().GetRaySegment(hray, tmin, tmax) || (tmin > tmax))
|
---|
1294 | return 0;
|
---|
1295 |
|
---|
1296 | Vector3 origin = hray.Extrap(tmin);
|
---|
1297 | Vector3 termination = hray.Extrap(tmax);
|
---|
1298 |
|
---|
1299 | CastLineSegment(origin, termination, viewcells);
|
---|
1300 |
|
---|
1301 | // copy viewcells memory efficiently
|
---|
1302 | //const bool storeViewcells = !addRays;
|
---|
1303 |
|
---|
1304 | if (storeViewCells)
|
---|
1305 | {
|
---|
1306 | ray.mViewCells.reserve(viewcells.size());
|
---|
1307 | ray.mViewCells = viewcells;
|
---|
1308 | }
|
---|
1309 |
|
---|
1310 | ViewCellContainer::const_iterator it = viewcells.begin();
|
---|
1311 |
|
---|
1312 | for (; it != viewcells.end(); ++ it)
|
---|
1313 | {
|
---|
1314 | ViewCell *viewcell = *it;
|
---|
1315 |
|
---|
1316 | if (viewcell->GetValid())
|
---|
1317 | {
|
---|
1318 | // HACK
|
---|
1319 | #if TEST_EMPTY_VIEW_CELLS
|
---|
1320 | for (int i = 0; i < mEmptyViewCells.size(); ++i)
|
---|
1321 | {
|
---|
1322 | if (viewcell == mEmptyViewCells[i])
|
---|
1323 | {
|
---|
1324 | viewcell->mPiercingRays.push_back(new Ray(ray));
|
---|
1325 | Debug << "empty view cell ray found: " << ray.mOriginObject << ", " << ray.mTerminationObject << endl;
|
---|
1326 | }
|
---|
1327 | }
|
---|
1328 | #endif
|
---|
1329 | // if ray not outside of view space
|
---|
1330 | float contribution;
|
---|
1331 | if (ray.mTerminationObject &&
|
---|
1332 | viewcell->GetPvs().GetSampleContribution(ray.mTerminationObject,
|
---|
1333 | ray.mPdf,
|
---|
1334 | contribution))
|
---|
1335 | {
|
---|
1336 | ++ ray.mPvsContribution;
|
---|
1337 | ray.mRelativePvsContribution += contribution;
|
---|
1338 | }
|
---|
1339 | if (ray.mOriginObject &&
|
---|
1340 | viewcell->GetPvs().GetSampleContribution(ray.mOriginObject,
|
---|
1341 | ray.mPdf,
|
---|
1342 | contribution))
|
---|
1343 | {
|
---|
1344 | ++ ray.mPvsContribution;
|
---|
1345 | ray.mRelativePvsContribution += contribution;
|
---|
1346 | }
|
---|
1347 | }
|
---|
1348 | }
|
---|
1349 |
|
---|
1350 |
|
---|
1351 | if (addRays)
|
---|
1352 | {
|
---|
1353 | for (it = viewcells.begin(); it != viewcells.end(); ++ it)
|
---|
1354 | {
|
---|
1355 | ViewCell *viewcell = *it;
|
---|
1356 |
|
---|
1357 | if (viewcell->GetValid())
|
---|
1358 | {
|
---|
1359 | // if ray not outside of view space
|
---|
1360 | if (ray.mTerminationObject)
|
---|
1361 | viewcell->GetPvs().AddSample(ray.mTerminationObject, ray.mPdf);
|
---|
1362 | if (ray.mOriginObject)
|
---|
1363 | viewcell->GetPvs().AddSample(ray.mOriginObject, ray.mPdf);
|
---|
1364 | }
|
---|
1365 | }
|
---|
1366 | }
|
---|
1367 |
|
---|
1368 | return ray.mRelativePvsContribution;
|
---|
1369 | }
|
---|
1370 |
|
---|
1371 |
|
---|
1372 | void ViewCellsManager::GetRaySets(const VssRayContainer &sourceRays,
|
---|
1373 | const int maxSize,
|
---|
1374 | VssRayContainer &usedRays,
|
---|
1375 | VssRayContainer *savedRays) const
|
---|
1376 | {
|
---|
1377 | const int limit = min(maxSize, (int)sourceRays.size());
|
---|
1378 | const float prop = (float)limit / ((float)sourceRays.size() + Limits::Small);
|
---|
1379 |
|
---|
1380 | VssRayContainer::const_iterator it, it_end = sourceRays.end();
|
---|
1381 | for (it = sourceRays.begin(); it != it_end; ++ it)
|
---|
1382 | {
|
---|
1383 | if (Random(1.0f) < prop)
|
---|
1384 | usedRays.push_back(*it);
|
---|
1385 | else if (savedRays)
|
---|
1386 | savedRays->push_back(*it);
|
---|
1387 | }
|
---|
1388 | }
|
---|
1389 |
|
---|
1390 |
|
---|
1391 | float ViewCellsManager::GetRendercost(ViewCell *viewCell, float objRendercost) const
|
---|
1392 | {
|
---|
1393 | return mViewCellsTree->GetPvsSize(viewCell) * objRendercost;
|
---|
1394 | }
|
---|
1395 |
|
---|
1396 |
|
---|
1397 | float ViewCellsManager::GetAccVcArea()
|
---|
1398 | {
|
---|
1399 | // if already computed
|
---|
1400 | if (mTotalAreaValid)
|
---|
1401 | return mTotalArea;
|
---|
1402 |
|
---|
1403 | mTotalArea = 0;
|
---|
1404 | ViewCellContainer::const_iterator it, it_end = mViewCells.end();
|
---|
1405 |
|
---|
1406 | for (it = mViewCells.begin(); it != it_end; ++ it)
|
---|
1407 | {
|
---|
1408 | //Debug << "area: " << GetArea(*it);
|
---|
1409 | mTotalArea += GetArea(*it);
|
---|
1410 | }
|
---|
1411 |
|
---|
1412 | mTotalAreaValid = true;
|
---|
1413 |
|
---|
1414 | return mTotalArea;
|
---|
1415 | }
|
---|
1416 |
|
---|
1417 |
|
---|
1418 | void ViewCellsManager::PrintStatistics(ostream &s) const
|
---|
1419 | {
|
---|
1420 | s << mCurrentViewCellsStats << endl;
|
---|
1421 | }
|
---|
1422 |
|
---|
1423 |
|
---|
1424 | void ViewCellsManager::CreateUniqueViewCellIds()
|
---|
1425 | {
|
---|
1426 | if (ViewCellsTreeConstructed())
|
---|
1427 | mViewCellsTree->CreateUniqueViewCellsIds();
|
---|
1428 | else
|
---|
1429 | for (int i = 0; i < (int)mViewCells.size(); ++ i)
|
---|
1430 | mViewCells[i]->SetId(i);
|
---|
1431 | }
|
---|
1432 |
|
---|
1433 |
|
---|
1434 | void ViewCellsManager::ExportViewCellsForViz(Exporter *exporter) const
|
---|
1435 | {
|
---|
1436 | ViewCellContainer::const_iterator it, it_end = mViewCells.end();
|
---|
1437 |
|
---|
1438 | for (it = mViewCells.begin(); it != it_end; ++ it)
|
---|
1439 | {
|
---|
1440 | if (!mOnlyValidViewCells || (*it)->GetValid())
|
---|
1441 | {
|
---|
1442 | ExportColor(exporter, *it);
|
---|
1443 | ExportViewCellGeometry(exporter, *it,
|
---|
1444 | mUseClipPlaneForViz ? &mClipPlane : NULL);
|
---|
1445 | }
|
---|
1446 | }
|
---|
1447 | }
|
---|
1448 |
|
---|
1449 |
|
---|
1450 | void ViewCellsManager::CreateViewCellMeshes()
|
---|
1451 | {
|
---|
1452 | // convert to meshes
|
---|
1453 | ViewCellContainer::const_iterator it, it_end = mViewCells.end();
|
---|
1454 |
|
---|
1455 | for (it = mViewCells.begin(); it != it_end; ++ it)
|
---|
1456 | {
|
---|
1457 | if (!(*it)->GetMesh())
|
---|
1458 | CreateMesh(*it);
|
---|
1459 | }
|
---|
1460 | }
|
---|
1461 |
|
---|
1462 |
|
---|
1463 | bool ViewCellsManager::ExportViewCells(const string filename)
|
---|
1464 | {
|
---|
1465 | return false;
|
---|
1466 | }
|
---|
1467 |
|
---|
1468 |
|
---|
1469 | void ViewCellsManager::CollectViewCells(const int n)
|
---|
1470 | {
|
---|
1471 | mNumActiveViewCells = n;
|
---|
1472 | mViewCells.clear();
|
---|
1473 | CollectViewCells();
|
---|
1474 | }
|
---|
1475 |
|
---|
1476 |
|
---|
1477 | void ViewCellsManager::SetViewCellsActive()
|
---|
1478 | {
|
---|
1479 | ++ ViewCell::sLastUpdated;
|
---|
1480 | ViewCellContainer::const_iterator it, it_end = mViewCells.end();
|
---|
1481 | for (it = mViewCells.begin(); it != it_end; ++ it)
|
---|
1482 | {
|
---|
1483 | (*it)->SetActive();
|
---|
1484 | }
|
---|
1485 | }
|
---|
1486 |
|
---|
1487 | /**********************************************************************/
|
---|
1488 | /* BspViewCellsManager implementation */
|
---|
1489 | /**********************************************************************/
|
---|
1490 |
|
---|
1491 |
|
---|
1492 | BspViewCellsManager::BspViewCellsManager(BspTree *bspTree):
|
---|
1493 | ViewCellsManager(), mBspTree(bspTree)
|
---|
1494 | {
|
---|
1495 | environment->GetIntValue("BspTree.Construction.samples", mInitialSamples);
|
---|
1496 | mBspTree->SetViewCellsManager(this);
|
---|
1497 | mBspTree->mViewCellsTree = mViewCellsTree;
|
---|
1498 | }
|
---|
1499 |
|
---|
1500 |
|
---|
1501 | bool BspViewCellsManager::ViewCellsConstructed() const
|
---|
1502 | {
|
---|
1503 | return mBspTree->GetRoot() != NULL;
|
---|
1504 | }
|
---|
1505 |
|
---|
1506 |
|
---|
1507 | ViewCell *BspViewCellsManager::GenerateViewCell(Mesh *mesh) const
|
---|
1508 | {
|
---|
1509 | return new BspViewCell(mesh);
|
---|
1510 | }
|
---|
1511 |
|
---|
1512 |
|
---|
1513 | int BspViewCellsManager::ConstructSubdivision(const ObjectContainer &objects,
|
---|
1514 | const VssRayContainer &rays)
|
---|
1515 | {
|
---|
1516 | // if view cells were already constructed
|
---|
1517 | if (ViewCellsConstructed())
|
---|
1518 | return 0;
|
---|
1519 |
|
---|
1520 | int sampleContributions = 0;
|
---|
1521 |
|
---|
1522 | // construct view cells using the collected samples
|
---|
1523 | RayContainer constructionRays;
|
---|
1524 | VssRayContainer savedRays;
|
---|
1525 |
|
---|
1526 | const int limit = min(mInitialSamples, (int)rays.size());
|
---|
1527 |
|
---|
1528 | VssRayContainer::const_iterator it, it_end = rays.end();
|
---|
1529 |
|
---|
1530 | const float prop = (float)limit / ((float)rays.size() + Limits::Small);
|
---|
1531 |
|
---|
1532 | for (it = rays.begin(); it != it_end; ++ it)
|
---|
1533 | {
|
---|
1534 | if (Random(1.0f) < prop)
|
---|
1535 | constructionRays.push_back(new Ray(*(*it)));
|
---|
1536 | else
|
---|
1537 | savedRays.push_back(*it);
|
---|
1538 | }
|
---|
1539 |
|
---|
1540 | if (mViewCells.empty())
|
---|
1541 | {
|
---|
1542 | // no view cells loaded
|
---|
1543 | mBspTree->Construct(objects, constructionRays, &mViewSpaceBox);
|
---|
1544 | // collect final view cells
|
---|
1545 | mBspTree->CollectViewCells(mViewCells);
|
---|
1546 | }
|
---|
1547 | else
|
---|
1548 | {
|
---|
1549 | mBspTree->Construct(mViewCells);
|
---|
1550 | }
|
---|
1551 |
|
---|
1552 | // destroy rays created only for construction
|
---|
1553 | CLEAR_CONTAINER(constructionRays);
|
---|
1554 |
|
---|
1555 | Debug << mBspTree->GetStatistics() << endl;
|
---|
1556 |
|
---|
1557 | //EvaluateViewCellsStats();
|
---|
1558 | Debug << "\nView cells after construction:\n" << mCurrentViewCellsStats << endl;
|
---|
1559 |
|
---|
1560 | // recast rest of the rays
|
---|
1561 | if (SAMPLE_AFTER_SUBDIVISION)
|
---|
1562 | ComputeSampleContributions(savedRays, true, false);
|
---|
1563 |
|
---|
1564 | return sampleContributions;
|
---|
1565 | }
|
---|
1566 |
|
---|
1567 |
|
---|
1568 | void BspViewCellsManager::CollectViewCells()
|
---|
1569 | {
|
---|
1570 | // view cells tree constructed
|
---|
1571 | if (!ViewCellsTreeConstructed())
|
---|
1572 | {
|
---|
1573 | mBspTree->CollectViewCells(mViewCells);
|
---|
1574 | }
|
---|
1575 | else
|
---|
1576 | {
|
---|
1577 | // we can use the view cells tree hierarchy to get the right set
|
---|
1578 | mViewCellsTree->CollectBestViewCellSet(mViewCells,
|
---|
1579 | mNumActiveViewCells);
|
---|
1580 | }
|
---|
1581 | }
|
---|
1582 |
|
---|
1583 |
|
---|
1584 | float BspViewCellsManager::GetProbability(ViewCell *viewCell)
|
---|
1585 | {
|
---|
1586 | // compute view cell area as subsititute for probability
|
---|
1587 | if (1)
|
---|
1588 | return GetVolume(viewCell) / GetViewSpaceBox().GetVolume();
|
---|
1589 | else
|
---|
1590 | return GetArea(viewCell) / GetAccVcArea();
|
---|
1591 | }
|
---|
1592 |
|
---|
1593 |
|
---|
1594 |
|
---|
1595 | int BspViewCellsManager::CastLineSegment(const Vector3 &origin,
|
---|
1596 | const Vector3 &termination,
|
---|
1597 | ViewCellContainer &viewcells)
|
---|
1598 | {
|
---|
1599 | return mBspTree->CastLineSegment(origin, termination, viewcells);
|
---|
1600 | }
|
---|
1601 |
|
---|
1602 |
|
---|
1603 | int BspViewCellsManager::PostProcess(const ObjectContainer &objects,
|
---|
1604 | const VssRayContainer &rays)
|
---|
1605 | {
|
---|
1606 | if (!ViewCellsConstructed())
|
---|
1607 | {
|
---|
1608 | Debug << "view cells not constructed" << endl;
|
---|
1609 | return 0;
|
---|
1610 | }
|
---|
1611 |
|
---|
1612 | // view cells already finished before post processing step (i.e. because they were loaded)
|
---|
1613 | if (mViewCellsFinished)
|
---|
1614 | {
|
---|
1615 | FinalizeViewCells(true);
|
---|
1616 | EvaluateViewCellsStats();
|
---|
1617 |
|
---|
1618 | return 0;
|
---|
1619 | }
|
---|
1620 |
|
---|
1621 | //-- post processing of bsp view cells
|
---|
1622 |
|
---|
1623 | int vcSize = 0;
|
---|
1624 | int pvsSize = 0;
|
---|
1625 |
|
---|
1626 | //-- merge view cells
|
---|
1627 | cout << "starting post processing using " << mPostProcessSamples << " samples ... ";
|
---|
1628 | long startTime = GetTime();
|
---|
1629 |
|
---|
1630 | VssRayContainer postProcessRays;
|
---|
1631 | GetRaySets(rays, mPostProcessSamples, postProcessRays);
|
---|
1632 |
|
---|
1633 | if (mMergeViewCells)
|
---|
1634 | {
|
---|
1635 | cout << "constructing visibility based merge tree" << endl;
|
---|
1636 | mViewCellsTree->ConstructMergeTree(rays, objects);
|
---|
1637 | }
|
---|
1638 | else
|
---|
1639 | {
|
---|
1640 | cout << "constructing spatial merge tree" << endl;
|
---|
1641 | // create spatial merge hierarchy
|
---|
1642 | mViewCellsTree->SetRoot(ConstructSpatialMergeTree(mBspTree->GetRoot()));
|
---|
1643 | }
|
---|
1644 |
|
---|
1645 | // export statistics after merge
|
---|
1646 | if (1)
|
---|
1647 | {
|
---|
1648 | char mstats[100];
|
---|
1649 | environment->GetStringValue("ViewCells.mergeStats", mstats);
|
---|
1650 | mViewCellsTree->ExportStats(mstats);
|
---|
1651 | }
|
---|
1652 |
|
---|
1653 | //-- stats and visualizations
|
---|
1654 | cout << "finished" << endl;
|
---|
1655 | cout << "merged view cells in "
|
---|
1656 | << TimeDiff(startTime, GetTime()) *1e-3 << " secs" << endl;
|
---|
1657 |
|
---|
1658 | Debug << "Postprocessing: Merged view cells in "
|
---|
1659 | << TimeDiff(startTime, GetTime()) *1e-3 << " secs" << endl << endl;
|
---|
1660 |
|
---|
1661 |
|
---|
1662 | //-- visualization and statistics
|
---|
1663 | // reset view cells and stats
|
---|
1664 | ResetViewCells();
|
---|
1665 | Debug << "\nView cells after merge:\n" << mCurrentViewCellsStats << endl;
|
---|
1666 |
|
---|
1667 |
|
---|
1668 | int savedColorCode = mColorCode;
|
---|
1669 |
|
---|
1670 | //BspLeaf::NewMail();
|
---|
1671 | if (1) // export merged view cells
|
---|
1672 | {
|
---|
1673 | mColorCode = 0;
|
---|
1674 |
|
---|
1675 | Exporter *exporter = Exporter::GetExporter("merged_view_cells.x3d");
|
---|
1676 |
|
---|
1677 |
|
---|
1678 | cout << "exporting view cells after merge ... ";
|
---|
1679 |
|
---|
1680 | if (exporter)
|
---|
1681 | {
|
---|
1682 | if (mExportGeometry)
|
---|
1683 | exporter->ExportGeometry(objects);
|
---|
1684 |
|
---|
1685 | //exporter->SetWireframe();
|
---|
1686 | exporter->SetFilled();
|
---|
1687 | ExportViewCellsForViz(exporter);
|
---|
1688 |
|
---|
1689 |
|
---|
1690 | delete exporter;
|
---|
1691 | }
|
---|
1692 | cout << "finished" << endl;
|
---|
1693 | }
|
---|
1694 |
|
---|
1695 | if (1) // export merged view cells
|
---|
1696 | {
|
---|
1697 | mColorCode = 1;
|
---|
1698 |
|
---|
1699 | Exporter *exporter = Exporter::GetExporter("merged_view_cells_pvs.x3d");
|
---|
1700 |
|
---|
1701 | cout << "exporting view cells after merge (pvs size) ... ";
|
---|
1702 |
|
---|
1703 | if (exporter)
|
---|
1704 | {
|
---|
1705 | //exporter->SetWireframe();
|
---|
1706 |
|
---|
1707 | if (mExportGeometry)
|
---|
1708 | exporter->ExportGeometry(objects);
|
---|
1709 |
|
---|
1710 | //exporter->SetWireframe();
|
---|
1711 | exporter->SetFilled();
|
---|
1712 | ExportViewCellsForViz(exporter);
|
---|
1713 |
|
---|
1714 | delete exporter;
|
---|
1715 | }
|
---|
1716 | cout << "finished" << endl;
|
---|
1717 | }
|
---|
1718 |
|
---|
1719 |
|
---|
1720 | // only for testing
|
---|
1721 | TestSubdivision();
|
---|
1722 |
|
---|
1723 | mColorCode = savedColorCode;
|
---|
1724 |
|
---|
1725 | FinalizeViewCells(true);
|
---|
1726 |
|
---|
1727 | // write view cells to disc
|
---|
1728 | if (mExportViewCells)
|
---|
1729 | {
|
---|
1730 | char buff[100];
|
---|
1731 | environment->GetStringValue("ViewCells.filename", buff);
|
---|
1732 | string vcFilename(buff);
|
---|
1733 |
|
---|
1734 | ExportViewCells(buff);
|
---|
1735 | }
|
---|
1736 |
|
---|
1737 | return 0;
|
---|
1738 | }
|
---|
1739 |
|
---|
1740 |
|
---|
1741 | BspViewCellsManager::~BspViewCellsManager()
|
---|
1742 | {
|
---|
1743 | }
|
---|
1744 |
|
---|
1745 |
|
---|
1746 | int BspViewCellsManager::GetType() const
|
---|
1747 | {
|
---|
1748 | return BSP;
|
---|
1749 | }
|
---|
1750 |
|
---|
1751 |
|
---|
1752 | void BspViewCellsManager::Visualize(const ObjectContainer &objects,
|
---|
1753 | const VssRayContainer &sampleRays)
|
---|
1754 | {
|
---|
1755 | if (!ViewCellsConstructed())
|
---|
1756 | return;
|
---|
1757 |
|
---|
1758 | int savedColorCode = mColorCode;
|
---|
1759 |
|
---|
1760 |
|
---|
1761 |
|
---|
1762 | if (1) // export final view cells
|
---|
1763 | {
|
---|
1764 | mColorCode = 1;
|
---|
1765 |
|
---|
1766 | Exporter *exporter = Exporter::GetExporter("final_view_cells.wrl");
|
---|
1767 |
|
---|
1768 | cout << "exporting view cells after merge (pvs size) ... ";
|
---|
1769 |
|
---|
1770 | if (exporter)
|
---|
1771 | {
|
---|
1772 | //exporter->SetWireframe();
|
---|
1773 |
|
---|
1774 | if (mExportGeometry)
|
---|
1775 | exporter->ExportGeometry(objects);
|
---|
1776 |
|
---|
1777 | //exporter->SetWireframe();
|
---|
1778 | exporter->SetFilled();
|
---|
1779 | ExportViewCellsForViz(exporter);
|
---|
1780 |
|
---|
1781 | delete exporter;
|
---|
1782 | }
|
---|
1783 | cout << "finished" << endl;
|
---|
1784 | }
|
---|
1785 |
|
---|
1786 | mColorCode = savedColorCode;
|
---|
1787 |
|
---|
1788 | //-- visualization of the BSP splits
|
---|
1789 | bool exportSplits = false;
|
---|
1790 | environment->GetBoolValue("BspTree.Visualization.exportSplits", exportSplits);
|
---|
1791 |
|
---|
1792 | if (exportSplits)
|
---|
1793 | {
|
---|
1794 | cout << "exporting splits ... ";
|
---|
1795 | ExportSplits(objects);
|
---|
1796 | cout << "finished" << endl;
|
---|
1797 | }
|
---|
1798 |
|
---|
1799 | // export single view cells
|
---|
1800 | ExportBspPvs(objects);
|
---|
1801 | }
|
---|
1802 |
|
---|
1803 |
|
---|
1804 | inline bool vc_gt(ViewCell *a, ViewCell *b)
|
---|
1805 | {
|
---|
1806 | return a->GetPvs().GetSize() > b->GetPvs().GetSize();
|
---|
1807 | }
|
---|
1808 |
|
---|
1809 |
|
---|
1810 | void BspViewCellsManager::ExportSplits(const ObjectContainer &objects)
|
---|
1811 | {
|
---|
1812 | Exporter *exporter = Exporter::GetExporter("bsp_splits.x3d");
|
---|
1813 |
|
---|
1814 | if (exporter)
|
---|
1815 | {
|
---|
1816 | //exporter->SetFilled();
|
---|
1817 |
|
---|
1818 | if (mExportGeometry)
|
---|
1819 | exporter->ExportGeometry(objects);
|
---|
1820 |
|
---|
1821 | Material m;
|
---|
1822 | m.mDiffuseColor = RgbColor(1, 0, 0);
|
---|
1823 | exporter->SetForcedMaterial(m);
|
---|
1824 | exporter->SetWireframe();
|
---|
1825 |
|
---|
1826 | exporter->ExportBspSplits(*mBspTree, true);
|
---|
1827 |
|
---|
1828 | //NOTE: take forced material, else big scenes cannot be viewed
|
---|
1829 | m.mDiffuseColor = RgbColor(0, 1, 0);
|
---|
1830 | exporter->SetForcedMaterial(m);
|
---|
1831 | //exporter->ResetForcedMaterial();
|
---|
1832 |
|
---|
1833 | delete exporter;
|
---|
1834 | }
|
---|
1835 | }
|
---|
1836 |
|
---|
1837 |
|
---|
1838 | void BspViewCellsManager::ExportBspPvs(const ObjectContainer &objects)
|
---|
1839 | {
|
---|
1840 | const int leafOut = 10;
|
---|
1841 |
|
---|
1842 | ViewCell::NewMail();
|
---|
1843 |
|
---|
1844 | //-- some rays for output
|
---|
1845 | const int raysOut = min((int)mBspRays.size(), mVisualizationSamples);
|
---|
1846 |
|
---|
1847 | cout << "visualization using " << mVisualizationSamples << " samples" << endl;
|
---|
1848 | Debug << "\nOutput view cells: " << endl;
|
---|
1849 |
|
---|
1850 | // sort view cells to get largest view cells
|
---|
1851 | if (0)
|
---|
1852 | stable_sort(mViewCells.begin(), mViewCells.end(), vc_gt);
|
---|
1853 |
|
---|
1854 | int limit = min(leafOut, (int)mViewCells.size());
|
---|
1855 |
|
---|
1856 | for (int i = 0; i < limit; ++ i)
|
---|
1857 | {
|
---|
1858 | cout << "creating output for view cell " << i << " ... ";
|
---|
1859 | VssRayContainer vcRays;
|
---|
1860 | Intersectable::NewMail();
|
---|
1861 | ViewCell *vc;
|
---|
1862 |
|
---|
1863 | if (0)
|
---|
1864 | vc = mViewCells[i];
|
---|
1865 | else
|
---|
1866 | vc = mViewCells[Random((int)mViewCells.size())];
|
---|
1867 |
|
---|
1868 | cout << "creating output for view cell " << i << " ... ";
|
---|
1869 |
|
---|
1870 | if(0)
|
---|
1871 | {
|
---|
1872 | // check whether we can add the current ray to the output rays
|
---|
1873 | for (int k = 0; k < raysOut; ++ k)
|
---|
1874 | {
|
---|
1875 | BspRay *ray = mBspRays[k];
|
---|
1876 | for (int j = 0; j < (int)ray->intersections.size(); ++ j)
|
---|
1877 | {
|
---|
1878 | BspLeaf *leaf = ray->intersections[j].mLeaf;
|
---|
1879 | if (vc == leaf->GetViewCell())
|
---|
1880 | vcRays.push_back(ray->vssRay);
|
---|
1881 | }
|
---|
1882 | }
|
---|
1883 | }
|
---|
1884 |
|
---|
1885 | //bspLeaves[j]->Mail();
|
---|
1886 | char s[64]; sprintf(s, "bsp-pvs%04d.x3d", i);
|
---|
1887 |
|
---|
1888 | Exporter *exporter = Exporter::GetExporter(s);
|
---|
1889 |
|
---|
1890 | exporter->SetWireframe();
|
---|
1891 |
|
---|
1892 | Material m;//= RandomMaterial();
|
---|
1893 | m.mDiffuseColor = RgbColor(0, 1, 0);
|
---|
1894 | exporter->SetForcedMaterial(m);
|
---|
1895 |
|
---|
1896 | ExportViewCellGeometry(exporter, vc);
|
---|
1897 |
|
---|
1898 | // export rays piercing this view cell
|
---|
1899 | exporter->ExportRays(vcRays, RgbColor(0, 1, 0));
|
---|
1900 |
|
---|
1901 | m.mDiffuseColor = RgbColor(1, 0, 0);
|
---|
1902 | exporter->SetForcedMaterial(m);
|
---|
1903 |
|
---|
1904 | ObjectPvsMap::const_iterator it,
|
---|
1905 | it_end = vc->GetPvs().mEntries.end();
|
---|
1906 |
|
---|
1907 | exporter->SetFilled();
|
---|
1908 |
|
---|
1909 | // output PVS of view cell
|
---|
1910 | for (it = vc->GetPvs().mEntries.begin(); it != it_end; ++ it)
|
---|
1911 | {
|
---|
1912 | Intersectable *intersect = (*it).first;
|
---|
1913 |
|
---|
1914 | if (!intersect->Mailed())
|
---|
1915 | {
|
---|
1916 | Material m = RandomMaterial();
|
---|
1917 | exporter->SetForcedMaterial(m);
|
---|
1918 |
|
---|
1919 | exporter->ExportIntersectable(intersect);
|
---|
1920 | intersect->Mail();
|
---|
1921 | }
|
---|
1922 | }
|
---|
1923 |
|
---|
1924 | DEL_PTR(exporter);
|
---|
1925 | cout << "finished" << endl;
|
---|
1926 | }
|
---|
1927 |
|
---|
1928 | Debug << endl;
|
---|
1929 | }
|
---|
1930 |
|
---|
1931 |
|
---|
1932 | void BspViewCellsManager::ExportColor(Exporter *exporter,
|
---|
1933 | ViewCell *vc) const
|
---|
1934 | {
|
---|
1935 | const bool vcValid = CheckValidity(vc, mMinPvsSize, mMaxPvsSize);
|
---|
1936 |
|
---|
1937 | float importance = 0;
|
---|
1938 | static Material m;
|
---|
1939 |
|
---|
1940 | switch (mColorCode)
|
---|
1941 | {
|
---|
1942 | case 0: // Random
|
---|
1943 | {
|
---|
1944 | if (vcValid)
|
---|
1945 | {
|
---|
1946 | m.mDiffuseColor.r = 0.5f + RandomValue(0.0f, 0.5f);
|
---|
1947 | m.mDiffuseColor.g = 0.5f + RandomValue(0.0f, 0.5f);
|
---|
1948 | m.mDiffuseColor.b = 0.5f + RandomValue(0.0f, 0.5f);
|
---|
1949 | }
|
---|
1950 | else
|
---|
1951 | {
|
---|
1952 | m.mDiffuseColor.r = 0.0f;
|
---|
1953 | m.mDiffuseColor.g = 1.0f;
|
---|
1954 | m.mDiffuseColor.b = 0.0f;
|
---|
1955 | }
|
---|
1956 |
|
---|
1957 | exporter->SetForcedMaterial(m);
|
---|
1958 | return;
|
---|
1959 | }
|
---|
1960 |
|
---|
1961 | case 1: // pvs
|
---|
1962 | {
|
---|
1963 | importance = (float)vc->GetPvs().GetSize() /
|
---|
1964 | (float)mCurrentViewCellsStats.maxPvs;
|
---|
1965 |
|
---|
1966 | }
|
---|
1967 | break;
|
---|
1968 | case 2: // merges
|
---|
1969 | {
|
---|
1970 | int lSize = mViewCellsTree->GetSize(vc);
|
---|
1971 | importance = (float)lSize / (float)mCurrentViewCellsStats.maxLeaves;
|
---|
1972 | }
|
---|
1973 | //break;
|
---|
1974 | case 3: // merge tree differene
|
---|
1975 | {
|
---|
1976 | // TODO
|
---|
1977 | //importance = (float)GetMaxTreeDiff(vc) /
|
---|
1978 | // (float)(mVspBspTree->GetStatistics().maxDepth * 2);
|
---|
1979 |
|
---|
1980 | }
|
---|
1981 | break;
|
---|
1982 | default:
|
---|
1983 | break;
|
---|
1984 | }
|
---|
1985 |
|
---|
1986 | // special color code for invalid view cells
|
---|
1987 | m.mDiffuseColor.r = importance;
|
---|
1988 | m.mDiffuseColor.g = 1.0f - m.mDiffuseColor.r;
|
---|
1989 | m.mDiffuseColor.b = vcValid ? 1.0f : 0.0f;
|
---|
1990 |
|
---|
1991 | //Debug << "importance: " << importance << endl;
|
---|
1992 | exporter->SetForcedMaterial(m);
|
---|
1993 | }
|
---|
1994 |
|
---|
1995 |
|
---|
1996 | void BspViewCellsManager::TestSubdivision()
|
---|
1997 | {
|
---|
1998 | ViewCellContainer leaves;
|
---|
1999 | mViewCellsTree->CollectLeaves(mViewCellsTree->GetRoot(), leaves);
|
---|
2000 |
|
---|
2001 | ViewCellContainer::const_iterator it, it_end = leaves.end();
|
---|
2002 |
|
---|
2003 | const float vol = mViewSpaceBox.GetVolume();
|
---|
2004 | float subdivVol = 0;
|
---|
2005 | float newVol = 0;
|
---|
2006 |
|
---|
2007 | for (it = leaves.begin(); it != it_end; ++ it)
|
---|
2008 | {
|
---|
2009 | BspNodeGeometry geom;
|
---|
2010 | BspLeaf *leaf = dynamic_cast<BspViewCell *>(*it)->mLeaf;
|
---|
2011 | mBspTree->ConstructGeometry(leaf, geom);
|
---|
2012 |
|
---|
2013 | const float lVol = geom.GetVolume();
|
---|
2014 |
|
---|
2015 | newVol += lVol;
|
---|
2016 | subdivVol += (*it)->GetVolume();
|
---|
2017 |
|
---|
2018 | float thres = 0.9f;
|
---|
2019 | if ((lVol < ((*it)->GetVolume() * thres)) ||
|
---|
2020 | (lVol * thres > ((*it)->GetVolume())))
|
---|
2021 | Debug << "warning: " << lVol << " " << (*it)->GetVolume() << endl;
|
---|
2022 | }
|
---|
2023 |
|
---|
2024 | Debug << "exact volume: " << vol << endl;
|
---|
2025 | Debug << "subdivision volume: " << subdivVol << endl;
|
---|
2026 | Debug << "new volume: " << newVol << endl;
|
---|
2027 | }
|
---|
2028 |
|
---|
2029 |
|
---|
2030 | void BspViewCellsManager::ExportViewCellGeometry(Exporter *exporter,
|
---|
2031 | ViewCell *vc,
|
---|
2032 | const Plane3 *clipPlane) const
|
---|
2033 | {
|
---|
2034 | if (vc->GetMesh())
|
---|
2035 | {
|
---|
2036 | exporter->ExportMesh(vc->GetMesh());
|
---|
2037 | return;
|
---|
2038 | }
|
---|
2039 |
|
---|
2040 | BspNodeGeometry geom;
|
---|
2041 | mBspTree->ConstructGeometry(vc, geom);
|
---|
2042 |
|
---|
2043 | if (clipPlane)
|
---|
2044 | {
|
---|
2045 | const int cf = Polygon3::ClassifyPlane(geom.GetPolys(), *clipPlane, 0.0001f);
|
---|
2046 |
|
---|
2047 | if (cf == Polygon3::BACK_SIDE)
|
---|
2048 | {
|
---|
2049 | exporter->ExportPolygons(geom.GetPolys());
|
---|
2050 | }
|
---|
2051 | else if (cf == Polygon3::SPLIT)
|
---|
2052 | {
|
---|
2053 | BspNodeGeometry front;
|
---|
2054 | BspNodeGeometry back;
|
---|
2055 |
|
---|
2056 | geom.SplitGeometry(front,
|
---|
2057 | back,
|
---|
2058 | *clipPlane,
|
---|
2059 | mViewSpaceBox,
|
---|
2060 | 0.0001f);
|
---|
2061 |
|
---|
2062 | if (back.Valid())
|
---|
2063 | exporter->ExportPolygons(back.GetPolys());
|
---|
2064 | }
|
---|
2065 | }
|
---|
2066 | else
|
---|
2067 | {
|
---|
2068 | exporter->ExportPolygons(geom.GetPolys());
|
---|
2069 | }
|
---|
2070 | }
|
---|
2071 |
|
---|
2072 |
|
---|
2073 | void BspViewCellsManager::CreateMesh(ViewCell *vc)
|
---|
2074 | {
|
---|
2075 | if (vc->GetMesh())
|
---|
2076 | delete vc->GetMesh();
|
---|
2077 |
|
---|
2078 | BspNodeGeometry geom;
|
---|
2079 |
|
---|
2080 | mBspTree->ConstructGeometry(vc, geom);
|
---|
2081 |
|
---|
2082 | Mesh *mesh = new Mesh();
|
---|
2083 | geom.AddToMesh(*mesh);
|
---|
2084 | vc->SetMesh(mesh);
|
---|
2085 | mMeshContainer.push_back(mesh);
|
---|
2086 | }
|
---|
2087 |
|
---|
2088 |
|
---|
2089 | void BspViewCellsManager::Finalize(ViewCell *viewCell,
|
---|
2090 | const bool createMesh)
|
---|
2091 | {
|
---|
2092 | float area = 0;
|
---|
2093 | float volume = 0;
|
---|
2094 |
|
---|
2095 | ViewCellContainer leaves;
|
---|
2096 | mViewCellsTree->CollectLeaves(viewCell, leaves);
|
---|
2097 |
|
---|
2098 | ViewCellContainer::const_iterator it, it_end = leaves.end();
|
---|
2099 |
|
---|
2100 | for (it = leaves.begin(); it != it_end; ++ it)
|
---|
2101 | {
|
---|
2102 | BspNodeGeometry geom;
|
---|
2103 | BspLeaf *leaf = dynamic_cast<BspViewCell *>(*it)->mLeaf;
|
---|
2104 | mBspTree->ConstructGeometry(leaf, geom);
|
---|
2105 |
|
---|
2106 | float lVol = geom.GetVolume();
|
---|
2107 | float lArea = geom.GetArea();
|
---|
2108 |
|
---|
2109 | //(*it)->SetVolume(vol);
|
---|
2110 | //(*it)->SetArea(area);
|
---|
2111 |
|
---|
2112 | area += lArea;
|
---|
2113 | volume += lVol;
|
---|
2114 |
|
---|
2115 | CreateMesh(*it);
|
---|
2116 | }
|
---|
2117 |
|
---|
2118 | viewCell->SetVolume(volume);
|
---|
2119 | viewCell->SetArea(area);
|
---|
2120 | }
|
---|
2121 |
|
---|
2122 |
|
---|
2123 | ViewCell *BspViewCellsManager::GetViewCell(const Vector3 &point) const
|
---|
2124 | {
|
---|
2125 | if (!mBspTree)
|
---|
2126 | return NULL;
|
---|
2127 |
|
---|
2128 | if (!mViewSpaceBox.IsInside(point))
|
---|
2129 | return NULL;
|
---|
2130 |
|
---|
2131 | return mBspTree->GetViewCell(point);
|
---|
2132 | }
|
---|
2133 |
|
---|
2134 |
|
---|
2135 | void BspViewCellsManager::CollectMergeCandidates(const VssRayContainer &rays,
|
---|
2136 | vector<MergeCandidate> &candidates)
|
---|
2137 | {
|
---|
2138 | cout << "collecting merge candidates ... " << endl;
|
---|
2139 |
|
---|
2140 | if (mUseRaysForMerge)
|
---|
2141 | {
|
---|
2142 | mBspTree->CollectMergeCandidates(rays, candidates);
|
---|
2143 | }
|
---|
2144 | else
|
---|
2145 | {
|
---|
2146 | vector<BspLeaf *> leaves;
|
---|
2147 | mBspTree->CollectLeaves(leaves);
|
---|
2148 | mBspTree->CollectMergeCandidates(leaves, candidates);
|
---|
2149 | }
|
---|
2150 |
|
---|
2151 | cout << "fininshed collecting candidates" << endl;
|
---|
2152 | }
|
---|
2153 |
|
---|
2154 |
|
---|
2155 |
|
---|
2156 | bool BspViewCellsManager::ExportViewCells(const string filename)
|
---|
2157 | {
|
---|
2158 | cout << "exporting view cells to xml ... ";
|
---|
2159 | std::ofstream stream;
|
---|
2160 |
|
---|
2161 | // for output we need unique ids for each view cell
|
---|
2162 | CreateUniqueViewCellIds();
|
---|
2163 |
|
---|
2164 |
|
---|
2165 | stream.open(filename.c_str());
|
---|
2166 | stream << "<?xml version=\"1.0\" encoding=\"UTF-8\"?>"<<endl;
|
---|
2167 | stream << "<Visibility_Solution>" << endl;
|
---|
2168 |
|
---|
2169 | //-- the view space bounding box
|
---|
2170 | stream << "<ViewSpaceBox"
|
---|
2171 | << " min=\"" << mViewSpaceBox.Min().x << " " << mViewSpaceBox.Min().y << " " << mViewSpaceBox.Min().z << "\""
|
---|
2172 | << " max=\"" << mViewSpaceBox.Max().x << " " << mViewSpaceBox.Max().y << " " << mViewSpaceBox.Max().z << "\" />" << endl;
|
---|
2173 |
|
---|
2174 | //-- the type of the view cells hierarchy
|
---|
2175 | //stream << "<Hierarchy name=\"bspTree\" />" << endl;
|
---|
2176 | stream << "<Hierarchy name=\"vspBspTree\" />" << endl; // write vsp bsp here because can use same tree and is bug free
|
---|
2177 | //-- load the view cells itself, i.e., the ids and the pvs
|
---|
2178 | stream << "<ViewCells>" << endl;
|
---|
2179 |
|
---|
2180 | #if 0
|
---|
2181 |
|
---|
2182 | ViewCellContainer::const_iterator it, it_end = mViewCells.end();
|
---|
2183 |
|
---|
2184 | for (it = mViewCells.begin(); it != it_end; ++ it)
|
---|
2185 | ExportViewCell(*it, stream);
|
---|
2186 | #else
|
---|
2187 | mViewCellsTree->Export(stream);
|
---|
2188 | #endif
|
---|
2189 |
|
---|
2190 | stream << "</ViewCells>" << endl;
|
---|
2191 |
|
---|
2192 | //-- load the hierarchy
|
---|
2193 | stream << "<Hierarchy>" << endl;
|
---|
2194 | mBspTree->Export(stream);
|
---|
2195 | stream << endl << "</Hierarchy>" << endl;
|
---|
2196 |
|
---|
2197 | stream << "</Visibility_Solution>" << endl;
|
---|
2198 | stream.close();
|
---|
2199 |
|
---|
2200 | cout << "finished" << endl;
|
---|
2201 |
|
---|
2202 | return true;
|
---|
2203 | }
|
---|
2204 |
|
---|
2205 |
|
---|
2206 | void BspViewCellsManager::AddCurrentViewCellsToHierarchy()
|
---|
2207 | {
|
---|
2208 | ViewCellContainer::const_iterator it, it_end = mViewCells.end();
|
---|
2209 | for (it = mViewCells.begin(); it != it_end; ++ it)
|
---|
2210 | {
|
---|
2211 | ViewCell *vc = *it;
|
---|
2212 | ViewCellContainer leaves;
|
---|
2213 | mViewCellsTree->CollectLeaves(vc, leaves);
|
---|
2214 |
|
---|
2215 | ViewCellContainer::const_iterator lit, lit_end = leaves.end();
|
---|
2216 |
|
---|
2217 | for (lit = leaves.begin(); lit != lit_end; ++ lit)
|
---|
2218 | {
|
---|
2219 | BspViewCell *bspVc = dynamic_cast<BspViewCell *>(*lit);
|
---|
2220 | bspVc->mLeaf->SetViewCell(vc);
|
---|
2221 | }
|
---|
2222 | }
|
---|
2223 | }
|
---|
2224 |
|
---|
2225 |
|
---|
2226 | ViewCell *BspViewCellsManager::ConstructSpatialMergeTree(BspNode *root)
|
---|
2227 | {
|
---|
2228 | if (root->IsLeaf())
|
---|
2229 | {
|
---|
2230 | ViewCell *viewCell = dynamic_cast<BspLeaf *>(root)->GetViewCell();
|
---|
2231 |
|
---|
2232 | viewCell->SetMergeCost(0.0f);
|
---|
2233 |
|
---|
2234 | return viewCell;
|
---|
2235 | }
|
---|
2236 |
|
---|
2237 | BspInterior *interior = dynamic_cast<BspInterior *>(root);
|
---|
2238 | ViewCellInterior *viewCellInterior = new ViewCellInterior();
|
---|
2239 |
|
---|
2240 | float mergeCost = 1.0f / (float)root->mTimeStamp;
|
---|
2241 | //Debug << "timestamp: " << root->mTimeStamp;
|
---|
2242 | //Debug << "merge cost: " << mergeCost << endl;
|
---|
2243 |
|
---|
2244 | viewCellInterior->SetMergeCost(mergeCost);
|
---|
2245 |
|
---|
2246 | float volume = 0;
|
---|
2247 |
|
---|
2248 | BspNode *front = interior->GetFront();
|
---|
2249 | BspNode *back = interior->GetBack();
|
---|
2250 |
|
---|
2251 | // recursivly compute child hierarchies
|
---|
2252 | ViewCell *backVc = ConstructSpatialMergeTree(back);
|
---|
2253 | ViewCell *frontVc = ConstructSpatialMergeTree(front);
|
---|
2254 |
|
---|
2255 | viewCellInterior->SetupChildLink(frontVc);
|
---|
2256 | viewCellInterior->SetupChildLink(backVc);
|
---|
2257 |
|
---|
2258 |
|
---|
2259 | viewCellInterior->GetPvs().Merge(backVc->GetPvs());
|
---|
2260 | viewCellInterior->GetPvs().Merge(frontVc->GetPvs());
|
---|
2261 |
|
---|
2262 | volume += backVc->GetVolume();
|
---|
2263 | volume += frontVc->GetVolume();
|
---|
2264 |
|
---|
2265 | viewCellInterior->SetVolume(volume);
|
---|
2266 |
|
---|
2267 | return viewCellInterior;
|
---|
2268 | }
|
---|
2269 |
|
---|
2270 |
|
---|
2271 | /************************************************************************/
|
---|
2272 | /* KdViewCellsManager implementation */
|
---|
2273 | /************************************************************************/
|
---|
2274 |
|
---|
2275 |
|
---|
2276 |
|
---|
2277 | KdViewCellsManager::KdViewCellsManager(KdTree *kdTree):
|
---|
2278 | ViewCellsManager(), mKdTree(kdTree), mKdPvsDepth(100)
|
---|
2279 | {
|
---|
2280 | }
|
---|
2281 |
|
---|
2282 |
|
---|
2283 | float KdViewCellsManager::GetProbability(ViewCell *viewCell)
|
---|
2284 | {
|
---|
2285 | // compute view cell area / volume as subsititute for probability
|
---|
2286 | if (0)
|
---|
2287 | return GetArea(viewCell) / GetViewSpaceBox().SurfaceArea();
|
---|
2288 | else
|
---|
2289 | return GetVolume(viewCell) / GetViewSpaceBox().GetVolume();
|
---|
2290 | }
|
---|
2291 |
|
---|
2292 |
|
---|
2293 |
|
---|
2294 |
|
---|
2295 | void KdViewCellsManager::CollectViewCells()
|
---|
2296 | {
|
---|
2297 | //mKdTree->CollectViewCells(mViewCells); TODO
|
---|
2298 | }
|
---|
2299 |
|
---|
2300 |
|
---|
2301 | int KdViewCellsManager::ConstructSubdivision(const ObjectContainer &objects,
|
---|
2302 | const VssRayContainer &rays)
|
---|
2303 | {
|
---|
2304 | // if view cells already constructed
|
---|
2305 | if (ViewCellsConstructed())
|
---|
2306 | return 0;
|
---|
2307 |
|
---|
2308 | mKdTree->Construct();
|
---|
2309 |
|
---|
2310 | mTotalAreaValid = false;
|
---|
2311 | // create the view cells
|
---|
2312 | mKdTree->CreateAndCollectViewCells(mViewCells);
|
---|
2313 |
|
---|
2314 | // cast rays
|
---|
2315 | ComputeSampleContributions(rays, true, false);
|
---|
2316 |
|
---|
2317 | EvaluateViewCellsStats();
|
---|
2318 | Debug << "\nView cells after construction:\n" << mCurrentViewCellsStats << endl;
|
---|
2319 |
|
---|
2320 | return 0;
|
---|
2321 | }
|
---|
2322 |
|
---|
2323 |
|
---|
2324 | bool KdViewCellsManager::ViewCellsConstructed() const
|
---|
2325 | {
|
---|
2326 | return mKdTree->GetRoot() != NULL;
|
---|
2327 | }
|
---|
2328 |
|
---|
2329 | int KdViewCellsManager::PostProcess(const ObjectContainer &objects,
|
---|
2330 | const VssRayContainer &rays)
|
---|
2331 | {
|
---|
2332 | return 0;
|
---|
2333 | }
|
---|
2334 |
|
---|
2335 | void KdViewCellsManager::Visualize(const ObjectContainer &objects,
|
---|
2336 | const VssRayContainer &sampleRays)
|
---|
2337 | {
|
---|
2338 | if (!ViewCellsConstructed())
|
---|
2339 | return;
|
---|
2340 |
|
---|
2341 | // using view cells instead of the kd PVS of objects
|
---|
2342 | const bool useViewCells = true;
|
---|
2343 | bool exportRays = false;
|
---|
2344 |
|
---|
2345 | int limit = min(mVisualizationSamples, (int)sampleRays.size());
|
---|
2346 | const int pvsOut = min((int)objects.size(), 10);
|
---|
2347 | VssRayContainer *rays = new VssRayContainer[pvsOut];
|
---|
2348 |
|
---|
2349 | if (useViewCells)
|
---|
2350 | {
|
---|
2351 | const int leafOut = 10;
|
---|
2352 |
|
---|
2353 | ViewCell::NewMail();
|
---|
2354 |
|
---|
2355 | //-- some rays for output
|
---|
2356 | const int raysOut = min((int)sampleRays.size(), mVisualizationSamples);
|
---|
2357 | Debug << "visualization using " << raysOut << " samples" << endl;
|
---|
2358 |
|
---|
2359 | //-- some random view cells and rays for output
|
---|
2360 | vector<KdLeaf *> kdLeaves;
|
---|
2361 |
|
---|
2362 | for (int i = 0; i < leafOut; ++ i)
|
---|
2363 | kdLeaves.push_back(dynamic_cast<KdLeaf *>(mKdTree->GetRandomLeaf()));
|
---|
2364 |
|
---|
2365 | for (int i = 0; i < kdLeaves.size(); ++ i)
|
---|
2366 | {
|
---|
2367 | KdLeaf *leaf = kdLeaves[i];
|
---|
2368 | RayContainer vcRays;
|
---|
2369 |
|
---|
2370 | cout << "creating output for view cell " << i << " ... ";
|
---|
2371 | #if 0
|
---|
2372 | // check whether we can add the current ray to the output rays
|
---|
2373 | for (int k = 0; k < raysOut; ++ k)
|
---|
2374 | {
|
---|
2375 | Ray *ray = sampleRays[k];
|
---|
2376 |
|
---|
2377 | for (int j = 0; j < (int)ray->bspIntersections.size(); ++ j)
|
---|
2378 | {
|
---|
2379 | BspLeaf *leaf2 = ray->bspIntersections[j].mLeaf;
|
---|
2380 |
|
---|
2381 | if (leaf->GetViewCell() == leaf2->GetViewCell())
|
---|
2382 | {
|
---|
2383 | vcRays.push_back(ray);
|
---|
2384 | }
|
---|
2385 | }
|
---|
2386 | }
|
---|
2387 | #endif
|
---|
2388 | Intersectable::NewMail();
|
---|
2389 |
|
---|
2390 | ViewCell *vc = leaf->mViewCell;
|
---|
2391 |
|
---|
2392 | //bspLeaves[j]->Mail();
|
---|
2393 | char s[64]; sprintf(s, "kd-pvs%04d.x3d", i);
|
---|
2394 |
|
---|
2395 | Exporter *exporter = Exporter::GetExporter(s);
|
---|
2396 | exporter->SetFilled();
|
---|
2397 |
|
---|
2398 | exporter->SetWireframe();
|
---|
2399 | //exporter->SetFilled();
|
---|
2400 |
|
---|
2401 | Material m;//= RandomMaterial();
|
---|
2402 | m.mDiffuseColor = RgbColor(1, 1, 0);
|
---|
2403 | exporter->SetForcedMaterial(m);
|
---|
2404 |
|
---|
2405 | AxisAlignedBox3 box = mKdTree->GetBox(leaf);
|
---|
2406 | exporter->ExportBox(box);
|
---|
2407 |
|
---|
2408 | // export rays piercing this view cell
|
---|
2409 | exporter->ExportRays(vcRays, 1000, RgbColor(0, 1, 0));
|
---|
2410 |
|
---|
2411 | m.mDiffuseColor = RgbColor(1, 0, 0);
|
---|
2412 | exporter->SetForcedMaterial(m);
|
---|
2413 |
|
---|
2414 | // exporter->SetWireframe();
|
---|
2415 | exporter->SetFilled();
|
---|
2416 |
|
---|
2417 | ObjectPvsMap::iterator it, it_end = vc->GetPvs().mEntries.end();
|
---|
2418 | // output PVS of view cell
|
---|
2419 | for (it = vc->GetPvs().mEntries.begin(); it != it_end; ++ it)
|
---|
2420 | {
|
---|
2421 | Intersectable *intersect = (*it).first;
|
---|
2422 | if (!intersect->Mailed())
|
---|
2423 | {
|
---|
2424 | exporter->ExportIntersectable(intersect);
|
---|
2425 | intersect->Mail();
|
---|
2426 | }
|
---|
2427 | }
|
---|
2428 |
|
---|
2429 | DEL_PTR(exporter);
|
---|
2430 | cout << "finished" << endl;
|
---|
2431 | }
|
---|
2432 |
|
---|
2433 | DEL_PTR(rays);
|
---|
2434 | }
|
---|
2435 | else // using kd PVS of objects
|
---|
2436 | {
|
---|
2437 | for (int i = 0; i < limit; ++ i)
|
---|
2438 | {
|
---|
2439 | VssRay *ray = sampleRays[i];
|
---|
2440 |
|
---|
2441 | // check whether we can add this to the rays
|
---|
2442 | for (int j = 0; j < pvsOut; j++)
|
---|
2443 | {
|
---|
2444 | if (objects[j] == ray->mTerminationObject)
|
---|
2445 | {
|
---|
2446 | rays[j].push_back(ray);
|
---|
2447 | }
|
---|
2448 | }
|
---|
2449 | }
|
---|
2450 |
|
---|
2451 | if (exportRays)
|
---|
2452 | {
|
---|
2453 | Exporter *exporter = NULL;
|
---|
2454 | exporter = Exporter::GetExporter("sample-rays.x3d");
|
---|
2455 | exporter->SetWireframe();
|
---|
2456 | exporter->ExportKdTree(*mKdTree);
|
---|
2457 |
|
---|
2458 | for (i=0; i < pvsOut; i++)
|
---|
2459 | exporter->ExportRays(rays[i], RgbColor(1, 0, 0));
|
---|
2460 |
|
---|
2461 | exporter->SetFilled();
|
---|
2462 |
|
---|
2463 | delete exporter;
|
---|
2464 | }
|
---|
2465 |
|
---|
2466 | for (int k=0; k < pvsOut; k++)
|
---|
2467 | {
|
---|
2468 | Intersectable *object = objects[k];
|
---|
2469 | char s[64];
|
---|
2470 | sprintf(s, "sample-pvs%04d.x3d", k);
|
---|
2471 |
|
---|
2472 | Exporter *exporter = Exporter::GetExporter(s);
|
---|
2473 | exporter->SetWireframe();
|
---|
2474 |
|
---|
2475 | KdPvsMap::iterator i = object->mKdPvs.mEntries.begin();
|
---|
2476 | Intersectable::NewMail();
|
---|
2477 |
|
---|
2478 | // avoid adding the object to the list
|
---|
2479 | object->Mail();
|
---|
2480 | ObjectContainer visibleObjects;
|
---|
2481 |
|
---|
2482 | for (; i != object->mKdPvs.mEntries.end(); i++)
|
---|
2483 | {
|
---|
2484 | KdNode *node = (*i).first;
|
---|
2485 | exporter->ExportBox(mKdTree->GetBox(node));
|
---|
2486 |
|
---|
2487 | mKdTree->CollectObjects(node, visibleObjects);
|
---|
2488 | }
|
---|
2489 |
|
---|
2490 | exporter->ExportRays(rays[k], RgbColor(0, 1, 0));
|
---|
2491 | exporter->SetFilled();
|
---|
2492 |
|
---|
2493 | for (int j = 0; j < visibleObjects.size(); j++)
|
---|
2494 | exporter->ExportIntersectable(visibleObjects[j]);
|
---|
2495 |
|
---|
2496 | Material m;
|
---|
2497 | m.mDiffuseColor = RgbColor(1, 0, 0);
|
---|
2498 | exporter->SetForcedMaterial(m);
|
---|
2499 | exporter->ExportIntersectable(object);
|
---|
2500 |
|
---|
2501 | delete exporter;
|
---|
2502 | }
|
---|
2503 | }
|
---|
2504 | }
|
---|
2505 |
|
---|
2506 |
|
---|
2507 | void KdViewCellsManager::ExportColor(Exporter *exporter,
|
---|
2508 | ViewCell *vc) const
|
---|
2509 | {
|
---|
2510 | // TODO
|
---|
2511 | }
|
---|
2512 |
|
---|
2513 |
|
---|
2514 | ViewCell *KdViewCellsManager::GenerateViewCell(Mesh *mesh) const
|
---|
2515 | {
|
---|
2516 | return new KdViewCell(mesh);
|
---|
2517 | }
|
---|
2518 |
|
---|
2519 |
|
---|
2520 | void KdViewCellsManager::ExportViewCellGeometry(Exporter *exporter,
|
---|
2521 | ViewCell *vc,
|
---|
2522 | const Plane3 *clipPlane) const
|
---|
2523 | {
|
---|
2524 | ViewCellContainer leaves;
|
---|
2525 |
|
---|
2526 | mViewCellsTree->CollectLeaves(vc, leaves);
|
---|
2527 | ViewCellContainer::const_iterator it, it_end = leaves.end();
|
---|
2528 |
|
---|
2529 | for (it = leaves.begin(); it != it_end; ++ it)
|
---|
2530 | {
|
---|
2531 | KdViewCell *kdVc = dynamic_cast<KdViewCell *>(*it);
|
---|
2532 |
|
---|
2533 | exporter->ExportBox(mKdTree->GetBox(kdVc->mLeaf));
|
---|
2534 | }
|
---|
2535 | }
|
---|
2536 |
|
---|
2537 |
|
---|
2538 | int KdViewCellsManager::GetType() const
|
---|
2539 | {
|
---|
2540 | return ViewCellsManager::KD;
|
---|
2541 | }
|
---|
2542 |
|
---|
2543 |
|
---|
2544 |
|
---|
2545 | KdNode *KdViewCellsManager::GetNodeForPvs(KdLeaf *leaf)
|
---|
2546 | {
|
---|
2547 | KdNode *node = leaf;
|
---|
2548 |
|
---|
2549 | while (node->mParent && node->mDepth > mKdPvsDepth)
|
---|
2550 | node = node->mParent;
|
---|
2551 | return node;
|
---|
2552 | }
|
---|
2553 |
|
---|
2554 | int KdViewCellsManager::CastLineSegment(const Vector3 &origin,
|
---|
2555 | const Vector3 &termination,
|
---|
2556 | ViewCellContainer &viewcells)
|
---|
2557 | {
|
---|
2558 | return mKdTree->CastLineSegment(origin, termination, viewcells);
|
---|
2559 | }
|
---|
2560 |
|
---|
2561 |
|
---|
2562 | void KdViewCellsManager::CreateMesh(ViewCell *vc)
|
---|
2563 | {
|
---|
2564 | // TODO
|
---|
2565 | }
|
---|
2566 |
|
---|
2567 |
|
---|
2568 |
|
---|
2569 | void KdViewCellsManager::CollectMergeCandidates(const VssRayContainer &rays,
|
---|
2570 | vector<MergeCandidate> &candidates)
|
---|
2571 | {
|
---|
2572 | // TODO
|
---|
2573 | }
|
---|
2574 |
|
---|
2575 |
|
---|
2576 | /**********************************************************************/
|
---|
2577 | /* VspKdViewCellsManager implementation */
|
---|
2578 | /**********************************************************************/
|
---|
2579 |
|
---|
2580 |
|
---|
2581 | VspKdViewCellsManager::VspKdViewCellsManager(VspKdTree *vspKdTree):
|
---|
2582 | ViewCellsManager(), mVspKdTree(vspKdTree)
|
---|
2583 | {
|
---|
2584 | environment->GetIntValue("VspKdTree.Construction.samples", mInitialSamples);
|
---|
2585 | mVspKdTree->SetViewCellsManager(this);
|
---|
2586 | }
|
---|
2587 |
|
---|
2588 | float VspKdViewCellsManager::GetProbability(ViewCell *viewCell)
|
---|
2589 | {
|
---|
2590 | // compute view cell area / volume as subsititute for probability
|
---|
2591 | if (0)
|
---|
2592 | return GetArea(viewCell) / GetViewSpaceBox().SurfaceArea();
|
---|
2593 | else
|
---|
2594 | return GetVolume(viewCell) / GetViewSpaceBox().GetVolume();
|
---|
2595 | }
|
---|
2596 |
|
---|
2597 |
|
---|
2598 |
|
---|
2599 |
|
---|
2600 | void VspKdViewCellsManager::CollectViewCells()
|
---|
2601 | {
|
---|
2602 | mVspKdTree->CollectViewCells(mViewCells);
|
---|
2603 | }
|
---|
2604 |
|
---|
2605 |
|
---|
2606 | int VspKdViewCellsManager::ConstructSubdivision(const ObjectContainer &objects,
|
---|
2607 | const VssRayContainer &rays)
|
---|
2608 | {
|
---|
2609 | // if view cells already constructed
|
---|
2610 | if (ViewCellsConstructed())
|
---|
2611 | return 0;
|
---|
2612 |
|
---|
2613 | VssRayContainer constructionRays;
|
---|
2614 | VssRayContainer savedRays;
|
---|
2615 |
|
---|
2616 | GetRaySets(rays,
|
---|
2617 | mInitialSamples,
|
---|
2618 | constructionRays,
|
---|
2619 | &savedRays);
|
---|
2620 |
|
---|
2621 | Debug << "constructing vsp kd tree using "
|
---|
2622 | << (int)constructionRays.size() << " samples" << endl;
|
---|
2623 |
|
---|
2624 | mVspKdTree->Construct(constructionRays, &mViewSpaceBox);
|
---|
2625 | Debug << mVspKdTree->GetStatistics() << endl;
|
---|
2626 |
|
---|
2627 | // export leaf building blocks
|
---|
2628 | ExportLeaves(objects, rays);
|
---|
2629 |
|
---|
2630 | // finally merge kd leaf building blocks to view cells
|
---|
2631 | const int merged = mVspKdTree->MergeViewCells(rays);
|
---|
2632 |
|
---|
2633 | // collapse siblings belonging to the same view cell
|
---|
2634 | mVspKdTree->RefineViewCells(rays);
|
---|
2635 |
|
---|
2636 | // collapse siblings belonging to the same view cell
|
---|
2637 | mVspKdTree->CollapseTree();
|
---|
2638 |
|
---|
2639 | // evaluale view cell stats
|
---|
2640 | ResetViewCells();
|
---|
2641 |
|
---|
2642 | Debug << "\nView cells after construction:\n" << mCurrentViewCellsStats << endl;
|
---|
2643 |
|
---|
2644 | long startTime = GetTime();
|
---|
2645 |
|
---|
2646 | // recast rest of rays
|
---|
2647 | ComputeSampleContributions(savedRays, true, false);
|
---|
2648 |
|
---|
2649 | Debug << "Computed remaining ray contribution in " << TimeDiff(startTime, GetTime()) * 1e-3
|
---|
2650 | << " secs" << endl;
|
---|
2651 |
|
---|
2652 | return merged;
|
---|
2653 | }
|
---|
2654 |
|
---|
2655 | bool VspKdViewCellsManager::ViewCellsConstructed() const
|
---|
2656 | {
|
---|
2657 | return mVspKdTree->GetRoot() != NULL;
|
---|
2658 | }
|
---|
2659 |
|
---|
2660 |
|
---|
2661 | ViewCell *VspKdViewCellsManager::GenerateViewCell(Mesh *mesh) const
|
---|
2662 | {
|
---|
2663 | return new VspKdViewCell(mesh);
|
---|
2664 | }
|
---|
2665 |
|
---|
2666 | int VspKdViewCellsManager::PostProcess(const ObjectContainer &objects,
|
---|
2667 | const VssRayContainer &rays)
|
---|
2668 | {
|
---|
2669 | if (!ViewCellsConstructed())
|
---|
2670 | return 0;
|
---|
2671 |
|
---|
2672 | // recalculate stats
|
---|
2673 | EvaluateViewCellsStats();
|
---|
2674 |
|
---|
2675 | return 0;
|
---|
2676 | }
|
---|
2677 |
|
---|
2678 |
|
---|
2679 | void VspKdViewCellsManager::ExportLeaves(const ObjectContainer &objects,
|
---|
2680 | const VssRayContainer &sampleRays)
|
---|
2681 | {
|
---|
2682 | if (!ViewCellsConstructed())
|
---|
2683 | return;
|
---|
2684 |
|
---|
2685 | //-- export leaf building blocks
|
---|
2686 | Exporter *exporter = Exporter::GetExporter("vspkdtree.x3d");
|
---|
2687 | if (!exporter)
|
---|
2688 | return;
|
---|
2689 |
|
---|
2690 | if (mExportGeometry)
|
---|
2691 | exporter->ExportGeometry(objects);
|
---|
2692 |
|
---|
2693 | //exporter->SetWireframe();
|
---|
2694 | //exporter->ExportVspKdTree(*mVspKdTree, mVspKdTree->GetStatistics().maxPvsSize);
|
---|
2695 | exporter->ExportVspKdTree(*mVspKdTree);
|
---|
2696 |
|
---|
2697 | if (mExportRays)
|
---|
2698 | {
|
---|
2699 | const float prob = (float)mVisualizationSamples
|
---|
2700 | / ((float)sampleRays.size() + Limits::Small);
|
---|
2701 |
|
---|
2702 | exporter->SetWireframe();
|
---|
2703 |
|
---|
2704 | //-- collect uniformly distributed rays
|
---|
2705 | VssRayContainer rays;
|
---|
2706 |
|
---|
2707 | for (int i = 0; i < sampleRays.size(); ++ i)
|
---|
2708 | {
|
---|
2709 | if (RandomValue(0,1) < prob)
|
---|
2710 | rays.push_back(sampleRays[i]);
|
---|
2711 | }
|
---|
2712 | exporter->ExportRays(rays, RgbColor(1, 0, 0));
|
---|
2713 | }
|
---|
2714 |
|
---|
2715 | delete exporter;
|
---|
2716 | }
|
---|
2717 |
|
---|
2718 | void VspKdViewCellsManager::Visualize(const ObjectContainer &objects,
|
---|
2719 | const VssRayContainer &sampleRays)
|
---|
2720 | {
|
---|
2721 | if (!ViewCellsConstructed())
|
---|
2722 | return;
|
---|
2723 |
|
---|
2724 | //-- export single view cells
|
---|
2725 | for (int i = 0; i < 10; ++ i)
|
---|
2726 | {
|
---|
2727 | char s[64];
|
---|
2728 | sprintf(s, "vsp_viewcell%04d.x3d", i);
|
---|
2729 | Exporter *exporter = Exporter::GetExporter(s);
|
---|
2730 | const int idx =
|
---|
2731 | (int)RandomValue(0.0, (Real)((int)mViewCells.size() - 1));
|
---|
2732 |
|
---|
2733 | VspKdViewCell *vc = dynamic_cast<VspKdViewCell *>(mViewCells[idx]);
|
---|
2734 |
|
---|
2735 | //-- export geometry
|
---|
2736 | Material m;
|
---|
2737 | m.mDiffuseColor = RgbColor(0, 1, 1);
|
---|
2738 |
|
---|
2739 | exporter->SetForcedMaterial(m);
|
---|
2740 | exporter->SetWireframe();
|
---|
2741 |
|
---|
2742 | ExportViewCellGeometry(exporter, vc);
|
---|
2743 |
|
---|
2744 | //-- export stored rays
|
---|
2745 |
|
---|
2746 | if (mExportRays)
|
---|
2747 | {
|
---|
2748 | ViewCellContainer leaves;
|
---|
2749 | mViewCellsTree->CollectLeaves(vc, leaves);
|
---|
2750 |
|
---|
2751 | ViewCellContainer::const_iterator it,
|
---|
2752 | it_end = leaves.end();
|
---|
2753 |
|
---|
2754 | for (it = leaves.begin(); it != it_end; ++ it)
|
---|
2755 | {
|
---|
2756 | VspKdViewCell *vspKdVc = dynamic_cast<VspKdViewCell *>(*it);
|
---|
2757 | VspKdLeaf *leaf = vspKdVc->mLeaf;
|
---|
2758 | AxisAlignedBox3 box = mVspKdTree->GetBBox(leaf);
|
---|
2759 |
|
---|
2760 | VssRayContainer vssRays;
|
---|
2761 |
|
---|
2762 | VssRayContainer castRays;
|
---|
2763 | VssRayContainer initRays;
|
---|
2764 |
|
---|
2765 | leaf->GetRays(vssRays);
|
---|
2766 |
|
---|
2767 | VssRayContainer::const_iterator it, it_end = vssRays.end();
|
---|
2768 | const float prop = 200.0f / (float)vssRays.size();
|
---|
2769 |
|
---|
2770 | for (it = vssRays.begin(); it != it_end; ++ it)
|
---|
2771 | {
|
---|
2772 | if (Random(1) < prop)
|
---|
2773 | if ((*it)->mTerminationObject == NULL)
|
---|
2774 | castRays.push_back(*it);
|
---|
2775 | else
|
---|
2776 | initRays.push_back(*it);
|
---|
2777 | }
|
---|
2778 |
|
---|
2779 | exporter->ExportRays(castRays, RgbColor(1, 0, 0));
|
---|
2780 | exporter->ExportRays(initRays, RgbColor(0, 1, 0));
|
---|
2781 | }
|
---|
2782 | }
|
---|
2783 |
|
---|
2784 | //-- output PVS of view cell
|
---|
2785 | m.mDiffuseColor = RgbColor(1, 0, 0);
|
---|
2786 | exporter->SetForcedMaterial(m);
|
---|
2787 |
|
---|
2788 | Intersectable::NewMail();
|
---|
2789 |
|
---|
2790 | ObjectPvsMap::const_iterator it,
|
---|
2791 | it_end = vc->GetPvs().mEntries.end();
|
---|
2792 |
|
---|
2793 | exporter->SetFilled();
|
---|
2794 |
|
---|
2795 | for (it = vc->GetPvs().mEntries.begin(); it != it_end; ++ it)
|
---|
2796 | {
|
---|
2797 | Intersectable *intersect = (*it).first;
|
---|
2798 |
|
---|
2799 | if (!intersect->Mailed())
|
---|
2800 | {
|
---|
2801 | Material m = RandomMaterial();
|
---|
2802 | exporter->SetForcedMaterial(m);
|
---|
2803 |
|
---|
2804 | exporter->ExportIntersectable(intersect);
|
---|
2805 | intersect->Mail();
|
---|
2806 | }
|
---|
2807 | }
|
---|
2808 |
|
---|
2809 | delete exporter;
|
---|
2810 | }
|
---|
2811 |
|
---|
2812 | //-- export final view cells
|
---|
2813 | Exporter *exporter = Exporter::GetExporter("vspkdtree_merged.x3d");
|
---|
2814 |
|
---|
2815 | //if (exportGeometry) exporter->SetWireframe();
|
---|
2816 | //else exporter->SetFilled();
|
---|
2817 |
|
---|
2818 | ExportViewCellsForViz(exporter);
|
---|
2819 |
|
---|
2820 | if (mExportGeometry)
|
---|
2821 | {
|
---|
2822 | exporter->SetFilled();
|
---|
2823 | exporter->ExportGeometry(objects);
|
---|
2824 | }
|
---|
2825 |
|
---|
2826 | if (mExportRays)
|
---|
2827 | {
|
---|
2828 | const float prob = (float)mVisualizationSamples
|
---|
2829 | / ((float)sampleRays.size() + Limits::Small);
|
---|
2830 |
|
---|
2831 | exporter->SetWireframe();
|
---|
2832 |
|
---|
2833 | VssRayContainer rays;
|
---|
2834 |
|
---|
2835 | for (int i = 0; i < sampleRays.size(); ++ i)
|
---|
2836 | {
|
---|
2837 | if (RandomValue(0,1) < prob)
|
---|
2838 | rays.push_back(sampleRays[i]);
|
---|
2839 | }
|
---|
2840 | exporter->ExportRays(rays, RgbColor(1, 0, 0));
|
---|
2841 | }
|
---|
2842 |
|
---|
2843 | delete exporter;
|
---|
2844 | }
|
---|
2845 |
|
---|
2846 | int VspKdViewCellsManager::GetType() const
|
---|
2847 | {
|
---|
2848 | return VSP_KD;
|
---|
2849 | }
|
---|
2850 |
|
---|
2851 |
|
---|
2852 | int VspKdViewCellsManager::CastLineSegment(const Vector3 &origin,
|
---|
2853 | const Vector3 &termination,
|
---|
2854 | ViewCellContainer &viewcells)
|
---|
2855 | {
|
---|
2856 | return mVspKdTree->CastLineSegment(origin, termination, viewcells);
|
---|
2857 | }
|
---|
2858 |
|
---|
2859 |
|
---|
2860 | void VspKdViewCellsManager::ExportColor(Exporter *exporter,
|
---|
2861 | ViewCell *vc) const
|
---|
2862 | {
|
---|
2863 | if (mColorCode == 0) // Random color
|
---|
2864 | return;
|
---|
2865 |
|
---|
2866 | float importance = 0;
|
---|
2867 |
|
---|
2868 | switch (mColorCode)
|
---|
2869 | {
|
---|
2870 | case 1: // pvs
|
---|
2871 | {
|
---|
2872 | importance = (float)vc->GetPvs().GetSize() /
|
---|
2873 | (float)mCurrentViewCellsStats.maxPvs;
|
---|
2874 | }
|
---|
2875 | break;
|
---|
2876 | case 2: // merged leaves
|
---|
2877 | {
|
---|
2878 | int lSize = mViewCellsTree->GetSize(vc);
|
---|
2879 | importance = (float)lSize /
|
---|
2880 | (float)mCurrentViewCellsStats.maxLeaves;
|
---|
2881 | }
|
---|
2882 | break;
|
---|
2883 | case 3: // merged tree depth difference
|
---|
2884 | {
|
---|
2885 | //importance = (float)GetMaxTreeDiff(vc) /
|
---|
2886 | // (float)(mVspBspTree->GetStatistics().maxDepth * 2);
|
---|
2887 | }
|
---|
2888 | break;
|
---|
2889 | default:
|
---|
2890 | break;
|
---|
2891 | }
|
---|
2892 |
|
---|
2893 | Material m;
|
---|
2894 | m.mDiffuseColor.b = 1.0f;
|
---|
2895 | m.mDiffuseColor.r = importance;
|
---|
2896 | m.mDiffuseColor.g = 1.0f - m.mDiffuseColor.r;
|
---|
2897 | //Debug << "importance: " << importance << endl;
|
---|
2898 | exporter->SetForcedMaterial(m);
|
---|
2899 | }
|
---|
2900 |
|
---|
2901 |
|
---|
2902 | void VspKdViewCellsManager::ExportViewCellGeometry(Exporter *exporter,
|
---|
2903 | ViewCell *vc,
|
---|
2904 | const Plane3 *clipPlane) const
|
---|
2905 | {
|
---|
2906 | VspKdViewCell *kdVc = dynamic_cast<VspKdViewCell *>(vc);
|
---|
2907 |
|
---|
2908 | Mesh m;
|
---|
2909 |
|
---|
2910 | ViewCellContainer leaves;
|
---|
2911 | mViewCellsTree->CollectLeaves(vc, leaves);
|
---|
2912 |
|
---|
2913 | ViewCellContainer::const_iterator it, it_end = leaves.end();
|
---|
2914 |
|
---|
2915 | for (it = leaves.begin(); it != it_end; ++ it)
|
---|
2916 | {
|
---|
2917 | VspKdLeaf *l = dynamic_cast<VspKdViewCell *>(*it)->mLeaf;
|
---|
2918 | mVspKdTree->GetBBox(l).AddBoxToMesh(&m);
|
---|
2919 | }
|
---|
2920 |
|
---|
2921 | exporter->ExportMesh(&m);
|
---|
2922 | }
|
---|
2923 |
|
---|
2924 |
|
---|
2925 | void VspKdViewCellsManager::CreateMesh(ViewCell *vc)
|
---|
2926 | {
|
---|
2927 | //TODO
|
---|
2928 | }
|
---|
2929 |
|
---|
2930 |
|
---|
2931 | void VspKdViewCellsManager::CollectMergeCandidates(const VssRayContainer &rays,
|
---|
2932 | vector<MergeCandidate> &candidates)
|
---|
2933 | {
|
---|
2934 | // TODO
|
---|
2935 | }
|
---|
2936 |
|
---|
2937 |
|
---|
2938 | /**************************************************************************/
|
---|
2939 | /* VspBspViewCellsManager implementation */
|
---|
2940 | /**************************************************************************/
|
---|
2941 |
|
---|
2942 |
|
---|
2943 | VspBspViewCellsManager::VspBspViewCellsManager(VspBspTree *vspBspTree):
|
---|
2944 | ViewCellsManager(), mVspBspTree(vspBspTree)
|
---|
2945 | {
|
---|
2946 | environment->GetIntValue("VspBspTree.Construction.samples", mInitialSamples);
|
---|
2947 | mVspBspTree->SetViewCellsManager(this);
|
---|
2948 | mVspBspTree->mViewCellsTree = mViewCellsTree;
|
---|
2949 | }
|
---|
2950 |
|
---|
2951 |
|
---|
2952 | VspBspViewCellsManager::~VspBspViewCellsManager()
|
---|
2953 | {
|
---|
2954 | }
|
---|
2955 |
|
---|
2956 |
|
---|
2957 | float VspBspViewCellsManager::GetProbability(ViewCell *viewCell)
|
---|
2958 | {
|
---|
2959 | if (0 && mVspBspTree->mUseAreaForPvs)
|
---|
2960 | return GetArea(viewCell) / GetAccVcArea();
|
---|
2961 | else
|
---|
2962 | return GetVolume(viewCell) / mViewSpaceBox.GetVolume();
|
---|
2963 | }
|
---|
2964 |
|
---|
2965 |
|
---|
2966 | void VspBspViewCellsManager::CollectViewCells()
|
---|
2967 | {
|
---|
2968 | // view cells tree constructed
|
---|
2969 | if (!ViewCellsTreeConstructed())
|
---|
2970 | {
|
---|
2971 | mVspBspTree->CollectViewCells(mViewCells, false);
|
---|
2972 | }
|
---|
2973 | else
|
---|
2974 | { // we can use the view cells tree hierarchy to get the right set
|
---|
2975 | mViewCellsTree->CollectBestViewCellSet(mViewCells, mNumActiveViewCells);
|
---|
2976 | }
|
---|
2977 | }
|
---|
2978 |
|
---|
2979 |
|
---|
2980 | bool VspBspViewCellsManager::ViewCellsConstructed() const
|
---|
2981 | {
|
---|
2982 | return mVspBspTree->GetRoot() != NULL;
|
---|
2983 | }
|
---|
2984 |
|
---|
2985 |
|
---|
2986 | ViewCell *VspBspViewCellsManager::GenerateViewCell(Mesh *mesh) const
|
---|
2987 | {
|
---|
2988 | return new BspViewCell(mesh);
|
---|
2989 | }
|
---|
2990 |
|
---|
2991 |
|
---|
2992 | int VspBspViewCellsManager::ConstructSubdivision(const ObjectContainer &objects,
|
---|
2993 | const VssRayContainer &rays)
|
---|
2994 | {
|
---|
2995 | mMaxPvsSize = (int)(mMaxPvsRatio * (float)objects.size());
|
---|
2996 |
|
---|
2997 | // if view cells were already constructed
|
---|
2998 | if (ViewCellsConstructed())
|
---|
2999 | return 0;
|
---|
3000 |
|
---|
3001 | int sampleContributions = 0;
|
---|
3002 |
|
---|
3003 | VssRayContainer sampleRays;
|
---|
3004 |
|
---|
3005 | int limit = min (mInitialSamples, (int)rays.size());
|
---|
3006 |
|
---|
3007 | VssRayContainer constructionRays;
|
---|
3008 | VssRayContainer savedRays;
|
---|
3009 |
|
---|
3010 | Debug << "samples used for vsp bsp subdivision: " << mInitialSamples
|
---|
3011 | << ", actual rays: " << (int)rays.size() << endl;
|
---|
3012 |
|
---|
3013 | GetRaySets(rays, mInitialSamples, constructionRays, &savedRays);
|
---|
3014 |
|
---|
3015 | Debug << "initial rays: " << (int)constructionRays.size() << endl;
|
---|
3016 | Debug << "saved rays: " << (int)savedRays.size() << endl;
|
---|
3017 |
|
---|
3018 |
|
---|
3019 | //TODO: remove
|
---|
3020 | if (1)
|
---|
3021 | mVspBspTree->Construct(constructionRays, &mViewSpaceBox);
|
---|
3022 | else
|
---|
3023 | mVspBspTree->Construct(rays, &mViewSpaceBox);
|
---|
3024 |
|
---|
3025 | // collapse invalid regions
|
---|
3026 | cout << "collapsing invalid tree regions ... ";
|
---|
3027 | long startTime = GetTime();
|
---|
3028 | int collapsedLeaves = mVspBspTree->CollapseTree();
|
---|
3029 | Debug << "collapsed in " << TimeDiff(startTime, GetTime()) * 1e-3
|
---|
3030 | << " seconds" << endl;
|
---|
3031 |
|
---|
3032 | cout << "finished" << endl;
|
---|
3033 |
|
---|
3034 | // -- stats
|
---|
3035 | Debug << mVspBspTree->GetStatistics() << endl;
|
---|
3036 |
|
---|
3037 | ResetViewCells();
|
---|
3038 | Debug << "\nView cells after construction:\n" << mCurrentViewCellsStats << endl;
|
---|
3039 |
|
---|
3040 |
|
---|
3041 | startTime = GetTime();
|
---|
3042 |
|
---|
3043 | cout << "Computing remaining ray contributions ... ";
|
---|
3044 |
|
---|
3045 | // recast rest of rays
|
---|
3046 | if (SAMPLE_AFTER_SUBDIVISION)
|
---|
3047 | ComputeSampleContributions(savedRays, true, false);
|
---|
3048 | cout << "finished" << endl;
|
---|
3049 |
|
---|
3050 | Debug << "Computed remaining ray contribution in " << TimeDiff(startTime, GetTime()) * 1e-3
|
---|
3051 | << " secs" << endl;
|
---|
3052 |
|
---|
3053 | cout << "construction finished" << endl;
|
---|
3054 |
|
---|
3055 | return sampleContributions;
|
---|
3056 | }
|
---|
3057 |
|
---|
3058 |
|
---|
3059 | void VspBspViewCellsManager::MergeViewCells(const VssRayContainer &rays,
|
---|
3060 | const ObjectContainer &objects)
|
---|
3061 | {
|
---|
3062 | int vcSize = 0;
|
---|
3063 | int pvsSize = 0;
|
---|
3064 |
|
---|
3065 | //-- merge view cells
|
---|
3066 | cout << "starting merge using " << mPostProcessSamples << " samples ... " << endl;
|
---|
3067 | long startTime = GetTime();
|
---|
3068 |
|
---|
3069 |
|
---|
3070 | if (mMergeViewCells)
|
---|
3071 | {
|
---|
3072 | // TODO: should be done BEFORE the ray casting
|
---|
3073 | // compute tree by merging the nodes based on cost heuristics
|
---|
3074 | mViewCellsTree->ConstructMergeTree(rays, objects);
|
---|
3075 | }
|
---|
3076 | else
|
---|
3077 | {
|
---|
3078 | // compute tree by merging the nodes of the spatial hierarchy
|
---|
3079 | ViewCell *root = ConstructSpatialMergeTree(mVspBspTree->GetRoot());
|
---|
3080 | mViewCellsTree->SetRoot(root);
|
---|
3081 | }
|
---|
3082 |
|
---|
3083 | if (1)
|
---|
3084 | {
|
---|
3085 | char mstats[100];
|
---|
3086 | environment->GetStringValue("ViewCells.mergeStats", mstats);
|
---|
3087 | mViewCellsTree->ExportStats(mstats);
|
---|
3088 | }
|
---|
3089 |
|
---|
3090 | //-- stats and visualizations
|
---|
3091 | cout << "finished merging" << endl;
|
---|
3092 | cout << "merged view cells in "
|
---|
3093 | << TimeDiff(startTime, GetTime()) *1e-3 << " secs" << endl;
|
---|
3094 |
|
---|
3095 | Debug << "Postprocessing: Merged view cells in "
|
---|
3096 | << TimeDiff(startTime, GetTime()) *1e-3 << " secs" << endl << endl;
|
---|
3097 |
|
---|
3098 |
|
---|
3099 | int savedColorCode = mColorCode;
|
---|
3100 |
|
---|
3101 | // get currently active view cell set
|
---|
3102 | ResetViewCells();
|
---|
3103 | Debug << "\nView cells after merge:\n" << mCurrentViewCellsStats << endl;
|
---|
3104 |
|
---|
3105 | //BspLeaf::NewMail();
|
---|
3106 | if (1) // export merged view cells
|
---|
3107 | {
|
---|
3108 | mColorCode = 0;
|
---|
3109 | Exporter *exporter = Exporter::GetExporter("merged_view_cells.x3d");
|
---|
3110 |
|
---|
3111 | cout << "exporting view cells after merge ... ";
|
---|
3112 |
|
---|
3113 | if (exporter)
|
---|
3114 | {
|
---|
3115 | if (0)
|
---|
3116 | exporter->SetWireframe();
|
---|
3117 | else
|
---|
3118 | exporter->SetFilled();
|
---|
3119 |
|
---|
3120 | ExportViewCellsForViz(exporter);
|
---|
3121 |
|
---|
3122 | if (mExportGeometry)
|
---|
3123 | {
|
---|
3124 | Material m;
|
---|
3125 | m.mDiffuseColor = RgbColor(0, 1, 0);
|
---|
3126 | exporter->SetForcedMaterial(m);
|
---|
3127 | exporter->SetFilled();
|
---|
3128 |
|
---|
3129 | exporter->ExportGeometry(objects);
|
---|
3130 | }
|
---|
3131 |
|
---|
3132 | delete exporter;
|
---|
3133 | }
|
---|
3134 | cout << "finished" << endl;
|
---|
3135 | }
|
---|
3136 |
|
---|
3137 | if (1) // export merged view cells using pvs coding
|
---|
3138 | {
|
---|
3139 | mColorCode = 1;
|
---|
3140 |
|
---|
3141 | Exporter *exporter = Exporter::GetExporter("merged_view_cells_pvs.x3d");
|
---|
3142 |
|
---|
3143 | cout << "exporting view cells after merge (pvs size) ... ";
|
---|
3144 |
|
---|
3145 | if (exporter)
|
---|
3146 | {
|
---|
3147 | if (0)
|
---|
3148 | exporter->SetWireframe();
|
---|
3149 | else
|
---|
3150 | exporter->SetFilled();
|
---|
3151 |
|
---|
3152 | ExportViewCellsForViz(exporter);
|
---|
3153 |
|
---|
3154 | if (mExportGeometry)
|
---|
3155 | {
|
---|
3156 | Material m;
|
---|
3157 | m.mDiffuseColor = RgbColor(0, 1, 0);
|
---|
3158 | exporter->SetForcedMaterial(m);
|
---|
3159 | exporter->SetFilled();
|
---|
3160 |
|
---|
3161 | exporter->ExportGeometry(objects);
|
---|
3162 | }
|
---|
3163 |
|
---|
3164 | delete exporter;
|
---|
3165 | }
|
---|
3166 | cout << "finished" << endl;
|
---|
3167 | }
|
---|
3168 |
|
---|
3169 | mColorCode = savedColorCode;
|
---|
3170 |
|
---|
3171 | }
|
---|
3172 |
|
---|
3173 |
|
---|
3174 | bool VspBspViewCellsManager::EqualToSpatialNode(ViewCell *viewCell) const
|
---|
3175 | {
|
---|
3176 | return GetSpatialNode(viewCell) != NULL;
|
---|
3177 | }
|
---|
3178 |
|
---|
3179 |
|
---|
3180 | BspNode *VspBspViewCellsManager::GetSpatialNode(ViewCell *viewCell) const
|
---|
3181 | {
|
---|
3182 | if (!viewCell->IsLeaf())
|
---|
3183 | {
|
---|
3184 | BspViewCell *bspVc = dynamic_cast<BspViewCell *>(viewCell);
|
---|
3185 |
|
---|
3186 | return bspVc->mLeaf;
|
---|
3187 | }
|
---|
3188 | else
|
---|
3189 | {
|
---|
3190 | ViewCellInterior *interior = dynamic_cast<ViewCellInterior *>(viewCell);
|
---|
3191 |
|
---|
3192 | // cannot be node of binary tree
|
---|
3193 | if (interior->mChildren.size() != 2)
|
---|
3194 | return NULL;
|
---|
3195 |
|
---|
3196 | ViewCell *left = interior->mChildren[0];
|
---|
3197 | ViewCell *right = interior->mChildren[1];
|
---|
3198 |
|
---|
3199 | BspNode *leftNode = GetSpatialNode(left);
|
---|
3200 | BspNode *rightNode = GetSpatialNode(right);
|
---|
3201 |
|
---|
3202 | if (leftNode && rightNode && leftNode->IsSibling(rightNode))
|
---|
3203 | {
|
---|
3204 | return leftNode->GetParent();
|
---|
3205 | }
|
---|
3206 | }
|
---|
3207 |
|
---|
3208 | return NULL;
|
---|
3209 | }
|
---|
3210 |
|
---|
3211 |
|
---|
3212 | void VspBspViewCellsManager::RefineViewCells(const VssRayContainer &rays,
|
---|
3213 | const ObjectContainer &objects)
|
---|
3214 | {
|
---|
3215 | Debug << "render time before refine:" << endl;
|
---|
3216 | mRenderer->RenderScene();
|
---|
3217 | SimulationStatistics ss;
|
---|
3218 | dynamic_cast<RenderSimulator *>(mRenderer)->GetStatistics(ss);
|
---|
3219 | Debug << ss << endl;
|
---|
3220 |
|
---|
3221 | cout << "Refining the merged view cells ... ";
|
---|
3222 | long startTime = GetTime();
|
---|
3223 |
|
---|
3224 | // refining the merged view cells
|
---|
3225 | const int refined = mViewCellsTree->RefineViewCells(rays, objects);
|
---|
3226 |
|
---|
3227 | //-- stats and visualizations
|
---|
3228 | cout << "finished" << endl;
|
---|
3229 | cout << "refined " << refined << " view cells in "
|
---|
3230 | << TimeDiff(startTime, GetTime()) *1e-3 << " secs" << endl;
|
---|
3231 |
|
---|
3232 | Debug << "Postprocessing: refined " << refined << " view cells in "
|
---|
3233 | << TimeDiff(startTime, GetTime()) *1e-3 << " secs" << endl << endl;
|
---|
3234 | }
|
---|
3235 |
|
---|
3236 |
|
---|
3237 | int VspBspViewCellsManager::PostProcess(const ObjectContainer &objects,
|
---|
3238 | const VssRayContainer &rays)
|
---|
3239 | {
|
---|
3240 | if (!ViewCellsConstructed())
|
---|
3241 | {
|
---|
3242 | Debug << "postprocess error: no view cells constructed" << endl;
|
---|
3243 | return 0;
|
---|
3244 | }
|
---|
3245 |
|
---|
3246 |
|
---|
3247 | // view cells already finished before post processing step
|
---|
3248 | // (i.e. because they were loaded)
|
---|
3249 | if (mViewCellsFinished)
|
---|
3250 | {
|
---|
3251 | FinalizeViewCells(true);
|
---|
3252 | EvaluateViewCellsStats();
|
---|
3253 |
|
---|
3254 | return 0;
|
---|
3255 | }
|
---|
3256 |
|
---|
3257 | // check if new view cells turned invalid
|
---|
3258 | int minPvs, maxPvs;
|
---|
3259 |
|
---|
3260 | if (0)
|
---|
3261 | {
|
---|
3262 | minPvs = mMinPvsSize;
|
---|
3263 | maxPvs = mMaxPvsSize;
|
---|
3264 | }
|
---|
3265 | else
|
---|
3266 | {
|
---|
3267 | minPvs = mPruneEmptyViewCells ? 1 : 0;
|
---|
3268 | maxPvs = mMaxPvsSize;
|
---|
3269 | }
|
---|
3270 | Debug << "setting validity, min: " << minPvs << " max: " << maxPvs << endl;
|
---|
3271 | cout << "setting validity, min: " << minPvs << " max: " << maxPvs << endl;
|
---|
3272 |
|
---|
3273 | SetValidity(minPvs, maxPvs);
|
---|
3274 |
|
---|
3275 | // update valid view space according to valid view cells
|
---|
3276 | if (0)
|
---|
3277 | mVspBspTree->ValidateTree();
|
---|
3278 |
|
---|
3279 | // has to be recomputed
|
---|
3280 | mTotalAreaValid = false;
|
---|
3281 | VssRayContainer postProcessRays;
|
---|
3282 | GetRaySets(rays, mPostProcessSamples, postProcessRays);
|
---|
3283 |
|
---|
3284 | Debug << "post processing using " << (int)postProcessRays.size() << " samples" << endl;
|
---|
3285 |
|
---|
3286 |
|
---|
3287 | // should maybe be done here to allow merge working with area or volume
|
---|
3288 | // and to correct the rendering statistics
|
---|
3289 | if (0)
|
---|
3290 | {
|
---|
3291 | FinalizeViewCells(false);
|
---|
3292 | }
|
---|
3293 |
|
---|
3294 |
|
---|
3295 | //-- merge the individual view cells
|
---|
3296 | MergeViewCells(postProcessRays, objects);
|
---|
3297 |
|
---|
3298 | // only for testing
|
---|
3299 | TestSubdivision();
|
---|
3300 |
|
---|
3301 | //-- refines the merged view cells
|
---|
3302 | if (0)
|
---|
3303 | RefineViewCells(postProcessRays, objects);
|
---|
3304 |
|
---|
3305 |
|
---|
3306 | //-- render simulation after merge + refine
|
---|
3307 |
|
---|
3308 | cout << "\nevaluating bsp view cells render time before compress ... ";
|
---|
3309 | dynamic_cast<RenderSimulator *>(mRenderer)->RenderScene();
|
---|
3310 | SimulationStatistics ss;
|
---|
3311 | dynamic_cast<RenderSimulator *>(mRenderer)->GetStatistics(ss);
|
---|
3312 |
|
---|
3313 |
|
---|
3314 | cout << " finished" << endl;
|
---|
3315 | cout << ss << endl;
|
---|
3316 | Debug << ss << endl;
|
---|
3317 |
|
---|
3318 |
|
---|
3319 | //-- compression
|
---|
3320 |
|
---|
3321 | if (ViewCellsTreeConstructed() && mCompressViewCells)
|
---|
3322 | {
|
---|
3323 | int pvsEntries = mViewCellsTree->GetNumPvsEntries(mViewCellsTree->GetRoot());
|
---|
3324 | Debug << "number of entries before compress: " << pvsEntries << endl;
|
---|
3325 |
|
---|
3326 | mViewCellsTree->CompressViewCellsPvs();
|
---|
3327 |
|
---|
3328 | pvsEntries = mViewCellsTree->GetNumPvsEntries(mViewCellsTree->GetRoot());
|
---|
3329 | Debug << "number of entries after compress: " << pvsEntries << endl;
|
---|
3330 | }
|
---|
3331 |
|
---|
3332 |
|
---|
3333 | // collapse sibling leaves that share the same view cell
|
---|
3334 | if (0)
|
---|
3335 | mVspBspTree->CollapseTree();
|
---|
3336 |
|
---|
3337 | // recompute view cell list and statistics
|
---|
3338 | ResetViewCells();
|
---|
3339 |
|
---|
3340 | // real meshes are only contructed only at this stage
|
---|
3341 | FinalizeViewCells(true);
|
---|
3342 |
|
---|
3343 | // write view cells to disc
|
---|
3344 | if (mExportViewCells)
|
---|
3345 | {
|
---|
3346 | char buff[100];
|
---|
3347 | environment->GetStringValue("ViewCells.filename", buff);
|
---|
3348 | string vcFilename(buff);
|
---|
3349 |
|
---|
3350 | ExportViewCells(buff);
|
---|
3351 | }
|
---|
3352 |
|
---|
3353 | return 0;
|
---|
3354 | }
|
---|
3355 |
|
---|
3356 |
|
---|
3357 | int VspBspViewCellsManager::GetType() const
|
---|
3358 | {
|
---|
3359 | return VSP_BSP;
|
---|
3360 | }
|
---|
3361 |
|
---|
3362 |
|
---|
3363 | ViewCell *VspBspViewCellsManager::ConstructSpatialMergeTree(BspNode *root)
|
---|
3364 | {
|
---|
3365 | if (root->IsLeaf())
|
---|
3366 | {
|
---|
3367 | ViewCell *viewCell = dynamic_cast<BspLeaf *>(root)->GetViewCell();
|
---|
3368 |
|
---|
3369 | viewCell->SetMergeCost(0.0f);
|
---|
3370 |
|
---|
3371 | return viewCell;
|
---|
3372 | }
|
---|
3373 |
|
---|
3374 | BspInterior *interior = dynamic_cast<BspInterior *>(root);
|
---|
3375 | ViewCellInterior *viewCellInterior = new ViewCellInterior();
|
---|
3376 |
|
---|
3377 | float mergeCost = 1.0f / (float)root->mTimeStamp;
|
---|
3378 | //Debug << "timestamp: " << root->mTimeStamp;
|
---|
3379 | //Debug << "merge cost: " << mergeCost << endl;
|
---|
3380 |
|
---|
3381 | viewCellInterior->SetMergeCost(mergeCost);
|
---|
3382 |
|
---|
3383 | float volume = 0;
|
---|
3384 |
|
---|
3385 | BspNode *front = interior->GetFront();
|
---|
3386 | BspNode *back = interior->GetBack();
|
---|
3387 |
|
---|
3388 | // recursivly compute child hierarchies
|
---|
3389 | ViewCell *backVc = ConstructSpatialMergeTree(back);
|
---|
3390 | ViewCell *frontVc = ConstructSpatialMergeTree(front);
|
---|
3391 |
|
---|
3392 | viewCellInterior->SetupChildLink(frontVc);
|
---|
3393 | viewCellInterior->SetupChildLink(backVc);
|
---|
3394 |
|
---|
3395 |
|
---|
3396 | viewCellInterior->GetPvs().Merge(backVc->GetPvs());
|
---|
3397 | viewCellInterior->GetPvs().Merge(frontVc->GetPvs());
|
---|
3398 |
|
---|
3399 | volume += backVc->GetVolume();
|
---|
3400 | volume += frontVc->GetVolume();
|
---|
3401 |
|
---|
3402 | viewCellInterior->SetVolume(volume);
|
---|
3403 |
|
---|
3404 | return viewCellInterior;
|
---|
3405 | }
|
---|
3406 |
|
---|
3407 |
|
---|
3408 | bool VspBspViewCellsManager::GetViewPoint(Vector3 &viewPoint) const
|
---|
3409 | {
|
---|
3410 | if (!ViewCellsConstructed())
|
---|
3411 | return ViewCellsManager::GetViewPoint(viewPoint);
|
---|
3412 |
|
---|
3413 | // TODO: set reasonable limit
|
---|
3414 | const int limit = 20;
|
---|
3415 |
|
---|
3416 | for (int i = 0; i < limit; ++ i)
|
---|
3417 | {
|
---|
3418 | viewPoint = mViewSpaceBox.GetRandomPoint();
|
---|
3419 | if (mVspBspTree->ViewPointValid(viewPoint))
|
---|
3420 | {
|
---|
3421 | return true;
|
---|
3422 | }
|
---|
3423 | }
|
---|
3424 | Debug << "failed to find valid view point, taking " << viewPoint << endl;
|
---|
3425 | return false;
|
---|
3426 | }
|
---|
3427 |
|
---|
3428 |
|
---|
3429 | bool VspBspViewCellsManager::ViewPointValid(const Vector3 &viewPoint) const
|
---|
3430 | {
|
---|
3431 | // $$JB -> implemented in viewcellsmanager (slower, but allows dynamic
|
---|
3432 | // validy update in preprocessor for all managers)
|
---|
3433 | return ViewCellsManager::ViewPointValid(viewPoint);
|
---|
3434 |
|
---|
3435 | // return mViewSpaceBox.IsInside(viewPoint) &&
|
---|
3436 | // mVspBspTree->ViewPointValid(viewPoint);
|
---|
3437 | }
|
---|
3438 |
|
---|
3439 |
|
---|
3440 | void VspBspViewCellsManager::Visualize(const ObjectContainer &objects,
|
---|
3441 | const VssRayContainer &sampleRays)
|
---|
3442 | {
|
---|
3443 | if (!ViewCellsConstructed())
|
---|
3444 | return;
|
---|
3445 |
|
---|
3446 | VssRayContainer visRays;
|
---|
3447 | GetRaySets(sampleRays, mVisualizationSamples, visRays);
|
---|
3448 |
|
---|
3449 |
|
---|
3450 | if (1) // export view cells
|
---|
3451 | { // hack pvs
|
---|
3452 | int savedColorCode = mColorCode;
|
---|
3453 | mColorCode = 0;
|
---|
3454 | Exporter *exporter = Exporter::GetExporter("final_view_cells.wrl");
|
---|
3455 |
|
---|
3456 | if (exporter)
|
---|
3457 | {
|
---|
3458 | cout << "exporting view cells after post process ... ";
|
---|
3459 |
|
---|
3460 | if (0)
|
---|
3461 | {
|
---|
3462 | exporter->SetWireframe();
|
---|
3463 | exporter->ExportBox(mViewSpaceBox);
|
---|
3464 | exporter->SetFilled();
|
---|
3465 | }
|
---|
3466 |
|
---|
3467 | if (mExportGeometry)
|
---|
3468 | {
|
---|
3469 | exporter->ExportGeometry(objects);
|
---|
3470 | }
|
---|
3471 |
|
---|
3472 | // export rays
|
---|
3473 | if (mExportRays)
|
---|
3474 | {
|
---|
3475 | exporter->ExportRays(visRays, RgbColor(0, 1, 0));
|
---|
3476 | }
|
---|
3477 |
|
---|
3478 | ExportViewCellsForViz(exporter);
|
---|
3479 | delete exporter;
|
---|
3480 | cout << "finished" << endl;
|
---|
3481 | }
|
---|
3482 |
|
---|
3483 | mColorCode = savedColorCode;
|
---|
3484 | }
|
---|
3485 |
|
---|
3486 | if (0)
|
---|
3487 | {
|
---|
3488 | cout << "exporting depth map ... ";
|
---|
3489 |
|
---|
3490 | Exporter *exporter = Exporter::GetExporter("depth_map.x3d");
|
---|
3491 | if (exporter)
|
---|
3492 | {
|
---|
3493 | if (1)
|
---|
3494 | {
|
---|
3495 | exporter->SetWireframe();
|
---|
3496 | exporter->ExportBox(mViewSpaceBox);
|
---|
3497 | exporter->SetFilled();
|
---|
3498 | }
|
---|
3499 |
|
---|
3500 | if (mExportGeometry)
|
---|
3501 | {
|
---|
3502 | exporter->ExportGeometry(objects);
|
---|
3503 | }
|
---|
3504 |
|
---|
3505 | const int maxDepth = mVspBspTree->mBspStats.maxDepth;
|
---|
3506 |
|
---|
3507 | ViewCellContainer::const_iterator vit, vit_end = mViewCells.end();
|
---|
3508 |
|
---|
3509 | for (vit = mViewCells.begin(); vit != mViewCells.end(); ++ vit)
|
---|
3510 | {
|
---|
3511 | ViewCell *vc = *vit;
|
---|
3512 |
|
---|
3513 | ViewCellContainer leaves;
|
---|
3514 | mViewCellsTree->CollectLeaves(vc, leaves);
|
---|
3515 |
|
---|
3516 | ViewCellContainer::const_iterator lit, lit_end = leaves.end();
|
---|
3517 |
|
---|
3518 | for (lit = leaves.begin(); lit != lit_end; ++ lit)
|
---|
3519 | {
|
---|
3520 | BspLeaf *leaf = dynamic_cast<BspViewCell *>(*lit)->mLeaf;
|
---|
3521 |
|
---|
3522 | Material m;
|
---|
3523 |
|
---|
3524 | float relDepth = (float)leaf->GetDepth() / (float)maxDepth;
|
---|
3525 | m.mDiffuseColor.r = relDepth;
|
---|
3526 | m.mDiffuseColor.g = 0.0f;
|
---|
3527 | m.mDiffuseColor.b = 1.0f - relDepth;
|
---|
3528 |
|
---|
3529 | exporter->SetForcedMaterial(m);
|
---|
3530 |
|
---|
3531 |
|
---|
3532 | BspNodeGeometry geom;
|
---|
3533 | mVspBspTree->ConstructGeometry(leaf, geom);
|
---|
3534 | exporter->ExportPolygons(geom.GetPolys());
|
---|
3535 | }
|
---|
3536 | }
|
---|
3537 |
|
---|
3538 | delete exporter;
|
---|
3539 | }
|
---|
3540 |
|
---|
3541 |
|
---|
3542 | cout << "finished" << endl;
|
---|
3543 | }
|
---|
3544 |
|
---|
3545 | //-- visualization of the BSP splits
|
---|
3546 | bool exportSplits = false;
|
---|
3547 | environment->GetBoolValue("VspBspTree.Visualization.exportSplits", exportSplits);
|
---|
3548 |
|
---|
3549 | if (exportSplits)
|
---|
3550 | {
|
---|
3551 | cout << "exporting splits ... ";
|
---|
3552 | ExportSplits(objects, visRays);
|
---|
3553 | cout << "finished" << endl;
|
---|
3554 | }
|
---|
3555 |
|
---|
3556 | //-- export single view cells
|
---|
3557 | ExportBspPvs(objects, visRays);
|
---|
3558 | }
|
---|
3559 |
|
---|
3560 |
|
---|
3561 | void VspBspViewCellsManager::ExportSplits(const ObjectContainer &objects,
|
---|
3562 | const VssRayContainer &rays)
|
---|
3563 | {
|
---|
3564 | Exporter *exporter = Exporter::GetExporter("bsp_splits.x3d");
|
---|
3565 |
|
---|
3566 | if (exporter)
|
---|
3567 | {
|
---|
3568 | Material m;
|
---|
3569 | m.mDiffuseColor = RgbColor(1, 0, 0);
|
---|
3570 | exporter->SetForcedMaterial(m);
|
---|
3571 | exporter->SetWireframe();
|
---|
3572 |
|
---|
3573 | exporter->ExportBspSplits(*mVspBspTree, true);
|
---|
3574 |
|
---|
3575 | // take forced material, else big scenes cannot be viewed
|
---|
3576 | m.mDiffuseColor = RgbColor(0, 1, 0);
|
---|
3577 | exporter->SetForcedMaterial(m);
|
---|
3578 | exporter->SetFilled();
|
---|
3579 |
|
---|
3580 | exporter->ResetForcedMaterial();
|
---|
3581 |
|
---|
3582 | // export rays
|
---|
3583 | if (mExportRays)
|
---|
3584 | exporter->ExportRays(rays, RgbColor(1, 1, 0));
|
---|
3585 |
|
---|
3586 | if (mExportGeometry)
|
---|
3587 | exporter->ExportGeometry(objects);
|
---|
3588 |
|
---|
3589 | delete exporter;
|
---|
3590 | }
|
---|
3591 | }
|
---|
3592 |
|
---|
3593 |
|
---|
3594 | void VspBspViewCellsManager::ExportBspPvs(const ObjectContainer &objects,
|
---|
3595 | const VssRayContainer &rays)
|
---|
3596 | {
|
---|
3597 | const int leafOut = 20;
|
---|
3598 |
|
---|
3599 | ViewCell::NewMail();
|
---|
3600 |
|
---|
3601 | cout << "visualization using " << (int)rays.size() << " samples" << endl;
|
---|
3602 | Debug << "visualization using " << (int)rays.size() << " samples" << endl;
|
---|
3603 | Debug << "\nOutput view cells: " << endl;
|
---|
3604 |
|
---|
3605 | const bool sortViewCells = true;
|
---|
3606 |
|
---|
3607 | // sort view cells to visualize the largest view cells
|
---|
3608 | if (sortViewCells)
|
---|
3609 | stable_sort(mViewCells.begin(), mViewCells.end(), vc_gt);
|
---|
3610 |
|
---|
3611 | int limit = min(leafOut, (int)mViewCells.size());
|
---|
3612 |
|
---|
3613 | int raysOut = 0;
|
---|
3614 |
|
---|
3615 | //-- some rays for output
|
---|
3616 | for (int i = 0; i < limit; ++ i)
|
---|
3617 | {
|
---|
3618 | cout << "creating output for view cell " << i << " ... ";
|
---|
3619 |
|
---|
3620 | ViewCell *vc;
|
---|
3621 |
|
---|
3622 | if (sortViewCells) // largest view cell pvs first
|
---|
3623 | vc = mViewCells[i];
|
---|
3624 | else
|
---|
3625 | vc = mViewCells[(int)RandomValue(0, (float)mViewCells.size() - 1)];
|
---|
3626 |
|
---|
3627 | //bspLeaves[j]->Mail();
|
---|
3628 | char s[64]; sprintf(s, "bsp-pvs%04d.x3d", i);
|
---|
3629 | Exporter *exporter = Exporter::GetExporter(s);
|
---|
3630 |
|
---|
3631 | Debug << i << ": pvs size=" << (int)mViewCellsTree->GetPvsSize(vc) << endl;
|
---|
3632 |
|
---|
3633 | if (1 || mExportRays)
|
---|
3634 | {
|
---|
3635 | // output rays stored with the view cells during subdivision
|
---|
3636 | if (0)
|
---|
3637 | {
|
---|
3638 | VssRayContainer vcRays;
|
---|
3639 | VssRayContainer collectRays;
|
---|
3640 |
|
---|
3641 | raysOut = min((int)rays.size(), 100);
|
---|
3642 |
|
---|
3643 | // collect intial view cells
|
---|
3644 | ViewCellContainer leaves;
|
---|
3645 | mViewCellsTree->CollectLeaves(vc, leaves);
|
---|
3646 |
|
---|
3647 | ViewCellContainer::const_iterator vit, vit_end = leaves.end();
|
---|
3648 |
|
---|
3649 | for (vit = leaves.begin(); vit != vit_end; ++ vit)
|
---|
3650 | {
|
---|
3651 | BspLeaf *vcLeaf = dynamic_cast<BspViewCell *>(*vit)->mLeaf;
|
---|
3652 |
|
---|
3653 | VssRayContainer::const_iterator rit, rit_end = vcLeaf->mVssRays.end();
|
---|
3654 |
|
---|
3655 | for (rit = vcLeaf->mVssRays.begin(); rit != rit_end; ++ rit)
|
---|
3656 | {
|
---|
3657 | collectRays.push_back(*rit);
|
---|
3658 | }
|
---|
3659 | }
|
---|
3660 |
|
---|
3661 | VssRayContainer::const_iterator rit, rit_end = collectRays.end();
|
---|
3662 |
|
---|
3663 | for (rit = collectRays.begin(); rit != rit_end; ++ rit)
|
---|
3664 | {
|
---|
3665 | float p = RandomValue(0.0f, (float)collectRays.size());
|
---|
3666 |
|
---|
3667 | if (p < raysOut)
|
---|
3668 | vcRays.push_back(*rit);
|
---|
3669 | }
|
---|
3670 | //-- export rays piercing this view cell
|
---|
3671 | exporter->ExportRays(vcRays, RgbColor(1, 1, 1));
|
---|
3672 | }
|
---|
3673 |
|
---|
3674 | // associate new rays with output view cell
|
---|
3675 | if (1)
|
---|
3676 | {
|
---|
3677 | VssRayContainer vcRays;
|
---|
3678 | raysOut = min((int)rays.size(), mVisualizationSamples);
|
---|
3679 | // check whether we can add the current ray to the output rays
|
---|
3680 | for (int k = 0; k < raysOut; ++ k)
|
---|
3681 | {
|
---|
3682 | VssRay *ray = rays[k];
|
---|
3683 | for (int j = 0; j < (int)ray->mViewCells.size(); ++ j)
|
---|
3684 | {
|
---|
3685 | ViewCell *rayvc = ray->mViewCells[j];
|
---|
3686 |
|
---|
3687 | if (rayvc == vc)
|
---|
3688 | vcRays.push_back(ray);
|
---|
3689 | }
|
---|
3690 | }
|
---|
3691 |
|
---|
3692 | //-- export rays piercing this view cell
|
---|
3693 | exporter->ExportRays(vcRays, RgbColor(1, 1, 0));
|
---|
3694 | }
|
---|
3695 |
|
---|
3696 | }
|
---|
3697 |
|
---|
3698 |
|
---|
3699 | exporter->SetWireframe();
|
---|
3700 |
|
---|
3701 | Material m;//= RandomMaterial();
|
---|
3702 | m.mDiffuseColor = RgbColor(0, 1, 0);
|
---|
3703 | exporter->SetForcedMaterial(m);
|
---|
3704 |
|
---|
3705 | ExportViewCellGeometry(exporter, vc);
|
---|
3706 |
|
---|
3707 | exporter->SetFilled();
|
---|
3708 |
|
---|
3709 |
|
---|
3710 | if (1)
|
---|
3711 | {
|
---|
3712 | ObjectPvsMap::const_iterator oit,
|
---|
3713 | oit_end = vc->GetPvs().mEntries.end();
|
---|
3714 |
|
---|
3715 |
|
---|
3716 | exporter->SetFilled();
|
---|
3717 |
|
---|
3718 | Intersectable::NewMail();
|
---|
3719 |
|
---|
3720 | // output PVS of view cell
|
---|
3721 | for (oit = vc->GetPvs().mEntries.begin(); oit != oit_end; ++ oit)
|
---|
3722 | {
|
---|
3723 | Intersectable *intersect = (*oit).first;
|
---|
3724 |
|
---|
3725 | if (!intersect->Mailed())
|
---|
3726 | {
|
---|
3727 | m = RandomMaterial();
|
---|
3728 | exporter->SetForcedMaterial(m);
|
---|
3729 |
|
---|
3730 | exporter->ExportIntersectable(intersect);
|
---|
3731 | intersect->Mail();
|
---|
3732 | }
|
---|
3733 | }
|
---|
3734 | }
|
---|
3735 | else
|
---|
3736 | {
|
---|
3737 | m.mDiffuseColor = RgbColor(1, 0, 0);
|
---|
3738 | exporter->SetForcedMaterial(m);
|
---|
3739 |
|
---|
3740 | exporter->ExportGeometry(objects);
|
---|
3741 | }
|
---|
3742 |
|
---|
3743 | DEL_PTR(exporter);
|
---|
3744 | cout << "finished" << endl;
|
---|
3745 | }
|
---|
3746 |
|
---|
3747 | Debug << endl;
|
---|
3748 | }
|
---|
3749 |
|
---|
3750 |
|
---|
3751 | int VspBspViewCellsManager::ComputeBoxIntersections(const AxisAlignedBox3 &box, ViewCellContainer &viewCells) const
|
---|
3752 | {
|
---|
3753 | return mVspBspTree->ComputeBoxIntersections(box, viewCells);
|
---|
3754 | }
|
---|
3755 |
|
---|
3756 |
|
---|
3757 | int VspBspViewCellsManager::CastLineSegment(const Vector3 &origin,
|
---|
3758 | const Vector3 &termination,
|
---|
3759 | ViewCellContainer &viewcells)
|
---|
3760 | {
|
---|
3761 | return mVspBspTree->CastLineSegment(origin, termination, viewcells);
|
---|
3762 | }
|
---|
3763 |
|
---|
3764 |
|
---|
3765 | void VspBspViewCellsManager::ExportColor(Exporter *exporter,
|
---|
3766 | ViewCell *vc) const
|
---|
3767 | {
|
---|
3768 | const bool vcValid = CheckValidity(vc, mMinPvsSize, mMaxPvsSize);
|
---|
3769 |
|
---|
3770 | float importance = 0;
|
---|
3771 | static Material m;
|
---|
3772 |
|
---|
3773 | switch (mColorCode)
|
---|
3774 | {
|
---|
3775 | case 0: // Random
|
---|
3776 | {
|
---|
3777 | if (vcValid)
|
---|
3778 | {
|
---|
3779 | m.mDiffuseColor.r = 0.5f + RandomValue(0.0f, 0.5f);
|
---|
3780 | m.mDiffuseColor.g = 0.5f + RandomValue(0.0f, 0.5f);
|
---|
3781 | m.mDiffuseColor.b = 0.5f + RandomValue(0.f, 0.5f);
|
---|
3782 | }
|
---|
3783 | else
|
---|
3784 | {
|
---|
3785 | m.mDiffuseColor.r = 0.0f;
|
---|
3786 | m.mDiffuseColor.g = 1.0f;
|
---|
3787 | m.mDiffuseColor.b = 0.0f;
|
---|
3788 | }
|
---|
3789 |
|
---|
3790 | exporter->SetForcedMaterial(m);
|
---|
3791 | return;
|
---|
3792 | }
|
---|
3793 |
|
---|
3794 | case 1: // pvs
|
---|
3795 | {
|
---|
3796 | importance = (float)vc->GetPvs().GetSize() /
|
---|
3797 | (float)mCurrentViewCellsStats.maxPvs;
|
---|
3798 |
|
---|
3799 | }
|
---|
3800 | break;
|
---|
3801 | case 2: // merges
|
---|
3802 | {
|
---|
3803 | int lSize = mViewCellsTree->GetSize(vc);
|
---|
3804 | importance = (float)lSize / (float)mCurrentViewCellsStats.maxLeaves;
|
---|
3805 | }
|
---|
3806 | break;
|
---|
3807 | case 3: // merge tree differene
|
---|
3808 | {
|
---|
3809 | importance = (float)GetMaxTreeDiff(vc) /
|
---|
3810 | (float)(mVspBspTree->GetStatistics().maxDepth * 2);
|
---|
3811 |
|
---|
3812 | }
|
---|
3813 | break;
|
---|
3814 | default:
|
---|
3815 | break;
|
---|
3816 | }
|
---|
3817 |
|
---|
3818 | // special color code for invalid view cells
|
---|
3819 | m.mDiffuseColor.r = importance;
|
---|
3820 | m.mDiffuseColor.g = 1.0f - m.mDiffuseColor.r;
|
---|
3821 | m.mDiffuseColor.b = vcValid ? 1.0f : 0.0f;
|
---|
3822 |
|
---|
3823 | //Debug << "importance: " << importance << endl;
|
---|
3824 | exporter->SetForcedMaterial(m);
|
---|
3825 | }
|
---|
3826 |
|
---|
3827 |
|
---|
3828 | void VspBspViewCellsManager::ExportViewCellGeometry(Exporter *exporter,
|
---|
3829 | ViewCell *vc,
|
---|
3830 | const Plane3 *clipPlane) const
|
---|
3831 | {
|
---|
3832 | if (vc->GetMesh())
|
---|
3833 | {
|
---|
3834 | exporter->ExportMesh(vc->GetMesh());
|
---|
3835 |
|
---|
3836 | return;
|
---|
3837 | }
|
---|
3838 |
|
---|
3839 |
|
---|
3840 | if (clipPlane)
|
---|
3841 | {
|
---|
3842 | ViewCellContainer leaves;
|
---|
3843 | mViewCellsTree->CollectLeaves(vc, leaves);
|
---|
3844 | ViewCellContainer::const_iterator it, it_end = leaves.end();
|
---|
3845 |
|
---|
3846 | for (it = leaves.begin(); it != it_end; ++ it)
|
---|
3847 | {
|
---|
3848 | BspNodeGeometry geom;
|
---|
3849 |
|
---|
3850 | BspNodeGeometry front;
|
---|
3851 | BspNodeGeometry back;
|
---|
3852 |
|
---|
3853 | BspLeaf *leaf = dynamic_cast<BspViewCell *>(*it)->mLeaf;
|
---|
3854 | mVspBspTree->ConstructGeometry(leaf, geom);
|
---|
3855 |
|
---|
3856 | const float eps = 0.00000001f;
|
---|
3857 | const int cf = geom.Side(*clipPlane, eps);
|
---|
3858 |
|
---|
3859 | if (cf == -1)
|
---|
3860 | {
|
---|
3861 | exporter->ExportPolygons(geom.GetPolys());
|
---|
3862 | }
|
---|
3863 | else if (cf == 0)
|
---|
3864 | {
|
---|
3865 | geom.SplitGeometry(front,
|
---|
3866 | back,
|
---|
3867 | *clipPlane,
|
---|
3868 | mViewSpaceBox,
|
---|
3869 | eps);
|
---|
3870 |
|
---|
3871 | //Debug << "geo size: " << geom.Size() << endl;
|
---|
3872 | //Debug << "size b: " << back.Size() << " f: " << front.Size() << endl;
|
---|
3873 | if (back.Valid())
|
---|
3874 | {
|
---|
3875 | exporter->ExportPolygons(back.GetPolys());
|
---|
3876 | }
|
---|
3877 | }
|
---|
3878 | }
|
---|
3879 | }
|
---|
3880 | else
|
---|
3881 | {
|
---|
3882 | BspNodeGeometry geom;
|
---|
3883 | mVspBspTree->ConstructGeometry(vc, geom);
|
---|
3884 |
|
---|
3885 | exporter->ExportPolygons(geom.GetPolys());
|
---|
3886 | }
|
---|
3887 | }
|
---|
3888 |
|
---|
3889 |
|
---|
3890 | int VspBspViewCellsManager::GetMaxTreeDiff(ViewCell *vc) const
|
---|
3891 | {
|
---|
3892 | ViewCellContainer leaves;
|
---|
3893 | mViewCellsTree->CollectLeaves(vc, leaves);
|
---|
3894 |
|
---|
3895 | int maxDist = 0;
|
---|
3896 |
|
---|
3897 | // compute max height difference
|
---|
3898 | for (int i = 0; i < (int)leaves.size(); ++ i)
|
---|
3899 | for (int j = 0; j < (int)leaves.size(); ++ j)
|
---|
3900 | {
|
---|
3901 | BspLeaf *leaf = dynamic_cast<BspViewCell *>(leaves[i])->mLeaf;
|
---|
3902 |
|
---|
3903 | if (i != j)
|
---|
3904 | {
|
---|
3905 | BspLeaf *leaf2 =dynamic_cast<BspViewCell *>(leaves[j])->mLeaf;
|
---|
3906 | int dist = mVspBspTree->TreeDistance(leaf, leaf2);
|
---|
3907 | if (dist > maxDist)
|
---|
3908 | maxDist = dist;
|
---|
3909 | }
|
---|
3910 | }
|
---|
3911 |
|
---|
3912 | return maxDist;
|
---|
3913 | }
|
---|
3914 |
|
---|
3915 |
|
---|
3916 | ViewCell *VspBspViewCellsManager::GetViewCell(const Vector3 &point) const
|
---|
3917 | {
|
---|
3918 | if (!mVspBspTree)
|
---|
3919 | return NULL;
|
---|
3920 |
|
---|
3921 | if (!mViewSpaceBox.IsInside(point))
|
---|
3922 | return NULL;
|
---|
3923 |
|
---|
3924 | return mVspBspTree->GetViewCell(point);
|
---|
3925 | }
|
---|
3926 |
|
---|
3927 |
|
---|
3928 | void VspBspViewCellsManager::CreateMesh(ViewCell *vc)
|
---|
3929 | {
|
---|
3930 | if (vc->GetMesh())
|
---|
3931 | delete vc->GetMesh();
|
---|
3932 |
|
---|
3933 |
|
---|
3934 | BspNodeGeometry geom;
|
---|
3935 |
|
---|
3936 | mVspBspTree->ConstructGeometry(vc, geom);
|
---|
3937 |
|
---|
3938 | Mesh *mesh = new Mesh();
|
---|
3939 | geom.AddToMesh(*mesh);
|
---|
3940 | vc->SetMesh(mesh);
|
---|
3941 | mMeshContainer.push_back(mesh);
|
---|
3942 | }
|
---|
3943 |
|
---|
3944 |
|
---|
3945 | ViewCellsManager *ViewCellsManager::LoadViewCells(const string filename,
|
---|
3946 | ObjectContainer *objects)
|
---|
3947 | {
|
---|
3948 | ViewCellsParser parser;
|
---|
3949 |
|
---|
3950 | ViewCellsManager *vm = NULL;
|
---|
3951 |
|
---|
3952 | if (parser.ParseFile(filename, &vm, objects))
|
---|
3953 | {
|
---|
3954 | //vm->PrepareLoadedViewCells();
|
---|
3955 | vm->ResetViewCells();
|
---|
3956 |
|
---|
3957 | vm->mViewCellsFinished = true;
|
---|
3958 | vm->mMaxPvsSize = (int)objects->size();
|
---|
3959 |
|
---|
3960 | vm->FinalizeViewCells(true);
|
---|
3961 |
|
---|
3962 | vm->mViewCellsTree->AssignRandomColors();
|
---|
3963 | Debug << (int)vm->mViewCells.size() << " view cells loaded" << endl;
|
---|
3964 | }
|
---|
3965 | else
|
---|
3966 | {
|
---|
3967 | Debug << "failed loading view cells" << endl;
|
---|
3968 | DEL_PTR(vm);
|
---|
3969 | }
|
---|
3970 |
|
---|
3971 |
|
---|
3972 | return vm;
|
---|
3973 | }
|
---|
3974 |
|
---|
3975 |
|
---|
3976 | inline bool ilt(Intersectable *obj1, Intersectable *obj2)
|
---|
3977 | {
|
---|
3978 | return obj1->mId < obj2->mId;
|
---|
3979 | }
|
---|
3980 |
|
---|
3981 |
|
---|
3982 | bool VspBspViewCellsManager::ExportViewCells(const string filename)
|
---|
3983 | {
|
---|
3984 | cout << "exporting view cells to xml ... ";
|
---|
3985 | std::ofstream stream;
|
---|
3986 |
|
---|
3987 | // for output we need unique ids for each view cell
|
---|
3988 | CreateUniqueViewCellIds();
|
---|
3989 |
|
---|
3990 | stream.open(filename.c_str());
|
---|
3991 | stream << "<?xml version=\"1.0\" encoding=\"UTF-8\"?>"<<endl;
|
---|
3992 | stream << "<Visibility_Solution>" << endl;
|
---|
3993 |
|
---|
3994 | //-- the view space bounding box
|
---|
3995 | stream << "<ViewSpaceBox"
|
---|
3996 | << " min=\"" << mViewSpaceBox.Min().x << " " << mViewSpaceBox.Min().y << " " << mViewSpaceBox.Min().z << "\""
|
---|
3997 | << " max=\"" << mViewSpaceBox.Max().x << " " << mViewSpaceBox.Max().y << " " << mViewSpaceBox.Max().z << "\" />" << endl;
|
---|
3998 |
|
---|
3999 | //-- the type of the view cells hierarchy
|
---|
4000 | stream << "<Hierarchy name=\"vspBspTree\" />" << endl;
|
---|
4001 |
|
---|
4002 | //-- load the view cells itself, i.e., the ids and the pvs
|
---|
4003 | stream << "<ViewCells>" << endl;
|
---|
4004 |
|
---|
4005 | #if 0
|
---|
4006 |
|
---|
4007 | ViewCellContainer::const_iterator it, it_end = mViewCells.end();
|
---|
4008 |
|
---|
4009 | for (it = mViewCells.begin(); it != it_end; ++ it)
|
---|
4010 | ExportViewCell(*it, stream);
|
---|
4011 | #else
|
---|
4012 | mViewCellsTree->Export(stream);
|
---|
4013 | #endif
|
---|
4014 |
|
---|
4015 | stream << "</ViewCells>" << endl;
|
---|
4016 |
|
---|
4017 | //-- load the hierarchy
|
---|
4018 | stream << "<Hierarchy>" << endl;
|
---|
4019 | mVspBspTree->Export(stream);
|
---|
4020 | stream << endl << "</Hierarchy>" << endl;
|
---|
4021 |
|
---|
4022 | stream << "</Visibility_Solution>" << endl;
|
---|
4023 | stream.close();
|
---|
4024 |
|
---|
4025 | cout << "finished" << endl;
|
---|
4026 |
|
---|
4027 | return true;
|
---|
4028 | }
|
---|
4029 |
|
---|
4030 |
|
---|
4031 | int VspBspViewCellsManager::CastBeam(Beam &beam)
|
---|
4032 | {
|
---|
4033 | return mVspBspTree->CastBeam(beam);
|
---|
4034 | }
|
---|
4035 |
|
---|
4036 |
|
---|
4037 | void VspBspViewCellsManager::Finalize(ViewCell *viewCell,
|
---|
4038 | const bool createMesh)
|
---|
4039 | {
|
---|
4040 | float area = 0;
|
---|
4041 | float volume = 0;
|
---|
4042 |
|
---|
4043 | ViewCellContainer leaves;
|
---|
4044 | mViewCellsTree->CollectLeaves(viewCell, leaves);
|
---|
4045 |
|
---|
4046 | ViewCellContainer::const_iterator it, it_end = leaves.end();
|
---|
4047 |
|
---|
4048 | for (it = leaves.begin(); it != it_end; ++ it)
|
---|
4049 | {
|
---|
4050 | BspNodeGeometry geom;
|
---|
4051 | BspLeaf *leaf = dynamic_cast<BspViewCell *>(*it)->mLeaf;
|
---|
4052 | mVspBspTree->ConstructGeometry(leaf, geom);
|
---|
4053 |
|
---|
4054 | float lVol = geom.GetVolume();
|
---|
4055 | float lArea = geom.GetArea();
|
---|
4056 |
|
---|
4057 | //(*it)->SetVolume(vol);
|
---|
4058 | //(*it)->SetArea(area);
|
---|
4059 |
|
---|
4060 | area += lArea;
|
---|
4061 | volume += lVol;
|
---|
4062 |
|
---|
4063 | CreateMesh(*it);
|
---|
4064 | }
|
---|
4065 |
|
---|
4066 | viewCell->SetVolume(volume);
|
---|
4067 | viewCell->SetArea(area);
|
---|
4068 | }
|
---|
4069 |
|
---|
4070 |
|
---|
4071 | void VspBspViewCellsManager::TestSubdivision()
|
---|
4072 | {
|
---|
4073 | ViewCellContainer leaves;
|
---|
4074 | mViewCellsTree->CollectLeaves(mViewCellsTree->GetRoot(), leaves);
|
---|
4075 |
|
---|
4076 | ViewCellContainer::const_iterator it, it_end = leaves.end();
|
---|
4077 |
|
---|
4078 | const float vol = mViewSpaceBox.GetVolume();
|
---|
4079 | float subdivVol = 0;
|
---|
4080 | float newVol = 0;
|
---|
4081 |
|
---|
4082 | for (it = leaves.begin(); it != it_end; ++ it)
|
---|
4083 | {
|
---|
4084 | BspNodeGeometry geom;
|
---|
4085 | BspLeaf *leaf = dynamic_cast<BspViewCell *>(*it)->mLeaf;
|
---|
4086 | mVspBspTree->ConstructGeometry(leaf, geom);
|
---|
4087 |
|
---|
4088 | const float lVol = geom.GetVolume();
|
---|
4089 |
|
---|
4090 | newVol += lVol;
|
---|
4091 | subdivVol += (*it)->GetVolume();
|
---|
4092 |
|
---|
4093 | float thres = 0.9f;
|
---|
4094 | if ((lVol < ((*it)->GetVolume() * thres)) || (lVol * thres > ((*it)->GetVolume())))
|
---|
4095 | Debug << "warning: " << lVol << " " << (*it)->GetVolume() << endl;
|
---|
4096 | }
|
---|
4097 |
|
---|
4098 | Debug << "exact volume: " << vol << endl;
|
---|
4099 | Debug << "subdivision volume: " << subdivVol << endl;
|
---|
4100 | Debug << "new volume: " << newVol << endl;
|
---|
4101 | }
|
---|
4102 |
|
---|
4103 |
|
---|
4104 | void VspBspViewCellsManager::PrepareLoadedViewCells()
|
---|
4105 | {
|
---|
4106 | // TODO: do I still need this here?
|
---|
4107 | if (0)
|
---|
4108 | mVspBspTree->RepairViewCellsLeafLists();
|
---|
4109 | }
|
---|
4110 |
|
---|
4111 |
|
---|
4112 | void VspBspViewCellsManager::TestFilter(const ObjectContainer &objects)
|
---|
4113 | {
|
---|
4114 | Exporter *exporter = Exporter::GetExporter("filter.x3d");
|
---|
4115 |
|
---|
4116 | Vector3 bsize = mViewSpaceBox.Size();
|
---|
4117 | const Vector3 viewPoint(mViewSpaceBox.Center());
|
---|
4118 | const Vector3 width = Vector3(mFilterWidth);
|
---|
4119 |
|
---|
4120 | PrVs testPrVs;
|
---|
4121 |
|
---|
4122 | if (exporter)
|
---|
4123 | {
|
---|
4124 | ViewCellContainer viewCells;
|
---|
4125 |
|
---|
4126 | const AxisAlignedBox3 tbox = GetFilterBBox(viewPoint, mFilterWidth);
|
---|
4127 |
|
---|
4128 | GetPrVS(viewPoint, testPrVs);
|
---|
4129 |
|
---|
4130 | exporter->SetWireframe();
|
---|
4131 |
|
---|
4132 | exporter->SetForcedMaterial(RgbColor(1,1,1));
|
---|
4133 | exporter->ExportBox(tbox);
|
---|
4134 |
|
---|
4135 | exporter->SetFilled();
|
---|
4136 |
|
---|
4137 | exporter->SetForcedMaterial(RgbColor(0,1,0));
|
---|
4138 | ExportViewCellGeometry(exporter, GetViewCell(viewPoint));
|
---|
4139 |
|
---|
4140 | //exporter->ResetForcedMaterial();
|
---|
4141 | exporter->SetForcedMaterial(RgbColor(0,0,1));
|
---|
4142 | ExportViewCellGeometry(exporter, testPrVs.mViewCell);
|
---|
4143 |
|
---|
4144 | exporter->SetForcedMaterial(RgbColor(1,0,0));
|
---|
4145 | exporter->ExportGeometry(objects);
|
---|
4146 |
|
---|
4147 | delete exporter;
|
---|
4148 | }
|
---|
4149 | }
|
---|
4150 |
|
---|
4151 |
|
---|
4152 | void VspBspViewCellsManager::CollectMergeCandidates(const VssRayContainer &rays,
|
---|
4153 | vector<MergeCandidate> &candidates)
|
---|
4154 | {
|
---|
4155 | cout << "collecting merge candidates ... " << endl;
|
---|
4156 |
|
---|
4157 | if (mUseRaysForMerge)
|
---|
4158 | {
|
---|
4159 | mVspBspTree->CollectMergeCandidates(rays, candidates);
|
---|
4160 | }
|
---|
4161 | else
|
---|
4162 | {
|
---|
4163 | vector<BspLeaf *> leaves;
|
---|
4164 | mVspBspTree->CollectLeaves(leaves);
|
---|
4165 |
|
---|
4166 | mVspBspTree->CollectMergeCandidates(leaves, candidates);
|
---|
4167 | }
|
---|
4168 |
|
---|
4169 | cout << "fininshed collecting candidates" << endl;
|
---|
4170 | }
|
---|
4171 |
|
---|
4172 |
|
---|
4173 | void VspBspViewCellsManager::AddCurrentViewCellsToHierarchy()
|
---|
4174 | {
|
---|
4175 | ViewCellContainer::const_iterator it, it_end = mViewCells.end();
|
---|
4176 | for (it = mViewCells.begin(); it != it_end; ++ it)
|
---|
4177 | {
|
---|
4178 | }
|
---|
4179 | }
|
---|
4180 |
|
---|
4181 | //////////////////////////////////
|
---|
4182 | ViewCellsManager *ViewCellsManagerFactory::Create(const string mName)
|
---|
4183 | {
|
---|
4184 | //TODO
|
---|
4185 | return NULL;// new VspBspViewCellsManager();
|
---|
4186 | }
|
---|
4187 |
|
---|