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 | #include "BoundingBoxConverter.h"
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18 |
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19 |
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20 |
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21 |
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22 | namespace GtpVisibilityPreprocessor {
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23 |
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24 |
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25 | // HACK
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26 | const static bool SAMPLE_AFTER_SUBDIVISION = true;
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27 | const static bool TEST_EMPTY_VIEW_CELLS = false;
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28 |
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29 |
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30 |
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31 | template <typename T> class myless
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32 | {
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33 | public:
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34 | //bool operator() (HierarchyNode *v1, HierarchyNode *v2) const
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35 | bool operator() (T v1, T v2) const
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36 | {
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37 | return (v1->GetMergeCost() < v2->GetMergeCost());
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38 | }
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39 | };
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40 |
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41 | //typedef priority_queue<ViewCell *, vector<ViewCell *>, myless<vector<ViewCell *>::value_type> > FilterQueue;
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42 |
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43 |
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44 |
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45 | ViewCellsManager::ViewCellsManager(Environment *env):
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46 | mRenderer(NULL),
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47 | mInitialSamples(0),
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48 | mConstructionSamples(0),
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49 | mPostProcessSamples(0),
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50 | mVisualizationSamples(0),
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51 | mTotalAreaValid(false),
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52 | mTotalArea(0.0f),
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53 | mViewCellsFinished(false),
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54 | mMaxPvsSize(9999999),
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55 | mMinPvsSize(0), // one means only empty view cells are invalid
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56 | mMaxPvsRatio(1.0),
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57 | mViewCellPvsIsUpdated(false)
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58 | ,mEnvironment(env)
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59 | {
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60 | mViewSpaceBox.Initialize();
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61 | ParseEnvironment();
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62 |
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63 | mViewCellsTree = new ViewCellsTree(this, env);
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64 | }
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65 |
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66 |
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67 | void ViewCellsManager::ParseEnvironment()
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68 | {
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69 | // visualization stuff
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70 | mEnvironment->GetBoolValue("ViewCells.Visualization.exportRays", mExportRays);
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71 | mEnvironment->GetBoolValue("ViewCells.Visualization.exportGeometry", mExportGeometry);
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72 | mEnvironment->GetFloatValue("ViewCells.maxPvsRatio", mMaxPvsRatio);
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73 |
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74 | mEnvironment->GetBoolValue("ViewCells.pruneEmptyViewCells", mPruneEmptyViewCells);
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75 |
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76 | // HACK
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77 | if (0)
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78 | mMinPvsSize = mPruneEmptyViewCells ? 1 : 0;
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79 | else
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80 | mMinPvsSize = 0;
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81 |
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82 | mEnvironment->GetBoolValue("ViewCells.processOnlyValidViewCells", mOnlyValidViewCells);
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83 |
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84 | mEnvironment->GetIntValue("ViewCells.Construction.samples", mConstructionSamples);
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85 | mEnvironment->GetIntValue("ViewCells.PostProcess.samples", mPostProcessSamples);
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86 | mEnvironment->GetBoolValue("ViewCells.PostProcess.useRaysForMerge", mUseRaysForMerge);
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87 |
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88 | mEnvironment->GetIntValue("ViewCells.Visualization.samples", mVisualizationSamples);
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89 |
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90 | mEnvironment->GetIntValue("ViewCells.Construction.samplesPerPass", mSamplesPerPass);
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91 | mEnvironment->GetBoolValue("ViewCells.exportToFile", mExportViewCells);
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92 |
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93 | mEnvironment->GetIntValue("ViewCells.active", mNumActiveViewCells);
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94 | mEnvironment->GetBoolValue("ViewCells.PostProcess.compress", mCompressViewCells);
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95 | mEnvironment->GetBoolValue("ViewCells.Visualization.useClipPlane", mUseClipPlaneForViz);
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96 | mEnvironment->GetBoolValue("ViewCells.PostProcess.merge", mMergeViewCells);
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97 | mEnvironment->GetBoolValue("ViewCells.evaluateViewCells", mEvaluateViewCells);
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98 | mEnvironment->GetBoolValue("ViewCells.showVisualization", mShowVisualization);
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99 | mEnvironment->GetIntValue("ViewCells.Filter.maxSize", mMaxFilterSize);
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100 | mEnvironment->GetFloatValue("ViewCells.Filter.width", mFilterWidth);
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101 | mEnvironment->GetIntValue("ViewCells.renderCostEvaluationType", mRenderCostEvaluationType);
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102 |
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103 | mEnvironment->GetBoolValue("ViewCells.exportBboxesForPvs", mExportBboxesForPvs);
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104 | mEnvironment->GetBoolValue("ViewCells.exportPvs", mExportPvs);
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105 |
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106 | char buf[100];
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107 | mEnvironment->GetStringValue("ViewCells.samplingType", buf);
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108 |
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109 |
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110 | if (strcmp(buf, "box") == 0)
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111 | {
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112 | mSamplingType = Preprocessor::SPATIAL_BOX_BASED_DISTRIBUTION;
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113 | }
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114 | else if (strcmp(buf, "directional") == 0)
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115 | {
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116 | mSamplingType = Preprocessor::DIRECTION_BASED_DISTRIBUTION;
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117 | }
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118 | else
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119 | {
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120 | Debug << "error! wrong sampling type" << endl;
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121 | exit(0);
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122 | }
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123 |
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124 | mEnvironment->GetStringValue("ViewCells.Evaluation.samplingType", buf);
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125 |
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126 | if (strcmp(buf, "box") == 0)
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127 | {
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128 | mEvaluationSamplingType = Preprocessor::SPATIAL_BOX_BASED_DISTRIBUTION;
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129 | }
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130 | else if (strcmp(buf, "directional") == 0)
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131 | {
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132 | mEvaluationSamplingType = Preprocessor::DIRECTION_BASED_DISTRIBUTION;
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133 | }
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134 | else
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135 | {
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136 | Debug << "error! wrong sampling type" << endl;
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137 | exit(0);
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138 | }
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139 |
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140 | mEnvironment->GetStringValue("ViewCells.renderCostEvaluationType", buf);
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141 |
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142 | if (strcmp(buf, "perobject") == 0)
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143 | {
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144 | mRenderCostEvaluationType = ViewCellsManager::PER_OBJECT;
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145 | }
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146 | else if (strcmp(buf, "directional") == 0)
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147 | {
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148 | mRenderCostEvaluationType = ViewCellsManager::PER_TRIANGLE;
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149 | }
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150 | else
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151 | {
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152 | Debug << "error! wrong sampling type" << endl;
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153 | exit(0);
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154 | }
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155 |
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156 | mEnvironment->GetStringValue("ViewCells.Visualization.colorCode", buf);
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157 |
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158 | if (strcmp(buf, "PVS") == 0)
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159 | mColorCode = 1;
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160 | else if (strcmp(buf, "MergedLeaves") == 0)
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161 | mColorCode = 2;
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162 | else if (strcmp(buf, "MergedTreeDiff") == 0)
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163 | mColorCode = 3;
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164 | else
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165 | mColorCode = 0;
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166 |
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167 |
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168 |
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169 | Debug << "***********View Cells options ****************" << endl;
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170 | Debug << "color code: " << mColorCode << endl;
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171 |
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172 | Debug << "export rays: " << mExportRays << endl;
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173 | Debug << "export geometry: " << mExportGeometry << endl;
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174 | Debug << "max pvs ratio: " << mMaxPvsRatio << endl;
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175 |
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176 | Debug << "prune empty view cells: " << mPruneEmptyViewCells << endl;
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177 |
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178 | Debug << "process only valid view cells: " << mOnlyValidViewCells << endl;
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179 | Debug << "construction samples: " << mConstructionSamples << endl;
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180 | Debug << "post process samples: " << mPostProcessSamples << endl;
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181 | Debug << "post process use rays for merge: " << mUseRaysForMerge << endl;
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182 | Debug << "visualization samples: " << mVisualizationSamples << endl;
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183 | Debug << "construction samples per pass: " << mSamplesPerPass << endl;
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184 | Debug << "export to file: " << mExportViewCells << endl;
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185 |
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186 | Debug << "active view cells: " << mNumActiveViewCells << endl;
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187 | Debug << "post process compress: " << mCompressViewCells << endl;
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188 | Debug << "visualization use clipPlane: " << mUseClipPlaneForViz << endl;
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189 | Debug << "post process merge: " << mMergeViewCells << endl;
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190 | Debug << "evaluate view cells: " << mEvaluateViewCells << endl;
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191 | Debug << "sampling type: " << mSamplingType << endl;
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192 | Debug << "render cost evaluation type: " << mRenderCostEvaluationType << endl;
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193 | Debug << "evaluation sampling type: " << mEvaluationSamplingType << endl;
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194 | Debug << "show visualization: " << mShowVisualization << endl;
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195 | Debug << "filter width: " << mFilterWidth << endl;
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196 | Debug << "sample after subdivision: " << SAMPLE_AFTER_SUBDIVISION << endl;
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197 |
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198 | Debug << "export bounding boxes: " << mExportBboxesForPvs << endl;
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199 | Debug << "export pvs for view cells: " << mExportPvs << endl;
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200 |
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201 | Debug << endl;
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202 | }
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203 |
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204 |
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205 | ViewCellsManager::~ViewCellsManager()
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206 | {
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207 | DEL_PTR(mRenderer);
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208 |
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209 | if (!ViewCellsTreeConstructed())
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210 | CLEAR_CONTAINER(mViewCells);
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211 | else
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212 | DEL_PTR(mViewCellsTree);
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213 |
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214 | CLEAR_CONTAINER(mMeshContainer);
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215 | }
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216 |
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217 | AxisAlignedBox3
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218 | ViewCellsManager::GetViewCellBox(ViewCell *vc)
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219 | {
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220 | Mesh *m = vc->GetMesh();
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221 |
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222 | if (m) {
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223 | m->ComputeBoundingBox();
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224 | return m->mBox;
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225 | }
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226 |
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227 | AxisAlignedBox3 box;
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228 |
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229 | box.Initialize();
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230 |
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231 | if (!vc->IsLeaf()) {
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232 | ViewCellInterior *vci = (ViewCellInterior *) vc;
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233 |
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234 | ViewCellContainer::iterator it = vci->mChildren.begin();
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235 | for (; it != vci->mChildren.end(); ++it) {
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236 | box.Include(GetViewCellBox(*it));
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237 | }
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238 | }
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239 |
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240 | return box;
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241 | }
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242 |
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243 | void ViewCellsManager::CollectEmptyViewCells()
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244 | {
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245 | mEmptyViewCells.clear();
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246 | ViewCellContainer leaves;
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247 | mViewCellsTree->CollectLeaves(mViewCellsTree->GetRoot(), leaves);
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248 |
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249 | ViewCellContainer::const_iterator it, it_end = leaves.end();
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250 |
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251 | cout << "collecting empty view cells" << endl;
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252 |
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253 | for (it = leaves.begin(); it != it_end; ++ it)
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254 | {
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255 | if ((*it)->GetPvs().Empty())
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256 | {
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257 | mEmptyViewCells.push_back(*it);
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258 | }
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259 | }
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260 | Debug << "empty view cells found: " << (int)mEmptyViewCells.size() << endl;
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261 | }
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262 |
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263 |
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264 | void ViewCellsManager::TestEmptyViewCells(const ObjectContainer &obj)
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265 | {
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266 | ViewCellContainer::const_iterator it, it_end = mEmptyViewCells.end();
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267 |
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268 | char buf[50];
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269 | int i = 0;
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270 | for (it = mEmptyViewCells.begin(); it != it_end; ++ it)
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271 | {
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272 | if (!(*it)->GetPvs().Empty())
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273 | {
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274 | sprintf(buf, "empty-viewcells-%09d.x3d", i/*(*it)->GetId()*/);
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275 | Exporter *exporter = Exporter::GetExporter(buf);
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276 |
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277 | if (exporter && i < 20)
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278 | {
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279 | Ray *pray = (*it)->mPiercingRays[0];
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280 | Debug << "view cell " << (*it)->GetId() << " not empty, pvs: "
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281 | << (*it)->GetPvs().GetSize() << " " << (int)pray->intersections.size() << endl;
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282 |
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283 | exporter->ExportRays((*it)->mPiercingRays);
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284 |
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285 | exporter->SetFilled();
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286 | exporter->SetForcedMaterial(RgbColor(0,0,1));
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287 |
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288 | for (int j = 0; j < (int)pray->intersections.size(); ++ j)
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289 | {
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290 | if (pray->intersections[j].mObject)
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291 | exporter->ExportIntersectable(pray->intersections[j].mObject);
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292 | }
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293 |
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294 | //exporter->SetWireframe();
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295 | exporter->SetForcedMaterial(RgbColor(0,1,0));
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296 | exporter->ExportGeometry(obj);
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297 |
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298 | exporter->SetFilled();
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299 |
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300 | exporter->SetForcedMaterial(RgbColor(1,0,0));
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301 | ExportViewCellGeometry(exporter, *it);
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302 |
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303 | delete exporter;
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304 | }
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305 |
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306 |
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307 | ++ i;
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308 | }
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309 | }
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310 | Debug << "\nSampled " << i << " new view cells (" << " of " << (int)mEmptyViewCells.size() << ")" << endl << endl;
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311 | }
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312 |
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313 |
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314 | int ViewCellsManager::CastPassSamples(const int samplesPerPass,
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315 | const int sampleType,
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316 | VssRayContainer &passSamples) const
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317 | {
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318 | SimpleRayContainer simpleRays;
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319 |
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320 | preprocessor->GenerateRays(samplesPerPass,
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321 | sampleType,
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322 | simpleRays);
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323 |
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324 | // shoot simple ray and add it to importance samples
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325 | preprocessor->CastRays(simpleRays, passSamples);
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326 |
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327 | return (int)passSamples.size();
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328 | }
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329 |
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330 |
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331 |
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332 | /// helper function which destroys rays or copies them into the output ray container
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333 | inline void disposeRays(VssRayContainer &rays, VssRayContainer *outRays)
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334 | {
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335 | cout << "disposing samples ... ";
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336 | long startTime = GetTime();
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337 | int n = (int)rays.size();
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338 |
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339 | if (outRays)
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340 | {
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341 | VssRayContainer::const_iterator it, it_end = rays.end();
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342 |
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343 | for (it = rays.begin(); it != it_end; ++ it)
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344 | {
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345 | outRays->push_back(*it);
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346 | }
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347 | }
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348 | else
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349 | {
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350 | VssRayContainer::const_iterator it, it_end = rays.end();
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351 |
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352 | for (it = rays.begin(); it != it_end; ++ it)
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353 | {
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354 | //(*it)->Unref();
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355 | if (!(*it)->IsActive())
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356 | delete (*it);
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357 | }
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358 | }
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359 |
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360 | cout << "finished" << endl;
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361 | Debug << "disposed " << n << " samples in " << TimeDiff(startTime, GetTime()) * 1e-3 << " secs" << endl;
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362 | }
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363 |
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364 |
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365 | int ViewCellsManager::Construct(Preprocessor *preprocessor, VssRayContainer *outRays)
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366 | {
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367 | int numSamples = 0;
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368 | SimpleRayContainer simpleRays;
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369 |
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370 | VssRayContainer initialSamples;
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371 |
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372 | cout << "view cell construction: casting " << mInitialSamples << " initial samples ... ";
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373 |
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374 | long startTime = GetTime();
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375 |
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376 | //-- construction rays => we use uniform samples for this
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377 | CastPassSamples(mInitialSamples,
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378 | mSamplingType,
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379 | initialSamples);
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380 |
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381 | cout << "finished" << endl;
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382 |
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383 |
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384 | // construct view cells
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385 | ConstructSubdivision(preprocessor->mObjects, initialSamples);
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386 |
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387 | // initial samples count for overall samples ...
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388 | numSamples += mInitialSamples;
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389 |
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390 | // rays can be passed or deleted
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391 | disposeRays(initialSamples, outRays);
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392 |
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393 | cout << "time needed for initial construction: "
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394 | << TimeDiff(startTime, GetTime()) * 1e-3 << " secs" << endl;
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395 |
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396 | Debug << "time needed for initial construction: "
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397 | << TimeDiff(startTime, GetTime()) * 1e-3 << " secs" << endl;
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398 |
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399 |
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400 | // take post processing time
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401 | startTime = GetTime();
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402 |
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403 |
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404 | // testing the view cell filter functionality
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405 | if (0) TestFilter(preprocessor->mObjects);
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406 |
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407 | // -- stats after contruction
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408 | ResetViewCells();
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409 |
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410 | Debug << "\nView cells after initial sampling:\n" << mCurrentViewCellsStats << endl;
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411 |
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412 | if (1) // export initial view cells
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413 | {
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414 | const char filename[] = "view_cells.wrl";
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415 | Exporter *exporter = Exporter::GetExporter(filename);
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416 |
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417 |
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418 | if (exporter)
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419 | {
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420 | cout << "exporting initial view cells (=leaves) to " << filename << " ... ";
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421 | if (mExportGeometry)
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422 | {
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423 | exporter->ExportGeometry(preprocessor->mObjects);
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424 | }
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425 |
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426 | exporter->SetWireframe();
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427 | ExportViewCellsForViz(exporter);
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428 |
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429 | delete exporter;
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430 | cout << "finished" << endl;
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431 | }
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432 | }
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433 |
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434 | //-- guided rays are used for further sampling
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435 | const int n = mConstructionSamples; //+initialSamples;
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436 |
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437 | // should we use directional samples?
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438 | bool dirSamples = (mSamplingType == Preprocessor::DIRECTION_BASED_DISTRIBUTION);
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439 |
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440 | // -- the main loop
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441 | while (numSamples < n)
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442 | {
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443 | cout << "casting " << mSamplesPerPass << " samples of " << n << " ... ";
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444 | Debug << "casting " << mSamplesPerPass << " samples of " << n << " ... ";
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445 |
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446 | VssRayContainer constructionSamples;
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447 |
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448 | const int samplingType = mSamplingType;
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449 | /*dirSamples ?
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450 | Preprocessor::DIRECTION_BASED_DISTRIBUTION :
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451 | Preprocessor::SPATIAL_BOX_BASED_DISTRIBUTION;*/
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452 |
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453 | if (0) dirSamples = !dirSamples; // toggle sampling method
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454 |
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455 | // cast new samples
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456 | numSamples += CastPassSamples(mSamplesPerPass,
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457 | samplingType,
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458 | constructionSamples);
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459 |
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460 | cout << "finished" << endl;
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461 |
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462 | cout << "computing sample contribution for " << (int)constructionSamples.size() << " samples ... ";
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463 |
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464 | // computes sample contribution of cast rays TODO: leak?
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465 | if (SAMPLE_AFTER_SUBDIVISION)
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466 | ComputeSampleContributions(constructionSamples, true, false);
|
---|
467 |
|
---|
468 | cout << "finished" << endl;
|
---|
469 |
|
---|
470 |
|
---|
471 | disposeRays(constructionSamples, outRays);
|
---|
472 |
|
---|
473 | cout << "total samples: " << numSamples << endl;
|
---|
474 | }
|
---|
475 |
|
---|
476 |
|
---|
477 |
|
---|
478 | //-- post processing
|
---|
479 | VssRayContainer postProcessSamples;
|
---|
480 |
|
---|
481 | //-- construction rays
|
---|
482 | CastPassSamples(mPostProcessSamples,
|
---|
483 | mSamplingType,
|
---|
484 | postProcessSamples);
|
---|
485 |
|
---|
486 |
|
---|
487 | // stats before post processing (i.e., merge)
|
---|
488 | EvaluateViewCellsStats();
|
---|
489 | Debug << "\noriginal view cell partition before post process:\n" << mCurrentViewCellsStats << endl;
|
---|
490 |
|
---|
491 | mRenderer->RenderScene();
|
---|
492 | SimulationStatistics ss;
|
---|
493 | dynamic_cast<RenderSimulator *>(mRenderer)->GetStatistics(ss);
|
---|
494 |
|
---|
495 | Debug << ss << endl;
|
---|
496 |
|
---|
497 |
|
---|
498 |
|
---|
499 | cout << "starting post processing and visualization" << endl;
|
---|
500 |
|
---|
501 |
|
---|
502 | // store view cells for postprocessing
|
---|
503 | const bool storeViewCells = true;
|
---|
504 |
|
---|
505 |
|
---|
506 | if (SAMPLE_AFTER_SUBDIVISION)
|
---|
507 | ComputeSampleContributions(postProcessSamples, true, storeViewCells);
|
---|
508 |
|
---|
509 | //-- post processing (e.g.,merging) of the view cells
|
---|
510 | PostProcess(preprocessor->mObjects, postProcessSamples);
|
---|
511 |
|
---|
512 | cout << "time needed for post processing (merge) step: "
|
---|
513 | << TimeDiff(startTime, GetTime()) *1e-3 << " secs" << endl;
|
---|
514 |
|
---|
515 | Debug << "time needed for post processing (merge) step: "
|
---|
516 | << TimeDiff(startTime, GetTime()) *1e-3 << " secs" << endl;
|
---|
517 |
|
---|
518 | // only for debugging purpose
|
---|
519 | if (TEST_EMPTY_VIEW_CELLS)
|
---|
520 | CollectEmptyViewCells();
|
---|
521 |
|
---|
522 | // evaluation of the paritition, i.e., a number of new samples are cast
|
---|
523 | if (mEvaluateViewCells)
|
---|
524 | {
|
---|
525 | EvalViewCellPartition(preprocessor);
|
---|
526 | }
|
---|
527 |
|
---|
528 | //-- visualization
|
---|
529 | if (mShowVisualization)
|
---|
530 | {
|
---|
531 | VssRayContainer visualizationSamples;
|
---|
532 |
|
---|
533 | //-- construction rays => we use uniform samples for this
|
---|
534 | CastPassSamples(mVisualizationSamples,
|
---|
535 | Preprocessor::DIRECTION_BASED_DISTRIBUTION,
|
---|
536 | visualizationSamples);
|
---|
537 |
|
---|
538 | if (SAMPLE_AFTER_SUBDIVISION)
|
---|
539 | ComputeSampleContributions(visualizationSamples, true, storeViewCells);
|
---|
540 |
|
---|
541 | // different visualizations
|
---|
542 | Visualize(preprocessor->mObjects, visualizationSamples);
|
---|
543 |
|
---|
544 | disposeRays(visualizationSamples, outRays);
|
---|
545 | }
|
---|
546 |
|
---|
547 | return numSamples;
|
---|
548 | }
|
---|
549 |
|
---|
550 |
|
---|
551 | void ViewCellsManager::EvalViewCellHistogram(const string filename,
|
---|
552 | const int nViewCells)
|
---|
553 | {
|
---|
554 | std::ofstream outstream;
|
---|
555 | outstream.open(filename.c_str());
|
---|
556 |
|
---|
557 | ViewCellContainer viewCells;
|
---|
558 | mViewCellsTree->CollectBestViewCellSet(viewCells, nViewCells);
|
---|
559 |
|
---|
560 | float maxRenderCost, minRenderCost;
|
---|
561 |
|
---|
562 | // sort by render cost
|
---|
563 | sort(viewCells.begin(), viewCells.end(), ViewCell::SmallerRenderCost);
|
---|
564 |
|
---|
565 | minRenderCost = viewCells.front()->GetRenderCost();
|
---|
566 | maxRenderCost = viewCells.back()->GetRenderCost();
|
---|
567 |
|
---|
568 | Debug << "histogram minrc: " << minRenderCost << " maxrc: " << maxRenderCost << endl;
|
---|
569 |
|
---|
570 | const int intervals = min(50, (int)viewCells.size());
|
---|
571 |
|
---|
572 | const float range = maxRenderCost - minRenderCost;
|
---|
573 | const float stepSize = range / (float)intervals;
|
---|
574 |
|
---|
575 | float currentRenderCost = minRenderCost;//(int)ceil(minRenderCost);
|
---|
576 |
|
---|
577 | const float totalRenderCost = mViewCellsTree->GetRoot()->GetRenderCost();
|
---|
578 | const float totalVol = GetViewSpaceBox().GetVolume();
|
---|
579 | //const float totalVol = mViewCellsTree->GetRoot()->GetVolume();
|
---|
580 |
|
---|
581 | //float vol = 0;
|
---|
582 | //int smallerCost = 0;
|
---|
583 | int j = 0;
|
---|
584 | int i = 0;
|
---|
585 |
|
---|
586 | ViewCellContainer::const_iterator it = viewCells.begin(), it_end = viewCells.end();
|
---|
587 |
|
---|
588 | // count for integral
|
---|
589 | float volSum = 0;
|
---|
590 | int smallerCostSum = 0;
|
---|
591 |
|
---|
592 | // note can skip computations for view cells already evaluated and delete them from vector ...
|
---|
593 | while (1)
|
---|
594 | {
|
---|
595 | // count for histogram value
|
---|
596 | float volDif = 0;
|
---|
597 | int smallerCostDif = 0;
|
---|
598 |
|
---|
599 | while ((i < (int)viewCells.size()) && (viewCells[i]->GetRenderCost() < currentRenderCost))
|
---|
600 | {
|
---|
601 | volSum += viewCells[i]->GetVolume();
|
---|
602 | volDif += viewCells[i]->GetVolume();
|
---|
603 |
|
---|
604 | ++ i;
|
---|
605 | ++ smallerCostSum;
|
---|
606 | ++ smallerCostDif;
|
---|
607 | }
|
---|
608 |
|
---|
609 | if ((i >= (int)viewCells.size()) || (currentRenderCost >= maxRenderCost))
|
---|
610 | break;
|
---|
611 |
|
---|
612 | const float rcRatio = currentRenderCost / maxRenderCost;
|
---|
613 | const float volRatioSum = volSum / totalVol;
|
---|
614 | const float volRatioDif = volDif / totalVol;
|
---|
615 |
|
---|
616 | outstream << "#Pass\n" << j << endl;
|
---|
617 | outstream << "#RenderCostRatio\n" << rcRatio << endl;
|
---|
618 | outstream << "#WeightedCost\n" << currentRenderCost / totalVol << endl;
|
---|
619 | outstream << "#ViewCellsDif\n" << smallerCostDif << endl;
|
---|
620 | outstream << "#ViewCellsSum\n" << smallerCostSum << endl;
|
---|
621 | outstream << "#VolumeDif\n" << volRatioDif << endl << endl;
|
---|
622 | outstream << "#VolumeSum\n" << volRatioSum << endl << endl;
|
---|
623 |
|
---|
624 | // increase current render cost
|
---|
625 | currentRenderCost += stepSize;
|
---|
626 | ++ j;
|
---|
627 | }
|
---|
628 |
|
---|
629 | outstream.close();
|
---|
630 | }
|
---|
631 |
|
---|
632 |
|
---|
633 | void ViewCellsManager::EvalViewCellHistogramForPvsSize(const string filename,
|
---|
634 | const int nViewCells)
|
---|
635 | {
|
---|
636 | std::ofstream outstream;
|
---|
637 | outstream.open(filename.c_str());
|
---|
638 |
|
---|
639 | ViewCellContainer viewCells;
|
---|
640 | mViewCellsTree->CollectBestViewCellSet(viewCells, nViewCells);
|
---|
641 |
|
---|
642 | int maxPvsSize, minPvsSize;
|
---|
643 |
|
---|
644 | // sort by render cost
|
---|
645 | sort(viewCells.begin(), viewCells.end(), ViewCell::SmallerPvs);
|
---|
646 |
|
---|
647 | minPvsSize = viewCells.front()->GetPvs().GetSize();
|
---|
648 | maxPvsSize = viewCells.back()->GetPvs().GetSize();
|
---|
649 | minPvsSize = 0;
|
---|
650 | maxPvsSize = 1200;
|
---|
651 | minPvsSize = 0;
|
---|
652 | maxPvsSize = 1200;
|
---|
653 |
|
---|
654 | Debug << "histogram minpvssize: " << minPvsSize << " maxpvssize: " << maxPvsSize << endl;
|
---|
655 |
|
---|
656 | const int intervals = min(20, (int)viewCells.size());
|
---|
657 | const int range = maxPvsSize - minPvsSize;
|
---|
658 | int stepSize = range / intervals;
|
---|
659 |
|
---|
660 |
|
---|
661 | if (!stepSize) stepSize = 1;
|
---|
662 | Debug << "stepsize: " << stepSize << endl;
|
---|
663 | cout << "stepsize: " << stepSize << endl;
|
---|
664 |
|
---|
665 | const float totalRenderCost = mViewCellsTree->GetRoot()->GetRenderCost();
|
---|
666 | const float totalVol = GetViewSpaceBox().GetVolume();
|
---|
667 |
|
---|
668 | int currentPvsSize = minPvsSize;//(int)ceil(minRenderCost);
|
---|
669 |
|
---|
670 | //float vol = 0;
|
---|
671 | int i = 0;
|
---|
672 | int j = 0;
|
---|
673 |
|
---|
674 | float volSum = 0;
|
---|
675 | int smallerSum = 0;
|
---|
676 |
|
---|
677 | ViewCellContainer::const_iterator it = viewCells.begin(), it_end = viewCells.end();
|
---|
678 |
|
---|
679 | while (1)
|
---|
680 | {
|
---|
681 | float volDif = 0;
|
---|
682 | int smallerDif = 0;
|
---|
683 |
|
---|
684 | while ((i < (int)viewCells.size()) && (viewCells[i]->GetPvs().GetSize() < currentPvsSize))
|
---|
685 | {
|
---|
686 | volDif += viewCells[i]->GetVolume();
|
---|
687 | volSum += viewCells[i]->GetVolume();
|
---|
688 | ++ i;
|
---|
689 | ++ smallerDif;
|
---|
690 | ++ smallerSum;
|
---|
691 | }
|
---|
692 |
|
---|
693 | //if (i < (int)viewCells.size())
|
---|
694 | // Debug << "new pvs size increase: " << viewCells[i]->GetPvs().GetSize() << " " << currentPvsSize << endl;
|
---|
695 |
|
---|
696 | if ((i >= (int)viewCells.size()) || (currentPvsSize >= maxPvsSize))
|
---|
697 | break;
|
---|
698 |
|
---|
699 | const float volRatioDif = volDif / totalVol;
|
---|
700 | const float volRatioSum = volSum / totalVol;
|
---|
701 |
|
---|
702 | outstream << "#Pass\n" << j ++ << endl;
|
---|
703 | outstream << "#Pvs\n" << currentPvsSize << endl;
|
---|
704 | outstream << "#ViewCellsDif\n" << smallerDif << endl;
|
---|
705 | outstream << "#ViewCellsSum\n" << smallerSum << endl;
|
---|
706 | outstream << "#VolumeDif\n" << volRatioDif << endl << endl;
|
---|
707 | outstream << "#VolumeSum\n" << volRatioSum << endl << endl;
|
---|
708 |
|
---|
709 | // increase current pvs size
|
---|
710 | currentPvsSize += stepSize;
|
---|
711 | }
|
---|
712 | outstream.close();
|
---|
713 | }
|
---|
714 |
|
---|
715 |
|
---|
716 | void ViewCellsManager::EvalViewCellPartition(Preprocessor *preprocessor)
|
---|
717 | {
|
---|
718 | int samplesPerPass;
|
---|
719 | int numSamples;
|
---|
720 | int castSamples = 0;
|
---|
721 |
|
---|
722 | char s[64];
|
---|
723 |
|
---|
724 | mEnvironment->GetIntValue("ViewCells.Evaluation.samplesPerPass", samplesPerPass);
|
---|
725 | mEnvironment->GetIntValue("ViewCells.Evaluation.samples", numSamples);
|
---|
726 |
|
---|
727 | char statsPrefix[100];
|
---|
728 | mEnvironment->GetStringValue("ViewCells.Evaluation.statsPrefix", statsPrefix);
|
---|
729 |
|
---|
730 | Debug << "view cell evaluation samples per pass: " << samplesPerPass << endl;
|
---|
731 | Debug << "view cell evaluation samples: " << numSamples << endl;
|
---|
732 | Debug << "view cell stats prefix: " << statsPrefix << endl;
|
---|
733 |
|
---|
734 | //VssRayContainer outRays;
|
---|
735 | // should directional sampling be used?
|
---|
736 | bool dirSamples = (mEvaluationSamplingType == Preprocessor::DIRECTION_BASED_DISTRIBUTION);
|
---|
737 |
|
---|
738 |
|
---|
739 | /*ViewCellContainer leaves;
|
---|
740 | mViewCellsTree->CollectLeaves(mViewCellsTree->GetRoot(), leaves);
|
---|
741 | */
|
---|
742 | cout << "reseting pvs ... ";
|
---|
743 |
|
---|
744 |
|
---|
745 | bool startFromZero = true;
|
---|
746 |
|
---|
747 | // reset pvs and start over from zero
|
---|
748 | if (startFromZero)
|
---|
749 | {
|
---|
750 | mViewCellsTree->ResetPvs();
|
---|
751 | }
|
---|
752 | else // statistics without addidtional samples
|
---|
753 | {
|
---|
754 | cout << "compute new statistics ... ";
|
---|
755 | sprintf(s, "-%09d-eval.log", castSamples);
|
---|
756 | string fName = string(statsPrefix) + string(s);
|
---|
757 |
|
---|
758 | mViewCellsTree->ExportStats(fName);
|
---|
759 | cout << "finished" << endl;
|
---|
760 | }
|
---|
761 |
|
---|
762 | cout << "finished" << endl;
|
---|
763 |
|
---|
764 | cout << "Evaluating view cell partition" << endl;
|
---|
765 |
|
---|
766 | while (castSamples < numSamples)
|
---|
767 | {
|
---|
768 | VssRayContainer evaluationSamples;
|
---|
769 |
|
---|
770 | const int samplingType = mEvaluationSamplingType;
|
---|
771 | /* dirSamples ?
|
---|
772 | Preprocessor::DIRECTION_BASED_DISTRIBUTION :
|
---|
773 | Preprocessor::SPATIAL_BOX_BASED_DISTRIBUTION;
|
---|
774 | */
|
---|
775 | //-- construction rays => we use uniform samples for this
|
---|
776 | cout << "casting " << samplesPerPass << " samples " << endl;
|
---|
777 | CastPassSamples(samplesPerPass, samplingType, evaluationSamples);
|
---|
778 |
|
---|
779 | castSamples += samplesPerPass;
|
---|
780 |
|
---|
781 | cout << "computing sample contributions of " << (int)evaluationSamples.size()
|
---|
782 | << " samples " << endl;
|
---|
783 |
|
---|
784 | ComputeSampleContributions(evaluationSamples, true, false);
|
---|
785 |
|
---|
786 | cout << "compute new statistics ... ";
|
---|
787 |
|
---|
788 | /*Debug << "*******+" << endl;
|
---|
789 | float overall = 0;
|
---|
790 | stable_sort(leaves.begin(), leaves.end(), ViewCell::SmallerPvs);
|
---|
791 | for (int i = 0; i < leaves.size(); ++ i)
|
---|
792 | {
|
---|
793 | overall += leaves[i]->GetPvs().GetSize();
|
---|
794 | Debug << "i " << i << " !size: " << leaves[i]->GetPvs().GetSize() << " vol: " << leaves[i]->GetVolume() << " overall " << overall << endl;
|
---|
795 |
|
---|
796 | }
|
---|
797 | */
|
---|
798 |
|
---|
799 | //-- propagate pvs or pvs size information
|
---|
800 | ObjectPvs pvs;
|
---|
801 | UpdatePvsForEvaluation(mViewCellsTree->GetRoot(), pvs);
|
---|
802 |
|
---|
803 |
|
---|
804 | //-- output stats
|
---|
805 | sprintf(s, "-%09d-eval.log", castSamples);
|
---|
806 | string fileName = string(statsPrefix) + string(s);
|
---|
807 |
|
---|
808 | mViewCellsTree->ExportStats(fileName);
|
---|
809 |
|
---|
810 | cout << "finished" << endl;
|
---|
811 |
|
---|
812 | disposeRays(evaluationSamples, NULL);
|
---|
813 | }
|
---|
814 |
|
---|
815 | bool useHisto;
|
---|
816 | int histoPasses;
|
---|
817 |
|
---|
818 | mEnvironment->GetBoolValue("ViewCells.Evaluation.histogram", useHisto);
|
---|
819 | mEnvironment->GetIntValue("ViewCells.Evaluation.histoPasses", histoPasses);
|
---|
820 |
|
---|
821 | const int numLeaves = mViewCellsTree->GetNumInitialViewCells(mViewCellsTree->GetRoot());
|
---|
822 |
|
---|
823 | //Debug << "number of leaves: " << numLeaves << endl;
|
---|
824 | //cout << "number of leaves: " << numLeaves << endl;
|
---|
825 |
|
---|
826 | if (useHisto)
|
---|
827 | {
|
---|
828 | // evaluate view cells in a histogram
|
---|
829 | char s[64];
|
---|
830 | #if 0
|
---|
831 | for (int passes = 1; passes <= histoPasses; ++ passes)
|
---|
832 | {
|
---|
833 | int n = numLeaves * passes / histoPasses;
|
---|
834 |
|
---|
835 | cout << "computing histogram for " << n << " view cells" << endl;
|
---|
836 |
|
---|
837 | //-- evaluate histogram for render cost
|
---|
838 | sprintf(s, "-%09d-histo.log", n);
|
---|
839 | string filename = string(statsPrefix) + string(s);
|
---|
840 |
|
---|
841 | EvalViewCellHistogram(filename, n);
|
---|
842 |
|
---|
843 | //////////////////////////////////////////
|
---|
844 | // --evaluate histogram for pvs size
|
---|
845 |
|
---|
846 | cout << "computing pvs histogram for " << n << " view cells" << endl;
|
---|
847 |
|
---|
848 | sprintf(s, "-%09d-histo-pvs.log", n);
|
---|
849 | filename = string(statsPrefix) + string(s);
|
---|
850 |
|
---|
851 | EvalViewCellHistogramForPvsSize(filename, n);
|
---|
852 | }
|
---|
853 | #else
|
---|
854 | for (int pass = histoPasses; pass <= numLeaves; pass += histoPasses)
|
---|
855 | {
|
---|
856 | cout << "computing histogram for " << pass << " view cells" << endl;
|
---|
857 |
|
---|
858 | //-- evaluate histogram for render cost
|
---|
859 | sprintf(s, "-%09d-histo.log", pass);
|
---|
860 | string filename = string(statsPrefix) + string(s);
|
---|
861 |
|
---|
862 | EvalViewCellHistogram(filename, pass);
|
---|
863 |
|
---|
864 | //////////////////////////////////////////
|
---|
865 | //-- evaluate histogram for pvs size
|
---|
866 |
|
---|
867 | cout << "computing pvs histogram for " << pass << " view cells" << endl;
|
---|
868 |
|
---|
869 | sprintf(s, "-%09d-histo-pvs.log", pass);
|
---|
870 | filename = string(statsPrefix) + string(s);
|
---|
871 |
|
---|
872 | EvalViewCellHistogramForPvsSize(filename, pass);
|
---|
873 | }
|
---|
874 | #endif
|
---|
875 | }
|
---|
876 |
|
---|
877 | // find empty view cells bug
|
---|
878 | if (TEST_EMPTY_VIEW_CELLS)
|
---|
879 | {
|
---|
880 | TestEmptyViewCells(preprocessor->mObjects);
|
---|
881 | }
|
---|
882 | }
|
---|
883 |
|
---|
884 |
|
---|
885 | inline float EvalMergeCost(ViewCell *root, ViewCell *candidate)
|
---|
886 | {
|
---|
887 | return root->GetPvs().GetPvsHomogenity(candidate->GetPvs());
|
---|
888 | }
|
---|
889 |
|
---|
890 |
|
---|
891 | // Returns index of the best view cells of the neighborhood
|
---|
892 | int GetBestViewCellIdx(ViewCell *root, const ViewCellContainer &neighborhood)
|
---|
893 | {
|
---|
894 | int bestViewCellIdx = 0;
|
---|
895 |
|
---|
896 | float mergeCost = Limits::Infinity;
|
---|
897 | int i = 0;
|
---|
898 |
|
---|
899 | ViewCellContainer::const_iterator vit, vit_end = neighborhood.end();
|
---|
900 |
|
---|
901 | for (vit = neighborhood.begin(); vit != vit_end; ++ vit, ++ i)
|
---|
902 | {
|
---|
903 | const float mc = EvalMergeCost(root, *vit);
|
---|
904 |
|
---|
905 | if (mc < mergeCost)
|
---|
906 | {
|
---|
907 | mergeCost = mc;
|
---|
908 | bestViewCellIdx = i;
|
---|
909 | }
|
---|
910 | }
|
---|
911 |
|
---|
912 | return bestViewCellIdx;
|
---|
913 | }
|
---|
914 |
|
---|
915 |
|
---|
916 | void ViewCellsManager::SetMaxFilterSize(const int size)
|
---|
917 | {
|
---|
918 | mMaxFilterSize = size;
|
---|
919 | }
|
---|
920 |
|
---|
921 |
|
---|
922 | float ViewCellsManager::EvalRenderCost(Intersectable *obj) const
|
---|
923 | {
|
---|
924 | switch (mRenderCostEvaluationType)
|
---|
925 | {
|
---|
926 | case PER_OBJECT:
|
---|
927 | //cout << "perobject" << endl;
|
---|
928 | return 1.0f;
|
---|
929 |
|
---|
930 | case PER_TRIANGLE:
|
---|
931 | {cout << "pertriangle" << endl;
|
---|
932 | // HACK
|
---|
933 | MeshInstance *mi = dynamic_cast<MeshInstance *>(obj);
|
---|
934 |
|
---|
935 | // HACK: assume meshes are triangles
|
---|
936 | if (mi->GetMesh())
|
---|
937 | {
|
---|
938 | return mi->GetMesh()->mFaces.size();
|
---|
939 | }
|
---|
940 | }
|
---|
941 | default:
|
---|
942 | cout << "default" << endl;
|
---|
943 | return 1.0f;
|
---|
944 | }
|
---|
945 |
|
---|
946 | // should not come here
|
---|
947 | return 0.0f;
|
---|
948 | }
|
---|
949 |
|
---|
950 |
|
---|
951 | ViewCell *ViewCellsManager::ConstructLocalMergeTree(ViewCell *currentViewCell,
|
---|
952 | const ViewCellContainer &viewCells)
|
---|
953 | {
|
---|
954 | ViewCell *root = currentViewCell;
|
---|
955 | ViewCellContainer neighborhood = viewCells;
|
---|
956 |
|
---|
957 | ViewCellContainer::const_iterator it, it_end = neighborhood.end();
|
---|
958 |
|
---|
959 | const int n = min(mMaxFilterSize, (int)neighborhood.size());
|
---|
960 | //-- use priority queue to merge leaf pairs
|
---|
961 |
|
---|
962 | //cout << "neighborhood: " << neighborhood.size() << endl;
|
---|
963 | //const float maxAvgCost = 350;
|
---|
964 | for (int nMergedViewCells = 0; nMergedViewCells < n; ++ nMergedViewCells)
|
---|
965 | {
|
---|
966 | const int bestViewCellIdx = GetBestViewCellIdx(root, neighborhood);
|
---|
967 |
|
---|
968 | ViewCell *bestViewCell = neighborhood[bestViewCellIdx];
|
---|
969 |
|
---|
970 | // remove from vector
|
---|
971 | swap(neighborhood[bestViewCellIdx], neighborhood.back());
|
---|
972 | neighborhood.pop_back();
|
---|
973 |
|
---|
974 | // cout << "vc idx: " << bestViewCellIdx << endl;
|
---|
975 | if (!bestViewCell || !root)
|
---|
976 | cout << "warning!!" << endl;
|
---|
977 |
|
---|
978 | // create new root of the hierarchy
|
---|
979 | root = MergeViewCells(root, bestViewCell);
|
---|
980 | }
|
---|
981 |
|
---|
982 | return root;
|
---|
983 | }
|
---|
984 |
|
---|
985 |
|
---|
986 | struct SortableViewCellEntry {
|
---|
987 |
|
---|
988 | SortableViewCellEntry() {}
|
---|
989 | SortableViewCellEntry(const float v, ViewCell *cell):mValue(v), mViewCell(cell) {}
|
---|
990 |
|
---|
991 | float mValue;
|
---|
992 | ViewCell *mViewCell;
|
---|
993 |
|
---|
994 | friend bool operator<(const SortableViewCellEntry &a, const SortableViewCellEntry &b) {
|
---|
995 | return a.mValue < b.mValue;
|
---|
996 | }
|
---|
997 | };
|
---|
998 |
|
---|
999 | ViewCell *
|
---|
1000 | ViewCellsManager::ConstructLocalMergeTree2(ViewCell *currentViewCell,
|
---|
1001 | const ViewCellContainer &viewCells)
|
---|
1002 | {
|
---|
1003 |
|
---|
1004 | vector<SortableViewCellEntry> neighborhood(viewCells.size());
|
---|
1005 | int i, j;
|
---|
1006 | for (i = 0, j = 0; i < viewCells.size(); i++) {
|
---|
1007 | if (viewCells[i] != currentViewCell)
|
---|
1008 | neighborhood[j++] = SortableViewCellEntry(
|
---|
1009 | EvalMergeCost(currentViewCell, viewCells[i]),
|
---|
1010 | viewCells[i]);
|
---|
1011 | }
|
---|
1012 | neighborhood.resize(j);
|
---|
1013 |
|
---|
1014 | sort(neighborhood.begin(), neighborhood.end());
|
---|
1015 |
|
---|
1016 | ViewCell *root = currentViewCell;
|
---|
1017 |
|
---|
1018 | vector<SortableViewCellEntry>::const_iterator it, it_end = neighborhood.end();
|
---|
1019 |
|
---|
1020 | const int n = min(mMaxFilterSize, (int)neighborhood.size());
|
---|
1021 | //-- use priority queue to merge leaf pairs
|
---|
1022 |
|
---|
1023 | //cout << "neighborhood: " << neighborhood.size() << endl;
|
---|
1024 | for (int nMergedViewCells = 0; nMergedViewCells < n; ++ nMergedViewCells)
|
---|
1025 | {
|
---|
1026 | ViewCell *bestViewCell = neighborhood[nMergedViewCells].mViewCell;
|
---|
1027 | //cout <<nMergedViewCells<<":"<<"homogenity=" <<neighborhood[nMergedViewCells].mValue<<endl;
|
---|
1028 | // create new root of the hierarchy
|
---|
1029 | root = MergeViewCells(root, bestViewCell);
|
---|
1030 | // set negative cost so that this view cell gets deleted
|
---|
1031 | root->SetMergeCost(-1.0f);
|
---|
1032 | }
|
---|
1033 |
|
---|
1034 | return root;
|
---|
1035 | }
|
---|
1036 |
|
---|
1037 | void
|
---|
1038 | ViewCellsManager::DeleteLocalMergeTree(ViewCell *vc
|
---|
1039 | ) const
|
---|
1040 | {
|
---|
1041 | if (!vc->IsLeaf() && vc->GetMergeCost() < 0.0f) {
|
---|
1042 | ViewCellInterior *vci = (ViewCellInterior *) vc;
|
---|
1043 | ViewCellContainer::const_iterator it, it_end = vci->mChildren.end();
|
---|
1044 |
|
---|
1045 | for (it = vci->mChildren.begin(); it != it_end; ++ it)
|
---|
1046 | DeleteLocalMergeTree(*it);
|
---|
1047 | vci->mChildren.clear();
|
---|
1048 | delete vci;
|
---|
1049 | }
|
---|
1050 | }
|
---|
1051 |
|
---|
1052 | bool ViewCellsManager::CheckValidity(ViewCell *vc,
|
---|
1053 | int minPvsSize,
|
---|
1054 | int maxPvsSize) const
|
---|
1055 | {
|
---|
1056 |
|
---|
1057 | if ((vc->GetPvs().GetSize() > maxPvsSize) ||
|
---|
1058 | (vc->GetPvs().GetSize() < minPvsSize))
|
---|
1059 | {
|
---|
1060 | return false;
|
---|
1061 | }
|
---|
1062 |
|
---|
1063 | return true;
|
---|
1064 | }
|
---|
1065 |
|
---|
1066 |
|
---|
1067 | bool ViewCellsManager::EqualToSpatialNode(ViewCell *viewCell) const
|
---|
1068 | {
|
---|
1069 | return false;
|
---|
1070 | }
|
---|
1071 |
|
---|
1072 | int ViewCellsManager::ComputeBoxIntersections(const AxisAlignedBox3 &box,
|
---|
1073 | ViewCellContainer &viewCells) const
|
---|
1074 | {
|
---|
1075 | return 0;
|
---|
1076 | };
|
---|
1077 |
|
---|
1078 | AxisAlignedBox3 ViewCellsManager::GetFilterBBox(const Vector3 &viewPoint,
|
---|
1079 | const float width) const
|
---|
1080 | {
|
---|
1081 | float w = Magnitude(mViewSpaceBox.Size())*width;
|
---|
1082 | Vector3 min = viewPoint - w * 0.5f;
|
---|
1083 | Vector3 max = viewPoint + w * 0.5f;
|
---|
1084 |
|
---|
1085 | return AxisAlignedBox3(min, max);
|
---|
1086 | }
|
---|
1087 |
|
---|
1088 |
|
---|
1089 | void ViewCellsManager::GetPrVS(const Vector3 &viewPoint,
|
---|
1090 | PrVs &prvs,
|
---|
1091 | const float filterWidth)
|
---|
1092 | {
|
---|
1093 | const AxisAlignedBox3 box = GetFilterBBox(viewPoint, filterWidth);
|
---|
1094 |
|
---|
1095 | ViewCell *currentViewCell = GetViewCell(viewPoint);
|
---|
1096 |
|
---|
1097 | if (currentViewCell) {
|
---|
1098 | ViewCellContainer viewCells;
|
---|
1099 | ComputeBoxIntersections(box, viewCells);
|
---|
1100 |
|
---|
1101 | ViewCell *root = ConstructLocalMergeTree2(currentViewCell, viewCells);
|
---|
1102 | prvs.mViewCell = root;
|
---|
1103 | } else
|
---|
1104 | prvs.mViewCell = NULL;
|
---|
1105 | //prvs.mPvs = root->GetPvs();
|
---|
1106 | }
|
---|
1107 |
|
---|
1108 |
|
---|
1109 | bool ViewCellsManager::ViewCellsTreeConstructed() const
|
---|
1110 | {
|
---|
1111 | return mViewCellsTree->GetRoot();
|
---|
1112 | }
|
---|
1113 |
|
---|
1114 |
|
---|
1115 | void ViewCellsManager::SetValidity(ViewCell *vc,
|
---|
1116 | int minPvs,
|
---|
1117 | int maxPvs) const
|
---|
1118 | {
|
---|
1119 | vc->SetValid(CheckValidity(vc, minPvs, maxPvs));
|
---|
1120 | }
|
---|
1121 |
|
---|
1122 |
|
---|
1123 | void
|
---|
1124 | ViewCellsManager::SetValidity(
|
---|
1125 | int minPvsSize,
|
---|
1126 | int maxPvsSize) const
|
---|
1127 | {
|
---|
1128 | ViewCellContainer::const_iterator it, it_end = mViewCells.end();
|
---|
1129 |
|
---|
1130 | for (it = mViewCells.begin(); it != it_end; ++ it) {
|
---|
1131 | SetValidity(*it, minPvsSize, maxPvsSize);
|
---|
1132 | }
|
---|
1133 | }
|
---|
1134 |
|
---|
1135 | void
|
---|
1136 | ViewCellsManager::SetValidityPercentage(
|
---|
1137 | const float minValid,
|
---|
1138 | const float maxValid
|
---|
1139 | )
|
---|
1140 | {
|
---|
1141 | sort(mViewCells.begin(), mViewCells.end(), ViewCell::SmallerPvs);
|
---|
1142 |
|
---|
1143 | int start = mViewCells.size()*minValid;
|
---|
1144 | int end = mViewCells.size()*maxValid;
|
---|
1145 |
|
---|
1146 | for (int i=0; i < mViewCells.size(); i++)
|
---|
1147 | mViewCells[i]->SetValid(i >= start && i <= end);
|
---|
1148 | }
|
---|
1149 |
|
---|
1150 | int
|
---|
1151 | ViewCellsManager::CountValidViewcells() const
|
---|
1152 | {
|
---|
1153 | ViewCellContainer::const_iterator it, it_end = mViewCells.end();
|
---|
1154 | int valid = 0;
|
---|
1155 | for (it = mViewCells.begin(); it != it_end; ++ it) {
|
---|
1156 | if ((*it)->GetValid())
|
---|
1157 | valid ++;
|
---|
1158 | }
|
---|
1159 | return valid;
|
---|
1160 | }
|
---|
1161 |
|
---|
1162 |
|
---|
1163 | bool ViewCellsManager::LoadViewCellsGeometry(const string filename)
|
---|
1164 | {
|
---|
1165 | X3dParser parser;
|
---|
1166 |
|
---|
1167 | mEnvironment->GetFloatValue("ViewCells.height", parser.mViewCellHeight);
|
---|
1168 |
|
---|
1169 | bool success = parser.ParseFile(filename, *this);
|
---|
1170 | Debug << (int)mViewCells.size() << " view cells loaded" << endl;
|
---|
1171 |
|
---|
1172 | return success;
|
---|
1173 | }
|
---|
1174 |
|
---|
1175 |
|
---|
1176 | bool ViewCellsManager::GetViewPoint(Vector3 &viewPoint) const
|
---|
1177 | {
|
---|
1178 | viewPoint = mViewSpaceBox.GetRandomPoint();
|
---|
1179 |
|
---|
1180 | return true;
|
---|
1181 | }
|
---|
1182 |
|
---|
1183 |
|
---|
1184 | float ViewCellsManager::GetViewSpaceVolume()
|
---|
1185 | {
|
---|
1186 | return mViewSpaceBox.GetVolume() * (2.0f * sqr((float)M_PI));
|
---|
1187 | }
|
---|
1188 |
|
---|
1189 |
|
---|
1190 | bool ViewCellsManager::ViewPointValid(const Vector3 &viewPoint) const
|
---|
1191 | {
|
---|
1192 | if (!ViewCellsConstructed())
|
---|
1193 | return mViewSpaceBox.IsInside(viewPoint);
|
---|
1194 | else
|
---|
1195 | {
|
---|
1196 | if (!mViewSpaceBox.IsInside(viewPoint))
|
---|
1197 | return false;
|
---|
1198 |
|
---|
1199 | ViewCell *viewcell = GetViewCell(viewPoint);
|
---|
1200 |
|
---|
1201 | if (!viewcell || !viewcell->GetValid())
|
---|
1202 | return false;
|
---|
1203 | }
|
---|
1204 |
|
---|
1205 | return true;
|
---|
1206 | }
|
---|
1207 |
|
---|
1208 |
|
---|
1209 | float
|
---|
1210 | ViewCellsManager::ComputeSampleContributions(const VssRayContainer &rays,
|
---|
1211 | const bool addRays,
|
---|
1212 | const bool storeViewCells
|
---|
1213 | )
|
---|
1214 | {
|
---|
1215 | // view cells not yet constructed
|
---|
1216 | if (!ViewCellsConstructed())
|
---|
1217 | return 0.0f;
|
---|
1218 |
|
---|
1219 | VssRayContainer::const_iterator it, it_end = rays.end();
|
---|
1220 |
|
---|
1221 | float sum = 0.0f;
|
---|
1222 | for (it = rays.begin(); it != it_end; ++ it)
|
---|
1223 | {
|
---|
1224 | sum += ComputeSampleContributions(*(*it), addRays, storeViewCells);
|
---|
1225 | //ComputeSampleContributions(*(*it), addRays);
|
---|
1226 | // sum += (*it)->mPvsContribution;
|
---|
1227 | }
|
---|
1228 |
|
---|
1229 | return sum;
|
---|
1230 | }
|
---|
1231 |
|
---|
1232 |
|
---|
1233 | void ViewCellsManager::EvaluateViewCellsStats()
|
---|
1234 | {
|
---|
1235 | mCurrentViewCellsStats.Reset();
|
---|
1236 |
|
---|
1237 | ViewCellContainer::const_iterator it, it_end = mViewCells.end();
|
---|
1238 |
|
---|
1239 | for (it = mViewCells.begin(); it != it_end; ++ it)
|
---|
1240 | {
|
---|
1241 | mViewCellsTree->UpdateViewCellsStats(*it, mCurrentViewCellsStats);
|
---|
1242 | }
|
---|
1243 | }
|
---|
1244 |
|
---|
1245 |
|
---|
1246 | void ViewCellsManager::EvaluateRenderStatistics(float &totalRenderCost,
|
---|
1247 | float &expectedRenderCost,
|
---|
1248 | float &deviation,
|
---|
1249 | float &variance,
|
---|
1250 | int &totalPvs,
|
---|
1251 | float &avgRenderCost)
|
---|
1252 | {
|
---|
1253 | ViewCellContainer::const_iterator it, it_end = mViewCells.end();
|
---|
1254 |
|
---|
1255 |
|
---|
1256 | //-- compute expected value
|
---|
1257 |
|
---|
1258 | totalRenderCost = 0;
|
---|
1259 | totalPvs = 0;
|
---|
1260 |
|
---|
1261 | for (it = mViewCells.begin(); it != it_end; ++ it)
|
---|
1262 | {
|
---|
1263 | ViewCell *vc = *it;
|
---|
1264 | totalRenderCost += vc->GetPvs().GetSize() * vc->GetVolume();
|
---|
1265 | totalPvs += (int)vc->GetPvs().GetSize();
|
---|
1266 | }
|
---|
1267 |
|
---|
1268 | // normalize with view space box
|
---|
1269 | totalRenderCost /= mViewSpaceBox.GetVolume();
|
---|
1270 | expectedRenderCost = totalRenderCost / (float)mViewCells.size();
|
---|
1271 | avgRenderCost = totalPvs / (float)mViewCells.size();
|
---|
1272 |
|
---|
1273 |
|
---|
1274 | //-- compute standard defiation
|
---|
1275 | variance = 0;
|
---|
1276 | deviation = 0;
|
---|
1277 |
|
---|
1278 | for (it = mViewCells.begin(); it != it_end; ++ it)
|
---|
1279 | {
|
---|
1280 | ViewCell *vc = *it;
|
---|
1281 |
|
---|
1282 | float renderCost = vc->GetPvs().GetSize() * vc->GetVolume();
|
---|
1283 | float dev;
|
---|
1284 |
|
---|
1285 | if (1)
|
---|
1286 | dev = fabs(avgRenderCost - (float)vc->GetPvs().GetSize());
|
---|
1287 | else
|
---|
1288 | dev = fabs(expectedRenderCost - renderCost);
|
---|
1289 |
|
---|
1290 | deviation += dev;
|
---|
1291 | variance += dev * dev;
|
---|
1292 | }
|
---|
1293 |
|
---|
1294 | variance /= (float)mViewCells.size();
|
---|
1295 | deviation /= (float)mViewCells.size();
|
---|
1296 | }
|
---|
1297 |
|
---|
1298 |
|
---|
1299 |
|
---|
1300 | void ViewCellsManager::AddViewCell(ViewCell *viewCell)
|
---|
1301 | {
|
---|
1302 | mViewCells.push_back(viewCell);
|
---|
1303 | }
|
---|
1304 |
|
---|
1305 |
|
---|
1306 | float ViewCellsManager::GetArea(ViewCell *viewCell) const
|
---|
1307 | {
|
---|
1308 | return viewCell->GetArea();
|
---|
1309 | }
|
---|
1310 |
|
---|
1311 |
|
---|
1312 | float ViewCellsManager::GetVolume(ViewCell *viewCell) const
|
---|
1313 | {
|
---|
1314 | return viewCell->GetVolume();
|
---|
1315 | }
|
---|
1316 |
|
---|
1317 |
|
---|
1318 | void ViewCellsManager::DeriveViewCells(const ObjectContainer &objects,
|
---|
1319 | ViewCellContainer &viewCells,
|
---|
1320 | const int maxViewCells) const
|
---|
1321 | {
|
---|
1322 | // maximal max viewcells
|
---|
1323 | int limit = maxViewCells > 0 ?
|
---|
1324 | Min((int)objects.size(), maxViewCells) : (int)objects.size();
|
---|
1325 |
|
---|
1326 | for (int i = 0; i < limit; ++ i)
|
---|
1327 | {
|
---|
1328 | Intersectable *object = objects[i];
|
---|
1329 |
|
---|
1330 | // extract the mesh instances
|
---|
1331 | if (object->Type() == Intersectable::MESH_INSTANCE)
|
---|
1332 | {
|
---|
1333 | MeshInstance *inst = dynamic_cast<MeshInstance *>(object);
|
---|
1334 |
|
---|
1335 | ViewCell *viewCell = GenerateViewCell(inst->GetMesh());
|
---|
1336 | viewCells.push_back(viewCell);
|
---|
1337 | }
|
---|
1338 | //TODO: transformed meshes
|
---|
1339 | }
|
---|
1340 | }
|
---|
1341 |
|
---|
1342 |
|
---|
1343 | ViewCell *ViewCellsManager::ExtrudeViewCell(const Triangle3 &baseTri,
|
---|
1344 | const float height) const
|
---|
1345 | {
|
---|
1346 | // one mesh per view cell
|
---|
1347 | Mesh *mesh = new Mesh();
|
---|
1348 |
|
---|
1349 | //-- construct prism
|
---|
1350 |
|
---|
1351 | // bottom
|
---|
1352 | mesh->mFaces.push_back(new Face(2,1,0));
|
---|
1353 | // top
|
---|
1354 | mesh->mFaces.push_back(new Face(3,4,5));
|
---|
1355 | // sides
|
---|
1356 | mesh->mFaces.push_back(new Face(1, 4, 3, 0));
|
---|
1357 | mesh->mFaces.push_back(new Face(2, 5, 4, 1));
|
---|
1358 | mesh->mFaces.push_back(new Face(3, 5, 2, 0));
|
---|
1359 |
|
---|
1360 | //--- extrude new vertices for top of prism
|
---|
1361 | Vector3 triNorm = baseTri.GetNormal();
|
---|
1362 |
|
---|
1363 | Triangle3 topTri;
|
---|
1364 |
|
---|
1365 | // add base vertices and calculate top vertices
|
---|
1366 | for (int i = 0; i < 3; ++ i)
|
---|
1367 | mesh->mVertices.push_back(baseTri.mVertices[i]);
|
---|
1368 |
|
---|
1369 | // add top vertices
|
---|
1370 | for (int i = 0; i < 3; ++ i)
|
---|
1371 | mesh->mVertices.push_back(baseTri.mVertices[i] + height * triNorm);
|
---|
1372 |
|
---|
1373 | mesh->Preprocess();
|
---|
1374 |
|
---|
1375 | return GenerateViewCell(mesh);
|
---|
1376 | }
|
---|
1377 |
|
---|
1378 |
|
---|
1379 | void ViewCellsManager::FinalizeViewCells(const bool createMesh)
|
---|
1380 | {
|
---|
1381 | ViewCellContainer::const_iterator it, it_end = mViewCells.end();
|
---|
1382 |
|
---|
1383 | // volume and area of the view cells are recomputed and a view cell mesh is created
|
---|
1384 | for (it = mViewCells.begin(); it != it_end; ++ it)
|
---|
1385 | {
|
---|
1386 | Finalize(*it, createMesh);
|
---|
1387 | }
|
---|
1388 |
|
---|
1389 | mTotalAreaValid = false;
|
---|
1390 | }
|
---|
1391 |
|
---|
1392 |
|
---|
1393 | void ViewCellsManager::Finalize(ViewCell *viewCell, const bool createMesh)
|
---|
1394 | {
|
---|
1395 | // implemented in subclasses
|
---|
1396 | }
|
---|
1397 |
|
---|
1398 | // fast way of merging 2 view cells
|
---|
1399 | ViewCellInterior *ViewCellsManager::MergeViewCells(ViewCell *left, ViewCell *right) const
|
---|
1400 | {
|
---|
1401 | // generate parent view cell
|
---|
1402 | ViewCellInterior *vc = new ViewCellInterior();
|
---|
1403 |
|
---|
1404 | vc->GetPvs().Clear();
|
---|
1405 | vc->GetPvs() = left->GetPvs();
|
---|
1406 |
|
---|
1407 | // merge pvs of right cell
|
---|
1408 | vc->GetPvs().Merge(right->GetPvs());
|
---|
1409 |
|
---|
1410 | //-- merge ray sets
|
---|
1411 | if (0)
|
---|
1412 | {
|
---|
1413 | stable_sort(left->mPiercingRays.begin(), left->mPiercingRays.end());
|
---|
1414 | stable_sort(right->mPiercingRays.begin(), right->mPiercingRays.end());
|
---|
1415 |
|
---|
1416 | std::merge(left->mPiercingRays.begin(), left->mPiercingRays.end(),
|
---|
1417 | right->mPiercingRays.begin(), right->mPiercingRays.end(),
|
---|
1418 | vc->mPiercingRays.begin());
|
---|
1419 | }
|
---|
1420 |
|
---|
1421 | // set only links to child (not from child to parent, maybe not wished!!)
|
---|
1422 | vc->mChildren.push_back(left);
|
---|
1423 | vc->mChildren.push_back(right);
|
---|
1424 |
|
---|
1425 | // update pvs size
|
---|
1426 | vc->mPvsSize = vc->GetPvs().GetSize();
|
---|
1427 | vc->mPvsSizeValid = true;
|
---|
1428 |
|
---|
1429 | return vc;
|
---|
1430 | }
|
---|
1431 |
|
---|
1432 |
|
---|
1433 | ViewCellInterior *ViewCellsManager::MergeViewCells(ViewCellContainer &children) const
|
---|
1434 | {
|
---|
1435 | ViewCellInterior *vc = new ViewCellInterior();
|
---|
1436 |
|
---|
1437 | ViewCellContainer::const_iterator it, it_end = children.end();
|
---|
1438 |
|
---|
1439 | for (it = children.begin(); it != it_end; ++ it)
|
---|
1440 | {
|
---|
1441 | // merge pvs
|
---|
1442 | vc->GetPvs().Merge((*it)->GetPvs());
|
---|
1443 | vc->mChildren.push_back(*it);
|
---|
1444 | }
|
---|
1445 |
|
---|
1446 | return vc;
|
---|
1447 | }
|
---|
1448 |
|
---|
1449 |
|
---|
1450 | void ViewCellsManager::SetRenderer(Renderer *renderer)
|
---|
1451 | {
|
---|
1452 | mRenderer = renderer;
|
---|
1453 | }
|
---|
1454 |
|
---|
1455 |
|
---|
1456 | ViewCellsTree *ViewCellsManager::GetViewCellsTree()
|
---|
1457 | {
|
---|
1458 | return mViewCellsTree;
|
---|
1459 | }
|
---|
1460 |
|
---|
1461 |
|
---|
1462 | void ViewCellsManager::SetVisualizationSamples(const int visSamples)
|
---|
1463 | {
|
---|
1464 | mVisualizationSamples = visSamples;
|
---|
1465 | }
|
---|
1466 |
|
---|
1467 |
|
---|
1468 | void ViewCellsManager::SetConstructionSamples(const int constructionSamples)
|
---|
1469 | {
|
---|
1470 | mConstructionSamples = constructionSamples;
|
---|
1471 | }
|
---|
1472 |
|
---|
1473 |
|
---|
1474 | void ViewCellsManager::SetInitialSamples(const int initialSamples)
|
---|
1475 | {
|
---|
1476 | mInitialSamples = initialSamples;
|
---|
1477 | }
|
---|
1478 |
|
---|
1479 |
|
---|
1480 | void ViewCellsManager::SetPostProcessSamples(const int postProcessSamples)
|
---|
1481 | {
|
---|
1482 | mPostProcessSamples = postProcessSamples;
|
---|
1483 | }
|
---|
1484 |
|
---|
1485 |
|
---|
1486 | int ViewCellsManager::GetVisualizationSamples() const
|
---|
1487 | {
|
---|
1488 | return mVisualizationSamples;
|
---|
1489 | }
|
---|
1490 |
|
---|
1491 |
|
---|
1492 | int ViewCellsManager::GetConstructionSamples() const
|
---|
1493 | {
|
---|
1494 | return mConstructionSamples;
|
---|
1495 | }
|
---|
1496 |
|
---|
1497 |
|
---|
1498 | int ViewCellsManager::GetPostProcessSamples() const
|
---|
1499 | {
|
---|
1500 | return mPostProcessSamples;
|
---|
1501 | }
|
---|
1502 |
|
---|
1503 |
|
---|
1504 | void ViewCellsManager::UpdatePvs()
|
---|
1505 | {
|
---|
1506 | if (mViewCellPvsIsUpdated || !ViewCellsTreeConstructed())
|
---|
1507 | return;
|
---|
1508 |
|
---|
1509 | mViewCellPvsIsUpdated = true;
|
---|
1510 |
|
---|
1511 | ViewCellContainer leaves;
|
---|
1512 | mViewCellsTree->CollectLeaves(mViewCellsTree->GetRoot(), leaves);
|
---|
1513 |
|
---|
1514 | ViewCellContainer::const_iterator it, it_end = leaves.end();
|
---|
1515 |
|
---|
1516 | for (it = leaves.begin(); it != it_end; ++ it)
|
---|
1517 | {
|
---|
1518 | mViewCellsTree->PropagatePvs(*it);
|
---|
1519 | }
|
---|
1520 | }
|
---|
1521 |
|
---|
1522 |
|
---|
1523 | void ViewCellsManager::GetPvsStatistics(PvsStatistics &stat)
|
---|
1524 | {
|
---|
1525 | // update pvs of view cells tree if necessary
|
---|
1526 | UpdatePvs();
|
---|
1527 |
|
---|
1528 | ViewCellContainer::const_iterator it = mViewCells.begin();
|
---|
1529 |
|
---|
1530 | stat.viewcells = 0;
|
---|
1531 | stat.minPvs = 100000000;
|
---|
1532 | stat.maxPvs = 0;
|
---|
1533 | stat.avgPvs = 0.0f;
|
---|
1534 |
|
---|
1535 | for (; it != mViewCells.end(); ++ it)
|
---|
1536 | {
|
---|
1537 | ViewCell *viewcell = *it;
|
---|
1538 |
|
---|
1539 | const int pvsSize = mViewCellsTree->GetPvsSize(viewcell);
|
---|
1540 |
|
---|
1541 | if (pvsSize < stat.minPvs)
|
---|
1542 | stat.minPvs = pvsSize;
|
---|
1543 | if (pvsSize > stat.maxPvs)
|
---|
1544 | stat.maxPvs = pvsSize;
|
---|
1545 | stat.avgPvs += pvsSize;
|
---|
1546 |
|
---|
1547 | ++ stat.viewcells;
|
---|
1548 | }
|
---|
1549 |
|
---|
1550 | if (stat.viewcells)
|
---|
1551 | stat.avgPvs/=stat.viewcells;
|
---|
1552 | }
|
---|
1553 |
|
---|
1554 |
|
---|
1555 | void ViewCellsManager::PrintPvsStatistics(ostream &s)
|
---|
1556 | {
|
---|
1557 | s<<"############# Viewcell PVS STAT ##################\n";
|
---|
1558 | PvsStatistics pvsStat;
|
---|
1559 | GetPvsStatistics(pvsStat);
|
---|
1560 | s<<"#AVG_PVS\n"<<pvsStat.avgPvs<<endl;
|
---|
1561 | s<<"#MAX_PVS\n"<<pvsStat.maxPvs<<endl;
|
---|
1562 | s<<"#MIN_PVS\n"<<pvsStat.minPvs<<endl;
|
---|
1563 | }
|
---|
1564 |
|
---|
1565 |
|
---|
1566 | int ViewCellsManager::CastBeam(Beam &beam)
|
---|
1567 | {
|
---|
1568 | return 0;
|
---|
1569 | }
|
---|
1570 |
|
---|
1571 |
|
---|
1572 | ViewCellContainer &ViewCellsManager::GetViewCells()
|
---|
1573 | {
|
---|
1574 | return mViewCells;
|
---|
1575 | }
|
---|
1576 |
|
---|
1577 |
|
---|
1578 | void ViewCellsManager::SetViewSpaceBox(const AxisAlignedBox3 &box)
|
---|
1579 | {
|
---|
1580 | mViewSpaceBox = box;
|
---|
1581 |
|
---|
1582 | CreateClipPlane();
|
---|
1583 |
|
---|
1584 | mTotalAreaValid = false;
|
---|
1585 | }
|
---|
1586 |
|
---|
1587 |
|
---|
1588 | void ViewCellsManager::CreateClipPlane()
|
---|
1589 | {
|
---|
1590 | int axis = 0;
|
---|
1591 | float pos;
|
---|
1592 |
|
---|
1593 | mEnvironment->GetFloatValue("ViewCells.Visualization.clipPlanePos", pos);
|
---|
1594 |
|
---|
1595 | Vector3 point = mViewSpaceBox.Min() + mViewSpaceBox.Size() * pos;
|
---|
1596 |
|
---|
1597 | if (mUseClipPlaneForViz)
|
---|
1598 | mEnvironment->GetIntValue("ViewCells.Visualization.clipPlaneAxis", axis);
|
---|
1599 |
|
---|
1600 | Vector3 normal(0,0,0);
|
---|
1601 | normal[axis] = 1;
|
---|
1602 |
|
---|
1603 | mClipPlane = Plane3(normal, point);
|
---|
1604 | }
|
---|
1605 |
|
---|
1606 |
|
---|
1607 | AxisAlignedBox3 ViewCellsManager::GetViewSpaceBox() const
|
---|
1608 | {
|
---|
1609 | return mViewSpaceBox;
|
---|
1610 | }
|
---|
1611 |
|
---|
1612 |
|
---|
1613 | void ViewCellsManager::ResetViewCells()
|
---|
1614 | {
|
---|
1615 | // recollect view cells
|
---|
1616 | mViewCells.clear();
|
---|
1617 | CollectViewCells();
|
---|
1618 |
|
---|
1619 |
|
---|
1620 | // stats are computed once more
|
---|
1621 | mCurrentViewCellsStats.Reset();
|
---|
1622 | EvaluateViewCellsStats();
|
---|
1623 |
|
---|
1624 | // has to be recomputed
|
---|
1625 | mTotalAreaValid = false;
|
---|
1626 | }
|
---|
1627 |
|
---|
1628 |
|
---|
1629 | int ViewCellsManager::GetMaxPvsSize() const
|
---|
1630 | {
|
---|
1631 | return mMaxPvsSize;
|
---|
1632 | }
|
---|
1633 |
|
---|
1634 |
|
---|
1635 | void
|
---|
1636 | ViewCellsManager::AddSampleContributions(const VssRayContainer &rays)
|
---|
1637 | {
|
---|
1638 | if (!ViewCellsConstructed())
|
---|
1639 | return;
|
---|
1640 |
|
---|
1641 | VssRayContainer::const_iterator it, it_end = rays.end();
|
---|
1642 |
|
---|
1643 | for (it = rays.begin(); it != it_end; ++ it) {
|
---|
1644 | AddSampleContributions(*(*it));
|
---|
1645 | }
|
---|
1646 | }
|
---|
1647 |
|
---|
1648 |
|
---|
1649 | int ViewCellsManager::GetMinPvsSize() const
|
---|
1650 | {
|
---|
1651 | return mMinPvsSize;
|
---|
1652 | }
|
---|
1653 |
|
---|
1654 |
|
---|
1655 |
|
---|
1656 | float ViewCellsManager::GetMaxPvsRatio() const
|
---|
1657 | {
|
---|
1658 | return mMaxPvsRatio;
|
---|
1659 | }
|
---|
1660 |
|
---|
1661 |
|
---|
1662 | void
|
---|
1663 | ViewCellsManager::AddSampleContributions(VssRay &ray)
|
---|
1664 | {
|
---|
1665 | // assumes viewcells have been stored...
|
---|
1666 | ViewCellContainer *viewcells = &ray.mViewCells;
|
---|
1667 | ViewCellContainer::const_iterator it;
|
---|
1668 | for (it = viewcells->begin(); it != viewcells->end(); ++it) {
|
---|
1669 | ViewCell *viewcell = *it;
|
---|
1670 | if (viewcell->GetValid()) {
|
---|
1671 | // if ray not outside of view space
|
---|
1672 | viewcell->GetPvs().AddSample(ray.mTerminationObject, ray.mPdf);
|
---|
1673 | }
|
---|
1674 | }
|
---|
1675 | }
|
---|
1676 |
|
---|
1677 |
|
---|
1678 | float ViewCellsManager::ComputeSampleContributions(VssRay &ray,
|
---|
1679 | const bool addRays,
|
---|
1680 | const bool storeViewCells)
|
---|
1681 | {
|
---|
1682 | ViewCellContainer viewcells;
|
---|
1683 |
|
---|
1684 | ray.mPvsContribution = 0;
|
---|
1685 | ray.mRelativePvsContribution = 0.0f;
|
---|
1686 |
|
---|
1687 | static Ray hray;
|
---|
1688 | hray.Init(ray);
|
---|
1689 | //hray.mFlags |= Ray::CULL_BACKFACES;
|
---|
1690 | //Ray hray(ray);
|
---|
1691 |
|
---|
1692 | float tmin = 0, tmax = 1.0;
|
---|
1693 |
|
---|
1694 | if (!GetViewSpaceBox().GetRaySegment(hray, tmin, tmax) || (tmin > tmax))
|
---|
1695 | return 0;
|
---|
1696 |
|
---|
1697 | Vector3 origin = hray.Extrap(tmin);
|
---|
1698 | Vector3 termination = hray.Extrap(tmax);
|
---|
1699 |
|
---|
1700 | CastLineSegment(origin, termination, viewcells);
|
---|
1701 |
|
---|
1702 | // copy viewcells memory efficiently
|
---|
1703 | //const bool storeViewcells = !addRays;
|
---|
1704 |
|
---|
1705 | if (storeViewCells)
|
---|
1706 | {
|
---|
1707 | ray.mViewCells.reserve(viewcells.size());
|
---|
1708 | ray.mViewCells = viewcells;
|
---|
1709 | }
|
---|
1710 |
|
---|
1711 | ViewCellContainer::const_iterator it = viewcells.begin();
|
---|
1712 |
|
---|
1713 | for (; it != viewcells.end(); ++ it)
|
---|
1714 | {
|
---|
1715 | ViewCell *viewcell = *it;
|
---|
1716 |
|
---|
1717 | if (viewcell->GetValid())
|
---|
1718 | {
|
---|
1719 | // if ray not outside of view space
|
---|
1720 | float contribution;
|
---|
1721 | if (ray.mTerminationObject &&
|
---|
1722 | viewcell->GetPvs().GetSampleContribution(ray.mTerminationObject,
|
---|
1723 | ray.mPdf,
|
---|
1724 | contribution))
|
---|
1725 | {
|
---|
1726 | ++ ray.mPvsContribution;
|
---|
1727 | ray.mRelativePvsContribution += contribution;
|
---|
1728 | }
|
---|
1729 |
|
---|
1730 | // for directional sampling it is important to count only contributions
|
---|
1731 | // made in one direction!!!
|
---|
1732 | // the other contributions of this sample will be counted for the oposite ray!
|
---|
1733 | #if 0
|
---|
1734 | if (ray.mOriginObject &&
|
---|
1735 | viewcell->GetPvs().GetSampleContribution(ray.mOriginObject,
|
---|
1736 | ray.mPdf,
|
---|
1737 | contribution))
|
---|
1738 | {
|
---|
1739 | ++ ray.mPvsContribution;
|
---|
1740 | ray.mRelativePvsContribution += contribution;
|
---|
1741 | }
|
---|
1742 | #endif
|
---|
1743 | }
|
---|
1744 | }
|
---|
1745 |
|
---|
1746 |
|
---|
1747 | if (addRays)
|
---|
1748 | {
|
---|
1749 | for (it = viewcells.begin(); it != viewcells.end(); ++ it)
|
---|
1750 | {
|
---|
1751 | ViewCell *viewcell = *it;
|
---|
1752 |
|
---|
1753 | if (viewcell->GetValid())
|
---|
1754 | {
|
---|
1755 | // if ray not outside of view space
|
---|
1756 | if (ray.mTerminationObject)
|
---|
1757 | viewcell->GetPvs().AddSample(ray.mTerminationObject, ray.mPdf);
|
---|
1758 |
|
---|
1759 | #if 0
|
---|
1760 | if (ray.mOriginObject)
|
---|
1761 | viewcell->GetPvs().AddSample(ray.mOriginObject, ray.mPdf);
|
---|
1762 | #endif
|
---|
1763 | }
|
---|
1764 | }
|
---|
1765 | }
|
---|
1766 |
|
---|
1767 | return ray.mRelativePvsContribution;
|
---|
1768 | }
|
---|
1769 |
|
---|
1770 |
|
---|
1771 | void ViewCellsManager::GetRaySets(const VssRayContainer &sourceRays,
|
---|
1772 | const int maxSize,
|
---|
1773 | VssRayContainer &usedRays,
|
---|
1774 | VssRayContainer *savedRays) const
|
---|
1775 | {
|
---|
1776 | const int limit = min(maxSize, (int)sourceRays.size());
|
---|
1777 | const float prop = (float)limit / ((float)sourceRays.size() + Limits::Small);
|
---|
1778 |
|
---|
1779 | VssRayContainer::const_iterator it, it_end = sourceRays.end();
|
---|
1780 | for (it = sourceRays.begin(); it != it_end; ++ it)
|
---|
1781 | {
|
---|
1782 | if (Random(1.0f) < prop)
|
---|
1783 | usedRays.push_back(*it);
|
---|
1784 | else if (savedRays)
|
---|
1785 | savedRays->push_back(*it);
|
---|
1786 | }
|
---|
1787 | }
|
---|
1788 |
|
---|
1789 |
|
---|
1790 | float ViewCellsManager::GetRendercost(ViewCell *viewCell) const
|
---|
1791 | {
|
---|
1792 | return mViewCellsTree->GetPvsSize(viewCell);
|
---|
1793 | }
|
---|
1794 |
|
---|
1795 |
|
---|
1796 | float ViewCellsManager::GetAccVcArea()
|
---|
1797 | {
|
---|
1798 | // if already computed
|
---|
1799 | if (mTotalAreaValid)
|
---|
1800 | {
|
---|
1801 | return mTotalArea;
|
---|
1802 | }
|
---|
1803 |
|
---|
1804 | mTotalArea = 0;
|
---|
1805 | ViewCellContainer::const_iterator it, it_end = mViewCells.end();
|
---|
1806 |
|
---|
1807 | for (it = mViewCells.begin(); it != it_end; ++ it)
|
---|
1808 | {
|
---|
1809 | //Debug << "area: " << GetArea(*it);
|
---|
1810 | mTotalArea += GetArea(*it);
|
---|
1811 | }
|
---|
1812 |
|
---|
1813 | mTotalAreaValid = true;
|
---|
1814 |
|
---|
1815 | return mTotalArea;
|
---|
1816 | }
|
---|
1817 |
|
---|
1818 |
|
---|
1819 | void ViewCellsManager::PrintStatistics(ostream &s) const
|
---|
1820 | {
|
---|
1821 | s << mCurrentViewCellsStats << endl;
|
---|
1822 | }
|
---|
1823 |
|
---|
1824 |
|
---|
1825 | void ViewCellsManager::CreateUniqueViewCellIds()
|
---|
1826 | {
|
---|
1827 | if (ViewCellsTreeConstructed())
|
---|
1828 | mViewCellsTree->CreateUniqueViewCellsIds();
|
---|
1829 | else
|
---|
1830 | for (int i = 0; i < (int)mViewCells.size(); ++ i)
|
---|
1831 | mViewCells[i]->SetId(i);
|
---|
1832 | }
|
---|
1833 |
|
---|
1834 |
|
---|
1835 | void ViewCellsManager::ExportViewCellsForViz(Exporter *exporter) const
|
---|
1836 | {
|
---|
1837 | ViewCellContainer::const_iterator it, it_end = mViewCells.end();
|
---|
1838 |
|
---|
1839 | for (it = mViewCells.begin(); it != it_end; ++ it)
|
---|
1840 | {
|
---|
1841 | if (!mOnlyValidViewCells || (*it)->GetValid())
|
---|
1842 | {
|
---|
1843 | ExportColor(exporter, *it);
|
---|
1844 |
|
---|
1845 | ExportViewCellGeometry(exporter, *it,
|
---|
1846 | mUseClipPlaneForViz ? &mClipPlane : NULL);
|
---|
1847 | }
|
---|
1848 | }
|
---|
1849 | }
|
---|
1850 |
|
---|
1851 |
|
---|
1852 | void ViewCellsManager::CreateViewCellMeshes()
|
---|
1853 | {
|
---|
1854 | // convert to meshes
|
---|
1855 | ViewCellContainer::const_iterator it, it_end = mViewCells.end();
|
---|
1856 |
|
---|
1857 | for (it = mViewCells.begin(); it != it_end; ++ it)
|
---|
1858 | {
|
---|
1859 | if (!(*it)->GetMesh())
|
---|
1860 | CreateMesh(*it);
|
---|
1861 | }
|
---|
1862 | }
|
---|
1863 |
|
---|
1864 |
|
---|
1865 | bool ViewCellsManager::ExportViewCells(const string filename,
|
---|
1866 | const bool exportPvs,
|
---|
1867 | const ObjectContainer &objects)
|
---|
1868 | {
|
---|
1869 | return false;
|
---|
1870 | }
|
---|
1871 |
|
---|
1872 |
|
---|
1873 | void ViewCellsManager::CollectViewCells(const int n)
|
---|
1874 | {
|
---|
1875 | mNumActiveViewCells = n;
|
---|
1876 | mViewCells.clear();
|
---|
1877 | CollectViewCells();
|
---|
1878 | }
|
---|
1879 |
|
---|
1880 |
|
---|
1881 | void ViewCellsManager::SetViewCellsActive()
|
---|
1882 | {
|
---|
1883 | // collect leaf view cells and set the pointers to the currently
|
---|
1884 | // active view cells
|
---|
1885 | ViewCellContainer::const_iterator it, it_end = mViewCells.end();
|
---|
1886 |
|
---|
1887 | for (it = mViewCells.begin(); it != it_end; ++ it)
|
---|
1888 | {
|
---|
1889 | ViewCellContainer leaves;
|
---|
1890 | mViewCellsTree->CollectLeaves(*it, leaves);
|
---|
1891 |
|
---|
1892 | ViewCellContainer::const_iterator lit, lit_end = leaves.end();
|
---|
1893 | for (lit = mViewCells.begin(); lit != lit_end; ++ lit)
|
---|
1894 | {
|
---|
1895 | dynamic_cast<ViewCellLeaf *>(*lit)->SetActiveViewCell(*it);
|
---|
1896 | }
|
---|
1897 | }
|
---|
1898 | }
|
---|
1899 |
|
---|
1900 |
|
---|
1901 | int ViewCellsManager::GetMaxFilterSize() const
|
---|
1902 | {
|
---|
1903 | return mMaxFilterSize;
|
---|
1904 | }
|
---|
1905 |
|
---|
1906 | static const bool USE_ASCII = true;
|
---|
1907 |
|
---|
1908 | bool ViewCellsManager::ExportBoundingBoxes(const string filename,
|
---|
1909 | const ObjectContainer &objects) const
|
---|
1910 | {
|
---|
1911 | ObjectContainer::const_iterator it, it_end = objects.end();
|
---|
1912 |
|
---|
1913 | if (USE_ASCII)
|
---|
1914 | {
|
---|
1915 | ofstream boxesOut(filename.c_str());
|
---|
1916 | if (!boxesOut.is_open())
|
---|
1917 | return false;
|
---|
1918 |
|
---|
1919 | for (it = objects.begin(); it != it_end; ++ it)
|
---|
1920 | {
|
---|
1921 | MeshInstance *mi = dynamic_cast<MeshInstance *>(*it);
|
---|
1922 | const AxisAlignedBox3 box = mi->GetBox();
|
---|
1923 |
|
---|
1924 | boxesOut << mi->GetId() << " "
|
---|
1925 | << box.Min().x << " "
|
---|
1926 | << box.Min().y << " "
|
---|
1927 | << box.Min().z << " "
|
---|
1928 | << box.Max().x << " "
|
---|
1929 | << box.Max().y << " "
|
---|
1930 | << box.Max().z << endl;
|
---|
1931 | }
|
---|
1932 |
|
---|
1933 | boxesOut.close();
|
---|
1934 | }
|
---|
1935 | else
|
---|
1936 | {
|
---|
1937 | ofstream boxesOut(filename.c_str(), ios::binary);
|
---|
1938 |
|
---|
1939 | if (!boxesOut.is_open())
|
---|
1940 | return false;
|
---|
1941 |
|
---|
1942 | for (it = objects.begin(); it != it_end; ++ it)
|
---|
1943 | {
|
---|
1944 | MeshInstance *mi = dynamic_cast<MeshInstance *>(*it);
|
---|
1945 | const AxisAlignedBox3 box = mi->GetBox();
|
---|
1946 | Vector3 bmin = box.Min();
|
---|
1947 | Vector3 bmax = box.Max();
|
---|
1948 | int id = mi->GetId();
|
---|
1949 |
|
---|
1950 | boxesOut.write(reinterpret_cast<char *>(&id), sizeof(int));
|
---|
1951 | boxesOut.write(reinterpret_cast<char *>(&bmin), sizeof(Vector3));
|
---|
1952 | boxesOut.write(reinterpret_cast<char *>(&bmax), sizeof(Vector3));
|
---|
1953 | }
|
---|
1954 |
|
---|
1955 | boxesOut.close();
|
---|
1956 | }
|
---|
1957 |
|
---|
1958 |
|
---|
1959 | return true;
|
---|
1960 | }
|
---|
1961 |
|
---|
1962 |
|
---|
1963 | bool ViewCellsManager::LoadBoundingBoxes(const string filename,
|
---|
1964 | IndexedBoundingBoxContainer &boxes) const
|
---|
1965 | {
|
---|
1966 | Vector3 bmin, bmax;
|
---|
1967 | int id;
|
---|
1968 |
|
---|
1969 | if (USE_ASCII)
|
---|
1970 | {
|
---|
1971 | ifstream boxesIn(filename.c_str());
|
---|
1972 |
|
---|
1973 | if (!boxesIn.is_open())
|
---|
1974 | {
|
---|
1975 | cout << "failed to open file " << filename << endl;
|
---|
1976 | return false;
|
---|
1977 | }
|
---|
1978 |
|
---|
1979 | string buf;
|
---|
1980 | while (!(getline(boxesIn, buf)).eof())
|
---|
1981 | {
|
---|
1982 | sscanf(buf.c_str(), "%d %f %f %f %f %f %f",
|
---|
1983 | &id, &bmin.x, &bmin.y, &bmin.z,
|
---|
1984 | &bmax.x, &bmax.y, &bmax.z);
|
---|
1985 |
|
---|
1986 | AxisAlignedBox3 box(bmin, bmax);
|
---|
1987 | // MeshInstance *mi = new MeshInstance();
|
---|
1988 | // HACK: set bounding box to new box
|
---|
1989 | //mi->mBox = box;
|
---|
1990 |
|
---|
1991 | boxes.push_back(IndexedBoundingBox(id, box));
|
---|
1992 | }
|
---|
1993 |
|
---|
1994 | boxesIn.close();
|
---|
1995 | }
|
---|
1996 | else
|
---|
1997 | {
|
---|
1998 | ifstream boxesIn(filename.c_str(), ios::binary);
|
---|
1999 |
|
---|
2000 | if (!boxesIn.is_open())
|
---|
2001 | return false;
|
---|
2002 |
|
---|
2003 | while (1)
|
---|
2004 | {
|
---|
2005 | boxesIn.read(reinterpret_cast<char *>(&id), sizeof(Vector3));
|
---|
2006 | boxesIn.read(reinterpret_cast<char *>(&bmin), sizeof(Vector3));
|
---|
2007 | boxesIn.read(reinterpret_cast<char *>(&bmax), sizeof(Vector3));
|
---|
2008 |
|
---|
2009 | if (boxesIn.eof())
|
---|
2010 | break;
|
---|
2011 |
|
---|
2012 |
|
---|
2013 | AxisAlignedBox3 box(bmin, bmax);
|
---|
2014 | MeshInstance *mi = new MeshInstance(NULL);
|
---|
2015 |
|
---|
2016 | // HACK: set bounding box to new box
|
---|
2017 | //mi->mBox = box;
|
---|
2018 | //boxes.push_back(mi);
|
---|
2019 | boxes.push_back(IndexedBoundingBox(id, box));
|
---|
2020 | }
|
---|
2021 |
|
---|
2022 | boxesIn.close();
|
---|
2023 | }
|
---|
2024 |
|
---|
2025 | return true;
|
---|
2026 | }
|
---|
2027 |
|
---|
2028 |
|
---|
2029 | float ViewCellsManager::GetFilterWidth()
|
---|
2030 | {
|
---|
2031 | return mFilterWidth;
|
---|
2032 | }
|
---|
2033 |
|
---|
2034 |
|
---|
2035 | float ViewCellsManager::GetAbsFilterWidth()
|
---|
2036 | {
|
---|
2037 | return Magnitude(mViewSpaceBox.Size()) * mFilterWidth;
|
---|
2038 | }
|
---|
2039 |
|
---|
2040 |
|
---|
2041 | /**********************************************************************/
|
---|
2042 | /* BspViewCellsManager implementation */
|
---|
2043 | /**********************************************************************/
|
---|
2044 |
|
---|
2045 |
|
---|
2046 | BspViewCellsManager::BspViewCellsManager(BspTree *bspTree, Environment *env):
|
---|
2047 | ViewCellsManager(env), mBspTree(bspTree)
|
---|
2048 | {
|
---|
2049 | mEnvironment->GetIntValue("BspTree.Construction.samples", mInitialSamples);
|
---|
2050 | mBspTree->SetViewCellsManager(this);
|
---|
2051 | mBspTree->mViewCellsTree = mViewCellsTree;
|
---|
2052 | }
|
---|
2053 |
|
---|
2054 |
|
---|
2055 | bool BspViewCellsManager::ViewCellsConstructed() const
|
---|
2056 | {
|
---|
2057 | return mBspTree->GetRoot() != NULL;
|
---|
2058 | }
|
---|
2059 |
|
---|
2060 |
|
---|
2061 | ViewCell *BspViewCellsManager::GenerateViewCell(Mesh *mesh) const
|
---|
2062 | {
|
---|
2063 | return new BspViewCell(mesh);
|
---|
2064 | }
|
---|
2065 |
|
---|
2066 |
|
---|
2067 | int BspViewCellsManager::ConstructSubdivision(const ObjectContainer &objects,
|
---|
2068 | const VssRayContainer &rays)
|
---|
2069 | {
|
---|
2070 | // if view cells were already constructed
|
---|
2071 | if (ViewCellsConstructed())
|
---|
2072 | return 0;
|
---|
2073 |
|
---|
2074 | int sampleContributions = 0;
|
---|
2075 |
|
---|
2076 | // construct view cells using the collected samples
|
---|
2077 | RayContainer constructionRays;
|
---|
2078 | VssRayContainer savedRays;
|
---|
2079 |
|
---|
2080 | const int limit = min(mInitialSamples, (int)rays.size());
|
---|
2081 |
|
---|
2082 | VssRayContainer::const_iterator it, it_end = rays.end();
|
---|
2083 |
|
---|
2084 | const float prop = (float)limit / ((float)rays.size() + Limits::Small);
|
---|
2085 |
|
---|
2086 | for (it = rays.begin(); it != it_end; ++ it)
|
---|
2087 | {
|
---|
2088 | if (Random(1.0f) < prop)
|
---|
2089 | constructionRays.push_back(new Ray(*(*it)));
|
---|
2090 | else
|
---|
2091 | savedRays.push_back(*it);
|
---|
2092 | }
|
---|
2093 |
|
---|
2094 | if (mViewCells.empty())
|
---|
2095 | {
|
---|
2096 | // no view cells loaded
|
---|
2097 | mBspTree->Construct(objects, constructionRays, &mViewSpaceBox);
|
---|
2098 | // collect final view cells
|
---|
2099 | mBspTree->CollectViewCells(mViewCells);
|
---|
2100 | }
|
---|
2101 | else
|
---|
2102 | {
|
---|
2103 | mBspTree->Construct(mViewCells);
|
---|
2104 | }
|
---|
2105 |
|
---|
2106 | // destroy rays created only for construction
|
---|
2107 | CLEAR_CONTAINER(constructionRays);
|
---|
2108 |
|
---|
2109 | Debug << mBspTree->GetStatistics() << endl;
|
---|
2110 |
|
---|
2111 | //EvaluateViewCellsStats();
|
---|
2112 | Debug << "\nView cells after construction:\n" << mCurrentViewCellsStats << endl;
|
---|
2113 |
|
---|
2114 | // recast rest of the rays
|
---|
2115 | if (SAMPLE_AFTER_SUBDIVISION)
|
---|
2116 | ComputeSampleContributions(savedRays, true, false);
|
---|
2117 |
|
---|
2118 | // real meshes are contructed at this stage
|
---|
2119 | if (0)
|
---|
2120 | {
|
---|
2121 | cout << "finalizing view cells ... ";
|
---|
2122 | FinalizeViewCells(true);
|
---|
2123 | cout << "finished" << endl;
|
---|
2124 | }
|
---|
2125 |
|
---|
2126 | return sampleContributions;
|
---|
2127 | }
|
---|
2128 |
|
---|
2129 |
|
---|
2130 | void BspViewCellsManager::CollectViewCells()
|
---|
2131 | {
|
---|
2132 | // view cells tree constructed
|
---|
2133 | if (!ViewCellsTreeConstructed())
|
---|
2134 | {
|
---|
2135 | mBspTree->CollectViewCells(mViewCells);
|
---|
2136 | }
|
---|
2137 | else
|
---|
2138 | {
|
---|
2139 | // we can use the view cells tree hierarchy to get the right set
|
---|
2140 | mViewCellsTree->CollectBestViewCellSet(mViewCells,
|
---|
2141 | mNumActiveViewCells);
|
---|
2142 | }
|
---|
2143 | }
|
---|
2144 |
|
---|
2145 |
|
---|
2146 | float BspViewCellsManager::GetProbability(ViewCell *viewCell)
|
---|
2147 | {
|
---|
2148 | // compute view cell area as subsititute for probability
|
---|
2149 | if (1)
|
---|
2150 | return GetVolume(viewCell) / GetViewSpaceBox().GetVolume();
|
---|
2151 | else
|
---|
2152 | return GetArea(viewCell) / GetAccVcArea();
|
---|
2153 | }
|
---|
2154 |
|
---|
2155 |
|
---|
2156 |
|
---|
2157 | int BspViewCellsManager::CastLineSegment(const Vector3 &origin,
|
---|
2158 | const Vector3 &termination,
|
---|
2159 | ViewCellContainer &viewcells)
|
---|
2160 | {
|
---|
2161 | return mBspTree->CastLineSegment(origin, termination, viewcells);
|
---|
2162 | }
|
---|
2163 |
|
---|
2164 |
|
---|
2165 | int BspViewCellsManager::PostProcess(const ObjectContainer &objects,
|
---|
2166 | const VssRayContainer &rays)
|
---|
2167 | {
|
---|
2168 | if (!ViewCellsConstructed())
|
---|
2169 | {
|
---|
2170 | Debug << "view cells not constructed" << endl;
|
---|
2171 | return 0;
|
---|
2172 | }
|
---|
2173 |
|
---|
2174 | // view cells already finished before post processing step (i.e. because they were loaded)
|
---|
2175 | if (mViewCellsFinished)
|
---|
2176 | {
|
---|
2177 | FinalizeViewCells(true);
|
---|
2178 | EvaluateViewCellsStats();
|
---|
2179 |
|
---|
2180 | return 0;
|
---|
2181 | }
|
---|
2182 |
|
---|
2183 | //-- post processing of bsp view cells
|
---|
2184 |
|
---|
2185 | int vcSize = 0;
|
---|
2186 | int pvsSize = 0;
|
---|
2187 |
|
---|
2188 | //-- merge view cells
|
---|
2189 | cout << "starting post processing using " << mPostProcessSamples << " samples ... ";
|
---|
2190 | long startTime = GetTime();
|
---|
2191 |
|
---|
2192 | VssRayContainer postProcessRays;
|
---|
2193 | GetRaySets(rays, mPostProcessSamples, postProcessRays);
|
---|
2194 |
|
---|
2195 | if (mMergeViewCells)
|
---|
2196 | {
|
---|
2197 | cout << "constructing visibility based merge tree" << endl;
|
---|
2198 | mViewCellsTree->ConstructMergeTree(rays, objects);
|
---|
2199 | }
|
---|
2200 | else
|
---|
2201 | {
|
---|
2202 | cout << "constructing spatial merge tree" << endl;
|
---|
2203 |
|
---|
2204 | // create spatial merge hierarchy
|
---|
2205 | ViewCell *root = ConstructSpatialMergeTree(mBspTree->GetRoot());
|
---|
2206 | mViewCellsTree->SetRoot(root);
|
---|
2207 |
|
---|
2208 | // compute pvs
|
---|
2209 | ObjectPvs pvs;
|
---|
2210 | UpdatePvsForEvaluation(root, pvs);
|
---|
2211 | }
|
---|
2212 |
|
---|
2213 | // export statistics after merge
|
---|
2214 | if (1)
|
---|
2215 | {
|
---|
2216 | char mstats[100];
|
---|
2217 | mEnvironment->GetStringValue("ViewCells.mergeStats", mstats);
|
---|
2218 | mViewCellsTree->ExportStats(mstats);
|
---|
2219 | }
|
---|
2220 |
|
---|
2221 | //-- stats and visualizations
|
---|
2222 | cout << "finished" << endl;
|
---|
2223 | cout << "merged view cells in "
|
---|
2224 | << TimeDiff(startTime, GetTime()) * 1e-3 << " secs" << endl;
|
---|
2225 |
|
---|
2226 | Debug << "Postprocessing: Merged view cells in "
|
---|
2227 | << TimeDiff(startTime, GetTime()) * 1e-3 << " secs" << endl << endl;
|
---|
2228 |
|
---|
2229 |
|
---|
2230 | //-- visualization and statistics
|
---|
2231 | // reset view cells and stats
|
---|
2232 | ResetViewCells();
|
---|
2233 | Debug << "\nView cells after merge:\n" << mCurrentViewCellsStats << endl;
|
---|
2234 |
|
---|
2235 |
|
---|
2236 | int savedColorCode = mColorCode;
|
---|
2237 |
|
---|
2238 | //BspLeaf::NewMail();
|
---|
2239 | if (1) // export merged view cells
|
---|
2240 | {
|
---|
2241 | mColorCode = 0;
|
---|
2242 |
|
---|
2243 | Exporter *exporter = Exporter::GetExporter("merged_view_cells.wrl");
|
---|
2244 |
|
---|
2245 |
|
---|
2246 | cout << "exporting view cells after merge ... ";
|
---|
2247 |
|
---|
2248 | if (exporter)
|
---|
2249 | {
|
---|
2250 | if (mExportGeometry)
|
---|
2251 | exporter->ExportGeometry(objects);
|
---|
2252 |
|
---|
2253 | //exporter->SetWireframe();
|
---|
2254 | exporter->SetFilled();
|
---|
2255 | ExportViewCellsForViz(exporter);
|
---|
2256 |
|
---|
2257 |
|
---|
2258 | delete exporter;
|
---|
2259 | }
|
---|
2260 | cout << "finished" << endl;
|
---|
2261 | }
|
---|
2262 |
|
---|
2263 | if (1) // export merged view cells using pvs color coding
|
---|
2264 | {
|
---|
2265 | mColorCode = 1;
|
---|
2266 |
|
---|
2267 | Exporter *exporter = Exporter::GetExporter("merged_view_cells_pvs.wrl");
|
---|
2268 |
|
---|
2269 | cout << "exporting view cells after merge (pvs size) ... ";
|
---|
2270 |
|
---|
2271 | if (exporter)
|
---|
2272 | {
|
---|
2273 | //exporter->SetWireframe();
|
---|
2274 | //exporter->SetForcedMaterial(RandomMaterial());
|
---|
2275 |
|
---|
2276 | if (mExportGeometry)
|
---|
2277 | exporter->ExportGeometry(objects);
|
---|
2278 |
|
---|
2279 | //exporter->SetWireframe();
|
---|
2280 | exporter->SetFilled();
|
---|
2281 | ExportViewCellsForViz(exporter);
|
---|
2282 |
|
---|
2283 | delete exporter;
|
---|
2284 | }
|
---|
2285 | cout << "finished" << endl;
|
---|
2286 | }
|
---|
2287 |
|
---|
2288 |
|
---|
2289 | // only for testing
|
---|
2290 | TestSubdivision();
|
---|
2291 |
|
---|
2292 | mColorCode = savedColorCode;
|
---|
2293 |
|
---|
2294 | // compute final meshes and volume / area
|
---|
2295 | if (1) FinalizeViewCells(true);
|
---|
2296 |
|
---|
2297 | // write view cells to disc
|
---|
2298 | if (mExportViewCells)
|
---|
2299 | {
|
---|
2300 | char filename[100];
|
---|
2301 | mEnvironment->GetStringValue("ViewCells.filename", filename);
|
---|
2302 | ExportViewCells(filename, mExportPvs, objects);
|
---|
2303 | }
|
---|
2304 |
|
---|
2305 | // export bounding boxes
|
---|
2306 | if (0 && mExportBboxesForPvs)
|
---|
2307 | {
|
---|
2308 | char filename[100];
|
---|
2309 | mEnvironment->GetStringValue("ViewCells.boxesFilename", filename);
|
---|
2310 | ExportBoundingBoxes(filename, objects);
|
---|
2311 | }
|
---|
2312 |
|
---|
2313 |
|
---|
2314 | return 0;
|
---|
2315 | }
|
---|
2316 |
|
---|
2317 |
|
---|
2318 | BspViewCellsManager::~BspViewCellsManager()
|
---|
2319 | {
|
---|
2320 | }
|
---|
2321 |
|
---|
2322 |
|
---|
2323 | int BspViewCellsManager::GetType() const
|
---|
2324 | {
|
---|
2325 | return BSP;
|
---|
2326 | }
|
---|
2327 |
|
---|
2328 |
|
---|
2329 | void BspViewCellsManager::Visualize(const ObjectContainer &objects,
|
---|
2330 | const VssRayContainer &sampleRays)
|
---|
2331 | {
|
---|
2332 | if (!ViewCellsConstructed())
|
---|
2333 | return;
|
---|
2334 |
|
---|
2335 | int savedColorCode = mColorCode;
|
---|
2336 |
|
---|
2337 |
|
---|
2338 |
|
---|
2339 | if (1) // export final view cells
|
---|
2340 | {
|
---|
2341 | mColorCode = 1;
|
---|
2342 |
|
---|
2343 | Exporter *exporter = Exporter::GetExporter("final_view_cells.x3d");
|
---|
2344 |
|
---|
2345 | cout << "exporting view cells after merge (pvs size) ... ";
|
---|
2346 |
|
---|
2347 | if (exporter)
|
---|
2348 | {
|
---|
2349 | //exporter->SetWireframe();
|
---|
2350 |
|
---|
2351 | if (mExportGeometry)
|
---|
2352 | exporter->ExportGeometry(objects);
|
---|
2353 |
|
---|
2354 | //exporter->SetWireframe();
|
---|
2355 | //exporter->SetFilled();
|
---|
2356 | bool b = mUseClipPlaneForViz;
|
---|
2357 | mUseClipPlaneForViz = false;
|
---|
2358 | ExportViewCellsForViz(exporter);
|
---|
2359 | mUseClipPlaneForViz = b;
|
---|
2360 | delete exporter;
|
---|
2361 | }
|
---|
2362 | cout << "finished" << endl;
|
---|
2363 | }
|
---|
2364 |
|
---|
2365 | mColorCode = savedColorCode;
|
---|
2366 |
|
---|
2367 | //-- visualization of the BSP splits
|
---|
2368 | bool exportSplits = false;
|
---|
2369 | mEnvironment->GetBoolValue("BspTree.Visualization.exportSplits", exportSplits);
|
---|
2370 |
|
---|
2371 | if (exportSplits)
|
---|
2372 | {
|
---|
2373 | cout << "exporting splits ... ";
|
---|
2374 | ExportSplits(objects);
|
---|
2375 | cout << "finished" << endl;
|
---|
2376 | }
|
---|
2377 |
|
---|
2378 | // export single view cells
|
---|
2379 | ExportBspPvs(objects);
|
---|
2380 | }
|
---|
2381 |
|
---|
2382 |
|
---|
2383 | void BspViewCellsManager::ExportSplits(const ObjectContainer &objects)
|
---|
2384 | {
|
---|
2385 | Exporter *exporter = Exporter::GetExporter("bsp_splits.x3d");
|
---|
2386 |
|
---|
2387 | if (exporter)
|
---|
2388 | {
|
---|
2389 | //exporter->SetFilled();
|
---|
2390 |
|
---|
2391 | if (mExportGeometry)
|
---|
2392 | exporter->ExportGeometry(objects);
|
---|
2393 |
|
---|
2394 | Material m;
|
---|
2395 | m.mDiffuseColor = RgbColor(1, 0, 0);
|
---|
2396 | exporter->SetForcedMaterial(m);
|
---|
2397 | exporter->SetWireframe();
|
---|
2398 |
|
---|
2399 | exporter->ExportBspSplits(*mBspTree, true);
|
---|
2400 |
|
---|
2401 | //NOTE: take forced material, else big scenes cannot be viewed
|
---|
2402 | m.mDiffuseColor = RgbColor(0, 1, 0);
|
---|
2403 | exporter->SetForcedMaterial(m);
|
---|
2404 | //exporter->ResetForcedMaterial();
|
---|
2405 |
|
---|
2406 | delete exporter;
|
---|
2407 | }
|
---|
2408 | }
|
---|
2409 |
|
---|
2410 |
|
---|
2411 | void BspViewCellsManager::ExportBspPvs(const ObjectContainer &objects)
|
---|
2412 | {
|
---|
2413 | const int leafOut = 10;
|
---|
2414 |
|
---|
2415 | ViewCell::NewMail();
|
---|
2416 |
|
---|
2417 | //-- some rays for output
|
---|
2418 | const int raysOut = min((int)mBspRays.size(), mVisualizationSamples);
|
---|
2419 |
|
---|
2420 | cout << "visualization using " << mVisualizationSamples << " samples" << endl;
|
---|
2421 | Debug << "\nOutput view cells: " << endl;
|
---|
2422 |
|
---|
2423 | // sort view cells to get largest view cells
|
---|
2424 | if (0)
|
---|
2425 | stable_sort(mViewCells.begin(), mViewCells.end(), ViewCell::SmallerPvs);
|
---|
2426 |
|
---|
2427 | int limit = min(leafOut, (int)mViewCells.size());
|
---|
2428 |
|
---|
2429 | for (int i = 0; i < limit; ++ i)
|
---|
2430 | {
|
---|
2431 | cout << "creating output for view cell " << i << " ... ";
|
---|
2432 | VssRayContainer vcRays;
|
---|
2433 | Intersectable::NewMail();
|
---|
2434 | ViewCell *vc;
|
---|
2435 |
|
---|
2436 | if (0)
|
---|
2437 | vc = mViewCells[i];
|
---|
2438 | else
|
---|
2439 | vc = mViewCells[Random((int)mViewCells.size())];
|
---|
2440 |
|
---|
2441 | cout << "creating output for view cell " << i << " ... ";
|
---|
2442 |
|
---|
2443 | if(0)
|
---|
2444 | {
|
---|
2445 | // check whether we can add the current ray to the output rays
|
---|
2446 | for (int k = 0; k < raysOut; ++ k)
|
---|
2447 | {
|
---|
2448 | BspRay *ray = mBspRays[k];
|
---|
2449 | for (int j = 0; j < (int)ray->intersections.size(); ++ j)
|
---|
2450 | {
|
---|
2451 | BspLeaf *leaf = ray->intersections[j].mLeaf;
|
---|
2452 | if (vc == leaf->GetViewCell())
|
---|
2453 | vcRays.push_back(ray->vssRay);
|
---|
2454 | }
|
---|
2455 | }
|
---|
2456 | }
|
---|
2457 |
|
---|
2458 | //bspLeaves[j]->Mail();
|
---|
2459 | char s[64]; sprintf(s, "bsp-pvs%04d.x3d", i);
|
---|
2460 |
|
---|
2461 | Exporter *exporter = Exporter::GetExporter(s);
|
---|
2462 |
|
---|
2463 | exporter->SetWireframe();
|
---|
2464 |
|
---|
2465 | Material m;//= RandomMaterial();
|
---|
2466 | m.mDiffuseColor = RgbColor(0, 1, 0);
|
---|
2467 | exporter->SetForcedMaterial(m);
|
---|
2468 |
|
---|
2469 | ExportViewCellGeometry(exporter, vc);
|
---|
2470 |
|
---|
2471 | // export rays piercing this view cell
|
---|
2472 | exporter->ExportRays(vcRays, RgbColor(0, 1, 0));
|
---|
2473 |
|
---|
2474 | m.mDiffuseColor = RgbColor(1, 0, 0);
|
---|
2475 | exporter->SetForcedMaterial(m);
|
---|
2476 |
|
---|
2477 | ObjectPvsMap::const_iterator it,
|
---|
2478 | it_end = vc->GetPvs().mEntries.end();
|
---|
2479 |
|
---|
2480 | exporter->SetFilled();
|
---|
2481 |
|
---|
2482 | // output PVS of view cell
|
---|
2483 | for (it = vc->GetPvs().mEntries.begin(); it != it_end; ++ it)
|
---|
2484 | {
|
---|
2485 | Intersectable *intersect = (*it).first;
|
---|
2486 |
|
---|
2487 | if (!intersect->Mailed())
|
---|
2488 | {
|
---|
2489 | Material m = RandomMaterial();
|
---|
2490 | exporter->SetForcedMaterial(m);
|
---|
2491 |
|
---|
2492 | exporter->ExportIntersectable(intersect);
|
---|
2493 | intersect->Mail();
|
---|
2494 | }
|
---|
2495 | }
|
---|
2496 |
|
---|
2497 | DEL_PTR(exporter);
|
---|
2498 | cout << "finished" << endl;
|
---|
2499 | }
|
---|
2500 |
|
---|
2501 | Debug << endl;
|
---|
2502 | }
|
---|
2503 |
|
---|
2504 |
|
---|
2505 | void BspViewCellsManager::ExportColor(Exporter *exporter,
|
---|
2506 | ViewCell *vc) const
|
---|
2507 | {
|
---|
2508 | const bool vcValid = CheckValidity(vc, mMinPvsSize, mMaxPvsSize);
|
---|
2509 |
|
---|
2510 | float importance = 0;
|
---|
2511 | static Material m;
|
---|
2512 |
|
---|
2513 | switch (mColorCode)
|
---|
2514 | {
|
---|
2515 | case 0: // Random
|
---|
2516 | {
|
---|
2517 | if (vcValid)
|
---|
2518 | {
|
---|
2519 | m.mDiffuseColor.r = 0.5f + RandomValue(0.0f, 0.5f);
|
---|
2520 | m.mDiffuseColor.g = 0.5f + RandomValue(0.0f, 0.5f);
|
---|
2521 | m.mDiffuseColor.b = 0.5f + RandomValue(0.0f, 0.5f);
|
---|
2522 | }
|
---|
2523 | else
|
---|
2524 | {
|
---|
2525 | m.mDiffuseColor.r = 0.0f;
|
---|
2526 | m.mDiffuseColor.g = 1.0f;
|
---|
2527 | m.mDiffuseColor.b = 0.0f;
|
---|
2528 | }
|
---|
2529 |
|
---|
2530 | exporter->SetForcedMaterial(m);
|
---|
2531 | return;
|
---|
2532 | }
|
---|
2533 |
|
---|
2534 | case 1: // pvs
|
---|
2535 | {
|
---|
2536 | importance = (float)vc->GetPvs().GetSize() /
|
---|
2537 | (float)mCurrentViewCellsStats.maxPvs;
|
---|
2538 |
|
---|
2539 | }
|
---|
2540 | break;
|
---|
2541 | case 2: // merges
|
---|
2542 | {
|
---|
2543 | int lSize = mViewCellsTree->GetNumInitialViewCells(vc);
|
---|
2544 | importance = (float)lSize / (float)mCurrentViewCellsStats.maxLeaves;
|
---|
2545 | }
|
---|
2546 | //break;
|
---|
2547 | case 3: // merge tree differene
|
---|
2548 | {
|
---|
2549 | // TODO
|
---|
2550 | //importance = (float)GetMaxTreeDiff(vc) /
|
---|
2551 | // (float)(mVspBspTree->GetStatistics().maxDepth * 2);
|
---|
2552 |
|
---|
2553 | }
|
---|
2554 | break;
|
---|
2555 | default:
|
---|
2556 | break;
|
---|
2557 | }
|
---|
2558 |
|
---|
2559 | // special color code for invalid view cells
|
---|
2560 | m.mDiffuseColor.r = importance;
|
---|
2561 | m.mDiffuseColor.g = 1.0f - m.mDiffuseColor.r;
|
---|
2562 | m.mDiffuseColor.b = vcValid ? 1.0f : 0.0f;
|
---|
2563 |
|
---|
2564 | //Debug << "importance: " << importance << endl;
|
---|
2565 | exporter->SetForcedMaterial(m);
|
---|
2566 | }
|
---|
2567 |
|
---|
2568 |
|
---|
2569 | void BspViewCellsManager::TestSubdivision()
|
---|
2570 | {
|
---|
2571 | ViewCellContainer leaves;
|
---|
2572 | mViewCellsTree->CollectLeaves(mViewCellsTree->GetRoot(), leaves);
|
---|
2573 |
|
---|
2574 | ViewCellContainer::const_iterator it, it_end = leaves.end();
|
---|
2575 |
|
---|
2576 | const float vol = mViewSpaceBox.GetVolume();
|
---|
2577 | float subdivVol = 0;
|
---|
2578 | float newVol = 0;
|
---|
2579 |
|
---|
2580 | for (it = leaves.begin(); it != it_end; ++ it)
|
---|
2581 | {
|
---|
2582 | BspNodeGeometry geom;
|
---|
2583 | BspLeaf *leaf = dynamic_cast<BspViewCell *>(*it)->mLeaf;
|
---|
2584 | mBspTree->ConstructGeometry(leaf, geom);
|
---|
2585 |
|
---|
2586 | const float lVol = geom.GetVolume();
|
---|
2587 |
|
---|
2588 | newVol += lVol;
|
---|
2589 | subdivVol += (*it)->GetVolume();
|
---|
2590 |
|
---|
2591 | float thres = 0.9f;
|
---|
2592 | if ((lVol < ((*it)->GetVolume() * thres)) ||
|
---|
2593 | (lVol * thres > ((*it)->GetVolume())))
|
---|
2594 | Debug << "warning: " << lVol << " " << (*it)->GetVolume() << endl;
|
---|
2595 | }
|
---|
2596 |
|
---|
2597 | Debug << "exact volume: " << vol << endl;
|
---|
2598 | Debug << "subdivision volume: " << subdivVol << endl;
|
---|
2599 | Debug << "new volume: " << newVol << endl;
|
---|
2600 | }
|
---|
2601 |
|
---|
2602 |
|
---|
2603 | void BspViewCellsManager::ExportViewCellGeometry(Exporter *exporter,
|
---|
2604 | ViewCell *vc,
|
---|
2605 | const Plane3 *clipPlane) const
|
---|
2606 | {
|
---|
2607 | if (vc->GetMesh())
|
---|
2608 | {
|
---|
2609 | exporter->ExportMesh(vc->GetMesh());
|
---|
2610 |
|
---|
2611 | return;
|
---|
2612 | }
|
---|
2613 |
|
---|
2614 |
|
---|
2615 | if (clipPlane)
|
---|
2616 | {
|
---|
2617 | ViewCellContainer leaves;
|
---|
2618 | mViewCellsTree->CollectLeaves(vc, leaves);
|
---|
2619 | ViewCellContainer::const_iterator it, it_end = leaves.end();
|
---|
2620 |
|
---|
2621 | for (it = leaves.begin(); it != it_end; ++ it)
|
---|
2622 | {
|
---|
2623 | BspNodeGeometry geom;
|
---|
2624 |
|
---|
2625 | BspNodeGeometry front;
|
---|
2626 | BspNodeGeometry back;
|
---|
2627 |
|
---|
2628 | BspLeaf *leaf = dynamic_cast<BspViewCell *>(*it)->mLeaf;
|
---|
2629 | mBspTree->ConstructGeometry(leaf, geom);
|
---|
2630 |
|
---|
2631 | const float eps = 0.00000001f;
|
---|
2632 | const int cf = geom.Side(*clipPlane, eps);
|
---|
2633 |
|
---|
2634 | if (cf == -1)
|
---|
2635 | {
|
---|
2636 | exporter->ExportPolygons(geom.GetPolys());
|
---|
2637 | }
|
---|
2638 | else if (cf == 0)
|
---|
2639 | {
|
---|
2640 | geom.SplitGeometry(front,
|
---|
2641 | back,
|
---|
2642 | *clipPlane,
|
---|
2643 | mViewSpaceBox,
|
---|
2644 | eps);
|
---|
2645 |
|
---|
2646 | //Debug << "geo size: " << geom.Size() << endl;
|
---|
2647 | //Debug << "size b: " << back.Size() << " f: " << front.Size() << endl;
|
---|
2648 | if (back.Valid())
|
---|
2649 | {
|
---|
2650 | exporter->ExportPolygons(back.GetPolys());
|
---|
2651 | }
|
---|
2652 | }
|
---|
2653 | }
|
---|
2654 | }
|
---|
2655 | else
|
---|
2656 | {
|
---|
2657 | BspNodeGeometry geom;
|
---|
2658 | mBspTree->ConstructGeometry(vc, geom);
|
---|
2659 |
|
---|
2660 | exporter->ExportPolygons(geom.GetPolys());
|
---|
2661 | }
|
---|
2662 | }
|
---|
2663 |
|
---|
2664 |
|
---|
2665 | void BspViewCellsManager::CreateMesh(ViewCell *vc)
|
---|
2666 | {
|
---|
2667 | // delete previous mesh
|
---|
2668 | ///DEL_PTR(vc->GetMesh());
|
---|
2669 | BspNodeGeometry geom;
|
---|
2670 | mBspTree->ConstructGeometry(vc, geom);
|
---|
2671 |
|
---|
2672 | Mesh *mesh = new Mesh();
|
---|
2673 |
|
---|
2674 | IncludeNodeGeomInMesh(geom, *mesh);
|
---|
2675 | vc->SetMesh(mesh);
|
---|
2676 |
|
---|
2677 | // put mesh into mesh container so we can savely delete it
|
---|
2678 | mMeshContainer.push_back(mesh);
|
---|
2679 | }
|
---|
2680 |
|
---|
2681 |
|
---|
2682 | void BspViewCellsManager::Finalize(ViewCell *viewCell,
|
---|
2683 | const bool createMesh)
|
---|
2684 | {
|
---|
2685 | float area = 0;
|
---|
2686 | float volume = 0;
|
---|
2687 |
|
---|
2688 | ViewCellContainer leaves;
|
---|
2689 | mViewCellsTree->CollectLeaves(viewCell, leaves);
|
---|
2690 |
|
---|
2691 | ViewCellContainer::const_iterator it, it_end = leaves.end();
|
---|
2692 |
|
---|
2693 | for (it = leaves.begin(); it != it_end; ++ it)
|
---|
2694 | {
|
---|
2695 | BspNodeGeometry geom;
|
---|
2696 | BspLeaf *leaf = dynamic_cast<BspViewCell *>(*it)->mLeaf;
|
---|
2697 | mBspTree->ConstructGeometry(leaf, geom);
|
---|
2698 |
|
---|
2699 | const float lVol = geom.GetVolume();
|
---|
2700 | const float lArea = geom.GetArea();
|
---|
2701 |
|
---|
2702 | //(*it)->SetVolume(vol);
|
---|
2703 | //(*it)->SetArea(area);
|
---|
2704 |
|
---|
2705 | area += lArea;
|
---|
2706 | volume += lVol;
|
---|
2707 |
|
---|
2708 | CreateMesh(*it);
|
---|
2709 | }
|
---|
2710 |
|
---|
2711 | viewCell->SetVolume(volume);
|
---|
2712 | viewCell->SetArea(area);
|
---|
2713 | }
|
---|
2714 |
|
---|
2715 |
|
---|
2716 | ViewCell *BspViewCellsManager::GetViewCell(const Vector3 &point, const bool active) const
|
---|
2717 | {
|
---|
2718 | if (!mBspTree)
|
---|
2719 | return NULL;
|
---|
2720 |
|
---|
2721 | if (!mViewSpaceBox.IsInside(point))
|
---|
2722 | return NULL;
|
---|
2723 |
|
---|
2724 | return mBspTree->GetViewCell(point);
|
---|
2725 | }
|
---|
2726 |
|
---|
2727 |
|
---|
2728 | void BspViewCellsManager::CollectMergeCandidates(const VssRayContainer &rays,
|
---|
2729 | vector<MergeCandidate> &candidates)
|
---|
2730 | {
|
---|
2731 | cout << "collecting merge candidates ... " << endl;
|
---|
2732 |
|
---|
2733 | if (mUseRaysForMerge)
|
---|
2734 | {
|
---|
2735 | mBspTree->CollectMergeCandidates(rays, candidates);
|
---|
2736 | }
|
---|
2737 | else
|
---|
2738 | {
|
---|
2739 | vector<BspLeaf *> leaves;
|
---|
2740 | mBspTree->CollectLeaves(leaves);
|
---|
2741 | mBspTree->CollectMergeCandidates(leaves, candidates);
|
---|
2742 | }
|
---|
2743 |
|
---|
2744 | cout << "fininshed collecting candidates" << endl;
|
---|
2745 | }
|
---|
2746 |
|
---|
2747 |
|
---|
2748 |
|
---|
2749 | bool BspViewCellsManager::ExportViewCells(const string filename, const bool exportPvs, const ObjectContainer &objects)
|
---|
2750 | {
|
---|
2751 | #if STILL_HAS_TODO
|
---|
2752 | cout << "exporting view cells to xml ... ";
|
---|
2753 | std::ofstream stream;
|
---|
2754 |
|
---|
2755 | // for output we need unique ids for each view cell
|
---|
2756 | CreateUniqueViewCellIds();
|
---|
2757 |
|
---|
2758 |
|
---|
2759 | stream.open(filename.c_str());
|
---|
2760 | stream << "<?xml version=\"1.0\" encoding=\"UTF-8\"?>"<<endl;
|
---|
2761 | stream << "<VisibilitySolution>" << endl;
|
---|
2762 |
|
---|
2763 | //-- the view space bounding box
|
---|
2764 | stream << "<ViewSpaceBox"
|
---|
2765 | << " min=\"" << mViewSpaceBox.Min().x << " " << mViewSpaceBox.Min().y << " " << mViewSpaceBox.Min().z << "\""
|
---|
2766 | << " max=\"" << mViewSpaceBox.Max().x << " " << mViewSpaceBox.Max().y << " " << mViewSpaceBox.Max().z << "\" />" << endl;
|
---|
2767 |
|
---|
2768 | //-- the type of the view cells hierarchy
|
---|
2769 |
|
---|
2770 | // NOTE: load in vsp bsp here because bsp and vsp bsp can use same tree and vsp bsp is bug free
|
---|
2771 | stream << "<Hierarchy name=\"vspBspTree\" >" << endl;
|
---|
2772 |
|
---|
2773 | //-- load the view cells itself, i.e., the ids and the pvs
|
---|
2774 | stream << "<ViewCells>" << endl;
|
---|
2775 |
|
---|
2776 | mViewCellsTree->Export(stream, exportPvs);
|
---|
2777 |
|
---|
2778 | stream << "</ViewCells>" << endl;
|
---|
2779 |
|
---|
2780 | //-- load the hierarchy
|
---|
2781 | stream << "<Hierarchy>" << endl;
|
---|
2782 | mBspTree->Export(stream);
|
---|
2783 | stream << endl << "</Hierarchy>" << endl;
|
---|
2784 |
|
---|
2785 | stream << "</VisibilitySolution>" << endl;
|
---|
2786 | stream.close();
|
---|
2787 |
|
---|
2788 | cout << "finished" << endl;
|
---|
2789 | #endif
|
---|
2790 | return true;
|
---|
2791 | }
|
---|
2792 |
|
---|
2793 |
|
---|
2794 | ViewCell *BspViewCellsManager::ConstructSpatialMergeTree(BspNode *root)
|
---|
2795 | {
|
---|
2796 | // terminate recursion
|
---|
2797 | if (root->IsLeaf())
|
---|
2798 | {
|
---|
2799 | BspLeaf *leaf = dynamic_cast<BspLeaf *>(root);
|
---|
2800 | leaf->GetViewCell()->SetMergeCost(0.0f);
|
---|
2801 | return leaf->GetViewCell();
|
---|
2802 | }
|
---|
2803 |
|
---|
2804 | BspInterior *interior = dynamic_cast<BspInterior *>(root);
|
---|
2805 | ViewCellInterior *viewCellInterior = new ViewCellInterior();
|
---|
2806 |
|
---|
2807 | // evaluate merge cost for priority traversal
|
---|
2808 | float mergeCost = 1.0f / (float)root->mTimeStamp;
|
---|
2809 | viewCellInterior->SetMergeCost(mergeCost);
|
---|
2810 |
|
---|
2811 | float volume = 0;
|
---|
2812 |
|
---|
2813 | BspNode *front = interior->GetFront();
|
---|
2814 | BspNode *back = interior->GetBack();
|
---|
2815 |
|
---|
2816 |
|
---|
2817 | //-- recursivly compute child hierarchies
|
---|
2818 | ViewCell *backVc = ConstructSpatialMergeTree(back);
|
---|
2819 | ViewCell *frontVc = ConstructSpatialMergeTree(front);
|
---|
2820 |
|
---|
2821 |
|
---|
2822 | viewCellInterior->SetupChildLink(backVc);
|
---|
2823 | viewCellInterior->SetupChildLink(frontVc);
|
---|
2824 |
|
---|
2825 | volume += backVc->GetVolume();
|
---|
2826 | volume += frontVc->GetVolume();
|
---|
2827 |
|
---|
2828 | viewCellInterior->SetVolume(volume);
|
---|
2829 |
|
---|
2830 | return viewCellInterior;
|
---|
2831 | }
|
---|
2832 |
|
---|
2833 |
|
---|
2834 | void BspViewCellsManager::UpdatePvsForEvaluation(ViewCell *root, ObjectPvs &pvs)
|
---|
2835 | {
|
---|
2836 | // terminate traversal
|
---|
2837 | if (root->IsLeaf())
|
---|
2838 | {
|
---|
2839 | pvs = root->GetPvs();
|
---|
2840 |
|
---|
2841 | root->mPvsSize = pvs.GetSize();
|
---|
2842 | root->mPvsSizeValid = true;
|
---|
2843 |
|
---|
2844 | return;
|
---|
2845 | }
|
---|
2846 |
|
---|
2847 | ViewCellInterior *interior = dynamic_cast<ViewCellInterior *>(root);
|
---|
2848 | ViewCellContainer::const_iterator vit, vit_end = interior->mChildren.end();
|
---|
2849 |
|
---|
2850 | vector<ObjectPvs> pvsList;
|
---|
2851 |
|
---|
2852 |
|
---|
2853 | for (vit = interior->mChildren.begin(); vit != vit_end; ++ vit)
|
---|
2854 | {
|
---|
2855 | ObjectPvs objPvs;
|
---|
2856 |
|
---|
2857 | //-- recursivly compute child pvss
|
---|
2858 | UpdatePvsForEvaluation(*vit, objPvs);
|
---|
2859 |
|
---|
2860 | // store pvs in vector
|
---|
2861 | pvsList.push_back(objPvs);
|
---|
2862 | }
|
---|
2863 |
|
---|
2864 | #if 1
|
---|
2865 | Intersectable::NewMail();
|
---|
2866 |
|
---|
2867 | //-- faster way of computing pvs:
|
---|
2868 | // construct merged pvs by adding
|
---|
2869 | // and only those of the next pvs which were not mailed.
|
---|
2870 | // note: sumpdf is not correct!!
|
---|
2871 | vector<ObjectPvs>::iterator oit = pvsList.begin();
|
---|
2872 |
|
---|
2873 | for (vit = interior->mChildren.begin(); vit != vit_end; ++ vit, ++ oit)
|
---|
2874 | {
|
---|
2875 |
|
---|
2876 | ObjectPvsMap::iterator pit, pit_end = (*oit).mEntries.end();
|
---|
2877 |
|
---|
2878 | for (pit = (*oit).mEntries.begin(); pit != pit_end; ++ pit)
|
---|
2879 | {
|
---|
2880 |
|
---|
2881 | Intersectable *intersect = (*pit).first;
|
---|
2882 |
|
---|
2883 | if (!intersect->Mailed())
|
---|
2884 | {
|
---|
2885 | pvs.AddSample(intersect, (*pit).second.mSumPdf);
|
---|
2886 | intersect->Mail();
|
---|
2887 | }
|
---|
2888 | }
|
---|
2889 | }
|
---|
2890 |
|
---|
2891 | // store pvs in this node
|
---|
2892 | if (mViewCellsTree->ViewCellsStorage() == ViewCellsTree::PVS_IN_INTERIORS)
|
---|
2893 | {
|
---|
2894 | interior->mPvs = pvs;
|
---|
2895 | }
|
---|
2896 |
|
---|
2897 | // set new pvs size
|
---|
2898 | interior->mPvsSize = pvs.GetSize();
|
---|
2899 | interior->mPvsSizeValid = true;
|
---|
2900 |
|
---|
2901 | #else
|
---|
2902 | // really merge cells: slow put sumpdf is correct
|
---|
2903 | ViewCellInterior *viewCellInterior = new ViewCellInterior();
|
---|
2904 |
|
---|
2905 | viewCellInterior->GetPvs().Merge(backVc->GetPvs());
|
---|
2906 | viewCellInterior->GetPvs().Merge(frontVc->GetPvs());
|
---|
2907 | #endif
|
---|
2908 |
|
---|
2909 | }
|
---|
2910 |
|
---|
2911 | /************************************************************************/
|
---|
2912 | /* KdViewCellsManager implementation */
|
---|
2913 | /************************************************************************/
|
---|
2914 |
|
---|
2915 |
|
---|
2916 |
|
---|
2917 | KdViewCellsManager::KdViewCellsManager(KdTree *kdTree, Environment *env):
|
---|
2918 | ViewCellsManager(env), mKdTree(kdTree), mKdPvsDepth(100)
|
---|
2919 | {
|
---|
2920 | }
|
---|
2921 |
|
---|
2922 |
|
---|
2923 | float KdViewCellsManager::GetProbability(ViewCell *viewCell)
|
---|
2924 | {
|
---|
2925 | // compute view cell area / volume as subsititute for probability
|
---|
2926 | if (0)
|
---|
2927 | return GetArea(viewCell) / GetViewSpaceBox().SurfaceArea();
|
---|
2928 | else
|
---|
2929 | return GetVolume(viewCell) / GetViewSpaceBox().GetVolume();
|
---|
2930 | }
|
---|
2931 |
|
---|
2932 |
|
---|
2933 |
|
---|
2934 |
|
---|
2935 | void KdViewCellsManager::CollectViewCells()
|
---|
2936 | {
|
---|
2937 | //mKdTree->CollectViewCells(mViewCells); TODO
|
---|
2938 | }
|
---|
2939 |
|
---|
2940 |
|
---|
2941 | int KdViewCellsManager::ConstructSubdivision(const ObjectContainer &objects,
|
---|
2942 | const VssRayContainer &rays)
|
---|
2943 | {
|
---|
2944 | // if view cells already constructed
|
---|
2945 | if (ViewCellsConstructed())
|
---|
2946 | return 0;
|
---|
2947 |
|
---|
2948 | mKdTree->Construct();
|
---|
2949 |
|
---|
2950 | mTotalAreaValid = false;
|
---|
2951 | // create the view cells
|
---|
2952 | mKdTree->CreateAndCollectViewCells(mViewCells);
|
---|
2953 |
|
---|
2954 | // cast rays
|
---|
2955 | ComputeSampleContributions(rays, true, false);
|
---|
2956 |
|
---|
2957 | EvaluateViewCellsStats();
|
---|
2958 | Debug << "\nView cells after construction:\n" << mCurrentViewCellsStats << endl;
|
---|
2959 |
|
---|
2960 | return 0;
|
---|
2961 | }
|
---|
2962 |
|
---|
2963 |
|
---|
2964 | bool KdViewCellsManager::ViewCellsConstructed() const
|
---|
2965 | {
|
---|
2966 | return mKdTree->GetRoot() != NULL;
|
---|
2967 | }
|
---|
2968 |
|
---|
2969 | int KdViewCellsManager::PostProcess(const ObjectContainer &objects,
|
---|
2970 | const VssRayContainer &rays)
|
---|
2971 | {
|
---|
2972 | return 0;
|
---|
2973 | }
|
---|
2974 |
|
---|
2975 | void KdViewCellsManager::Visualize(const ObjectContainer &objects,
|
---|
2976 | const VssRayContainer &sampleRays)
|
---|
2977 | {
|
---|
2978 | if (!ViewCellsConstructed())
|
---|
2979 | return;
|
---|
2980 |
|
---|
2981 | // using view cells instead of the kd PVS of objects
|
---|
2982 | const bool useViewCells = true;
|
---|
2983 | bool exportRays = false;
|
---|
2984 |
|
---|
2985 | int limit = min(mVisualizationSamples, (int)sampleRays.size());
|
---|
2986 | const int pvsOut = min((int)objects.size(), 10);
|
---|
2987 | VssRayContainer *rays = new VssRayContainer[pvsOut];
|
---|
2988 |
|
---|
2989 | if (useViewCells)
|
---|
2990 | {
|
---|
2991 | const int leafOut = 10;
|
---|
2992 |
|
---|
2993 | ViewCell::NewMail();
|
---|
2994 |
|
---|
2995 | //-- some rays for output
|
---|
2996 | const int raysOut = min((int)sampleRays.size(), mVisualizationSamples);
|
---|
2997 | Debug << "visualization using " << raysOut << " samples" << endl;
|
---|
2998 |
|
---|
2999 | //-- some random view cells and rays for output
|
---|
3000 | vector<KdLeaf *> kdLeaves;
|
---|
3001 |
|
---|
3002 | for (int i = 0; i < leafOut; ++ i)
|
---|
3003 | kdLeaves.push_back(dynamic_cast<KdLeaf *>(mKdTree->GetRandomLeaf()));
|
---|
3004 |
|
---|
3005 | for (int i = 0; i < kdLeaves.size(); ++ i)
|
---|
3006 | {
|
---|
3007 | KdLeaf *leaf = kdLeaves[i];
|
---|
3008 | RayContainer vcRays;
|
---|
3009 |
|
---|
3010 | cout << "creating output for view cell " << i << " ... ";
|
---|
3011 | #if 0
|
---|
3012 | // check whether we can add the current ray to the output rays
|
---|
3013 | for (int k = 0; k < raysOut; ++ k)
|
---|
3014 | {
|
---|
3015 | Ray *ray = sampleRays[k];
|
---|
3016 |
|
---|
3017 | for (int j = 0; j < (int)ray->bspIntersections.size(); ++ j)
|
---|
3018 | {
|
---|
3019 | BspLeaf *leaf2 = ray->bspIntersections[j].mLeaf;
|
---|
3020 |
|
---|
3021 | if (leaf->GetViewCell() == leaf2->GetViewCell())
|
---|
3022 | {
|
---|
3023 | vcRays.push_back(ray);
|
---|
3024 | }
|
---|
3025 | }
|
---|
3026 | }
|
---|
3027 | #endif
|
---|
3028 | Intersectable::NewMail();
|
---|
3029 |
|
---|
3030 | ViewCell *vc = leaf->mViewCell;
|
---|
3031 |
|
---|
3032 | //bspLeaves[j]->Mail();
|
---|
3033 | char s[64]; sprintf(s, "kd-pvs%04d.x3d", i);
|
---|
3034 |
|
---|
3035 | Exporter *exporter = Exporter::GetExporter(s);
|
---|
3036 | exporter->SetFilled();
|
---|
3037 |
|
---|
3038 | exporter->SetWireframe();
|
---|
3039 | //exporter->SetFilled();
|
---|
3040 |
|
---|
3041 | Material m;//= RandomMaterial();
|
---|
3042 | m.mDiffuseColor = RgbColor(1, 1, 0);
|
---|
3043 | exporter->SetForcedMaterial(m);
|
---|
3044 |
|
---|
3045 | AxisAlignedBox3 box = mKdTree->GetBox(leaf);
|
---|
3046 | exporter->ExportBox(box);
|
---|
3047 |
|
---|
3048 | // export rays piercing this view cell
|
---|
3049 | exporter->ExportRays(vcRays, 1000, RgbColor(0, 1, 0));
|
---|
3050 |
|
---|
3051 | m.mDiffuseColor = RgbColor(1, 0, 0);
|
---|
3052 | exporter->SetForcedMaterial(m);
|
---|
3053 |
|
---|
3054 | // exporter->SetWireframe();
|
---|
3055 | exporter->SetFilled();
|
---|
3056 |
|
---|
3057 | ObjectPvsMap::iterator it, it_end = vc->GetPvs().mEntries.end();
|
---|
3058 | // -- output PVS of view cell
|
---|
3059 | for (it = vc->GetPvs().mEntries.begin(); it != it_end; ++ it)
|
---|
3060 | {
|
---|
3061 | Intersectable *intersect = (*it).first;
|
---|
3062 | if (!intersect->Mailed())
|
---|
3063 | {
|
---|
3064 | exporter->ExportIntersectable(intersect);
|
---|
3065 | intersect->Mail();
|
---|
3066 | }
|
---|
3067 | }
|
---|
3068 |
|
---|
3069 | DEL_PTR(exporter);
|
---|
3070 | cout << "finished" << endl;
|
---|
3071 | }
|
---|
3072 |
|
---|
3073 | DEL_PTR(rays);
|
---|
3074 | }
|
---|
3075 | else // using kd PVS of objects
|
---|
3076 | {
|
---|
3077 | for (int i = 0; i < limit; ++ i)
|
---|
3078 | {
|
---|
3079 | VssRay *ray = sampleRays[i];
|
---|
3080 |
|
---|
3081 | // check whether we can add this to the rays
|
---|
3082 | for (int j = 0; j < pvsOut; j++)
|
---|
3083 | {
|
---|
3084 | if (objects[j] == ray->mTerminationObject)
|
---|
3085 | {
|
---|
3086 | rays[j].push_back(ray);
|
---|
3087 | }
|
---|
3088 | }
|
---|
3089 | }
|
---|
3090 |
|
---|
3091 | if (exportRays)
|
---|
3092 | {
|
---|
3093 | Exporter *exporter = NULL;
|
---|
3094 | exporter = Exporter::GetExporter("sample-rays.x3d");
|
---|
3095 | exporter->SetWireframe();
|
---|
3096 | exporter->ExportKdTree(*mKdTree);
|
---|
3097 |
|
---|
3098 | for (i = 0; i < pvsOut; i++)
|
---|
3099 | exporter->ExportRays(rays[i], RgbColor(1, 0, 0));
|
---|
3100 |
|
---|
3101 | exporter->SetFilled();
|
---|
3102 |
|
---|
3103 | delete exporter;
|
---|
3104 | }
|
---|
3105 |
|
---|
3106 | for (int k=0; k < pvsOut; k++)
|
---|
3107 | {
|
---|
3108 | Intersectable *object = objects[k];
|
---|
3109 | char s[64];
|
---|
3110 | sprintf(s, "sample-pvs%04d.x3d", k);
|
---|
3111 |
|
---|
3112 | Exporter *exporter = Exporter::GetExporter(s);
|
---|
3113 | exporter->SetWireframe();
|
---|
3114 |
|
---|
3115 | KdPvsMap::iterator i = object->mKdPvs.mEntries.begin();
|
---|
3116 | Intersectable::NewMail();
|
---|
3117 |
|
---|
3118 | // avoid adding the object to the list
|
---|
3119 | object->Mail();
|
---|
3120 | ObjectContainer visibleObjects;
|
---|
3121 |
|
---|
3122 | for (; i != object->mKdPvs.mEntries.end(); i++)
|
---|
3123 | {
|
---|
3124 | KdNode *node = (*i).first;
|
---|
3125 | exporter->ExportBox(mKdTree->GetBox(node));
|
---|
3126 |
|
---|
3127 | mKdTree->CollectObjects(node, visibleObjects);
|
---|
3128 | }
|
---|
3129 |
|
---|
3130 | exporter->ExportRays(rays[k], RgbColor(0, 1, 0));
|
---|
3131 | exporter->SetFilled();
|
---|
3132 |
|
---|
3133 | for (int j = 0; j < visibleObjects.size(); j++)
|
---|
3134 | exporter->ExportIntersectable(visibleObjects[j]);
|
---|
3135 |
|
---|
3136 | Material m;
|
---|
3137 | m.mDiffuseColor = RgbColor(1, 0, 0);
|
---|
3138 | exporter->SetForcedMaterial(m);
|
---|
3139 | exporter->ExportIntersectable(object);
|
---|
3140 |
|
---|
3141 | delete exporter;
|
---|
3142 | }
|
---|
3143 | }
|
---|
3144 | }
|
---|
3145 |
|
---|
3146 |
|
---|
3147 | void KdViewCellsManager::ExportColor(Exporter *exporter,
|
---|
3148 | ViewCell *vc) const
|
---|
3149 | {
|
---|
3150 | // TODO
|
---|
3151 | }
|
---|
3152 |
|
---|
3153 |
|
---|
3154 | ViewCell *KdViewCellsManager::GenerateViewCell(Mesh *mesh) const
|
---|
3155 | {
|
---|
3156 | return new KdViewCell(mesh);
|
---|
3157 | }
|
---|
3158 |
|
---|
3159 |
|
---|
3160 | void KdViewCellsManager::ExportViewCellGeometry(Exporter *exporter,
|
---|
3161 | ViewCell *vc,
|
---|
3162 | const Plane3 *clipPlane) const
|
---|
3163 | {
|
---|
3164 | ViewCellContainer leaves;
|
---|
3165 |
|
---|
3166 | mViewCellsTree->CollectLeaves(vc, leaves);
|
---|
3167 | ViewCellContainer::const_iterator it, it_end = leaves.end();
|
---|
3168 |
|
---|
3169 | for (it = leaves.begin(); it != it_end; ++ it)
|
---|
3170 | {
|
---|
3171 | KdViewCell *kdVc = dynamic_cast<KdViewCell *>(*it);
|
---|
3172 |
|
---|
3173 | exporter->ExportBox(mKdTree->GetBox(kdVc->mLeaf));
|
---|
3174 | }
|
---|
3175 | }
|
---|
3176 |
|
---|
3177 |
|
---|
3178 | int KdViewCellsManager::GetType() const
|
---|
3179 | {
|
---|
3180 | return ViewCellsManager::KD;
|
---|
3181 | }
|
---|
3182 |
|
---|
3183 |
|
---|
3184 |
|
---|
3185 | KdNode *KdViewCellsManager::GetNodeForPvs(KdLeaf *leaf)
|
---|
3186 | {
|
---|
3187 | KdNode *node = leaf;
|
---|
3188 |
|
---|
3189 | while (node->mParent && node->mDepth > mKdPvsDepth)
|
---|
3190 | node = node->mParent;
|
---|
3191 | return node;
|
---|
3192 | }
|
---|
3193 |
|
---|
3194 | int KdViewCellsManager::CastLineSegment(const Vector3 &origin,
|
---|
3195 | const Vector3 &termination,
|
---|
3196 | ViewCellContainer &viewcells)
|
---|
3197 | {
|
---|
3198 | return mKdTree->CastLineSegment(origin, termination, viewcells);
|
---|
3199 | }
|
---|
3200 |
|
---|
3201 |
|
---|
3202 | void KdViewCellsManager::CreateMesh(ViewCell *vc)
|
---|
3203 | {
|
---|
3204 | // TODO
|
---|
3205 | }
|
---|
3206 |
|
---|
3207 |
|
---|
3208 |
|
---|
3209 | void KdViewCellsManager::CollectMergeCandidates(const VssRayContainer &rays,
|
---|
3210 | vector<MergeCandidate> &candidates)
|
---|
3211 | {
|
---|
3212 | // TODO
|
---|
3213 | }
|
---|
3214 |
|
---|
3215 |
|
---|
3216 | /**********************************************************************/
|
---|
3217 | /* VspKdViewCellsManager implementation */
|
---|
3218 | /**********************************************************************/
|
---|
3219 |
|
---|
3220 |
|
---|
3221 | VspKdViewCellsManager::VspKdViewCellsManager(VspKdTree *vspKdTree, Environment *env):
|
---|
3222 | ViewCellsManager(env), mVspKdTree(vspKdTree)
|
---|
3223 | {
|
---|
3224 | mEnvironment->GetIntValue("VspKdTree.Construction.samples", mInitialSamples);
|
---|
3225 | mVspKdTree->SetViewCellsManager(this);
|
---|
3226 | }
|
---|
3227 |
|
---|
3228 | float VspKdViewCellsManager::GetProbability(ViewCell *viewCell)
|
---|
3229 | {
|
---|
3230 | // compute view cell area / volume as subsititute for probability
|
---|
3231 | if (0)
|
---|
3232 | return GetArea(viewCell) / GetViewSpaceBox().SurfaceArea();
|
---|
3233 | else
|
---|
3234 | return GetVolume(viewCell) / GetViewSpaceBox().GetVolume();
|
---|
3235 | }
|
---|
3236 |
|
---|
3237 |
|
---|
3238 |
|
---|
3239 |
|
---|
3240 | void VspKdViewCellsManager::CollectViewCells()
|
---|
3241 | {
|
---|
3242 | mVspKdTree->CollectViewCells(mViewCells);
|
---|
3243 | }
|
---|
3244 |
|
---|
3245 |
|
---|
3246 | int VspKdViewCellsManager::ConstructSubdivision(const ObjectContainer &objects,
|
---|
3247 | const VssRayContainer &rays)
|
---|
3248 | {
|
---|
3249 | // if view cells already constructed
|
---|
3250 | if (ViewCellsConstructed())
|
---|
3251 | return 0;
|
---|
3252 |
|
---|
3253 | VssRayContainer constructionRays;
|
---|
3254 | VssRayContainer savedRays;
|
---|
3255 |
|
---|
3256 | GetRaySets(rays,
|
---|
3257 | mInitialSamples,
|
---|
3258 | constructionRays,
|
---|
3259 | &savedRays);
|
---|
3260 |
|
---|
3261 | Debug << "constructing vsp kd tree using "
|
---|
3262 | << (int)constructionRays.size() << " samples" << endl;
|
---|
3263 |
|
---|
3264 | mVspKdTree->Construct(constructionRays, &mViewSpaceBox);
|
---|
3265 | Debug << mVspKdTree->GetStatistics() << endl;
|
---|
3266 |
|
---|
3267 | // export leaf building blocks
|
---|
3268 | ExportLeaves(objects, rays);
|
---|
3269 |
|
---|
3270 | // finally merge kd leaf building blocks to view cells
|
---|
3271 | const int merged = mVspKdTree->MergeViewCells(rays);
|
---|
3272 |
|
---|
3273 | // collapse siblings belonging to the same view cell
|
---|
3274 | mVspKdTree->RefineViewCells(rays);
|
---|
3275 |
|
---|
3276 | // collapse siblings belonging to the same view cell
|
---|
3277 | mVspKdTree->CollapseTree();
|
---|
3278 |
|
---|
3279 | // evaluale view cell stats
|
---|
3280 | ResetViewCells();
|
---|
3281 |
|
---|
3282 | Debug << "\nView cells after construction:\n" << mCurrentViewCellsStats << endl;
|
---|
3283 |
|
---|
3284 | long startTime = GetTime();
|
---|
3285 |
|
---|
3286 | // recast rest of rays
|
---|
3287 | ComputeSampleContributions(savedRays, true, false);
|
---|
3288 |
|
---|
3289 | Debug << "Computed remaining ray contribution in " << TimeDiff(startTime, GetTime()) * 1e-3
|
---|
3290 | << " secs" << endl;
|
---|
3291 |
|
---|
3292 | return merged;
|
---|
3293 | }
|
---|
3294 |
|
---|
3295 | bool VspKdViewCellsManager::ViewCellsConstructed() const
|
---|
3296 | {
|
---|
3297 | return mVspKdTree->GetRoot() != NULL;
|
---|
3298 | }
|
---|
3299 |
|
---|
3300 |
|
---|
3301 | ViewCell *VspKdViewCellsManager::GenerateViewCell(Mesh *mesh) const
|
---|
3302 | {
|
---|
3303 | return new VspKdViewCell(mesh);
|
---|
3304 | }
|
---|
3305 |
|
---|
3306 | int VspKdViewCellsManager::PostProcess(const ObjectContainer &objects,
|
---|
3307 | const VssRayContainer &rays)
|
---|
3308 | {
|
---|
3309 | if (!ViewCellsConstructed())
|
---|
3310 | return 0;
|
---|
3311 |
|
---|
3312 | // recalculate stats
|
---|
3313 | EvaluateViewCellsStats();
|
---|
3314 |
|
---|
3315 | return 0;
|
---|
3316 | }
|
---|
3317 |
|
---|
3318 |
|
---|
3319 | void VspKdViewCellsManager::ExportLeaves(const ObjectContainer &objects,
|
---|
3320 | const VssRayContainer &sampleRays)
|
---|
3321 | {
|
---|
3322 | if (!ViewCellsConstructed())
|
---|
3323 | return;
|
---|
3324 |
|
---|
3325 | //-- export leaf building blocks
|
---|
3326 | Exporter *exporter = Exporter::GetExporter("vspkdtree.x3d");
|
---|
3327 | if (!exporter)
|
---|
3328 | return;
|
---|
3329 |
|
---|
3330 | if (mExportGeometry)
|
---|
3331 | exporter->ExportGeometry(objects);
|
---|
3332 |
|
---|
3333 | //exporter->SetWireframe();
|
---|
3334 | //exporter->ExportVspKdTree(*mVspKdTree, mVspKdTree->GetStatistics().maxPvsSize);
|
---|
3335 | exporter->ExportVspKdTree(*mVspKdTree);
|
---|
3336 |
|
---|
3337 | if (mExportRays)
|
---|
3338 | {
|
---|
3339 | const float prob = (float)mVisualizationSamples
|
---|
3340 | / ((float)sampleRays.size() + Limits::Small);
|
---|
3341 |
|
---|
3342 | exporter->SetWireframe();
|
---|
3343 |
|
---|
3344 | //-- collect uniformly distributed rays
|
---|
3345 | VssRayContainer rays;
|
---|
3346 |
|
---|
3347 | for (int i = 0; i < sampleRays.size(); ++ i)
|
---|
3348 | {
|
---|
3349 | if (RandomValue(0,1) < prob)
|
---|
3350 | rays.push_back(sampleRays[i]);
|
---|
3351 | }
|
---|
3352 | exporter->ExportRays(rays, RgbColor(1, 0, 0));
|
---|
3353 | }
|
---|
3354 |
|
---|
3355 | delete exporter;
|
---|
3356 | }
|
---|
3357 |
|
---|
3358 |
|
---|
3359 | void VspKdViewCellsManager::Visualize(const ObjectContainer &objects,
|
---|
3360 | const VssRayContainer &sampleRays)
|
---|
3361 | {
|
---|
3362 | if (!ViewCellsConstructed())
|
---|
3363 | return;
|
---|
3364 |
|
---|
3365 | //-- export single view cells
|
---|
3366 | for (int i = 0; i < 10; ++ i)
|
---|
3367 | {
|
---|
3368 | char s[64];
|
---|
3369 | sprintf(s, "vsp_viewcell%04d.x3d", i);
|
---|
3370 | Exporter *exporter = Exporter::GetExporter(s);
|
---|
3371 | const int idx =
|
---|
3372 | (int)RandomValue(0.0, (Real)((int)mViewCells.size() - 1));
|
---|
3373 |
|
---|
3374 | VspKdViewCell *vc = dynamic_cast<VspKdViewCell *>(mViewCells[idx]);
|
---|
3375 |
|
---|
3376 | //-- export geometry
|
---|
3377 | Material m;
|
---|
3378 | m.mDiffuseColor = RgbColor(0, 1, 1);
|
---|
3379 |
|
---|
3380 | exporter->SetForcedMaterial(m);
|
---|
3381 | exporter->SetWireframe();
|
---|
3382 |
|
---|
3383 | ExportViewCellGeometry(exporter, vc);
|
---|
3384 |
|
---|
3385 | //-- export stored rays
|
---|
3386 |
|
---|
3387 | if (mExportRays)
|
---|
3388 | {
|
---|
3389 | ViewCellContainer leaves;
|
---|
3390 | mViewCellsTree->CollectLeaves(vc, leaves);
|
---|
3391 |
|
---|
3392 | ViewCellContainer::const_iterator it,
|
---|
3393 | it_end = leaves.end();
|
---|
3394 |
|
---|
3395 | for (it = leaves.begin(); it != it_end; ++ it)
|
---|
3396 | {
|
---|
3397 | VspKdViewCell *vspKdVc = dynamic_cast<VspKdViewCell *>(*it);
|
---|
3398 | VspKdLeaf *leaf = vspKdVc->mLeaf;
|
---|
3399 | AxisAlignedBox3 box = mVspKdTree->GetBBox(leaf);
|
---|
3400 |
|
---|
3401 | VssRayContainer vssRays;
|
---|
3402 |
|
---|
3403 | VssRayContainer castRays;
|
---|
3404 | VssRayContainer initRays;
|
---|
3405 |
|
---|
3406 | leaf->GetRays(vssRays);
|
---|
3407 |
|
---|
3408 | VssRayContainer::const_iterator it, it_end = vssRays.end();
|
---|
3409 | const float prop = 200.0f / (float)vssRays.size();
|
---|
3410 |
|
---|
3411 | for (it = vssRays.begin(); it != it_end; ++ it)
|
---|
3412 | {
|
---|
3413 | if (Random(1) < prop)
|
---|
3414 | if ((*it)->mTerminationObject == NULL)
|
---|
3415 | castRays.push_back(*it);
|
---|
3416 | else
|
---|
3417 | initRays.push_back(*it);
|
---|
3418 | }
|
---|
3419 |
|
---|
3420 | exporter->ExportRays(castRays, RgbColor(1, 0, 0));
|
---|
3421 | exporter->ExportRays(initRays, RgbColor(0, 1, 0));
|
---|
3422 | }
|
---|
3423 | }
|
---|
3424 |
|
---|
3425 | //-- output PVS of view cell
|
---|
3426 | m.mDiffuseColor = RgbColor(1, 0, 0);
|
---|
3427 | exporter->SetForcedMaterial(m);
|
---|
3428 |
|
---|
3429 | Intersectable::NewMail();
|
---|
3430 |
|
---|
3431 | ObjectPvsMap::const_iterator it,
|
---|
3432 | it_end = vc->GetPvs().mEntries.end();
|
---|
3433 |
|
---|
3434 | exporter->SetFilled();
|
---|
3435 |
|
---|
3436 | for (it = vc->GetPvs().mEntries.begin(); it != it_end; ++ it)
|
---|
3437 | {
|
---|
3438 | Intersectable *intersect = (*it).first;
|
---|
3439 |
|
---|
3440 | if (!intersect->Mailed())
|
---|
3441 | {
|
---|
3442 | Material m = RandomMaterial();
|
---|
3443 | exporter->SetForcedMaterial(m);
|
---|
3444 |
|
---|
3445 | exporter->ExportIntersectable(intersect);
|
---|
3446 | intersect->Mail();
|
---|
3447 | }
|
---|
3448 | }
|
---|
3449 |
|
---|
3450 | delete exporter;
|
---|
3451 | }
|
---|
3452 |
|
---|
3453 | //-- export final view cells
|
---|
3454 | Exporter *exporter = Exporter::GetExporter("vspkdtree_merged.x3d");
|
---|
3455 |
|
---|
3456 |
|
---|
3457 | ExportViewCellsForViz(exporter);
|
---|
3458 |
|
---|
3459 | if (mExportGeometry)
|
---|
3460 | {
|
---|
3461 | exporter->SetFilled();
|
---|
3462 | exporter->ExportGeometry(objects);
|
---|
3463 | }
|
---|
3464 |
|
---|
3465 | if (mExportRays)
|
---|
3466 | {
|
---|
3467 | const float prob = (float)mVisualizationSamples
|
---|
3468 | / ((float)sampleRays.size() + Limits::Small);
|
---|
3469 |
|
---|
3470 | exporter->SetWireframe();
|
---|
3471 |
|
---|
3472 | VssRayContainer rays;
|
---|
3473 |
|
---|
3474 | for (int i = 0; i < sampleRays.size(); ++ i)
|
---|
3475 | {
|
---|
3476 | if (RandomValue(0,1) < prob)
|
---|
3477 | rays.push_back(sampleRays[i]);
|
---|
3478 | }
|
---|
3479 | exporter->ExportRays(rays, RgbColor(1, 0, 0));
|
---|
3480 | }
|
---|
3481 |
|
---|
3482 | delete exporter;
|
---|
3483 | }
|
---|
3484 |
|
---|
3485 | int VspKdViewCellsManager::GetType() const
|
---|
3486 | {
|
---|
3487 | return VSP_KD;
|
---|
3488 | }
|
---|
3489 |
|
---|
3490 |
|
---|
3491 | int VspKdViewCellsManager::CastLineSegment(const Vector3 &origin,
|
---|
3492 | const Vector3 &termination,
|
---|
3493 | ViewCellContainer &viewcells)
|
---|
3494 | {
|
---|
3495 | return mVspKdTree->CastLineSegment(origin, termination, viewcells);
|
---|
3496 | }
|
---|
3497 |
|
---|
3498 |
|
---|
3499 | void VspKdViewCellsManager::ExportColor(Exporter *exporter,
|
---|
3500 | ViewCell *vc) const
|
---|
3501 | {
|
---|
3502 | if (mColorCode == 0) // Random color
|
---|
3503 | return;
|
---|
3504 |
|
---|
3505 | float importance = 0;
|
---|
3506 |
|
---|
3507 | switch (mColorCode)
|
---|
3508 | {
|
---|
3509 | case 1: // pvs
|
---|
3510 | {
|
---|
3511 | importance = (float)mViewCellsTree->GetPvsSize(vc) /
|
---|
3512 | (float)mCurrentViewCellsStats.maxPvs;
|
---|
3513 | }
|
---|
3514 | break;
|
---|
3515 | case 2: // merged leaves
|
---|
3516 | {
|
---|
3517 | const int lSize = mViewCellsTree->GetNumInitialViewCells(vc);
|
---|
3518 | importance = (float)lSize /
|
---|
3519 | (float)mCurrentViewCellsStats.maxLeaves;
|
---|
3520 | }
|
---|
3521 | break;
|
---|
3522 | case 3: // merged tree depth difference
|
---|
3523 | {
|
---|
3524 | //importance = (float)GetMaxTreeDiff(vc) /
|
---|
3525 | // (float)(mVspBspTree->GetStatistics().maxDepth * 2);
|
---|
3526 | }
|
---|
3527 | break;
|
---|
3528 | default:
|
---|
3529 | break;
|
---|
3530 | }
|
---|
3531 |
|
---|
3532 | Material m;
|
---|
3533 | m.mDiffuseColor.b = 1.0f;
|
---|
3534 | m.mDiffuseColor.r = importance;
|
---|
3535 | m.mDiffuseColor.g = 1.0f - m.mDiffuseColor.r;
|
---|
3536 | //Debug << "importance: " << importance << endl;
|
---|
3537 | exporter->SetForcedMaterial(m);
|
---|
3538 | }
|
---|
3539 |
|
---|
3540 |
|
---|
3541 | void VspKdViewCellsManager::ExportViewCellGeometry(Exporter *exporter,
|
---|
3542 | ViewCell *vc,
|
---|
3543 | const Plane3 *clipPlane) const
|
---|
3544 | {
|
---|
3545 | VspKdViewCell *kdVc = dynamic_cast<VspKdViewCell *>(vc);
|
---|
3546 |
|
---|
3547 | Mesh m;
|
---|
3548 |
|
---|
3549 | ViewCellContainer leaves;
|
---|
3550 | mViewCellsTree->CollectLeaves(vc, leaves);
|
---|
3551 |
|
---|
3552 | ViewCellContainer::const_iterator it, it_end = leaves.end();
|
---|
3553 |
|
---|
3554 | for (it = leaves.begin(); it != it_end; ++ it)
|
---|
3555 | {
|
---|
3556 | VspKdLeaf *l = dynamic_cast<VspKdViewCell *>(*it)->mLeaf;
|
---|
3557 | IncludeBoxInMesh(mVspKdTree->GetBBox(l), m);
|
---|
3558 | }
|
---|
3559 |
|
---|
3560 | exporter->ExportMesh(&m);
|
---|
3561 | }
|
---|
3562 |
|
---|
3563 |
|
---|
3564 | void VspKdViewCellsManager::CreateMesh(ViewCell *vc)
|
---|
3565 | {
|
---|
3566 | //TODO
|
---|
3567 | }
|
---|
3568 |
|
---|
3569 |
|
---|
3570 | void VspKdViewCellsManager::CollectMergeCandidates(const VssRayContainer &rays,
|
---|
3571 | vector<MergeCandidate> &candidates)
|
---|
3572 | {
|
---|
3573 | // TODO
|
---|
3574 | }
|
---|
3575 |
|
---|
3576 |
|
---|
3577 | /**************************************************************************/
|
---|
3578 | /* VspBspViewCellsManager implementation */
|
---|
3579 | /**************************************************************************/
|
---|
3580 |
|
---|
3581 |
|
---|
3582 | VspBspViewCellsManager::VspBspViewCellsManager(VspBspTree *vspBspTree, Environment *env):
|
---|
3583 | ViewCellsManager(env), mVspBspTree(vspBspTree)
|
---|
3584 | {
|
---|
3585 | mEnvironment->GetIntValue("VspBspTree.Construction.samples", mInitialSamples);
|
---|
3586 | mVspBspTree->SetViewCellsManager(this);
|
---|
3587 | mVspBspTree->mViewCellsTree = mViewCellsTree;
|
---|
3588 | }
|
---|
3589 |
|
---|
3590 |
|
---|
3591 | VspBspViewCellsManager::~VspBspViewCellsManager()
|
---|
3592 | {
|
---|
3593 | }
|
---|
3594 |
|
---|
3595 |
|
---|
3596 | float VspBspViewCellsManager::GetProbability(ViewCell *viewCell)
|
---|
3597 | {
|
---|
3598 | if (0 && mVspBspTree->mUseAreaForPvs)
|
---|
3599 | return GetArea(viewCell) / GetAccVcArea();
|
---|
3600 | else
|
---|
3601 | return GetVolume(viewCell) / mViewSpaceBox.GetVolume();
|
---|
3602 | }
|
---|
3603 |
|
---|
3604 |
|
---|
3605 | void VspBspViewCellsManager::CollectViewCells()
|
---|
3606 | {
|
---|
3607 | // view cells tree constructed
|
---|
3608 | if (!ViewCellsTreeConstructed())
|
---|
3609 | {
|
---|
3610 | mVspBspTree->CollectViewCells(mViewCells, false);
|
---|
3611 | }
|
---|
3612 | else
|
---|
3613 | { // we can use the view cells tree hierarchy to get the right set
|
---|
3614 | mViewCellsTree->CollectBestViewCellSet(mViewCells, mNumActiveViewCells);
|
---|
3615 | }
|
---|
3616 | }
|
---|
3617 |
|
---|
3618 |
|
---|
3619 | bool VspBspViewCellsManager::ViewCellsConstructed() const
|
---|
3620 | {
|
---|
3621 | return mVspBspTree->GetRoot() != NULL;
|
---|
3622 | }
|
---|
3623 |
|
---|
3624 |
|
---|
3625 | ViewCell *VspBspViewCellsManager::GenerateViewCell(Mesh *mesh) const
|
---|
3626 | {
|
---|
3627 | return new BspViewCell(mesh);
|
---|
3628 | }
|
---|
3629 |
|
---|
3630 |
|
---|
3631 | int VspBspViewCellsManager::ConstructSubdivision(const ObjectContainer &objects,
|
---|
3632 | const VssRayContainer &rays)
|
---|
3633 | {
|
---|
3634 | mMaxPvsSize = (int)(mMaxPvsRatio * (float)objects.size());
|
---|
3635 |
|
---|
3636 | // if view cells were already constructed
|
---|
3637 | if (ViewCellsConstructed())
|
---|
3638 | return 0;
|
---|
3639 |
|
---|
3640 | int sampleContributions = 0;
|
---|
3641 |
|
---|
3642 | VssRayContainer sampleRays;
|
---|
3643 |
|
---|
3644 | int limit = min (mInitialSamples, (int)rays.size());
|
---|
3645 |
|
---|
3646 | VssRayContainer constructionRays;
|
---|
3647 | VssRayContainer savedRays;
|
---|
3648 |
|
---|
3649 | Debug << "samples used for vsp bsp subdivision: " << mInitialSamples
|
---|
3650 | << ", actual rays: " << (int)rays.size() << endl;
|
---|
3651 |
|
---|
3652 | GetRaySets(rays, mInitialSamples, constructionRays, &savedRays);
|
---|
3653 |
|
---|
3654 | Debug << "initial rays: " << (int)constructionRays.size() << endl;
|
---|
3655 | Debug << "saved rays: " << (int)savedRays.size() << endl;
|
---|
3656 |
|
---|
3657 |
|
---|
3658 | //TODO: remove
|
---|
3659 | if (1)
|
---|
3660 | mVspBspTree->Construct(constructionRays, &mViewSpaceBox);
|
---|
3661 | else
|
---|
3662 | mVspBspTree->Construct(rays, &mViewSpaceBox);
|
---|
3663 |
|
---|
3664 | // collapse invalid regions
|
---|
3665 | cout << "collapsing invalid tree regions ... ";
|
---|
3666 | long startTime = GetTime();
|
---|
3667 | int collapsedLeaves = mVspBspTree->CollapseTree();
|
---|
3668 | Debug << "collapsed in " << TimeDiff(startTime, GetTime()) * 1e-3
|
---|
3669 | << " seconds" << endl;
|
---|
3670 |
|
---|
3671 | cout << "finished" << endl;
|
---|
3672 |
|
---|
3673 | // -- stats
|
---|
3674 | Debug << mVspBspTree->GetStatistics() << endl;
|
---|
3675 |
|
---|
3676 | ResetViewCells();
|
---|
3677 | Debug << "\nView cells after construction:\n" << mCurrentViewCellsStats << endl;
|
---|
3678 |
|
---|
3679 |
|
---|
3680 | startTime = GetTime();
|
---|
3681 |
|
---|
3682 | cout << "Computing remaining ray contributions ... ";
|
---|
3683 |
|
---|
3684 | // recast rest of rays
|
---|
3685 | if (SAMPLE_AFTER_SUBDIVISION)
|
---|
3686 | ComputeSampleContributions(savedRays, true, false);
|
---|
3687 |
|
---|
3688 | cout << "finished" << endl;
|
---|
3689 |
|
---|
3690 | Debug << "Computed remaining ray contribution in " << TimeDiff(startTime, GetTime()) * 1e-3
|
---|
3691 | << " secs" << endl;
|
---|
3692 |
|
---|
3693 | cout << "construction finished" << endl;
|
---|
3694 |
|
---|
3695 | // real meshes are contructed at this stage
|
---|
3696 | if (0)
|
---|
3697 | {
|
---|
3698 | cout << "finalizing view cells ... ";
|
---|
3699 | FinalizeViewCells(true);
|
---|
3700 | cout << "finished" << endl;
|
---|
3701 | }
|
---|
3702 |
|
---|
3703 | return sampleContributions;
|
---|
3704 | }
|
---|
3705 |
|
---|
3706 |
|
---|
3707 | void VspBspViewCellsManager::MergeViewCells(const VssRayContainer &rays,
|
---|
3708 | const ObjectContainer &objects)
|
---|
3709 | {
|
---|
3710 | int vcSize = 0;
|
---|
3711 | int pvsSize = 0;
|
---|
3712 |
|
---|
3713 | //-- merge view cells
|
---|
3714 | cout << "starting merge using " << mPostProcessSamples << " samples ... " << endl;
|
---|
3715 | long startTime = GetTime();
|
---|
3716 |
|
---|
3717 |
|
---|
3718 | if (mMergeViewCells)
|
---|
3719 | {
|
---|
3720 | // TODO: should be done BEFORE the ray casting
|
---|
3721 | // compute tree by merging the nodes based on cost heuristics
|
---|
3722 | mViewCellsTree->ConstructMergeTree(rays, objects);
|
---|
3723 | }
|
---|
3724 | else
|
---|
3725 | {
|
---|
3726 | // compute tree by merging the nodes of the spatial hierarchy
|
---|
3727 | ViewCell *root = ConstructSpatialMergeTree(mVspBspTree->GetRoot());
|
---|
3728 | mViewCellsTree->SetRoot(root);
|
---|
3729 |
|
---|
3730 | // compute pvs
|
---|
3731 | ObjectPvs pvs;
|
---|
3732 | UpdatePvsForEvaluation(root, pvs);
|
---|
3733 | }
|
---|
3734 |
|
---|
3735 | if (1)
|
---|
3736 | {
|
---|
3737 | char mstats[100];
|
---|
3738 | ObjectPvs pvs;
|
---|
3739 |
|
---|
3740 | mEnvironment->GetStringValue("ViewCells.mergeStats", mstats);
|
---|
3741 | mViewCellsTree->ExportStats(mstats);
|
---|
3742 | }
|
---|
3743 |
|
---|
3744 | //-- stats and visualizations
|
---|
3745 | cout << "finished merging" << endl;
|
---|
3746 | cout << "merged view cells in "
|
---|
3747 | << TimeDiff(startTime, GetTime()) *1e-3 << " secs" << endl;
|
---|
3748 |
|
---|
3749 | Debug << "Postprocessing: Merged view cells in "
|
---|
3750 | << TimeDiff(startTime, GetTime()) *1e-3 << " secs" << endl << endl;
|
---|
3751 |
|
---|
3752 |
|
---|
3753 | int savedColorCode = mColorCode;
|
---|
3754 |
|
---|
3755 | // get currently active view cell set
|
---|
3756 | ResetViewCells();
|
---|
3757 | Debug << "\nView cells after merge:\n" << mCurrentViewCellsStats << endl;
|
---|
3758 |
|
---|
3759 | //BspLeaf::NewMail();
|
---|
3760 | if (1) // export merged view cells
|
---|
3761 | {
|
---|
3762 | mColorCode = 0;
|
---|
3763 | Exporter *exporter = Exporter::GetExporter("merged_view_cells.wrl");
|
---|
3764 |
|
---|
3765 | cout << "exporting view cells after merge ... ";
|
---|
3766 |
|
---|
3767 | if (exporter)
|
---|
3768 | {
|
---|
3769 | if (0)
|
---|
3770 | exporter->SetWireframe();
|
---|
3771 | else
|
---|
3772 | exporter->SetFilled();
|
---|
3773 |
|
---|
3774 | ExportViewCellsForViz(exporter);
|
---|
3775 |
|
---|
3776 | if (mExportGeometry)
|
---|
3777 | {
|
---|
3778 | Material m;
|
---|
3779 | m.mDiffuseColor = RgbColor(0, 1, 0);
|
---|
3780 | exporter->SetForcedMaterial(m);
|
---|
3781 | exporter->SetFilled();
|
---|
3782 |
|
---|
3783 | exporter->ExportGeometry(objects);
|
---|
3784 | }
|
---|
3785 |
|
---|
3786 | delete exporter;
|
---|
3787 | }
|
---|
3788 | cout << "finished" << endl;
|
---|
3789 | }
|
---|
3790 |
|
---|
3791 | if (1) // export merged view cells using pvs coding
|
---|
3792 | {
|
---|
3793 | mColorCode = 1;
|
---|
3794 |
|
---|
3795 | Exporter *exporter = Exporter::GetExporter("merged_view_cells_pvs.wrl");
|
---|
3796 |
|
---|
3797 | cout << "exporting view cells after merge (pvs size) ... ";
|
---|
3798 |
|
---|
3799 | if (exporter)
|
---|
3800 | {
|
---|
3801 | if (0)
|
---|
3802 | exporter->SetWireframe();
|
---|
3803 | else
|
---|
3804 | exporter->SetFilled();
|
---|
3805 |
|
---|
3806 | ExportViewCellsForViz(exporter);
|
---|
3807 |
|
---|
3808 | if (mExportGeometry)
|
---|
3809 | {
|
---|
3810 | Material m;
|
---|
3811 | m.mDiffuseColor = RgbColor(0, 1, 0);
|
---|
3812 | exporter->SetForcedMaterial(m);
|
---|
3813 | exporter->SetFilled();
|
---|
3814 |
|
---|
3815 | exporter->ExportGeometry(objects);
|
---|
3816 | }
|
---|
3817 |
|
---|
3818 | delete exporter;
|
---|
3819 | }
|
---|
3820 | cout << "finished" << endl;
|
---|
3821 | }
|
---|
3822 |
|
---|
3823 | mColorCode = savedColorCode;
|
---|
3824 |
|
---|
3825 | }
|
---|
3826 |
|
---|
3827 |
|
---|
3828 | bool VspBspViewCellsManager::EqualToSpatialNode(ViewCell *viewCell) const
|
---|
3829 | {
|
---|
3830 | return GetSpatialNode(viewCell) != NULL;
|
---|
3831 | }
|
---|
3832 |
|
---|
3833 |
|
---|
3834 | BspNode *VspBspViewCellsManager::GetSpatialNode(ViewCell *viewCell) const
|
---|
3835 | {
|
---|
3836 | if (!viewCell->IsLeaf())
|
---|
3837 | {
|
---|
3838 | BspViewCell *bspVc = dynamic_cast<BspViewCell *>(viewCell);
|
---|
3839 |
|
---|
3840 | return bspVc->mLeaf;
|
---|
3841 | }
|
---|
3842 | else
|
---|
3843 | {
|
---|
3844 | ViewCellInterior *interior = dynamic_cast<ViewCellInterior *>(viewCell);
|
---|
3845 |
|
---|
3846 | // cannot be node of binary tree
|
---|
3847 | if (interior->mChildren.size() != 2)
|
---|
3848 | return NULL;
|
---|
3849 |
|
---|
3850 | ViewCell *left = interior->mChildren[0];
|
---|
3851 | ViewCell *right = interior->mChildren[1];
|
---|
3852 |
|
---|
3853 | BspNode *leftNode = GetSpatialNode(left);
|
---|
3854 | BspNode *rightNode = GetSpatialNode(right);
|
---|
3855 |
|
---|
3856 | if (leftNode && rightNode && leftNode->IsSibling(rightNode))
|
---|
3857 | {
|
---|
3858 | return leftNode->GetParent();
|
---|
3859 | }
|
---|
3860 | }
|
---|
3861 |
|
---|
3862 | return NULL;
|
---|
3863 | }
|
---|
3864 |
|
---|
3865 |
|
---|
3866 | void VspBspViewCellsManager::RefineViewCells(const VssRayContainer &rays,
|
---|
3867 | const ObjectContainer &objects)
|
---|
3868 | {
|
---|
3869 | Debug << "render time before refine:" << endl;
|
---|
3870 | mRenderer->RenderScene();
|
---|
3871 | SimulationStatistics ss;
|
---|
3872 | dynamic_cast<RenderSimulator *>(mRenderer)->GetStatistics(ss);
|
---|
3873 | Debug << ss << endl;
|
---|
3874 |
|
---|
3875 | cout << "Refining the merged view cells ... ";
|
---|
3876 | long startTime = GetTime();
|
---|
3877 |
|
---|
3878 | // refining the merged view cells
|
---|
3879 | const int refined = mViewCellsTree->RefineViewCells(rays, objects);
|
---|
3880 |
|
---|
3881 | //-- stats and visualizations
|
---|
3882 | cout << "finished" << endl;
|
---|
3883 | cout << "refined " << refined << " view cells in "
|
---|
3884 | << TimeDiff(startTime, GetTime()) *1e-3 << " secs" << endl;
|
---|
3885 |
|
---|
3886 | Debug << "Postprocessing: refined " << refined << " view cells in "
|
---|
3887 | << TimeDiff(startTime, GetTime()) *1e-3 << " secs" << endl << endl;
|
---|
3888 | }
|
---|
3889 |
|
---|
3890 |
|
---|
3891 | int VspBspViewCellsManager::PostProcess(const ObjectContainer &objects,
|
---|
3892 | const VssRayContainer &rays)
|
---|
3893 | {
|
---|
3894 | if (!ViewCellsConstructed())
|
---|
3895 | {
|
---|
3896 | Debug << "postprocess error: no view cells constructed" << endl;
|
---|
3897 | return 0;
|
---|
3898 | }
|
---|
3899 |
|
---|
3900 |
|
---|
3901 | // view cells already finished before post processing step
|
---|
3902 | // (i.e. because they were loaded)
|
---|
3903 | if (mViewCellsFinished)
|
---|
3904 | {
|
---|
3905 | FinalizeViewCells(true);
|
---|
3906 | EvaluateViewCellsStats();
|
---|
3907 |
|
---|
3908 | return 0;
|
---|
3909 | }
|
---|
3910 |
|
---|
3911 | // check if new view cells turned invalid
|
---|
3912 | int minPvs, maxPvs;
|
---|
3913 |
|
---|
3914 | if (0)
|
---|
3915 | {
|
---|
3916 | minPvs = mMinPvsSize;
|
---|
3917 | maxPvs = mMaxPvsSize;
|
---|
3918 | }
|
---|
3919 | else
|
---|
3920 | {
|
---|
3921 | minPvs = mPruneEmptyViewCells ? 1 : 0;
|
---|
3922 | maxPvs = mMaxPvsSize;
|
---|
3923 | }
|
---|
3924 |
|
---|
3925 | Debug << "setting validity, min: " << minPvs << " max: " << maxPvs << endl;
|
---|
3926 | cout << "setting validity, min: " << minPvs << " max: " << maxPvs << endl;
|
---|
3927 |
|
---|
3928 | SetValidity(minPvs, maxPvs);
|
---|
3929 |
|
---|
3930 | // update valid view space according to valid view cells
|
---|
3931 | if (0) mVspBspTree->ValidateTree();
|
---|
3932 |
|
---|
3933 | // area has to be recomputed
|
---|
3934 | mTotalAreaValid = false;
|
---|
3935 | VssRayContainer postProcessRays;
|
---|
3936 | GetRaySets(rays, mPostProcessSamples, postProcessRays);
|
---|
3937 |
|
---|
3938 | Debug << "post processing using " << (int)postProcessRays.size() << " samples" << endl;
|
---|
3939 |
|
---|
3940 |
|
---|
3941 | // should maybe be done here to allow merge working with area or volume
|
---|
3942 | // and to correct the rendering statistics
|
---|
3943 | if (0) FinalizeViewCells(false);
|
---|
3944 |
|
---|
3945 | //-- merge the individual view cells
|
---|
3946 | MergeViewCells(postProcessRays, objects);
|
---|
3947 |
|
---|
3948 |
|
---|
3949 | // only for debugging purpose: test if the subdivision is valid
|
---|
3950 | TestSubdivision();
|
---|
3951 |
|
---|
3952 | //-- refines the merged view cells
|
---|
3953 | if (0) RefineViewCells(postProcessRays, objects);
|
---|
3954 |
|
---|
3955 |
|
---|
3956 | //-- render simulation after merge + refine
|
---|
3957 | cout << "\nevaluating bsp view cells render time before compress ... ";
|
---|
3958 | dynamic_cast<RenderSimulator *>(mRenderer)->RenderScene();
|
---|
3959 | SimulationStatistics ss;
|
---|
3960 | dynamic_cast<RenderSimulator *>(mRenderer)->GetStatistics(ss);
|
---|
3961 |
|
---|
3962 |
|
---|
3963 | cout << " finished" << endl;
|
---|
3964 | cout << ss << endl;
|
---|
3965 | Debug << ss << endl;
|
---|
3966 |
|
---|
3967 |
|
---|
3968 | //-- compression
|
---|
3969 | if (ViewCellsTreeConstructed() && mCompressViewCells)
|
---|
3970 | {
|
---|
3971 | int pvsEntries = mViewCellsTree->GetNumPvsEntries(mViewCellsTree->GetRoot());
|
---|
3972 | Debug << "number of entries before compress: " << pvsEntries << endl;
|
---|
3973 |
|
---|
3974 | mViewCellsTree->SetViewCellsStorage(ViewCellsTree::COMPRESSED);
|
---|
3975 |
|
---|
3976 | pvsEntries = mViewCellsTree->GetNumPvsEntries(mViewCellsTree->GetRoot());
|
---|
3977 | Debug << "number of entries after compress: " << pvsEntries << endl;
|
---|
3978 | }
|
---|
3979 |
|
---|
3980 |
|
---|
3981 | // collapse sibling leaves that share the same view cell
|
---|
3982 | if (0) mVspBspTree->CollapseTree();
|
---|
3983 |
|
---|
3984 | // recompute view cell list and statistics
|
---|
3985 | ResetViewCells();
|
---|
3986 |
|
---|
3987 | // compute final meshes and volume / area
|
---|
3988 | if (1) FinalizeViewCells(true);
|
---|
3989 |
|
---|
3990 | // write view cells to disc
|
---|
3991 | if (mExportViewCells)
|
---|
3992 | {
|
---|
3993 | char filename[100];
|
---|
3994 | mEnvironment->GetStringValue("ViewCells.filename", filename);
|
---|
3995 | ExportViewCells(filename, mExportPvs, objects);
|
---|
3996 | }
|
---|
3997 |
|
---|
3998 |
|
---|
3999 | // export bounding boxes
|
---|
4000 | if (mExportBboxesForPvs)
|
---|
4001 | {
|
---|
4002 | char filename[100];
|
---|
4003 | mEnvironment->GetStringValue("ViewCells.boxesFilename", filename);
|
---|
4004 |
|
---|
4005 | ExportBoundingBoxes(filename, objects);
|
---|
4006 | /*
|
---|
4007 | IndexedBoundingBoxContainer boxes;
|
---|
4008 | LoadBoundingBoxes(filename, boxes);
|
---|
4009 |
|
---|
4010 | IndexedBoundingBoxContainer::const_iterator it, it_end = boxes.end();
|
---|
4011 |
|
---|
4012 | for (it = boxes.begin(); it != it_end; ++ it)
|
---|
4013 | {
|
---|
4014 | IndexedBoundingBox ibox = *it;
|
---|
4015 | AxisAlignedBox3 box = ibox.second;
|
---|
4016 |
|
---|
4017 | Debug << ibox.first << " "
|
---|
4018 | << box.Min().x << " "
|
---|
4019 | << box.Min().y << " "
|
---|
4020 | << box.Min().z << " "
|
---|
4021 | << box.Max().x << " "
|
---|
4022 | << box.Max().y << " "
|
---|
4023 | << box.Max().z << endl;
|
---|
4024 | }*/
|
---|
4025 | }
|
---|
4026 |
|
---|
4027 | return 0;
|
---|
4028 | }
|
---|
4029 |
|
---|
4030 |
|
---|
4031 | int VspBspViewCellsManager::GetType() const
|
---|
4032 | {
|
---|
4033 | return VSP_BSP;
|
---|
4034 | }
|
---|
4035 |
|
---|
4036 |
|
---|
4037 | ViewCell *VspBspViewCellsManager::ConstructSpatialMergeTree(BspNode *root)
|
---|
4038 | {
|
---|
4039 | // terminate recursion
|
---|
4040 | if (root->IsLeaf())
|
---|
4041 | {
|
---|
4042 | BspLeaf *leaf = dynamic_cast<BspLeaf *>(root);
|
---|
4043 | leaf->GetViewCell()->SetMergeCost(0.0f);
|
---|
4044 | return leaf->GetViewCell();
|
---|
4045 | }
|
---|
4046 |
|
---|
4047 |
|
---|
4048 | BspInterior *interior = dynamic_cast<BspInterior *>(root);
|
---|
4049 | ViewCellInterior *viewCellInterior = new ViewCellInterior();
|
---|
4050 |
|
---|
4051 | // evaluate merge cost for priority traversal
|
---|
4052 | float mergeCost = 1.0f / (float)root->mTimeStamp;
|
---|
4053 | viewCellInterior->SetMergeCost(mergeCost);
|
---|
4054 |
|
---|
4055 | float volume = 0;
|
---|
4056 |
|
---|
4057 | BspNode *front = interior->GetFront();
|
---|
4058 | BspNode *back = interior->GetBack();
|
---|
4059 |
|
---|
4060 |
|
---|
4061 | ObjectPvs frontPvs, backPvs;
|
---|
4062 |
|
---|
4063 | //-- recursivly compute child hierarchies
|
---|
4064 | ViewCell *backVc = ConstructSpatialMergeTree(back);
|
---|
4065 | ViewCell *frontVc = ConstructSpatialMergeTree(front);
|
---|
4066 |
|
---|
4067 |
|
---|
4068 | viewCellInterior->SetupChildLink(backVc);
|
---|
4069 | viewCellInterior->SetupChildLink(frontVc);
|
---|
4070 |
|
---|
4071 | volume += backVc->GetVolume();
|
---|
4072 | volume += frontVc->GetVolume();
|
---|
4073 |
|
---|
4074 | viewCellInterior->SetVolume(volume);
|
---|
4075 |
|
---|
4076 | return viewCellInterior;
|
---|
4077 | }
|
---|
4078 |
|
---|
4079 |
|
---|
4080 |
|
---|
4081 | void VspBspViewCellsManager::UpdatePvsForEvaluation(ViewCell *root, ObjectPvs &pvs)
|
---|
4082 | {
|
---|
4083 | // terminate traversal
|
---|
4084 | if (root->IsLeaf())
|
---|
4085 | {
|
---|
4086 | pvs = root->GetPvs();
|
---|
4087 |
|
---|
4088 | root->mPvsSize = root->GetPvs().GetSize();
|
---|
4089 | root->mPvsSizeValid = true;
|
---|
4090 |
|
---|
4091 | return;
|
---|
4092 | }
|
---|
4093 |
|
---|
4094 | //-- interior node => propagate pvs up
|
---|
4095 | ViewCellInterior *interior = dynamic_cast<ViewCellInterior *>(root);
|
---|
4096 | interior->GetPvs().Clear();
|
---|
4097 | pvs.Clear();
|
---|
4098 | vector<ObjectPvs> pvsList;
|
---|
4099 |
|
---|
4100 | ViewCellContainer::const_iterator vit, vit_end = interior->mChildren.end();
|
---|
4101 |
|
---|
4102 | for (vit = interior->mChildren.begin(); vit != vit_end; ++ vit)
|
---|
4103 | {
|
---|
4104 | ObjectPvs objPvs;
|
---|
4105 |
|
---|
4106 | //-- recursivly compute child pvss
|
---|
4107 | UpdatePvsForEvaluation(*vit, objPvs);
|
---|
4108 |
|
---|
4109 | // store pvs in vector
|
---|
4110 | pvsList.push_back(objPvs);
|
---|
4111 | }
|
---|
4112 |
|
---|
4113 | #if 1
|
---|
4114 |
|
---|
4115 | Intersectable::NewMail();
|
---|
4116 |
|
---|
4117 | //-- faster way of computing pvs:
|
---|
4118 | // construct merged pvs by adding
|
---|
4119 | // and only those of the next pvs which were not mailed.
|
---|
4120 | // note: sumpdf is not correct!!
|
---|
4121 | vector<ObjectPvs>::iterator oit = pvsList.begin();
|
---|
4122 |
|
---|
4123 | for (vit = interior->mChildren.begin(); vit != vit_end; ++ vit, ++ oit)
|
---|
4124 | {
|
---|
4125 | ObjectPvsMap::iterator pit, pit_end = (*oit).mEntries.end();
|
---|
4126 |
|
---|
4127 | for (pit = (*oit).mEntries.begin(); pit != pit_end; ++ pit)
|
---|
4128 | {
|
---|
4129 | Intersectable *intersect = (*pit).first;
|
---|
4130 |
|
---|
4131 | if (!intersect->Mailed())
|
---|
4132 | {
|
---|
4133 | pvs.AddSample(intersect, (*pit).second.mSumPdf);
|
---|
4134 | intersect->Mail();
|
---|
4135 | }
|
---|
4136 | }
|
---|
4137 | }
|
---|
4138 |
|
---|
4139 | // store pvs in this node
|
---|
4140 | if (mViewCellsTree->ViewCellsStorage() == ViewCellsTree::PVS_IN_INTERIORS)
|
---|
4141 | {
|
---|
4142 | interior->mPvs = pvs;
|
---|
4143 | }
|
---|
4144 |
|
---|
4145 | // set new pvs size
|
---|
4146 | interior->mPvsSize = pvs.GetSize();
|
---|
4147 | interior->mPvsSizeValid = true;
|
---|
4148 |
|
---|
4149 | #else
|
---|
4150 |
|
---|
4151 | // really merge cells: slow put sumpdf is correct
|
---|
4152 | viewCellInterior->GetPvs().Merge(backVc->GetPvs());
|
---|
4153 | viewCellInterior->GetPvs().Merge(frontVc->GetPvs());
|
---|
4154 | #endif
|
---|
4155 |
|
---|
4156 | }
|
---|
4157 |
|
---|
4158 |
|
---|
4159 | bool VspBspViewCellsManager::GetViewPoint(Vector3 &viewPoint) const
|
---|
4160 | {
|
---|
4161 | if (!ViewCellsConstructed())
|
---|
4162 | return ViewCellsManager::GetViewPoint(viewPoint);
|
---|
4163 |
|
---|
4164 | // TODO: set reasonable limit
|
---|
4165 | const int limit = 20;
|
---|
4166 |
|
---|
4167 | for (int i = 0; i < limit; ++ i)
|
---|
4168 | {
|
---|
4169 | viewPoint = mViewSpaceBox.GetRandomPoint();
|
---|
4170 | if (mVspBspTree->ViewPointValid(viewPoint))
|
---|
4171 | {
|
---|
4172 | return true;
|
---|
4173 | }
|
---|
4174 | }
|
---|
4175 | Debug << "failed to find valid view point, taking " << viewPoint << endl;
|
---|
4176 | return false;
|
---|
4177 | }
|
---|
4178 |
|
---|
4179 |
|
---|
4180 | bool VspBspViewCellsManager::ViewPointValid(const Vector3 &viewPoint) const
|
---|
4181 | {
|
---|
4182 | // $$JB -> implemented in viewcellsmanager (slower, but allows dynamic
|
---|
4183 | // validy update in preprocessor for all managers)
|
---|
4184 | return ViewCellsManager::ViewPointValid(viewPoint);
|
---|
4185 |
|
---|
4186 | // return mViewSpaceBox.IsInside(viewPoint) &&
|
---|
4187 | // mVspBspTree->ViewPointValid(viewPoint);
|
---|
4188 | }
|
---|
4189 |
|
---|
4190 |
|
---|
4191 | void VspBspViewCellsManager::Visualize(const ObjectContainer &objects,
|
---|
4192 | const VssRayContainer &sampleRays)
|
---|
4193 | {
|
---|
4194 | if (!ViewCellsConstructed())
|
---|
4195 | return;
|
---|
4196 |
|
---|
4197 | VssRayContainer visRays;
|
---|
4198 | GetRaySets(sampleRays, mVisualizationSamples, visRays);
|
---|
4199 |
|
---|
4200 |
|
---|
4201 | if (1) // export view cells
|
---|
4202 | { // hack pvs
|
---|
4203 | int savedColorCode = mColorCode;
|
---|
4204 | mColorCode = 1;
|
---|
4205 |
|
---|
4206 | Exporter *exporter = Exporter::GetExporter("final_view_cells.x3d");
|
---|
4207 |
|
---|
4208 | if (exporter)
|
---|
4209 | {
|
---|
4210 | cout << "exporting view cells after post process ... ";
|
---|
4211 |
|
---|
4212 | if (0)
|
---|
4213 | {
|
---|
4214 | exporter->SetWireframe();
|
---|
4215 | exporter->ExportBox(mViewSpaceBox);
|
---|
4216 | exporter->SetFilled();
|
---|
4217 | }
|
---|
4218 |
|
---|
4219 | if (mExportGeometry)
|
---|
4220 | {
|
---|
4221 | exporter->ExportGeometry(objects);
|
---|
4222 | }
|
---|
4223 |
|
---|
4224 | // export rays
|
---|
4225 | if (mExportRays)
|
---|
4226 | {
|
---|
4227 | exporter->ExportRays(visRays, RgbColor(0, 1, 0));
|
---|
4228 | }
|
---|
4229 |
|
---|
4230 | //exporter->SetFilled();
|
---|
4231 | bool b = mUseClipPlaneForViz;
|
---|
4232 | mUseClipPlaneForViz = false;
|
---|
4233 | ExportViewCellsForViz(exporter);
|
---|
4234 | mUseClipPlaneForViz = b;
|
---|
4235 |
|
---|
4236 | delete exporter;
|
---|
4237 | cout << "finished" << endl;
|
---|
4238 | }
|
---|
4239 |
|
---|
4240 | mColorCode = savedColorCode;
|
---|
4241 | }
|
---|
4242 |
|
---|
4243 | if (0)
|
---|
4244 | {
|
---|
4245 | cout << "exporting depth map ... ";
|
---|
4246 |
|
---|
4247 | Exporter *exporter = Exporter::GetExporter("depth_map.x3d");
|
---|
4248 | if (exporter)
|
---|
4249 | {
|
---|
4250 | if (1)
|
---|
4251 | {
|
---|
4252 | exporter->SetWireframe();
|
---|
4253 | exporter->ExportBox(mViewSpaceBox);
|
---|
4254 | exporter->SetFilled();
|
---|
4255 | }
|
---|
4256 |
|
---|
4257 | if (mExportGeometry)
|
---|
4258 | {
|
---|
4259 | exporter->ExportGeometry(objects);
|
---|
4260 | }
|
---|
4261 |
|
---|
4262 | const int maxDepth = mVspBspTree->mBspStats.maxDepth;
|
---|
4263 |
|
---|
4264 | ViewCellContainer::const_iterator vit, vit_end = mViewCells.end();
|
---|
4265 |
|
---|
4266 | for (vit = mViewCells.begin(); vit != mViewCells.end(); ++ vit)
|
---|
4267 | {
|
---|
4268 | ViewCell *vc = *vit;
|
---|
4269 |
|
---|
4270 | ViewCellContainer leaves;
|
---|
4271 | mViewCellsTree->CollectLeaves(vc, leaves);
|
---|
4272 |
|
---|
4273 | ViewCellContainer::const_iterator lit, lit_end = leaves.end();
|
---|
4274 |
|
---|
4275 | for (lit = leaves.begin(); lit != lit_end; ++ lit)
|
---|
4276 | {
|
---|
4277 | BspLeaf *leaf = dynamic_cast<BspViewCell *>(*lit)->mLeaf;
|
---|
4278 |
|
---|
4279 | Material m;
|
---|
4280 |
|
---|
4281 | float relDepth = (float)leaf->GetDepth() / (float)maxDepth;
|
---|
4282 | m.mDiffuseColor.r = relDepth;
|
---|
4283 | m.mDiffuseColor.g = 0.0f;
|
---|
4284 | m.mDiffuseColor.b = 1.0f - relDepth;
|
---|
4285 |
|
---|
4286 | exporter->SetForcedMaterial(m);
|
---|
4287 |
|
---|
4288 |
|
---|
4289 | BspNodeGeometry geom;
|
---|
4290 | mVspBspTree->ConstructGeometry(leaf, geom);
|
---|
4291 | exporter->ExportPolygons(geom.GetPolys());
|
---|
4292 | }
|
---|
4293 | }
|
---|
4294 |
|
---|
4295 | delete exporter;
|
---|
4296 | }
|
---|
4297 |
|
---|
4298 |
|
---|
4299 | cout << "finished" << endl;
|
---|
4300 | }
|
---|
4301 |
|
---|
4302 | //-- visualization of the BSP splits
|
---|
4303 | bool exportSplits = false;
|
---|
4304 | mEnvironment->GetBoolValue("VspBspTree.Visualization.exportSplits", exportSplits);
|
---|
4305 |
|
---|
4306 | if (exportSplits)
|
---|
4307 | {
|
---|
4308 | cout << "exporting splits ... ";
|
---|
4309 | ExportSplits(objects, visRays);
|
---|
4310 | cout << "finished" << endl;
|
---|
4311 | }
|
---|
4312 |
|
---|
4313 | //-- export single view cells
|
---|
4314 | ExportBspPvs(objects, visRays);
|
---|
4315 | }
|
---|
4316 |
|
---|
4317 |
|
---|
4318 | void VspBspViewCellsManager::ExportSplits(const ObjectContainer &objects,
|
---|
4319 | const VssRayContainer &rays)
|
---|
4320 | {
|
---|
4321 | Exporter *exporter = Exporter::GetExporter("bsp_splits.x3d");
|
---|
4322 |
|
---|
4323 | if (exporter)
|
---|
4324 | {
|
---|
4325 | Material m;
|
---|
4326 | m.mDiffuseColor = RgbColor(1, 0, 0);
|
---|
4327 | exporter->SetForcedMaterial(m);
|
---|
4328 | exporter->SetWireframe();
|
---|
4329 |
|
---|
4330 | exporter->ExportBspSplits(*mVspBspTree, true);
|
---|
4331 |
|
---|
4332 | // take forced material, else big scenes cannot be viewed
|
---|
4333 | m.mDiffuseColor = RgbColor(0, 1, 0);
|
---|
4334 | exporter->SetForcedMaterial(m);
|
---|
4335 | exporter->SetFilled();
|
---|
4336 |
|
---|
4337 | exporter->ResetForcedMaterial();
|
---|
4338 |
|
---|
4339 | // export rays
|
---|
4340 | if (mExportRays)
|
---|
4341 | exporter->ExportRays(rays, RgbColor(1, 1, 0));
|
---|
4342 |
|
---|
4343 | if (mExportGeometry)
|
---|
4344 | exporter->ExportGeometry(objects);
|
---|
4345 |
|
---|
4346 | delete exporter;
|
---|
4347 | }
|
---|
4348 | }
|
---|
4349 |
|
---|
4350 |
|
---|
4351 | void VspBspViewCellsManager::ExportBspPvs(const ObjectContainer &objects,
|
---|
4352 | const VssRayContainer &rays)
|
---|
4353 | {
|
---|
4354 | const int leafOut = 20;
|
---|
4355 |
|
---|
4356 | ViewCell::NewMail();
|
---|
4357 |
|
---|
4358 | cout << "visualization using " << (int)rays.size() << " samples" << endl;
|
---|
4359 | Debug << "visualization using " << (int)rays.size() << " samples" << endl;
|
---|
4360 | Debug << "\nOutput view cells: " << endl;
|
---|
4361 |
|
---|
4362 | const bool sortViewCells = true;
|
---|
4363 |
|
---|
4364 |
|
---|
4365 | // sort view cells to visualize the largest view cells
|
---|
4366 | if (sortViewCells)
|
---|
4367 | {
|
---|
4368 | //stable_sort(mViewCells.begin(), mViewCells.end(), ViewCell::SmallerPvs);
|
---|
4369 | stable_sort(mViewCells.begin(), mViewCells.end(), ViewCell::LargerRenderCost);
|
---|
4370 | }
|
---|
4371 |
|
---|
4372 | int limit = min(leafOut, (int)mViewCells.size());
|
---|
4373 |
|
---|
4374 | int raysOut = 0;
|
---|
4375 |
|
---|
4376 | //-- some rays for output
|
---|
4377 | for (int i = 0; i < limit; ++ i)
|
---|
4378 | {
|
---|
4379 | cout << "creating output for view cell " << i << " ... ";
|
---|
4380 |
|
---|
4381 | ViewCell *vc;
|
---|
4382 |
|
---|
4383 | if (sortViewCells) // largest view cell pvs first
|
---|
4384 | vc = mViewCells[i];
|
---|
4385 | else
|
---|
4386 | vc = mViewCells[(int)RandomValue(0, (float)mViewCells.size() - 1)];
|
---|
4387 |
|
---|
4388 | ObjectPvs pvs;
|
---|
4389 | mViewCellsTree->GetPvs(vc, pvs);
|
---|
4390 |
|
---|
4391 | //bspLeaves[j]->Mail();
|
---|
4392 | char s[64]; sprintf(s, "bsp-pvs%04d.x3d", i);
|
---|
4393 | Exporter *exporter = Exporter::GetExporter(s);
|
---|
4394 |
|
---|
4395 | Debug << i << ": pvs size=" << (int)mViewCellsTree->GetPvsSize(vc) << endl;
|
---|
4396 |
|
---|
4397 | //-- export the sample rays
|
---|
4398 | if (1 || mExportRays)
|
---|
4399 | {
|
---|
4400 | // output rays stored with the view cells during subdivision
|
---|
4401 | if (0)
|
---|
4402 | {
|
---|
4403 | VssRayContainer vcRays;
|
---|
4404 | VssRayContainer collectRays;
|
---|
4405 |
|
---|
4406 | raysOut = min((int)rays.size(), 100);
|
---|
4407 |
|
---|
4408 | // collect intial view cells
|
---|
4409 | ViewCellContainer leaves;
|
---|
4410 | mViewCellsTree->CollectLeaves(vc, leaves);
|
---|
4411 |
|
---|
4412 | ViewCellContainer::const_iterator vit, vit_end = leaves.end();
|
---|
4413 |
|
---|
4414 | for (vit = leaves.begin(); vit != vit_end; ++ vit)
|
---|
4415 | {
|
---|
4416 | BspLeaf *vcLeaf = dynamic_cast<BspViewCell *>(*vit)->mLeaf;
|
---|
4417 |
|
---|
4418 | VssRayContainer::const_iterator rit, rit_end = vcLeaf->mVssRays.end();
|
---|
4419 |
|
---|
4420 | for (rit = vcLeaf->mVssRays.begin(); rit != rit_end; ++ rit)
|
---|
4421 | {
|
---|
4422 | collectRays.push_back(*rit);
|
---|
4423 | }
|
---|
4424 | }
|
---|
4425 |
|
---|
4426 | VssRayContainer::const_iterator rit, rit_end = collectRays.end();
|
---|
4427 |
|
---|
4428 | for (rit = collectRays.begin(); rit != rit_end; ++ rit)
|
---|
4429 | {
|
---|
4430 | float p = RandomValue(0.0f, (float)collectRays.size());
|
---|
4431 |
|
---|
4432 | if (p < raysOut)
|
---|
4433 | vcRays.push_back(*rit);
|
---|
4434 | }
|
---|
4435 |
|
---|
4436 | //-- export rays piercing this view cell
|
---|
4437 | exporter->ExportRays(vcRays, RgbColor(1, 1, 1));
|
---|
4438 | }
|
---|
4439 |
|
---|
4440 | // associate new rays with output view cell
|
---|
4441 | if (1)
|
---|
4442 | {
|
---|
4443 | VssRayContainer vcRays;
|
---|
4444 | raysOut = min((int)rays.size(), mVisualizationSamples);
|
---|
4445 |
|
---|
4446 | // check whether we can add the current ray to the output rays
|
---|
4447 | for (int k = 0; k < raysOut; ++ k)
|
---|
4448 | {
|
---|
4449 | VssRay *ray = rays[k];
|
---|
4450 | for (int j = 0; j < (int)ray->mViewCells.size(); ++ j)
|
---|
4451 | {
|
---|
4452 | ViewCell *rayvc = ray->mViewCells[j];
|
---|
4453 |
|
---|
4454 | if (rayvc == vc)
|
---|
4455 | vcRays.push_back(ray);
|
---|
4456 | }
|
---|
4457 | }
|
---|
4458 |
|
---|
4459 | //-- export rays piercing this view cell
|
---|
4460 | exporter->ExportRays(vcRays, RgbColor(1, 1, 0));
|
---|
4461 | }
|
---|
4462 |
|
---|
4463 | }
|
---|
4464 |
|
---|
4465 |
|
---|
4466 | exporter->SetWireframe();
|
---|
4467 |
|
---|
4468 | Material m;//= RandomMaterial();
|
---|
4469 | m.mDiffuseColor = RgbColor(0, 1, 0);
|
---|
4470 | exporter->SetForcedMaterial(m);
|
---|
4471 |
|
---|
4472 | ExportViewCellGeometry(exporter, vc);
|
---|
4473 |
|
---|
4474 | exporter->SetFilled();
|
---|
4475 |
|
---|
4476 | //-- export pvs
|
---|
4477 | if (1)
|
---|
4478 | {
|
---|
4479 | ObjectPvsMap::const_iterator oit,
|
---|
4480 | oit_end = pvs.mEntries.end();
|
---|
4481 |
|
---|
4482 | Intersectable::NewMail();
|
---|
4483 |
|
---|
4484 | // output PVS of view cell
|
---|
4485 | for (oit = pvs.mEntries.begin(); oit != oit_end; ++ oit)
|
---|
4486 | {
|
---|
4487 | Intersectable *intersect = (*oit).first;
|
---|
4488 |
|
---|
4489 | if (!intersect->Mailed())
|
---|
4490 | {
|
---|
4491 | m = RandomMaterial();
|
---|
4492 | exporter->SetForcedMaterial(m);
|
---|
4493 |
|
---|
4494 | exporter->ExportIntersectable(intersect);
|
---|
4495 | intersect->Mail();
|
---|
4496 | }
|
---|
4497 | }
|
---|
4498 | }
|
---|
4499 |
|
---|
4500 | if (0)
|
---|
4501 | { // export scene geometry
|
---|
4502 | m.mDiffuseColor = RgbColor(1, 0, 0);
|
---|
4503 | exporter->SetForcedMaterial(m);
|
---|
4504 |
|
---|
4505 | exporter->ExportGeometry(objects);
|
---|
4506 | }
|
---|
4507 |
|
---|
4508 | DEL_PTR(exporter);
|
---|
4509 | cout << "finished" << endl;
|
---|
4510 | }
|
---|
4511 |
|
---|
4512 | Debug << endl;
|
---|
4513 | }
|
---|
4514 |
|
---|
4515 |
|
---|
4516 | int VspBspViewCellsManager::ComputeBoxIntersections(const AxisAlignedBox3 &box, ViewCellContainer &viewCells) const
|
---|
4517 | {
|
---|
4518 | return mVspBspTree->ComputeBoxIntersections(box, viewCells);
|
---|
4519 | }
|
---|
4520 |
|
---|
4521 |
|
---|
4522 | int VspBspViewCellsManager::CastLineSegment(const Vector3 &origin,
|
---|
4523 | const Vector3 &termination,
|
---|
4524 | ViewCellContainer &viewcells)
|
---|
4525 | {
|
---|
4526 | return mVspBspTree->CastLineSegment(origin, termination, viewcells);
|
---|
4527 | }
|
---|
4528 |
|
---|
4529 |
|
---|
4530 | void VspBspViewCellsManager::ExportColor(Exporter *exporter,
|
---|
4531 | ViewCell *vc) const
|
---|
4532 | {
|
---|
4533 | const bool vcValid = CheckValidity(vc, mMinPvsSize, mMaxPvsSize);
|
---|
4534 |
|
---|
4535 | float importance = 0;
|
---|
4536 | static Material m;
|
---|
4537 |
|
---|
4538 | switch (mColorCode)
|
---|
4539 | {
|
---|
4540 | case 0: // Random
|
---|
4541 | {
|
---|
4542 | if (vcValid)
|
---|
4543 | {
|
---|
4544 | m.mDiffuseColor.r = 0.5f + RandomValue(0.0f, 0.5f);
|
---|
4545 | m.mDiffuseColor.g = 0.5f + RandomValue(0.0f, 0.5f);
|
---|
4546 | m.mDiffuseColor.b = 0.5f + RandomValue(0.f, 0.5f);
|
---|
4547 | }
|
---|
4548 | else
|
---|
4549 | {
|
---|
4550 | m.mDiffuseColor.r = 0.0f;
|
---|
4551 | m.mDiffuseColor.g = 1.0f;
|
---|
4552 | m.mDiffuseColor.b = 0.0f;
|
---|
4553 | }
|
---|
4554 |
|
---|
4555 | exporter->SetForcedMaterial(m);
|
---|
4556 | return;
|
---|
4557 | }
|
---|
4558 |
|
---|
4559 | case 1: // pvs
|
---|
4560 | {
|
---|
4561 | importance = (float)mViewCellsTree->GetPvsSize(vc) / (float)mCurrentViewCellsStats.maxPvs;
|
---|
4562 | }
|
---|
4563 | break;
|
---|
4564 | case 2: // merges
|
---|
4565 | {
|
---|
4566 | int lSize = mViewCellsTree->GetNumInitialViewCells(vc);
|
---|
4567 | importance = (float)lSize / (float)mCurrentViewCellsStats.maxLeaves;
|
---|
4568 | }
|
---|
4569 | break;
|
---|
4570 | case 3: // merge tree differene
|
---|
4571 | {
|
---|
4572 | importance = (float)GetMaxTreeDiff(vc) /
|
---|
4573 | (float)(mVspBspTree->GetStatistics().maxDepth * 2);
|
---|
4574 |
|
---|
4575 | }
|
---|
4576 | break;
|
---|
4577 | default:
|
---|
4578 | break;
|
---|
4579 | }
|
---|
4580 |
|
---|
4581 | // special color code for invalid view cells
|
---|
4582 | m.mDiffuseColor.r = importance;
|
---|
4583 | m.mDiffuseColor.g = 1.0f - m.mDiffuseColor.r;
|
---|
4584 | m.mDiffuseColor.b = vcValid ? 1.0f : 0.0f;
|
---|
4585 |
|
---|
4586 | //Debug << "importance: " << importance << endl;
|
---|
4587 | exporter->SetForcedMaterial(m);
|
---|
4588 | }
|
---|
4589 |
|
---|
4590 |
|
---|
4591 | void VspBspViewCellsManager::ExportViewCellGeometry(Exporter *exporter,
|
---|
4592 | ViewCell *vc,
|
---|
4593 | const Plane3 *clipPlane) const
|
---|
4594 | {
|
---|
4595 | if (clipPlane)
|
---|
4596 | {
|
---|
4597 | ViewCellContainer leaves;
|
---|
4598 | mViewCellsTree->CollectLeaves(vc, leaves);
|
---|
4599 | ViewCellContainer::const_iterator it, it_end = leaves.end();
|
---|
4600 |
|
---|
4601 | for (it = leaves.begin(); it != it_end; ++ it)
|
---|
4602 | {
|
---|
4603 | BspNodeGeometry geom;
|
---|
4604 |
|
---|
4605 | BspNodeGeometry front;
|
---|
4606 | BspNodeGeometry back;
|
---|
4607 |
|
---|
4608 | BspLeaf *leaf = dynamic_cast<BspViewCell *>(*it)->mLeaf;
|
---|
4609 | mVspBspTree->ConstructGeometry(leaf, geom);
|
---|
4610 |
|
---|
4611 | const float eps = 0.00000001f;
|
---|
4612 | const int cf = geom.Side(*clipPlane, eps);
|
---|
4613 |
|
---|
4614 | if (cf == -1)
|
---|
4615 | {
|
---|
4616 | exporter->ExportPolygons(geom.GetPolys());
|
---|
4617 | }
|
---|
4618 | else if (cf == 0)
|
---|
4619 | {
|
---|
4620 | geom.SplitGeometry(front,
|
---|
4621 | back,
|
---|
4622 | *clipPlane,
|
---|
4623 | mViewSpaceBox,
|
---|
4624 | eps);
|
---|
4625 |
|
---|
4626 | //Debug << "geo size: " << geom.Size() << endl;
|
---|
4627 | //Debug << "size b: " << back.Size() << " f: " << front.Size() << endl;
|
---|
4628 |
|
---|
4629 | if (back.Valid())
|
---|
4630 | {
|
---|
4631 | exporter->ExportPolygons(back.GetPolys());
|
---|
4632 | }
|
---|
4633 | }
|
---|
4634 | }
|
---|
4635 | }
|
---|
4636 | else
|
---|
4637 | {
|
---|
4638 | // export mesh if available
|
---|
4639 | /* if (vc->GetMesh())
|
---|
4640 | {
|
---|
4641 | exporter->ExportMesh(vc->GetMesh());
|
---|
4642 | }
|
---|
4643 | else
|
---|
4644 | {*/
|
---|
4645 | BspNodeGeometry geom;
|
---|
4646 | mVspBspTree->ConstructGeometry(vc, geom);
|
---|
4647 | exporter->ExportPolygons(geom.GetPolys());
|
---|
4648 | //}
|
---|
4649 | }
|
---|
4650 | }
|
---|
4651 |
|
---|
4652 |
|
---|
4653 | int VspBspViewCellsManager::GetMaxTreeDiff(ViewCell *vc) const
|
---|
4654 | {
|
---|
4655 | ViewCellContainer leaves;
|
---|
4656 | mViewCellsTree->CollectLeaves(vc, leaves);
|
---|
4657 |
|
---|
4658 | int maxDist = 0;
|
---|
4659 |
|
---|
4660 | // compute max height difference
|
---|
4661 | for (int i = 0; i < (int)leaves.size(); ++ i)
|
---|
4662 | for (int j = 0; j < (int)leaves.size(); ++ j)
|
---|
4663 | {
|
---|
4664 | BspLeaf *leaf = dynamic_cast<BspViewCell *>(leaves[i])->mLeaf;
|
---|
4665 |
|
---|
4666 | if (i != j)
|
---|
4667 | {
|
---|
4668 | BspLeaf *leaf2 =dynamic_cast<BspViewCell *>(leaves[j])->mLeaf;
|
---|
4669 | int dist = mVspBspTree->TreeDistance(leaf, leaf2);
|
---|
4670 | if (dist > maxDist)
|
---|
4671 | maxDist = dist;
|
---|
4672 | }
|
---|
4673 | }
|
---|
4674 |
|
---|
4675 | return maxDist;
|
---|
4676 | }
|
---|
4677 |
|
---|
4678 |
|
---|
4679 | ViewCell *VspBspViewCellsManager::GetViewCell(const Vector3 &point, const bool active) const
|
---|
4680 | {
|
---|
4681 | if (!mVspBspTree)
|
---|
4682 | return NULL;
|
---|
4683 |
|
---|
4684 | if (!mViewSpaceBox.IsInside(point))
|
---|
4685 | return NULL;
|
---|
4686 |
|
---|
4687 | return mVspBspTree->GetViewCell(point, active);
|
---|
4688 | }
|
---|
4689 |
|
---|
4690 |
|
---|
4691 | void VspBspViewCellsManager::CreateMesh(ViewCell *vc)
|
---|
4692 | {
|
---|
4693 | //if (vc->GetMesh()) delete vc->GetMesh();
|
---|
4694 | BspNodeGeometry geom;
|
---|
4695 |
|
---|
4696 | mVspBspTree->ConstructGeometry(vc, geom);
|
---|
4697 |
|
---|
4698 | Mesh *mesh = new Mesh();
|
---|
4699 | IncludeNodeGeomInMesh(geom, *mesh);
|
---|
4700 |
|
---|
4701 | vc->SetMesh(mesh);
|
---|
4702 | // put mesh into mesh container so we can savely delete it
|
---|
4703 | mMeshContainer.push_back(mesh);
|
---|
4704 | }
|
---|
4705 |
|
---|
4706 |
|
---|
4707 | ViewCellsManager *ViewCellsManager::LoadViewCells(const string &filename,
|
---|
4708 | ObjectContainer *objects,
|
---|
4709 | Environment *env,
|
---|
4710 | const bool finalizeViewCells,
|
---|
4711 | BoundingBoxConverter *bconverter)
|
---|
4712 |
|
---|
4713 | {
|
---|
4714 | ViewCellsParser parser;
|
---|
4715 |
|
---|
4716 | ViewCellsManager *vm = NULL;
|
---|
4717 |
|
---|
4718 | if (parser.ParseFile(filename, &vm, objects, bconverter, env))
|
---|
4719 | {
|
---|
4720 | long startTime = GetTime();
|
---|
4721 |
|
---|
4722 | //vm->PrepareLoadedViewCells();
|
---|
4723 | vm->ResetViewCells();
|
---|
4724 |
|
---|
4725 | vm->mViewCellsFinished = true;
|
---|
4726 | vm->mMaxPvsSize = (int)objects->size();
|
---|
4727 |
|
---|
4728 | // create the meshes and compute volumes
|
---|
4729 | if (finalizeViewCells)
|
---|
4730 | {
|
---|
4731 | vm->FinalizeViewCells(true);
|
---|
4732 | vm->mViewCellsTree->AssignRandomColors();
|
---|
4733 | }
|
---|
4734 |
|
---|
4735 | Debug << (int)vm->mViewCells.size() << " view cells loaded in "
|
---|
4736 | << TimeDiff(startTime, GetTime()) * 1e-3 << " secs" << endl;
|
---|
4737 | }
|
---|
4738 | else
|
---|
4739 | {
|
---|
4740 | Debug << "Error: loading view cells failed!" << endl;
|
---|
4741 | DEL_PTR(vm);
|
---|
4742 | }
|
---|
4743 |
|
---|
4744 | return vm;
|
---|
4745 | }
|
---|
4746 |
|
---|
4747 |
|
---|
4748 | bool VspBspViewCellsManager::ExportViewCells(const string filename,
|
---|
4749 | const bool exportPvs,
|
---|
4750 | const ObjectContainer &objects)
|
---|
4751 | {
|
---|
4752 | cout << "exporting view cells to xml ... ";
|
---|
4753 |
|
---|
4754 | #if ZIPPED_VIEWCELLS
|
---|
4755 | ogzstream stream(filename.c_str());
|
---|
4756 | cout << "!!!!!!!!!!!!!!!!!!!!!!" << endl;
|
---|
4757 | #else
|
---|
4758 | std::ofstream stream(filename.c_str());
|
---|
4759 | #endif
|
---|
4760 |
|
---|
4761 | // for output we need unique ids for each view cell
|
---|
4762 | CreateUniqueViewCellIds();
|
---|
4763 |
|
---|
4764 | stream << "<?xml version=\"1.0\" encoding=\"UTF-8\"?>"<<endl;
|
---|
4765 | stream << "<VisibilitySolution>" << endl;
|
---|
4766 |
|
---|
4767 | //-- the view space bounding box
|
---|
4768 | stream << "<ViewSpaceBox"
|
---|
4769 | << " min=\"" << mViewSpaceBox.Min().x << " " << mViewSpaceBox.Min().y << " " << mViewSpaceBox.Min().z << "\""
|
---|
4770 | << " max=\"" << mViewSpaceBox.Max().x << " " << mViewSpaceBox.Max().y << " " << mViewSpaceBox.Max().z << "\" />" << endl;
|
---|
4771 |
|
---|
4772 |
|
---|
4773 | //-- export bounding boxes
|
---|
4774 | stream << "<BoundingBoxes>" << endl;
|
---|
4775 |
|
---|
4776 | ObjectContainer::const_iterator oit, oit_end = objects.end();
|
---|
4777 |
|
---|
4778 | for (oit = objects.begin(); oit != oit_end; ++ oit)
|
---|
4779 | {
|
---|
4780 | MeshInstance *mi = dynamic_cast<MeshInstance *>(*oit);
|
---|
4781 | const AxisAlignedBox3 box = mi->GetBox();
|
---|
4782 |
|
---|
4783 | //-- the bounding boxes
|
---|
4784 | stream << "<BoundingBox" << " id=\"" << mi->GetId() << "\""
|
---|
4785 | << " min=\"" << box.Min().x << " " << box.Min().y << " " << box.Min().z << "\""
|
---|
4786 | << " max=\"" << box.Max().x << " " << box.Max().y << " " << box.Max().z << "\" />" << endl;
|
---|
4787 | }
|
---|
4788 |
|
---|
4789 | stream << "</BoundingBoxes>" << endl;
|
---|
4790 |
|
---|
4791 |
|
---|
4792 | //-- export the view cells and the pvs
|
---|
4793 | stream << "<HierarchyType name=\"vspBspTree\" />" << endl;
|
---|
4794 |
|
---|
4795 | const int numViewCells = mCurrentViewCellsStats.viewCells;
|
---|
4796 |
|
---|
4797 | stream << "<ViewCells number=\"" << numViewCells << "\" >" << endl;
|
---|
4798 |
|
---|
4799 | mViewCellsTree->Export(stream, exportPvs);
|
---|
4800 |
|
---|
4801 | stream << "</ViewCells>" << endl;
|
---|
4802 |
|
---|
4803 |
|
---|
4804 | //-- export the spatial hierarchy
|
---|
4805 |
|
---|
4806 | // the type of the view cells hierarchy
|
---|
4807 | stream << "<Hierarchy>" << endl;
|
---|
4808 | mVspBspTree->Export(stream);
|
---|
4809 | stream << endl << "</Hierarchy>" << endl;
|
---|
4810 |
|
---|
4811 | stream << "</VisibilitySolution>" << endl;
|
---|
4812 |
|
---|
4813 |
|
---|
4814 | stream.close();
|
---|
4815 | cout << "finished" << endl;
|
---|
4816 |
|
---|
4817 | return true;
|
---|
4818 | }
|
---|
4819 |
|
---|
4820 |
|
---|
4821 | int VspBspViewCellsManager::CastBeam(Beam &beam)
|
---|
4822 | {
|
---|
4823 | return mVspBspTree->CastBeam(beam);
|
---|
4824 | }
|
---|
4825 |
|
---|
4826 |
|
---|
4827 | void VspBspViewCellsManager::Finalize(ViewCell *viewCell,
|
---|
4828 | const bool createMesh)
|
---|
4829 | {
|
---|
4830 | float area = 0;
|
---|
4831 | float volume = 0;
|
---|
4832 |
|
---|
4833 | ViewCellContainer leaves;
|
---|
4834 | mViewCellsTree->CollectLeaves(viewCell, leaves);
|
---|
4835 |
|
---|
4836 | ViewCellContainer::const_iterator it, it_end = leaves.end();
|
---|
4837 |
|
---|
4838 | for (it = leaves.begin(); it != it_end; ++ it)
|
---|
4839 | {
|
---|
4840 | BspNodeGeometry geom;
|
---|
4841 | BspLeaf *leaf = dynamic_cast<BspViewCell *>(*it)->mLeaf;
|
---|
4842 | mVspBspTree->ConstructGeometry(leaf, geom);
|
---|
4843 |
|
---|
4844 | const float lVol = geom.GetVolume();
|
---|
4845 | const float lArea = geom.GetArea();
|
---|
4846 |
|
---|
4847 | //(*it)->SetVolume(vol);
|
---|
4848 | //(*it)->SetArea(area);
|
---|
4849 |
|
---|
4850 | area += lArea;
|
---|
4851 | volume += lVol;
|
---|
4852 |
|
---|
4853 | CreateMesh(*it);
|
---|
4854 | }
|
---|
4855 |
|
---|
4856 | viewCell->SetVolume(volume);
|
---|
4857 | viewCell->SetArea(area);
|
---|
4858 | }
|
---|
4859 |
|
---|
4860 |
|
---|
4861 | void VspBspViewCellsManager::TestSubdivision()
|
---|
4862 | {
|
---|
4863 | ViewCellContainer leaves;
|
---|
4864 | mViewCellsTree->CollectLeaves(mViewCellsTree->GetRoot(), leaves);
|
---|
4865 |
|
---|
4866 | ViewCellContainer::const_iterator it, it_end = leaves.end();
|
---|
4867 |
|
---|
4868 | const float vol = mViewSpaceBox.GetVolume();
|
---|
4869 | float subdivVol = 0;
|
---|
4870 | float newVol = 0;
|
---|
4871 |
|
---|
4872 | for (it = leaves.begin(); it != it_end; ++ it)
|
---|
4873 | {
|
---|
4874 | BspNodeGeometry geom;
|
---|
4875 | BspLeaf *leaf = dynamic_cast<BspViewCell *>(*it)->mLeaf;
|
---|
4876 | mVspBspTree->ConstructGeometry(leaf, geom);
|
---|
4877 |
|
---|
4878 | const float lVol = geom.GetVolume();
|
---|
4879 |
|
---|
4880 | newVol += lVol;
|
---|
4881 | subdivVol += (*it)->GetVolume();
|
---|
4882 |
|
---|
4883 | float thres = 0.9f;
|
---|
4884 | if ((lVol < ((*it)->GetVolume() * thres)) || (lVol * thres > ((*it)->GetVolume())))
|
---|
4885 | Debug << "warning: " << lVol << " " << (*it)->GetVolume() << endl;
|
---|
4886 | }
|
---|
4887 |
|
---|
4888 | Debug << "exact volume: " << vol << endl;
|
---|
4889 | Debug << "subdivision volume: " << subdivVol << endl;
|
---|
4890 | Debug << "new volume: " << newVol << endl;
|
---|
4891 | }
|
---|
4892 |
|
---|
4893 |
|
---|
4894 | void VspBspViewCellsManager::PrepareLoadedViewCells()
|
---|
4895 | {
|
---|
4896 | // TODO: do I still need this here?
|
---|
4897 | if (0)
|
---|
4898 | mVspBspTree->RepairViewCellsLeafLists();
|
---|
4899 | }
|
---|
4900 |
|
---|
4901 | void
|
---|
4902 | ViewCellsManager::ApplySpatialFilter(
|
---|
4903 | KdTree *kdTree,
|
---|
4904 | const float spatialFilterSize,
|
---|
4905 | ObjectPvs &pvs
|
---|
4906 | )
|
---|
4907 | {
|
---|
4908 |
|
---|
4909 | // now compute a new Pvs by including also objects intersecting the extended boxes of
|
---|
4910 | // visible objects
|
---|
4911 |
|
---|
4912 | Intersectable::NewMail();
|
---|
4913 |
|
---|
4914 | std::map<Intersectable *,
|
---|
4915 | PvsData<Intersectable *>,
|
---|
4916 | LtSample<Intersectable *> >::const_iterator oi;
|
---|
4917 |
|
---|
4918 | for (oi = pvs.mEntries.begin(); oi != pvs.mEntries.end(); ++oi) {
|
---|
4919 | Intersectable *object = (*oi).first;
|
---|
4920 | object->Mail();
|
---|
4921 | }
|
---|
4922 |
|
---|
4923 | ObjectPvs nPvs;
|
---|
4924 | int nPvsSize=0;
|
---|
4925 | // now go through the pvs again
|
---|
4926 | for (oi = pvs.mEntries.begin(); oi != pvs.mEntries.end(); ++oi) {
|
---|
4927 | Intersectable *object = (*oi).first;
|
---|
4928 |
|
---|
4929 | // Vector3 center = object->GetBox().Center();
|
---|
4930 | // AxisAlignedBox3 box(center - Vector3(spatialFilterSize/2),
|
---|
4931 | // center + Vector3(spatialFilterSize/2));
|
---|
4932 |
|
---|
4933 | AxisAlignedBox3 box = object->GetBox();
|
---|
4934 | box.Enlarge(Vector3(spatialFilterSize/2));
|
---|
4935 |
|
---|
4936 | ObjectContainer objects;
|
---|
4937 |
|
---|
4938 | // $$ warning collect objects takes only unmailed ones!
|
---|
4939 | kdTree->CollectObjects(box,
|
---|
4940 | objects);
|
---|
4941 | // cout<<"collected objects="<<objects.size()<<endl;
|
---|
4942 | ObjectContainer::const_iterator noi = objects.begin();
|
---|
4943 | for (; noi != objects.end(); ++noi) {
|
---|
4944 | Intersectable *o = *noi;
|
---|
4945 | // $$ JB warning: pdfs are not correct at this point!
|
---|
4946 | nPvs.AddSample(o, Limits::Small);
|
---|
4947 | nPvsSize++;
|
---|
4948 | }
|
---|
4949 | }
|
---|
4950 | // cout<<"nPvs size = "<<nPvsSize<<endl;
|
---|
4951 | pvs.Merge(nPvs);
|
---|
4952 | }
|
---|
4953 |
|
---|
4954 | void
|
---|
4955 | ViewCellsManager::ApplyFilter(ViewCell *viewCell,
|
---|
4956 | KdTree *kdTree,
|
---|
4957 | const float viewSpaceFilterSize,
|
---|
4958 | const float spatialFilterSize,
|
---|
4959 | ObjectPvs &pvs
|
---|
4960 | )
|
---|
4961 | {
|
---|
4962 | // extend the pvs of the viewcell by pvs of its neighbors
|
---|
4963 | // and apply spatial filter by including all neighbors of the objects
|
---|
4964 | // in the pvs
|
---|
4965 |
|
---|
4966 | // get all viewcells intersecting the viewSpaceFilterBox
|
---|
4967 | // and compute the pvs union
|
---|
4968 |
|
---|
4969 | //Vector3 center = viewCell->GetBox().Center();
|
---|
4970 | // Vector3 center = m->mBox.Center();
|
---|
4971 |
|
---|
4972 | // AxisAlignedBox3 box(center - Vector3(viewSpaceFilterSize/2),
|
---|
4973 | // center + Vector3(viewSpaceFilterSize/2));
|
---|
4974 |
|
---|
4975 | if (viewSpaceFilterSize >=0.0f) {
|
---|
4976 |
|
---|
4977 | bool usePrVS = false;
|
---|
4978 |
|
---|
4979 |
|
---|
4980 | if (!usePrVS) {
|
---|
4981 | AxisAlignedBox3 box = GetViewCellBox(viewCell);
|
---|
4982 | box.Enlarge(Vector3(viewSpaceFilterSize/2));
|
---|
4983 |
|
---|
4984 | ViewCellContainer viewCells;
|
---|
4985 | ComputeBoxIntersections(box, viewCells);
|
---|
4986 |
|
---|
4987 | // cout<<"box="<<box<<endl;
|
---|
4988 | ViewCellContainer::const_iterator it=viewCells.begin(), it_end = viewCells.end();
|
---|
4989 |
|
---|
4990 | int i;
|
---|
4991 | for (i=0; it != it_end; ++it, i++) {
|
---|
4992 | // cout<<"v"<<i<<" pvs="<<(*it)->GetPvs().mEntries.size()<<endl;
|
---|
4993 | pvs.Merge((*it)->GetPvs());
|
---|
4994 | }
|
---|
4995 | } else {
|
---|
4996 | PrVs prvs;
|
---|
4997 | AxisAlignedBox3 box = GetViewCellBox(viewCell);
|
---|
4998 |
|
---|
4999 | // mViewCellsManager->SetMaxFilterSize(1);
|
---|
5000 | GetPrVS(box.Center(), prvs, viewSpaceFilterSize);
|
---|
5001 | pvs = prvs.mViewCell->GetPvs();
|
---|
5002 | DeleteLocalMergeTree(prvs.mViewCell);
|
---|
5003 | }
|
---|
5004 | } else
|
---|
5005 | pvs = viewCell->GetPvs();
|
---|
5006 |
|
---|
5007 | if (spatialFilterSize >=0.0f)
|
---|
5008 | ApplySpatialFilter(kdTree, spatialFilterSize, pvs);
|
---|
5009 |
|
---|
5010 | }
|
---|
5011 |
|
---|
5012 |
|
---|
5013 |
|
---|
5014 | void
|
---|
5015 | ViewCellsManager::ApplyFilter(KdTree *kdTree,
|
---|
5016 | const float relViewSpaceFilterSize,
|
---|
5017 | const float relSpatialFilterSize
|
---|
5018 | )
|
---|
5019 | {
|
---|
5020 |
|
---|
5021 | ViewCellContainer::const_iterator it, it_end = mViewCells.end();
|
---|
5022 |
|
---|
5023 | ObjectPvs *newPvs;
|
---|
5024 | newPvs = new ObjectPvs[mViewCells.size()];
|
---|
5025 |
|
---|
5026 | float viewSpaceFilterSize = Magnitude(mViewSpaceBox.Size())*relViewSpaceFilterSize;
|
---|
5027 | float spatialFilterSize = Magnitude(kdTree->GetBox().Size())*relSpatialFilterSize;
|
---|
5028 |
|
---|
5029 | int i;
|
---|
5030 | for (i=0, it = mViewCells.begin(); it != it_end; ++ it, i++) {
|
---|
5031 | ApplyFilter(*it,
|
---|
5032 | kdTree,
|
---|
5033 | viewSpaceFilterSize,
|
---|
5034 | spatialFilterSize,
|
---|
5035 | newPvs[i]
|
---|
5036 | );
|
---|
5037 | }
|
---|
5038 |
|
---|
5039 | // now replace all pvss
|
---|
5040 | for (i= 0, it = mViewCells.begin(); it != it_end; ++ it, i++) {
|
---|
5041 | ObjectPvs &pvs = (*it)->GetPvs();
|
---|
5042 | pvs.Clear();
|
---|
5043 | pvs = newPvs[i];
|
---|
5044 | newPvs[i].Clear();
|
---|
5045 | }
|
---|
5046 |
|
---|
5047 | delete newPvs;
|
---|
5048 | }
|
---|
5049 |
|
---|
5050 | void VspBspViewCellsManager::TestFilter(const ObjectContainer &objects)
|
---|
5051 | {
|
---|
5052 | Exporter *exporter = Exporter::GetExporter("filter.x3d");
|
---|
5053 |
|
---|
5054 | Vector3 bsize = mViewSpaceBox.Size();
|
---|
5055 | const Vector3 viewPoint(mViewSpaceBox.Center());
|
---|
5056 | float w = Magnitude(mViewSpaceBox.Size()) * mFilterWidth;
|
---|
5057 | const Vector3 width = Vector3(w);
|
---|
5058 |
|
---|
5059 | PrVs testPrVs;
|
---|
5060 |
|
---|
5061 | if (exporter)
|
---|
5062 | {
|
---|
5063 | ViewCellContainer viewCells;
|
---|
5064 |
|
---|
5065 | const AxisAlignedBox3 tbox = GetFilterBBox(viewPoint, mFilterWidth);
|
---|
5066 |
|
---|
5067 | GetPrVS(viewPoint, testPrVs, GetFilterWidth());
|
---|
5068 |
|
---|
5069 | exporter->SetWireframe();
|
---|
5070 |
|
---|
5071 | exporter->SetForcedMaterial(RgbColor(1,1,1));
|
---|
5072 | exporter->ExportBox(tbox);
|
---|
5073 |
|
---|
5074 | exporter->SetFilled();
|
---|
5075 |
|
---|
5076 | exporter->SetForcedMaterial(RgbColor(0,1,0));
|
---|
5077 | ExportViewCellGeometry(exporter, GetViewCell(viewPoint));
|
---|
5078 |
|
---|
5079 | //exporter->ResetForcedMaterial();
|
---|
5080 | exporter->SetForcedMaterial(RgbColor(0,0,1));
|
---|
5081 | ExportViewCellGeometry(exporter, testPrVs.mViewCell);
|
---|
5082 |
|
---|
5083 | exporter->SetForcedMaterial(RgbColor(1,0,0));
|
---|
5084 | exporter->ExportGeometry(objects);
|
---|
5085 |
|
---|
5086 | delete exporter;
|
---|
5087 | }
|
---|
5088 | }
|
---|
5089 |
|
---|
5090 |
|
---|
5091 | void VspBspViewCellsManager::CollectMergeCandidates(const VssRayContainer &rays,
|
---|
5092 | vector<MergeCandidate> &candidates)
|
---|
5093 | {
|
---|
5094 | cout << "collecting merge candidates ... " << endl;
|
---|
5095 |
|
---|
5096 | if (mUseRaysForMerge)
|
---|
5097 | {
|
---|
5098 | mVspBspTree->CollectMergeCandidates(rays, candidates);
|
---|
5099 | }
|
---|
5100 | else
|
---|
5101 | {
|
---|
5102 | vector<BspLeaf *> leaves;
|
---|
5103 | mVspBspTree->CollectLeaves(leaves);
|
---|
5104 |
|
---|
5105 | mVspBspTree->CollectMergeCandidates(leaves, candidates);
|
---|
5106 | }
|
---|
5107 |
|
---|
5108 | cout << "fininshed collecting candidates" << endl;
|
---|
5109 | }
|
---|
5110 |
|
---|
5111 |
|
---|
5112 | //////////////////////////////////
|
---|
5113 | ViewCellsManager *ViewCellsManagerFactory::Create(const string mName)
|
---|
5114 | {
|
---|
5115 | //TODO
|
---|
5116 | return NULL;// new VspBspViewCellsManager();
|
---|
5117 | }
|
---|
5118 |
|
---|
5119 |
|
---|
5120 | }
|
---|