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 |
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14 |
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15 | ViewCellsManager::ViewCellsManager():
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16 | mRenderSimulator(NULL),
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17 | mConstructionSamples(0),
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18 | mPostProcessSamples(0),
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19 | mVisualizationSamples(0)
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20 | {
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21 | // post processing stuff |
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22 | environment->GetIntValue("ViewCells.PostProcessing.minPvsDif", mMinPvsDif); |
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23 | environment->GetIntValue("ViewCells.PostProcessing.minPvs", mMinPvs); |
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24 | environment->GetIntValue("ViewCells.PostProcessing.maxPvs", mMaxPvs);
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25 | }
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26 |
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27 | ViewCellsManager::ViewCellsManager(int constructionSamples):
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28 | mConstructionSamples(constructionSamples),
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29 | mRenderSimulator(NULL),
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30 | mPostProcessSamples(0),
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31 | mVisualizationSamples(0)
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32 | {
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33 | // post processing stuff |
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34 | environment->GetIntValue("ViewCells.PostProcessing.minPvsDif", mMinPvsDif); |
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35 | environment->GetIntValue("ViewCells.PostProcessing.minPvs", mMinPvs); |
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36 | environment->GetIntValue("ViewCells.PostProcessing.maxPvs", mMaxPvs);
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37 | }
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38 |
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39 | ViewCellsManager::~ViewCellsManager()
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40 | {
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41 | DEL_PTR(mRenderSimulator);
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42 | }
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43 |
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44 | void ViewCellsManager::InitRenderSimulator()
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45 | {
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46 | float objRenderCost = 0, vcOverhead = 0, moveSpeed = 0;
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47 |
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48 | environment->GetFloatValue("Simulation.objRenderCost",objRenderCost);
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49 | environment->GetFloatValue("Simulation.vcOverhead", vcOverhead);
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50 | environment->GetFloatValue("Simulation.moveSpeed", moveSpeed);
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51 |
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52 | mRenderSimulator->SetObjectRenderCost(objRenderCost);
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53 | mRenderSimulator->SetVcOverhead(vcOverhead);
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54 | mRenderSimulator->SetMoveSpeed(moveSpeed);
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55 | }
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56 |
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57 | bool ViewCellsManager::LoadViewCells(const string filename)
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58 | {
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59 | X3dParser parser;
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60 |
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61 | environment->GetFloatValue("ViewCells.height", parser.mViewCellHeight);
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62 |
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63 | bool success = parser.ParseFile(filename, *this);
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64 | Debug << (int)mViewCells.size() << " view cells loaded" << endl;
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65 |
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66 | return success;
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67 | }
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68 |
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69 | void ViewCellsManager::ComputeSampleContributions(const RayContainer &rays,
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70 | int &sampleContributions,
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71 | int &contributingSamples,
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72 | const bool castRays)
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73 | {
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74 | // view cells not yet constructed
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75 | if (!ViewCellsConstructed())
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76 | return;
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77 |
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78 | RayContainer::const_iterator it, it_end = rays.end();
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79 |
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80 | for (it = rays.begin(); it != it_end; ++ it)
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81 | {
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82 | sampleContributions += ComputeSampleContributions(*(*it), castRays);
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83 | contributingSamples += sampleContributions > 0;
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84 | }
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85 | }
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86 |
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87 | void ViewCellsManager::AddViewCell(ViewCell *viewCell)
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88 | {
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89 | mViewCells.push_back(viewCell);
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90 | }
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91 |
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92 | void ViewCellsManager::DeriveViewCells(const ObjectContainer &objects,
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93 | ViewCellContainer &viewCells,
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94 | const int maxViewCells) const
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95 | {
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96 | // maximal max viewcells
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97 | int limit = maxViewCells > 0 ?
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98 | Min((int)objects.size(), maxViewCells) : (int)objects.size();
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99 |
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100 | for (int i = 0; i < limit; ++ i)
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101 | {
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102 | Intersectable *object = objects[i];
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103 |
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104 | // extract the mesh instances
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105 | if (object->Type() == Intersectable::MESH_INSTANCE)
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106 | {
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107 | MeshInstance *inst = dynamic_cast<MeshInstance *>(object);
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108 |
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109 | ViewCell *viewCell = GenerateViewCell(inst->GetMesh());
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110 | viewCells.push_back(viewCell);
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111 | }
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112 | //TODO: transformed meshes
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113 | }
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114 | }
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115 |
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116 | ViewCell *ViewCellsManager::ExtrudeViewCell(const Triangle3 &baseTri,
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117 | const float height) const
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118 | {
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119 | // one mesh per view cell
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120 | Mesh *mesh = new Mesh();
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121 |
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122 | //-- construct prism
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123 |
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124 | // bottom
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125 | mesh->mFaces.push_back(new Face(2,1,0));
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126 | // top
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127 | mesh->mFaces.push_back(new Face(3,4,5));
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128 | // sides
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129 | mesh->mFaces.push_back(new Face(1, 4, 3, 0));
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130 | mesh->mFaces.push_back(new Face(2, 5, 4, 1));
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131 | mesh->mFaces.push_back(new Face(3, 5, 2, 0));
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132 |
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133 | //--- extrude new vertices for top of prism
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134 | Vector3 triNorm = baseTri.GetNormal();
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135 |
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136 | Triangle3 topTri;
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137 |
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138 | // add base vertices and calculate top vertices
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139 | for (int i = 0; i < 3; ++ i)
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140 | mesh->mVertices.push_back(baseTri.mVertices[i]);
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141 |
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142 | // add top vertices
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143 | for (int i = 0; i < 3; ++ i)
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144 | mesh->mVertices.push_back(baseTri.mVertices[i] + height * triNorm);
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145 |
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146 | mesh->Preprocess();
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147 |
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148 | return GenerateViewCell(mesh);
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149 | }
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150 |
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151 | ViewCell *ViewCellsManager::MergeViewCells(ViewCell &front, ViewCell &back) const
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152 | {
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153 | ViewCell *vc = GenerateViewCell();
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154 | // merge pvs
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155 | vc->GetPvs().Merge(front.GetPvs(), back.GetPvs());
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156 |
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157 | // merge ray sets
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158 | stable_sort(front.mPiercingRays.begin(), front.mPiercingRays.end());
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159 | stable_sort(back.mPiercingRays.begin(), back.mPiercingRays.end());
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160 |
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161 | std::merge(front.mPiercingRays.begin(), front.mPiercingRays.end(),
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162 | back.mPiercingRays.begin(), back.mPiercingRays.end(),
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163 | vc->mPiercingRays.begin());
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164 |
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165 | return vc;
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166 | }
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167 |
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168 | SimulationStatistics ViewCellsManager::SimulateRendering() const
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169 | {
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170 | if (!ViewCellsConstructed() || !mRenderSimulator)
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171 | return SimulationStatistics();
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172 |
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173 | return mRenderSimulator->SimulateRendering();
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174 | }
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175 |
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176 | ViewCell *ViewCellsManager::GenerateViewCell(Mesh *mesh) const
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177 | {
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178 | return new ViewCell(mesh);
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179 | }
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180 |
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181 |
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182 | void ViewCellsManager::SetVisualizationSamples(const int visSamples)
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183 | {
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184 | mVisualizationSamples = visSamples;
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185 | }
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186 |
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187 | void ViewCellsManager::SetConstructionSamples(const int constructionSamples)
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188 | {
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189 | mConstructionSamples = constructionSamples;
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190 | }
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191 |
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192 | void ViewCellsManager::SetPostProcessSamples(const int postProcessSamples)
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193 | {
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194 | mPostProcessSamples = postProcessSamples;
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195 | }
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196 |
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197 | int ViewCellsManager::GetVisualizationSamples() const
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198 | {
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199 | return mVisualizationSamples;
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200 | }
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201 |
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202 | int ViewCellsManager::GetConstructionSamples() const
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203 | {
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204 | return mConstructionSamples;
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205 | }
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206 |
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207 | int ViewCellsManager::GetPostProcessSamples() const
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208 | {
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209 | return mPostProcessSamples;
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210 | }
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211 |
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212 | /**********************************************************************/
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213 | /* BspViewCellsManager implementation */
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214 | /**********************************************************************/
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215 |
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216 | BspViewCellsManager::BspViewCellsManager(BspTree *bspTree, int constructionSamples):
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217 | ViewCellsManager(constructionSamples),
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218 | mBspTree(bspTree)
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219 | {
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220 | mRenderSimulator = new BspRenderSimulator(bspTree);
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221 | InitRenderSimulator();
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222 | }
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223 |
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224 | bool BspViewCellsManager::ViewCellsConstructed() const
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225 | {
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226 | return mBspTree->GetRoot() != NULL;
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227 | }
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228 |
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229 | ViewCell *BspViewCellsManager::GenerateViewCell(Mesh *mesh) const
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230 | {
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231 | return new BspViewCell(mesh);
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232 | }
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233 |
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234 | int BspViewCellsManager::Construct(const ObjectContainer &objects,
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235 | const VssRayContainer &rays,
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236 | AxisAlignedBox3 *sceneBbox)
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237 | {
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238 | // if view cells were already constructed
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239 | if (ViewCellsConstructed())
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240 | return 0;
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241 |
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242 | int sampleContributions = 0;
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243 |
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244 | RayContainer sampleRays;
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245 |
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246 | int limit = min (mConstructionSamples, (int)rays.size());
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247 |
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248 | // construct view cells using the collected samples
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249 | Debug << "construcing bsp view cells from "
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250 | << limit << " samples " << endl;
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251 |
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252 | for (int i = 0; i < limit; ++ i)
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253 | sampleRays.push_back(new Ray(*rays[i]));
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254 |
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255 | if (mViewCells.empty()) // no view cells loaded
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256 | mBspTree->Construct(objects, sampleRays);
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257 | else
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258 | mBspTree->Construct(mViewCells);
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259 |
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260 | Debug << mBspTree->GetStatistics() << endl;
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261 |
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262 | return sampleContributions;
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263 | }
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264 |
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265 | int BspViewCellsManager::ComputeSampleContributions(Ray &ray, const bool castRay)
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266 | {
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267 | // view cells not yet constructed
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268 | if (!ViewCellsConstructed())
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269 | return 0;
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270 |
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271 | int contributingSamples = 0;
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272 |
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273 | if (castRay)
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274 | mBspTree->CastRay(ray);
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275 |
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276 | //if (mBspTree->bspIntersections.empty()) return 0;
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277 |
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278 | Intersectable *tObject =
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279 | !ray.intersections.empty() ? ray.intersections[0].mObject : NULL;
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280 |
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281 | Intersectable *sObject = ray.sourceObject.mObject;
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282 |
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283 | if (sObject || tObject)
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284 | {
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285 | // object can be seen from the view cell => add to view cell pvs
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286 | for (int j = 0; j < (int)ray.bspIntersections.size(); ++ j)
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287 | {
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288 | BspLeaf *leaf = ray.bspIntersections[j].mLeaf;
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289 |
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290 | // if ray not outside of view space
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291 | if (leaf->GetViewCell() != mBspTree->GetRootCell())
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292 | {
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293 | if (sObject)
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294 | {
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295 | contributingSamples +=
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296 | leaf->GetViewCell()->GetPvs().AddSample(sObject);
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297 | }
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298 |
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299 | if (tObject)
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300 | {
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301 | contributingSamples +=
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302 | leaf->GetViewCell()->GetPvs().AddSample(tObject);
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303 | }
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304 | }
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305 | }
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306 | }
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307 |
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308 | // rays passing through this viewcell
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309 | if (0)
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310 | for (int j = 1; j < ((int)ray.bspIntersections.size() - 1); ++ j)
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311 | {
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312 | BspLeaf *leaf = ray.bspIntersections[j].mLeaf;
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313 |
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314 | if (leaf->GetViewCell() != mBspTree->GetRootCell())
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315 | leaf->GetViewCell()->
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316 | AddPassingRay(ray, contributingSamples ? 1 : 0);
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317 | }
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318 |
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319 | return contributingSamples;
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320 | }
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321 |
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322 | int BspViewCellsManager::PostProcess(const ObjectContainer &objects,
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323 | const RayContainer &rays)
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324 | {
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325 | if (!ViewCellsConstructed())
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326 | {
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327 | Debug << "view cells not constructed" << endl;
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328 | return 0;
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329 | }
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330 |
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331 |
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332 | //-- post processing of bsp view cells
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333 | int vcSize = 0;
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334 | int pvsSize = 0;
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335 |
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336 | BspViewCellsStatistics vcStats;
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337 | mBspTree->EvaluateViewCellsStats(vcStats);
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338 | Debug << "original view cell partition:\n" << vcStats << endl;
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339 |
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340 | if (1) // export view cells before merge
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341 | {
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342 | cout << "exporting initial view cells (=leaves) ... ";
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343 | Exporter *exporter = Exporter::GetExporter("view_cells.x3d");
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344 |
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345 | if (exporter)
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346 | {
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347 | exporter->SetWireframe();
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348 | exporter->ExportBspLeaves(*mBspTree, vcStats.maxPvs);
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349 | //exporter->ExportBspViewCellPartition(*mBspTree, 0);
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350 |
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351 | if (0)
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352 | {
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353 | Material m;//= RandomMaterial();
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354 | m.mDiffuseColor = RgbColor(0, 1, 0);
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355 | exporter->SetForcedMaterial(m);
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356 | exporter->SetWireframe();
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357 |
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358 | exporter->ExportGeometry(objects);
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359 | }
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360 |
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361 | delete exporter;
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362 | }
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363 | cout << "finished" << endl;
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364 |
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365 | //-- render simulation
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366 | cout << "\nevaluating bsp view cells render time before merge ... ";
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367 |
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368 | const SimulationStatistics ss = SimulateRendering();
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369 |
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370 | cout << " finished" << endl;
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371 | cout << ss << endl;
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372 | Debug << ss << endl;
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373 | }
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374 |
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375 |
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376 | cout << "starting post processing using " << mPostProcessSamples << " samples ... ";
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377 |
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378 | long startTime = GetTime();
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379 |
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380 | //-- merge or subdivide view cells
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381 | int merged = 0;
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382 |
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383 | RayContainer::const_iterator rit, rit_end = rays.end();
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384 | vector<Ray::BspIntersection>::const_iterator iit;
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385 |
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386 | int limit = min((int)rays.size(), mPostProcessSamples);
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387 |
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388 | for (int i = 0; i < limit; ++ i)
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389 | {
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390 | Ray *ray = rays[i];
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391 |
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392 | // traverse leaves stored in the rays and compare and merge consecutive
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393 | // leaves (i.e., the neighbors in the tree)
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394 | if (ray->bspIntersections.size() < 2)
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395 | continue;
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396 |
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397 | iit = ray->bspIntersections.begin();
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398 |
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399 | BspLeaf *previousLeaf = (*iit).mLeaf;
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400 | ++ iit;
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401 |
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402 | for (; iit != ray->bspIntersections.end(); ++ iit)
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403 | {
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404 | BspLeaf *leaf = (*iit).mLeaf;
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405 |
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406 | if (ShouldMerge(leaf, previousLeaf))
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407 | {
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408 | MergeBspLeafViewCells(leaf, previousLeaf);
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409 |
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410 | ++ merged;
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411 | }
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412 |
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413 | previousLeaf = leaf;
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414 | }
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415 | }
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416 |
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417 | //-- stats and visualizations
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418 | cout << "finished" << endl;
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419 | cout << "merged " << merged << " view cells in "
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420 | << TimeDiff(startTime, GetTime()) *1e-3 << " secs" << endl;
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421 |
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422 | // statistics after post process
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423 | vcStats.Reset();
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424 | mBspTree->EvaluateViewCellsStats(vcStats);
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425 | Debug << "post processed view cell partition:\n" << vcStats << endl;
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426 |
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427 | return merged;
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428 | }
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429 |
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430 | int BspViewCellsManager::GetType() const
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431 | {
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432 | return BSP;
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433 | }
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434 |
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435 |
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436 | void BspViewCellsManager::Visualize(const ObjectContainer &objects,
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437 | const RayContainer &sampleRays)
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438 | {
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439 | if (!ViewCellsConstructed())
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440 | return;
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441 |
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442 | //-- recount pvs
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443 | BspViewCellsStatistics vcStats;
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444 | mBspTree->EvaluateViewCellsStats(vcStats);
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445 |
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446 | if (1) // export view cells
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447 | {
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448 | cout << "exporting view cells after merge ... ";
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449 | Exporter *exporter = Exporter::GetExporter("merged_view_cells.x3d");
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450 |
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451 | if (exporter)
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452 | {
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453 | exporter->ExportBspViewCellPartition(*mBspTree, vcStats.maxPvs);
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454 | //exporter->ExportBspViewCellPartition(*mBspTree, 0);
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455 | delete exporter;
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456 | }
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457 |
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458 | cout << "finished" << endl;
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459 | }
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460 |
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461 | //-- visualization of the BSP splits
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462 | bool exportSplits = false;
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463 | environment->GetBoolValue("BspTree.Visualization.exportSplits", exportSplits);
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464 |
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465 | if (exportSplits)
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466 | {
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467 | cout << "exporting splits ... ";
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468 | ExportSplits(objects, sampleRays);
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469 | cout << "finished" << endl;
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470 | }
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471 |
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472 | ExportBspPvs(objects, sampleRays);
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473 | }
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474 |
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475 |
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476 | inline bool vc_gt(ViewCell *a, ViewCell *b)
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477 | {
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478 | return a->GetPvs().GetSize() > b->GetPvs().GetSize();
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479 | }
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480 |
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481 | void BspViewCellsManager::ExportSplits(const ObjectContainer &objects,
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482 | const RayContainer &sampleRays)
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483 | {
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484 | Exporter *exporter = Exporter::GetExporter("bsp_splits.x3d");
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485 |
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486 | if (exporter)
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487 | {
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488 | Material m;
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489 | m.mDiffuseColor = RgbColor(1, 0, 0);
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490 | exporter->SetForcedMaterial(m);
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491 | exporter->SetWireframe();
|
---|
492 | exporter->ExportBspSplits(*mBspTree, true);
|
---|
493 |
|
---|
494 | // take forced material, else big scenes cannot be viewed
|
---|
495 | m.mDiffuseColor = RgbColor(0, 1, 0);
|
---|
496 | exporter->SetForcedMaterial(m);
|
---|
497 | exporter->SetFilled();
|
---|
498 |
|
---|
499 | exporter->ResetForcedMaterial();
|
---|
500 |
|
---|
501 | // export rays
|
---|
502 | if (0)
|
---|
503 | {
|
---|
504 | RayContainer outRays;
|
---|
505 |
|
---|
506 | int raysSize = min((int)sampleRays.size(), mVisualizationSamples);
|
---|
507 |
|
---|
508 | for (int i = 0; i < raysSize; ++ i)
|
---|
509 | {
|
---|
510 | // only rays piercing geometry
|
---|
511 | if (!sampleRays[i]->intersections.empty())
|
---|
512 | outRays.push_back(sampleRays[i]);
|
---|
513 | }
|
---|
514 |
|
---|
515 | // export rays
|
---|
516 | exporter->ExportRays(outRays, 1000, RgbColor(1, 1, 0));
|
---|
517 | }
|
---|
518 |
|
---|
519 | if (0)
|
---|
520 | exporter->ExportGeometry(objects);
|
---|
521 |
|
---|
522 | delete exporter;
|
---|
523 | }
|
---|
524 | }
|
---|
525 |
|
---|
526 | void BspViewCellsManager::ExportBspPvs(const ObjectContainer &objects,
|
---|
527 | const RayContainer &sampleRays)
|
---|
528 | {
|
---|
529 | const int leafOut = 10;
|
---|
530 |
|
---|
531 | ViewCell::NewMail();
|
---|
532 |
|
---|
533 | //-- some rays for output
|
---|
534 | const int raysOut = min((int)sampleRays.size(), mVisualizationSamples);
|
---|
535 | Debug << "visualization using " << raysOut << " samples" << endl;
|
---|
536 |
|
---|
537 |
|
---|
538 | if (1)
|
---|
539 | {
|
---|
540 | //-- some random view cells and rays for output
|
---|
541 | vector<BspLeaf *> bspLeaves;
|
---|
542 |
|
---|
543 | for (int i = 0; i < leafOut; ++ i)
|
---|
544 | bspLeaves.push_back(mBspTree->GetRandomLeaf());
|
---|
545 |
|
---|
546 | for (int i = 0; i < bspLeaves.size(); ++ i)
|
---|
547 | {
|
---|
548 | BspLeaf *leaf = bspLeaves[i];
|
---|
549 |
|
---|
550 | RayContainer vcRays;
|
---|
551 |
|
---|
552 | cout << "creating output for view cell " << i << " ... ";
|
---|
553 |
|
---|
554 | // check whether we can add the current ray to the output rays
|
---|
555 | for (int k = 0; k < raysOut; ++ k)
|
---|
556 | {
|
---|
557 | Ray *ray = sampleRays[k];
|
---|
558 |
|
---|
559 | for (int j = 0; j < (int)ray->bspIntersections.size(); ++ j)
|
---|
560 | {
|
---|
561 | BspLeaf *leaf2 = ray->bspIntersections[j].mLeaf;
|
---|
562 |
|
---|
563 | if (leaf->GetViewCell() == leaf2->GetViewCell())
|
---|
564 | {
|
---|
565 | vcRays.push_back(ray);
|
---|
566 | }
|
---|
567 | }
|
---|
568 | }
|
---|
569 |
|
---|
570 | Intersectable::NewMail();
|
---|
571 |
|
---|
572 | BspViewCell *vc = dynamic_cast<BspViewCell *>(leaf->GetViewCell());
|
---|
573 |
|
---|
574 | //bspLeaves[j]->Mail();
|
---|
575 | char s[64]; sprintf(s, "bsp-pvs%04d.x3d", i);
|
---|
576 |
|
---|
577 | Exporter *exporter = Exporter::GetExporter(s);
|
---|
578 | exporter->SetFilled();
|
---|
579 |
|
---|
580 | exporter->SetWireframe();
|
---|
581 | //exporter->SetFilled();
|
---|
582 |
|
---|
583 | Material m;//= RandomMaterial();
|
---|
584 | m.mDiffuseColor = RgbColor(1, 1, 0);
|
---|
585 | exporter->SetForcedMaterial(m);
|
---|
586 |
|
---|
587 | if (vc->GetMesh())
|
---|
588 | exporter->ExportViewCell(vc);
|
---|
589 | else
|
---|
590 | {
|
---|
591 | PolygonContainer vcGeom;
|
---|
592 | // export view cell geometry
|
---|
593 | mBspTree->ConstructGeometry(vc, vcGeom);
|
---|
594 | exporter->ExportPolygons(vcGeom);
|
---|
595 | CLEAR_CONTAINER(vcGeom);
|
---|
596 | }
|
---|
597 |
|
---|
598 | Debug << i << ": pvs size=" << (int)vc->GetPvs().GetSize()
|
---|
599 | << ", piercing rays=" << (int)vcRays.size() << endl;
|
---|
600 |
|
---|
601 | // export rays piercing this view cell
|
---|
602 | exporter->ExportRays(vcRays, 1000, RgbColor(0, 1, 0));
|
---|
603 |
|
---|
604 | m.mDiffuseColor = RgbColor(1, 0, 0);
|
---|
605 | exporter->SetForcedMaterial(m);
|
---|
606 |
|
---|
607 | // exporter->SetWireframe();
|
---|
608 | exporter->SetFilled();
|
---|
609 |
|
---|
610 | ViewCellPvsMap::iterator it, it_end = vc->GetPvs().mEntries.end();
|
---|
611 | // output PVS of view cell
|
---|
612 | for (it = vc->GetPvs().mEntries.begin(); it != it_end; ++ it)
|
---|
613 | {
|
---|
614 | Intersectable *intersect = (*it).first;
|
---|
615 | if (!intersect->Mailed())
|
---|
616 | {
|
---|
617 | exporter->ExportIntersectable(intersect);
|
---|
618 | intersect->Mail();
|
---|
619 | }
|
---|
620 | }
|
---|
621 |
|
---|
622 | DEL_PTR(exporter);
|
---|
623 | cout << "finished" << endl;
|
---|
624 | }
|
---|
625 | }
|
---|
626 | else
|
---|
627 | {
|
---|
628 | ViewCellContainer viewCells;
|
---|
629 | RayContainer vcRays;
|
---|
630 |
|
---|
631 | mBspTree->CollectViewCells(viewCells);
|
---|
632 | stable_sort(viewCells.begin(), viewCells.end(), vc_gt);
|
---|
633 |
|
---|
634 | int limit = min(leafOut, (int)viewCells.size());
|
---|
635 |
|
---|
636 | for (int i = 0; i < limit; ++ i)
|
---|
637 | {
|
---|
638 | cout << "creating output for view cell " << i << " ... ";
|
---|
639 |
|
---|
640 | Intersectable::NewMail();
|
---|
641 | BspViewCell *vc = dynamic_cast<BspViewCell *>(viewCells[i]);
|
---|
642 |
|
---|
643 | cout << "creating output for view cell " << i << " ... ";
|
---|
644 | // check whether we can add the current ray to the output rays
|
---|
645 | for (int k = 0; k < raysOut; ++ k)
|
---|
646 | {
|
---|
647 | Ray *ray = sampleRays[k];
|
---|
648 |
|
---|
649 | for (int j = 0; j < (int)ray->bspIntersections.size(); ++ j)
|
---|
650 | {
|
---|
651 | BspLeaf *leaf = ray->bspIntersections[j].mLeaf;
|
---|
652 |
|
---|
653 | if (vc == leaf->GetViewCell())
|
---|
654 | {
|
---|
655 | vcRays.push_back(ray);
|
---|
656 | }
|
---|
657 | }
|
---|
658 | }
|
---|
659 |
|
---|
660 | //bspLeaves[j]->Mail();
|
---|
661 | char s[64]; sprintf(s, "bsp-pvs%04d.x3d", i);
|
---|
662 |
|
---|
663 | Exporter *exporter = Exporter::GetExporter(s);
|
---|
664 |
|
---|
665 | exporter->SetWireframe();
|
---|
666 |
|
---|
667 | Material m;//= RandomMaterial();
|
---|
668 | m.mDiffuseColor = RgbColor(0, 1, 0);
|
---|
669 | exporter->SetForcedMaterial(m);
|
---|
670 |
|
---|
671 | if (vc->GetMesh())
|
---|
672 | exporter->ExportViewCell(vc);
|
---|
673 | else
|
---|
674 | {
|
---|
675 | PolygonContainer cell;
|
---|
676 | // export view cell
|
---|
677 | mBspTree->ConstructGeometry(vc, cell);
|
---|
678 | exporter->ExportPolygons(cell);
|
---|
679 | CLEAR_CONTAINER(cell);
|
---|
680 | }
|
---|
681 |
|
---|
682 |
|
---|
683 | Debug << i << ": pvs size=" << (int)vc->GetPvs().GetSize()
|
---|
684 | << ", piercing rays=" << (int)vcRays.size() << endl;
|
---|
685 |
|
---|
686 |
|
---|
687 | // export rays piercing this view cell
|
---|
688 | exporter->ExportRays(vcRays, 1000, RgbColor(0, 1, 0));
|
---|
689 |
|
---|
690 | m.mDiffuseColor = RgbColor(1, 0, 0);
|
---|
691 | exporter->SetForcedMaterial(m);
|
---|
692 |
|
---|
693 | ViewCellPvsMap::const_iterator it,
|
---|
694 | it_end = vc->GetPvs().mEntries.end();
|
---|
695 |
|
---|
696 | // output PVS of view cell
|
---|
697 | for (it = vc->GetPvs().mEntries.begin(); it != it_end; ++ it)
|
---|
698 | {
|
---|
699 | Intersectable *intersect = (*it).first;
|
---|
700 | if (!intersect->Mailed())
|
---|
701 | {
|
---|
702 | Material m = RandomMaterial();
|
---|
703 |
|
---|
704 | exporter->SetForcedMaterial(m);
|
---|
705 |
|
---|
706 | exporter->ExportIntersectable(intersect);
|
---|
707 | intersect->Mail();
|
---|
708 | }
|
---|
709 | }
|
---|
710 |
|
---|
711 | DEL_PTR(exporter);
|
---|
712 | cout << "finished" << endl;
|
---|
713 | }
|
---|
714 | }
|
---|
715 | }
|
---|
716 |
|
---|
717 |
|
---|
718 | bool BspViewCellsManager::MergeBspLeafViewCells(BspLeaf *front, BspLeaf *back) const |
---|
719 | { |
---|
720 | BspViewCell *viewCell = |
---|
721 | dynamic_cast<BspViewCell *>(MergeViewCells(*front->GetViewCell(), *back->GetViewCell())); |
---|
722 | |
---|
723 | if (!viewCell) |
---|
724 | return false; |
---|
725 | |
---|
726 | // change view cells of all leaves associated with the |
---|
727 | // previous view cells |
---|
728 | |
---|
729 | BspViewCell *fVc = front->GetViewCell(); |
---|
730 | BspViewCell *bVc = back->GetViewCell(); |
---|
731 | |
---|
732 | vector<BspLeaf *> fLeaves = fVc->mBspLeaves; |
---|
733 | vector<BspLeaf *> bLeaves = bVc->mBspLeaves; |
---|
734 | |
---|
735 | vector<BspLeaf *>::const_iterator it; |
---|
736 | |
---|
737 | for (it = fLeaves.begin(); it != fLeaves.end(); ++ it) |
---|
738 | { |
---|
739 | (*it)->SetViewCell(viewCell); |
---|
740 | viewCell->mBspLeaves.push_back(*it); |
---|
741 | } |
---|
742 | for (it = bLeaves.begin(); it != bLeaves.end(); ++ it) |
---|
743 | { |
---|
744 | (*it)->SetViewCell(viewCell); |
---|
745 | viewCell->mBspLeaves.push_back(*it); |
---|
746 | } |
---|
747 | |
---|
748 | DEL_PTR(fVc); |
---|
749 | DEL_PTR(bVc); |
---|
750 | |
---|
751 | return true; |
---|
752 | } |
---|
753 | |
---|
754 | bool BspViewCellsManager::ShouldMerge(BspLeaf *front, BspLeaf *back) const |
---|
755 | { |
---|
756 | ViewCell *fvc = front->GetViewCell(); |
---|
757 | ViewCell *bvc = back->GetViewCell(); |
---|
758 | |
---|
759 | if ((fvc == mBspTree->GetRootCell()) || (bvc == mBspTree->GetRootCell()) || (fvc == bvc)) |
---|
760 | return false; |
---|
761 | |
---|
762 | int fdiff = fvc->GetPvs().Diff(bvc->GetPvs()); |
---|
763 | |
---|
764 | if (fvc->GetPvs().GetSize() + fdiff < mMaxPvs) |
---|
765 | { |
---|
766 | if ((fvc->GetPvs().GetSize() < mMinPvs) || |
---|
767 | (bvc->GetPvs().GetSize() < mMinPvs) || |
---|
768 | ((fdiff < mMinPvsDif) && (bvc->GetPvs().Diff(fvc->GetPvs()) < mMinPvsDif))) |
---|
769 | { |
---|
770 | return true; |
---|
771 | } |
---|
772 | } |
---|
773 | |
---|
774 | return false; |
---|
775 | } |
---|
776 | |
---|
777 |
|
---|
778 |
|
---|
779 | /**********************************************************************/
|
---|
780 | /* KdViewCellsManager implementation */
|
---|
781 | /**********************************************************************/
|
---|
782 |
|
---|
783 | KdViewCellsManager::KdViewCellsManager(KdTree *kdTree):
|
---|
784 | ViewCellsManager(),
|
---|
785 | mKdTree(kdTree),
|
---|
786 | mKdPvsDepth(100)
|
---|
787 | {
|
---|
788 | mRenderSimulator = new KdRenderSimulator(mKdTree);
|
---|
789 | InitRenderSimulator();
|
---|
790 | }
|
---|
791 |
|
---|
792 | int KdViewCellsManager::Construct(const ObjectContainer &objects,
|
---|
793 | const VssRayContainer &rays,
|
---|
794 | AxisAlignedBox3 *sceneBbox)
|
---|
795 | {
|
---|
796 | // if view cells already constructed
|
---|
797 | if (ViewCellsConstructed())
|
---|
798 | return 0;
|
---|
799 |
|
---|
800 | Debug << "Constructing bsp view cells" << endl;
|
---|
801 |
|
---|
802 | mKdTree->Construct();
|
---|
803 |
|
---|
804 | return 0;
|
---|
805 | }
|
---|
806 |
|
---|
807 | bool KdViewCellsManager::ViewCellsConstructed() const
|
---|
808 | {
|
---|
809 | return mKdTree->GetRoot() != NULL;
|
---|
810 | }
|
---|
811 |
|
---|
812 | int KdViewCellsManager::PostProcess(const ObjectContainer &objects,
|
---|
813 | const RayContainer &rays)
|
---|
814 | {
|
---|
815 | return 0;
|
---|
816 | }
|
---|
817 |
|
---|
818 | void KdViewCellsManager::Visualize(const ObjectContainer &objects,
|
---|
819 | const RayContainer &sampleRays)
|
---|
820 | {
|
---|
821 | if (!ViewCellsConstructed())
|
---|
822 | return;
|
---|
823 |
|
---|
824 | const int pvsOut = min((int)objects.size(), 10);
|
---|
825 |
|
---|
826 | int limit = min(mVisualizationSamples, (int)sampleRays.size());
|
---|
827 |
|
---|
828 | RayContainer *rays = new RayContainer[pvsOut];
|
---|
829 |
|
---|
830 | for (int i = 0; i < limit; ++ i)
|
---|
831 | {
|
---|
832 | Ray *ray = sampleRays[i];
|
---|
833 |
|
---|
834 | if (!ray->intersections.empty())
|
---|
835 | {
|
---|
836 | // check whether we can add this to the rays
|
---|
837 | for (int j = 0; j < pvsOut; j++)
|
---|
838 | {
|
---|
839 | if (objects[j] == ray->intersections[0].mObject)
|
---|
840 | {
|
---|
841 | rays[j].push_back(ray);
|
---|
842 | }
|
---|
843 | }
|
---|
844 | }
|
---|
845 | }
|
---|
846 |
|
---|
847 | bool exportRays = false;
|
---|
848 | if (exportRays) {
|
---|
849 | Exporter *exporter = NULL;
|
---|
850 | exporter = Exporter::GetExporter("sample-rays.x3d");
|
---|
851 | exporter->SetWireframe();
|
---|
852 | exporter->ExportKdTree(*mKdTree);
|
---|
853 |
|
---|
854 | for (i=0; i < pvsOut; i++)
|
---|
855 | exporter->ExportRays(rays[i], 1000, RgbColor(1, 0, 0));
|
---|
856 | exporter->SetFilled();
|
---|
857 |
|
---|
858 | delete exporter;
|
---|
859 | }
|
---|
860 |
|
---|
861 | for (int k=0; k < pvsOut; k++)
|
---|
862 | {
|
---|
863 | Intersectable *object = objects[k];
|
---|
864 | char s[64];
|
---|
865 | sprintf(s, "sample-pvs%04d.x3d", k);
|
---|
866 |
|
---|
867 | Exporter *exporter = Exporter::GetExporter(s);
|
---|
868 | exporter->SetWireframe();
|
---|
869 |
|
---|
870 | KdPvsMap::iterator i = object->mKdPvs.mEntries.begin();
|
---|
871 | Intersectable::NewMail();
|
---|
872 |
|
---|
873 | // avoid adding the object to the list
|
---|
874 | object->Mail();
|
---|
875 | ObjectContainer visibleObjects;
|
---|
876 |
|
---|
877 | for (; i != object->mKdPvs.mEntries.end(); i++)
|
---|
878 | {
|
---|
879 | KdNode *node = (*i).first;
|
---|
880 | exporter->ExportBox(mKdTree->GetBox(node));
|
---|
881 | mKdTree->CollectObjects(node, visibleObjects);
|
---|
882 | }
|
---|
883 |
|
---|
884 | exporter->ExportRays(rays[k], 1000, RgbColor(0, 1, 0));
|
---|
885 | exporter->SetFilled();
|
---|
886 |
|
---|
887 | for (int j = 0; j < visibleObjects.size(); j++)
|
---|
888 | exporter->ExportIntersectable(visibleObjects[j]);
|
---|
889 |
|
---|
890 | Material m;
|
---|
891 | m.mDiffuseColor = RgbColor(1, 0, 0);
|
---|
892 | exporter->SetForcedMaterial(m);
|
---|
893 | exporter->ExportIntersectable(object);
|
---|
894 |
|
---|
895 | delete exporter;
|
---|
896 | }
|
---|
897 | DEL_PTR(rays);
|
---|
898 | }
|
---|
899 |
|
---|
900 | int KdViewCellsManager::GetType() const
|
---|
901 | {
|
---|
902 | return ViewCellsManager::KD;
|
---|
903 | }
|
---|
904 |
|
---|
905 | int KdViewCellsManager::ComputeSampleContributions(Ray &ray, const bool castRay)
|
---|
906 | {
|
---|
907 | // view cells not yet constructed
|
---|
908 | if (!ViewCellsConstructed())
|
---|
909 | return 0;
|
---|
910 |
|
---|
911 | if (castRay)
|
---|
912 | mKdTree->CastRay(ray);
|
---|
913 |
|
---|
914 | if (ray.kdLeaves.empty())
|
---|
915 | return 0;
|
---|
916 |
|
---|
917 | Intersectable *tObject =
|
---|
918 | !ray.intersections.empty() ? ray.intersections[0].mObject : NULL;
|
---|
919 |
|
---|
920 | Intersectable *sObject =
|
---|
921 | ray.sourceObject.mObject;
|
---|
922 |
|
---|
923 | int contributingSamples = 0;
|
---|
924 |
|
---|
925 | int objects = 0;
|
---|
926 |
|
---|
927 | if (sObject)
|
---|
928 | objects++;
|
---|
929 | if (tObject)
|
---|
930 | objects++;
|
---|
931 |
|
---|
932 | for (int j = 1; j < ((int)ray.kdLeaves.size() - 1); ++ j)
|
---|
933 | {
|
---|
934 | ray.kdLeaves[j]->AddPassingRay2(ray, objects,
|
---|
935 | (int)ray.kdLeaves.size());
|
---|
936 | }
|
---|
937 |
|
---|
938 | if (!objects)
|
---|
939 | return 0;
|
---|
940 |
|
---|
941 | for (int j=0; j < ray.kdLeaves.size(); j++)
|
---|
942 | {
|
---|
943 | KdNode *node = GetNodeForPvs(ray.kdLeaves[j]);
|
---|
944 |
|
---|
945 | if (sObject)
|
---|
946 | contributingSamples += sObject->mKdPvs.AddSample(node);
|
---|
947 | if (tObject)
|
---|
948 | contributingSamples += tObject->mKdPvs.AddSample(node);
|
---|
949 | }
|
---|
950 |
|
---|
951 | return contributingSamples;
|
---|
952 | }
|
---|
953 |
|
---|
954 |
|
---|
955 | KdNode *KdViewCellsManager::GetNodeForPvs(KdLeaf *leaf)
|
---|
956 | {
|
---|
957 | KdNode *node = leaf;
|
---|
958 |
|
---|
959 | while (node->mParent && node->mDepth > mKdPvsDepth)
|
---|
960 | node = node->mParent;
|
---|
961 | return node;
|
---|
962 | }
|
---|
963 |
|
---|
964 |
|
---|
965 |
|
---|
966 | /**********************************************************************/
|
---|
967 | /* VspKdViewCellsManager implementation */
|
---|
968 | /**********************************************************************/
|
---|
969 |
|
---|
970 | VspKdViewCellsManager::VspKdViewCellsManager(VspKdTree *vspKdTree, int constructionSamples):
|
---|
971 | ViewCellsManager(constructionSamples),
|
---|
972 | mVspKdTree(vspKdTree)
|
---|
973 | {
|
---|
974 | mRenderSimulator = new VspKdRenderSimulator(vspKdTree);
|
---|
975 | InitRenderSimulator();
|
---|
976 | }
|
---|
977 |
|
---|
978 | int VspKdViewCellsManager::Construct(const ObjectContainer &objects,
|
---|
979 | const VssRayContainer &rays,
|
---|
980 | AxisAlignedBox3 *sceneBbox)
|
---|
981 | {
|
---|
982 | // if view cells already constructed
|
---|
983 | if (ViewCellsConstructed())
|
---|
984 | return 0;
|
---|
985 |
|
---|
986 | mVspKdTree->Construct(rays, sceneBbox);
|
---|
987 | return 0;
|
---|
988 | }
|
---|
989 |
|
---|
990 | bool VspKdViewCellsManager::ViewCellsConstructed() const
|
---|
991 | {
|
---|
992 | return mVspKdTree->GetRoot() != NULL;
|
---|
993 | }
|
---|
994 |
|
---|
995 | int VspKdViewCellsManager::ComputeSampleContributions(Ray &ray, const bool castRay)
|
---|
996 | {
|
---|
997 | // view cells not yet constructed
|
---|
998 | if (!ViewCellsConstructed())
|
---|
999 | return 0;
|
---|
1000 |
|
---|
1001 | //if (castRay)
|
---|
1002 | //mVspKdTree->CastRay(ray);
|
---|
1003 |
|
---|
1004 | int sampleContributions = 0;
|
---|
1005 |
|
---|
1006 | return sampleContributions;
|
---|
1007 | }
|
---|
1008 |
|
---|
1009 | int VspKdViewCellsManager::PostProcess(const ObjectContainer &objects,
|
---|
1010 | const RayContainer &rays)
|
---|
1011 | {
|
---|
1012 | if (!ViewCellsConstructed())
|
---|
1013 | return 0;
|
---|
1014 |
|
---|
1015 | return 0;
|
---|
1016 | }
|
---|
1017 |
|
---|
1018 | void VspKdViewCellsManager::Visualize(const ObjectContainer &objects,
|
---|
1019 | const RayContainer &sampleRays)
|
---|
1020 | {
|
---|
1021 | if (!ViewCellsConstructed())
|
---|
1022 | return;
|
---|
1023 |
|
---|
1024 | if (1)
|
---|
1025 | {
|
---|
1026 | Exporter *exporter = Exporter::GetExporter("vspkdtree.x3d");
|
---|
1027 | //exporter->SetWireframe();
|
---|
1028 | exporter->ExportVspKdTree(*mVspKdTree, mVspKdTree->GetStatistics().maxPvsSize);
|
---|
1029 |
|
---|
1030 | Debug << "average PVS size: " << mVspKdTree->GetAvgPvsSize() << endl;
|
---|
1031 |
|
---|
1032 | if (0)
|
---|
1033 | exporter->ExportGeometry(objects);
|
---|
1034 |
|
---|
1035 | bool exportRays = true;
|
---|
1036 |
|
---|
1037 | if (exportRays)
|
---|
1038 | {
|
---|
1039 | int raysSize = 2000;
|
---|
1040 | float prob = raysSize / (float)sampleRays.size();
|
---|
1041 |
|
---|
1042 | exporter->SetWireframe();
|
---|
1043 |
|
---|
1044 | RayContainer rays;
|
---|
1045 |
|
---|
1046 | for (int i = 0; i < sampleRays.size(); ++ i)
|
---|
1047 | {
|
---|
1048 | if (RandomValue(0,1) < prob)
|
---|
1049 | rays.push_back(sampleRays[i]);
|
---|
1050 | }
|
---|
1051 |
|
---|
1052 | exporter->ExportRays(rays, 1000, RgbColor(1, 0, 0));
|
---|
1053 | }
|
---|
1054 |
|
---|
1055 | delete exporter;
|
---|
1056 | }
|
---|
1057 |
|
---|
1058 | if (1)
|
---|
1059 | {
|
---|
1060 | vector<VspKdTreeLeaf *> leafContainer;
|
---|
1061 |
|
---|
1062 | mVspKdTree->CollectLeaves(leafContainer);
|
---|
1063 |
|
---|
1064 | for (int i = 0; i < 10; ++ i)
|
---|
1065 | {
|
---|
1066 | char s[64];
|
---|
1067 | sprintf(s, "vsp_leaves%04d.x3d", i);
|
---|
1068 | Exporter *exporter = Exporter::GetExporter(s);
|
---|
1069 |
|
---|
1070 | // export geometry
|
---|
1071 | VspKdTreeLeaf *leaf = leafContainer[Random((int)leafContainer.size())];
|
---|
1072 | AxisAlignedBox3 box = mVspKdTree->GetBBox(leaf);
|
---|
1073 |
|
---|
1074 | Material m;
|
---|
1075 | m.mDiffuseColor = RgbColor(0, 1, 1);
|
---|
1076 | exporter->SetForcedMaterial(m);
|
---|
1077 | exporter->SetWireframe();
|
---|
1078 | exporter->ExportBox(box);
|
---|
1079 |
|
---|
1080 | //-- export stored rays
|
---|
1081 | VssRayContainer vssRays;
|
---|
1082 | leaf->GetRays(vssRays);
|
---|
1083 |
|
---|
1084 | VssRayContainer rays;
|
---|
1085 | VssRayContainer::const_iterator it, it_end = vssRays.end();
|
---|
1086 |
|
---|
1087 | for (it = vssRays.begin(); it != it_end; ++ it)
|
---|
1088 | {
|
---|
1089 | //if (!(*it)->mOriginObject && !(*it)->mTerminationObject)
|
---|
1090 | rays.push_back(*it);
|
---|
1091 |
|
---|
1092 | //if (!(*it)->mOriginObject && !(*it)->mTerminationObject)
|
---|
1093 | // Debug << "ERR: " << (*it)->mOrigin << " " << (*it)->mTermination << endl;
|
---|
1094 | }
|
---|
1095 |
|
---|
1096 | exporter->ExportRays(rays, RgbColor(1, 0, 0));
|
---|
1097 |
|
---|
1098 | //-- export stored PVS
|
---|
1099 | ObjectContainer pvsObj;
|
---|
1100 | leaf->ExtractPvs(pvsObj);
|
---|
1101 |
|
---|
1102 | exporter->ExportGeometry(pvsObj);
|
---|
1103 |
|
---|
1104 | delete exporter;
|
---|
1105 | }
|
---|
1106 | }
|
---|
1107 | }
|
---|
1108 |
|
---|
1109 | int VspKdViewCellsManager::GetType() const
|
---|
1110 | {
|
---|
1111 | return VSP_KD;
|
---|
1112 | }
|
---|
1113 |
|
---|
1114 |
|
---|
1115 | /**********************************************************************/
|
---|
1116 | /* VspBspViewCellsManager implementation */
|
---|
1117 | /**********************************************************************/
|
---|
1118 |
|
---|
1119 | VspBspViewCellsManager::VspBspViewCellsManager(VspBspTree *vspBspTree,
|
---|
1120 | int constructionSamples):
|
---|
1121 | ViewCellsManager(constructionSamples),
|
---|
1122 | mVspBspTree(vspBspTree)
|
---|
1123 | {
|
---|
1124 | mRenderSimulator = new VspBspRenderSimulator(vspBspTree);
|
---|
1125 | InitRenderSimulator();
|
---|
1126 | }
|
---|
1127 |
|
---|
1128 | bool VspBspViewCellsManager::ViewCellsConstructed() const
|
---|
1129 | {
|
---|
1130 | return mVspBspTree->GetRoot() != NULL;
|
---|
1131 | }
|
---|
1132 |
|
---|
1133 | ViewCell *VspBspViewCellsManager::GenerateViewCell(Mesh *mesh) const
|
---|
1134 | {
|
---|
1135 | return new BspViewCell(mesh);
|
---|
1136 | }
|
---|
1137 |
|
---|
1138 | int VspBspViewCellsManager::Construct(const ObjectContainer &objects,
|
---|
1139 | const VssRayContainer &rays,
|
---|
1140 | AxisAlignedBox3 *sceneBbox)
|
---|
1141 | {
|
---|
1142 | // if view cells were already constructed
|
---|
1143 | if (ViewCellsConstructed())
|
---|
1144 | return 0;
|
---|
1145 |
|
---|
1146 | Debug << "Constructing bsp view cells" << endl;
|
---|
1147 |
|
---|
1148 | int sampleContributions = 0;
|
---|
1149 |
|
---|
1150 | VssRayContainer sampleRays;
|
---|
1151 |
|
---|
1152 | int limit = min (mConstructionSamples, (int)rays.size());
|
---|
1153 |
|
---|
1154 | for (int i = 0; i < limit; ++ i)
|
---|
1155 | sampleRays.push_back(rays[i]);
|
---|
1156 |
|
---|
1157 | mVspBspTree->Construct(sampleRays);
|
---|
1158 |
|
---|
1159 | Debug << mVspBspTree->GetStatistics() << endl;
|
---|
1160 |
|
---|
1161 | return sampleContributions;
|
---|
1162 | }
|
---|
1163 |
|
---|
1164 | int VspBspViewCellsManager::ComputeSampleContributions(Ray &ray, const bool castRay)
|
---|
1165 | {
|
---|
1166 | // view cells not yet constructed
|
---|
1167 | if (!ViewCellsConstructed())
|
---|
1168 | return 0;
|
---|
1169 |
|
---|
1170 | int contributingSamples = 0;
|
---|
1171 |
|
---|
1172 | if (castRay)
|
---|
1173 | mVspBspTree->CastRay(ray);
|
---|
1174 |
|
---|
1175 | Intersectable *tObject =
|
---|
1176 | !ray.intersections.empty() ? ray.intersections[0].mObject : NULL;
|
---|
1177 |
|
---|
1178 | Intersectable *sObject = ray.sourceObject.mObject;
|
---|
1179 |
|
---|
1180 | if (sObject || tObject)
|
---|
1181 | {
|
---|
1182 | // object can be seen from the view cell => add to view cell pvs
|
---|
1183 | for (int j = 0; j < (int)ray.bspIntersections.size(); ++ j)
|
---|
1184 | {
|
---|
1185 | BspLeaf *leaf = ray.bspIntersections[j].mLeaf;
|
---|
1186 |
|
---|
1187 | // if ray not in unbounded space
|
---|
1188 | if (leaf->GetViewCell() != mVspBspTree->GetRootCell())
|
---|
1189 | {
|
---|
1190 | if (sObject)
|
---|
1191 | {
|
---|
1192 | contributingSamples +=
|
---|
1193 | leaf->GetViewCell()->GetPvs().AddSample(sObject);
|
---|
1194 | }
|
---|
1195 |
|
---|
1196 | if (tObject)
|
---|
1197 | {
|
---|
1198 | contributingSamples +=
|
---|
1199 | leaf->GetViewCell()->GetPvs().AddSample(tObject);
|
---|
1200 | }
|
---|
1201 | }
|
---|
1202 | }
|
---|
1203 | }
|
---|
1204 |
|
---|
1205 | // rays passing through this viewcell
|
---|
1206 | if (0)
|
---|
1207 | for (int j = 1; j < ((int)ray.bspIntersections.size() - 1); ++ j)
|
---|
1208 | {
|
---|
1209 | BspLeaf *leaf = ray.bspIntersections[j].mLeaf;
|
---|
1210 |
|
---|
1211 | if (leaf->GetViewCell() != mVspBspTree->GetRootCell())
|
---|
1212 | leaf->GetViewCell()->
|
---|
1213 | AddPassingRay(ray, contributingSamples ? 1 : 0);
|
---|
1214 | }
|
---|
1215 |
|
---|
1216 | return contributingSamples;
|
---|
1217 | }
|
---|
1218 |
|
---|
1219 | int VspBspViewCellsManager::PostProcess(const ObjectContainer &objects,
|
---|
1220 | const RayContainer &rays)
|
---|
1221 | {
|
---|
1222 | if (!ViewCellsConstructed())
|
---|
1223 | {
|
---|
1224 | Debug << "view cells not constructed" << endl;
|
---|
1225 | return 0;
|
---|
1226 | }
|
---|
1227 |
|
---|
1228 |
|
---|
1229 | //-- post processing of bsp view cells
|
---|
1230 | int vcSize = 0;
|
---|
1231 | int pvsSize = 0;
|
---|
1232 |
|
---|
1233 | BspViewCellsStatistics vcStats;
|
---|
1234 | mVspBspTree->EvaluateViewCellsStats(vcStats);
|
---|
1235 | Debug << "original view cell partition:\n" << vcStats << endl;
|
---|
1236 |
|
---|
1237 | if (1) // export view cells
|
---|
1238 | {
|
---|
1239 | cout << "exporting initial view cells (=leaves) ... ";
|
---|
1240 | Exporter *exporter = Exporter::GetExporter("view_cells.x3d");
|
---|
1241 |
|
---|
1242 | if (exporter)
|
---|
1243 | {
|
---|
1244 | exporter->SetWireframe();
|
---|
1245 | exporter->ExportBspViewCellPartition(*mVspBspTree, vcStats.maxPvs);
|
---|
1246 |
|
---|
1247 | if (0)
|
---|
1248 | {
|
---|
1249 | Material m;
|
---|
1250 | m.mDiffuseColor = RgbColor(0, 1, 0);
|
---|
1251 | exporter->SetForcedMaterial(m);
|
---|
1252 | exporter->SetWireframe();
|
---|
1253 |
|
---|
1254 | exporter->ExportGeometry(objects);
|
---|
1255 | }
|
---|
1256 |
|
---|
1257 | delete exporter;
|
---|
1258 | }
|
---|
1259 | cout << "finished" << endl;
|
---|
1260 | }
|
---|
1261 |
|
---|
1262 | cout << "starting post processing using " << mPostProcessSamples << " samples ... ";
|
---|
1263 |
|
---|
1264 | long startTime = GetTime();
|
---|
1265 |
|
---|
1266 |
|
---|
1267 | //-- merge or subdivide view cells
|
---|
1268 | int merged = 0;
|
---|
1269 |
|
---|
1270 | RayContainer::const_iterator rit, rit_end = rays.end();
|
---|
1271 | vector<Ray::BspIntersection>::const_iterator iit;
|
---|
1272 |
|
---|
1273 | int limit = min((int)rays.size(), mPostProcessSamples);
|
---|
1274 |
|
---|
1275 | for (int i = 0; i < limit; ++ i)
|
---|
1276 | {
|
---|
1277 | Ray *ray = rays[i];
|
---|
1278 |
|
---|
1279 | // traverse leaves stored in the rays and compare and merge consecutive
|
---|
1280 | // leaves (i.e., the neighbors in the tree)
|
---|
1281 | if (ray->bspIntersections.size() < 2)
|
---|
1282 | continue;
|
---|
1283 |
|
---|
1284 | iit = ray->bspIntersections.begin();
|
---|
1285 |
|
---|
1286 | BspLeaf *previousLeaf = (*iit).mLeaf;
|
---|
1287 | ++ iit;
|
---|
1288 |
|
---|
1289 | for (; iit != ray->bspIntersections.end(); ++ iit)
|
---|
1290 | {
|
---|
1291 | BspLeaf *leaf = (*iit).mLeaf;
|
---|
1292 |
|
---|
1293 | if (ShouldMerge(leaf, previousLeaf))
|
---|
1294 | {
|
---|
1295 | MergeVspBspLeafViewCells(leaf, previousLeaf);
|
---|
1296 |
|
---|
1297 | ++ merged;
|
---|
1298 | }
|
---|
1299 |
|
---|
1300 | previousLeaf = leaf;
|
---|
1301 | }
|
---|
1302 | }
|
---|
1303 |
|
---|
1304 | //-- stats and visualizations
|
---|
1305 | cout << "finished" << endl;
|
---|
1306 | cout << "merged " << merged << " view cells in "
|
---|
1307 | << TimeDiff(startTime, GetTime()) *1e-3 << " secs" << endl;
|
---|
1308 |
|
---|
1309 | // statistics after post process
|
---|
1310 | vcStats.Reset();
|
---|
1311 | mVspBspTree->EvaluateViewCellsStats(vcStats);
|
---|
1312 | Debug << "post processed view cell partition:\n" << vcStats << endl;
|
---|
1313 |
|
---|
1314 | return merged;
|
---|
1315 | }
|
---|
1316 |
|
---|
1317 | int VspBspViewCellsManager::GetType() const
|
---|
1318 | {
|
---|
1319 | return VSP_BSP;
|
---|
1320 | }
|
---|
1321 |
|
---|
1322 |
|
---|
1323 | void VspBspViewCellsManager::Visualize(const ObjectContainer &objects,
|
---|
1324 | const RayContainer &sampleRays)
|
---|
1325 | {
|
---|
1326 | if (!ViewCellsConstructed())
|
---|
1327 | return;
|
---|
1328 |
|
---|
1329 | //-- recount pvs
|
---|
1330 | BspViewCellsStatistics vcStats;
|
---|
1331 | mVspBspTree->EvaluateViewCellsStats(vcStats);
|
---|
1332 |
|
---|
1333 | if (1) // export view cells
|
---|
1334 | {
|
---|
1335 | cout << "exporting view cells after merge ... ";
|
---|
1336 | Exporter *exporter = Exporter::GetExporter("merged_view_cells.x3d");
|
---|
1337 |
|
---|
1338 | if (exporter)
|
---|
1339 | {
|
---|
1340 | exporter->ExportBspViewCellPartition(*mVspBspTree, vcStats.maxPvs);
|
---|
1341 | delete exporter;
|
---|
1342 | }
|
---|
1343 |
|
---|
1344 | cout << "finished" << endl;
|
---|
1345 | }
|
---|
1346 |
|
---|
1347 | //-- visualization of the BSP splits
|
---|
1348 | bool exportSplits = false;
|
---|
1349 | environment->GetBoolValue("BspTree.Visualization.exportSplits", exportSplits);
|
---|
1350 |
|
---|
1351 | if (exportSplits)
|
---|
1352 | {
|
---|
1353 | cout << "exporting splits ... ";
|
---|
1354 | ExportSplits(objects, sampleRays);
|
---|
1355 | cout << "finished" << endl;
|
---|
1356 | }
|
---|
1357 |
|
---|
1358 | ExportBspPvs(objects, sampleRays);
|
---|
1359 | }
|
---|
1360 |
|
---|
1361 |
|
---|
1362 | void VspBspViewCellsManager::ExportSplits(const ObjectContainer &objects,
|
---|
1363 | const RayContainer &sampleRays)
|
---|
1364 | {
|
---|
1365 | Exporter *exporter = Exporter::GetExporter("bsp_splits.x3d");
|
---|
1366 |
|
---|
1367 | if (exporter)
|
---|
1368 | {
|
---|
1369 | Material m;
|
---|
1370 | m.mDiffuseColor = RgbColor(1, 0, 0);
|
---|
1371 | exporter->SetForcedMaterial(m);
|
---|
1372 | exporter->SetWireframe();
|
---|
1373 |
|
---|
1374 | exporter->ExportBspSplits(*mVspBspTree, true);
|
---|
1375 |
|
---|
1376 | // take forced material, else big scenes cannot be viewed
|
---|
1377 | m.mDiffuseColor = RgbColor(0, 1, 0);
|
---|
1378 | exporter->SetForcedMaterial(m);
|
---|
1379 | exporter->SetFilled();
|
---|
1380 |
|
---|
1381 | exporter->ResetForcedMaterial();
|
---|
1382 |
|
---|
1383 | // export rays
|
---|
1384 | if (0)
|
---|
1385 | {
|
---|
1386 | RayContainer outRays;
|
---|
1387 |
|
---|
1388 | int raysSize = min((int)sampleRays.size(), mVisualizationSamples);
|
---|
1389 |
|
---|
1390 | for (int i = 0; i < raysSize; ++ i)
|
---|
1391 | {
|
---|
1392 | // only rays piercing geometry
|
---|
1393 | if (!sampleRays[i]->intersections.empty())
|
---|
1394 | outRays.push_back(sampleRays[i]);
|
---|
1395 | }
|
---|
1396 |
|
---|
1397 | // export rays
|
---|
1398 | exporter->ExportRays(outRays, 1000, RgbColor(1, 1, 0));
|
---|
1399 | }
|
---|
1400 |
|
---|
1401 | if (0)
|
---|
1402 | exporter->ExportGeometry(objects);
|
---|
1403 |
|
---|
1404 | delete exporter;
|
---|
1405 | }
|
---|
1406 | }
|
---|
1407 |
|
---|
1408 | void VspBspViewCellsManager::ExportBspPvs(const ObjectContainer &objects,
|
---|
1409 | const RayContainer &sampleRays)
|
---|
1410 | {
|
---|
1411 | const int leafOut = 10;
|
---|
1412 |
|
---|
1413 | ViewCell::NewMail();
|
---|
1414 |
|
---|
1415 | //-- some rays for output
|
---|
1416 | const int raysOut = min((int)sampleRays.size(), mVisualizationSamples);
|
---|
1417 | cout << "visualization using " << mVisualizationSamples << " samples" << endl;
|
---|
1418 |
|
---|
1419 | if (1)
|
---|
1420 | {
|
---|
1421 | //-- some random view cells and rays for output
|
---|
1422 | vector<BspLeaf *> vspBspLeaves;
|
---|
1423 |
|
---|
1424 | for (int i = 0; i < leafOut; ++ i)
|
---|
1425 | vspBspLeaves.push_back(mVspBspTree->GetRandomLeaf());
|
---|
1426 |
|
---|
1427 | for (int i = 0; i < (int)vspBspLeaves.size(); ++ i)
|
---|
1428 | {
|
---|
1429 | RayContainer vcRays;
|
---|
1430 | cout << "creating output for view cell " << i << " ... ";
|
---|
1431 | // check whether we can add the current ray to the output rays
|
---|
1432 | /*for (int k = 0; k < raysOut; ++ k)
|
---|
1433 | {
|
---|
1434 | Ray *ray = sampleRays[k];
|
---|
1435 |
|
---|
1436 | for (int j = 0; j < (int)ray->bspIntersections.size(); ++ j)
|
---|
1437 | {
|
---|
1438 | BspLeaf *leaf = ray->bspIntersections[j].mLeaf;
|
---|
1439 |
|
---|
1440 | if (vspBspLeaves[i]->GetViewCell() == leaf->GetViewCell())
|
---|
1441 | {
|
---|
1442 | vcRays.push_back(ray);
|
---|
1443 | }
|
---|
1444 | }
|
---|
1445 | }
|
---|
1446 | */
|
---|
1447 |
|
---|
1448 | Intersectable::NewMail();
|
---|
1449 |
|
---|
1450 | BspViewCell *vc = dynamic_cast<BspViewCell *>
|
---|
1451 | (vspBspLeaves[i]->GetViewCell());
|
---|
1452 |
|
---|
1453 | //bspLeaves[j]->Mail();
|
---|
1454 | char s[64]; sprintf(s, "bsp-pvs%04d.x3d", i);
|
---|
1455 |
|
---|
1456 | Exporter *exporter = Exporter::GetExporter(s);
|
---|
1457 | exporter->SetFilled();
|
---|
1458 |
|
---|
1459 | ViewCellPvsMap::iterator it = vc->GetPvs().mEntries.begin();
|
---|
1460 |
|
---|
1461 | exporter->SetWireframe();
|
---|
1462 | //exporter->SetFilled();
|
---|
1463 |
|
---|
1464 | Material m;//= RandomMaterial();
|
---|
1465 | m.mDiffuseColor = RgbColor(0, 1, 0);
|
---|
1466 | exporter->SetForcedMaterial(m);
|
---|
1467 |
|
---|
1468 | if (vc->GetMesh())
|
---|
1469 | exporter->ExportViewCell(vc);
|
---|
1470 | else
|
---|
1471 | {
|
---|
1472 | PolygonContainer vcGeom;
|
---|
1473 |
|
---|
1474 | // export view cell geometry
|
---|
1475 | mVspBspTree->ConstructGeometry(vc, vcGeom);
|
---|
1476 | exporter->ExportPolygons(vcGeom);
|
---|
1477 | CLEAR_CONTAINER(vcGeom);
|
---|
1478 | }
|
---|
1479 |
|
---|
1480 | Debug << i << ": pvs size=" << (int)vc->GetPvs().GetSize()
|
---|
1481 | << ", piercing rays=" << (int)vcRays.size() << endl;
|
---|
1482 |
|
---|
1483 | // export rays piercing this view cell
|
---|
1484 | exporter->ExportRays(vcRays, 1000, RgbColor(1, 0, 0));
|
---|
1485 | exporter->ExportRays(vspBspLeaves[i]->mVssRays, RgbColor(1, 1, 1));
|
---|
1486 |
|
---|
1487 | m.mDiffuseColor = RgbColor(0, 1, 1);
|
---|
1488 | exporter->SetForcedMaterial(m);
|
---|
1489 |
|
---|
1490 | exporter->SetWireframe();
|
---|
1491 | //exporter->SetFilled();
|
---|
1492 |
|
---|
1493 | // output PVS of view cell
|
---|
1494 | for (; it != vc->GetPvs().mEntries.end(); ++ it)
|
---|
1495 | {
|
---|
1496 | Intersectable *intersect = (*it).first;
|
---|
1497 | if (!intersect->Mailed())
|
---|
1498 | {
|
---|
1499 | exporter->ExportIntersectable(intersect);
|
---|
1500 | intersect->Mail();
|
---|
1501 | }
|
---|
1502 | }
|
---|
1503 |
|
---|
1504 | // output rest of the objects
|
---|
1505 | if (0)
|
---|
1506 | {
|
---|
1507 | Material m;//= RandomMaterial();
|
---|
1508 | m.mDiffuseColor = RgbColor(0, 0, 1);
|
---|
1509 | exporter->SetForcedMaterial(m);
|
---|
1510 |
|
---|
1511 | for (int j = 0; j < objects.size(); ++ j)
|
---|
1512 | if (!objects[j]->Mailed())
|
---|
1513 | {
|
---|
1514 | exporter->SetForcedMaterial(m);
|
---|
1515 | exporter->ExportIntersectable(objects[j]);
|
---|
1516 | objects[j]->Mail();
|
---|
1517 | }
|
---|
1518 | }
|
---|
1519 | DEL_PTR(exporter);
|
---|
1520 | cout << "finished" << endl;
|
---|
1521 | }
|
---|
1522 | }
|
---|
1523 | else
|
---|
1524 | {
|
---|
1525 | ViewCellContainer viewCells;
|
---|
1526 |
|
---|
1527 | mVspBspTree->CollectViewCells(viewCells);
|
---|
1528 | stable_sort(viewCells.begin(), viewCells.end(), vc_gt);
|
---|
1529 |
|
---|
1530 | int limit = min(leafOut, (int)viewCells.size());
|
---|
1531 |
|
---|
1532 | for (int i = 0; i < limit; ++ i)
|
---|
1533 | {
|
---|
1534 | cout << "creating output for view cell " << i << " ... ";
|
---|
1535 | RayContainer vcRays;
|
---|
1536 | Intersectable::NewMail();
|
---|
1537 | BspViewCell *vc = dynamic_cast<BspViewCell *>(viewCells[i]);
|
---|
1538 |
|
---|
1539 | cout << "creating output for view cell " << i << " ... ";
|
---|
1540 | // check whether we can add the current ray to the output rays
|
---|
1541 | for (int k = 0; k < raysOut; ++ k)
|
---|
1542 | {
|
---|
1543 | Ray *ray = sampleRays[k];
|
---|
1544 |
|
---|
1545 | for (int j = 0; j < (int)ray->bspIntersections.size(); ++ j)
|
---|
1546 | {
|
---|
1547 | BspLeaf *leaf = ray->bspIntersections[j].mLeaf;
|
---|
1548 |
|
---|
1549 | if (vc == leaf->GetViewCell())
|
---|
1550 | {
|
---|
1551 | vcRays.push_back(ray);
|
---|
1552 | }
|
---|
1553 | }
|
---|
1554 | }
|
---|
1555 |
|
---|
1556 | //bspLeaves[j]->Mail();
|
---|
1557 | char s[64]; sprintf(s, "bsp-pvs%04d.x3d", i);
|
---|
1558 |
|
---|
1559 | Exporter *exporter = Exporter::GetExporter(s);
|
---|
1560 |
|
---|
1561 | exporter->SetWireframe();
|
---|
1562 |
|
---|
1563 | Material m;//= RandomMaterial();
|
---|
1564 | m.mDiffuseColor = RgbColor(0, 1, 0);
|
---|
1565 | exporter->SetForcedMaterial(m);
|
---|
1566 |
|
---|
1567 | if (vc->GetMesh())
|
---|
1568 | exporter->ExportViewCell(vc);
|
---|
1569 | else
|
---|
1570 | {
|
---|
1571 | PolygonContainer vcGeom;
|
---|
1572 | // export view cell
|
---|
1573 | mVspBspTree->ConstructGeometry(vc, vcGeom);
|
---|
1574 | exporter->ExportPolygons(vcGeom);
|
---|
1575 | CLEAR_CONTAINER(vcGeom);
|
---|
1576 | }
|
---|
1577 |
|
---|
1578 |
|
---|
1579 | Debug << i << ": pvs size=" << (int)vc->GetPvs().GetSize()
|
---|
1580 | << ", piercing rays=" << (int)vcRays.size() << endl;
|
---|
1581 |
|
---|
1582 |
|
---|
1583 | // export rays piercing this view cell
|
---|
1584 | exporter->ExportRays(vcRays, 1000, RgbColor(0, 1, 0));
|
---|
1585 |
|
---|
1586 | m.mDiffuseColor = RgbColor(1, 0, 0);
|
---|
1587 | exporter->SetForcedMaterial(m);
|
---|
1588 |
|
---|
1589 | ViewCellPvsMap::const_iterator it,
|
---|
1590 | it_end = vc->GetPvs().mEntries.end();
|
---|
1591 |
|
---|
1592 | // output PVS of view cell
|
---|
1593 | for (it = vc->GetPvs().mEntries.begin(); it != it_end; ++ it)
|
---|
1594 | {
|
---|
1595 | Intersectable *intersect = (*it).first;
|
---|
1596 |
|
---|
1597 | if (!intersect->Mailed())
|
---|
1598 | {
|
---|
1599 | Material m = RandomMaterial();
|
---|
1600 |
|
---|
1601 | exporter->SetForcedMaterial(m);
|
---|
1602 |
|
---|
1603 | exporter->ExportIntersectable(intersect);
|
---|
1604 | intersect->Mail();
|
---|
1605 | }
|
---|
1606 | }
|
---|
1607 |
|
---|
1608 | DEL_PTR(exporter);
|
---|
1609 | cout << "finished" << endl;
|
---|
1610 | }
|
---|
1611 | }
|
---|
1612 | }
|
---|
1613 |
|
---|
1614 |
|
---|
1615 | bool VspBspViewCellsManager::MergeVspBspLeafViewCells(BspLeaf *front, |
---|
1616 | BspLeaf *back) const |
---|
1617 | { |
---|
1618 | BspViewCell *viewCell = |
---|
1619 | dynamic_cast<BspViewCell *>(MergeViewCells(*front->GetViewCell(), |
---|
1620 | *back->GetViewCell())); |
---|
1621 | |
---|
1622 | if (!viewCell) |
---|
1623 | return false; |
---|
1624 | |
---|
1625 | // change view cells of all leaves associated with the |
---|
1626 | // previous view cells |
---|
1627 | |
---|
1628 | BspViewCell *fVc = front->GetViewCell(); |
---|
1629 | BspViewCell *bVc = back->GetViewCell(); |
---|
1630 | |
---|
1631 | vector<BspLeaf *> fLeaves = fVc->mBspLeaves; |
---|
1632 | vector<BspLeaf *> bLeaves = bVc->mBspLeaves; |
---|
1633 | |
---|
1634 | vector<BspLeaf *>::const_iterator it; |
---|
1635 | |
---|
1636 | for (it = fLeaves.begin(); it != fLeaves.end(); ++ it) |
---|
1637 | { |
---|
1638 | (*it)->SetViewCell(viewCell); |
---|
1639 | viewCell->mBspLeaves.push_back(*it); |
---|
1640 | } |
---|
1641 | for (it = bLeaves.begin(); it != bLeaves.end(); ++ it) |
---|
1642 | { |
---|
1643 | (*it)->SetViewCell(viewCell); |
---|
1644 | viewCell->mBspLeaves.push_back(*it); |
---|
1645 | } |
---|
1646 | |
---|
1647 | DEL_PTR(fVc); |
---|
1648 | DEL_PTR(bVc); |
---|
1649 | |
---|
1650 | return true; |
---|
1651 | } |
---|
1652 | |
---|
1653 | bool VspBspViewCellsManager::ShouldMerge(BspLeaf *front, BspLeaf *back) const |
---|
1654 | { |
---|
1655 | ViewCell *fvc = front->GetViewCell(); |
---|
1656 | ViewCell *bvc = back->GetViewCell(); |
---|
1657 | |
---|
1658 | if ((fvc == mVspBspTree->GetRootCell()) || |
---|
1659 | (bvc == mVspBspTree->GetRootCell()) || |
---|
1660 | (fvc == bvc)) |
---|
1661 | return false; |
---|
1662 | |
---|
1663 | int fdiff = fvc->GetPvs().Diff(bvc->GetPvs()); |
---|
1664 | |
---|
1665 | if (fvc->GetPvs().GetSize() + fdiff < mMaxPvs) |
---|
1666 | { |
---|
1667 | if ((fvc->GetPvs().GetSize() < mMinPvs) || |
---|
1668 | (bvc->GetPvs().GetSize() < mMinPvs) || |
---|
1669 | ((fdiff < mMinPvsDif) && (bvc->GetPvs().Diff(fvc->GetPvs()) < mMinPvsDif))) |
---|
1670 | { |
---|
1671 | return true; |
---|
1672 | } |
---|
1673 | } |
---|
1674 | |
---|
1675 | return false; |
---|
1676 | } |
---|
1677 | |
---|