1 | #include "ViewCell.h"
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2 | #include "Mesh.h"
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3 | #include "Intersectable.h"
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4 | #include "MeshKdTree.h"
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5 | #include "Triangle3.h"
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6 | #include "common.h"
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7 | #include "Environment.h"
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8 | #include "ViewCellsManager.h"
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9 | #include "Exporter.h"
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10 |
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11 | #include <time.h>
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12 | #include <iomanip>
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13 | #include <stack>
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14 |
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15 |
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16 |
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17 | template <typename T> class myless
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18 | {
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19 | public:
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20 | |
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21 | //bool operator() (HierarchyNode *v1, HierarchyNode *v2) const
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22 | bool operator() (T v1, T v2) const
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23 | {
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24 | return (v1->GetTimeStamp() < v2->GetTimeStamp());
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25 | }
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26 | };
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27 |
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28 |
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29 | typedef priority_queue<ViewCell *, vector<ViewCell *>, myless<vector<ViewCell *>::value_type> > TraversalQueue;
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30 |
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31 | int ViewCell::sMailId = 21843194198;
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32 | int ViewCell::sReservedMailboxes = 1;
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33 |
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34 | //int upperPvsLimit = 120;
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35 | //int lowerPvsLimit = 5;
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36 |
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37 | float MergeCandidate::sRenderCostWeight = 0;
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38 |
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39 |
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40 | // pvs penalty can be different from pvs size
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41 | inline float EvalPvsPenalty(const int pvs,
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42 | const int lower,
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43 | const int upper)
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44 | {
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45 | // clamp to minmax values
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46 | if (pvs < lower)
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47 | return (float)lower;
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48 | if (pvs > upper)
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49 | return (float)upper;
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50 |
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51 | return (float)pvs;
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52 | }
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53 |
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54 |
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55 | int ComputeMergedPvsSize(const ObjectPvs &pvs1, const ObjectPvs &pvs2)
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56 | {
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57 | int pvs = pvs1.GetSize();
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58 |
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59 | // compute new pvs size
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60 | ObjectPvsMap::const_iterator it, it_end = pvs1.mEntries.end();
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61 |
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62 | Intersectable::NewMail();
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63 |
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64 | for (it = pvs1.mEntries.begin(); it != it_end; ++ it)
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65 | {
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66 | (*it).first->Mail();
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67 | }
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68 |
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69 | it_end = pvs2.mEntries.end();
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70 |
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71 | for (it = pvs2.mEntries.begin(); it != it_end; ++ it)
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72 | {
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73 | Intersectable *obj = (*it).first;
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74 | if (!obj->Mailed())
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75 | ++ pvs;
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76 | }
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77 |
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78 | return pvs;
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79 | }
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80 |
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81 |
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82 | ViewCell::ViewCell():
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83 | MeshInstance(NULL),
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84 | mPiercingRays(0),
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85 | mArea(-1),
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86 | mVolume(-1),
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87 | mValid(true),
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88 | mParent(NULL),
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89 | mTimeStamp(0)
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90 | {
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91 | }
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92 |
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93 | ViewCell::ViewCell(Mesh *mesh):
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94 | MeshInstance(mesh),
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95 | mPiercingRays(0),
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96 | mArea(-1),
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97 | mVolume(-1),
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98 | mValid(true),
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99 | mParent(NULL),
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100 | mTimeStamp(0)
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101 | {
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102 | }
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103 |
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104 |
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105 | const ObjectPvs &ViewCell::GetPvs() const
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106 | {
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107 | return mPvs;
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108 | }
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109 |
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110 | ObjectPvs &ViewCell::GetPvs()
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111 | {
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112 | return mPvs;
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113 | }
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114 |
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115 |
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116 | int ViewCell::Type() const
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117 | {
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118 | return VIEW_CELL;
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119 | }
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120 |
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121 |
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122 | float ViewCell::GetVolume() const
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123 | {
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124 | return mVolume;
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125 | }
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126 |
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127 |
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128 | void ViewCell::SetVolume(float volume)
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129 | {
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130 | mVolume = volume;
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131 | }
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132 |
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133 |
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134 | void ViewCell::SetMesh(Mesh *mesh)
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135 | {
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136 | mMesh = mesh;
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137 | }
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138 |
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139 |
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140 | void ViewCell::UpdateViewCellsStats(ViewCellsStatistics &vcStat)
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141 | {
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142 | ++ vcStat.viewCells;
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143 |
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144 | const int pvsSize = mPvs.GetSize();
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145 |
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146 | vcStat.pvs += pvsSize;
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147 |
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148 | if (pvsSize == 0)
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149 | ++ vcStat.emptyPvs;
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150 |
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151 | if (pvsSize > vcStat.maxPvs)
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152 | vcStat.maxPvs = pvsSize;
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153 |
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154 | if (pvsSize < vcStat.minPvs)
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155 | vcStat.minPvs = pvsSize;
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156 |
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157 | if (!mValid)
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158 | ++ vcStat.invalid;
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159 | }
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160 |
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161 |
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162 | float ViewCell::GetArea() const
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163 | {
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164 | return mArea;
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165 | }
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166 |
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167 |
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168 | void ViewCell::SetArea(float area)
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169 | {
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170 | mArea = area;
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171 | }
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172 |
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173 |
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174 | void ViewCell::SetValid(const bool valid)
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175 | {
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176 | mValid = valid;
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177 | }
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178 |
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179 |
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180 | bool ViewCell::GetValid() const
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181 | {
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182 | return mValid;
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183 | }
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184 |
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185 |
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186 | /*bool ViewCell::IsLeaf() const
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187 | {
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188 | return true;
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189 | }*/
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190 |
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191 |
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192 | void ViewCell::SetParent(ViewCellInterior *parent)
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193 | {
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194 | mParent = parent;
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195 | }
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196 |
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197 |
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198 | bool ViewCell::IsRoot() const
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199 | {
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200 | return !mParent;
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201 | }
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202 |
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203 |
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204 | ViewCellInterior *ViewCell::GetParent() const
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205 | {
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206 | return mParent;
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207 | }
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208 |
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209 |
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210 | void ViewCell::SetTimeStamp(const int timeStamp)
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211 | {
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212 | mTimeStamp = timeStamp;
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213 | }
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214 |
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215 |
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216 | int ViewCell::GetTimeStamp() const
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217 | {
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218 | return mTimeStamp;
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219 | }
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220 |
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221 |
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222 |
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223 | /************************************************************************/
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224 | /* class ViewCellInterior implementation */
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225 | /************************************************************************/
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226 |
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227 |
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228 | ViewCellInterior::ViewCellInterior()
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229 | {
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230 | }
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231 |
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232 |
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233 | ViewCellInterior::~ViewCellInterior()
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234 | {
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235 | ViewCellContainer::const_iterator it, it_end = mChildren.end();
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236 |
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237 | for (it = mChildren.begin(); it != it_end; ++ it)
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238 | delete (*it);
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239 | }
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240 |
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241 |
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242 | ViewCellInterior::ViewCellInterior(Mesh *mesh):
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243 | ViewCell(mesh)
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244 | {
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245 | }
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246 |
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247 |
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248 | bool ViewCellInterior::IsLeaf() const
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249 | {
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250 | return false;
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251 | }
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252 |
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253 |
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254 | void ViewCellInterior::SetupChildLink(ViewCell *l)
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255 | {
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256 | mChildren.push_back(l);
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257 | l->mParent = this;
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258 | }
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259 |
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260 |
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261 |
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262 | /************************************************************************/
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263 | /* class ViewCellsStatistics implementation */
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264 | /************************************************************************/
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265 |
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266 |
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267 |
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268 |
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269 | void ViewCellsStatistics::Print(ostream &app) const
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270 | {
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271 | app << "=========== View Cells Statistics ===============\n";
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272 |
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273 | app << setprecision(4);
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274 |
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275 | //app << "#N_CTIME ( Construction time [s] )\n" << Time() << " \n";
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276 |
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277 | app << "#N_OVERALLPVS ( objects in PVS )\n" << pvs << endl;
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278 |
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279 | app << "#N_PMAXPVS ( largest PVS )\n" << maxPvs << endl;
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280 |
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281 | app << "#N_PMINPVS ( smallest PVS )\n" << minPvs << endl;
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282 |
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283 | app << "#N_PAVGPVS ( average PVS )\n" << AvgPvs() << endl;
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284 |
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285 | app << "#N_PEMPTYPVS ( view cells with empty PVS )\n" << emptyPvs << endl;
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286 |
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287 | app << "#N_VIEWCELLS ( number of view cells)\n" << viewCells << endl;
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288 |
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289 | app << "#N_AVGLEAVES (average number of leaves per view cell )\n" << AvgLeaves() << endl;
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290 |
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291 | app << "#N_MAXLEAVES ( maximal number of leaves per view cell )\n" << maxLeaves << endl;
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292 |
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293 | app << "#N_INVALID ( number of invalid view cells )\n" << invalid << endl;
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294 |
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295 | app << "========== End of View Cells Statistics ==========\n";
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296 | }
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297 |
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298 |
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299 | /*************************************************************************/
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300 | /* class ViewCellsTree implementation */
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301 | /*************************************************************************/
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302 |
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303 |
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304 | ViewCellsTree::ViewCellsTree(ViewCellsManager *vcm):
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305 | mRoot(NULL),
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306 | mUseAreaForPvs(false),
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307 | mViewCellsManager(vcm)
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308 | {
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309 | environment->GetBoolValue("ViewCells.Visualization.exportMergedViewCells", mExportMergedViewCells);
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310 |
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311 | //-- merge options
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312 | environment->GetFloatValue("ViewCells.PostProcess.renderCostWeight", mRenderCostWeight);
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313 | environment->GetIntValue("ViewCells.PostProcess.minViewCells", mMergeMinViewCells);
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314 | environment->GetFloatValue("ViewCells.PostProcess.maxCostRatio", mMergeMaxCostRatio);
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315 |
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316 | MergeCandidate::sRenderCostWeight = mRenderCostWeight;
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317 |
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318 | mStats.open("mergeStats.log");
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319 | }
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320 |
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321 |
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322 | int ViewCellsTree::GetSize(ViewCell *vc) const
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323 | {
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324 | int vcSize = 0;
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325 |
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326 | stack<ViewCell *> tstack;
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327 |
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328 | tstack.push(vc);
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329 |
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330 | while (!tstack.empty())
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331 | {
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332 | ViewCell *vc = tstack.top();
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333 | tstack.pop();
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334 |
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335 | if (vc->IsLeaf())
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336 | {
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337 | ++ vcSize;
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338 | }
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339 | else
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340 | {
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341 | ViewCellInterior *interior = dynamic_cast<ViewCellInterior *>(vc);
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342 | ViewCellContainer::const_iterator it, it_end = interior->mChildren.end();
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343 | for (it = interior->mChildren.begin(); it != it_end; ++ it)
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344 | tstack.push(*it);
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345 |
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346 | }
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347 | }
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348 |
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349 | return vcSize;
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350 | }
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351 |
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352 |
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353 | void ViewCellsTree::CollectLeaves(ViewCell *vc, ViewCellContainer &leaves) const
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354 | {
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355 | stack<ViewCell *> tstack;
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356 |
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357 | tstack.push(vc);
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358 |
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359 | while (!tstack.empty())
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360 | {
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361 | ViewCell *vc = tstack.top();
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362 | tstack.pop();
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363 |
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364 | if (vc->IsLeaf())
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365 | {
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366 | leaves.push_back(vc);
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367 | }
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368 | else
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369 | {
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370 | ViewCellInterior *interior = dynamic_cast<ViewCellInterior *>(vc);
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371 | ViewCellContainer::const_iterator it, it_end = interior->mChildren.end();
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372 | for (it = interior->mChildren.begin(); it != it_end; ++ it)
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373 | tstack.push(*it);
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374 |
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375 | }
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376 | }
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377 | }
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378 |
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379 |
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380 | ViewCellsTree::~ViewCellsTree()
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381 | {
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382 | DEL_PTR(mRoot);
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383 | }
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384 |
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385 |
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386 | int ViewCellsTree::ConstructMergeTree(const VssRayContainer &rays,
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387 | const ObjectContainer &objects)
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388 | {
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389 | // number of view cells equals the number of leaves
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390 | // (without the invalid ones )
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391 | //mNumViewCells = mBspStats.Leaves();//- mBspStats.invalidLeaves;
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392 | mNumViewCells = (int)mViewCellsManager->GetViewCells().size();
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393 |
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394 | float variance = 0;
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395 | int totalPvs = 0;
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396 | float totalCost = 0;
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397 |
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398 | //-- compute statistics values of initial view cells
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399 | mViewCellsManager->EvaluateRenderStatistics(totalCost,
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400 | mExpectedCost,
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401 | mDeviation,
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402 | variance,
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403 | totalPvs,
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404 | mAvgRenderCost);
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405 |
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406 |
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407 | //-- fill merge queue
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408 | vector<MergeCandidate> candidates;
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409 |
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410 | mViewCellsManager->CollectMergeCandidates(rays, candidates);
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411 | while(!candidates.empty())
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412 | {
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413 | MergeCandidate mc = candidates.back();
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414 | candidates.pop_back();
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415 | EvalMergeCost(mc);
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416 | mMergeQueue.push(mc);
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417 | }
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418 |
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419 | Debug << "************************* merge ***********************************" << endl;
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420 | Debug << "deviation: " << mDeviation << endl;
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421 | Debug << "avg render cost: " << mAvgRenderCost << endl;
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422 | Debug << "expected cost: " <<mExpectedCost << endl;
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423 |
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424 |
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425 | ViewCellsManager::PvsStatistics pvsStats;
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426 | mViewCellsManager->GetPvsStatistics(pvsStats);
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427 |
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428 | static float expectedValue = pvsStats.avgPvs;
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429 |
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430 | // the current view cells are kept in this container
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431 | // we start with the current view cells from the
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432 | // view cell manager. They will change with
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433 | // subsequent merges
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434 | ViewCellContainer &viewCells = mViewCellsManager->GetViewCells();
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435 |
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436 |
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437 | ViewCell::NewMail();
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438 |
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439 | MergeStatistics mergeStats;
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440 | mergeStats.Start();
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441 |
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442 | long startTime = GetTime();
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443 |
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444 | mergeStats.collectTime = TimeDiff(startTime, GetTime());
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445 | mergeStats.candidates = (int)mMergeQueue.size();
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446 | startTime = GetTime();
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447 |
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448 | // frequency stats are updated
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449 | const int statsOut = 100;
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450 |
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451 | // passes are needed for statistics, because we don't want to record
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452 | // every merge
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453 | int pass = 0;
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454 | int mergedPerPass = 0;
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455 | float realExpectedCost = mExpectedCost;
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456 | float realAvgRenderCost = mAvgRenderCost;
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457 | int realNumViewCells = mNumViewCells;
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458 |
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459 | // maximal ratio of old expected render cost to expected render
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460 | // when the the render queue has to be reset.
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461 | float avgCostMaxDeviation;
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462 | int maxMergesPerPass;
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463 | int numActiveViewCells = 0;
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464 |
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465 | environment->GetIntValue("ViewCells.PostProcess.maxMergesPerPass", maxMergesPerPass);
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466 | environment->GetFloatValue("ViewCells.PostProcess.avgCostMaxDeviation", avgCostMaxDeviation);
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467 |
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468 | cout << "actual merge starts now ... " << endl;
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469 |
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470 | //ResetMergeQueue();
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471 |
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472 | //-- use priority queue to merge leaf pairs
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473 |
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474 | while (!mMergeQueue.empty() && (realNumViewCells > mMergeMinViewCells))
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475 | {
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476 | //-- reset merge queue if the ratio of current expected cost / real expected cost
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477 | // too small or after a given number of merges
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478 | if ((mergedPerPass > maxMergesPerPass) ||
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479 | (avgCostMaxDeviation > mAvgRenderCost / realAvgRenderCost))
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480 | {
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481 | Debug << "************ reset queue *****************\n"
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482 | << "ratios: " << avgCostMaxDeviation
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483 | << " real avg render cost " << realAvgRenderCost << " average render cost " << mAvgRenderCost
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484 | << " merged per pass : " << mergedPerPass << " of maximal " << maxMergesPerPass << endl;
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485 |
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486 | Debug << "Values before reset: "
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487 | << " erc: " << mExpectedCost
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488 | << " avgrc: " << mAvgRenderCost
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489 | << " dev: " << mDeviation << endl;
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490 |
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491 | // adjust render cost
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492 | ++ pass;
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493 |
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494 | mergedPerPass = 0;
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495 | mExpectedCost = realExpectedCost;
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496 | mAvgRenderCost = realAvgRenderCost;
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497 | mNumViewCells = realNumViewCells;
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498 |
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499 | const int numActiveViewCells = UpdateMergedViewCells(viewCells);
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500 |
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501 | ResetMergeQueue();
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502 |
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503 |
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504 | Debug << "Values after reset: "
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505 | << " erc: " << mExpectedCost
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506 | << " avg: " << mAvgRenderCost
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507 | << " dev: " << mDeviation << endl;
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508 |
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509 | if (mExportMergedViewCells)
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510 | {
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511 | ExportMergedViewCells(viewCells, objects, numActiveViewCells);
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512 | }
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513 | }
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514 |
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515 | #ifdef _DEBUG
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516 | Debug << "abs mergecost: " << mMergeQueue.top().GetMergeCost() <<
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517 | << " rel mergecost: " << mMergeQueue.top().GetRenderCost() / mExpectedCost <<
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518 | << " max ratio: " << mMergeMaxCostRatio << endl
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519 | << " expected value: " << realExpectedCost << endl;
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520 | #endif
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521 |
|
---|
522 |
|
---|
523 | MergeCandidate mc = mMergeQueue.top();
|
---|
524 | mMergeQueue.pop();
|
---|
525 |
|
---|
526 | // both view cells equal!
|
---|
527 | if (mc.mLeftViewCell == mc.mRightViewCell)
|
---|
528 | continue;
|
---|
529 |
|
---|
530 | if (mc.IsValid())
|
---|
531 | {
|
---|
532 | ViewCell::NewMail();
|
---|
533 |
|
---|
534 | -- realNumViewCells;
|
---|
535 | ++ mergeStats.merged;
|
---|
536 | ++ mergedPerPass;
|
---|
537 |
|
---|
538 |
|
---|
539 | //-- update statistical values
|
---|
540 |
|
---|
541 | // total render cost and deviation has changed
|
---|
542 | // real expected cost will be larger than expected cost used for the
|
---|
543 | // cost heuristics, but cannot recompute costs on each increase of the
|
---|
544 | // expected cost
|
---|
545 |
|
---|
546 | totalCost += mc.GetRenderCost();
|
---|
547 | mDeviation += mc.GetDeviationIncr();
|
---|
548 |
|
---|
549 | realExpectedCost = totalCost / (float)realNumViewCells;
|
---|
550 |
|
---|
551 | const float currentMergeCost = mc.GetMergeCost();
|
---|
552 |
|
---|
553 | // merge the view cells of leaf1 and leaf2
|
---|
554 | int pvsDiff;
|
---|
555 | ViewCellInterior *mergedVc =
|
---|
556 | MergeViewCells(mc.mLeftViewCell, mc.mRightViewCell, pvsDiff);
|
---|
557 |
|
---|
558 | totalPvs += pvsDiff;
|
---|
559 | // set timestamp
|
---|
560 | mergedVc->SetTimeStamp(mergeStats.merged);
|
---|
561 |
|
---|
562 | realAvgRenderCost = (float)totalPvs / (float)realNumViewCells;
|
---|
563 | #if VC_HISTORY
|
---|
564 | if (mc.mLeftViewCell->IsSibling(mc.mRightViewCell))
|
---|
565 | ++ mergeStats.siblings;
|
---|
566 | #endif
|
---|
567 | if (((mergeStats.merged % statsOut) == 0) ||
|
---|
568 | (realNumViewCells == mMergeMinViewCells))
|
---|
569 | {
|
---|
570 | cout << "merged " << mergeStats.merged << " view cells" << endl;
|
---|
571 |
|
---|
572 | mStats
|
---|
573 | << "#Pass\n" << pass << endl
|
---|
574 | << "#Merged\n" << mergeStats.merged << endl
|
---|
575 | << "#Viewcells\n" << realNumViewCells << endl
|
---|
576 | << "#CurrentCost\n" << currentMergeCost << endl
|
---|
577 | << "#RelativeCost\n" << currentMergeCost / mOverallCost << endl
|
---|
578 | << "#CurrentPvs\n" << mc.GetLeftViewCell()->GetPvs().GetSize() << endl
|
---|
579 | << "#MergedSiblings\n" << mergeStats.siblings << endl
|
---|
580 | << "#AvgTreeDist\n" << mergeStats.AvgTreeDist() << endl
|
---|
581 | << "#UsedExpectedCost\n" << mExpectedCost << endl
|
---|
582 | << "#RealExpectedCost\n" << realExpectedCost << endl
|
---|
583 | << "#RealAvgRenderCost\n" << realAvgRenderCost << endl
|
---|
584 | << "#AvgRenderCost\n" << mAvgRenderCost << endl
|
---|
585 | << "#expectedCostRatio\n" << mExpectedCost / realExpectedCost << endl
|
---|
586 | << "#Deviation\n" << mDeviation / (float)realNumViewCells << endl
|
---|
587 | << "#TotalDeviation\n" << mDeviation<< endl;
|
---|
588 | }
|
---|
589 | }
|
---|
590 | else
|
---|
591 | {
|
---|
592 | // merge candidate not valid, because one of the leaves was already
|
---|
593 | // merged with another one => validate and reinsert into queue
|
---|
594 | SetMergeCandidateValid(mc);
|
---|
595 | mMergeQueue.push(mc);
|
---|
596 | }
|
---|
597 | }
|
---|
598 |
|
---|
599 | // adjust stats and reset queue one final time
|
---|
600 | mExpectedCost = realExpectedCost;
|
---|
601 | mAvgRenderCost = realAvgRenderCost;
|
---|
602 | mNumViewCells = realNumViewCells;
|
---|
603 |
|
---|
604 | UpdateMergedViewCells(viewCells);
|
---|
605 | ResetMergeQueue();
|
---|
606 |
|
---|
607 |
|
---|
608 | // create a root node if the merge was not done till root level,
|
---|
609 | // else take the single node as new root
|
---|
610 | if ((int)viewCells.size() > 1)
|
---|
611 | {
|
---|
612 | Debug << "here888" << endl;
|
---|
613 | ViewCellInterior *root = new ViewCellInterior();
|
---|
614 |
|
---|
615 | root->SetTimeStamp(mergeStats.merged + 1);
|
---|
616 |
|
---|
617 | ViewCellContainer::const_iterator it, it_end = viewCells.end();
|
---|
618 | for (it = viewCells.begin(); it != it_end; ++ it)
|
---|
619 | root->SetupChildLink(*it);
|
---|
620 |
|
---|
621 | mRoot = root;
|
---|
622 | }
|
---|
623 | else if ((int)viewCells.size() == 1)
|
---|
624 | {
|
---|
625 | Debug << "here555" << endl;
|
---|
626 | mRoot = viewCells[0];
|
---|
627 | }
|
---|
628 |
|
---|
629 | // TODO delete because makes no sense here
|
---|
630 | mergeStats.expectedRenderCost = realExpectedCost;
|
---|
631 | mergeStats.deviation = mDeviation;
|
---|
632 |
|
---|
633 | // we want to optimize this heuristics
|
---|
634 | mergeStats.heuristics =
|
---|
635 | mDeviation * (1.0f - mRenderCostWeight) +
|
---|
636 | mExpectedCost * mRenderCostWeight;
|
---|
637 |
|
---|
638 | mergeStats.mergeTime = TimeDiff(startTime, GetTime());
|
---|
639 | mergeStats.Stop();
|
---|
640 |
|
---|
641 | Debug << mergeStats << endl << endl;
|
---|
642 |
|
---|
643 |
|
---|
644 | //TODO: should return sample contributions?
|
---|
645 | return mergeStats.merged;
|
---|
646 | }
|
---|
647 |
|
---|
648 |
|
---|
649 | ViewCell *ViewCellsTree::GetRoot()
|
---|
650 | {
|
---|
651 | return mRoot;
|
---|
652 | }
|
---|
653 |
|
---|
654 |
|
---|
655 | void ViewCellsTree::ResetMergeQueue()
|
---|
656 | {
|
---|
657 | cout << "reset merge queue ... ";
|
---|
658 |
|
---|
659 | vector<MergeCandidate> buf;
|
---|
660 | buf.reserve(mMergeQueue.size());
|
---|
661 |
|
---|
662 |
|
---|
663 | // store merge candidates in intermediate buffer
|
---|
664 | while (!mMergeQueue.empty())
|
---|
665 | {
|
---|
666 | MergeCandidate mc = mMergeQueue.top();
|
---|
667 | mMergeQueue.pop();
|
---|
668 |
|
---|
669 | // recalculate cost
|
---|
670 | SetMergeCandidateValid(mc);
|
---|
671 | buf.push_back(mc);
|
---|
672 | }
|
---|
673 |
|
---|
674 | vector<MergeCandidate>::const_iterator bit, bit_end = buf.end();
|
---|
675 |
|
---|
676 | // reinsert back into queue
|
---|
677 | for (bit = buf.begin(); bit != bit_end; ++ bit)
|
---|
678 | {
|
---|
679 | mMergeQueue.push(*bit);
|
---|
680 | }
|
---|
681 |
|
---|
682 | cout << "finished" << endl;
|
---|
683 | }
|
---|
684 |
|
---|
685 |
|
---|
686 | int ViewCellsTree::UpdateMergedViewCells(ViewCellContainer &viewCells)
|
---|
687 | {
|
---|
688 | int numActiveViewCells = 0;
|
---|
689 |
|
---|
690 | // find all already merged view cells and remove them from view cells
|
---|
691 | int i = 0;
|
---|
692 |
|
---|
693 | while (1)
|
---|
694 | {
|
---|
695 | while (!viewCells.empty() && (!viewCells.back()->GetParent()))
|
---|
696 | {
|
---|
697 | viewCells.pop_back();
|
---|
698 | }
|
---|
699 |
|
---|
700 | // all merged view cells have been found
|
---|
701 | if (i >= viewCells.size())
|
---|
702 | break;
|
---|
703 |
|
---|
704 | // already merged view cell, put it to end of vector
|
---|
705 | if (!viewCells[i]->IsRoot())
|
---|
706 | swap(viewCells[i], viewCells.back());
|
---|
707 |
|
---|
708 | ++ i;
|
---|
709 | }
|
---|
710 |
|
---|
711 | // add new view cells to container only if they don't have been
|
---|
712 | // merged in the mean time
|
---|
713 | while (!mActiveViewCells.empty())
|
---|
714 | {
|
---|
715 | if (!mActiveViewCells.back()->GetParent())
|
---|
716 | {
|
---|
717 | viewCells.push_back(mActiveViewCells.back());
|
---|
718 | ++ numActiveViewCells;
|
---|
719 | }
|
---|
720 |
|
---|
721 | mActiveViewCells.pop_back();
|
---|
722 | }
|
---|
723 |
|
---|
724 | // update standard deviation
|
---|
725 | ViewCellContainer::const_iterator vit, vit_end = viewCells.end();
|
---|
726 |
|
---|
727 | mDeviation = 0;
|
---|
728 |
|
---|
729 | for (vit = viewCells.begin(); vit != vit_end; ++ vit)
|
---|
730 | {
|
---|
731 | int lower = mViewCellsManager->GetMinPvsSize();
|
---|
732 | int upper = mViewCellsManager->GetMaxPvsSize();
|
---|
733 | float penalty = EvalPvsPenalty((*vit)->GetPvs().GetSize(), lower, upper);
|
---|
734 |
|
---|
735 | mDeviation += fabs(mAvgRenderCost - penalty);
|
---|
736 | }
|
---|
737 |
|
---|
738 | mDeviation /= (float)viewCells.size();
|
---|
739 |
|
---|
740 | // clear the view cells which were merged
|
---|
741 | mInactiveViewCells.clear();
|
---|
742 | // remove the new view cells
|
---|
743 | mActiveViewCells.clear();
|
---|
744 |
|
---|
745 | return numActiveViewCells;
|
---|
746 | }
|
---|
747 |
|
---|
748 |
|
---|
749 | void ViewCellsTree::ExportMergedViewCells(ViewCellContainer &viewCells,
|
---|
750 | const ObjectContainer &objects,
|
---|
751 | const int numActiveViewCells)
|
---|
752 | {
|
---|
753 |
|
---|
754 |
|
---|
755 | char s[64];
|
---|
756 |
|
---|
757 | sprintf(s, "merged_viewcells%07d.x3d", (int)viewCells.size());
|
---|
758 | Exporter *exporter = Exporter::GetExporter(s);
|
---|
759 |
|
---|
760 | if (exporter)
|
---|
761 | {
|
---|
762 | cout << "exporting " << (int)viewCells.size() << " merged view cells ... ";
|
---|
763 | exporter->ExportGeometry(objects);
|
---|
764 | //Debug << "vc size " << (int)viewCells.size() << " merge queue size: " << (int)mMergeQueue.size() << endl;
|
---|
765 | ViewCellContainer::const_iterator it, it_end = viewCells.end();
|
---|
766 |
|
---|
767 | int i = 0;
|
---|
768 | for (it = viewCells.begin(); it != it_end; ++ it)
|
---|
769 | {
|
---|
770 | Material m;
|
---|
771 | // assign special material to new view cells
|
---|
772 | // new view cells are on the back of container
|
---|
773 | if (i ++ >= (viewCells.size() - numActiveViewCells))
|
---|
774 | {
|
---|
775 | //m = RandomMaterial();
|
---|
776 | m.mDiffuseColor.r = RandomValue(0.5f, 1.0f);
|
---|
777 | m.mDiffuseColor.g = RandomValue(0.5f, 1.0f);
|
---|
778 | m.mDiffuseColor.b = RandomValue(0.5f, 1.0f);
|
---|
779 | }
|
---|
780 | else
|
---|
781 | {
|
---|
782 | float col = RandomValue(0.1f, 0.4f);
|
---|
783 | m.mDiffuseColor.r = col;
|
---|
784 | m.mDiffuseColor.g = col;
|
---|
785 | m.mDiffuseColor.b = col;
|
---|
786 | }
|
---|
787 |
|
---|
788 | exporter->SetForcedMaterial(m);
|
---|
789 | mViewCellsManager->ExportViewCellGeometry(exporter, *it);
|
---|
790 | }
|
---|
791 | delete exporter;
|
---|
792 | cout << "finished" << endl;
|
---|
793 | }
|
---|
794 | }
|
---|
795 |
|
---|
796 |
|
---|
797 | // TODO: should be done in view cells manager
|
---|
798 | ViewCellInterior *ViewCellsTree::MergeViewCells(ViewCell *l, ViewCell *r, int &pvsDiff) //const
|
---|
799 | {
|
---|
800 | ViewCellInterior *vc = mViewCellsManager->MergeViewCells(*l, *r);
|
---|
801 |
|
---|
802 | // if merge was unsuccessful
|
---|
803 | if (!vc) return NULL;
|
---|
804 |
|
---|
805 | // set new size of view cell
|
---|
806 | if (mUseAreaForPvs)
|
---|
807 | vc->SetArea(l->GetArea() + l->GetArea());
|
---|
808 | else
|
---|
809 | vc->SetVolume(r->GetVolume() + r->GetVolume());
|
---|
810 |
|
---|
811 | // important so other merge candidates sharing this view cell
|
---|
812 | // are notified that the merge cost must be updated!!
|
---|
813 | vc->Mail();
|
---|
814 |
|
---|
815 | const int pvs1 = l->GetPvs().GetSize();
|
---|
816 | const int pvs2 = r->GetPvs().GetSize();
|
---|
817 |
|
---|
818 |
|
---|
819 | //-- clean up old view cells
|
---|
820 | if (0 && !mExportMergedViewCells)
|
---|
821 | {
|
---|
822 | DEL_PTR(l);
|
---|
823 | DEL_PTR(r);
|
---|
824 | }
|
---|
825 | else
|
---|
826 | {
|
---|
827 | mInactiveViewCells.push_back(l);
|
---|
828 | mInactiveViewCells.push_back(r);
|
---|
829 |
|
---|
830 | mActiveViewCells.push_back(vc);
|
---|
831 | }
|
---|
832 |
|
---|
833 | pvsDiff = vc->GetPvs().GetSize() - pvs1 - pvs2;
|
---|
834 |
|
---|
835 | return vc;
|
---|
836 | }
|
---|
837 |
|
---|
838 |
|
---|
839 |
|
---|
840 |
|
---|
841 | int ViewCellsTree::RefineViewCells(const VssRayContainer &rays, const ObjectContainer &objects)
|
---|
842 | {
|
---|
843 | Debug << "refining " << (int)mMergeQueue.size() << " candidates " << endl;
|
---|
844 |
|
---|
845 | // Use priority queue of remaining leaf pairs
|
---|
846 | // The candidates either share the same view cells or
|
---|
847 | // are border leaves which share a boundary.
|
---|
848 | // We test if they can be shuffled, i.e.,
|
---|
849 | // either one leaf is made part of one view cell or the other
|
---|
850 | // leaf is made part of the other view cell. It is tested if the
|
---|
851 | // remaining view cells are "better" than the old ones.
|
---|
852 | //
|
---|
853 | // repeat the merging test numPasses times. For example, it could be
|
---|
854 | // that a shuffle only makes sense if another pair was shuffled before.
|
---|
855 | // Therefore we keep two queues and shift the merge candidates between
|
---|
856 | // those two queues until numPasses is reached
|
---|
857 |
|
---|
858 | queue<MergeCandidate> queue1;
|
---|
859 | queue<MergeCandidate> queue2;
|
---|
860 |
|
---|
861 | queue<MergeCandidate> *shuffleQueue = &queue1;
|
---|
862 | queue<MergeCandidate> *backQueue = &queue2;
|
---|
863 |
|
---|
864 | while (!mMergeQueue.empty())
|
---|
865 | {
|
---|
866 | MergeCandidate mc = mMergeQueue.top();
|
---|
867 | shuffleQueue->push(mc);
|
---|
868 | mMergeQueue.pop();
|
---|
869 | }
|
---|
870 |
|
---|
871 | const int numPasses = 5;
|
---|
872 | int pass = 0;
|
---|
873 | int passShuffled = 0;
|
---|
874 | int shuffled = 0;
|
---|
875 | int shuffledViewCells = 0;
|
---|
876 |
|
---|
877 | ViewCell::NewMail();
|
---|
878 |
|
---|
879 | do
|
---|
880 | {
|
---|
881 | passShuffled = 0;
|
---|
882 | while (!shuffleQueue->empty())
|
---|
883 | {
|
---|
884 | MergeCandidate mc = shuffleQueue->front();
|
---|
885 | shuffleQueue->pop();
|
---|
886 |
|
---|
887 | // both view cells equal or already shuffled
|
---|
888 | if ((mc.GetLeftViewCell() == mc.GetRightViewCell()) ||
|
---|
889 | (GetSize(mc.GetLeftViewCell()) == 1) ||
|
---|
890 | (GetSize(mc.GetRightViewCell()) == 1))
|
---|
891 | {
|
---|
892 | continue;
|
---|
893 | }
|
---|
894 |
|
---|
895 | // candidate for shuffling
|
---|
896 | const bool wasShuffled =
|
---|
897 | ShuffleLeaves(mc.GetLeftViewCell(), mc.GetRightViewCell());
|
---|
898 |
|
---|
899 | // shuffled or put into other queue for further refine
|
---|
900 | if (wasShuffled)
|
---|
901 | {
|
---|
902 | ++ passShuffled;
|
---|
903 |
|
---|
904 | if (!mc.GetLeftViewCell()->Mailed())
|
---|
905 | {
|
---|
906 | mc.GetLeftViewCell()->Mail();
|
---|
907 | ++ shuffledViewCells;
|
---|
908 | }
|
---|
909 | if (!mc.GetRightViewCell()->Mailed())
|
---|
910 | {
|
---|
911 | mc.GetRightViewCell()->Mail();
|
---|
912 | ++ shuffledViewCells;
|
---|
913 | }
|
---|
914 | }
|
---|
915 | else
|
---|
916 | {
|
---|
917 | backQueue->push(mc);
|
---|
918 | }
|
---|
919 | }
|
---|
920 |
|
---|
921 | // now the back queue is the current shuffle queue
|
---|
922 | swap(shuffleQueue, backQueue);
|
---|
923 | shuffled += passShuffled;
|
---|
924 | Debug << "shuffled in pass: " << passShuffled << endl;
|
---|
925 | }
|
---|
926 | while (((++ pass) < numPasses) && passShuffled);
|
---|
927 |
|
---|
928 | while (!shuffleQueue->empty())
|
---|
929 | {
|
---|
930 | shuffleQueue->pop();
|
---|
931 | }
|
---|
932 |
|
---|
933 | return shuffledViewCells;
|
---|
934 | }
|
---|
935 |
|
---|
936 |
|
---|
937 |
|
---|
938 |
|
---|
939 | inline int AddedPvsSize(ObjectPvs pvs1, const ObjectPvs &pvs2)
|
---|
940 | {
|
---|
941 | return pvs1.AddPvs(pvs2);
|
---|
942 | }
|
---|
943 |
|
---|
944 |
|
---|
945 | // recomputes pvs size minus pvs of leaf l
|
---|
946 | #if 0
|
---|
947 | inline int SubtractedPvsSize(BspViewCell *vc, BspLeaf *l, const ObjectPvs &pvs2)
|
---|
948 | {
|
---|
949 | ObjectPvs pvs;
|
---|
950 | vector<BspLeaf *>::const_iterator it, it_end = vc->mLeaves.end();
|
---|
951 | for (it = vc->mLeaves.begin(); it != vc->mLeaves.end(); ++ it)
|
---|
952 | if (*it != l)
|
---|
953 | pvs.AddPvs(*(*it)->mPvs);
|
---|
954 | return pvs.GetSize();
|
---|
955 | }
|
---|
956 | #endif
|
---|
957 |
|
---|
958 |
|
---|
959 | // computes pvs1 minus pvs2
|
---|
960 | inline int SubtractedPvsSize(ObjectPvs pvs1, const ObjectPvs &pvs2)
|
---|
961 | {
|
---|
962 | return pvs1.SubtractPvs(pvs2);
|
---|
963 | }
|
---|
964 |
|
---|
965 |
|
---|
966 | float ViewCellsTree::EvalShuffleCost(ViewCell *leaf,
|
---|
967 | ViewCell *vc1,
|
---|
968 | ViewCell *vc2) const
|
---|
969 | {
|
---|
970 | //const int pvs1 = SubtractedPvsSize(vc1, leaf, *leaf->mPvs);
|
---|
971 | const int pvs1 = SubtractedPvsSize(vc1->GetPvs(), leaf->GetPvs());
|
---|
972 | const int pvs2 = AddedPvsSize(vc2->GetPvs(), leaf->GetPvs());
|
---|
973 |
|
---|
974 | const int lowerPvsLimit = mViewCellsManager->GetMinPvsSize();
|
---|
975 | const int upperPvsLimit = mViewCellsManager->GetMaxPvsSize();
|
---|
976 |
|
---|
977 | const float pvsPenalty1 =
|
---|
978 | EvalPvsPenalty(pvs1, lowerPvsLimit, upperPvsLimit);
|
---|
979 |
|
---|
980 | const float pvsPenalty2 =
|
---|
981 | EvalPvsPenalty(pvs2, lowerPvsLimit, upperPvsLimit);
|
---|
982 |
|
---|
983 |
|
---|
984 | // don't shuffle leaves with pvs > max
|
---|
985 | if (0 && (pvs1 + pvs2 > mViewCellsManager->GetMaxPvsSize()))
|
---|
986 | {
|
---|
987 | return 1e20f;
|
---|
988 | }
|
---|
989 |
|
---|
990 | float p1, p2;
|
---|
991 |
|
---|
992 | if (mUseAreaForPvs)
|
---|
993 | {
|
---|
994 | p1 = vc1->GetArea() - leaf->GetArea();
|
---|
995 | p2 = vc2->GetArea() + leaf->GetArea();
|
---|
996 | }
|
---|
997 | else
|
---|
998 | {
|
---|
999 | p1 = vc1->GetVolume() - leaf->GetVolume();
|
---|
1000 | p2 = vc2->GetVolume() + leaf->GetVolume();
|
---|
1001 | }
|
---|
1002 |
|
---|
1003 | const float renderCost1 = pvsPenalty1 * p1;
|
---|
1004 | const float renderCost2 = pvsPenalty2 * p2;
|
---|
1005 |
|
---|
1006 | float dev1, dev2;
|
---|
1007 |
|
---|
1008 | if (1)
|
---|
1009 | {
|
---|
1010 | dev1 = fabs(mAvgRenderCost - pvsPenalty1);
|
---|
1011 | dev2 = fabs(mAvgRenderCost - pvsPenalty2);
|
---|
1012 | }
|
---|
1013 | else
|
---|
1014 | {
|
---|
1015 | dev1 = fabs(mExpectedCost - renderCost1);
|
---|
1016 | dev2 = fabs(mExpectedCost - renderCost2);
|
---|
1017 | }
|
---|
1018 |
|
---|
1019 | return mRenderCostWeight * (renderCost1 + renderCost2) +
|
---|
1020 | (1.0f - mRenderCostWeight) * (dev1 + dev2) / (float)mNumViewCells;
|
---|
1021 | }
|
---|
1022 |
|
---|
1023 |
|
---|
1024 | void ViewCellsTree::ShuffleLeaf(ViewCell *leaf,
|
---|
1025 | ViewCell *vc1,
|
---|
1026 | ViewCell *vc2) const
|
---|
1027 | {
|
---|
1028 | // compute new pvs and area
|
---|
1029 | vc1->GetPvs().SubtractPvs(leaf->GetPvs());
|
---|
1030 | vc2->GetPvs().AddPvs(leaf->GetPvs());
|
---|
1031 |
|
---|
1032 | if (mUseAreaForPvs)
|
---|
1033 | {
|
---|
1034 | vc1->SetArea(vc1->GetArea() - leaf->GetArea());
|
---|
1035 | vc2->SetArea(vc2->GetArea() + leaf->GetArea());
|
---|
1036 | }
|
---|
1037 | else
|
---|
1038 | {
|
---|
1039 | vc1->SetVolume(vc1->GetVolume() - leaf->GetVolume());
|
---|
1040 | vc2->SetVolume(vc2->GetVolume() + leaf->GetVolume());
|
---|
1041 | }
|
---|
1042 |
|
---|
1043 | // TODO |
---|
1044 | #if VC_HISTORY
|
---|
1045 | /// add to second view cell
|
---|
1046 | vc2->mLeaves.push_back(leaf);
|
---|
1047 |
|
---|
1048 | // erase leaf from old view cell
|
---|
1049 | vector<BspLeaf *>::iterator it = vc1->mLeaves.begin();
|
---|
1050 |
|
---|
1051 | for (; *it != leaf; ++ it);
|
---|
1052 | vc1->mLeaves.erase(it);
|
---|
1053 |
|
---|
1054 | /*vc1->GetPvs().mEntries.clear();
|
---|
1055 | for (; it != vc1->mLeaves.end(); ++ it)
|
---|
1056 | {
|
---|
1057 | if (*it == leaf)
|
---|
1058 | vc1->mLeaves.erase(it);
|
---|
1059 | else
|
---|
1060 | vc1->GetPvs().AddPvs(*(*it)->mPvs);
|
---|
1061 | }*/
|
---|
1062 |
|
---|
1063 | leaf->SetViewCell(vc2); // finally change view cell
|
---|
1064 | #endif
|
---|
1065 | }
|
---|
1066 |
|
---|
1067 |
|
---|
1068 | bool ViewCellsTree::ShuffleLeaves(ViewCell *l, ViewCell *r) const
|
---|
1069 | {
|
---|
1070 | float cost1, cost2;
|
---|
1071 |
|
---|
1072 | //-- first test if shuffling would decrease cost
|
---|
1073 | cost1 = GetCostHeuristics(l);
|
---|
1074 | cost2 = GetCostHeuristics(r);
|
---|
1075 |
|
---|
1076 | const float oldCost = cost1 + cost2;
|
---|
1077 |
|
---|
1078 | float shuffledCost1 = Limits::Infinity;
|
---|
1079 | float shuffledCost2 = Limits::Infinity;
|
---|
1080 |
|
---|
1081 | // the view cell should not be empty after the shuffle
|
---|
1082 | #if VC_HISTORY
|
---|
1083 | shuffledCost1 = EvalShuffleCost(l, vc1, vc2);
|
---|
1084 | /shuffledCost2 = EvalShuffleCost(r, vc2, vc1);
|
---|
1085 |
|
---|
1086 | // if cost of shuffle is less than old cost => shuffle
|
---|
1087 | if ((oldCost <= shuffledCost1) && (oldCost <= shuffledCost2))
|
---|
1088 | return false;
|
---|
1089 |
|
---|
1090 |
|
---|
1091 | if (shuffledCost1 < shuffledCost2)
|
---|
1092 | {
|
---|
1093 | ShuffleLeaf(leaf1, vc1, vc2);
|
---|
1094 | leaf1->Mail();
|
---|
1095 | }
|
---|
1096 | else
|
---|
1097 | {
|
---|
1098 | ShuffleLeaf(leaf2, vc2, vc1);
|
---|
1099 | leaf2->Mail();
|
---|
1100 | }
|
---|
1101 | #endif
|
---|
1102 | return true;
|
---|
1103 | }
|
---|
1104 |
|
---|
1105 |
|
---|
1106 | float ViewCellsTree::GetVariance(ViewCell *vc) const
|
---|
1107 | {
|
---|
1108 | const int upper = mViewCellsManager->GetMaxPvsSize();
|
---|
1109 | const int lower = mViewCellsManager->GetMinPvsSize();
|
---|
1110 |
|
---|
1111 | if (1)
|
---|
1112 | {
|
---|
1113 | const float penalty = EvalPvsPenalty(vc->GetPvs().GetSize(), lower, upper);
|
---|
1114 | return (mAvgRenderCost - penalty) * (mAvgRenderCost - penalty) / (float)mNumViewCells;
|
---|
1115 | }
|
---|
1116 |
|
---|
1117 | const float leafCost = GetRenderCost(vc);
|
---|
1118 | return (mExpectedCost - leafCost) * (mExpectedCost - leafCost);
|
---|
1119 | }
|
---|
1120 |
|
---|
1121 |
|
---|
1122 | float ViewCellsTree::GetDeviation(ViewCell *vc) const
|
---|
1123 | {
|
---|
1124 | const int upper = mViewCellsManager->GetMaxPvsSize();
|
---|
1125 | const int lower = mViewCellsManager->GetMinPvsSize();
|
---|
1126 |
|
---|
1127 | if (1)
|
---|
1128 | {
|
---|
1129 | const float penalty = EvalPvsPenalty(vc->GetPvs().GetSize(), lower, upper);
|
---|
1130 | return fabs(mAvgRenderCost - penalty) / (float)mNumViewCells;
|
---|
1131 | }
|
---|
1132 |
|
---|
1133 | const float renderCost = GetRenderCost(vc);
|
---|
1134 | return fabs(mExpectedCost - renderCost);
|
---|
1135 | }
|
---|
1136 |
|
---|
1137 |
|
---|
1138 |
|
---|
1139 | float ViewCellsTree::GetRenderCost(ViewCell *vc) const
|
---|
1140 | {
|
---|
1141 | if (mUseAreaForPvs)
|
---|
1142 | return vc->GetPvs().GetSize() * vc->GetArea();
|
---|
1143 |
|
---|
1144 | return vc->GetPvs().GetSize() * vc->GetVolume();
|
---|
1145 | }
|
---|
1146 |
|
---|
1147 |
|
---|
1148 | float ViewCellsTree::GetCostHeuristics(ViewCell *vc) const
|
---|
1149 | {
|
---|
1150 | return GetRenderCost(vc) * mRenderCostWeight +
|
---|
1151 | GetDeviation(vc) * (1.0f - mRenderCostWeight);
|
---|
1152 | }
|
---|
1153 |
|
---|
1154 |
|
---|
1155 | void ViewCellsTree::SetMergeCandidateValid(MergeCandidate &mc) const
|
---|
1156 | {
|
---|
1157 | while (mc.mLeftViewCell->mParent)
|
---|
1158 | {
|
---|
1159 | mc.mLeftViewCell = mc.mLeftViewCell->mParent;
|
---|
1160 | }
|
---|
1161 |
|
---|
1162 | while (mc.mRightViewCell->mParent)
|
---|
1163 | {
|
---|
1164 | mc.mRightViewCell = mc.mRightViewCell->mParent;
|
---|
1165 | }
|
---|
1166 |
|
---|
1167 | EvalMergeCost(mc);
|
---|
1168 | }
|
---|
1169 |
|
---|
1170 |
|
---|
1171 | void ViewCellsTree::EvalMergeCost(MergeCandidate &mc) const
|
---|
1172 | {
|
---|
1173 | //-- compute pvs difference
|
---|
1174 | const int newPvs =
|
---|
1175 | ComputeMergedPvsSize(mc.mLeftViewCell->GetPvs(),
|
---|
1176 | mc.mRightViewCell->GetPvs());
|
---|
1177 |
|
---|
1178 | const float newPenalty =
|
---|
1179 | EvalPvsPenalty(newPvs,
|
---|
1180 | mViewCellsManager->GetMinPvsSize(),
|
---|
1181 | mViewCellsManager->GetMaxPvsSize());
|
---|
1182 |
|
---|
1183 | ViewCell *vc1 = mc.mLeftViewCell;
|
---|
1184 | ViewCell *vc2 = mc.mRightViewCell;
|
---|
1185 |
|
---|
1186 | //-- compute ratio of old cost
|
---|
1187 | // (i.e., added size of left and right view cell times pvs size)
|
---|
1188 | // to new rendering cost (i.e, size of merged view cell times pvs size)
|
---|
1189 | const float oldCost = GetRenderCost(vc1) + GetRenderCost(vc2);
|
---|
1190 |
|
---|
1191 | const float newCost = mUseAreaForPvs ?
|
---|
1192 | (float)newPenalty * (vc1->GetArea() + vc2->GetArea()) :
|
---|
1193 | (float)newPenalty * (vc1->GetVolume() + vc2->GetVolume());
|
---|
1194 |
|
---|
1195 |
|
---|
1196 | // strong penalty if pvs size too large
|
---|
1197 | if (0 && (newPvs > mViewCellsManager->GetMaxPvsSize()))
|
---|
1198 | {
|
---|
1199 | mc.mRenderCost = 1e20f;
|
---|
1200 | }
|
---|
1201 | else
|
---|
1202 | {
|
---|
1203 | mc.mRenderCost = (newCost - oldCost) /
|
---|
1204 | mViewCellsManager->GetViewSpaceBox().GetVolume();
|
---|
1205 | }
|
---|
1206 |
|
---|
1207 |
|
---|
1208 | //-- merge cost also takes deviation into account
|
---|
1209 | float newDev, oldDev;
|
---|
1210 |
|
---|
1211 | if (1)
|
---|
1212 | newDev = fabs(mAvgRenderCost - newPenalty) / (float)mNumViewCells;
|
---|
1213 | else
|
---|
1214 | newDev = fabs(mExpectedCost - newCost) / (float)mNumViewCells;
|
---|
1215 |
|
---|
1216 | oldDev = GetDeviation(vc1) + GetDeviation(vc2);
|
---|
1217 |
|
---|
1218 | // compute deviation increase
|
---|
1219 | mc.mDeviationIncr = newDev - oldDev;
|
---|
1220 |
|
---|
1221 | //Debug << "render cost: " << mc.mRenderCost * mRenderCostWeight << endl;
|
---|
1222 | //Debug << "standard deviation: " << mc.mDeviationIncr * mRenderCostWeight << endl;
|
---|
1223 | }
|
---|
1224 |
|
---|
1225 |
|
---|
1226 | void ViewCellsTree::CompressViewCellsPvs()
|
---|
1227 | {
|
---|
1228 | stack<ViewCell *> tstack;
|
---|
1229 |
|
---|
1230 | while (!tstack.empty())
|
---|
1231 | {
|
---|
1232 | ViewCell *viewCell = tstack.top();
|
---|
1233 | tstack.pop();
|
---|
1234 |
|
---|
1235 | if (viewCell->IsLeaf())
|
---|
1236 | {
|
---|
1237 |
|
---|
1238 | }
|
---|
1239 | else
|
---|
1240 | {
|
---|
1241 | ViewCellInterior *interior = dynamic_cast<ViewCellInterior *>(viewCell);
|
---|
1242 | ComputeCommonPvs(interior);
|
---|
1243 | }
|
---|
1244 | }
|
---|
1245 | }
|
---|
1246 |
|
---|
1247 |
|
---|
1248 | void ViewCellsTree::CollectBestViewCellSet(ViewCellContainer &viewCells,
|
---|
1249 | const int numViewCells)
|
---|
1250 | {
|
---|
1251 | TraversalQueue tqueue;
|
---|
1252 | tqueue.push(mRoot);
|
---|
1253 | Debug << "here34 " << numViewCells << endl;
|
---|
1254 | while (!tqueue.empty())
|
---|
1255 | {
|
---|
1256 | ViewCell *vc = tqueue.top();
|
---|
1257 | tqueue.pop();
|
---|
1258 | Debug << "here7 " << vc->GetTimeStamp() << endl;
|
---|
1259 | if (vc->IsLeaf())
|
---|
1260 | {
|
---|
1261 | Debug << "here6" << endl;
|
---|
1262 | viewCells.push_back(vc);
|
---|
1263 | }
|
---|
1264 | else if (viewCells.size() + tqueue.size() < numViewCells)
|
---|
1265 | { Debug << "here4" << endl;
|
---|
1266 | ViewCellInterior *interior = dynamic_cast<ViewCellInterior *>(vc);
|
---|
1267 |
|
---|
1268 | ViewCellContainer::const_iterator it, it_end = interior->mChildren.end();
|
---|
1269 |
|
---|
1270 | for (it = interior->mChildren.begin(); it != it_end; ++ it)
|
---|
1271 | {
|
---|
1272 | tqueue.push(*it);
|
---|
1273 | }
|
---|
1274 | }
|
---|
1275 | }
|
---|
1276 | }
|
---|
1277 |
|
---|
1278 |
|
---|
1279 | void ViewCellsTree::ComputeCommonPvs(ViewCellInterior *interior)
|
---|
1280 | {
|
---|
1281 | Intersectable::NewMail();
|
---|
1282 |
|
---|
1283 | ViewCellContainer::const_iterator cit, cit_end = interior->mChildren.end();
|
---|
1284 |
|
---|
1285 | ObjectPvsMap::const_iterator oit;
|
---|
1286 |
|
---|
1287 | // mail all objects in the leaf sets
|
---|
1288 | for (cit = interior->mChildren.begin(); cit != cit_end; ++ cit)
|
---|
1289 | {
|
---|
1290 | ViewCell *vc = *cit;
|
---|
1291 |
|
---|
1292 | ObjectPvsMap::const_iterator oit_end = vc->GetPvs().mEntries.end();
|
---|
1293 |
|
---|
1294 | for (oit = vc->GetPvs().mEntries.begin(); oit != oit_end; ++ oit)
|
---|
1295 | {
|
---|
1296 | if (!(*oit).first->Mailed())
|
---|
1297 | (*oit).first->Mail();
|
---|
1298 |
|
---|
1299 | (*oit).first->IncMail();
|
---|
1300 | }
|
---|
1301 | }
|
---|
1302 |
|
---|
1303 | interior->GetPvs().mEntries.clear();
|
---|
1304 | cit_end = interior->mChildren.end();
|
---|
1305 |
|
---|
1306 | // only the objects which are present in all leaf pvs
|
---|
1307 | // should remain in the parent pvs
|
---|
1308 |
|
---|
1309 | for (cit = interior->mChildren.begin(); cit != cit_end; ++ cit)
|
---|
1310 | {
|
---|
1311 | ViewCell *vc = *cit;
|
---|
1312 |
|
---|
1313 | ObjectPvsMap::const_iterator oit_end = vc->GetPvs().mEntries.end();
|
---|
1314 |
|
---|
1315 | for (oit = vc->GetPvs().mEntries.begin(); oit != oit_end; ++ oit)
|
---|
1316 | {
|
---|
1317 | if ((*oit).first->Mailed((int)interior->mChildren.size()))
|
---|
1318 | {
|
---|
1319 | interior->GetPvs().AddSample((*oit).first, (*oit).second.mSumPdf);
|
---|
1320 | //(*oit)->remove();
|
---|
1321 | }
|
---|
1322 | }
|
---|
1323 | }
|
---|
1324 |
|
---|
1325 | // delete all the objects from the leaf sets which were moved
|
---|
1326 | // to parent pvs
|
---|
1327 | ObjectPvsMap::const_iterator oit_end = interior->GetPvs().mEntries.end();
|
---|
1328 |
|
---|
1329 | for (oit = interior->GetPvs().mEntries.begin(); oit != oit_end; ++ oit)
|
---|
1330 | {
|
---|
1331 | for (cit = interior->mChildren.begin(); cit != cit_end; ++ cit)
|
---|
1332 | {
|
---|
1333 | (*cit)->GetPvs().RemoveSample((*oit).first, Limits::Infinity);
|
---|
1334 | }
|
---|
1335 | }
|
---|
1336 | }
|
---|
1337 |
|
---|
1338 |
|
---|
1339 | /**************************************************************************/
|
---|
1340 | /* MergeCandidate implementation */
|
---|
1341 | /**************************************************************************/
|
---|
1342 |
|
---|
1343 |
|
---|
1344 | MergeCandidate::MergeCandidate(ViewCell *l, ViewCell *r):
|
---|
1345 | mRenderCost(0),
|
---|
1346 | mDeviationIncr(0),
|
---|
1347 | mLeftViewCell(l),
|
---|
1348 | mRightViewCell(r)
|
---|
1349 | {
|
---|
1350 | //EvalMergeCost();
|
---|
1351 | }
|
---|
1352 |
|
---|
1353 |
|
---|
1354 | void MergeCandidate::SetRightViewCell(ViewCell *v)
|
---|
1355 | {
|
---|
1356 | mRightViewCell = v;
|
---|
1357 | }
|
---|
1358 |
|
---|
1359 |
|
---|
1360 | void MergeCandidate::SetLeftViewCell(ViewCell *v)
|
---|
1361 | {
|
---|
1362 | mLeftViewCell = v;
|
---|
1363 | }
|
---|
1364 |
|
---|
1365 |
|
---|
1366 | ViewCell *MergeCandidate::GetRightViewCell() const
|
---|
1367 | {
|
---|
1368 | return mRightViewCell;
|
---|
1369 | }
|
---|
1370 |
|
---|
1371 |
|
---|
1372 | ViewCell *MergeCandidate::GetLeftViewCell() const
|
---|
1373 | {
|
---|
1374 | return mLeftViewCell;
|
---|
1375 | }
|
---|
1376 |
|
---|
1377 |
|
---|
1378 | ViewCell *MergeCandidate::GetInitialRightViewCell() const
|
---|
1379 | {
|
---|
1380 | return mInitialRightViewCell;
|
---|
1381 | }
|
---|
1382 |
|
---|
1383 |
|
---|
1384 | ViewCell *MergeCandidate::GetInitialLeftViewCell() const
|
---|
1385 | {
|
---|
1386 | return mInitialLeftViewCell;
|
---|
1387 | }
|
---|
1388 |
|
---|
1389 |
|
---|
1390 | bool MergeCandidate::IsValid() const
|
---|
1391 | {
|
---|
1392 | return !(mLeftViewCell->mParent && mRightViewCell->mParent);
|
---|
1393 | }
|
---|
1394 |
|
---|
1395 |
|
---|
1396 | float MergeCandidate::GetRenderCost() const
|
---|
1397 | {
|
---|
1398 | return mRenderCost;
|
---|
1399 | }
|
---|
1400 |
|
---|
1401 |
|
---|
1402 | float MergeCandidate::GetDeviationIncr() const
|
---|
1403 | {
|
---|
1404 | return mDeviationIncr;
|
---|
1405 | }
|
---|
1406 |
|
---|
1407 |
|
---|
1408 | float MergeCandidate::GetMergeCost() const
|
---|
1409 | {
|
---|
1410 | return mRenderCost * sRenderCostWeight +
|
---|
1411 | mDeviationIncr * (1.0f - sRenderCostWeight);
|
---|
1412 | }
|
---|
1413 |
|
---|
1414 |
|
---|
1415 | /************************************************************************/
|
---|
1416 | /* MergeStatistics implementation */
|
---|
1417 | /************************************************************************/
|
---|
1418 |
|
---|
1419 |
|
---|
1420 | void MergeStatistics::Print(ostream &app) const
|
---|
1421 | {
|
---|
1422 | app << "===== Merge statistics ===============\n";
|
---|
1423 |
|
---|
1424 | app << setprecision(4);
|
---|
1425 |
|
---|
1426 | app << "#N_CTIME ( Overall time [s] )\n" << Time() << " \n";
|
---|
1427 |
|
---|
1428 | app << "#N_CCTIME ( Collect candidates time [s] )\n" << collectTime * 1e-3f << " \n";
|
---|
1429 |
|
---|
1430 | app << "#N_MTIME ( Merge time [s] )\n" << mergeTime * 1e-3f << " \n";
|
---|
1431 |
|
---|
1432 | app << "#N_NODES ( Number of nodes before merge )\n" << nodes << "\n";
|
---|
1433 |
|
---|
1434 | app << "#N_CANDIDATES ( Number of merge candidates )\n" << candidates << "\n";
|
---|
1435 |
|
---|
1436 | app << "#N_MERGEDSIBLINGS ( Number of merged siblings )\n" << siblings << "\n";
|
---|
1437 |
|
---|
1438 | app << "#OVERALLCOST ( overall merge cost )\n" << overallCost << "\n";
|
---|
1439 |
|
---|
1440 | app << "#N_MERGEDNODES ( Number of merged nodes )\n" << merged << "\n";
|
---|
1441 |
|
---|
1442 | app << "#MAX_TREEDIST ( Maximal distance in tree of merged leaves )\n" << maxTreeDist << "\n";
|
---|
1443 |
|
---|
1444 | app << "#AVG_TREEDIST ( Average distance in tree of merged leaves )\n" << AvgTreeDist() << "\n";
|
---|
1445 |
|
---|
1446 | app << "#EXPECTEDCOST ( expected render cost )\n" << expectedRenderCost << "\n";
|
---|
1447 |
|
---|
1448 | app << "#DEVIATION ( deviation )\n" << deviation << "\n";
|
---|
1449 |
|
---|
1450 | app << "#HEURISTICS ( heuristics )\n" << heuristics << "\n";
|
---|
1451 |
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1452 |
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1453 | app << "===== END OF BspTree statistics ==========\n";
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1454 | } |
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