1 | #include "SceneGraph.h"
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2 | #include "Exporter.h"
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3 | #include "UnigraphicsParser.h"
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4 | #include "X3dParser.h"
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5 | #include "Preprocessor.h"
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6 | #include "ViewCell.h"
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7 | #include "Environment.h"
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8 | #include "ViewCellsManager.h"
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9 | #include "ViewCellBsp.h"
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10 | #include "VspBspTree.h"
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11 | #include "RenderSimulator.h"
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12 | #include "GlRenderer.h"
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13 | #include "PlyParser.h"
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14 | #include "SamplingStrategy.h"
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15 | #include "VspTree.h"
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16 | #include "OspTree.h"
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17 | #include "ObjParser.h"
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18 | #include "BvHierarchy.h"
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19 | #include "HierarchyManager.h"
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20 | #include "VssRay.h"
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21 | #include "IntelRayCaster.h"
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22 | #include "InternalRayCaster.h"
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23 |
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24 |
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25 |
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26 | #define DEBUG_RAYCAST 0
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27 | #define SHOW_RAYCAST_TIMING 1
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28 |
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29 |
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30 | namespace GtpVisibilityPreprocessor {
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31 |
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32 | const static bool ADDITIONAL_GEOMETRY_HACK = false;
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33 |
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34 |
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35 | // HACK: Artificially modify scene to watch rendercost changes
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36 | static void AddGeometry(SceneGraph *scene)
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37 | {
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38 | scene->GetRoot()->UpdateBox();
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39 |
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40 | AxisAlignedBox3 sceneBox = scene->GetBox();
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41 |
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42 | int n = 200;
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43 |
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44 | if (0)
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45 | {
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46 | // form grid of boxes
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47 | for (int i = 0; i < n; ++ i)
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48 | {
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49 | for (int j = 0; j < n; ++ j)
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50 | {
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51 | const Vector3 scale2((float)j * 0.8f / n + 0.1f, 0.05f, (float)i * 0.8f / (float)n + 0.1f);
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52 |
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53 | const Vector3 pt2 = sceneBox.Min() + scale2 * (sceneBox.Max() - sceneBox.Min());
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54 |
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55 | const Vector3 boxSize = sceneBox.Size() * Vector3(0.0025f, 0.01f, 0.0025f);
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56 | AxisAlignedBox3 box(pt2, pt2 + boxSize);
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57 | Mesh *mesh = CreateMeshFromBox(box);
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58 |
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59 | mesh->Preprocess();
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60 |
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61 | MeshInstance *mi = new MeshInstance(mesh);
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62 | scene->GetRoot()->mGeometry.push_back(mi);
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63 | }
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64 | }
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65 |
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66 | for (int i = 0; i < n; ++ i)
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67 | {
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68 | for (int j = 0; j < n; ++ j)
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69 | {
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70 | const Vector3 scale2(0.15f, (float)j * 0.8f / n + 0.1f, (float)i * 0.8f / (float)n + 0.1f);
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71 |
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72 | Vector3 pt2 = sceneBox.Min() + scale2 * (sceneBox.Max() - sceneBox.Min());
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73 |
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74 | Vector3 boxSize = sceneBox.Size() * Vector3(0.0025f, 0.01f, 0.0025f);
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75 | AxisAlignedBox3 box(pt2, pt2 + boxSize);
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76 | Mesh *mesh = CreateMeshFromBox(box);
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77 |
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78 | mesh->Preprocess();
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79 |
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80 | MeshInstance *mi = new MeshInstance(mesh);
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81 | scene->GetRoot()->mGeometry.push_back(mi);
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82 | }
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83 | }
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84 |
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85 | for (int i = 0; i < n; ++ i)
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86 | {
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87 | const Vector3 scale2(2, 0.2f, (float)i * 0.8f / (float)n + 0.1f);
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88 |
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89 | Vector3 pt2 = sceneBox.Min() + scale2 * (sceneBox.Max() - sceneBox.Min());
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90 |
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91 | //Vector3 boxSize = sceneBox.Size() * Vector3(0.0025, 0.01, 0.0025);
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92 | Vector3 boxSize = sceneBox.Size() * Vector3(0.005f, 0.02f, 0.005f);
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93 |
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94 | AxisAlignedBox3 box(pt2 + 0.1f, pt2 + boxSize);
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95 | Mesh *mesh = CreateMeshFromBox(box);
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96 |
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97 | mesh->Preprocess();
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98 |
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99 | MeshInstance *mi = new MeshInstance(mesh);
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100 | scene->GetRoot()->mGeometry.push_back(mi);
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101 | }
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102 |
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103 | scene->GetRoot()->UpdateBox();
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104 | }
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105 |
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106 | if (1)
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107 | {
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108 | // plane separating view space regions
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109 | const Vector3 scale(1.0f, 0.0, 0);
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110 |
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111 | Vector3 pt = sceneBox.Min() + scale * (sceneBox.Max() - sceneBox.Min());
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112 |
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113 | Plane3 cuttingPlane(Vector3(1, 0, 0), pt);
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114 | Mesh *planeMesh = new Mesh();
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115 |
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116 | Polygon3 *poly = sceneBox.CrossSection(cuttingPlane);
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117 | IncludePolyInMesh(*poly, *planeMesh);
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118 |
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119 | planeMesh->Preprocess();
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120 |
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121 | MeshInstance *planeMi = new MeshInstance(planeMesh);
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122 | scene->GetRoot()->mGeometry.push_back(planeMi);
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123 | }
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124 | }
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125 |
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126 |
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127 | Preprocessor::Preprocessor():
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128 | mKdTree(NULL),
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129 | mBspTree(NULL),
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130 | mVspBspTree(NULL),
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131 | mHierarchyManager(NULL),
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132 | mViewCellsManager(NULL),
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133 | mRenderSimulator(NULL),
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134 | mPass(0),
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135 | mSceneGraph(NULL),
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136 | mRayCaster(NULL),
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137 | mStopComputation(false)
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138 | {
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139 | Environment::GetSingleton()->GetBoolValue("Preprocessor.useGlRenderer", mUseGlRenderer);
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140 |
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141 | // renderer will be constructed when the scene graph and viewcell manager will be known
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142 | renderer = NULL;
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143 |
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144 | Environment::GetSingleton()->GetBoolValue("Preprocessor.delayVisibilityComputation",
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145 | mDelayVisibilityComputation);
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146 |
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147 | Environment::GetSingleton()->GetBoolValue("Preprocessor.useGlDebugger", mUseGlDebugger);
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148 | Environment::GetSingleton()->GetBoolValue("Preprocessor.loadMeshes", mLoadMeshes);
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149 | Environment::GetSingleton()->GetBoolValue("Preprocessor.quitOnFinish", mQuitOnFinish);
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150 | Environment::GetSingleton()->GetBoolValue("Preprocessor.computeVisibility", mComputeVisibility);
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151 | Environment::GetSingleton()->GetBoolValue("Preprocessor.detectEmptyViewSpace", mDetectEmptyViewSpace);
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152 | Environment::GetSingleton()->GetBoolValue("Preprocessor.exportVisibility", mExportVisibility );
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153 |
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154 | char buffer[256];
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155 | Environment::GetSingleton()->GetStringValue("Preprocessor.visibilityFile", buffer);
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156 |
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157 | mVisibilityFileName = buffer;
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158 | Environment::GetSingleton()->GetBoolValue("Preprocessor.applyVisibilityFilter", mApplyVisibilityFilter );
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159 | Environment::GetSingleton()->GetBoolValue("Preprocessor.applyVisibilitySpatialFilter",
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160 | mApplyVisibilitySpatialFilter );
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161 | Environment::GetSingleton()->GetFloatValue("Preprocessor.visibilityFilterWidth", mVisibilityFilterWidth);
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162 |
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163 | Debug << "detect empty view space=" << mDetectEmptyViewSpace << endl;
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164 | Debug << "load meshes: " << mLoadMeshes << endl;
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165 | }
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166 |
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167 |
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168 | Preprocessor::~Preprocessor()
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169 | {
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170 | cout << "cleaning up" << endl;
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171 |
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172 | cout << "Deleting view cells manager ... \n";
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173 | DEL_PTR(mViewCellsManager);
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174 | cout << "done.\n";
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175 |
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176 | cout << "Deleting bsp tree ... \n";
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177 | DEL_PTR(mBspTree);
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178 | cout << "done.\n";
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179 |
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180 | cout << "Deleting kd tree...\n";
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181 | DEL_PTR(mKdTree);
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182 | cout << "done.\n";
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183 |
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184 | cout << "Deleting hierarchy manager...\n";
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185 | DEL_PTR(mHierarchyManager);
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186 | cout << "done.\n";
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187 |
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188 | cout << "Deleting vspbsp tree...\n";
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189 | DEL_PTR(mVspBspTree);
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190 | cout << "done.\n";
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191 |
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192 | cout << "Deleting scene graph...\n";
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193 | DEL_PTR(mSceneGraph);
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194 | cout << "done.\n";
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195 |
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196 | DEL_PTR(mRenderSimulator);
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197 | DEL_PTR(renderer);
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198 | DEL_PTR(mRayCaster);
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199 | }
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200 |
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201 |
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202 | GlRendererBuffer *Preprocessor::GetRenderer()
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203 | {
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204 | return renderer;
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205 | }
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206 |
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207 |
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208 | static int SplitFilenames(const string str, vector<string> &filenames)
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209 | {
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210 | int pos = 0;
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211 |
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212 | while(1) {
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213 | int npos = (int)str.find(';', pos);
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214 |
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215 | if (npos < 0 || npos - pos < 1)
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216 | break;
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217 | filenames.push_back(string(str, pos, npos - pos));
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218 | pos = npos + 1;
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219 | }
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220 |
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221 | filenames.push_back(string(str, pos, str.size() - pos));
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222 | return (int)filenames.size();
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223 | }
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224 |
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225 |
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226 | bool Preprocessor::LoadBinaryObj(const string filename,
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227 | SceneGraphNode *root,
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228 | vector<FaceParentInfo> *parents)
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229 | {
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230 | //ifstream samplesIn(filename, ios::binary);
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231 | igzstream samplesIn(filename.c_str());
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232 |
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233 | if (!samplesIn.is_open())
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234 | return false;
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235 |
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236 | cout << "binary obj dump available, loading " << filename.c_str() << endl;
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237 | // table associating indices with vectors
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238 | map<int, Vector3> hashTable;
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239 |
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240 | // table for vertices
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241 | VertexContainer vertices;
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242 | FaceContainer faces;
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243 |
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244 | while (1)
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245 | {
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246 | Triangle3 tri;
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247 |
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248 | samplesIn.read(reinterpret_cast<char *>(tri.mVertices + 0), sizeof(Vector3));
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249 | samplesIn.read(reinterpret_cast<char *>(tri.mVertices + 1), sizeof(Vector3));
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250 | samplesIn.read(reinterpret_cast<char *>(tri.mVertices + 2), sizeof(Vector3));
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251 |
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252 | // end of file reached
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253 | if (samplesIn.eof())
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254 | break;
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255 |
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256 | TriangleIntersectable *obj = new TriangleIntersectable(tri);
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257 | root->mGeometry.push_back(obj);
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258 |
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259 | // matt: we don't really need to keep an additional data structure
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260 | // if working with triangles => remove this
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261 | if (parents)
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262 | {
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263 | FaceParentInfo info(obj, 0);
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264 | parents->push_back(info);
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265 | }
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266 | }
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267 |
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268 | return true;
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269 | }
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270 |
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271 |
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272 | bool Preprocessor::ExportBinaryObj(const string filename, SceneGraphNode *root)
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273 | {
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274 | //ifstream samplesIn(filename, ios::binary);
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275 | ogzstream samplesOut(filename.c_str());
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276 | if (!samplesOut.is_open())
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277 | return false;
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278 |
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279 | ObjectContainer::const_iterator oit, oit_end = root->mGeometry.end();
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280 |
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281 | for (oit = root->mGeometry.begin(); oit != oit_end; ++ oit)
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282 | {
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283 | Intersectable *obj = *oit;
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284 |
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285 | if (obj->Type() == Intersectable::TRIANGLE_INTERSECTABLE)
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286 | {
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287 | Triangle3 tri = dynamic_cast<TriangleIntersectable *>(obj)->GetItem();
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288 |
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289 | samplesOut.write(reinterpret_cast<char *>(tri.mVertices + 0), sizeof(Vector3));
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290 | samplesOut.write(reinterpret_cast<char *>(tri.mVertices + 1), sizeof(Vector3));
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291 | samplesOut.write(reinterpret_cast<char *>(tri.mVertices + 2), sizeof(Vector3));
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292 | }
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293 | else
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294 | {
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295 | cout << "not implemented intersectable type " << obj->Type() << endl;
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296 | }
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297 | }
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298 |
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299 | return true;
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300 | }
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301 |
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302 | static string ReplaceSuffix(string filename, string a, string b)
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303 | {
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304 | string result = filename;
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305 |
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306 | int pos = (int)filename.rfind(a, (int)filename.size() - 1);
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307 | if (pos == filename.size() - a.size()) {
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308 | result.replace(pos, a.size(), b);
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309 | }
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310 | return result;
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311 | }
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312 |
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313 |
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314 | bool
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315 | Preprocessor::LoadScene(const string filename)
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316 | {
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317 | // use leaf nodes of the original spatial hierarchy as occludees
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318 | mSceneGraph = new SceneGraph;
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319 |
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320 | Parser *parser;
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321 | vector<string> filenames;
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322 | const int files = SplitFilenames(filename, filenames);
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323 | cout << "number of input files: " << files << endl;
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324 | bool result = false;
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325 |
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326 | // root for different files
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327 | mSceneGraph->SetRoot(new SceneGraphNode());
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328 |
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329 | // intel ray caster can only trace triangles
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330 | int rayCastMethod;
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331 | Environment::GetSingleton()->GetIntValue("Preprocessor.rayCastMethod", rayCastMethod);
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332 | vector<FaceParentInfo> *fi = (rayCastMethod == RayCaster::INTEL_RAYCASTER) ?
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333 | &mFaceParents : NULL;
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334 |
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335 | if (files == 1)
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336 | {
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337 | if (strstr(filename.c_str(), ".x3d"))
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338 | {
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339 | parser = new X3dParser;
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340 |
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341 | result = parser->ParseFile(filename,
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342 | mSceneGraph->GetRoot(),
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343 | mLoadMeshes,
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344 | fi);
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345 | delete parser;
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346 | }
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347 | else if (strstr(filename.c_str(), ".ply") || strstr(filename.c_str(), ".plb"))
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348 | {
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349 | parser = new PlyParser;
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350 |
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351 | result = parser->ParseFile(filename,
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352 | mSceneGraph->GetRoot(),
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353 | mLoadMeshes,
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354 | fi);
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355 | delete parser;
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356 | }
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357 | else if (strstr(filename.c_str(), ".obj"))
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358 | {
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359 | // hack: load binary dump
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360 | string binFile = ReplaceSuffix(filename, ".obj", ".bin");
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361 |
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362 | if (!mLoadMeshes)
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363 | {
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364 | result = LoadBinaryObj(binFile, mSceneGraph->GetRoot(), fi);
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365 | }
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366 |
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367 | if (!result)
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368 | {
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369 | cout << "no binary dump available or loading full meshes, parsing file" << endl;
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370 | parser = new ObjParser;
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371 |
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372 | result = parser->ParseFile(filename,
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373 | mSceneGraph->GetRoot(),
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374 | mLoadMeshes,
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375 | fi);
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376 |
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377 | // only works for triangles
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378 | if (!mLoadMeshes)
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379 | {
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380 | cout << "exporting binary obj to " << binFile << "... " << endl;
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381 | ExportBinaryObj(binFile, mSceneGraph->GetRoot());
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382 | cout << "finished" << endl;
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383 | }
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384 |
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385 | delete parser;
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386 | }
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387 | else if (0)
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388 | {
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389 | ExportBinaryObj("../data/test.bin", mSceneGraph->GetRoot());
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390 | }
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391 | }
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392 | else
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393 | {
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394 | parser = new UnigraphicsParser;
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395 | result = parser->ParseFile(filename,
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396 | mSceneGraph->GetRoot(),
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397 | mLoadMeshes,
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398 | fi);
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399 | delete parser;
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400 | }
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401 |
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402 | cout << filename << endl;
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403 | }
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404 | else
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405 | {
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406 | vector<string>::const_iterator fit, fit_end = filenames.end();
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407 |
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408 | for (fit = filenames.begin(); fit != fit_end; ++ fit)
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409 | {
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410 | const string filename = *fit;
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411 |
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412 | cout << "parsing file " << filename.c_str() << endl;
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413 | if (strstr(filename.c_str(), ".x3d"))
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414 | parser = new X3dParser;
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415 | else
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416 | parser = new UnigraphicsParser;
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417 |
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418 | SceneGraphNode *node = new SceneGraphNode();
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419 | const bool success = parser->ParseFile(
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420 | filename,
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421 | node,
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422 | mLoadMeshes,
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423 | fi);
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424 |
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425 | if (success)
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426 | {
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427 | mSceneGraph->GetRoot()->mChildren.push_back(node);
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428 | result = true; // at least one file parsed
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429 | }
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430 |
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431 | delete parser;
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432 | }
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433 | }
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434 |
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435 | if (result)
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436 | {
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437 | // HACK
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438 | if (ADDITIONAL_GEOMETRY_HACK)
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439 | AddGeometry(mSceneGraph);
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440 |
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441 | mSceneGraph->AssignObjectIds();
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442 |
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443 | int intersectables, faces;
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444 | mSceneGraph->GetStatistics(intersectables, faces);
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445 |
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446 | cout<<filename<<" parsed successfully."<<endl;
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447 | cout<<"#NUM_OBJECTS (Total numner of objects)\n"<<intersectables<<endl;
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448 | cout<<"#NUM_FACES (Total numner of faces)\n"<<faces<<endl;
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449 | mSceneGraph->CollectObjects(&mObjects);
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450 | mSceneGraph->GetRoot()->UpdateBox();
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451 |
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452 | if (0)
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453 | {
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454 | Exporter *exporter = Exporter::GetExporter("testload.x3d");
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455 | if (exporter)
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456 | {
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457 | exporter->ExportGeometry(mObjects);
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458 | delete exporter;
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459 | }
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460 | }
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461 | }
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462 |
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463 | return result;
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464 | }
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465 |
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466 | bool
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467 | Preprocessor::ExportPreprocessedData(const string filename)
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468 | {
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469 | mViewCellsManager->ExportViewCells(filename, true, mObjects);
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470 | return true;
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471 | }
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472 |
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473 |
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474 | bool
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475 | Preprocessor::PostProcessVisibility()
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476 | {
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477 |
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478 | if (mApplyVisibilityFilter || mApplyVisibilitySpatialFilter) {
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---|
479 | cout<<"Applying visibility filter ...";
|
---|
480 | cout<<"filter width = " << mVisibilityFilterWidth << endl;
|
---|
481 |
|
---|
482 | if (!mViewCellsManager)
|
---|
483 | return false;
|
---|
484 |
|
---|
485 | mViewCellsManager->ApplyFilter(mKdTree,
|
---|
486 | mApplyVisibilityFilter ? mVisibilityFilterWidth : -1.0f,
|
---|
487 | mApplyVisibilitySpatialFilter ? mVisibilityFilterWidth : -1.0f);
|
---|
488 | cout << "done." << endl;
|
---|
489 | }
|
---|
490 |
|
---|
491 | // export the preprocessed information to a file
|
---|
492 | if (mExportVisibility)
|
---|
493 | {
|
---|
494 | ExportPreprocessedData(mVisibilityFileName);
|
---|
495 | }
|
---|
496 |
|
---|
497 | return true;
|
---|
498 | }
|
---|
499 |
|
---|
500 |
|
---|
501 | bool
|
---|
502 | Preprocessor::BuildKdTree()
|
---|
503 | {
|
---|
504 | mKdTree = new KdTree;
|
---|
505 |
|
---|
506 | // add mesh instances of the scene graph to the root of the tree
|
---|
507 | KdLeaf *root = (KdLeaf *)mKdTree->GetRoot();
|
---|
508 |
|
---|
509 | mSceneGraph->CollectObjects(&root->mObjects);
|
---|
510 |
|
---|
511 | const long startTime = GetTime();
|
---|
512 | cout << "building kd tree ... " << endl;
|
---|
513 |
|
---|
514 | mKdTree->Construct();
|
---|
515 |
|
---|
516 | cout << "finished kd tree construction in " << TimeDiff(startTime, GetTime()) * 1e-3
|
---|
517 | << " secs " << endl;
|
---|
518 |
|
---|
519 | return true;
|
---|
520 | }
|
---|
521 |
|
---|
522 |
|
---|
523 | void
|
---|
524 | Preprocessor::KdTreeStatistics(ostream &s)
|
---|
525 | {
|
---|
526 | s<<mKdTree->GetStatistics();
|
---|
527 | }
|
---|
528 |
|
---|
529 | void
|
---|
530 | Preprocessor::BspTreeStatistics(ostream &s)
|
---|
531 | {
|
---|
532 | s << mBspTree->GetStatistics();
|
---|
533 | }
|
---|
534 |
|
---|
535 | bool
|
---|
536 | Preprocessor::Export( const string filename,
|
---|
537 | const bool scene,
|
---|
538 | const bool kdtree
|
---|
539 | )
|
---|
540 | {
|
---|
541 | Exporter *exporter = Exporter::GetExporter(filename);
|
---|
542 |
|
---|
543 | if (exporter) {
|
---|
544 | if (2 && scene)
|
---|
545 | exporter->ExportScene(mSceneGraph->GetRoot());
|
---|
546 |
|
---|
547 | if (1 && kdtree) {
|
---|
548 | exporter->SetWireframe();
|
---|
549 | exporter->ExportKdTree(*mKdTree);
|
---|
550 | }
|
---|
551 |
|
---|
552 | delete exporter;
|
---|
553 | return true;
|
---|
554 | }
|
---|
555 |
|
---|
556 | return false;
|
---|
557 | }
|
---|
558 |
|
---|
559 |
|
---|
560 | bool Preprocessor::PrepareViewCells()
|
---|
561 | {
|
---|
562 | ///////
|
---|
563 | //-- parse view cells construction method
|
---|
564 |
|
---|
565 | Environment::GetSingleton()->GetBoolValue("ViewCells.loadFromFile", mLoadViewCells);
|
---|
566 | char buf[100];
|
---|
567 |
|
---|
568 | if (mLoadViewCells)
|
---|
569 | {
|
---|
570 | Environment::GetSingleton()->GetStringValue("ViewCells.filename", buf);
|
---|
571 | cout << "loading view cells from " << buf << endl;
|
---|
572 |
|
---|
573 | mViewCellsManager = ViewCellsManager::LoadViewCells(buf, &mObjects, true, NULL);
|
---|
574 |
|
---|
575 | if (!mViewCellsManager)
|
---|
576 | {
|
---|
577 | return false;
|
---|
578 | }
|
---|
579 | }
|
---|
580 | else
|
---|
581 | {
|
---|
582 | // parse type of view cell container
|
---|
583 | Environment::GetSingleton()->GetStringValue("ViewCells.type", buf);
|
---|
584 | mViewCellsManager = CreateViewCellsManager(buf);
|
---|
585 |
|
---|
586 | // default view space is the extent of the scene
|
---|
587 | AxisAlignedBox3 box = mSceneGraph->GetBox();
|
---|
588 |
|
---|
589 | if (0)
|
---|
590 | {
|
---|
591 | // use a small box outside of the scene
|
---|
592 | box.Scale(Vector3(0.1f,0.5f,0.5f));
|
---|
593 | box.Translate(Vector3(Magnitude(mSceneGraph->GetBox().Size())*0.5f, 0, 0));
|
---|
594 | }
|
---|
595 |
|
---|
596 | mViewCellsManager->SetViewSpaceBox(box);
|
---|
597 |
|
---|
598 | bool loadVcGeometry;
|
---|
599 | Environment::GetSingleton()->GetBoolValue("ViewCells.loadGeometry", loadVcGeometry);
|
---|
600 |
|
---|
601 | bool extrudeBaseTriangles;
|
---|
602 | Environment::GetSingleton()->GetBoolValue("ViewCells.useBaseTrianglesAsGeometry", extrudeBaseTriangles);
|
---|
603 |
|
---|
604 | char vcGeomFilename[100];
|
---|
605 | Environment::GetSingleton()->GetStringValue("ViewCells.geometryFilename", vcGeomFilename);
|
---|
606 |
|
---|
607 | if (loadVcGeometry)
|
---|
608 | {
|
---|
609 | if (mViewCellsManager->GetType() == ViewCellsManager::BSP)
|
---|
610 | {
|
---|
611 | if (!mViewCellsManager->LoadViewCellsGeometry(vcGeomFilename, extrudeBaseTriangles))
|
---|
612 | {
|
---|
613 | cerr << "loading view cells geometry failed" << endl;
|
---|
614 | }
|
---|
615 | }
|
---|
616 | else
|
---|
617 | {
|
---|
618 | cerr << "loading view cells geometry is not implemented for this manager" << endl;
|
---|
619 | }
|
---|
620 | }
|
---|
621 | }
|
---|
622 |
|
---|
623 | ////////
|
---|
624 | //-- evaluation of render cost heuristics
|
---|
625 | float objRenderCost = 0, vcOverhead = 0, moveSpeed = 0;
|
---|
626 |
|
---|
627 | Environment::GetSingleton()->GetFloatValue("Simulation.objRenderCost",objRenderCost);
|
---|
628 | Environment::GetSingleton()->GetFloatValue("Simulation.vcOverhead", vcOverhead);
|
---|
629 | Environment::GetSingleton()->GetFloatValue("Simulation.moveSpeed", moveSpeed);
|
---|
630 |
|
---|
631 | mRenderSimulator =
|
---|
632 | new RenderSimulator(mViewCellsManager, objRenderCost, vcOverhead, moveSpeed);
|
---|
633 |
|
---|
634 | mViewCellsManager->SetRenderer(mRenderSimulator);
|
---|
635 |
|
---|
636 | if (mUseGlRenderer || mUseGlDebugger)
|
---|
637 | {
|
---|
638 | // NOTE: render texture should be power of 2 and square
|
---|
639 | // renderer must be initialised
|
---|
640 | // $$matt
|
---|
641 | // renderer = new GlRendererBuffer(1024, 768, mSceneGraph, mViewCellsManager, mKdTree);
|
---|
642 | // renderer->makeCurrent();
|
---|
643 |
|
---|
644 | }
|
---|
645 |
|
---|
646 | mViewCellsManager->SetPreprocessor(this);
|
---|
647 | return true;
|
---|
648 | }
|
---|
649 |
|
---|
650 |
|
---|
651 | bool Preprocessor::ConstructViewCells()
|
---|
652 | {
|
---|
653 | // construct view cells using it's own set of samples
|
---|
654 | mViewCellsManager->Construct(this);
|
---|
655 |
|
---|
656 | // visualizations and statistics
|
---|
657 | Debug << "finished view cells:" << endl;
|
---|
658 | mViewCellsManager->PrintStatistics(Debug);
|
---|
659 |
|
---|
660 | return true;
|
---|
661 | }
|
---|
662 |
|
---|
663 |
|
---|
664 | HierarchyManager *Preprocessor::CreateHierarchyManager(const char *name)
|
---|
665 | {
|
---|
666 | HierarchyManager *hierarchyManager;
|
---|
667 |
|
---|
668 | if (strcmp(name, "osp") == 0)
|
---|
669 | {
|
---|
670 | Debug << "hierarchy manager: osp" << endl;
|
---|
671 | // HACK for testing if per kd evaluation works!!
|
---|
672 | const bool ishack = false;
|
---|
673 | if (ishack)
|
---|
674 | hierarchyManager = new HierarchyManager(mKdTree);
|
---|
675 | else
|
---|
676 | hierarchyManager = new HierarchyManager(HierarchyManager::KD_BASED_OBJ_SUBDIV);
|
---|
677 | }
|
---|
678 | else if (strcmp(name, "bvh") == 0)
|
---|
679 | {
|
---|
680 | Debug << "hierarchy manager: bvh" << endl;
|
---|
681 | hierarchyManager = new HierarchyManager(HierarchyManager::BV_BASED_OBJ_SUBDIV);
|
---|
682 | }
|
---|
683 | else // only view space partition
|
---|
684 | {
|
---|
685 | Debug << "hierarchy manager: obj" << endl;
|
---|
686 | hierarchyManager = new HierarchyManager(HierarchyManager::NO_OBJ_SUBDIV);
|
---|
687 | }
|
---|
688 |
|
---|
689 | return hierarchyManager;
|
---|
690 | }
|
---|
691 |
|
---|
692 |
|
---|
693 | ViewCellsManager *Preprocessor::CreateViewCellsManager(const char *name)
|
---|
694 | {
|
---|
695 | ViewCellsTree *vcTree = new ViewCellsTree;
|
---|
696 |
|
---|
697 | if (strcmp(name, "kdTree") == 0)
|
---|
698 | {
|
---|
699 | mViewCellsManager = new KdViewCellsManager(vcTree, mKdTree);
|
---|
700 | }
|
---|
701 | else if (strcmp(name, "bspTree") == 0)
|
---|
702 | {
|
---|
703 | Debug << "view cell type: Bsp" << endl;
|
---|
704 |
|
---|
705 | mBspTree = new BspTree();
|
---|
706 | mViewCellsManager = new BspViewCellsManager(vcTree, mBspTree);
|
---|
707 | }
|
---|
708 | else if (strcmp(name, "vspBspTree") == 0)
|
---|
709 | {
|
---|
710 | Debug << "view cell type: VspBsp" << endl;
|
---|
711 |
|
---|
712 | mVspBspTree = new VspBspTree();
|
---|
713 | mViewCellsManager = new VspBspViewCellsManager(vcTree, mVspBspTree);
|
---|
714 | }
|
---|
715 | else if (strcmp(name, "vspOspTree") == 0)
|
---|
716 | {
|
---|
717 | Debug << "view cell type: VspOsp" << endl;
|
---|
718 | char buf[100];
|
---|
719 | Environment::GetSingleton()->GetStringValue("Hierarchy.type", buf);
|
---|
720 |
|
---|
721 | HierarchyManager *mHierarchyManager = CreateHierarchyManager(buf);
|
---|
722 | mViewCellsManager = new VspOspViewCellsManager(vcTree, mHierarchyManager);
|
---|
723 | }
|
---|
724 | else if (strcmp(name, "sceneDependent") == 0) //TODO
|
---|
725 | {
|
---|
726 | Debug << "view cell type: Bsp" << endl;
|
---|
727 |
|
---|
728 | mBspTree = new BspTree();
|
---|
729 | mViewCellsManager = new BspViewCellsManager(vcTree, mBspTree);
|
---|
730 | }
|
---|
731 | else
|
---|
732 | {
|
---|
733 | cerr << "Wrong view cells type " << name << "!!!" << endl;
|
---|
734 | exit(1);
|
---|
735 | }
|
---|
736 |
|
---|
737 | return mViewCellsManager;
|
---|
738 | }
|
---|
739 |
|
---|
740 |
|
---|
741 | // use ascii format to store rays
|
---|
742 | #define USE_ASCII 0
|
---|
743 |
|
---|
744 |
|
---|
745 | static inline bool ilt(Intersectable *obj1, Intersectable *obj2)
|
---|
746 | {
|
---|
747 | return obj1->mId < obj2->mId;
|
---|
748 | }
|
---|
749 |
|
---|
750 |
|
---|
751 | bool Preprocessor::LoadKdTree(const string filename)
|
---|
752 | {
|
---|
753 | mKdTree = new KdTree();
|
---|
754 |
|
---|
755 | return mKdTree->LoadBinTree(filename.c_str(), mObjects);
|
---|
756 | }
|
---|
757 |
|
---|
758 |
|
---|
759 | bool Preprocessor::ExportKdTree(const string filename)
|
---|
760 | {
|
---|
761 | return mKdTree->ExportBinTree(filename.c_str());
|
---|
762 | }
|
---|
763 |
|
---|
764 |
|
---|
765 | bool Preprocessor::LoadSamples(VssRayContainer &samples,
|
---|
766 | ObjectContainer &objects) const
|
---|
767 | {
|
---|
768 | std::stable_sort(objects.begin(), objects.end(), ilt);
|
---|
769 | char fileName[100];
|
---|
770 | Environment::GetSingleton()->GetStringValue("Preprocessor.samplesFilename", fileName);
|
---|
771 |
|
---|
772 | Vector3 origin, termination;
|
---|
773 | // HACK: needed only for lower_bound algorithm to find the
|
---|
774 | // intersected objects
|
---|
775 | MeshInstance sObj(NULL);
|
---|
776 | MeshInstance tObj(NULL);
|
---|
777 |
|
---|
778 | #if USE_ASCII
|
---|
779 | ifstream samplesIn(fileName);
|
---|
780 | if (!samplesIn.is_open())
|
---|
781 | return false;
|
---|
782 |
|
---|
783 | string buf;
|
---|
784 | while (!(getline(samplesIn, buf)).eof())
|
---|
785 | {
|
---|
786 | sscanf(buf.c_str(), "%f %f %f %f %f %f %d %d",
|
---|
787 | &origin.x, &origin.y, &origin.z,
|
---|
788 | &termination.x, &termination.y, &termination.z,
|
---|
789 | &(sObj.mId), &(tObj.mId));
|
---|
790 |
|
---|
791 | Intersectable *sourceObj = NULL;
|
---|
792 | Intersectable *termObj = NULL;
|
---|
793 |
|
---|
794 | if (sObj.mId >= 0)
|
---|
795 | {
|
---|
796 | ObjectContainer::iterator oit =
|
---|
797 | lower_bound(objects.begin(), objects.end(), &sObj, ilt);
|
---|
798 | sourceObj = *oit;
|
---|
799 | }
|
---|
800 |
|
---|
801 | if (tObj.mId >= 0)
|
---|
802 | {
|
---|
803 | ObjectContainer::iterator oit =
|
---|
804 | lower_bound(objects.begin(), objects.end(), &tObj, ilt);
|
---|
805 | termObj = *oit;
|
---|
806 | }
|
---|
807 |
|
---|
808 | samples.push_back(new VssRay(origin, termination, sourceObj, termObj));
|
---|
809 | }
|
---|
810 | #else
|
---|
811 | ifstream samplesIn(fileName, ios::binary);
|
---|
812 | if (!samplesIn.is_open())
|
---|
813 | return false;
|
---|
814 |
|
---|
815 | while (1)
|
---|
816 | {
|
---|
817 | samplesIn.read(reinterpret_cast<char *>(&origin), sizeof(Vector3));
|
---|
818 | samplesIn.read(reinterpret_cast<char *>(&termination), sizeof(Vector3));
|
---|
819 | samplesIn.read(reinterpret_cast<char *>(&(sObj.mId)), sizeof(int));
|
---|
820 | samplesIn.read(reinterpret_cast<char *>(&(tObj.mId)), sizeof(int));
|
---|
821 |
|
---|
822 | if (samplesIn.eof())
|
---|
823 | break;
|
---|
824 |
|
---|
825 | Intersectable *sourceObj = NULL;
|
---|
826 | Intersectable *termObj = NULL;
|
---|
827 |
|
---|
828 | if (sObj.mId >= 0)
|
---|
829 | {
|
---|
830 | ObjectContainer::iterator oit =
|
---|
831 | lower_bound(objects.begin(), objects.end(), &sObj, ilt);
|
---|
832 | sourceObj = *oit;
|
---|
833 | }
|
---|
834 |
|
---|
835 | if (tObj.mId >= 0)
|
---|
836 | {
|
---|
837 | ObjectContainer::iterator oit =
|
---|
838 | lower_bound(objects.begin(), objects.end(), &tObj, ilt);
|
---|
839 | termObj = *oit;
|
---|
840 | }
|
---|
841 |
|
---|
842 | samples.push_back(new VssRay(origin, termination, sourceObj, termObj));
|
---|
843 | }
|
---|
844 |
|
---|
845 | #endif
|
---|
846 | samplesIn.close();
|
---|
847 |
|
---|
848 | return true;
|
---|
849 | }
|
---|
850 |
|
---|
851 |
|
---|
852 | bool Preprocessor::ExportSamples(const VssRayContainer &samples) const
|
---|
853 | {
|
---|
854 | char fileName[100];
|
---|
855 | Environment::GetSingleton()->GetStringValue("Preprocessor.samplesFilename", fileName);
|
---|
856 |
|
---|
857 |
|
---|
858 | VssRayContainer::const_iterator it, it_end = samples.end();
|
---|
859 |
|
---|
860 | #if USE_ASCII
|
---|
861 | ofstream samplesOut(fileName);
|
---|
862 | if (!samplesOut.is_open())
|
---|
863 | return false;
|
---|
864 |
|
---|
865 | for (it = samples.begin(); it != it_end; ++ it)
|
---|
866 | {
|
---|
867 | VssRay *ray = *it;
|
---|
868 | int sourceid = ray->mOriginObject ? ray->mOriginObject->mId : -1;
|
---|
869 | int termid = ray->mTerminationObject ? ray->mTerminationObject->mId : -1;
|
---|
870 |
|
---|
871 | samplesOut << ray->GetOrigin().x << " " << ray->GetOrigin().y << " " << ray->GetOrigin().z << " "
|
---|
872 | << ray->GetTermination().x << " " << ray->GetTermination().y << " " << ray->GetTermination().z << " "
|
---|
873 | << sourceid << " " << termid << "\n";
|
---|
874 | }
|
---|
875 | #else
|
---|
876 | ofstream samplesOut(fileName, ios::binary);
|
---|
877 | if (!samplesOut.is_open())
|
---|
878 | return false;
|
---|
879 |
|
---|
880 | for (it = samples.begin(); it != it_end; ++ it)
|
---|
881 | {
|
---|
882 | VssRay *ray = *it;
|
---|
883 | Vector3 origin(ray->GetOrigin());
|
---|
884 | Vector3 termination(ray->GetTermination());
|
---|
885 |
|
---|
886 | int sourceid = ray->mOriginObject ? ray->mOriginObject->mId : -1;
|
---|
887 | int termid = ray->mTerminationObject ? ray->mTerminationObject->mId : -1;
|
---|
888 |
|
---|
889 | samplesOut.write(reinterpret_cast<char *>(&origin), sizeof(Vector3));
|
---|
890 | samplesOut.write(reinterpret_cast<char *>(&termination), sizeof(Vector3));
|
---|
891 | samplesOut.write(reinterpret_cast<char *>(&sourceid), sizeof(int));
|
---|
892 | samplesOut.write(reinterpret_cast<char *>(&termid), sizeof(int));
|
---|
893 | }
|
---|
894 | #endif
|
---|
895 | samplesOut.close();
|
---|
896 |
|
---|
897 | return true;
|
---|
898 | }
|
---|
899 |
|
---|
900 | bool Preprocessor::GenerateRays(const int number,
|
---|
901 | const int sampleType,
|
---|
902 | SimpleRayContainer &rays)
|
---|
903 | {
|
---|
904 | const int startSize = (int)rays.size();
|
---|
905 | SamplingStrategy *strategy = GenerateSamplingStrategy(sampleType);
|
---|
906 |
|
---|
907 | if (!strategy)
|
---|
908 | {
|
---|
909 | return false;
|
---|
910 | }
|
---|
911 |
|
---|
912 | for (int i=0; (int)rays.size() - startSize < number; ++ i)
|
---|
913 | {
|
---|
914 | SimpleRay newRay;
|
---|
915 |
|
---|
916 | if (strategy->GenerateSample(newRay))
|
---|
917 | {
|
---|
918 | #if 1
|
---|
919 | rays.AddRay(newRay);
|
---|
920 | #else
|
---|
921 | GenerateRayBundle(rays, newRay, 16, 0);
|
---|
922 | #endif
|
---|
923 | }
|
---|
924 | }
|
---|
925 |
|
---|
926 | delete strategy;
|
---|
927 | return true;
|
---|
928 | }
|
---|
929 |
|
---|
930 |
|
---|
931 | SamplingStrategy *Preprocessor::GenerateSamplingStrategy(const int strategyId) const
|
---|
932 | {
|
---|
933 | switch (strategyId)
|
---|
934 | {
|
---|
935 | case SamplingStrategy::OBJECT_BASED_DISTRIBUTION:
|
---|
936 | return new ObjectBasedDistribution(*this);
|
---|
937 | case SamplingStrategy::OBJECT_DIRECTION_BASED_DISTRIBUTION:
|
---|
938 | return new ObjectDirectionBasedDistribution(*this);
|
---|
939 | case SamplingStrategy::DIRECTION_BASED_DISTRIBUTION:
|
---|
940 | return new DirectionBasedDistribution(*this);
|
---|
941 | case SamplingStrategy::DIRECTION_BOX_BASED_DISTRIBUTION:
|
---|
942 | return new DirectionBoxBasedDistribution(*this);
|
---|
943 | case SamplingStrategy::SPATIAL_BOX_BASED_DISTRIBUTION:
|
---|
944 | return new SpatialBoxBasedDistribution(*this);
|
---|
945 | //case OBJECTS_INTERIOR_DISTRIBUTION:
|
---|
946 | // return new ObjectsInteriorDistribution(*this);
|
---|
947 | default: // no valid strategy
|
---|
948 | Debug << "warning: no valid sampling strategy" << endl;
|
---|
949 | return NULL;
|
---|
950 | }
|
---|
951 |
|
---|
952 | return NULL; // should never come here
|
---|
953 | }
|
---|
954 |
|
---|
955 |
|
---|
956 | bool Preprocessor::InitRayCast(const string externKdTree, const string internKdTree)
|
---|
957 | {
|
---|
958 | // always try to load the kd tree
|
---|
959 | cout << "loading kd tree file " << internKdTree << " ... " << endl;
|
---|
960 |
|
---|
961 | if (!LoadKdTree(internKdTree))
|
---|
962 | {
|
---|
963 | cout << "error loading kd tree with filename " << internKdTree << ", rebuilding it instead ... " << endl;
|
---|
964 | // build new kd tree from scene geometry
|
---|
965 | BuildKdTree();
|
---|
966 |
|
---|
967 | // export kd tree?
|
---|
968 | const long startTime = GetTime();
|
---|
969 | cout << "exporting kd tree ... ";
|
---|
970 |
|
---|
971 | if (!ExportKdTree(internKdTree))
|
---|
972 | {
|
---|
973 | cout << " error exporting kd tree with filename " << internKdTree << endl;
|
---|
974 | }
|
---|
975 | else
|
---|
976 | {
|
---|
977 | cout << "finished in " << TimeDiff(startTime, GetTime()) * 1e-3 << " secs" << endl;
|
---|
978 | }
|
---|
979 | }
|
---|
980 |
|
---|
981 | KdTreeStatistics(cout);
|
---|
982 | cout << mKdTree->GetBox() << endl;
|
---|
983 |
|
---|
984 | if (0)
|
---|
985 | {
|
---|
986 | Exporter *exporter = Exporter::GetExporter("dummykd.x3d");
|
---|
987 |
|
---|
988 | if (exporter)
|
---|
989 | {
|
---|
990 | exporter->ExportKdTree(*mKdTree, true);
|
---|
991 | delete exporter;
|
---|
992 | }
|
---|
993 | }
|
---|
994 |
|
---|
995 | int rayCastMethod;
|
---|
996 | Environment::GetSingleton()->GetIntValue("Preprocessor.rayCastMethod", rayCastMethod);
|
---|
997 |
|
---|
998 | if (rayCastMethod == 0)
|
---|
999 | {
|
---|
1000 | mRayCaster = new InternalRayCaster(*this, mKdTree);
|
---|
1001 | cout << "ray cast method: internal" << endl;
|
---|
1002 | }
|
---|
1003 | else
|
---|
1004 | {
|
---|
1005 | #ifdef GTP_INTERNAL
|
---|
1006 | mRayCaster = new IntelRayCaster(*this, externKdTree);
|
---|
1007 | cout << "ray cast method: intel" << endl;
|
---|
1008 | #endif
|
---|
1009 | }
|
---|
1010 |
|
---|
1011 | return true;
|
---|
1012 | }
|
---|
1013 |
|
---|
1014 |
|
---|
1015 | void
|
---|
1016 | Preprocessor::CastRays(
|
---|
1017 | SimpleRayContainer &rays,
|
---|
1018 | VssRayContainer &vssRays,
|
---|
1019 | const bool castDoubleRays,
|
---|
1020 | const bool pruneInvalidRays
|
---|
1021 | )
|
---|
1022 | {
|
---|
1023 | const long t1 = GetTime();
|
---|
1024 |
|
---|
1025 | for (int i = 0; i < (int)rays.size();)
|
---|
1026 | {
|
---|
1027 | if (i + 16 < (int)rays.size())
|
---|
1028 | {
|
---|
1029 | mRayCaster->CastRays16(
|
---|
1030 | i,
|
---|
1031 | rays,
|
---|
1032 | vssRays,
|
---|
1033 | mViewCellsManager->GetViewSpaceBox(),
|
---|
1034 | castDoubleRays,
|
---|
1035 | pruneInvalidRays);
|
---|
1036 | i += 16;
|
---|
1037 | }
|
---|
1038 | else
|
---|
1039 | {
|
---|
1040 | mRayCaster->CastRay(
|
---|
1041 | rays[i],
|
---|
1042 | vssRays,
|
---|
1043 | mViewCellsManager->GetViewSpaceBox(),
|
---|
1044 | castDoubleRays,
|
---|
1045 | pruneInvalidRays);
|
---|
1046 | i ++;
|
---|
1047 | }
|
---|
1048 | if (i % 10000 == 0)
|
---|
1049 | cout<<"\r"<<i<<"/"<<(int)rays.size()<<"\r";
|
---|
1050 | }
|
---|
1051 | cout<<endl;
|
---|
1052 |
|
---|
1053 | long t2 = GetTime();
|
---|
1054 |
|
---|
1055 | #if SHOW_RAYCAST_TIMING
|
---|
1056 | if (castDoubleRays)
|
---|
1057 | cout << 2 * rays.size() / (1e3f * TimeDiff(t1, t2)) << "M rays/s" << endl;
|
---|
1058 | else
|
---|
1059 | cout << rays.size() / (1e3f * TimeDiff(t1, t2)) << "M rays/s" << endl;
|
---|
1060 | #endif
|
---|
1061 | }
|
---|
1062 |
|
---|
1063 |
|
---|
1064 | bool Preprocessor::GenerateRayBundle(SimpleRayContainer &rayBundle,
|
---|
1065 | const SimpleRay &mainRay,
|
---|
1066 | const int number,
|
---|
1067 | const int pertubType) const
|
---|
1068 | {
|
---|
1069 | rayBundle.push_back(mainRay);
|
---|
1070 |
|
---|
1071 | const float pertubOrigin = 0.0f;
|
---|
1072 | const float pertubDir = 0.2f;
|
---|
1073 |
|
---|
1074 | for (int i = 0; i < number - 1; ++ i)
|
---|
1075 | {
|
---|
1076 | Vector3 pertub;
|
---|
1077 |
|
---|
1078 | pertub.x = RandomValue(0.0f, pertubDir);
|
---|
1079 | pertub.y = RandomValue(0.0f, pertubDir);
|
---|
1080 | pertub.z = RandomValue(0.0f, pertubDir);
|
---|
1081 | const Vector3 newDir = mainRay.mDirection + pertub;
|
---|
1082 | //const Vector3 newDir = mainRay.mDirection;
|
---|
1083 |
|
---|
1084 | pertub.x = RandomValue(0.0f, pertubOrigin);
|
---|
1085 | pertub.y = RandomValue(0.0f, pertubOrigin);
|
---|
1086 | pertub.z = RandomValue(0.0f, pertubOrigin);
|
---|
1087 | const Vector3 newOrigin = mainRay.mOrigin + pertub;
|
---|
1088 | //const Vector3 newOrigin = mainRay.mOrigin;
|
---|
1089 |
|
---|
1090 | rayBundle.push_back(SimpleRay(newOrigin, newDir, 0));
|
---|
1091 | }
|
---|
1092 |
|
---|
1093 | return true;
|
---|
1094 | }
|
---|
1095 |
|
---|
1096 |
|
---|
1097 | void Preprocessor::SetupRay(Ray &ray,
|
---|
1098 | const Vector3 &point,
|
---|
1099 | const Vector3 &direction
|
---|
1100 | ) const
|
---|
1101 | {
|
---|
1102 | ray.Clear();
|
---|
1103 | // do not store anything else then intersections at the ray
|
---|
1104 | ray.Init(point, direction, Ray::LOCAL_RAY);
|
---|
1105 |
|
---|
1106 | }
|
---|
1107 |
|
---|
1108 |
|
---|
1109 | }
|
---|