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
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227 | Preprocessor::LoadScene(const string filename)
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228 | {
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229 | // use leaf nodes of the original spatial hierarchy as occludees
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230 | mSceneGraph = new SceneGraph;
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231 |
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232 | Parser *parser;
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233 | vector<string> filenames;
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234 | const int files = SplitFilenames(filename, filenames);
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235 | cout << "number of input files: " << files << endl;
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236 | bool result = false;
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237 |
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238 | // root for different files
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239 | mSceneGraph->SetRoot(new SceneGraphNode());
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240 |
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241 | // intel ray caster can only trace triangles
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242 | int rayCastMethod;
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243 | Environment::GetSingleton()->GetIntValue("Preprocessor.rayCastMethod", rayCastMethod);
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244 | vector<FaceParentInfo> *fi = (rayCastMethod == RayCaster::INTEL_RAYCASTER) ?
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245 | &mFaceParents : NULL;
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246 |
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247 | if (files == 1) {
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248 |
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249 | if (strstr(filename.c_str(), ".x3d"))
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250 | parser = new X3dParser;
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251 | else
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252 | if (strstr(filename.c_str(), ".ply") || strstr(filename.c_str(), ".plb"))
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253 | parser = new PlyParser;
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254 | else if (strstr(filename.c_str(), ".obj"))
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255 | parser = new ObjParser;
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256 | else
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257 | parser = new UnigraphicsParser;
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258 |
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259 | cout << filename << endl;
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260 |
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261 | result = parser->ParseFile(
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262 | filename,
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263 | mSceneGraph->GetRoot(),
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264 | mLoadMeshes,
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265 | fi);
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266 |
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267 | delete parser;
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268 |
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269 | }
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270 | else {
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271 | vector<string>::const_iterator fit, fit_end = filenames.end();
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272 |
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273 | for (fit = filenames.begin(); fit != fit_end; ++ fit)
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274 | {
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275 | const string filename = *fit;
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276 |
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277 | cout << "parsing file " << filename.c_str() << endl;
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278 | if (strstr(filename.c_str(), ".x3d"))
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279 | parser = new X3dParser;
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280 | else
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281 | parser = new UnigraphicsParser;
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282 |
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283 | SceneGraphNode *node = new SceneGraphNode();
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284 | const bool success = parser->ParseFile(
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285 | filename,
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286 | node,
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287 | mLoadMeshes,
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288 | fi);
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289 |
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290 | if (success)
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291 | {
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292 | mSceneGraph->GetRoot()->mChildren.push_back(node);
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293 | result = true; // at least one file parsed
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294 | }
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295 |
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296 | delete parser;
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297 | }
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298 | }
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299 |
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300 | if (result)
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301 | {
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302 | // HACK
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303 | if (ADDITIONAL_GEOMETRY_HACK)
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304 | AddGeometry(mSceneGraph);
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305 |
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306 | mSceneGraph->AssignObjectIds();
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307 |
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308 | int intersectables, faces;
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309 | mSceneGraph->GetStatistics(intersectables, faces);
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310 |
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311 | cout<<filename<<" parsed successfully."<<endl;
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312 | cout<<"#NUM_OBJECTS (Total numner of objects)\n"<<intersectables<<endl;
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313 | cout<<"#NUM_FACES (Total numner of faces)\n"<<faces<<endl;
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314 | mSceneGraph->CollectObjects(&mObjects);
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315 | mSceneGraph->GetRoot()->UpdateBox();
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316 |
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317 | if (0)
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318 | {
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319 | Exporter *exporter = Exporter::GetExporter("testload.x3d");
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320 | if (exporter)
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321 | {
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322 | exporter->ExportGeometry(mObjects);
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323 | delete exporter;
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324 | }
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325 | }
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326 | }
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327 |
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328 | return result;
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329 | }
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330 |
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331 | bool
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332 | Preprocessor::ExportPreprocessedData(const string filename)
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333 | {
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334 | mViewCellsManager->ExportViewCells(filename, true, mObjects);
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335 | return true;
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336 | }
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337 |
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338 |
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339 | bool
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340 | Preprocessor::PostProcessVisibility()
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341 | {
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342 |
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343 | if (mApplyVisibilityFilter || mApplyVisibilitySpatialFilter) {
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344 | cout<<"Applying visibility filter ...";
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345 | cout<<"filter width = " << mVisibilityFilterWidth << endl;
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346 |
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347 | if (!mViewCellsManager)
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348 | return false;
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349 |
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350 | mViewCellsManager->ApplyFilter(mKdTree,
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351 | mApplyVisibilityFilter ? mVisibilityFilterWidth : -1.0f,
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352 | mApplyVisibilitySpatialFilter ? mVisibilityFilterWidth : -1.0f);
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353 | cout << "done." << endl;
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354 | }
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355 |
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356 | // export the preprocessed information to a file
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357 | if (mExportVisibility)
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358 | {
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359 | ExportPreprocessedData(mVisibilityFileName);
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360 | }
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361 |
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362 | return true;
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363 | }
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364 |
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365 |
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366 | bool
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367 | Preprocessor::BuildKdTree()
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368 | {
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369 | mKdTree = new KdTree;
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370 |
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371 | // add mesh instances of the scene graph to the root of the tree
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372 | KdLeaf *root = (KdLeaf *)mKdTree->GetRoot();
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373 |
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374 | mSceneGraph->CollectObjects(&root->mObjects);
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375 |
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376 | const long startTime = GetTime();
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377 | cout << "building kd tree ... " << endl;
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378 |
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379 | mKdTree->Construct();
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380 |
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381 | cout << "finished kd tree construction in " << TimeDiff(startTime, GetTime()) * 1e-3
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382 | << " secs " << endl;
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383 |
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384 | return true;
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385 | }
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386 |
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387 |
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388 | void
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389 | Preprocessor::KdTreeStatistics(ostream &s)
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390 | {
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391 | s<<mKdTree->GetStatistics();
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392 | }
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393 |
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394 | void
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395 | Preprocessor::BspTreeStatistics(ostream &s)
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396 | {
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397 | s << mBspTree->GetStatistics();
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398 | }
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399 |
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400 | bool
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401 | Preprocessor::Export( const string filename,
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402 | const bool scene,
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403 | const bool kdtree
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404 | )
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405 | {
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406 | Exporter *exporter = Exporter::GetExporter(filename);
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407 |
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408 | if (exporter) {
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409 | if (2 && scene)
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410 | exporter->ExportScene(mSceneGraph->GetRoot());
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411 |
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412 | if (1 && kdtree) {
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413 | exporter->SetWireframe();
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414 | exporter->ExportKdTree(*mKdTree);
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415 | }
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416 |
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417 | delete exporter;
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418 | return true;
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419 | }
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420 |
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421 | return false;
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422 | }
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423 |
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424 |
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425 | bool Preprocessor::PrepareViewCells()
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426 | {
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427 | ///////
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428 | //-- parse view cells construction method
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429 |
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430 | Environment::GetSingleton()->GetBoolValue("ViewCells.loadFromFile", mLoadViewCells);
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431 | char buf[100];
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432 |
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433 | if (mLoadViewCells)
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434 | {
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435 | Environment::GetSingleton()->GetStringValue("ViewCells.filename", buf);
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436 | cout << "loading view cells from " << buf << endl;
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437 |
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438 | mViewCellsManager = ViewCellsManager::LoadViewCells(buf, &mObjects, true, NULL);
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439 |
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440 | if (!mViewCellsManager)
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441 | {
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442 | return false;
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443 | }
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444 | }
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445 | else
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446 | {
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447 | // parse type of view cell container
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448 | Environment::GetSingleton()->GetStringValue("ViewCells.type", buf);
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449 | mViewCellsManager = CreateViewCellsManager(buf);
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450 |
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451 | // default view space is the extent of the scene
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452 | AxisAlignedBox3 box = mSceneGraph->GetBox();
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453 |
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454 | if (0)
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455 | {
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456 | // use a small box outside of the scene
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457 | box.Scale(Vector3(0.1f,0.5f,0.5f));
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458 | box.Translate(Vector3(Magnitude(mSceneGraph->GetBox().Size())*0.5f, 0, 0));
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459 | }
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460 |
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461 | mViewCellsManager->SetViewSpaceBox(box);
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462 |
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463 | bool loadVcGeometry;
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464 | Environment::GetSingleton()->GetBoolValue("ViewCells.loadGeometry", loadVcGeometry);
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465 |
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466 | bool extrudeBaseTriangles;
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467 | Environment::GetSingleton()->GetBoolValue("ViewCells.useBaseTrianglesAsGeometry", extrudeBaseTriangles);
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468 |
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469 | char vcGeomFilename[100];
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470 | Environment::GetSingleton()->GetStringValue("ViewCells.geometryFilename", vcGeomFilename);
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471 |
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472 | if (mViewCellsManager->GetType() == ViewCellsManager::BSP)
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473 | {
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474 | if (!mViewCellsManager->LoadViewCellsGeometry(vcGeomFilename, extrudeBaseTriangles))
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475 | {
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476 | cerr << "loading view cells geometry failed" << endl;
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477 | }
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478 | }
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479 | else
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480 | {
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481 | cerr << "loading view cells geometry is not implemented for this manager" << endl;
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482 | }
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483 | }
|
---|
484 |
|
---|
485 | ////////
|
---|
486 | //-- evaluation of render cost heuristics
|
---|
487 | float objRenderCost = 0, vcOverhead = 0, moveSpeed = 0;
|
---|
488 |
|
---|
489 | Environment::GetSingleton()->GetFloatValue("Simulation.objRenderCost",objRenderCost);
|
---|
490 | Environment::GetSingleton()->GetFloatValue("Simulation.vcOverhead", vcOverhead);
|
---|
491 | Environment::GetSingleton()->GetFloatValue("Simulation.moveSpeed", moveSpeed);
|
---|
492 |
|
---|
493 | mRenderSimulator =
|
---|
494 | new RenderSimulator(mViewCellsManager, objRenderCost, vcOverhead, moveSpeed);
|
---|
495 |
|
---|
496 | mViewCellsManager->SetRenderer(mRenderSimulator);
|
---|
497 |
|
---|
498 | if (mUseGlRenderer || mUseGlDebugger)
|
---|
499 | {
|
---|
500 | // NOTE: render texture should be power of 2 and square
|
---|
501 | // renderer must be initialised
|
---|
502 | // $$matt
|
---|
503 | // renderer = new GlRendererBuffer(1024, 768, mSceneGraph, mViewCellsManager, mKdTree);
|
---|
504 | // renderer->makeCurrent();
|
---|
505 |
|
---|
506 | }
|
---|
507 |
|
---|
508 | mViewCellsManager->SetPreprocessor(this);
|
---|
509 | return true;
|
---|
510 | }
|
---|
511 |
|
---|
512 |
|
---|
513 | bool Preprocessor::ConstructViewCells()
|
---|
514 | {
|
---|
515 | // construct view cells using it's own set of samples
|
---|
516 | mViewCellsManager->Construct(this);
|
---|
517 |
|
---|
518 | // visualizations and statistics
|
---|
519 | Debug << "finished view cells:" << endl;
|
---|
520 | mViewCellsManager->PrintStatistics(Debug);
|
---|
521 |
|
---|
522 | return true;
|
---|
523 | }
|
---|
524 |
|
---|
525 |
|
---|
526 | HierarchyManager *Preprocessor::CreateHierarchyManager(const char *name)
|
---|
527 | {
|
---|
528 | HierarchyManager *hierarchyManager;
|
---|
529 |
|
---|
530 | if (strcmp(name, "osp") == 0)
|
---|
531 | {
|
---|
532 | Debug << "hierarchy manager: osp" << endl;
|
---|
533 | // HACK for testing if per kd evaluation works!!
|
---|
534 | const bool ishack = false;
|
---|
535 | if (ishack)
|
---|
536 | hierarchyManager = new HierarchyManager(mKdTree);
|
---|
537 | else
|
---|
538 | hierarchyManager = new HierarchyManager(HierarchyManager::KD_BASED_OBJ_SUBDIV);
|
---|
539 | }
|
---|
540 | else if (strcmp(name, "bvh") == 0)
|
---|
541 | {
|
---|
542 | Debug << "hierarchy manager: bvh" << endl;
|
---|
543 | hierarchyManager = new HierarchyManager(HierarchyManager::BV_BASED_OBJ_SUBDIV);
|
---|
544 | }
|
---|
545 | else // only view space partition
|
---|
546 | {
|
---|
547 | Debug << "hierarchy manager: obj" << endl;
|
---|
548 | hierarchyManager = new HierarchyManager(HierarchyManager::NO_OBJ_SUBDIV);
|
---|
549 | }
|
---|
550 |
|
---|
551 | return hierarchyManager;
|
---|
552 | }
|
---|
553 |
|
---|
554 |
|
---|
555 | ViewCellsManager *Preprocessor::CreateViewCellsManager(const char *name)
|
---|
556 | {
|
---|
557 | ViewCellsTree *vcTree = new ViewCellsTree;
|
---|
558 |
|
---|
559 | if (strcmp(name, "kdTree") == 0)
|
---|
560 | {
|
---|
561 | mViewCellsManager = new KdViewCellsManager(vcTree, mKdTree);
|
---|
562 | }
|
---|
563 | else if (strcmp(name, "bspTree") == 0)
|
---|
564 | {
|
---|
565 | Debug << "view cell type: Bsp" << endl;
|
---|
566 |
|
---|
567 | mBspTree = new BspTree();
|
---|
568 | mViewCellsManager = new BspViewCellsManager(vcTree, mBspTree);
|
---|
569 | }
|
---|
570 | else if (strcmp(name, "vspBspTree") == 0)
|
---|
571 | {
|
---|
572 | Debug << "view cell type: VspBsp" << endl;
|
---|
573 |
|
---|
574 | mVspBspTree = new VspBspTree();
|
---|
575 | mViewCellsManager = new VspBspViewCellsManager(vcTree, mVspBspTree);
|
---|
576 | }
|
---|
577 | else if (strcmp(name, "vspOspTree") == 0)
|
---|
578 | {
|
---|
579 | Debug << "view cell type: VspOsp" << endl;
|
---|
580 | char buf[100];
|
---|
581 | Environment::GetSingleton()->GetStringValue("Hierarchy.type", buf);
|
---|
582 |
|
---|
583 | HierarchyManager *mHierarchyManager = CreateHierarchyManager(buf);
|
---|
584 | mViewCellsManager = new VspOspViewCellsManager(vcTree, mHierarchyManager);
|
---|
585 | }
|
---|
586 | else if (strcmp(name, "sceneDependent") == 0) //TODO
|
---|
587 | {
|
---|
588 | Debug << "view cell type: Bsp" << endl;
|
---|
589 |
|
---|
590 | mBspTree = new BspTree();
|
---|
591 | mViewCellsManager = new BspViewCellsManager(vcTree, mBspTree);
|
---|
592 | }
|
---|
593 | else
|
---|
594 | {
|
---|
595 | cerr << "Wrong view cells type " << name << "!!!" << endl;
|
---|
596 | exit(1);
|
---|
597 | }
|
---|
598 |
|
---|
599 | return mViewCellsManager;
|
---|
600 | }
|
---|
601 |
|
---|
602 |
|
---|
603 | // use ascii format to store rays
|
---|
604 | #define USE_ASCII 0
|
---|
605 |
|
---|
606 |
|
---|
607 | static inline bool ilt(Intersectable *obj1, Intersectable *obj2)
|
---|
608 | {
|
---|
609 | return obj1->mId < obj2->mId;
|
---|
610 | }
|
---|
611 |
|
---|
612 |
|
---|
613 | bool Preprocessor::LoadKdTree(const string filename)
|
---|
614 | {
|
---|
615 | mKdTree = new KdTree();
|
---|
616 | return mKdTree->LoadBinTree(filename.c_str(), mObjects);
|
---|
617 | }
|
---|
618 |
|
---|
619 |
|
---|
620 | bool Preprocessor::ExportKdTree(const string filename)
|
---|
621 | {
|
---|
622 | return mKdTree->ExportBinTree(filename.c_str());
|
---|
623 | }
|
---|
624 |
|
---|
625 |
|
---|
626 | bool Preprocessor::LoadSamples(VssRayContainer &samples,
|
---|
627 | ObjectContainer &objects) const
|
---|
628 | {
|
---|
629 | std::stable_sort(objects.begin(), objects.end(), ilt);
|
---|
630 | char fileName[100];
|
---|
631 | Environment::GetSingleton()->GetStringValue("Preprocessor.samplesFilename", fileName);
|
---|
632 |
|
---|
633 | Vector3 origin, termination;
|
---|
634 | // HACK: needed only for lower_bound algorithm to find the
|
---|
635 | // intersected objects
|
---|
636 | MeshInstance sObj(NULL);
|
---|
637 | MeshInstance tObj(NULL);
|
---|
638 |
|
---|
639 | #if USE_ASCII
|
---|
640 | ifstream samplesIn(fileName);
|
---|
641 | if (!samplesIn.is_open())
|
---|
642 | return false;
|
---|
643 |
|
---|
644 | string buf;
|
---|
645 | while (!(getline(samplesIn, buf)).eof())
|
---|
646 | {
|
---|
647 | sscanf(buf.c_str(), "%f %f %f %f %f %f %d %d",
|
---|
648 | &origin.x, &origin.y, &origin.z,
|
---|
649 | &termination.x, &termination.y, &termination.z,
|
---|
650 | &(sObj.mId), &(tObj.mId));
|
---|
651 |
|
---|
652 | Intersectable *sourceObj = NULL;
|
---|
653 | Intersectable *termObj = NULL;
|
---|
654 |
|
---|
655 | if (sObj.mId >= 0)
|
---|
656 | {
|
---|
657 | ObjectContainer::iterator oit =
|
---|
658 | lower_bound(objects.begin(), objects.end(), &sObj, ilt);
|
---|
659 | sourceObj = *oit;
|
---|
660 | }
|
---|
661 |
|
---|
662 | if (tObj.mId >= 0)
|
---|
663 | {
|
---|
664 | ObjectContainer::iterator oit =
|
---|
665 | lower_bound(objects.begin(), objects.end(), &tObj, ilt);
|
---|
666 | termObj = *oit;
|
---|
667 | }
|
---|
668 |
|
---|
669 | samples.push_back(new VssRay(origin, termination, sourceObj, termObj));
|
---|
670 | }
|
---|
671 | #else
|
---|
672 | ifstream samplesIn(fileName, ios::binary);
|
---|
673 | if (!samplesIn.is_open())
|
---|
674 | return false;
|
---|
675 |
|
---|
676 | while (1)
|
---|
677 | {
|
---|
678 | samplesIn.read(reinterpret_cast<char *>(&origin), sizeof(Vector3));
|
---|
679 | samplesIn.read(reinterpret_cast<char *>(&termination), sizeof(Vector3));
|
---|
680 | samplesIn.read(reinterpret_cast<char *>(&(sObj.mId)), sizeof(int));
|
---|
681 | samplesIn.read(reinterpret_cast<char *>(&(tObj.mId)), sizeof(int));
|
---|
682 |
|
---|
683 | if (samplesIn.eof())
|
---|
684 | break;
|
---|
685 |
|
---|
686 | Intersectable *sourceObj = NULL;
|
---|
687 | Intersectable *termObj = NULL;
|
---|
688 |
|
---|
689 | if (sObj.mId >= 0)
|
---|
690 | {
|
---|
691 | ObjectContainer::iterator oit =
|
---|
692 | lower_bound(objects.begin(), objects.end(), &sObj, ilt);
|
---|
693 | sourceObj = *oit;
|
---|
694 | }
|
---|
695 |
|
---|
696 | if (tObj.mId >= 0)
|
---|
697 | {
|
---|
698 | ObjectContainer::iterator oit =
|
---|
699 | lower_bound(objects.begin(), objects.end(), &tObj, ilt);
|
---|
700 | termObj = *oit;
|
---|
701 | }
|
---|
702 |
|
---|
703 | samples.push_back(new VssRay(origin, termination, sourceObj, termObj));
|
---|
704 | }
|
---|
705 |
|
---|
706 | #endif
|
---|
707 | samplesIn.close();
|
---|
708 |
|
---|
709 | return true;
|
---|
710 | }
|
---|
711 |
|
---|
712 |
|
---|
713 | bool Preprocessor::ExportSamples(const VssRayContainer &samples) const
|
---|
714 | {
|
---|
715 | char fileName[100];
|
---|
716 | Environment::GetSingleton()->GetStringValue("Preprocessor.samplesFilename", fileName);
|
---|
717 |
|
---|
718 |
|
---|
719 | VssRayContainer::const_iterator it, it_end = samples.end();
|
---|
720 |
|
---|
721 | #if USE_ASCII
|
---|
722 | ofstream samplesOut(fileName);
|
---|
723 | if (!samplesOut.is_open())
|
---|
724 | return false;
|
---|
725 |
|
---|
726 | for (it = samples.begin(); it != it_end; ++ it)
|
---|
727 | {
|
---|
728 | VssRay *ray = *it;
|
---|
729 | int sourceid = ray->mOriginObject ? ray->mOriginObject->mId : -1;
|
---|
730 | int termid = ray->mTerminationObject ? ray->mTerminationObject->mId : -1;
|
---|
731 |
|
---|
732 | samplesOut << ray->GetOrigin().x << " " << ray->GetOrigin().y << " " << ray->GetOrigin().z << " "
|
---|
733 | << ray->GetTermination().x << " " << ray->GetTermination().y << " " << ray->GetTermination().z << " "
|
---|
734 | << sourceid << " " << termid << "\n";
|
---|
735 | }
|
---|
736 | #else
|
---|
737 | ofstream samplesOut(fileName, ios::binary);
|
---|
738 | if (!samplesOut.is_open())
|
---|
739 | return false;
|
---|
740 |
|
---|
741 | for (it = samples.begin(); it != it_end; ++ it)
|
---|
742 | {
|
---|
743 | VssRay *ray = *it;
|
---|
744 | Vector3 origin(ray->GetOrigin());
|
---|
745 | Vector3 termination(ray->GetTermination());
|
---|
746 |
|
---|
747 | int sourceid = ray->mOriginObject ? ray->mOriginObject->mId : -1;
|
---|
748 | int termid = ray->mTerminationObject ? ray->mTerminationObject->mId : -1;
|
---|
749 |
|
---|
750 | samplesOut.write(reinterpret_cast<char *>(&origin), sizeof(Vector3));
|
---|
751 | samplesOut.write(reinterpret_cast<char *>(&termination), sizeof(Vector3));
|
---|
752 | samplesOut.write(reinterpret_cast<char *>(&sourceid), sizeof(int));
|
---|
753 | samplesOut.write(reinterpret_cast<char *>(&termid), sizeof(int));
|
---|
754 | }
|
---|
755 | #endif
|
---|
756 | samplesOut.close();
|
---|
757 |
|
---|
758 | return true;
|
---|
759 | }
|
---|
760 |
|
---|
761 | bool Preprocessor::GenerateRays(const int number,
|
---|
762 | const int sampleType,
|
---|
763 | SimpleRayContainer &rays)
|
---|
764 | {
|
---|
765 | const int startSize = (int)rays.size();
|
---|
766 | SamplingStrategy *strategy = GenerateSamplingStrategy(sampleType);
|
---|
767 |
|
---|
768 | if (!strategy)
|
---|
769 | {
|
---|
770 | return false;
|
---|
771 | }
|
---|
772 |
|
---|
773 | for (int i=0; (int)rays.size() - startSize < number; ++ i)
|
---|
774 | {
|
---|
775 | SimpleRay newRay;
|
---|
776 |
|
---|
777 | if (strategy->GenerateSample(newRay))
|
---|
778 | {
|
---|
779 | #if 1
|
---|
780 | rays.AddRay(newRay);
|
---|
781 | #else
|
---|
782 | GenerateRayBundle(rays, newRay, 16, 0);
|
---|
783 | #endif
|
---|
784 | }
|
---|
785 | }
|
---|
786 |
|
---|
787 | delete strategy;
|
---|
788 | return true;
|
---|
789 | }
|
---|
790 |
|
---|
791 |
|
---|
792 | SamplingStrategy *Preprocessor::GenerateSamplingStrategy(const int strategyId) const
|
---|
793 | {
|
---|
794 | switch (strategyId)
|
---|
795 | {
|
---|
796 | case SamplingStrategy::OBJECT_BASED_DISTRIBUTION:
|
---|
797 | return new ObjectBasedDistribution(*this);
|
---|
798 | case SamplingStrategy::OBJECT_DIRECTION_BASED_DISTRIBUTION:
|
---|
799 | return new ObjectDirectionBasedDistribution(*this);
|
---|
800 | case SamplingStrategy::DIRECTION_BASED_DISTRIBUTION:
|
---|
801 | return new DirectionBasedDistribution(*this);
|
---|
802 | case SamplingStrategy::DIRECTION_BOX_BASED_DISTRIBUTION:
|
---|
803 | return new DirectionBoxBasedDistribution(*this);
|
---|
804 | case SamplingStrategy::SPATIAL_BOX_BASED_DISTRIBUTION:
|
---|
805 | return new SpatialBoxBasedDistribution(*this);
|
---|
806 | //case OBJECTS_INTERIOR_DISTRIBUTION:
|
---|
807 | // return new ObjectsInteriorDistribution(*this);
|
---|
808 | default: // no valid strategy
|
---|
809 | Debug << "warning: no valid sampling strategy" << endl;
|
---|
810 | return NULL;
|
---|
811 | }
|
---|
812 |
|
---|
813 | return NULL; // should never come here
|
---|
814 | }
|
---|
815 |
|
---|
816 |
|
---|
817 | bool Preprocessor::InitRayCast(const string externKdTree, const string internkdtree)
|
---|
818 | {
|
---|
819 | bool loadKdTree;
|
---|
820 | Environment::GetSingleton()->GetBoolValue("Preprocessor.loadKdTree", loadKdTree);
|
---|
821 |
|
---|
822 | if (!loadKdTree)
|
---|
823 | {
|
---|
824 | //-- build new kd tree from scene geometry
|
---|
825 | BuildKdTree();
|
---|
826 | KdTreeStatistics(cout);
|
---|
827 | }
|
---|
828 | else
|
---|
829 | {
|
---|
830 | const long startTime = GetTime();
|
---|
831 | cout << "loading kd tree file " << internkdtree << " ... ";
|
---|
832 |
|
---|
833 | if (!LoadKdTree(internkdtree))
|
---|
834 | {
|
---|
835 | cout << "error loading kd tree with filename " << internkdtree << ", rebuilding it instead ..." << endl;
|
---|
836 |
|
---|
837 | BuildKdTree();
|
---|
838 | KdTreeStatistics(cout);
|
---|
839 | }
|
---|
840 |
|
---|
841 | cout << "finished in " << TimeDiff(startTime, GetTime()) * 1e-3 << " secs" << endl;
|
---|
842 |
|
---|
843 | if (0)
|
---|
844 | {
|
---|
845 | Exporter *exporter = Exporter::GetExporter("dummykd.x3d");
|
---|
846 |
|
---|
847 | if (exporter)
|
---|
848 | {
|
---|
849 | exporter->ExportKdTree(*mKdTree, true);
|
---|
850 | delete exporter;
|
---|
851 | }
|
---|
852 | }
|
---|
853 | }
|
---|
854 |
|
---|
855 | int rayCastMethod;
|
---|
856 | Environment::GetSingleton()->GetIntValue("Preprocessor.rayCastMethod", rayCastMethod);
|
---|
857 |
|
---|
858 | if (rayCastMethod == 0)
|
---|
859 | {
|
---|
860 | mRayCaster = new InternalRayCaster(*this, mKdTree);
|
---|
861 | cout << "ray cast method: internal" << endl;
|
---|
862 | }
|
---|
863 | else
|
---|
864 | {
|
---|
865 | #ifdef GTP_INTERNAL
|
---|
866 | mRayCaster = new IntelRayCaster(*this, externKdTree);
|
---|
867 | cout << "ray cast method: intel" << endl;
|
---|
868 | #endif
|
---|
869 | }
|
---|
870 |
|
---|
871 | return true;
|
---|
872 | }
|
---|
873 |
|
---|
874 |
|
---|
875 | void
|
---|
876 | Preprocessor::CastRays(
|
---|
877 | SimpleRayContainer &rays,
|
---|
878 | VssRayContainer &vssRays,
|
---|
879 | const bool castDoubleRays,
|
---|
880 | const bool pruneInvalidRays
|
---|
881 | )
|
---|
882 | {
|
---|
883 | const long t1 = GetTime();
|
---|
884 |
|
---|
885 | for (int i = 0; i < (int)rays.size();)
|
---|
886 | {
|
---|
887 | if (i + 16 < (int)rays.size())
|
---|
888 | {
|
---|
889 | mRayCaster->CastRays16(
|
---|
890 | i,
|
---|
891 | rays,
|
---|
892 | vssRays,
|
---|
893 | mViewCellsManager->GetViewSpaceBox(),
|
---|
894 | castDoubleRays,
|
---|
895 | pruneInvalidRays);
|
---|
896 | i += 16;
|
---|
897 | }
|
---|
898 | else
|
---|
899 | {
|
---|
900 | mRayCaster->CastRay(
|
---|
901 | rays[i],
|
---|
902 | vssRays,
|
---|
903 | mViewCellsManager->GetViewSpaceBox(),
|
---|
904 | castDoubleRays,
|
---|
905 | pruneInvalidRays);
|
---|
906 | i ++;
|
---|
907 | }
|
---|
908 | if (i % 10000 == 0)
|
---|
909 | cout<<"\r"<<i<<"/"<<rays.size()<<"\r";
|
---|
910 | }
|
---|
911 | cout<<endl;
|
---|
912 |
|
---|
913 | long t2 = GetTime();
|
---|
914 |
|
---|
915 | #if SHOW_RAYCAST_TIMING
|
---|
916 | if (castDoubleRays)
|
---|
917 | cout << 2 * rays.size() / (1e3f * TimeDiff(t1, t2)) << "M rays/s" << endl;
|
---|
918 | else
|
---|
919 | cout << rays.size() / (1e3f * TimeDiff(t1, t2)) << "M rays/s" << endl;
|
---|
920 | #endif
|
---|
921 | }
|
---|
922 |
|
---|
923 |
|
---|
924 | bool Preprocessor::GenerateRayBundle(SimpleRayContainer &rayBundle,
|
---|
925 | const SimpleRay &mainRay,
|
---|
926 | const int number,
|
---|
927 | const int pertubType) const
|
---|
928 | {
|
---|
929 | rayBundle.push_back(mainRay);
|
---|
930 |
|
---|
931 | const float pertubOrigin = 0.0f;
|
---|
932 | const float pertubDir = 0.2f;
|
---|
933 |
|
---|
934 | for (int i = 0; i < number - 1; ++ i)
|
---|
935 | {
|
---|
936 | Vector3 pertub;
|
---|
937 |
|
---|
938 | pertub.x = RandomValue(0.0f, pertubDir);
|
---|
939 | pertub.y = RandomValue(0.0f, pertubDir);
|
---|
940 | pertub.z = RandomValue(0.0f, pertubDir);
|
---|
941 | const Vector3 newDir = mainRay.mDirection + pertub;
|
---|
942 | //const Vector3 newDir = mainRay.mDirection;
|
---|
943 |
|
---|
944 | pertub.x = RandomValue(0.0f, pertubOrigin);
|
---|
945 | pertub.y = RandomValue(0.0f, pertubOrigin);
|
---|
946 | pertub.z = RandomValue(0.0f, pertubOrigin);
|
---|
947 | const Vector3 newOrigin = mainRay.mOrigin + pertub;
|
---|
948 | //const Vector3 newOrigin = mainRay.mOrigin;
|
---|
949 |
|
---|
950 | rayBundle.push_back(SimpleRay(newOrigin, newDir, 0));
|
---|
951 | }
|
---|
952 |
|
---|
953 | return true;
|
---|
954 | }
|
---|
955 |
|
---|
956 |
|
---|
957 | void Preprocessor::SetupRay(Ray &ray,
|
---|
958 | const Vector3 &point,
|
---|
959 | const Vector3 &direction
|
---|
960 | ) const
|
---|
961 | {
|
---|
962 | ray.Clear();
|
---|
963 | // do not store anything else then intersections at the ray
|
---|
964 | ray.Init(point, direction, Ray::LOCAL_RAY);
|
---|
965 |
|
---|
966 | }
|
---|
967 |
|
---|
968 |
|
---|
969 | }
|
---|