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 |
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20 | #ifdef GTP_INTERNAL
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21 | #include "ArchModeler2MLRT.hxx"
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22 | #endif
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23 |
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24 | namespace GtpVisibilityPreprocessor {
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25 |
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26 | const static bool ADDITIONAL_GEOMETRY_HACK = false;
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27 |
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28 | //Preprocessor *preprocessor;
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29 |
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30 |
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31 | // HACK: Artificially modify scene to watch rendercost changes
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32 | static void AddGeometry(SceneGraph *scene)
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33 | {
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34 | scene->mRoot->UpdateBox();
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35 |
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36 | AxisAlignedBox3 sceneBox = scene->GetBox();
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37 |
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38 | int n = 200;
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39 |
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40 | if (0){
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41 | // form grid of boxes
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42 | for (int i = 0; i < n; ++ i)
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43 | {
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44 | for (int j = 0; j < n; ++ j)
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45 | {
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46 | const Vector3 scale2((float)j * 0.8f / n + 0.1f, 0.05f, (float)i * 0.8f / (float)n + 0.1f);
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47 |
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48 | const Vector3 pt2 = sceneBox.Min() + scale2 * (sceneBox.Max() - sceneBox.Min());
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49 |
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50 | const Vector3 boxSize = sceneBox.Size() * Vector3(0.0025f, 0.01f, 0.0025f);
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51 | AxisAlignedBox3 box(pt2, pt2 + boxSize);
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52 | Mesh *mesh = CreateMeshFromBox(box);
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53 |
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54 | mesh->Preprocess();
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55 |
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56 | MeshInstance *mi = new MeshInstance(mesh);
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57 | scene->mRoot->mGeometry.push_back(mi);
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58 | }
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59 | }
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60 |
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61 | for (int i = 0; i < n; ++ i)
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62 | {
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63 | for (int j = 0; j < n; ++ j)
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64 | {
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65 | const Vector3 scale2(0.15f, (float)j * 0.8f / n + 0.1f, (float)i * 0.8f / (float)n + 0.1f);
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66 |
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67 | Vector3 pt2 = sceneBox.Min() + scale2 * (sceneBox.Max() - sceneBox.Min());
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68 |
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69 | Vector3 boxSize = sceneBox.Size() * Vector3(0.0025f, 0.01f, 0.0025f);
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70 | AxisAlignedBox3 box(pt2, pt2 + boxSize);
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71 | Mesh *mesh = CreateMeshFromBox(box);
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72 |
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73 | mesh->Preprocess();
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74 |
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75 | MeshInstance *mi = new MeshInstance(mesh);
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76 | scene->mRoot->mGeometry.push_back(mi);
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77 | }
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78 | }
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79 |
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80 | for (int i = 0; i < n; ++ i)
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81 | {
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82 | const Vector3 scale2(2, 0.2f, (float)i * 0.8f / (float)n + 0.1f);
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83 |
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84 | Vector3 pt2 = sceneBox.Min() + scale2 * (sceneBox.Max() - sceneBox.Min());
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85 |
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86 | //Vector3 boxSize = sceneBox.Size() * Vector3(0.0025, 0.01, 0.0025);
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87 | Vector3 boxSize = sceneBox.Size() * Vector3(0.005f, 0.02f, 0.005f);
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88 |
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89 | AxisAlignedBox3 box(pt2 + 0.1f, pt2 + boxSize);
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90 | Mesh *mesh = CreateMeshFromBox(box);
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91 |
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92 | mesh->Preprocess();
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93 |
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94 | MeshInstance *mi = new MeshInstance(mesh);
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95 | scene->mRoot->mGeometry.push_back(mi);
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96 | }
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97 |
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98 | scene->mRoot->UpdateBox();
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99 | }
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100 |
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101 | if (1)
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102 | {
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103 | // plane separating view space regions
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104 | const Vector3 scale(1.0f, 0.0, 0);
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105 |
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106 | Vector3 pt = sceneBox.Min() + scale * (sceneBox.Max() - sceneBox.Min());
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107 |
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108 | Plane3 cuttingPlane(Vector3(1, 0, 0), pt);
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109 | Mesh *planeMesh = new Mesh();
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110 |
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111 | Polygon3 *poly = sceneBox.CrossSection(cuttingPlane);
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112 | IncludePolyInMesh(*poly, *planeMesh);
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113 |
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114 | planeMesh->Preprocess();
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115 |
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116 | MeshInstance *planeMi = new MeshInstance(planeMesh);
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117 | scene->mRoot->mGeometry.push_back(planeMi);
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118 | }
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119 | }
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120 |
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121 |
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122 | Preprocessor::Preprocessor():
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123 | mKdTree(NULL),
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124 | mBspTree(NULL),
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125 | mVspBspTree(NULL),
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126 | mVspTree(NULL),
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127 | mOspTree(NULL),
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128 | mBvHierarchy(NULL),
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129 | mViewCellsManager(NULL),
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130 | mRenderSimulator(NULL),
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131 | mPass(0)
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132 | {
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133 | Environment::GetSingleton()->GetBoolValue("Preprocessor.useGlRenderer", mUseGlRenderer);
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134 |
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135 | // renderer will be constructed when the scene graph and viewcell manager will be known
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136 | renderer = NULL;
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137 |
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138 | Environment::GetSingleton()->GetBoolValue("Preprocessor.useGlDebugger", mUseGlDebugger);
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139 | Environment::GetSingleton()->GetBoolValue("Preprocessor.loadPolygonsAsMeshes", mLoadPolygonsAsMeshes);
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140 | Environment::GetSingleton()->GetBoolValue("Preprocessor.quitOnFinish", mQuitOnFinish);
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141 | Environment::GetSingleton()->GetBoolValue("Preprocessor.computeVisibility", mComputeVisibility);
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142 | Environment::GetSingleton()->GetBoolValue("Preprocessor.detectEmptyViewSpace", mDetectEmptyViewSpace);
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143 | Environment::GetSingleton()->GetBoolValue("Preprocessor.exportVisibility", mExportVisibility );
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144 | Environment::GetSingleton()->GetIntValue("Preprocessor.rayCastMethod", mRayCastMethod);
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145 |
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146 | char buffer[256];
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147 | Environment::GetSingleton()->GetStringValue("Preprocessor.visibilityFile", buffer);
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148 | mVisibilityFileName = buffer;
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149 | Environment::GetSingleton()->GetBoolValue("Preprocessor.applyVisibilityFilter", mApplyVisibilityFilter );
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150 | Environment::GetSingleton()->GetBoolValue("Preprocessor.applyVisibilitySpatialFilter",
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151 | mApplyVisibilitySpatialFilter );
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152 | Environment::GetSingleton()->GetFloatValue("Preprocessor.visibilityFilterWidth", mVisibilityFilterWidth);
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153 |
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154 | Debug << "detect empty view space=" << mDetectEmptyViewSpace << endl;
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155 | Debug << "load polygons as meshes: " << mLoadPolygonsAsMeshes << endl;
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156 | }
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157 |
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158 |
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159 | Preprocessor::~Preprocessor()
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160 | {
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161 | cout << "cleaning up" << endl;
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162 |
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163 | cout << "Deleting view cells manager ... \n";
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164 | DEL_PTR(mViewCellsManager);
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165 | cout << "done.\n";
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166 |
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167 | cout << "Deleting bsp tree ... \n";
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168 | DEL_PTR(mBspTree);
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169 | cout << "done.\n";
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170 |
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171 | cout << "Deleting kd tree...\n";
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172 | DEL_PTR(mKdTree);
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173 | cout << "done.\n";
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174 |
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175 | cout << "Deleting vsp tree...\n";
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176 | DEL_PTR(mVspTree);
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177 | cout << "done.\n";
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178 |
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179 | cout << "Deleting osp tree...\n";
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180 | DEL_PTR(mOspTree);
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181 | cout << "done.\n";
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182 |
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183 | cout << "Deleting vspbsp tree...\n";
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184 | DEL_PTR(mVspBspTree);
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185 | cout << "done.\n";
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186 |
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187 | cout << "Deleting scene graph...\n";
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188 | DEL_PTR(mSceneGraph);
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189 | cout << "done.\n";
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190 |
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191 | DEL_PTR(mRenderSimulator);
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192 | DEL_PTR(renderer);
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193 | }
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194 |
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195 | int
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196 | SplitFilenames(const string str, vector<string> &filenames)
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197 | {
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198 | int pos = 0;
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199 |
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200 | while(1) {
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201 | int npos = (int)str.find(';', pos);
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202 |
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203 | if (npos < 0 || npos - pos < 1)
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204 | break;
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205 | filenames.push_back(string(str, pos, npos - pos));
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206 | pos = npos + 1;
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207 | }
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208 |
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209 | filenames.push_back(string(str, pos, str.size() - pos));
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210 | return (int)filenames.size();
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211 | }
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212 |
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213 |
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214 | bool
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215 | Preprocessor::LoadScene(const string filename)
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216 | {
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217 | // use leaf nodes of the original spatial hierarchy as occludees
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218 | mSceneGraph = new SceneGraph;
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219 |
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220 | Parser *parser;
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221 | vector<string> filenames;
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222 | int files = SplitFilenames(filename, filenames);
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223 | cout << "number of input files: " << files << endl;
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224 | bool result = false;
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225 | if (files == 1) {
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226 |
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227 | if (strstr(filename.c_str(), ".x3d"))
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228 | parser = new X3dParser;
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229 | else
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230 | if (strstr(filename.c_str(), ".ply") || strstr(filename.c_str(), ".plb"))
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231 | parser = new PlyParser;
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232 | else if (strstr(filename.c_str(), ".obj"))
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233 | parser = new ObjParser;
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234 | else
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235 | parser = new UnigraphicsParser;
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236 |
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237 | cout<<filename<<endl;
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238 |
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239 | if (mRayCastMethod == Preprocessor::INTEL_RAYCASTER)
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240 | result = parser->ParseFile(filename, &mSceneGraph->mRoot,
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241 | mLoadPolygonsAsMeshes,
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242 | &mFaceParents);
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243 | else
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244 | result = parser->ParseFile(filename, &mSceneGraph->mRoot, mLoadPolygonsAsMeshes);
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245 |
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246 | delete parser;
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247 |
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248 | } else {
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249 | // root for different files
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250 | mSceneGraph->mRoot = new SceneGraphNode;
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251 | for (int i= 0; i < filenames.size(); i++) {
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252 | if (strstr(filenames[i].c_str(), ".x3d"))
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253 | parser = new X3dParser;
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254 | else
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255 | parser = new UnigraphicsParser;
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256 |
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257 | SceneGraphNode *node;
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258 | bool success;
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259 |
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260 | if (mRayCastMethod == Preprocessor::INTEL_RAYCASTER)
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261 | success = parser->ParseFile(filename, &node,
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262 | mLoadPolygonsAsMeshes,
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263 | &mFaceParents);
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264 | else
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265 | success = parser->ParseFile(filename, &node, mLoadPolygonsAsMeshes);
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266 |
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267 | if (success) {
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268 | mSceneGraph->mRoot->mChildren.push_back(node);
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269 | // at least one file parsed
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270 | result = true;
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271 | }
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272 |
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273 | delete parser;
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274 | }
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275 | }
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276 |
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277 |
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278 | if (result)
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279 | {
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280 | // HACK
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281 | if (ADDITIONAL_GEOMETRY_HACK)
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282 | AddGeometry(mSceneGraph);
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283 |
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284 | mSceneGraph->AssignObjectIds();
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285 |
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286 | int intersectables, faces;
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287 | mSceneGraph->GetStatistics(intersectables, faces);
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288 |
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289 | cout<<filename<<" parsed successfully."<<endl;
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290 | cout<<"#NUM_OBJECTS (Total numner of objects)\n"<<intersectables<<endl;
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291 | cout<<"#NUM_FACES (Total numner of faces)\n"<<faces<<endl;
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292 | mSceneGraph->CollectObjects(&mObjects);
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293 | mSceneGraph->mRoot->UpdateBox();
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294 |
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295 | if (0)
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296 | {
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297 | Exporter *exporter = Exporter::GetExporter("testload.x3d");
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298 |
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299 | if (exporter)
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300 | {
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301 | exporter->ExportGeometry(mObjects);
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302 | delete exporter;
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303 | }
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304 | }
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305 | }
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306 |
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307 |
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308 | return result;
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309 | }
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310 |
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311 | bool
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312 | Preprocessor::ExportPreprocessedData(const string filename)
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313 | {
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314 |
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315 | mViewCellsManager->ExportViewCells(filename, true, mObjects);
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316 |
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317 | return true;
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318 | }
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319 |
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320 | bool
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321 | Preprocessor::PostProcessVisibility()
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322 | {
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323 |
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324 | if (mApplyVisibilityFilter || mApplyVisibilitySpatialFilter) {
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325 | cout<<"Applying visibility filter ...";
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326 | cout<<"filter width = " << mVisibilityFilterWidth << endl;
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327 |
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328 | if (!mViewCellsManager)
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329 | return false;
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330 |
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331 | mViewCellsManager->ApplyFilter(mKdTree,
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332 | mApplyVisibilityFilter ? mVisibilityFilterWidth : -1.0f,
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333 | mApplyVisibilitySpatialFilter ? mVisibilityFilterWidth : -1.0f);
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334 | cout << "done." << endl;
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335 | }
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336 |
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337 | // export the preprocessed information to a file
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338 | if (mExportVisibility)
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339 | ExportPreprocessedData(mVisibilityFileName);
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340 |
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341 | return true;
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342 | }
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343 |
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344 |
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345 | bool
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346 | Preprocessor::BuildKdTree()
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347 | {
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348 | mKdTree = new KdTree;
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349 | // add mesh instances of the scene graph to the root of the tree
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350 | KdLeaf *root = (KdLeaf *)mKdTree->GetRoot();
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351 | mSceneGraph->CollectObjects(&root->mObjects);
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352 |
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353 | long startTime = GetTime();
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354 |
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355 | cout << "building kd tree ... " << endl;
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356 | mKdTree->Construct();
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357 | cout << "construction finished in " << TimeDiff(startTime, GetTime()) * 1e-3 << " secs " << endl;
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358 | return true;
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359 | }
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360 |
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361 | void
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362 | Preprocessor::KdTreeStatistics(ostream &s)
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363 | {
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364 | s<<mKdTree->GetStatistics();
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365 | }
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366 |
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367 | void
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368 | Preprocessor::BspTreeStatistics(ostream &s)
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369 | {
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370 | s << mBspTree->GetStatistics();
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371 | }
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372 |
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373 | bool
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374 | Preprocessor::Export( const string filename,
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375 | const bool scene,
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376 | const bool kdtree,
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377 | const bool bsptree
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378 | )
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379 | {
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380 | Exporter *exporter = Exporter::GetExporter(filename);
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381 |
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382 | if (exporter) {
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383 | if (scene)
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384 | exporter->ExportScene(mSceneGraph->mRoot);
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385 |
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386 | if (kdtree) {
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387 | exporter->SetWireframe();
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388 | exporter->ExportKdTree(*mKdTree);
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389 | }
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390 |
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391 | if (bsptree) {
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392 | //exporter->SetWireframe();
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393 | exporter->ExportBspTree(*mBspTree);
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394 | }
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395 |
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396 | delete exporter;
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397 | return true;
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398 | }
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399 |
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400 | return false;
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401 | }
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402 |
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403 |
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404 | bool Preprocessor::PrepareViewCells()
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405 | {
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406 | //-- parse view cells construction method
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407 | Environment::GetSingleton()->GetBoolValue("ViewCells.loadFromFile", mLoadViewCells);
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408 | char buf[100];
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409 |
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410 | if (mLoadViewCells)
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411 | {
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412 | Environment::GetSingleton()->GetStringValue("ViewCells.filename", buf);
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413 | cout << "loading view cells from " << buf << endl;
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414 | mViewCellsManager = ViewCellsManager::LoadViewCells(buf, &mObjects, true);
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415 | }
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416 | else
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417 | {
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418 | //-- parse type of view cell container
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419 |
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420 | Environment::GetSingleton()->GetStringValue("ViewCells.type", buf);
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421 | mViewCellsManager = CreateViewCellsManager(buf);
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422 |
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423 | // default view space is the extent of the scene
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424 | mViewCellsManager->SetViewSpaceBox(mSceneGraph->GetBox());
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425 |
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426 |
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427 | }
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428 |
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429 | //-- parameters for render heuristics evaluation
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430 | float objRenderCost = 0, vcOverhead = 0, moveSpeed = 0;
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431 |
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432 | Environment::GetSingleton()->GetFloatValue("Simulation.objRenderCost",objRenderCost);
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433 | Environment::GetSingleton()->GetFloatValue("Simulation.vcOverhead", vcOverhead);
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434 | Environment::GetSingleton()->GetFloatValue("Simulation.moveSpeed", moveSpeed);
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435 |
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436 | mRenderSimulator =
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437 | new RenderSimulator(mViewCellsManager, objRenderCost, vcOverhead, moveSpeed);
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438 |
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439 | mViewCellsManager->SetRenderer(mRenderSimulator);
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440 |
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441 |
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442 | if (mUseGlRenderer || mUseGlDebugger)
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443 | {
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444 | // NOTE: render texture should be power of 2 and square
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445 | // renderer must be initialised
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446 | // $$matt
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447 | // renderer = new GlRendererBuffer(1024, 768, mSceneGraph, mViewCellsManager, mKdTree);
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448 | // renderer->makeCurrent();
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449 |
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450 | }
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451 |
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452 | return true;
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453 | }
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454 |
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455 |
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456 | ViewCellsManager *Preprocessor::CreateViewCellsManager(const char *name)
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457 | {
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458 | ViewCellsTree *vcTree = new ViewCellsTree;
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459 |
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460 | if (strcmp(name, "kdTree") == 0)
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461 | {
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462 | mViewCellsManager = new KdViewCellsManager(vcTree, mKdTree);
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463 | }
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464 | else if (strcmp(name, "bspTree") == 0)
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465 | {
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466 | Debug << "view cell type: Bsp" << endl;
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467 |
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468 | mBspTree = new BspTree();
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469 | mViewCellsManager = new BspViewCellsManager(vcTree, mBspTree);
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470 | }
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471 | else if (strcmp(name, "vspBspTree") == 0)
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472 | {
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473 | Debug << "view cell type: VspBsp" << endl;
|
---|
474 |
|
---|
475 | mVspBspTree = new VspBspTree();
|
---|
476 | mViewCellsManager = new VspBspViewCellsManager(vcTree, mVspBspTree);
|
---|
477 | }
|
---|
478 | else if (strcmp(name, "vspOspTree") == 0)
|
---|
479 | {
|
---|
480 | mVspTree = new VspTree();
|
---|
481 | //mOspTree = new OspTree();
|
---|
482 |
|
---|
483 | // HACK for testing if per kd evaluation works!!
|
---|
484 | mOspTree = new OspTree(*mKdTree);
|
---|
485 |
|
---|
486 | mViewCellsManager = new VspOspViewCellsManager(vcTree, mVspTree, mOspTree);
|
---|
487 | }
|
---|
488 | else if (strcmp(name, "sceneDependent") == 0)
|
---|
489 | {
|
---|
490 | Debug << "view cell type: Bsp" << endl;
|
---|
491 |
|
---|
492 | //TODO
|
---|
493 | mBspTree = new BspTree();
|
---|
494 | mViewCellsManager = new BspViewCellsManager(vcTree, mBspTree);
|
---|
495 | }
|
---|
496 | else
|
---|
497 | {
|
---|
498 | cerr << "Wrong view cells type " << name << "!!!" << endl;
|
---|
499 | exit(1);
|
---|
500 | }
|
---|
501 |
|
---|
502 | //vcTree->SetViewCellsManager(mViewCellsManager);
|
---|
503 | return mViewCellsManager;
|
---|
504 | }
|
---|
505 |
|
---|
506 |
|
---|
507 | // use ascii format to store rays
|
---|
508 | #define USE_ASCII 0
|
---|
509 |
|
---|
510 |
|
---|
511 | static inline bool ilt(Intersectable *obj1, Intersectable *obj2)
|
---|
512 | {
|
---|
513 | return obj1->mId < obj2->mId;
|
---|
514 | }
|
---|
515 |
|
---|
516 |
|
---|
517 | bool Preprocessor::LoadKdTree()
|
---|
518 | {
|
---|
519 | return true;
|
---|
520 | }
|
---|
521 |
|
---|
522 | bool Preprocessor::ExportKdTree()
|
---|
523 | {
|
---|
524 | return true;
|
---|
525 | }
|
---|
526 |
|
---|
527 |
|
---|
528 | bool Preprocessor::LoadSamples(VssRayContainer &samples,
|
---|
529 | ObjectContainer &objects) const
|
---|
530 | {
|
---|
531 | std::stable_sort(objects.begin(), objects.end(), ilt);
|
---|
532 | char fileName[100];
|
---|
533 | Environment::GetSingleton()->GetStringValue("Preprocessor.samplesFilename", fileName);
|
---|
534 |
|
---|
535 | Vector3 origin, termination;
|
---|
536 | // HACK: needed only for lower_bound algorithm to find the
|
---|
537 | // intersected objects
|
---|
538 | MeshInstance sObj(NULL);
|
---|
539 | MeshInstance tObj(NULL);
|
---|
540 |
|
---|
541 | #if USE_ASCII
|
---|
542 | ifstream samplesIn(fileName);
|
---|
543 | if (!samplesIn.is_open())
|
---|
544 | return false;
|
---|
545 |
|
---|
546 | string buf;
|
---|
547 | while (!(getline(samplesIn, buf)).eof())
|
---|
548 | {
|
---|
549 | sscanf(buf.c_str(), "%f %f %f %f %f %f %d %d",
|
---|
550 | &origin.x, &origin.y, &origin.z,
|
---|
551 | &termination.x, &termination.y, &termination.z,
|
---|
552 | &(sObj.mId), &(tObj.mId));
|
---|
553 |
|
---|
554 | Intersectable *sourceObj = NULL;
|
---|
555 | Intersectable *termObj = NULL;
|
---|
556 |
|
---|
557 | if (sObj.mId >= 0)
|
---|
558 | {
|
---|
559 | ObjectContainer::iterator oit =
|
---|
560 | lower_bound(objects.begin(), objects.end(), &sObj, ilt);
|
---|
561 | sourceObj = *oit;
|
---|
562 | }
|
---|
563 |
|
---|
564 | if (tObj.mId >= 0)
|
---|
565 | {
|
---|
566 | ObjectContainer::iterator oit =
|
---|
567 | lower_bound(objects.begin(), objects.end(), &tObj, ilt);
|
---|
568 | termObj = *oit;
|
---|
569 | }
|
---|
570 |
|
---|
571 | samples.push_back(new VssRay(origin, termination, sourceObj, termObj));
|
---|
572 | }
|
---|
573 | #else
|
---|
574 | ifstream samplesIn(fileName, ios::binary);
|
---|
575 | if (!samplesIn.is_open())
|
---|
576 | return false;
|
---|
577 |
|
---|
578 | while (1)
|
---|
579 | {
|
---|
580 | samplesIn.read(reinterpret_cast<char *>(&origin), sizeof(Vector3));
|
---|
581 | samplesIn.read(reinterpret_cast<char *>(&termination), sizeof(Vector3));
|
---|
582 | samplesIn.read(reinterpret_cast<char *>(&(sObj.mId)), sizeof(int));
|
---|
583 | samplesIn.read(reinterpret_cast<char *>(&(tObj.mId)), sizeof(int));
|
---|
584 |
|
---|
585 | if (samplesIn.eof())
|
---|
586 | break;
|
---|
587 |
|
---|
588 | Intersectable *sourceObj = NULL;
|
---|
589 | Intersectable *termObj = NULL;
|
---|
590 |
|
---|
591 | if (sObj.mId >= 0)
|
---|
592 | {
|
---|
593 | ObjectContainer::iterator oit =
|
---|
594 | lower_bound(objects.begin(), objects.end(), &sObj, ilt);
|
---|
595 | sourceObj = *oit;
|
---|
596 | }
|
---|
597 |
|
---|
598 | if (tObj.mId >= 0)
|
---|
599 | {
|
---|
600 | ObjectContainer::iterator oit =
|
---|
601 | lower_bound(objects.begin(), objects.end(), &tObj, ilt);
|
---|
602 | termObj = *oit;
|
---|
603 | }
|
---|
604 |
|
---|
605 | samples.push_back(new VssRay(origin, termination, sourceObj, termObj));
|
---|
606 | }
|
---|
607 |
|
---|
608 | #endif
|
---|
609 | samplesIn.close();
|
---|
610 |
|
---|
611 | return true;
|
---|
612 | }
|
---|
613 |
|
---|
614 |
|
---|
615 | bool Preprocessor::ExportSamples(const VssRayContainer &samples) const
|
---|
616 | {
|
---|
617 | char fileName[100];
|
---|
618 | Environment::GetSingleton()->GetStringValue("Preprocessor.samplesFilename", fileName);
|
---|
619 |
|
---|
620 |
|
---|
621 | VssRayContainer::const_iterator it, it_end = samples.end();
|
---|
622 |
|
---|
623 | #if USE_ASCII
|
---|
624 | ofstream samplesOut(fileName);
|
---|
625 | if (!samplesOut.is_open())
|
---|
626 | return false;
|
---|
627 |
|
---|
628 | for (it = samples.begin(); it != it_end; ++ it)
|
---|
629 | {
|
---|
630 | VssRay *ray = *it;
|
---|
631 | int sourceid = ray->mOriginObject ? ray->mOriginObject->mId : -1;
|
---|
632 | int termid = ray->mTerminationObject ? ray->mTerminationObject->mId : -1;
|
---|
633 |
|
---|
634 | samplesOut << ray->GetOrigin().x << " " << ray->GetOrigin().y << " " << ray->GetOrigin().z << " "
|
---|
635 | << ray->GetTermination().x << " " << ray->GetTermination().y << " " << ray->GetTermination().z << " "
|
---|
636 | << sourceid << " " << termid << "\n";
|
---|
637 | }
|
---|
638 | #else
|
---|
639 | ofstream samplesOut(fileName, ios::binary);
|
---|
640 | if (!samplesOut.is_open())
|
---|
641 | return false;
|
---|
642 |
|
---|
643 | for (it = samples.begin(); it != it_end; ++ it)
|
---|
644 | {
|
---|
645 | VssRay *ray = *it;
|
---|
646 | Vector3 origin(ray->GetOrigin());
|
---|
647 | Vector3 termination(ray->GetTermination());
|
---|
648 |
|
---|
649 | int sourceid = ray->mOriginObject ? ray->mOriginObject->mId : -1;
|
---|
650 | int termid = ray->mTerminationObject ? ray->mTerminationObject->mId : -1;
|
---|
651 |
|
---|
652 | samplesOut.write(reinterpret_cast<char *>(&origin), sizeof(Vector3));
|
---|
653 | samplesOut.write(reinterpret_cast<char *>(&termination), sizeof(Vector3));
|
---|
654 | samplesOut.write(reinterpret_cast<char *>(&sourceid), sizeof(int));
|
---|
655 | samplesOut.write(reinterpret_cast<char *>(&termid), sizeof(int));
|
---|
656 | }
|
---|
657 | #endif
|
---|
658 | samplesOut.close();
|
---|
659 |
|
---|
660 | return true;
|
---|
661 | }
|
---|
662 |
|
---|
663 | #if 0 // matt: implemented interface samplestrategy
|
---|
664 | bool
|
---|
665 | Preprocessor::GenerateRays(
|
---|
666 | const int number,
|
---|
667 | const int sampleType,
|
---|
668 | SimpleRayContainer &rays
|
---|
669 | )
|
---|
670 | {
|
---|
671 | Vector3 origin, direction;
|
---|
672 | int startSize = (int)rays.size();
|
---|
673 | for (int i=0; (int)rays.size() - startSize < number; i ++) {
|
---|
674 | // now get the direction
|
---|
675 | switch (sampleType) {
|
---|
676 | case OBJECT_BASED_DISTRIBUTION: {
|
---|
677 | mViewCellsManager->GetViewPoint(origin);
|
---|
678 | Vector3 point;
|
---|
679 | Vector3 normal;
|
---|
680 | int i = RandomValue(0, mObjects.size() - 1);
|
---|
681 | Intersectable *object = mObjects[i];
|
---|
682 | object->GetRandomSurfacePoint(point, normal);
|
---|
683 | direction = point - origin;
|
---|
684 | }
|
---|
685 | break;
|
---|
686 | case OBJECT_DIRECTION_BASED_DISTRIBUTION: {
|
---|
687 | int i = RandomValue(0, mObjects.size() - 1);
|
---|
688 | Intersectable *object = mObjects[i];
|
---|
689 | Vector3 normal;
|
---|
690 | object->GetRandomSurfacePoint(origin, normal);
|
---|
691 | direction = UniformRandomVector(normal);
|
---|
692 | origin += 0.1f*direction;
|
---|
693 | }
|
---|
694 | break;
|
---|
695 | case DIRECTION_BASED_DISTRIBUTION:
|
---|
696 | mViewCellsManager->GetViewPoint(origin);
|
---|
697 | direction = UniformRandomVector();
|
---|
698 | break;
|
---|
699 | case DIRECTION_BOX_BASED_DISTRIBUTION: {
|
---|
700 | mViewCellsManager->GetViewPoint(origin);
|
---|
701 | float alpha = RandomValue(0.0f, 2*M_PI);
|
---|
702 | float beta = RandomValue(-M_PI/2, M_PI/2);
|
---|
703 | direction = VssRay::GetDirection(alpha, beta);
|
---|
704 | break;
|
---|
705 | }
|
---|
706 | case SPATIAL_BOX_BASED_DISTRIBUTION:
|
---|
707 | mViewCellsManager->GetViewPoint(origin);
|
---|
708 | direction = mKdTree->GetBox().GetRandomPoint() - origin;
|
---|
709 | break;
|
---|
710 | default:
|
---|
711 | // unsuported distribution type
|
---|
712 | return false;
|
---|
713 | }
|
---|
714 | // $$ jb the pdf is yet not correct for all sampling methods!
|
---|
715 | float pdf = 1.0f;
|
---|
716 | float c = Magnitude(direction);
|
---|
717 | if (c > Limits::Small) {
|
---|
718 | direction*=1.0f/c;
|
---|
719 | rays.AddRay(SimpleRay(origin, direction, pdf));
|
---|
720 | }
|
---|
721 | }
|
---|
722 | return true;
|
---|
723 | }
|
---|
724 | #endif
|
---|
725 | bool Preprocessor::GenerateRays(const int number,
|
---|
726 | const int sampleType,
|
---|
727 | SimpleRayContainer &rays)
|
---|
728 | {
|
---|
729 | Vector3 origin, direction;
|
---|
730 |
|
---|
731 | const int startSize = (int)rays.size();
|
---|
732 | SamplingStrategy *strategy = GenerateSamplingStrategy(sampleType);
|
---|
733 |
|
---|
734 | if (!strategy)
|
---|
735 | return false;
|
---|
736 |
|
---|
737 | for (int i=0; (int)rays.size() - startSize < number; ++ i)
|
---|
738 | {
|
---|
739 | SimpleRay newRay;
|
---|
740 | bool success = strategy->GenerateSample(newRay);
|
---|
741 |
|
---|
742 | if (success)
|
---|
743 | rays.AddRay(newRay);
|
---|
744 | }
|
---|
745 |
|
---|
746 | delete strategy;
|
---|
747 |
|
---|
748 | return true;
|
---|
749 | }
|
---|
750 |
|
---|
751 |
|
---|
752 | SamplingStrategy *Preprocessor::GenerateSamplingStrategy(const int strategyId) const
|
---|
753 | {
|
---|
754 | switch (strategyId)
|
---|
755 | {
|
---|
756 | case OBJECT_BASED_DISTRIBUTION:
|
---|
757 | return new ObjectBasedDistribution(*this);
|
---|
758 | case OBJECT_DIRECTION_BASED_DISTRIBUTION:
|
---|
759 | return new ObjectDirectionBasedDistribution(*this);
|
---|
760 | case DIRECTION_BASED_DISTRIBUTION:
|
---|
761 | return new DirectionBasedDistribution(*this);
|
---|
762 | case DIRECTION_BOX_BASED_DISTRIBUTION:
|
---|
763 | return new DirectionBoxBasedDistribution(*this);
|
---|
764 | case SPATIAL_BOX_BASED_DISTRIBUTION:
|
---|
765 | return new SpatialBoxBasedDistribution(*this);
|
---|
766 | //case OBJECTS_INTERIOR_DISTRIBUTION:
|
---|
767 | // return new ObjectsInteriorDistribution(*this);
|
---|
768 | default: // no valid strategy
|
---|
769 | return NULL;
|
---|
770 | }
|
---|
771 |
|
---|
772 | // should never come here
|
---|
773 | return NULL;
|
---|
774 | }
|
---|
775 |
|
---|
776 |
|
---|
777 | bool Preprocessor::InitRayCast(const string externKdTree)
|
---|
778 | {
|
---|
779 | switch (mRayCastMethod) // use intel ray tracing
|
---|
780 | {
|
---|
781 | case INTEL_RAYCASTER:
|
---|
782 | #ifdef GTP_INTERNAL
|
---|
783 | cout<<"Ray Cast file: "<<externKdTree<<endl;
|
---|
784 | return mlrtaLoadAS(externKdTree.c_str());
|
---|
785 | #endif
|
---|
786 | case INTERNAL_RAYCASTER:
|
---|
787 | default:
|
---|
788 | break;
|
---|
789 | }
|
---|
790 |
|
---|
791 | return true;
|
---|
792 | }
|
---|
793 |
|
---|
794 |
|
---|
795 | int Preprocessor::CastIntelDoubleRay(
|
---|
796 | const Vector3 &viewPoint,
|
---|
797 | const Vector3 &direction,
|
---|
798 | const float probability,
|
---|
799 | VssRayContainer &vssRays,
|
---|
800 | const AxisAlignedBox3 &box
|
---|
801 | )
|
---|
802 | {
|
---|
803 | VssRay *vssRay = NULL;
|
---|
804 | int hits = 0;
|
---|
805 |
|
---|
806 | Vector3 pointA, pointB;
|
---|
807 |
|
---|
808 | Intersectable *objectA =
|
---|
809 | CastIntelSingleRay(viewPoint, direction, pointA, box);
|
---|
810 |
|
---|
811 | // cast ray into other direction
|
---|
812 | Intersectable *objectB =
|
---|
813 | CastIntelSingleRay(viewPoint, -direction, pointB, box);
|
---|
814 |
|
---|
815 | const bool validSample = (objectA != objectB);
|
---|
816 |
|
---|
817 | if (validSample)
|
---|
818 | {
|
---|
819 | if (objectA)
|
---|
820 | {
|
---|
821 | vssRay = new VssRay(pointB,
|
---|
822 | pointA,
|
---|
823 | objectB,
|
---|
824 | objectA,
|
---|
825 | probability,
|
---|
826 | mPass);
|
---|
827 |
|
---|
828 | vssRays.push_back(vssRay);
|
---|
829 | hits ++;
|
---|
830 | }
|
---|
831 |
|
---|
832 | if (objectB)
|
---|
833 | {
|
---|
834 | vssRay = new VssRay(pointA,
|
---|
835 | pointB,
|
---|
836 | objectA,
|
---|
837 | objectB,
|
---|
838 | probability,
|
---|
839 | mPass);
|
---|
840 |
|
---|
841 | vssRays.push_back(vssRay);
|
---|
842 | hits ++;
|
---|
843 | }
|
---|
844 | //Debug << "intel ray: " << *vssRay << endl;
|
---|
845 | }
|
---|
846 | //cout << "a";
|
---|
847 | return hits;
|
---|
848 | }
|
---|
849 |
|
---|
850 |
|
---|
851 | Intersectable *Preprocessor::CastIntelSingleRay(const Vector3 &viewPoint,
|
---|
852 | const Vector3 &direction,
|
---|
853 | //const float probability,
|
---|
854 | Vector3 &tPoint,
|
---|
855 | const AxisAlignedBox3 &box
|
---|
856 | )
|
---|
857 | {
|
---|
858 | AxisAlignedBox3 sbox = box;
|
---|
859 | sbox.Enlarge(Vector3(-Limits::Small));
|
---|
860 |
|
---|
861 | if (!sbox.IsInside(viewPoint))
|
---|
862 | return 0;
|
---|
863 |
|
---|
864 | float pforg[3];
|
---|
865 | float pfdir[3];
|
---|
866 | double pfnorm[3];
|
---|
867 |
|
---|
868 | pforg[0] = viewPoint[0]; pforg[1] = viewPoint[1]; pforg[2] = viewPoint[2];
|
---|
869 | pfdir[0] = direction[0]; pfdir[1] = direction[1]; pfdir[2] = direction[2];
|
---|
870 |
|
---|
871 | float dist = 0;
|
---|
872 | #ifdef GTP_INTERNAL
|
---|
873 | const int hittriangle = mlrtaIntersectAS(pforg, pfdir, pfnorm, dist);
|
---|
874 | #else
|
---|
875 | const int hittriangle = -1;
|
---|
876 | #endif
|
---|
877 |
|
---|
878 | if (hittriangle == -1)
|
---|
879 | {
|
---|
880 | static Ray ray;
|
---|
881 | SetupRay(ray, viewPoint, direction);
|
---|
882 |
|
---|
883 | float tmin = 0, tmax;
|
---|
884 | if (box.ComputeMinMaxT(ray, &tmin, &tmax) && tmin < tmax)
|
---|
885 | {
|
---|
886 | tPoint = ray.Extrap(tmax);
|
---|
887 | }
|
---|
888 |
|
---|
889 | return NULL;
|
---|
890 | }
|
---|
891 | else
|
---|
892 | {
|
---|
893 | tPoint[0] = pforg[0] + pfdir[0] * dist;
|
---|
894 | tPoint[1] = pforg[1] + pfdir[1] * dist;
|
---|
895 | tPoint[2] = pforg[2] + pfdir[2] * dist;
|
---|
896 |
|
---|
897 | return mFaceParents[hittriangle];
|
---|
898 | }
|
---|
899 | }
|
---|
900 |
|
---|
901 |
|
---|
902 | int Preprocessor::CastInternalRay(
|
---|
903 | const Vector3 &viewPoint,
|
---|
904 | const Vector3 &direction,
|
---|
905 | const float probability,
|
---|
906 | VssRayContainer &vssRays,
|
---|
907 | const AxisAlignedBox3 &box
|
---|
908 | )
|
---|
909 | {
|
---|
910 |
|
---|
911 | int hits = 0;
|
---|
912 | static Ray ray;
|
---|
913 | Intersectable *objectA, *objectB;
|
---|
914 | Vector3 pointA, pointB;
|
---|
915 |
|
---|
916 | // AxisAlignedBox3 box = Union(mKdTree->GetBox(), mViewCellsManager->GetViewSpaceBox());
|
---|
917 |
|
---|
918 |
|
---|
919 | AxisAlignedBox3 sbox = box;
|
---|
920 | sbox.Enlarge(Vector3(-Limits::Small));
|
---|
921 | if (!sbox.IsInside(viewPoint))
|
---|
922 | return 0;
|
---|
923 |
|
---|
924 | SetupRay(ray, viewPoint, direction);
|
---|
925 | ray.mFlags &= ~Ray::CULL_BACKFACES;
|
---|
926 |
|
---|
927 | // cast ray to KD tree to find intersection with other objects
|
---|
928 | float bsize = Magnitude(box.Size());
|
---|
929 |
|
---|
930 |
|
---|
931 | if (mKdTree->CastRay(ray)) {
|
---|
932 | objectA = ray.intersections[0].mObject;
|
---|
933 | pointA = ray.Extrap(ray.intersections[0].mT);
|
---|
934 | if (mDetectEmptyViewSpace)
|
---|
935 | if (DotProd(ray.intersections[0].mNormal, direction) >= 0) {
|
---|
936 | // discard the sample
|
---|
937 | return 0;
|
---|
938 | }
|
---|
939 |
|
---|
940 | } else {
|
---|
941 | objectA = NULL;
|
---|
942 | // compute intersection with the scene bounding box
|
---|
943 | float tmin, tmax;
|
---|
944 | if (box.ComputeMinMaxT(ray, &tmin, &tmax) && tmin < tmax)
|
---|
945 | pointA = ray.Extrap(tmax);
|
---|
946 | else
|
---|
947 | return 0;
|
---|
948 | }
|
---|
949 |
|
---|
950 |
|
---|
951 | SetupRay(ray, viewPoint, -direction);
|
---|
952 | ray.mFlags &= ~Ray::CULL_BACKFACES;
|
---|
953 |
|
---|
954 | if (mKdTree->CastRay(ray)) {
|
---|
955 | objectB = ray.intersections[0].mObject;
|
---|
956 | pointB = ray.Extrap(ray.intersections[0].mT);
|
---|
957 | if (mDetectEmptyViewSpace)
|
---|
958 | if (DotProd(ray.intersections[0].mNormal, direction) <= 0) {
|
---|
959 | // discard the sample
|
---|
960 | return 0;
|
---|
961 | }
|
---|
962 | } else {
|
---|
963 | objectB = NULL;
|
---|
964 | float tmin, tmax;
|
---|
965 | if (box.ComputeMinMaxT(ray, &tmin, &tmax) && tmin < tmax)
|
---|
966 | pointB = ray.Extrap(tmax);
|
---|
967 | else
|
---|
968 | return 0;
|
---|
969 | }
|
---|
970 |
|
---|
971 |
|
---|
972 | VssRay *vssRay = NULL;
|
---|
973 | bool validSample = (objectA != objectB);
|
---|
974 | if (validSample) {
|
---|
975 | if (objectA) {
|
---|
976 | vssRay = new VssRay(pointB,
|
---|
977 | pointA,
|
---|
978 | objectB,
|
---|
979 | objectA,
|
---|
980 | mPass,
|
---|
981 | probability
|
---|
982 | );
|
---|
983 | vssRays.push_back(vssRay);
|
---|
984 | hits ++;
|
---|
985 | }
|
---|
986 |
|
---|
987 | if (objectB) {
|
---|
988 | vssRay = new VssRay(pointA,
|
---|
989 | pointB,
|
---|
990 | objectA,
|
---|
991 | objectB,
|
---|
992 | mPass,
|
---|
993 | probability
|
---|
994 | );
|
---|
995 | vssRays.push_back(vssRay);
|
---|
996 | hits ++;
|
---|
997 | }
|
---|
998 | }
|
---|
999 |
|
---|
1000 | return hits;
|
---|
1001 | }
|
---|
1002 |
|
---|
1003 |
|
---|
1004 | int Preprocessor::CastRay(
|
---|
1005 | const Vector3 &viewPoint,
|
---|
1006 | const Vector3 &direction,
|
---|
1007 | const float probability,
|
---|
1008 | VssRayContainer &vssRays,
|
---|
1009 | const AxisAlignedBox3 &box
|
---|
1010 | )
|
---|
1011 | {
|
---|
1012 | switch (mRayCastMethod)
|
---|
1013 | {
|
---|
1014 | case INTEL_RAYCASTER:
|
---|
1015 | return CastIntelDoubleRay(viewPoint, direction, probability, vssRays, box);
|
---|
1016 | case INTERNAL_RAYCASTER:
|
---|
1017 | default:
|
---|
1018 | return CastInternalRay(viewPoint, direction, probability, vssRays, box);
|
---|
1019 | }
|
---|
1020 | }
|
---|
1021 |
|
---|
1022 |
|
---|
1023 | void Preprocessor::SetupRay(Ray &ray,
|
---|
1024 | const Vector3 &point,
|
---|
1025 | const Vector3 &direction
|
---|
1026 | )
|
---|
1027 | {
|
---|
1028 | ray.Clear();
|
---|
1029 | // do not store anything else then intersections at the ray
|
---|
1030 | ray.Init(point, direction, Ray::LOCAL_RAY);
|
---|
1031 | }
|
---|
1032 |
|
---|
1033 | }
|
---|