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 |
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22 |
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23 | #ifdef GTP_INTERNAL
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24 | #include "ArchModeler2MLRT.hxx"
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25 | #endif
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26 |
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27 | #define DEBUG_RAYCAST 0
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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 | //Preprocessor *preprocessor;
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35 |
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36 |
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37 | // HACK: Artificially modify scene to watch rendercost changes
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38 | static void AddGeometry(SceneGraph *scene)
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39 | {
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40 | scene->GetRoot()->UpdateBox();
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41 |
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42 | AxisAlignedBox3 sceneBox = scene->GetBox();
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43 |
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44 | int n = 200;
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45 |
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46 | if (0)
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47 | {
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48 | // form grid of boxes
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49 | for (int i = 0; i < n; ++ i)
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50 | {
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51 | for (int j = 0; j < n; ++ j)
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52 | {
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53 | const Vector3 scale2((float)j * 0.8f / n + 0.1f, 0.05f, (float)i * 0.8f / (float)n + 0.1f);
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54 |
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55 | const Vector3 pt2 = sceneBox.Min() + scale2 * (sceneBox.Max() - sceneBox.Min());
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56 |
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57 | const Vector3 boxSize = sceneBox.Size() * Vector3(0.0025f, 0.01f, 0.0025f);
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58 | AxisAlignedBox3 box(pt2, pt2 + boxSize);
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59 | Mesh *mesh = CreateMeshFromBox(box);
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60 |
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61 | mesh->Preprocess();
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62 |
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63 | MeshInstance *mi = new MeshInstance(mesh);
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64 | scene->GetRoot()->mGeometry.push_back(mi);
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65 | }
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66 | }
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67 |
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68 | for (int i = 0; i < n; ++ i)
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69 | {
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70 | for (int j = 0; j < n; ++ j)
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71 | {
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72 | const Vector3 scale2(0.15f, (float)j * 0.8f / n + 0.1f, (float)i * 0.8f / (float)n + 0.1f);
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73 |
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74 | Vector3 pt2 = sceneBox.Min() + scale2 * (sceneBox.Max() - sceneBox.Min());
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75 |
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76 | Vector3 boxSize = sceneBox.Size() * Vector3(0.0025f, 0.01f, 0.0025f);
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77 | AxisAlignedBox3 box(pt2, pt2 + boxSize);
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78 | Mesh *mesh = CreateMeshFromBox(box);
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79 |
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80 | mesh->Preprocess();
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81 |
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82 | MeshInstance *mi = new MeshInstance(mesh);
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83 | scene->GetRoot()->mGeometry.push_back(mi);
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84 | }
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85 | }
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86 |
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87 | for (int i = 0; i < n; ++ i)
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88 | {
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89 | const Vector3 scale2(2, 0.2f, (float)i * 0.8f / (float)n + 0.1f);
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90 |
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91 | Vector3 pt2 = sceneBox.Min() + scale2 * (sceneBox.Max() - sceneBox.Min());
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92 |
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93 | //Vector3 boxSize = sceneBox.Size() * Vector3(0.0025, 0.01, 0.0025);
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94 | Vector3 boxSize = sceneBox.Size() * Vector3(0.005f, 0.02f, 0.005f);
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95 |
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96 | AxisAlignedBox3 box(pt2 + 0.1f, pt2 + boxSize);
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97 | Mesh *mesh = CreateMeshFromBox(box);
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98 |
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99 | mesh->Preprocess();
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100 |
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101 | MeshInstance *mi = new MeshInstance(mesh);
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102 | scene->GetRoot()->mGeometry.push_back(mi);
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103 | }
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104 |
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105 | scene->GetRoot()->UpdateBox();
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106 | }
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107 |
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108 | if (1)
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109 | {
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110 | // plane separating view space regions
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111 | const Vector3 scale(1.0f, 0.0, 0);
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112 |
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113 | Vector3 pt = sceneBox.Min() + scale * (sceneBox.Max() - sceneBox.Min());
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114 |
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115 | Plane3 cuttingPlane(Vector3(1, 0, 0), pt);
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116 | Mesh *planeMesh = new Mesh();
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117 |
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118 | Polygon3 *poly = sceneBox.CrossSection(cuttingPlane);
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119 | IncludePolyInMesh(*poly, *planeMesh);
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120 |
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121 | planeMesh->Preprocess();
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122 |
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123 | MeshInstance *planeMi = new MeshInstance(planeMesh);
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124 | scene->GetRoot()->mGeometry.push_back(planeMi);
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125 | }
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126 | }
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127 |
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128 |
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129 | Preprocessor::Preprocessor():
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130 | mKdTree(NULL),
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131 | mBspTree(NULL),
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132 | mVspBspTree(NULL),
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133 | mVspTree(NULL),
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134 | mHierarchyManager(NULL),
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135 | mViewCellsManager(NULL),
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136 | mRenderSimulator(NULL),
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137 | mPass(0),
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138 | mRayCastMethod(0),
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139 | mSceneGraph(NULL)
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140 | {
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141 | Environment::GetSingleton()->GetBoolValue("Preprocessor.useGlRenderer", mUseGlRenderer);
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142 |
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143 | // renderer will be constructed when the scene graph and viewcell manager will be known
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144 | renderer = NULL;
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145 |
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146 | Environment::GetSingleton()->GetBoolValue("Preprocessor.useGlDebugger", mUseGlDebugger);
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147 | Environment::GetSingleton()->GetBoolValue("Preprocessor.loadPolygonsAsMeshes", mLoadPolygonsAsMeshes);
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148 | Environment::GetSingleton()->GetBoolValue("Preprocessor.quitOnFinish", mQuitOnFinish);
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149 | Environment::GetSingleton()->GetBoolValue("Preprocessor.computeVisibility", mComputeVisibility);
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150 | Environment::GetSingleton()->GetBoolValue("Preprocessor.detectEmptyViewSpace", mDetectEmptyViewSpace);
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151 | Environment::GetSingleton()->GetBoolValue("Preprocessor.exportVisibility", mExportVisibility );
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152 | Environment::GetSingleton()->GetIntValue("Preprocessor.rayCastMethod", mRayCastMethod);
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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 | mVisibilityFileName = buffer;
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157 | Environment::GetSingleton()->GetBoolValue("Preprocessor.applyVisibilityFilter", mApplyVisibilityFilter );
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158 | Environment::GetSingleton()->GetBoolValue("Preprocessor.applyVisibilitySpatialFilter",
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159 | mApplyVisibilitySpatialFilter );
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160 | Environment::GetSingleton()->GetFloatValue("Preprocessor.visibilityFilterWidth", mVisibilityFilterWidth);
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161 |
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162 | Debug << "detect empty view space=" << mDetectEmptyViewSpace << endl;
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163 | Debug << "load polygons as meshes: " << mLoadPolygonsAsMeshes << endl;
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164 | }
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165 |
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166 |
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167 | Preprocessor::~Preprocessor()
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168 | {
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169 | cout << "cleaning up" << endl;
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170 |
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171 | cout << "Deleting view cells manager ... \n";
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172 | DEL_PTR(mViewCellsManager);
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173 | cout << "done.\n";
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174 |
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175 | cout << "Deleting bsp tree ... \n";
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176 | DEL_PTR(mBspTree);
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177 | cout << "done.\n";
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178 |
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179 | cout << "Deleting kd tree...\n";
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180 | DEL_PTR(mKdTree);
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181 | cout << "done.\n";
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182 |
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183 | cout << "Deleting vsp tree...\n";
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184 | DEL_PTR(mVspTree);
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185 | cout << "done.\n";
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186 |
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187 | cout << "Deleting hierarchy manager...\n";
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188 | DEL_PTR(mHierarchyManager);
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189 | cout << "done.\n";
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190 |
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191 | cout << "Deleting vspbsp tree...\n";
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192 | DEL_PTR(mVspBspTree);
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193 | cout << "done.\n";
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194 |
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195 | cout << "Deleting scene graph...\n";
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196 | DEL_PTR(mSceneGraph);
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197 | cout << "done.\n";
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198 |
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199 | DEL_PTR(mRenderSimulator);
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200 | DEL_PTR(renderer);
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201 | }
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202 |
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203 | int
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204 | SplitFilenames(const string str, vector<string> &filenames)
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205 | {
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206 | int pos = 0;
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207 |
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208 | while(1) {
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209 | int npos = (int)str.find(';', pos);
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210 |
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211 | if (npos < 0 || npos - pos < 1)
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212 | break;
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213 | filenames.push_back(string(str, pos, npos - pos));
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214 | pos = npos + 1;
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215 | }
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216 |
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217 | filenames.push_back(string(str, pos, str.size() - pos));
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218 | return (int)filenames.size();
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219 | }
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220 |
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221 |
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222 | bool
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223 | Preprocessor::LoadScene(const string filename)
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224 | {
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225 | // use leaf nodes of the original spatial hierarchy as occludees
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226 | mSceneGraph = new SceneGraph;
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227 |
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228 | Parser *parser;
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229 | vector<string> filenames;
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230 | int files = SplitFilenames(filename, filenames);
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231 | cout << "number of input files: " << files << endl;
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232 | bool result = false;
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233 | if (files == 1) {
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234 |
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235 | if (strstr(filename.c_str(), ".x3d"))
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236 | parser = new X3dParser;
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237 | else
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238 | if (strstr(filename.c_str(), ".ply") || strstr(filename.c_str(), ".plb"))
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239 | parser = new PlyParser;
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240 | else if (strstr(filename.c_str(), ".obj"))
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241 | parser = new ObjParser;
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242 | else
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243 | parser = new UnigraphicsParser;
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244 |
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245 | cout << filename << endl;
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246 |
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247 | SceneGraphNode *sroot = mSceneGraph->GetRoot();
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248 |
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249 | if (mRayCastMethod == Preprocessor::INTEL_RAYCASTER)
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250 | { cout << "here5800" << endl;
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251 | result = parser->ParseFile(
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252 | filename,
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253 | &sroot,
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254 | mLoadPolygonsAsMeshes,
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255 | &mFaceParents);
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256 | }
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257 | else
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258 | { cout << "here776645" << endl;
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259 | result = parser->ParseFile(filename, &sroot, mLoadPolygonsAsMeshes);
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260 | }
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261 | cout << "here98809845" << endl;
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262 | delete parser;
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263 |
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264 | } else {
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265 | // root for different files
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266 | mSceneGraph->SetRoot(new SceneGraphNode());
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267 | for (int i= 0; i < filenames.size(); i++) {
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268 | if (strstr(filenames[i].c_str(), ".x3d"))
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269 | parser = new X3dParser;
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270 | else
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271 | parser = new UnigraphicsParser;
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272 |
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273 | SceneGraphNode *node;
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274 | bool success;
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275 |
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276 | if (mRayCastMethod == Preprocessor::INTEL_RAYCASTER)
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277 | { cout << "here4500" << endl;
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278 | success = parser->ParseFile(
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279 | filename,
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280 | &node,
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281 | mLoadPolygonsAsMeshes,
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282 | &mFaceParents);
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283 | }
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284 | else
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285 | {
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286 | cout << "here45" << endl;
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287 | success = parser->ParseFile(filename, &node, mLoadPolygonsAsMeshes);
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288 | }
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289 |
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290 | if (success)
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291 | { cout << "here4509999" << endl;
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292 | mSceneGraph->GetRoot()->mChildren.push_back(node);
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293 | // at least one file parsed
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294 | result = true;
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295 | }
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296 |
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297 | delete parser;
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298 | }
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299 | }
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300 | cout << "here8888" << endl;
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301 |
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302 | if (result)
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303 | { cout << "here199" << endl;
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304 | // HACK
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305 | if (ADDITIONAL_GEOMETRY_HACK)
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306 | AddGeometry(mSceneGraph);
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307 |
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308 | mSceneGraph->AssignObjectIds();
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309 | cout << "here99" << endl;
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310 | int intersectables, faces;
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311 | mSceneGraph->GetStatistics(intersectables, faces);
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312 | cout << "here999" << endl;
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313 | cout<<filename<<" parsed successfully."<<endl;
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314 | cout<<"#NUM_OBJECTS (Total numner of objects)\n"<<intersectables<<endl;
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315 | cout<<"#NUM_FACES (Total numner of faces)\n"<<faces<<endl;
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316 | mSceneGraph->CollectObjects(&mObjects);
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317 | mSceneGraph->GetRoot()->UpdateBox();
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318 | cout << "here9999" << endl;
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319 | if (0)
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320 | {
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321 | Exporter *exporter = Exporter::GetExporter("testload.x3d");
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322 | if (exporter)
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323 | {
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324 | exporter->ExportGeometry(mObjects);
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325 | delete exporter;
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326 | }
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327 | }
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328 | }
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329 |
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330 | return result;
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331 | }
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332 |
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333 | bool
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334 | Preprocessor::ExportPreprocessedData(const string filename)
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335 | {
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336 |
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337 | mViewCellsManager->ExportViewCells(filename, true, mObjects);
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338 |
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339 | return true;
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340 | }
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341 |
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342 | bool
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343 | Preprocessor::PostProcessVisibility()
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344 | {
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345 |
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346 | if (mApplyVisibilityFilter || mApplyVisibilitySpatialFilter) {
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347 | cout<<"Applying visibility filter ...";
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348 | cout<<"filter width = " << mVisibilityFilterWidth << endl;
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349 |
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350 | if (!mViewCellsManager)
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351 | return false;
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352 |
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353 | mViewCellsManager->ApplyFilter(mKdTree,
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354 | mApplyVisibilityFilter ? mVisibilityFilterWidth : -1.0f,
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355 | mApplyVisibilitySpatialFilter ? mVisibilityFilterWidth : -1.0f);
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356 | cout << "done." << endl;
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357 | }
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358 |
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359 | // export the preprocessed information to a file
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360 | if (mExportVisibility)
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361 | ExportPreprocessedData(mVisibilityFileName);
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362 |
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363 | return true;
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364 | }
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365 |
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366 |
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367 | bool
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368 | Preprocessor::BuildKdTree()
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369 | {
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370 | mKdTree = new KdTree;
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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 | cout << "here3.95" << endl;
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374 | mSceneGraph->CollectObjects(&root->mObjects);
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375 | cout << "here3.97" << endl;
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376 | long startTime = GetTime();
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377 |
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378 | cout << "building kd tree ... " << endl;
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379 | mKdTree->Construct();
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380 | cout << "construction finished in " << TimeDiff(startTime, GetTime()) * 1e-3 << " secs " << endl;
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381 | return true;
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382 | }
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383 |
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384 | void
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385 | Preprocessor::KdTreeStatistics(ostream &s)
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386 | {
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387 | s<<mKdTree->GetStatistics();
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388 | }
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389 |
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390 | void
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391 | Preprocessor::BspTreeStatistics(ostream &s)
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392 | {
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393 | s << mBspTree->GetStatistics();
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394 | }
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395 |
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396 | bool
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397 | Preprocessor::Export( const string filename,
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398 | const bool scene,
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399 | const bool kdtree,
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400 | const bool bsptree
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401 | )
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402 | {
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403 | Exporter *exporter = Exporter::GetExporter(filename);
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404 |
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405 | if (exporter) {
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406 | if (scene)
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407 | exporter->ExportScene(mSceneGraph->GetRoot());
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408 |
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409 | if (kdtree) {
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410 | exporter->SetWireframe();
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411 | exporter->ExportKdTree(*mKdTree);
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412 | }
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413 |
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414 | if (bsptree) {
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415 | //exporter->SetWireframe();
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416 | exporter->ExportBspTree(*mBspTree);
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417 | }
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418 |
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419 | delete exporter;
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420 | return true;
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421 | }
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422 |
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423 | return false;
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424 | }
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425 |
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426 |
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427 | bool Preprocessor::PrepareViewCells()
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428 | {
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429 | //-- parse view cells construction method
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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 | mViewCellsManager = ViewCellsManager::LoadViewCells(buf, &mObjects, true);
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438 | }
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439 | else
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440 | {
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441 | // parse type of view cell container
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442 | Environment::GetSingleton()->GetStringValue("ViewCells.type", buf);
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443 | mViewCellsManager = CreateViewCellsManager(buf);
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444 |
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445 | // default view space is the extent of the scene
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446 | mViewCellsManager->SetViewSpaceBox(mSceneGraph->GetBox());
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447 | }
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448 |
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449 | //-- parameters for render heuristics evaluation
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450 | float objRenderCost = 0, vcOverhead = 0, moveSpeed = 0;
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451 |
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452 | Environment::GetSingleton()->GetFloatValue("Simulation.objRenderCost",objRenderCost);
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453 | Environment::GetSingleton()->GetFloatValue("Simulation.vcOverhead", vcOverhead);
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454 | Environment::GetSingleton()->GetFloatValue("Simulation.moveSpeed", moveSpeed);
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455 |
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456 | mRenderSimulator =
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457 | new RenderSimulator(mViewCellsManager, objRenderCost, vcOverhead, moveSpeed);
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458 |
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459 | mViewCellsManager->SetRenderer(mRenderSimulator);
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460 |
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461 |
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462 | if (mUseGlRenderer || mUseGlDebugger)
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463 | {
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464 | // NOTE: render texture should be power of 2 and square
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465 | // renderer must be initialised
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466 | // $$matt
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467 | // renderer = new GlRendererBuffer(1024, 768, mSceneGraph, mViewCellsManager, mKdTree);
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468 | // renderer->makeCurrent();
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469 |
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470 | }
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471 |
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472 | return true;
|
---|
473 | }
|
---|
474 |
|
---|
475 |
|
---|
476 | bool
|
---|
477 | Preprocessor::ConstructViewCells()
|
---|
478 | {
|
---|
479 | // if not already loaded, construct view cells from file
|
---|
480 | if (!mLoadViewCells) {
|
---|
481 | mViewCellsManager->SetViewSpaceBox(mKdTree->GetBox());
|
---|
482 |
|
---|
483 | // construct view cells using it's own set of samples
|
---|
484 | mViewCellsManager->Construct(this);
|
---|
485 |
|
---|
486 | //-- several visualizations and statistics
|
---|
487 | Debug << "view cells construction finished: " << endl;
|
---|
488 | mViewCellsManager->PrintStatistics(Debug);
|
---|
489 | }
|
---|
490 | return true;
|
---|
491 | }
|
---|
492 |
|
---|
493 |
|
---|
494 | HierarchyManager *Preprocessor::CreateHierarchyManager(const char *name)
|
---|
495 | {
|
---|
496 | HierarchyManager *hierarchyManager;
|
---|
497 |
|
---|
498 | if (strcmp(name, "osp") == 0)
|
---|
499 | {
|
---|
500 | Debug << "hierarchy manager: osp" << endl;
|
---|
501 | // HACK for testing if per kd evaluation works!!
|
---|
502 | const bool ishack = false;
|
---|
503 | if (ishack)
|
---|
504 | hierarchyManager = new HierarchyManager(mVspTree, mKdTree);
|
---|
505 | else
|
---|
506 | hierarchyManager = new HierarchyManager(mVspTree, HierarchyManager::KD_BASED_OBJ_SUBDIV);
|
---|
507 | }
|
---|
508 | else if (strcmp(name, "bvh") == 0)
|
---|
509 | {
|
---|
510 | Debug << "hierarchy manager: bvh" << endl;
|
---|
511 | hierarchyManager = new HierarchyManager(mVspTree, HierarchyManager::BV_BASED_OBJ_SUBDIV);
|
---|
512 | }
|
---|
513 | else // only view space partition
|
---|
514 | {
|
---|
515 | Debug << "hierarchy manager: obj" << endl;
|
---|
516 | hierarchyManager = new HierarchyManager(mVspTree, HierarchyManager::NO_OBJ_SUBDIV);
|
---|
517 | }
|
---|
518 |
|
---|
519 | return hierarchyManager;
|
---|
520 | }
|
---|
521 |
|
---|
522 |
|
---|
523 | ViewCellsManager *Preprocessor::CreateViewCellsManager(const char *name)
|
---|
524 | {
|
---|
525 | ViewCellsTree *vcTree = new ViewCellsTree;
|
---|
526 |
|
---|
527 | if (strcmp(name, "kdTree") == 0)
|
---|
528 | {
|
---|
529 | mViewCellsManager = new KdViewCellsManager(vcTree, mKdTree);
|
---|
530 | }
|
---|
531 | else if (strcmp(name, "bspTree") == 0)
|
---|
532 | {
|
---|
533 | Debug << "view cell type: Bsp" << endl;
|
---|
534 |
|
---|
535 | mBspTree = new BspTree();
|
---|
536 | mViewCellsManager = new BspViewCellsManager(vcTree, mBspTree);
|
---|
537 | }
|
---|
538 | else if (strcmp(name, "vspBspTree") == 0)
|
---|
539 | {
|
---|
540 | Debug << "view cell type: VspBsp" << endl;
|
---|
541 |
|
---|
542 | mVspBspTree = new VspBspTree();
|
---|
543 | mViewCellsManager = new VspBspViewCellsManager(vcTree, mVspBspTree);
|
---|
544 | }
|
---|
545 | else if (strcmp(name, "vspOspTree") == 0)
|
---|
546 | {
|
---|
547 | mVspTree = new VspTree();
|
---|
548 | char buf[100];
|
---|
549 | Environment::GetSingleton()->GetStringValue("Hierarchy.type", buf);
|
---|
550 |
|
---|
551 | HierarchyManager *mHierarchyManager = CreateHierarchyManager(buf);
|
---|
552 | mViewCellsManager = new VspOspViewCellsManager(vcTree, mHierarchyManager);
|
---|
553 | }
|
---|
554 | else if (strcmp(name, "sceneDependent") == 0)
|
---|
555 | {
|
---|
556 | Debug << "view cell type: Bsp" << endl;
|
---|
557 |
|
---|
558 | //TODO
|
---|
559 | mBspTree = new BspTree();
|
---|
560 | mViewCellsManager = new BspViewCellsManager(vcTree, mBspTree);
|
---|
561 | }
|
---|
562 | else
|
---|
563 | {
|
---|
564 | cerr << "Wrong view cells type " << name << "!!!" << endl;
|
---|
565 | exit(1);
|
---|
566 | }
|
---|
567 |
|
---|
568 | return mViewCellsManager;
|
---|
569 | }
|
---|
570 |
|
---|
571 |
|
---|
572 | // use ascii format to store rays
|
---|
573 | #define USE_ASCII 0
|
---|
574 |
|
---|
575 |
|
---|
576 | static inline bool ilt(Intersectable *obj1, Intersectable *obj2)
|
---|
577 | {
|
---|
578 | return obj1->mId < obj2->mId;
|
---|
579 | }
|
---|
580 |
|
---|
581 |
|
---|
582 | bool Preprocessor::LoadKdTree()
|
---|
583 | {
|
---|
584 | return true;
|
---|
585 | }
|
---|
586 |
|
---|
587 | bool Preprocessor::ExportKdTree()
|
---|
588 | {
|
---|
589 | return true;
|
---|
590 | }
|
---|
591 |
|
---|
592 |
|
---|
593 | bool Preprocessor::LoadSamples(VssRayContainer &samples,
|
---|
594 | ObjectContainer &objects) const
|
---|
595 | {
|
---|
596 | std::stable_sort(objects.begin(), objects.end(), ilt);
|
---|
597 | char fileName[100];
|
---|
598 | Environment::GetSingleton()->GetStringValue("Preprocessor.samplesFilename", fileName);
|
---|
599 |
|
---|
600 | Vector3 origin, termination;
|
---|
601 | // HACK: needed only for lower_bound algorithm to find the
|
---|
602 | // intersected objects
|
---|
603 | MeshInstance sObj(NULL);
|
---|
604 | MeshInstance tObj(NULL);
|
---|
605 |
|
---|
606 | #if USE_ASCII
|
---|
607 | ifstream samplesIn(fileName);
|
---|
608 | if (!samplesIn.is_open())
|
---|
609 | return false;
|
---|
610 |
|
---|
611 | string buf;
|
---|
612 | while (!(getline(samplesIn, buf)).eof())
|
---|
613 | {
|
---|
614 | sscanf(buf.c_str(), "%f %f %f %f %f %f %d %d",
|
---|
615 | &origin.x, &origin.y, &origin.z,
|
---|
616 | &termination.x, &termination.y, &termination.z,
|
---|
617 | &(sObj.mId), &(tObj.mId));
|
---|
618 |
|
---|
619 | Intersectable *sourceObj = NULL;
|
---|
620 | Intersectable *termObj = NULL;
|
---|
621 |
|
---|
622 | if (sObj.mId >= 0)
|
---|
623 | {
|
---|
624 | ObjectContainer::iterator oit =
|
---|
625 | lower_bound(objects.begin(), objects.end(), &sObj, ilt);
|
---|
626 | sourceObj = *oit;
|
---|
627 | }
|
---|
628 |
|
---|
629 | if (tObj.mId >= 0)
|
---|
630 | {
|
---|
631 | ObjectContainer::iterator oit =
|
---|
632 | lower_bound(objects.begin(), objects.end(), &tObj, ilt);
|
---|
633 | termObj = *oit;
|
---|
634 | }
|
---|
635 |
|
---|
636 | samples.push_back(new VssRay(origin, termination, sourceObj, termObj));
|
---|
637 | }
|
---|
638 | #else
|
---|
639 | ifstream samplesIn(fileName, ios::binary);
|
---|
640 | if (!samplesIn.is_open())
|
---|
641 | return false;
|
---|
642 |
|
---|
643 | while (1)
|
---|
644 | {
|
---|
645 | samplesIn.read(reinterpret_cast<char *>(&origin), sizeof(Vector3));
|
---|
646 | samplesIn.read(reinterpret_cast<char *>(&termination), sizeof(Vector3));
|
---|
647 | samplesIn.read(reinterpret_cast<char *>(&(sObj.mId)), sizeof(int));
|
---|
648 | samplesIn.read(reinterpret_cast<char *>(&(tObj.mId)), sizeof(int));
|
---|
649 |
|
---|
650 | if (samplesIn.eof())
|
---|
651 | break;
|
---|
652 |
|
---|
653 | Intersectable *sourceObj = NULL;
|
---|
654 | Intersectable *termObj = NULL;
|
---|
655 |
|
---|
656 | if (sObj.mId >= 0)
|
---|
657 | {
|
---|
658 | ObjectContainer::iterator oit =
|
---|
659 | lower_bound(objects.begin(), objects.end(), &sObj, ilt);
|
---|
660 | sourceObj = *oit;
|
---|
661 | }
|
---|
662 |
|
---|
663 | if (tObj.mId >= 0)
|
---|
664 | {
|
---|
665 | ObjectContainer::iterator oit =
|
---|
666 | lower_bound(objects.begin(), objects.end(), &tObj, ilt);
|
---|
667 | termObj = *oit;
|
---|
668 | }
|
---|
669 |
|
---|
670 | samples.push_back(new VssRay(origin, termination, sourceObj, termObj));
|
---|
671 | }
|
---|
672 |
|
---|
673 | #endif
|
---|
674 | samplesIn.close();
|
---|
675 |
|
---|
676 | return true;
|
---|
677 | }
|
---|
678 |
|
---|
679 |
|
---|
680 | bool Preprocessor::ExportSamples(const VssRayContainer &samples) const
|
---|
681 | {
|
---|
682 | char fileName[100];
|
---|
683 | Environment::GetSingleton()->GetStringValue("Preprocessor.samplesFilename", fileName);
|
---|
684 |
|
---|
685 |
|
---|
686 | VssRayContainer::const_iterator it, it_end = samples.end();
|
---|
687 |
|
---|
688 | #if USE_ASCII
|
---|
689 | ofstream samplesOut(fileName);
|
---|
690 | if (!samplesOut.is_open())
|
---|
691 | return false;
|
---|
692 |
|
---|
693 | for (it = samples.begin(); it != it_end; ++ it)
|
---|
694 | {
|
---|
695 | VssRay *ray = *it;
|
---|
696 | int sourceid = ray->mOriginObject ? ray->mOriginObject->mId : -1;
|
---|
697 | int termid = ray->mTerminationObject ? ray->mTerminationObject->mId : -1;
|
---|
698 |
|
---|
699 | samplesOut << ray->GetOrigin().x << " " << ray->GetOrigin().y << " " << ray->GetOrigin().z << " "
|
---|
700 | << ray->GetTermination().x << " " << ray->GetTermination().y << " " << ray->GetTermination().z << " "
|
---|
701 | << sourceid << " " << termid << "\n";
|
---|
702 | }
|
---|
703 | #else
|
---|
704 | ofstream samplesOut(fileName, ios::binary);
|
---|
705 | if (!samplesOut.is_open())
|
---|
706 | return false;
|
---|
707 |
|
---|
708 | for (it = samples.begin(); it != it_end; ++ it)
|
---|
709 | {
|
---|
710 | VssRay *ray = *it;
|
---|
711 | Vector3 origin(ray->GetOrigin());
|
---|
712 | Vector3 termination(ray->GetTermination());
|
---|
713 |
|
---|
714 | int sourceid = ray->mOriginObject ? ray->mOriginObject->mId : -1;
|
---|
715 | int termid = ray->mTerminationObject ? ray->mTerminationObject->mId : -1;
|
---|
716 |
|
---|
717 | samplesOut.write(reinterpret_cast<char *>(&origin), sizeof(Vector3));
|
---|
718 | samplesOut.write(reinterpret_cast<char *>(&termination), sizeof(Vector3));
|
---|
719 | samplesOut.write(reinterpret_cast<char *>(&sourceid), sizeof(int));
|
---|
720 | samplesOut.write(reinterpret_cast<char *>(&termid), sizeof(int));
|
---|
721 | }
|
---|
722 | #endif
|
---|
723 | samplesOut.close();
|
---|
724 |
|
---|
725 | return true;
|
---|
726 | }
|
---|
727 |
|
---|
728 | #if 0 // matt: implemented interface samplestrategy
|
---|
729 | bool
|
---|
730 | Preprocessor::GenerateRays(
|
---|
731 | const int number,
|
---|
732 | const int sampleType,
|
---|
733 | SimpleRayContainer &rays
|
---|
734 | )
|
---|
735 | {
|
---|
736 | Vector3 origin, direction;
|
---|
737 | int startSize = (int)rays.size();
|
---|
738 | for (int i=0; (int)rays.size() - startSize < number; i ++) {
|
---|
739 | // now get the direction
|
---|
740 | switch (sampleType) {
|
---|
741 | case OBJECT_BASED_DISTRIBUTION: {
|
---|
742 | mViewCellsManager->GetViewPoint(origin);
|
---|
743 | Vector3 point;
|
---|
744 | Vector3 normal;
|
---|
745 | int i = RandomValue(0, mObjects.size() - 1);
|
---|
746 | Intersectable *object = mObjects[i];
|
---|
747 | object->GetRandomSurfacePoint(point, normal);
|
---|
748 | direction = point - origin;
|
---|
749 | }
|
---|
750 | break;
|
---|
751 | case OBJECT_DIRECTION_BASED_DISTRIBUTION: {
|
---|
752 | int i = RandomValue(0, mObjects.size() - 1);
|
---|
753 | Intersectable *object = mObjects[i];
|
---|
754 | Vector3 normal;
|
---|
755 | object->GetRandomSurfacePoint(origin, normal);
|
---|
756 | direction = UniformRandomVector(normal);
|
---|
757 | origin += 0.1f*direction;
|
---|
758 | }
|
---|
759 | break;
|
---|
760 | case DIRECTION_BASED_DISTRIBUTION:
|
---|
761 | mViewCellsManager->GetViewPoint(origin);
|
---|
762 | direction = UniformRandomVector();
|
---|
763 | break;
|
---|
764 | case DIRECTION_BOX_BASED_DISTRIBUTION: {
|
---|
765 | mViewCellsManager->GetViewPoint(origin);
|
---|
766 | float alpha = RandomValue(0.0f, 2*M_PI);
|
---|
767 | float beta = RandomValue(-M_PI/2, M_PI/2);
|
---|
768 | direction = VssRay::GetDirection(alpha, beta);
|
---|
769 | break;
|
---|
770 | }
|
---|
771 | case SPATIAL_BOX_BASED_DISTRIBUTION:
|
---|
772 | mViewCellsManager->GetViewPoint(origin);
|
---|
773 | direction = mKdTree->GetBox().GetRandomPoint() - origin;
|
---|
774 | break;
|
---|
775 | default:
|
---|
776 | // unsuported distribution type
|
---|
777 | return false;
|
---|
778 | }
|
---|
779 | // $$ jb the pdf is yet not correct for all sampling methods!
|
---|
780 | float pdf = 1.0f;
|
---|
781 | float c = Magnitude(direction);
|
---|
782 | if (c > Limits::Small) {
|
---|
783 | direction*=1.0f/c;
|
---|
784 | rays.AddRay(SimpleRay(origin, direction, pdf));
|
---|
785 | }
|
---|
786 | }
|
---|
787 | return true;
|
---|
788 | }
|
---|
789 | #endif
|
---|
790 | bool Preprocessor::GenerateRays(const int number,
|
---|
791 | const int sampleType,
|
---|
792 | SimpleRayContainer &rays)
|
---|
793 | {
|
---|
794 | Vector3 origin, direction;
|
---|
795 |
|
---|
796 | const int startSize = (int)rays.size();
|
---|
797 | SamplingStrategy *strategy = GenerateSamplingStrategy(sampleType);
|
---|
798 |
|
---|
799 | if (!strategy)
|
---|
800 | return false;
|
---|
801 |
|
---|
802 | for (int i=0; (int)rays.size() - startSize < number; ++ i)
|
---|
803 | {
|
---|
804 | SimpleRay newRay;
|
---|
805 | bool success = strategy->GenerateSample(newRay);
|
---|
806 |
|
---|
807 | if (success)
|
---|
808 | rays.AddRay(newRay);
|
---|
809 | }
|
---|
810 |
|
---|
811 | delete strategy;
|
---|
812 |
|
---|
813 | return true;
|
---|
814 | }
|
---|
815 |
|
---|
816 |
|
---|
817 | SamplingStrategy *Preprocessor::GenerateSamplingStrategy(const int strategyId) const
|
---|
818 | {
|
---|
819 | switch (strategyId)
|
---|
820 | {
|
---|
821 | case OBJECT_BASED_DISTRIBUTION:
|
---|
822 | return new ObjectBasedDistribution(*this);
|
---|
823 | case OBJECT_DIRECTION_BASED_DISTRIBUTION:
|
---|
824 | return new ObjectDirectionBasedDistribution(*this);
|
---|
825 | case DIRECTION_BASED_DISTRIBUTION:
|
---|
826 | return new DirectionBasedDistribution(*this);
|
---|
827 | case DIRECTION_BOX_BASED_DISTRIBUTION:
|
---|
828 | return new DirectionBoxBasedDistribution(*this);
|
---|
829 | case SPATIAL_BOX_BASED_DISTRIBUTION:
|
---|
830 | return new SpatialBoxBasedDistribution(*this);
|
---|
831 | //case OBJECTS_INTERIOR_DISTRIBUTION:
|
---|
832 | // return new ObjectsInteriorDistribution(*this);
|
---|
833 | default: // no valid strategy
|
---|
834 | Debug << "warning: no valid sampling strategy" << endl;
|
---|
835 | return NULL;
|
---|
836 | }
|
---|
837 |
|
---|
838 | // should never come here
|
---|
839 | return NULL;
|
---|
840 | }
|
---|
841 |
|
---|
842 |
|
---|
843 | bool Preprocessor::InitRayCast(const string externKdTree)
|
---|
844 | {
|
---|
845 | switch (mRayCastMethod) // use intel ray tracing
|
---|
846 | {
|
---|
847 | case INTEL_RAYCASTER:
|
---|
848 | #ifdef GTP_INTERNAL
|
---|
849 | cout<<"Ray Cast file: "<<externKdTree<<endl;
|
---|
850 | return mlrtaLoadAS(externKdTree.c_str());
|
---|
851 | #endif
|
---|
852 | case INTERNAL_RAYCASTER:
|
---|
853 | default:
|
---|
854 | break;
|
---|
855 | }
|
---|
856 |
|
---|
857 | return true;
|
---|
858 | }
|
---|
859 |
|
---|
860 |
|
---|
861 | int Preprocessor::CastIntelDoubleRay(
|
---|
862 | const Vector3 &viewPoint,
|
---|
863 | const Vector3 &direction,
|
---|
864 | const float probability,
|
---|
865 | VssRayContainer &vssRays,
|
---|
866 | const AxisAlignedBox3 &box
|
---|
867 | )
|
---|
868 | {
|
---|
869 | #ifdef GTP_INTERNAL
|
---|
870 | VssRay *vssRay = NULL;
|
---|
871 | int hits = 0;
|
---|
872 | int hittriangle;
|
---|
873 | Vector3 pointA, pointB;
|
---|
874 | Vector3 normalA, normalB;
|
---|
875 | Intersectable *objectA = NULL, *objectB = NULL;
|
---|
876 | float dist;
|
---|
877 |
|
---|
878 | double normal[3];
|
---|
879 |
|
---|
880 | hittriangle = mlrtaIntersectAS(&viewPoint.x,
|
---|
881 | &direction.x,
|
---|
882 | normal,
|
---|
883 | dist);
|
---|
884 |
|
---|
885 | if (hittriangle !=-1 ) {
|
---|
886 | if (hittriangle >= mFaceParents.size())
|
---|
887 | cerr<<"Warning: triangle index out of range! "<<hittriangle<<endl;
|
---|
888 | else {
|
---|
889 | objectA = mFaceParents[hittriangle].mObject;
|
---|
890 | normalA = Vector3(normal[0], normal[1], normal[2]);
|
---|
891 | // Get the normal of that face
|
---|
892 | // Mesh *mesh = ((MeshInstance *)objectA)->GetMesh();
|
---|
893 | // normalA = mesh->GetFacePlane(mFaceParents[forward_hit_triangles[i]].mFaceIndex).mNormal;
|
---|
894 | //-rays[index+i].mDirection; // $$ temporary
|
---|
895 | pointA = viewPoint + direction*dist;
|
---|
896 | }
|
---|
897 | }
|
---|
898 |
|
---|
899 |
|
---|
900 | Vector3 dir = -direction;
|
---|
901 | hittriangle = mlrtaIntersectAS(&viewPoint.x,
|
---|
902 | &dir.x,
|
---|
903 | normal,
|
---|
904 | dist);
|
---|
905 |
|
---|
906 | if (hittriangle !=-1 ) {
|
---|
907 | if (hittriangle >= mFaceParents.size())
|
---|
908 | cerr<<"Warning: traingle index out of range! "<<hittriangle<<endl;
|
---|
909 | else {
|
---|
910 | objectB = mFaceParents[hittriangle].mObject;
|
---|
911 | normalB = Vector3(normal[0], normal[1], normal[2]);
|
---|
912 | // Get the normal of that face
|
---|
913 | // Mesh *mesh = ((MeshInstance *)objectB)->GetMesh();
|
---|
914 | // normalA = mesh->GetFacePlane(mFaceParents[forward_hit_triangles[i]].mFaceIndex).mNormal;
|
---|
915 | //-rays[index+i].mDirection; // $$ temporary
|
---|
916 | pointB = viewPoint + dir*dist;
|
---|
917 | }
|
---|
918 | }
|
---|
919 |
|
---|
920 | return ProcessRay(viewPoint,
|
---|
921 | direction,
|
---|
922 | objectA, pointA, normalA,
|
---|
923 | objectB, pointB, normalB,
|
---|
924 | probability,
|
---|
925 | vssRays,
|
---|
926 | box
|
---|
927 | );
|
---|
928 | #else
|
---|
929 | return -1;
|
---|
930 | #endif
|
---|
931 | }
|
---|
932 |
|
---|
933 |
|
---|
934 | Intersectable *Preprocessor::CastIntelSingleRay(const Vector3 &viewPoint,
|
---|
935 | const Vector3 &direction,
|
---|
936 | //const float probability,
|
---|
937 | Vector3 &tPoint,
|
---|
938 | const AxisAlignedBox3 &box
|
---|
939 | )
|
---|
940 | {
|
---|
941 | AxisAlignedBox3 sbox = box;
|
---|
942 | sbox.Enlarge(Vector3(-Limits::Small));
|
---|
943 |
|
---|
944 | if (!sbox.IsInside(viewPoint))
|
---|
945 | return 0;
|
---|
946 |
|
---|
947 | #ifdef GTP_INTERNAL
|
---|
948 | float pforg[3];
|
---|
949 | float pfdir[3];
|
---|
950 | double pfnorm[3];
|
---|
951 |
|
---|
952 | pforg[0] = viewPoint[0]; pforg[1] = viewPoint[1]; pforg[2] = viewPoint[2];
|
---|
953 | pfdir[0] = direction[0]; pfdir[1] = direction[1]; pfdir[2] = direction[2];
|
---|
954 |
|
---|
955 | float dist;
|
---|
956 | const int hittriangle = mlrtaIntersectAS(pforg, pfdir, pfnorm, dist);
|
---|
957 |
|
---|
958 | if (hittriangle == -1)
|
---|
959 | {
|
---|
960 | static Ray ray;
|
---|
961 | SetupRay(ray, viewPoint, direction);
|
---|
962 |
|
---|
963 | float tmin = 0, tmax;
|
---|
964 | if (box.ComputeMinMaxT(ray, &tmin, &tmax) && tmin < tmax)
|
---|
965 | {
|
---|
966 | tPoint = ray.Extrap(tmax);
|
---|
967 | }
|
---|
968 |
|
---|
969 | return NULL;
|
---|
970 | }
|
---|
971 | else {
|
---|
972 | if (hittriangle >= mFaceParents.size()) {
|
---|
973 | cerr<<"Warning: traingle index out of range! "<<hittriangle<<endl;
|
---|
974 | return NULL;
|
---|
975 | }
|
---|
976 | else {
|
---|
977 |
|
---|
978 | tPoint[0] = pforg[0] + pfdir[0] * dist;
|
---|
979 | tPoint[1] = pforg[1] + pfdir[1] * dist;
|
---|
980 | tPoint[2] = pforg[2] + pfdir[2] * dist;
|
---|
981 |
|
---|
982 | return mFaceParents[hittriangle].mObject;
|
---|
983 | }
|
---|
984 | }
|
---|
985 |
|
---|
986 | #else
|
---|
987 | const int hittriangle = -1;
|
---|
988 | return NULL;
|
---|
989 | #endif
|
---|
990 |
|
---|
991 |
|
---|
992 |
|
---|
993 | }
|
---|
994 |
|
---|
995 |
|
---|
996 | int Preprocessor::CastInternalRay(
|
---|
997 | const Vector3 &viewPoint,
|
---|
998 | const Vector3 &direction,
|
---|
999 | const float probability,
|
---|
1000 | VssRayContainer &vssRays,
|
---|
1001 | const AxisAlignedBox3 &box
|
---|
1002 | )
|
---|
1003 | {
|
---|
1004 |
|
---|
1005 | int hits = 0;
|
---|
1006 | static Ray ray;
|
---|
1007 | Intersectable *objectA, *objectB;
|
---|
1008 | Vector3 pointA, pointB;
|
---|
1009 |
|
---|
1010 | // AxisAlignedBox3 box = Union(mKdTree->GetBox(), mViewCellsManager->GetViewSpaceBox());
|
---|
1011 |
|
---|
1012 |
|
---|
1013 | AxisAlignedBox3 sbox = box;
|
---|
1014 | sbox.Enlarge(Vector3(-Limits::Small));
|
---|
1015 | if (!sbox.IsInside(viewPoint))
|
---|
1016 | return 0;
|
---|
1017 |
|
---|
1018 | SetupRay(ray, viewPoint, direction);
|
---|
1019 | ray.mFlags &= ~Ray::CULL_BACKFACES;
|
---|
1020 |
|
---|
1021 | // cast ray to KD tree to find intersection with other objects
|
---|
1022 | float bsize = Magnitude(box.Size());
|
---|
1023 |
|
---|
1024 |
|
---|
1025 | if (mKdTree->CastRay(ray)) {
|
---|
1026 | objectA = ray.intersections[0].mObject;
|
---|
1027 | pointA = ray.Extrap(ray.intersections[0].mT);
|
---|
1028 | if (mDetectEmptyViewSpace)
|
---|
1029 | if (DotProd(ray.intersections[0].mNormal, direction) >= 0) {
|
---|
1030 | // discard the sample
|
---|
1031 | return 0;
|
---|
1032 | }
|
---|
1033 |
|
---|
1034 | } else {
|
---|
1035 | objectA = NULL;
|
---|
1036 | // compute intersection with the scene bounding box
|
---|
1037 | float tmin, tmax;
|
---|
1038 | if (box.ComputeMinMaxT(ray, &tmin, &tmax) && tmin < tmax)
|
---|
1039 | pointA = ray.Extrap(tmax);
|
---|
1040 | else
|
---|
1041 | return 0;
|
---|
1042 | }
|
---|
1043 |
|
---|
1044 |
|
---|
1045 | SetupRay(ray, viewPoint, -direction);
|
---|
1046 | ray.mFlags &= ~Ray::CULL_BACKFACES;
|
---|
1047 |
|
---|
1048 | if (mKdTree->CastRay(ray)) {
|
---|
1049 | objectB = ray.intersections[0].mObject;
|
---|
1050 | pointB = ray.Extrap(ray.intersections[0].mT);
|
---|
1051 | if (mDetectEmptyViewSpace)
|
---|
1052 | if (DotProd(ray.intersections[0].mNormal, direction) <= 0) {
|
---|
1053 | // discard the sample
|
---|
1054 | return 0;
|
---|
1055 | }
|
---|
1056 | } else {
|
---|
1057 | objectB = NULL;
|
---|
1058 | float tmin, tmax;
|
---|
1059 | if (box.ComputeMinMaxT(ray, &tmin, &tmax) && tmin < tmax)
|
---|
1060 | pointB = ray.Extrap(tmax);
|
---|
1061 | else
|
---|
1062 | return 0;
|
---|
1063 | }
|
---|
1064 |
|
---|
1065 |
|
---|
1066 | VssRay *vssRay = NULL;
|
---|
1067 | bool validSample = (objectA != objectB);
|
---|
1068 | if (validSample) {
|
---|
1069 | if (objectA) {
|
---|
1070 | vssRay = new VssRay(pointB,
|
---|
1071 | pointA,
|
---|
1072 | objectB,
|
---|
1073 | objectA,
|
---|
1074 | mPass,
|
---|
1075 | probability
|
---|
1076 | );
|
---|
1077 | vssRays.push_back(vssRay);
|
---|
1078 | hits ++;
|
---|
1079 | }
|
---|
1080 |
|
---|
1081 | if (objectB) {
|
---|
1082 | vssRay = new VssRay(pointA,
|
---|
1083 | pointB,
|
---|
1084 | objectA,
|
---|
1085 | objectB,
|
---|
1086 | mPass,
|
---|
1087 | probability
|
---|
1088 | );
|
---|
1089 | vssRays.push_back(vssRay);
|
---|
1090 | hits ++;
|
---|
1091 | }
|
---|
1092 | }
|
---|
1093 |
|
---|
1094 | return hits;
|
---|
1095 | }
|
---|
1096 |
|
---|
1097 |
|
---|
1098 | int
|
---|
1099 | Preprocessor::ProcessRay(
|
---|
1100 | const Vector3 &viewPoint,
|
---|
1101 | const Vector3 &direction,
|
---|
1102 | Intersectable *objectA,
|
---|
1103 | Vector3 &pointA,
|
---|
1104 | const Vector3 &normalA,
|
---|
1105 | Intersectable *objectB,
|
---|
1106 | Vector3 &pointB,
|
---|
1107 | const Vector3 &normalB,
|
---|
1108 | const float probability,
|
---|
1109 | VssRayContainer &vssRays,
|
---|
1110 | const AxisAlignedBox3 &box
|
---|
1111 | )
|
---|
1112 | {
|
---|
1113 | int hits=0;
|
---|
1114 | #if DEBUG_RAYCAST
|
---|
1115 | Debug<<"PR ";
|
---|
1116 | #endif
|
---|
1117 | if (objectA == NULL && objectB == NULL)
|
---|
1118 | return 0;
|
---|
1119 |
|
---|
1120 | AxisAlignedBox3 sbox = box;
|
---|
1121 | sbox.Enlarge(Vector3(-Limits::Small));
|
---|
1122 |
|
---|
1123 | if (!sbox.IsInside(viewPoint))
|
---|
1124 | return 0;
|
---|
1125 |
|
---|
1126 | if (objectA == NULL) {
|
---|
1127 | // compute intersection with the scene bounding box
|
---|
1128 | static Ray ray;
|
---|
1129 | SetupRay(ray, viewPoint, direction);
|
---|
1130 |
|
---|
1131 | float tmin, tmax;
|
---|
1132 | if (box.ComputeMinMaxT(ray, &tmin, &tmax) && tmin < tmax)
|
---|
1133 | pointA = ray.Extrap(tmax);
|
---|
1134 | else
|
---|
1135 | return 0;
|
---|
1136 | } else {
|
---|
1137 | if (mDetectEmptyViewSpace)
|
---|
1138 | if (DotProd(normalA, direction) >= 0) {
|
---|
1139 | // discard the sample
|
---|
1140 | return 0;
|
---|
1141 | }
|
---|
1142 | }
|
---|
1143 |
|
---|
1144 | if (objectB == NULL) {
|
---|
1145 | // compute intersection with the scene bounding box
|
---|
1146 | static Ray ray;
|
---|
1147 | SetupRay(ray, viewPoint, -direction);
|
---|
1148 |
|
---|
1149 | float tmin, tmax;
|
---|
1150 | if (box.ComputeMinMaxT(ray, &tmin, &tmax) && tmin < tmax)
|
---|
1151 | pointB = ray.Extrap(tmax);
|
---|
1152 | else
|
---|
1153 | return 0;
|
---|
1154 | } else {
|
---|
1155 | if (mDetectEmptyViewSpace)
|
---|
1156 | if (DotProd(normalB, direction) <= 0) {
|
---|
1157 | // discard the sample
|
---|
1158 | return 0;
|
---|
1159 | }
|
---|
1160 | }
|
---|
1161 |
|
---|
1162 | VssRay *vssRay = NULL;
|
---|
1163 | bool validSample = (objectA != objectB);
|
---|
1164 | if (validSample) {
|
---|
1165 | if (objectA) {
|
---|
1166 | vssRay = new VssRay(pointB,
|
---|
1167 | pointA,
|
---|
1168 | objectB,
|
---|
1169 | objectA,
|
---|
1170 | mPass,
|
---|
1171 | probability
|
---|
1172 | );
|
---|
1173 | vssRays.push_back(vssRay);
|
---|
1174 | hits ++;
|
---|
1175 | }
|
---|
1176 |
|
---|
1177 | if (objectB) {
|
---|
1178 | vssRay = new VssRay(pointA,
|
---|
1179 | pointB,
|
---|
1180 | objectA,
|
---|
1181 | objectB,
|
---|
1182 | mPass,
|
---|
1183 | probability
|
---|
1184 | );
|
---|
1185 | vssRays.push_back(vssRay);
|
---|
1186 | hits ++;
|
---|
1187 | }
|
---|
1188 | }
|
---|
1189 |
|
---|
1190 |
|
---|
1191 | return hits;
|
---|
1192 | }
|
---|
1193 |
|
---|
1194 | void
|
---|
1195 | Preprocessor::CastRays16(const int index,
|
---|
1196 | SimpleRayContainer &rays,
|
---|
1197 | VssRayContainer &vssRays,
|
---|
1198 | const AxisAlignedBox3 &sbox)
|
---|
1199 | {
|
---|
1200 | int i;
|
---|
1201 | int num = 16;
|
---|
1202 |
|
---|
1203 | #if DEBUG_RAYCAST
|
---|
1204 | Debug<<"C16 "<<flush;
|
---|
1205 | #endif
|
---|
1206 | if (mRayCastMethod == INTEL_RAYCASTER) {
|
---|
1207 | #ifdef GTP_INTERNAL
|
---|
1208 |
|
---|
1209 | int forward_hit_triangles[16];
|
---|
1210 | float forward_dist[16];
|
---|
1211 |
|
---|
1212 | int backward_hit_triangles[16];
|
---|
1213 | float backward_dist[16];
|
---|
1214 |
|
---|
1215 |
|
---|
1216 |
|
---|
1217 |
|
---|
1218 | Vector3 min = sbox.Min();
|
---|
1219 | Vector3 max = sbox.Max();
|
---|
1220 | for (i=0; i < num; i++) {
|
---|
1221 | mlrtaStoreRayAS16(&rays[index + i].mOrigin.x,
|
---|
1222 | &rays[index + i].mDirection.x,
|
---|
1223 | i);
|
---|
1224 | }
|
---|
1225 |
|
---|
1226 |
|
---|
1227 | mlrtaTraverseGroupAS16(&min.x,
|
---|
1228 | &max.x,
|
---|
1229 | forward_hit_triangles,
|
---|
1230 | forward_dist);
|
---|
1231 |
|
---|
1232 | for (i=0; i < num; i++) {
|
---|
1233 | Vector3 dir = -rays[index + i].mDirection;
|
---|
1234 | mlrtaStoreRayAS16(&rays[index+i].mOrigin.x,
|
---|
1235 | &dir.x,
|
---|
1236 | i);
|
---|
1237 | }
|
---|
1238 |
|
---|
1239 |
|
---|
1240 | mlrtaTraverseGroupAS16(&min.x,
|
---|
1241 | &max.x,
|
---|
1242 | backward_hit_triangles,
|
---|
1243 | backward_dist);
|
---|
1244 |
|
---|
1245 |
|
---|
1246 |
|
---|
1247 | for (i=0; i < num; i++) {
|
---|
1248 | Intersectable *objectA = NULL, *objectB = NULL;
|
---|
1249 | Vector3 pointA, pointB;
|
---|
1250 | Vector3 normalA, normalB;
|
---|
1251 |
|
---|
1252 |
|
---|
1253 |
|
---|
1254 | if (forward_hit_triangles[i] !=-1 ) {
|
---|
1255 | if (forward_hit_triangles[i] >= mFaceParents.size())
|
---|
1256 | cerr<<"Warning: traingle index out of range! "<<forward_hit_triangles[i]<<endl;
|
---|
1257 | else {
|
---|
1258 | objectA = mFaceParents[forward_hit_triangles[i]].mObject;
|
---|
1259 | // Get the normal of that face
|
---|
1260 | Mesh *mesh = ((MeshInstance *)objectA)->GetMesh();
|
---|
1261 | normalA = mesh->GetFacePlane(mFaceParents[forward_hit_triangles[i]].mFaceIndex).mNormal;
|
---|
1262 | //-rays[index+i].mDirection; // $$ temporary
|
---|
1263 | pointA = rays[index+i].Extrap(forward_dist[i]);
|
---|
1264 | }
|
---|
1265 | }
|
---|
1266 |
|
---|
1267 | if (backward_hit_triangles[i]!=-1) {
|
---|
1268 | if (backward_hit_triangles[i] >= mFaceParents.size())
|
---|
1269 | cerr<<"Warning: traingle index out of range! "<<backward_hit_triangles[i]<<endl;
|
---|
1270 | else {
|
---|
1271 | objectB = mFaceParents[backward_hit_triangles[i]].mObject;
|
---|
1272 | Mesh *mesh = ((MeshInstance *)objectB)->GetMesh();
|
---|
1273 |
|
---|
1274 | normalB = mesh->GetFacePlane(mFaceParents[backward_hit_triangles[i]].mFaceIndex).mNormal;
|
---|
1275 |
|
---|
1276 | // normalB = rays[index+i].mDirection; // $$ temporary
|
---|
1277 | pointB = rays[index+i].Extrap(-backward_dist[i]);
|
---|
1278 | }
|
---|
1279 | }
|
---|
1280 |
|
---|
1281 | ProcessRay(rays[index+i].mOrigin,
|
---|
1282 | rays[index+i].mDirection,
|
---|
1283 | objectA, pointA, normalA,
|
---|
1284 | objectB, pointB, normalB,
|
---|
1285 | rays[index+i].mPdf,
|
---|
1286 | vssRays,
|
---|
1287 | sbox
|
---|
1288 | );
|
---|
1289 | }
|
---|
1290 | #endif
|
---|
1291 |
|
---|
1292 | } else {
|
---|
1293 |
|
---|
1294 | for (i=index; i < index + num; i++) {
|
---|
1295 | CastRay(rays[i].mOrigin,
|
---|
1296 | rays[i].mDirection,
|
---|
1297 | rays[i].mPdf,
|
---|
1298 | vssRays,
|
---|
1299 | sbox);
|
---|
1300 | }
|
---|
1301 | }
|
---|
1302 | #if DEBUG_RAYCAST
|
---|
1303 | Debug<<"C16F\n"<<flush;
|
---|
1304 | #endif
|
---|
1305 | }
|
---|
1306 |
|
---|
1307 | void
|
---|
1308 | Preprocessor::CastRays(
|
---|
1309 | SimpleRayContainer &rays,
|
---|
1310 | VssRayContainer &vssRays
|
---|
1311 | )
|
---|
1312 | {
|
---|
1313 | long t1 = GetTime();
|
---|
1314 | for (int i=0; i < rays.size(); ) {
|
---|
1315 | if (i + 16 < rays.size()) {
|
---|
1316 | CastRays16(
|
---|
1317 | i,
|
---|
1318 | rays,
|
---|
1319 | vssRays,
|
---|
1320 | mViewCellsManager->GetViewSpaceBox());
|
---|
1321 | i += 16;
|
---|
1322 | } else {
|
---|
1323 |
|
---|
1324 | CastRay(rays[i].mOrigin,
|
---|
1325 | rays[i].mDirection,
|
---|
1326 | rays[i].mPdf,
|
---|
1327 | vssRays,
|
---|
1328 | mViewCellsManager->GetViewSpaceBox());
|
---|
1329 |
|
---|
1330 | i++;
|
---|
1331 | }
|
---|
1332 | if (i % 10000 == 0)
|
---|
1333 | cout<<".";
|
---|
1334 | }
|
---|
1335 |
|
---|
1336 | long t2 = GetTime();
|
---|
1337 |
|
---|
1338 | cout<<2*rays.size()/(1e3*TimeDiff(t1, t2))<<"M rays/s"<<endl;
|
---|
1339 | }
|
---|
1340 |
|
---|
1341 | Intersectable *
|
---|
1342 | Preprocessor::CastSimpleRay(
|
---|
1343 | const Vector3 &viewPoint,
|
---|
1344 | const Vector3 &direction,
|
---|
1345 | const AxisAlignedBox3 &box,
|
---|
1346 | Vector3 &point,
|
---|
1347 | Vector3 &normal
|
---|
1348 | )
|
---|
1349 | {
|
---|
1350 | Intersectable *result = NULL;
|
---|
1351 | switch (mRayCastMethod)
|
---|
1352 | {
|
---|
1353 | case INTEL_RAYCASTER: {
|
---|
1354 |
|
---|
1355 | int hittriangle;
|
---|
1356 |
|
---|
1357 |
|
---|
1358 | #ifdef GTP_INTERNAL
|
---|
1359 | float dist;
|
---|
1360 | double n[3];
|
---|
1361 |
|
---|
1362 | hittriangle = mlrtaIntersectAS(&viewPoint.x,
|
---|
1363 | &direction.x,
|
---|
1364 | n,
|
---|
1365 | dist);
|
---|
1366 |
|
---|
1367 | if (hittriangle !=-1 ) {
|
---|
1368 | if (hittriangle >= mFaceParents.size())
|
---|
1369 | cerr<<"Warning: traingle index out of range! "<<hittriangle<<endl;
|
---|
1370 | else {
|
---|
1371 | result = mFaceParents[hittriangle].mObject;
|
---|
1372 | normal = Vector3(n[0], n[1], n[2]);
|
---|
1373 | point = viewPoint + direction*dist;
|
---|
1374 | }
|
---|
1375 | }
|
---|
1376 | #else
|
---|
1377 | hittriangle = -1;
|
---|
1378 | #endif
|
---|
1379 |
|
---|
1380 |
|
---|
1381 | break;
|
---|
1382 | }
|
---|
1383 | case INTERNAL_RAYCASTER:
|
---|
1384 | default: {
|
---|
1385 | static Ray ray;
|
---|
1386 |
|
---|
1387 | ray.intersections.clear();
|
---|
1388 | // do not store anything else then intersections at the ray
|
---|
1389 | ray.Init(viewPoint, direction, Ray::LOCAL_RAY);
|
---|
1390 |
|
---|
1391 | ray.mFlags &= ~Ray::CULL_BACKFACES;
|
---|
1392 |
|
---|
1393 | if (mKdTree->CastRay(ray)) {
|
---|
1394 | result = ray.intersections[0].mObject;
|
---|
1395 | point = ray.Extrap(ray.intersections[0].mT);
|
---|
1396 | normal = ray.intersections[0].mNormal;
|
---|
1397 | }
|
---|
1398 | break;
|
---|
1399 | }
|
---|
1400 | }
|
---|
1401 | return result;
|
---|
1402 | }
|
---|
1403 |
|
---|
1404 | int
|
---|
1405 | Preprocessor::CastRay(
|
---|
1406 | const Vector3 &viewPoint,
|
---|
1407 | const Vector3 &direction,
|
---|
1408 | const float probability,
|
---|
1409 | VssRayContainer &vssRays,
|
---|
1410 | const AxisAlignedBox3 &box
|
---|
1411 | )
|
---|
1412 | {
|
---|
1413 | #if DEBUG_RAYCAST
|
---|
1414 | Debug<<"CR "<<flush;
|
---|
1415 | #endif
|
---|
1416 | switch (mRayCastMethod)
|
---|
1417 | {
|
---|
1418 | case INTEL_RAYCASTER:
|
---|
1419 | return CastIntelDoubleRay(viewPoint, direction, probability, vssRays, box);
|
---|
1420 | case INTERNAL_RAYCASTER:
|
---|
1421 | default:
|
---|
1422 | return CastInternalRay(viewPoint, direction, probability, vssRays, box);
|
---|
1423 | }
|
---|
1424 | #if DEBUG_RAYCAST
|
---|
1425 | Debug<<"CRF "<<flush;
|
---|
1426 | #endif
|
---|
1427 | }
|
---|
1428 |
|
---|
1429 |
|
---|
1430 | void Preprocessor::SetupRay(Ray &ray,
|
---|
1431 | const Vector3 &point,
|
---|
1432 | const Vector3 &direction
|
---|
1433 | )
|
---|
1434 | {
|
---|
1435 | ray.Clear();
|
---|
1436 | // do not store anything else then intersections at the ray
|
---|
1437 | ray.Init(point, direction, Ray::LOCAL_RAY);
|
---|
1438 | }
|
---|
1439 |
|
---|
1440 | }
|
---|