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 "RenderSimulator.h"
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9 |
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10 | Preprocessor::Preprocessor():
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11 | mKdTree(NULL),
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12 | mBspTree(NULL),
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13 | mRenderSimulator(NULL)
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14 | {
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15 | }
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16 |
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17 |
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18 | Preprocessor::~Preprocessor()
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19 | {
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20 | DeleteViewCells();
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21 |
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22 | DEL_PTR(mBspTree);
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23 | DEL_PTR(mKdTree);
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24 |
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25 | DEL_PTR(mRenderSimulator);
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26 | }
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27 |
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28 | bool
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29 | Preprocessor::LoadViewCells(const string filename)
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30 | {
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31 | X3dParser parser;
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32 | int maxViewCells = 0;
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33 | environment->GetFloatValue("ViewCells.height", parser.mViewCellHeight);
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34 | environment->GetIntValue("ViewCells.maxViewCells", maxViewCells);
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35 |
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36 | bool loaded = parser.ParseFile(filename, mViewCells);
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37 |
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38 | if (maxViewCells > 0)
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39 | {
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40 | while (mViewCells.size() > maxViewCells)
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41 | {
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42 | ViewCell *vc = mViewCells.back();
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43 | DEL_PTR(vc);
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44 | mViewCells.pop_back();
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45 | }
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46 | }
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47 | return loaded;
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48 | }
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49 |
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50 | bool
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51 | Preprocessor::ParseViewCellsOptions()
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52 | {
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53 | // parse type of view cells
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54 | char viewCellsStr[64];
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55 | environment->GetStringValue("ViewCells.hierarchy", viewCellsStr);
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56 |
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57 | if (strcmp(viewCellsStr, "bspTree") == 0)
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58 | {
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59 | ViewCell::sHierarchy = ViewCell::BSP;
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60 | }
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61 | else if (strcmp(viewCellsStr, "kdTree") == 0)
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62 | {
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63 | ViewCell::sHierarchy = ViewCell::KD;
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64 | }
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65 | else if (strcmp(viewCellsStr, "sceneDependent") == 0)
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66 | {
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67 | //TODO
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68 | }
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69 | else
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70 | {
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71 | cerr<<"Wrong view cells type" << viewCellsStr << endl;
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72 | exit(1);
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73 | }
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74 |
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75 | return true;
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76 | }
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77 |
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78 | RenderSimulator *Preprocessor::GetRenderSimulator()
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79 | {
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80 | if (mRenderSimulator)
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81 | return mRenderSimulator;
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82 |
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83 | float objRenderCost = 0, vcOverhead = 0, moveSpeed = 0;
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84 |
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85 | environment->GetFloatValue("Simulation.objRenderCost",objRenderCost);
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86 | environment->GetFloatValue("Simulation.vcOverhead", vcOverhead);
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87 | environment->GetFloatValue("Simulation.moveSpeed", moveSpeed);
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88 |
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89 | Debug << "render simulator using render cost=" << objRenderCost << ", vc overhead=" << vcOverhead << ", move speed=" << moveSpeed << endl;
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90 | if (ViewCell::sHierarchy = ViewCell::BSP)
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91 | mRenderSimulator = new BspViewCellRenderSimulator(objRenderCost, vcOverhead, moveSpeed, mBspTree);
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92 | else // KD view cells
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93 | mRenderSimulator = new KdViewCellRenderSimulator(objRenderCost, vcOverhead, moveSpeed, mKdTree);
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94 |
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95 | return mRenderSimulator;
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96 | }
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97 |
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98 | void Preprocessor::DeleteViewCells()
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99 | {
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100 | for (int i = 0; i < (int)mViewCells.size(); ++ i)
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101 | {
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102 | Mesh *mesh = mViewCells[i]->GetMesh();
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103 | DEL_PTR(mesh);
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104 | }
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105 | CLEAR_CONTAINER(mViewCells);
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106 | }
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107 |
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108 | bool
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109 | Preprocessor::GenerateViewCells()
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110 | {
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111 | // TODO
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112 | // HACK: derive view cells from the scene objects
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113 | ObjectContainer objects;
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114 |
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115 | int maxViewCells = 0;
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116 | environment->GetIntValue("ViewCells.maxViewCells", maxViewCells);
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117 |
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118 | mSceneGraph->CollectObjects(&objects);
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119 | ViewCell::DeriveViewCells(objects, mViewCells, maxViewCells);
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120 |
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121 | return true;
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122 | }
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123 |
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124 | int
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125 | SplitFilenames(const string str,
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126 | vector<string> &filenames)
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127 | {
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128 | int pos = 0;
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129 |
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130 | while(1) {
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131 | int npos = str.find(';', pos);
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132 |
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133 | if (npos < 0 || npos - pos < 1)
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134 | break;
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135 | filenames.push_back(string(str, pos, npos - pos));
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136 | pos = npos + 1;
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137 | }
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138 |
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139 | filenames.push_back(string(str, pos, str.size() - pos));
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140 | return filenames.size();
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141 | }
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142 |
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143 | bool
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144 | Preprocessor::LoadScene(const string filename)
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145 | {
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146 | // use leaf nodes of the original spatial hiearrchy as occludees
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147 |
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148 | mSceneGraph = new SceneGraph;
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149 |
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150 |
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151 | Parser *parser;
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152 | vector<string> filenames;
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153 | int files = SplitFilenames(filename, filenames);
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154 | cout<<files<<endl;
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155 | bool result = false;
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156 | if (files == 1) {
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157 |
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158 | if (strstr(filename.c_str(), ".x3d"))
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159 | parser = new X3dParser;
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160 | else
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161 | parser = new UnigraphicsParser;
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162 |
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163 | cout<<filename<<endl;
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164 | result = parser->ParseFile(filename, &mSceneGraph->mRoot);
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165 |
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166 | delete parser;
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167 |
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168 | } else {
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169 | // root for different files
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170 | mSceneGraph->mRoot = new SceneGraphNode;
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171 | for (int i= 0; i < filenames.size(); i++) {
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172 | if (strstr(filenames[i].c_str(), ".x3d"))
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173 | parser = new X3dParser;
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174 | else
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175 | parser = new UnigraphicsParser;
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176 |
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177 | SceneGraphNode *node;
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178 | if (parser->ParseFile(filenames[i], &node)) {
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179 | mSceneGraph->mRoot->mChildren.push_back(node);
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180 | // at least one file parsed
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181 | result = true;
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182 | }
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183 | delete parser;
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184 | }
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185 | }
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186 |
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187 |
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188 | if (result) {
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189 | mSceneGraph->AssignObjectIds();
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190 | int intersectables, faces;
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191 | mSceneGraph->GetStatistics(intersectables, faces);
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192 | cout<<filename<<" parsed successfully."<<endl;
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193 | cout<<"#NUM_OBJECTS (Total numner of objects)\n"<<intersectables<<endl;
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194 | cout<<"#NUM_FACES (Total numner of faces)\n"<<faces<<endl;
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195 | }
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196 |
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197 |
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198 | return result;
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199 | }
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200 |
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201 | bool
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202 | Preprocessor::ExportPreprocessedData(const string filename)
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203 | {
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204 | return false;
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205 | }
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206 |
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207 | bool
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208 | Preprocessor::BuildKdTree()
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209 | {
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210 | mKdTree = new KdTree;
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211 | // add mesh instances of the scene graph to the root of the tree
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212 | KdLeaf *root = (KdLeaf *)mKdTree->GetRoot();
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213 | mSceneGraph->CollectObjects(&root->mObjects);
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214 |
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215 | mKdTree->Construct();
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216 | return true;
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217 | }
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218 |
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219 | void
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220 | Preprocessor::KdTreeStatistics(ostream &s)
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221 | {
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222 | s<<mKdTree->GetStatistics();
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223 | }
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224 |
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225 | void
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226 | Preprocessor::BspTreeStatistics(ostream &s)
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227 | {
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228 | s << mBspTree->GetStatistics();
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229 | }
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230 |
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231 | bool
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232 | Preprocessor::Export( const string filename,
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233 | const bool scene,
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234 | const bool kdtree,
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235 | const bool bsptree
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236 | )
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237 | {
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238 | Exporter *exporter = Exporter::GetExporter(filename);
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239 |
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240 | if (exporter) {
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241 | if (scene)
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242 | exporter->ExportScene(mSceneGraph->mRoot);
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243 |
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244 | if (kdtree) {
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245 | exporter->SetWireframe();
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246 | exporter->ExportKdTree(*mKdTree);
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247 | }
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248 |
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249 | if (bsptree) {
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250 | //exporter->SetWireframe();
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251 | exporter->ExportBspTree(*mBspTree);
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252 | }
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253 |
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254 | delete exporter;
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255 | return true;
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256 | }
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257 |
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258 | return false;
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259 | }
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