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 | |
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9 | |
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10 | bool |
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11 | Preprocessor::LoadViewcells(const string filename) |
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12 | { |
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13 | |
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14 | return true; |
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15 | } |
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16 | |
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17 | bool |
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18 | Preprocessor::GenerateViewcells() |
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19 | { |
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20 | return BuildBspTree(); |
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21 | } |
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22 | |
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23 | bool |
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24 | Preprocessor::LoadScene(const string filename) |
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25 | { |
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26 | // use leaf nodes of the original spatial hiearrchy as occludees |
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27 | |
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28 | mSceneGraph = new SceneGraph; |
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29 | |
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30 | |
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31 | Parser *parser; |
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32 | |
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33 | if (strstr(filename.c_str(), ".x3d")) |
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34 | parser = new X3dParser; |
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35 | else |
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36 | parser = new UnigraphicsParser; |
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37 | |
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38 | bool result = parser->ParseFile(filename, &mSceneGraph->mRoot); |
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39 | |
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40 | return result; |
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41 | } |
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42 | |
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43 | bool |
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44 | Preprocessor::ExportPreprocessedData(const string filename) |
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45 | { |
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46 | return false; |
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47 | } |
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48 | |
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49 | bool |
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50 | Preprocessor::BuildKdTree() |
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51 | { |
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52 | mKdTree = new KdTree; |
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53 | // add mesh instances of the scene graph to the root of the tree |
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54 | KdLeaf *root = (KdLeaf *)mKdTree->GetRoot(); |
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55 | mSceneGraph->CollectObjects(&root->mObjects); |
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56 | |
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57 | mKdTree->Construct(); |
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58 | return true; |
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59 | } |
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60 | |
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61 | bool |
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62 | Preprocessor::BuildBspTree() |
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63 | { |
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64 | ObjectContainer objects; |
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65 | mSceneGraph->CollectObjects(&objects); |
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66 | |
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67 | mBspTree = new BspTree(); |
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68 | |
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69 | char constructionMethodStr[64]; |
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70 | |
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71 | environment->GetStringValue("BspTree.constructionMethod",
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72 | constructionMethodStr); |
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73 | |
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74 | int constructionMethod = BspTree::VIEWCELLS; |
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75 | |
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76 | if (strcmp(constructionMethodStr, "viewCells") == 0) |
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77 | constructionMethod = BspTree::VIEWCELLS; |
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78 | else if (strcmp(constructionMethodStr, "sceneGeometry") == 0) |
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79 | constructionMethod = BspTree::SCENE_GEOMETRY; |
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80 | else |
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81 | { |
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82 | cerr << "Wrong bsp construction method " << constructionMethodStr << endl; |
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83 | exit(1); |
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84 | } |
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85 | |
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86 | Debug << constructionMethodStr << endl; |
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87 | |
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88 | switch (constructionMethod) |
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89 | { |
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90 | case BspTree::VIEWCELLS: |
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91 | mViewcells.clear(); |
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92 | // derive viewcells from the scene objects |
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93 | ViewCell::DeriveViewCells(objects, mViewcells, 1000); |
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94 | mBspTree->Construct(mViewcells); |
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95 | break; |
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96 | case BspTree::SCENE_GEOMETRY: |
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97 | mBspTree->Construct(objects); |
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98 | break; |
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99 | default: |
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100 | break; |
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101 | } |
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102 | return true; |
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103 | } |
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104 | |
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105 | |
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106 | |
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107 | void |
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108 | Preprocessor::KdTreeStatistics(ostream &s) |
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109 | { |
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110 | s<<mKdTree->GetStatistics(); |
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111 | } |
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112 | |
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113 | void |
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114 | Preprocessor::BspTreeStatistics(ostream &s) |
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115 | { |
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116 | s << mBspTree->GetStatistics(); |
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117 | } |
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118 | |
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119 | bool |
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120 | Preprocessor::Export( const string filename, |
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121 | const bool scene, |
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122 | const bool kdtree |
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123 | ) |
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124 | { |
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125 | Exporter *exporter = Exporter::GetExporter(filename); |
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126 | |
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127 | if (exporter) { |
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128 | if (scene) |
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129 | exporter->ExportScene(mSceneGraph->mRoot); |
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130 | |
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131 | if (kdtree) { |
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132 | exporter->SetWireframe(); |
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133 | exporter->ExportKdTree(*mKdTree); |
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134 | } |
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135 | |
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136 | delete exporter; |
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137 | return true; |
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138 | } |
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139 | |
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140 | return false; |
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141 | } |
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142 | |
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143 | |
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144 | |
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