1 | #include "ObjReader.h"
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2 | #include "gzstream.h"
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3 | #include "Triangle3.h"
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4 | #include "IntersectableWrapper.h"
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5 | #include "BvHierarchy.h"
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6 | #include "Preprocessor.h"
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7 | #include "OgreEntity.h"
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8 | #include "PreprocessorFactory.h"
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9 | #include "OgreLogManager.h"
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10 |
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11 |
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12 |
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13 | ObjReader::ObjReader(Ogre::SceneManager *sceneManager):
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14 | mSceneManager(sceneManager)
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15 | {}
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16 |
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17 |
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18 | ObjReader::~ObjReader()
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19 | {}
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20 |
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21 |
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22 | bool ObjReader::LoadFile(const string &sceneName,
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23 | const string &visibilitySolution,
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24 | Ogre::SceneNode *root)
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25 | {
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26 | GtpVisibilityPreprocessor::Debug.open("debug.log");
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27 | // HACK: get any preprocessor to load file
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28 | GtpVisibilityPreprocessor::Preprocessor *preprocessor =
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29 | GtpVisibilityPreprocessor::PreprocessorFactory::CreatePreprocessor("vss");
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30 |
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31 | // hack
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32 | preprocessor->mLoadMeshes = false;
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33 | GtpVisibilityPreprocessor::ObjectContainer pvsObjects;
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34 |
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35 | Ogre::LogManager::getSingleton().logMessage("loading obj scene!!");
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36 |
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37 | if (preprocessor->LoadScene(sceneName))
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38 | {
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39 | Ogre::LogManager::getSingleton().logMessage("scene loaded, loading objects");
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40 | // form objects from the scene triangles
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41 | if (!preprocessor->LoadObjects(visibilitySolution, pvsObjects, preprocessor->mObjects))
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42 | {
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43 | Ogre::LogManager::getSingleton().logMessage("objects cannot be loaded");
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44 | return false;
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45 | }
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46 | }
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47 | else
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48 | {
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49 | Ogre::LogManager::getSingleton().logMessage("scene cannot be loaded");
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50 | return false;
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51 | }
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52 |
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53 | std::stringstream d;
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54 | d << "successfully loaded " << pvsObjects.size() << " objects from " << preprocessor->mObjects.size() << " preprocessor objects";
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55 |
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56 | Ogre::LogManager::getSingleton().logMessage(d.str());
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57 |
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58 | GtpVisibilityPreprocessor::ObjectContainer::const_iterator oit, oit_end = pvsObjects.end();
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59 |
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60 | int i = 0;
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61 | for (oit = pvsObjects.begin(); oit != oit_end; ++ oit, ++ i)
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62 | {
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63 | Ogre::LogManager::getSingleton().logMessage("r");
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64 | const Ogre::String entname = "Object" + Ogre::StringConverter::toString(i);
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65 |
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66 | Ogre::ManualObject *ent = CreateEntity(entname, *oit);
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67 |
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68 | const Ogre::String nodeName = entname + "Node";
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69 | Ogre::SceneNode* node = root->createChildSceneNode(nodeName);
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70 | node->attachObject(ent);
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71 |
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72 | if (i > 100)
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73 | break;
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74 | }
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75 |
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76 | delete preprocessor;
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77 |
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78 | return true;
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79 | }
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80 |
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81 |
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82 | Ogre::ManualObject *ObjReader::CreateManualObject(const std::string &name,
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83 | GtpVisibilityPreprocessor::Intersectable *object)
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84 | {
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85 | using namespace Ogre;
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86 | //using namespace GtpVisibilityPreprocessor;
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87 |
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88 | std::string meshName = name + ".mesh";
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89 | std::string entityName = name + "Entity";
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90 | |
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91 | GtpVisibilityPreprocessor::BvhLeaf *bvhObj =
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92 | static_cast<GtpVisibilityPreprocessor::BvhLeaf *>(object); |
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93 | const int vertexCount = (int)bvhObj->mObjects.size() * 3; |
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94 | |
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95 | ManualObject* manual = mSceneManager->createManualObject(entityName);
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96 | manual->begin("BaseWhiteNoLighting", RenderOperation::OT_LINE_STRIP);
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97 |
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98 | // create vertices
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99 |
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100 | GtpVisibilityPreprocessor::ObjectContainer::const_iterator oit, oit_end = bvhObj->mObjects.end();
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101 |
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102 | for (oit = bvhObj->mObjects.begin(); oit != oit_end; ++ oit)
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103 | {
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104 | GtpVisibilityPreprocessor::TriangleIntersectable *tObj =
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105 | static_cast<GtpVisibilityPreprocessor::TriangleIntersectable *>(*oit);
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106 |
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107 | GtpVisibilityPreprocessor::Triangle3 tri = tObj->GetItem();
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108 |
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109 | for (int i = 0; i < 3; ++ i)
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110 | {
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111 | const GtpVisibilityPreprocessor::Vector3 vtx = tri.mVertices[i];
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112 | manual->position(vtx.x, vtx.y, vtx.z);
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113 | manual->colour(1.0f, 0.0f, 0.0f);
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114 | }
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115 | }
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116 |
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117 | for (int i = 0; i < vertexCount; ++ i)
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118 | {
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119 | manual->index(i); |
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120 | } |
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121 | |
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122 | return manual; |
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123 | }
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124 |
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125 |
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126 | Ogre::Entity *ObjReader::CreateEntity(const std::string &name,
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127 | GtpVisibilityPreprocessor::Intersectable *object)
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128 | {
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129 | using namespace Ogre;
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130 |
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131 | Entity *entity;
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132 |
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133 | GtpVisibilityPreprocessor::BvhLeaf *bvhObj =
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134 | static_cast<GtpVisibilityPreprocessor::BvhLeaf *>(object);
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135 |
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136 | std::string meshName = name + ".mesh";
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137 | std::string entityName = name + "Entity";
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138 |
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139 | MeshPtr mesh = MeshManager::getSingleton().createManual(meshName, "Custom");
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140 | SubMesh* submesh = mesh->createSubMesh();
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141 |
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142 | const int vertexCount = (int)bvhObj->mObjects.size() * 3;
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143 |
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144 | // We must create the vertex data, indicating how many vertices there will be
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145 | submesh->useSharedVertices = false;
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146 | submesh->vertexData = new VertexData();
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147 | submesh->vertexData->vertexStart = 0;
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148 | submesh->vertexData->vertexCount = vertexCount;
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149 |
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150 | std::stringstream d; d << "objects: " << bvhObj->mObjects.size() << " vtx: " << submesh->vertexData->vertexCount << endl;
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151 | Ogre::LogManager::getSingleton().logMessage(d.str());
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152 |
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153 | static const unsigned short source = 0;
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154 | size_t offset = 0;
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155 |
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156 | VertexDeclaration* declaration = HardwareBufferManager::getSingleton().createVertexDeclaration();
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157 |
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158 | offset += declaration->addElement(source, offset, VET_FLOAT3, VES_POSITION).getSize();
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159 | //offset += declaration->addElement(source, offset, VET_FLOAT3,VES_NORMAL).getSize();
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160 | //offset += declaration->addElement(source, offset, VET_FLOAT2,VES_TEXTURE_COORDINATES).getSize();
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161 |
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162 |
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163 | int numVertices = 0;
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164 |
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165 | HardwareVertexBufferSharedPtr vbuffer = HardwareBufferManager::getSingleton().
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166 | createVertexBuffer(declaration->getVertexSize(source),
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167 | submesh->vertexData->vertexCount,
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168 | HardwareBuffer::HBU_STATIC_WRITE_ONLY);
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169 |
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170 | // No we get access to the buffer to fill it. During so we record the bounding box.
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171 | AxisAlignedBox aabox;
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172 |
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173 | float* vdata = static_cast<float*>(vbuffer->lock(HardwareBuffer::HBL_DISCARD));
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174 |
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175 | GtpVisibilityPreprocessor::ObjectContainer::const_iterator oit, oit_end = bvhObj->mObjects.end();
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176 |
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177 | for (oit = bvhObj->mObjects.begin(); oit != oit_end; ++ oit)
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178 | {
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179 | GtpVisibilityPreprocessor::TriangleIntersectable *tObj =
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180 | static_cast<GtpVisibilityPreprocessor::TriangleIntersectable *>(*oit);
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181 |
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182 | GtpVisibilityPreprocessor::Triangle3 tri = tObj->GetItem();
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183 |
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184 | for (int i = 0; i < 3; ++ i)
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185 | {
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186 | Vector3 vtx = Vector3(tri.mVertices[i]);
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187 |
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188 | *vdata ++ = vtx.x;
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189 | *vdata ++ = vtx.y;
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190 | *vdata ++ = vtx.z;
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191 |
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192 | //std::stringstream d; d << vtx;
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193 | //Ogre::LogManager::getSingleton().logMessage(d.str());
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194 | aabox.merge(vtx);
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195 | }
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196 | }
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197 | //Ogre::LogManager::getSingleton().logMessage("***");
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198 | vbuffer->unlock();
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199 |
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200 | /*Ogre::RenderOperation rop;
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201 | submesh->_getRenderOperation(rop);
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202 | rop.useIndexes = false;
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203 | */
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204 | //////
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205 | //-- Creates the index data
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206 |
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207 | submesh->vertexData->vertexBufferBinding->setBinding(source, vbuffer);
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208 |
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209 | submesh->indexData->indexStart = 0;
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210 | // we use an index for every vertex
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211 | submesh->indexData->indexCount = vertexCount;
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212 | submesh->indexData->indexBuffer =
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213 | HardwareBufferManager::getSingleton().
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214 | createIndexBuffer(HardwareIndexBuffer::IT_16BIT,
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215 | submesh->indexData->indexCount,
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216 | HardwareBuffer::HBU_STATIC_WRITE_ONLY);
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217 | submesh->operationType = RenderOperation::OT_LINE_STRIP;
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218 | //uint16* idata = static_cast<uint16*>(submesh->indexData->indexBuffer->lock(HardwareBuffer::HBL_DISCARD));
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219 | unsigned short* idata = static_cast<unsigned short*>(submesh->indexData->indexBuffer->lock(HardwareBuffer::HBL_DISCARD));
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220 |
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221 | for (int j = 0; j < vertexCount; ++ j)
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222 | {
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223 | *idata = j;
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224 | ++ idata;
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225 | }
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226 |
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227 | submesh->indexData->indexBuffer->unlock();
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228 |
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229 | submesh->setMaterialName("BaseWhiteNoLighting");
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230 |
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231 | // We must indicate the bounding box
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232 | mesh->_setBounds(aabox);
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233 | mesh->_setBoundingSphereRadius((aabox.getMaximum() - aabox.getMinimum()).length() / 2.0);
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234 | mesh->load();
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235 | mesh->touch();
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236 |
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237 | // Create an entity with the mesh
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238 | entity = mSceneManager->createEntity(entityName, meshName);
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239 |
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240 | //entity->setRenderQueueGroup(Ogre::RENDER_QUEUE_MAIN);
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241 |
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242 | return entity;
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243 | #endif
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244 | } |
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