1 | /* |
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2 | ----------------------------------------------------------------------------- |
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3 | This source file is part of OGRE |
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4 | (Object-oriented Graphics Rendering Engine) |
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5 | For the latest info, see http://www.ogre3d.org/ |
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6 | |
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7 | Copyright (c) 2000-2006 Torus Knot Software Ltd |
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8 | Also see acknowledgements in Readme.html |
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9 | |
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10 | This program is free software; you can redistribute it and/or modify it under |
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11 | the terms of the GNU Lesser General Public License as published by the Free Software |
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12 | Foundation; either version 2 of the License, or (at your option) any later |
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13 | version. |
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14 | |
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15 | This program is distributed in the hope that it will be useful, but WITHOUT |
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16 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS |
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17 | FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. |
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18 | |
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19 | You should have received a copy of the GNU Lesser General Public License along with |
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20 | this program; if not, write to the Free Software Foundation, Inc., 59 Temple |
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21 | Place - Suite 330, Boston, MA 02111-1307, USA, or go to |
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22 | http://www.gnu.org/copyleft/lesser.txt. |
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23 | |
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24 | You may alternatively use this source under the terms of a specific version of |
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25 | the OGRE Unrestricted License provided you have obtained such a license from |
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26 | Torus Knot Software Ltd. |
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27 | ----------------------------------------------------------------------------- |
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28 | */ |
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29 | |
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30 | #include "OgreStableHeaders.h" |
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31 | #include "OgrePrefabFactory.h" |
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32 | #include "OgreHardwareBufferManager.h" |
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33 | #include "OgreMesh.h" |
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34 | #include "OgreSubMesh.h" |
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35 | |
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36 | namespace Ogre { |
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37 | //--------------------------------------------------------------------- |
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38 | bool PrefabFactory::createPrefab(Mesh* mesh) |
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39 | { |
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40 | const String& resourceName = mesh->getName(); |
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41 | |
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42 | if(resourceName == "Prefab_Plane") |
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43 | { |
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44 | createPlane(mesh); |
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45 | return true; |
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46 | } |
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47 | else if(resourceName == "Prefab_Cube") |
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48 | { |
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49 | createCube(mesh); |
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50 | return true; |
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51 | } |
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52 | else if(resourceName == "Prefab_Sphere") |
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53 | { |
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54 | createSphere(mesh); |
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55 | return true; |
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56 | } |
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57 | |
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58 | return false; |
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59 | } |
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60 | //--------------------------------------------------------------------- |
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61 | void PrefabFactory::createPlane(Mesh* mesh) |
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62 | { |
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63 | SubMesh* sub = mesh->createSubMesh(); |
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64 | float vertices[32] = { |
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65 | -100, -100, 0, // pos |
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66 | 0,0,1, // normal |
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67 | 0,1, // texcoord |
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68 | 100, -100, 0, |
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69 | 0,0,1, |
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70 | 1,1, |
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71 | 100, 100, 0, |
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72 | 0,0,1, |
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73 | 1,0, |
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74 | -100, 100, 0 , |
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75 | 0,0,1, |
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76 | 0,0 |
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77 | }; |
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78 | mesh->sharedVertexData = new VertexData(); |
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79 | mesh->sharedVertexData->vertexCount = 4; |
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80 | VertexDeclaration* decl = mesh->sharedVertexData->vertexDeclaration; |
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81 | VertexBufferBinding* bind = mesh->sharedVertexData->vertexBufferBinding; |
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82 | |
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83 | size_t offset = 0; |
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84 | decl->addElement(0, offset, VET_FLOAT3, VES_POSITION); |
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85 | offset += VertexElement::getTypeSize(VET_FLOAT3); |
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86 | decl->addElement(0, offset, VET_FLOAT3, VES_NORMAL); |
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87 | offset += VertexElement::getTypeSize(VET_FLOAT3); |
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88 | decl->addElement(0, offset, VET_FLOAT2, VES_TEXTURE_COORDINATES, 0); |
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89 | offset += VertexElement::getTypeSize(VET_FLOAT2); |
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90 | |
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91 | HardwareVertexBufferSharedPtr vbuf = |
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92 | HardwareBufferManager::getSingleton().createVertexBuffer( |
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93 | offset, 4, HardwareBuffer::HBU_STATIC_WRITE_ONLY); |
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94 | bind->setBinding(0, vbuf); |
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95 | |
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96 | vbuf->writeData(0, vbuf->getSizeInBytes(), vertices, true); |
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97 | |
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98 | sub->useSharedVertices = true; |
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99 | HardwareIndexBufferSharedPtr ibuf = HardwareBufferManager::getSingleton(). |
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100 | createIndexBuffer( |
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101 | HardwareIndexBuffer::IT_16BIT, |
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102 | 6, |
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103 | HardwareBuffer::HBU_STATIC_WRITE_ONLY); |
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104 | |
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105 | unsigned short faces[6] = {0,1,2, |
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106 | 0,2,3 }; |
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107 | sub->indexData->indexBuffer = ibuf; |
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108 | sub->indexData->indexCount = 6; |
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109 | sub->indexData->indexStart =0; |
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110 | ibuf->writeData(0, ibuf->getSizeInBytes(), faces, true); |
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111 | |
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112 | mesh->_setBounds(AxisAlignedBox(-100,-100,0,100,100,0), true); |
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113 | mesh->_setBoundingSphereRadius(Math::Sqrt(100*100+100*100)); |
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114 | } |
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115 | //--------------------------------------------------------------------- |
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116 | void PrefabFactory::createCube(Mesh* mesh) |
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117 | { |
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118 | SubMesh* sub = mesh->createSubMesh(); |
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119 | |
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120 | const int NUM_VERTICES = 4 * 6; // 4 vertices per side * 6 sides |
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121 | const int NUM_ENTRIES_PER_VERTEX = 8; |
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122 | const int NUM_VERTEX_ENTRIES = NUM_VERTICES * NUM_ENTRIES_PER_VERTEX; |
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123 | const int NUM_INDICES = 3 * 2 * 6; // 3 indices per face * 2 faces per side * 6 sides |
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124 | |
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125 | const Real CUBE_SIZE = 100.0; |
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126 | const Real CUBE_HALF_SIZE = CUBE_SIZE / 2.0; |
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127 | |
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128 | // Create 4 vertices per side instead of 6 that are shared for the whole cube. |
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129 | // The reason for this is with only 6 vertices the normals will look bad |
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130 | // since each vertex can "point" in a different direction depending on the face it is included in. |
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131 | float vertices[NUM_VERTEX_ENTRIES] = { |
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132 | // front side |
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133 | -CUBE_HALF_SIZE, -CUBE_HALF_SIZE, CUBE_HALF_SIZE, // pos |
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134 | 0,0,1, // normal |
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135 | 0,1, // texcoord |
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136 | CUBE_HALF_SIZE, -CUBE_HALF_SIZE, CUBE_HALF_SIZE, |
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137 | 0,0,1, |
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138 | 1,1, |
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139 | CUBE_HALF_SIZE, CUBE_HALF_SIZE, CUBE_HALF_SIZE, |
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140 | 0,0,1, |
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141 | 1,0, |
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142 | -CUBE_HALF_SIZE, CUBE_HALF_SIZE, CUBE_HALF_SIZE , |
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143 | 0,0,1, |
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144 | 0,0, |
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145 | |
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146 | // back side |
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147 | CUBE_HALF_SIZE, -CUBE_HALF_SIZE, -CUBE_HALF_SIZE, |
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148 | 0,0,-1, |
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149 | 0,1, |
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150 | -CUBE_HALF_SIZE, -CUBE_HALF_SIZE, -CUBE_HALF_SIZE, |
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151 | 0,0,-1, |
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152 | 1,1, |
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153 | -CUBE_HALF_SIZE, CUBE_HALF_SIZE, -CUBE_HALF_SIZE, |
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154 | 0,0,-1, |
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155 | 1,0, |
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156 | CUBE_HALF_SIZE, CUBE_HALF_SIZE, -CUBE_HALF_SIZE, |
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157 | 0,0,-1, |
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158 | 0,0, |
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159 | |
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160 | // left side |
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161 | -CUBE_HALF_SIZE, -CUBE_HALF_SIZE, -CUBE_HALF_SIZE, |
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162 | -1,0,0, |
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163 | 0,1, |
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164 | -CUBE_HALF_SIZE, -CUBE_HALF_SIZE, CUBE_HALF_SIZE, |
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165 | -1,0,0, |
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166 | 1,1, |
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167 | -CUBE_HALF_SIZE, CUBE_HALF_SIZE, CUBE_HALF_SIZE, |
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168 | -1,0,0, |
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169 | 1,0, |
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170 | -CUBE_HALF_SIZE, CUBE_HALF_SIZE, -CUBE_HALF_SIZE, |
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171 | -1,0,0, |
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172 | 0,0, |
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173 | |
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174 | // right side |
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175 | CUBE_HALF_SIZE, -CUBE_HALF_SIZE, CUBE_HALF_SIZE, |
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176 | 1,0,0, |
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177 | 0,1, |
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178 | CUBE_HALF_SIZE, -CUBE_HALF_SIZE, -CUBE_HALF_SIZE, |
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179 | 1,0,0, |
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180 | 1,1, |
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181 | CUBE_HALF_SIZE, CUBE_HALF_SIZE, -CUBE_HALF_SIZE, |
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182 | 1,0,0, |
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183 | 1,0, |
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184 | CUBE_HALF_SIZE, CUBE_HALF_SIZE, CUBE_HALF_SIZE, |
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185 | 1,0,0, |
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186 | 0,0, |
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187 | |
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188 | // up side |
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189 | -CUBE_HALF_SIZE, CUBE_HALF_SIZE, CUBE_HALF_SIZE, |
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190 | 0,1,0, |
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191 | 0,1, |
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192 | CUBE_HALF_SIZE, CUBE_HALF_SIZE, CUBE_HALF_SIZE, |
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193 | 0,1,0, |
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194 | 1,1, |
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195 | CUBE_HALF_SIZE, CUBE_HALF_SIZE, -CUBE_HALF_SIZE, |
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196 | 0,1,0, |
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197 | 1,0, |
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198 | -CUBE_HALF_SIZE, CUBE_HALF_SIZE, -CUBE_HALF_SIZE, |
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199 | 0,1,0, |
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200 | 0,0, |
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201 | |
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202 | // down side |
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203 | -CUBE_HALF_SIZE, -CUBE_HALF_SIZE, -CUBE_HALF_SIZE, |
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204 | 0,-1,0, |
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205 | 0,1, |
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206 | CUBE_HALF_SIZE, -CUBE_HALF_SIZE, -CUBE_HALF_SIZE, |
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207 | 0,-1,0, |
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208 | 1,1, |
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209 | CUBE_HALF_SIZE, -CUBE_HALF_SIZE, CUBE_HALF_SIZE, |
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210 | 0,-1,0, |
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211 | 1,0, |
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212 | -CUBE_HALF_SIZE, -CUBE_HALF_SIZE, CUBE_HALF_SIZE, |
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213 | 0,-1,0, |
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214 | 0,0 |
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215 | }; |
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216 | |
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217 | mesh->sharedVertexData = new VertexData(); |
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218 | mesh->sharedVertexData->vertexCount = NUM_VERTICES; |
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219 | VertexDeclaration* decl = mesh->sharedVertexData->vertexDeclaration; |
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220 | VertexBufferBinding* bind = mesh->sharedVertexData->vertexBufferBinding; |
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221 | |
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222 | size_t offset = 0; |
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223 | decl->addElement(0, offset, VET_FLOAT3, VES_POSITION); |
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224 | offset += VertexElement::getTypeSize(VET_FLOAT3); |
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225 | decl->addElement(0, offset, VET_FLOAT3, VES_NORMAL); |
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226 | offset += VertexElement::getTypeSize(VET_FLOAT3); |
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227 | decl->addElement(0, offset, VET_FLOAT2, VES_TEXTURE_COORDINATES, 0); |
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228 | offset += VertexElement::getTypeSize(VET_FLOAT2); |
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229 | |
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230 | HardwareVertexBufferSharedPtr vbuf = |
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231 | HardwareBufferManager::getSingleton().createVertexBuffer( |
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232 | offset, NUM_VERTICES, HardwareBuffer::HBU_STATIC_WRITE_ONLY); |
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233 | bind->setBinding(0, vbuf); |
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234 | |
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235 | vbuf->writeData(0, vbuf->getSizeInBytes(), vertices, true); |
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236 | |
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237 | sub->useSharedVertices = true; |
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238 | HardwareIndexBufferSharedPtr ibuf = HardwareBufferManager::getSingleton(). |
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239 | createIndexBuffer( |
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240 | HardwareIndexBuffer::IT_16BIT, |
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241 | NUM_INDICES, |
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242 | HardwareBuffer::HBU_STATIC_WRITE_ONLY); |
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243 | |
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244 | unsigned short faces[NUM_INDICES] = { |
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245 | // front |
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246 | 0,1,2, |
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247 | 0,2,3, |
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248 | |
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249 | // back |
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250 | 4,5,6, |
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251 | 4,6,7, |
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252 | |
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253 | // left |
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254 | 8,9,10, |
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255 | 8,10,11, |
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256 | |
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257 | // right |
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258 | 12,13,14, |
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259 | 12,14,15, |
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260 | |
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261 | // up |
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262 | 16,17,18, |
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263 | 16,18,19, |
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264 | |
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265 | // down |
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266 | 20,21,22, |
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267 | 20,22,23 |
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268 | }; |
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269 | |
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270 | sub->indexData->indexBuffer = ibuf; |
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271 | sub->indexData->indexCount = NUM_INDICES; |
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272 | sub->indexData->indexStart = 0; |
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273 | ibuf->writeData(0, ibuf->getSizeInBytes(), faces, true); |
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274 | |
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275 | mesh->_setBounds(AxisAlignedBox(-CUBE_HALF_SIZE, -CUBE_HALF_SIZE, -CUBE_HALF_SIZE, |
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276 | CUBE_HALF_SIZE, CUBE_HALF_SIZE, CUBE_HALF_SIZE), true); |
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277 | |
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278 | mesh->_setBoundingSphereRadius(CUBE_HALF_SIZE); |
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279 | } |
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280 | //--------------------------------------------------------------------- |
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281 | void PrefabFactory::createSphere(Mesh* mesh) |
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282 | { |
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283 | // sphere creation code taken from the DeferredShading sample, originally from the wiki |
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284 | SubMesh *pSphereVertex = mesh->createSubMesh(); |
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285 | |
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286 | const int NUM_SEGMENTS = 16; |
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287 | const int NUM_RINGS = 16; |
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288 | const Real SPHERE_RADIUS = 50.0; |
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289 | |
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290 | mesh->sharedVertexData = new VertexData(); |
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291 | VertexData* vertexData = mesh->sharedVertexData; |
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292 | |
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293 | // define the vertex format |
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294 | VertexDeclaration* vertexDecl = vertexData->vertexDeclaration; |
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295 | size_t currOffset = 0; |
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296 | // positions |
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297 | vertexDecl->addElement(0, currOffset, VET_FLOAT3, VES_POSITION); |
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298 | currOffset += VertexElement::getTypeSize(VET_FLOAT3); |
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299 | // normals |
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300 | vertexDecl->addElement(0, currOffset, VET_FLOAT3, VES_NORMAL); |
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301 | currOffset += VertexElement::getTypeSize(VET_FLOAT3); |
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302 | // two dimensional texture coordinates |
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303 | vertexDecl->addElement(0, currOffset, VET_FLOAT2, VES_TEXTURE_COORDINATES, 0); |
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304 | currOffset += VertexElement::getTypeSize(VET_FLOAT2); |
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305 | |
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306 | // allocate the vertex buffer |
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307 | vertexData->vertexCount = (NUM_RINGS + 1) * (NUM_SEGMENTS+1); |
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308 | HardwareVertexBufferSharedPtr vBuf = HardwareBufferManager::getSingleton().createVertexBuffer(vertexDecl->getVertexSize(0), vertexData->vertexCount, HardwareBuffer::HBU_STATIC_WRITE_ONLY, false); |
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309 | VertexBufferBinding* binding = vertexData->vertexBufferBinding; |
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310 | binding->setBinding(0, vBuf); |
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311 | float* pVertex = static_cast<float*>(vBuf->lock(HardwareBuffer::HBL_DISCARD)); |
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312 | |
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313 | // allocate index buffer |
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314 | pSphereVertex->indexData->indexCount = 6 * NUM_RINGS * (NUM_SEGMENTS + 1); |
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315 | pSphereVertex->indexData->indexBuffer = HardwareBufferManager::getSingleton().createIndexBuffer(HardwareIndexBuffer::IT_16BIT, pSphereVertex->indexData->indexCount, HardwareBuffer::HBU_STATIC_WRITE_ONLY, false); |
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316 | HardwareIndexBufferSharedPtr iBuf = pSphereVertex->indexData->indexBuffer; |
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317 | unsigned short* pIndices = static_cast<unsigned short*>(iBuf->lock(HardwareBuffer::HBL_DISCARD)); |
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318 | |
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319 | float fDeltaRingAngle = (Math::PI / NUM_RINGS); |
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320 | float fDeltaSegAngle = (2 * Math::PI / NUM_SEGMENTS); |
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321 | unsigned short wVerticeIndex = 0 ; |
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322 | |
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323 | // Generate the group of rings for the sphere |
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324 | for( int ring = 0; ring <= NUM_RINGS; ring++ ) { |
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325 | float r0 = SPHERE_RADIUS * sinf (ring * fDeltaRingAngle); |
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326 | float y0 = SPHERE_RADIUS * cosf (ring * fDeltaRingAngle); |
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327 | |
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328 | // Generate the group of segments for the current ring |
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329 | for(int seg = 0; seg <= NUM_SEGMENTS; seg++) { |
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330 | float x0 = r0 * sinf(seg * fDeltaSegAngle); |
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331 | float z0 = r0 * cosf(seg * fDeltaSegAngle); |
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332 | |
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333 | // Add one vertex to the strip which makes up the sphere |
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334 | *pVertex++ = x0; |
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335 | *pVertex++ = y0; |
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336 | *pVertex++ = z0; |
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337 | |
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338 | Vector3 vNormal = Vector3(x0, y0, z0).normalisedCopy(); |
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339 | *pVertex++ = vNormal.x; |
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340 | *pVertex++ = vNormal.y; |
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341 | *pVertex++ = vNormal.z; |
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342 | |
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343 | *pVertex++ = (float) seg / (float) NUM_SEGMENTS; |
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344 | *pVertex++ = (float) ring / (float) NUM_RINGS; |
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345 | |
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346 | if (ring != NUM_RINGS) { |
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347 | // each vertex (except the last) has six indicies pointing to it |
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348 | *pIndices++ = wVerticeIndex + NUM_SEGMENTS + 1; |
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349 | *pIndices++ = wVerticeIndex; |
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350 | *pIndices++ = wVerticeIndex + NUM_SEGMENTS; |
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351 | *pIndices++ = wVerticeIndex + NUM_SEGMENTS + 1; |
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352 | *pIndices++ = wVerticeIndex + 1; |
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353 | *pIndices++ = wVerticeIndex; |
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354 | wVerticeIndex ++; |
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355 | } |
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356 | }; // end for seg |
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357 | } // end for ring |
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358 | |
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359 | // Unlock |
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360 | vBuf->unlock(); |
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361 | iBuf->unlock(); |
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362 | // Generate face list |
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363 | pSphereVertex->useSharedVertices = true; |
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364 | |
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365 | // the original code was missing this line: |
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366 | mesh->_setBounds( AxisAlignedBox( Vector3(-SPHERE_RADIUS, -SPHERE_RADIUS, -SPHERE_RADIUS), |
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367 | Vector3(SPHERE_RADIUS, SPHERE_RADIUS, SPHERE_RADIUS) ), false ); |
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368 | |
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369 | mesh->_setBoundingSphereRadius(SPHERE_RADIUS); |
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370 | } |
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371 | //--------------------------------------------------------------------- |
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372 | } |
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