1 | //////////////////////////////////////////////////////////////////////////////// |
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2 | // submesh.cpp |
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3 | // Author : Francesco Giordana |
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4 | // Start Date : January 13, 2005 |
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5 | // Copyright : (C) 2006 by Francesco Giordana |
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6 | // Email : fra.giordana@tiscali.it |
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7 | //////////////////////////////////////////////////////////////////////////////// |
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8 | |
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9 | /********************************************************************************* |
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10 | * * |
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11 | * This program is free software; you can redistribute it and/or modify * |
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12 | * it under the terms of the GNU Lesser General Public License as published by * |
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13 | * the Free Software Foundation; either version 2 of the License, or * |
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14 | * (at your option) any later version. * |
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15 | * * |
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16 | **********************************************************************************/ |
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17 | |
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18 | #include "submesh.h" |
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19 | |
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20 | namespace OgreMayaExporter |
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21 | { |
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22 | /***** Class Submesh *****/ |
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23 | // constructor |
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24 | Submesh::Submesh(const MString& name) |
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25 | { |
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26 | m_pBlendShape = NULL; |
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27 | clear(); |
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28 | m_name = name; |
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29 | } |
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30 | |
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31 | // destructor |
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32 | Submesh::~Submesh() |
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33 | { |
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34 | clear(); |
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35 | } |
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36 | |
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37 | // clear data |
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38 | void Submesh::clear() |
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39 | { |
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40 | m_name = ""; |
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41 | m_numTriangles = 0; |
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42 | m_pMaterial = NULL; |
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43 | m_vertices.clear(); |
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44 | m_faces.clear(); |
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45 | m_uvsets.clear(); |
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46 | m_use32bitIndexes = false; |
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47 | if (m_pBlendShape) |
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48 | delete m_pBlendShape; |
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49 | m_pBlendShape = NULL; |
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50 | } |
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51 | |
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52 | // return number of triangles composing the mesh |
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53 | long Submesh::numTriangles() |
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54 | { |
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55 | return m_numTriangles; |
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56 | } |
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57 | |
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58 | // return number of vertices composing the mesh |
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59 | long Submesh::numVertices() |
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60 | { |
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61 | return m_numVertices; |
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62 | } |
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63 | |
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64 | // return submesh name |
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65 | MString& Submesh::name() |
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66 | { |
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67 | return m_name; |
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68 | } |
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69 | |
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70 | /***** load data *****/ |
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71 | MStatus Submesh::loadMaterial(MObject& shader,MStringArray& uvsets,ParamList& params) |
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72 | { |
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73 | int i; |
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74 | MPlug plug; |
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75 | MPlugArray srcplugarray; |
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76 | bool foundShader = false; |
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77 | MStatus stat; |
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78 | MFnDependencyNode* pShader; |
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79 | //get shader from shading group |
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80 | MFnDependencyNode shadingGroup(shader); |
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81 | plug = shadingGroup.findPlug("surfaceShader"); |
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82 | plug.connectedTo(srcplugarray,true,false,&stat); |
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83 | for (i=0; i<srcplugarray.length() && !foundShader; i++) |
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84 | { |
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85 | if (srcplugarray[i].node().hasFn(MFn::kLambert) || srcplugarray[i].node().hasFn(MFn::kSurfaceShader) || |
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86 | srcplugarray[i].node().hasFn(MFn::kPluginHwShaderNode) ) |
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87 | { |
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88 | pShader = new MFnDependencyNode(srcplugarray[i].node()); |
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89 | foundShader = true; |
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90 | } |
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91 | } |
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92 | if (foundShader) |
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93 | { |
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94 | std::cout << "Found material: " << pShader->name().asChar() << "\n"; |
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95 | std::cout.flush(); |
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96 | //check if this material has already been created |
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97 | //fix material name, adding the requested prefix |
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98 | MString tmpStr = params.matPrefix; |
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99 | if (tmpStr != "") |
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100 | tmpStr += "/"; |
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101 | tmpStr += pShader->name(); |
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102 | MStringArray tmpStrArray; |
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103 | tmpStr.split(':',tmpStrArray); |
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104 | MString name = ""; |
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105 | for (i=0; i<tmpStrArray.length(); i++) |
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106 | { |
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107 | name += tmpStrArray[i]; |
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108 | if (i < tmpStrArray.length()-1) |
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109 | name += "_"; |
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110 | } |
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111 | Material* pMaterial = MaterialSet::getSingleton().getMaterial(name); |
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112 | //if the material has already been created, update the pointer |
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113 | if (pMaterial) |
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114 | m_pMaterial = pMaterial; |
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115 | //else create it and add it to the material set |
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116 | else |
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117 | { |
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118 | pMaterial = new Material(); |
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119 | pMaterial->load(pShader,uvsets,params); |
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120 | m_pMaterial = pMaterial; |
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121 | MaterialSet::getSingleton().addMaterial(pMaterial); |
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122 | } |
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123 | //delete temporary shader |
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124 | delete pShader; |
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125 | } |
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126 | else |
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127 | { |
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128 | std::cout << "Unsupported material, replacing with default lambert\n"; |
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129 | std::cout.flush(); |
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130 | m_pMaterial = MaterialSet::getSingleton().getDefaultMaterial(); |
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131 | } |
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132 | |
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133 | //loading complete |
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134 | return MS::kSuccess; |
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135 | } |
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136 | |
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137 | MStatus Submesh::load(const MDagPath& dag,std::vector<face>& faces, std::vector<vertexInfo>& vertInfo, MPointArray& points, |
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138 | MFloatVectorArray& normals, MStringArray& texcoordsets,ParamList& params,bool opposite) |
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139 | { |
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140 | //save the dag path of the maya node from which this submesh will be created |
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141 | m_dagPath = dag; |
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142 | //create the mesh Fn |
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143 | MFnMesh mesh(dag); |
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144 | int i,j,k; |
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145 | std::cout << "Loading submesh associated to material: " << m_pMaterial->name().asChar() << "..."; |
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146 | std::cout.flush(); |
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147 | //save uvsets info |
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148 | for (i=m_uvsets.size(); i<texcoordsets.length(); i++) |
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149 | { |
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150 | uvset uv; |
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151 | uv.size = 2; |
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152 | m_uvsets.push_back(uv); |
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153 | } |
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154 | //iterate over faces array, to retrieve vertices info |
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155 | for (i=0; i<faces.size(); i++) |
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156 | { |
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157 | face newFace; |
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158 | // if we are using shared geometry, indexes refer to the vertex buffer of the whole mesh |
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159 | if (params.useSharedGeom) |
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160 | { |
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161 | if(opposite) |
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162 | { // reverse order of face vertices for correct culling |
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163 | newFace.v[0] = faces[i].v[2]; |
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164 | newFace.v[1] = faces[i].v[1]; |
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165 | newFace.v[2] = faces[i].v[0]; |
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166 | } |
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167 | else |
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168 | { |
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169 | newFace.v[0] = faces[i].v[0]; |
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170 | newFace.v[1] = faces[i].v[1]; |
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171 | newFace.v[2] = faces[i].v[2]; |
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172 | } |
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173 | } |
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174 | // otherwise we create a vertex buffer for this submesh |
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175 | else |
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176 | { // faces are triangles, so retrieve index of the three vertices |
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177 | for (j=0; j<3; j++) |
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178 | { |
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179 | vertex v; |
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180 | vertexInfo vInfo = vertInfo[faces[i].v[j]]; |
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181 | // save vertex coordinates (rescale to desired length unit) |
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182 | MPoint point = points[vInfo.pointIdx] * params.lum; |
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183 | if (fabs(point.x) < PRECISION) |
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184 | point.x = 0; |
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185 | if (fabs(point.y) < PRECISION) |
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186 | point.y = 0; |
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187 | if (fabs(point.z) < PRECISION) |
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188 | point.z = 0; |
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189 | v.x = point.x; |
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190 | v.y = point.y; |
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191 | v.z = point.z; |
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192 | // save vertex normal |
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193 | MFloatVector normal = normals[vInfo.normalIdx]; |
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194 | if (fabs(normal.x) < PRECISION) |
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195 | normal.x = 0; |
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196 | if (fabs(normal.y) < PRECISION) |
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197 | normal.y = 0; |
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198 | if (fabs(normal.z) < PRECISION) |
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199 | normal.z = 0; |
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200 | if (opposite) |
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201 | { |
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202 | v.n.x = -normal.x; |
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203 | v.n.y = -normal.y; |
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204 | v.n.z = -normal.z; |
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205 | } |
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206 | else |
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207 | { |
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208 | v.n.x = normal.x; |
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209 | v.n.y = normal.y; |
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210 | v.n.z = normal.z; |
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211 | } |
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212 | v.n.normalize(); |
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213 | // save vertex color |
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214 | v.r = vInfo.r; |
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215 | v.g = vInfo.g; |
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216 | v.b = vInfo.b; |
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217 | v.a = vInfo.a; |
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218 | // save vertex bone assignements |
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219 | for (k=0; k<vInfo.vba.size(); k++) |
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220 | { |
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221 | vba newVba; |
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222 | newVba.jointIdx = vInfo.jointIds[k]; |
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223 | newVba.weight = vInfo.vba[k]; |
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224 | v.vbas.push_back(newVba); |
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225 | } |
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226 | // save texture coordinates |
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227 | for (k=0; k<vInfo.u.size(); k++) |
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228 | { |
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229 | texcoords newTexCoords; |
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230 | newTexCoords.u = vInfo.u[k]; |
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231 | newTexCoords.v = vInfo.v[k]; |
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232 | newTexCoords.w = 0; |
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233 | v.texcoords.push_back(newTexCoords); |
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234 | } |
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235 | // save vertex index in maya mesh, to retrieve future positions of the same vertex |
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236 | v.index = vInfo.pointIdx; |
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237 | // add newly created vertex to vertex list |
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238 | m_vertices.push_back(v); |
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239 | if (opposite) // reverse order of face vertices to get correct culling |
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240 | newFace.v[2-j] = m_vertices.size() - 1; |
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241 | else |
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242 | newFace.v[j] = m_vertices.size() - 1; |
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243 | } |
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244 | } |
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245 | m_faces.push_back(newFace); |
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246 | } |
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247 | // set use32bitIndexes flag |
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248 | if (params.useSharedGeom || (m_vertices.size() > 65535) || (m_faces.size() > 65535)) |
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249 | m_use32bitIndexes = true; |
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250 | else |
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251 | m_use32bitIndexes = false; |
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252 | // get submesh bounding box |
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253 | MPoint min = mesh.boundingBox().min(); |
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254 | MPoint max = mesh.boundingBox().max(); |
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255 | MBoundingBox bbox(min,max); |
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256 | if (params.exportWorldCoords) |
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257 | bbox.transformUsing(dag.inclusiveMatrix()); |
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258 | min = bbox.min() * params.lum; |
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259 | max = bbox.max() * params.lum; |
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260 | MBoundingBox newbbox(min,max); |
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261 | m_boundingBox = newbbox; |
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262 | // add submesh pointer to parameters list |
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263 | params.loadedSubmeshes.push_back(this); |
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264 | |
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265 | std::cout << "DONE\n"; |
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266 | std::cout.flush(); |
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267 | return MS::kSuccess; |
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268 | } |
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269 | |
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270 | |
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271 | // Load a keyframe for this submesh |
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272 | MStatus Submesh::loadKeyframe(Track& t,float time,ParamList& params) |
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273 | { |
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274 | int i; |
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275 | // create a new keyframe |
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276 | vertexKeyframe k; |
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277 | // set keyframe time |
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278 | k.time = time; |
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279 | // get the mesh Fn |
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280 | MFnMesh mesh(m_dagPath); |
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281 | // get vertex positions |
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282 | MFloatPointArray points; |
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283 | if (params.exportWorldCoords) |
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284 | mesh.getPoints(points,MSpace::kWorld); |
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285 | else |
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286 | mesh.getPoints(points,MSpace::kObject); |
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287 | // calculate vertex offsets |
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288 | for (i=0; i<m_vertices.size(); i++) |
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289 | { |
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290 | vertexPosition pos; |
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291 | vertex v = m_vertices[i]; |
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292 | pos.x = points[v.index].x * params.lum; |
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293 | pos.y = points[v.index].y * params.lum; |
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294 | pos.z = points[v.index].z * params.lum; |
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295 | if (fabs(pos.x) < PRECISION) |
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296 | pos.x = 0; |
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297 | if (fabs(pos.y) < PRECISION) |
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298 | pos.y = 0; |
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299 | if (fabs(pos.z) < PRECISION) |
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300 | pos.z = 0; |
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301 | k.positions.push_back(pos); |
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302 | } |
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303 | // add keyframe to given track |
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304 | t.addVertexKeyframe(k); |
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305 | if (params.vertBB) |
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306 | { |
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307 | // update bounding box |
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308 | MPoint min = mesh.boundingBox().min(); |
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309 | MPoint max = mesh.boundingBox().max(); |
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310 | MBoundingBox bbox(min,max); |
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311 | if (params.exportWorldCoords) |
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312 | bbox.transformUsing(m_dagPath.inclusiveMatrix()); |
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313 | min = bbox.min() * params.lum; |
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314 | max = bbox.max() * params.lum; |
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315 | MBoundingBox newbbox(min,max); |
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316 | m_boundingBox.expand(newbbox); |
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317 | } |
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318 | // keyframe successfully loaded |
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319 | return MS::kSuccess; |
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320 | } |
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321 | |
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322 | |
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323 | |
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324 | /***** Export data *****/ |
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325 | // Write submesh data to an Ogre compatible mesh |
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326 | MStatus Submesh::createOgreSubmesh(Ogre::MeshPtr pMesh,const ParamList& params) |
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327 | { |
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328 | int i,j; |
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329 | MStatus stat; |
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330 | // Create a new submesh |
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331 | Ogre::SubMesh* pSubmesh; |
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332 | if (m_name != "") |
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333 | pSubmesh = pMesh->createSubMesh(m_name.asChar()); |
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334 | else |
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335 | pSubmesh = pMesh->createSubMesh(); |
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336 | // Set material |
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337 | pSubmesh->setMaterialName(m_pMaterial->name().asChar()); |
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338 | // Set use shared geometry flag |
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339 | pSubmesh->useSharedVertices = params.useSharedGeom; |
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340 | // Create vertex data for current submesh |
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341 | pSubmesh->vertexData = new Ogre::VertexData(); |
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342 | // Set number of indexes |
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343 | pSubmesh->indexData->indexCount = 3*m_faces.size(); |
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344 | pSubmesh->vertexData->vertexCount = m_vertices.size(); |
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345 | // Check if we need to use 32 bit indexes |
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346 | bool use32BitIndexes = false; |
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347 | if (m_vertices.size() > 65536 || params.useSharedGeom) |
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348 | { |
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349 | use32BitIndexes = true; |
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350 | } |
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351 | // Create a new index buffer |
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352 | pSubmesh->indexData->indexBuffer = |
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353 | Ogre::HardwareBufferManager::getSingleton().createIndexBuffer( |
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354 | use32BitIndexes ? Ogre::HardwareIndexBuffer::IT_32BIT : Ogre::HardwareIndexBuffer::IT_16BIT, |
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355 | pSubmesh->indexData->indexCount, |
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356 | Ogre::HardwareBuffer::HBU_STATIC_WRITE_ONLY); |
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357 | // Fill the index buffer with faces data |
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358 | if (use32BitIndexes) |
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359 | { |
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360 | Ogre::uint32* pIdx = static_cast<Ogre::uint32*>( |
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361 | pSubmesh->indexData->indexBuffer->lock(Ogre::HardwareBuffer::HBL_DISCARD)); |
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362 | for (i=0; i<m_faces.size(); i++) |
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363 | { |
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364 | *pIdx++ = static_cast<Ogre::uint32>(m_faces[i].v[0]); |
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365 | *pIdx++ = static_cast<Ogre::uint32>(m_faces[i].v[1]); |
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366 | *pIdx++ = static_cast<Ogre::uint32>(m_faces[i].v[2]); |
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367 | } |
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368 | pSubmesh->indexData->indexBuffer->unlock(); |
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369 | } |
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370 | else |
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371 | { |
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372 | Ogre::uint16* pIdx = static_cast<Ogre::uint16*>( |
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373 | pSubmesh->indexData->indexBuffer->lock(Ogre::HardwareBuffer::HBL_DISCARD)); |
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374 | for (i=0; i<m_faces.size(); i++) |
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375 | { |
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376 | *pIdx++ = static_cast<Ogre::uint16>(m_faces[i].v[0]); |
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377 | *pIdx++ = static_cast<Ogre::uint16>(m_faces[i].v[1]); |
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378 | *pIdx++ = static_cast<Ogre::uint16>(m_faces[i].v[2]); |
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379 | } |
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380 | pSubmesh->indexData->indexBuffer->unlock(); |
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381 | } |
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382 | // Define vertex declaration (only if we're not using shared geometry) |
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383 | if(!params.useSharedGeom) |
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384 | { |
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385 | Ogre::VertexDeclaration* pDecl = pSubmesh->vertexData->vertexDeclaration; |
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386 | unsigned buf = 0; |
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387 | size_t offset = 0; |
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388 | // Add vertex position |
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389 | pDecl->addElement(buf, offset, Ogre::VET_FLOAT3, Ogre::VES_POSITION); |
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390 | offset += Ogre::VertexElement::getTypeSize(Ogre::VET_FLOAT3); |
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391 | // Add vertex normal |
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392 | if (params.exportVertNorm) |
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393 | { |
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394 | pDecl->addElement(buf, offset, Ogre::VET_FLOAT3, Ogre::VES_NORMAL); |
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395 | offset += Ogre::VertexElement::getTypeSize(Ogre::VET_FLOAT3); |
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396 | } |
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397 | // Add vertex colour |
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398 | if(params.exportVertCol) |
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399 | { |
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400 | pDecl->addElement(buf, offset, Ogre::VET_FLOAT4, Ogre::VES_DIFFUSE); |
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401 | offset += Ogre::VertexElement::getTypeSize(Ogre::VET_FLOAT4); |
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402 | } |
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403 | // Add texture coordinates |
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404 | for (i=0; i<m_vertices[0].texcoords.size(); i++) |
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405 | { |
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406 | Ogre::VertexElementType uvType = Ogre::VertexElement::multiplyTypeCount(Ogre::VET_FLOAT1, 2); |
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407 | pDecl->addElement(buf, offset, uvType, Ogre::VES_TEXTURE_COORDINATES, i); |
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408 | offset += Ogre::VertexElement::getTypeSize(uvType); |
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409 | } |
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410 | Ogre::VertexDeclaration* pOptimalDecl = pDecl->getAutoOrganisedDeclaration( |
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411 | params.exportVBA,params.exportBlendShapes || params.exportVertAnims); |
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412 | // Fill the vertex buffer using the newly created vertex declaration |
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413 | stat = createOgreVertexBuffer(pSubmesh,pDecl,m_vertices); |
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414 | // Write vertex bone assignements list |
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415 | if (params.exportVBA) |
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416 | { |
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417 | // Create a new vertex bone assignements list |
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418 | Ogre::SubMesh::VertexBoneAssignmentList vbas; |
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419 | // Scan list of shared geometry vertices |
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420 | for (i=0; i<m_vertices.size(); i++) |
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421 | { |
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422 | vertex v = m_vertices[i]; |
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423 | // Add all bone assignemnts for every vertex to the bone assignements list |
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424 | for (j=0; j<v.vbas.size(); j++) |
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425 | { |
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426 | Ogre::VertexBoneAssignment vba; |
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427 | vba.vertexIndex = i; |
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428 | vba.boneIndex = v.vbas[j].jointIdx; |
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429 | vba.weight = v.vbas[j].weight; |
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430 | vbas.insert(Ogre::SubMesh::VertexBoneAssignmentList::value_type(i, vba)); |
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431 | } |
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432 | } |
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433 | // Rationalise the bone assignements list |
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434 | pSubmesh->parent->_rationaliseBoneAssignments(pSubmesh->vertexData->vertexCount,vbas); |
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435 | // Add bone assignements to the submesh |
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436 | for (Ogre::SubMesh::VertexBoneAssignmentList::iterator bi = vbas.begin(); bi != vbas.end(); bi++) |
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437 | { |
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438 | pSubmesh->addBoneAssignment(bi->second); |
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439 | } |
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440 | pSubmesh->_compileBoneAssignments(); |
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441 | } |
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442 | pSubmesh->vertexData->reorganiseBuffers(pOptimalDecl); |
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443 | } |
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444 | return MS::kSuccess; |
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445 | } |
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446 | |
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447 | |
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448 | // Create an Ogre compatible vertex buffer |
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449 | MStatus Submesh::createOgreVertexBuffer(Ogre::SubMesh* pSubmesh,Ogre::VertexDeclaration* pDecl,const std::vector<vertex>& vertices) |
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450 | { |
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451 | Ogre::HardwareVertexBufferSharedPtr vbuf = |
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452 | Ogre::HardwareBufferManager::getSingleton().createVertexBuffer(pDecl->getVertexSize(0), |
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453 | pSubmesh->vertexData->vertexCount, |
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454 | Ogre::HardwareBuffer::HBU_STATIC_WRITE_ONLY); |
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455 | pSubmesh->vertexData->vertexBufferBinding->setBinding(0, vbuf); |
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456 | size_t vertexSize = pDecl->getVertexSize(0); |
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457 | char* pBase = static_cast<char*>(vbuf->lock(Ogre::HardwareBuffer::HBL_DISCARD)); |
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458 | Ogre::VertexDeclaration::VertexElementList elems = pDecl->findElementsBySource(0); |
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459 | Ogre::VertexDeclaration::VertexElementList::iterator ei, eiend; |
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460 | eiend = elems.end(); |
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461 | float* pFloat; |
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462 | // Fill the vertex buffer with shared geometry data |
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463 | long vi; |
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464 | Ogre::ColourValue col; |
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465 | float ucoord, vcoord; |
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466 | for (vi=0; vi<vertices.size(); vi++) |
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467 | { |
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468 | int iTexCoord = 0; |
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469 | vertex v = vertices[vi]; |
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470 | for (ei = elems.begin(); ei != eiend; ++ei) |
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471 | { |
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472 | Ogre::VertexElement& elem = *ei; |
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473 | switch(elem.getSemantic()) |
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474 | { |
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475 | case Ogre::VES_POSITION: |
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476 | elem.baseVertexPointerToElement(pBase, &pFloat); |
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477 | *pFloat++ = v.x; |
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478 | *pFloat++ = v.y; |
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479 | *pFloat++ = v.z; |
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480 | break; |
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481 | case Ogre::VES_NORMAL: |
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482 | elem.baseVertexPointerToElement(pBase, &pFloat); |
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483 | *pFloat++ = v.n.x; |
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484 | *pFloat++ = v.n.y; |
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485 | *pFloat++ = v.n.z; |
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486 | break; |
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487 | case Ogre::VES_DIFFUSE: |
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488 | elem.baseVertexPointerToElement(pBase, &pFloat); |
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489 | *pFloat++ = v.r; |
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490 | *pFloat++ = v.g; |
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491 | *pFloat++ = v.b; |
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492 | *pFloat++ = v.a; |
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493 | break; |
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494 | case Ogre::VES_TEXTURE_COORDINATES: |
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495 | elem.baseVertexPointerToElement(pBase, &pFloat); |
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496 | ucoord = v.texcoords[iTexCoord].u; |
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497 | vcoord = v.texcoords[iTexCoord].v; |
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498 | *pFloat++ = ucoord; |
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499 | *pFloat++ = vcoord; |
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500 | iTexCoord++; |
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501 | break; |
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502 | } |
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503 | } |
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504 | pBase += vertexSize; |
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505 | } |
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506 | vbuf->unlock(); |
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507 | return MS::kSuccess; |
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508 | } |
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509 | |
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510 | }; //end of namespace |
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