1 | #include "GeoMeshSimplifier.h" |
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2 | #include "GeoMeshSimpSequence.h" |
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3 | #include "SimplificationMethod.h" |
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4 | #include <iostream> |
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5 | #include <fstream> |
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6 | |
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7 | using namespace Geometry; |
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8 | using namespace std; |
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9 | |
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10 | ////////////////////////////////////////////////////////////////////////// |
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11 | // // |
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12 | // MeshSimplifier class // |
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13 | // // |
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14 | ////////////////////////////////////////////////////////////////////////// |
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15 | |
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16 | //------------------------------------------------------------------------- |
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17 | // MeshSimplifier constructor. |
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18 | //------------------------------------------------------------------------- |
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19 | MeshSimplifier::MeshSimplifier( const Mesh *m, |
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20 | TIPOFUNC upb) |
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21 | { |
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22 | // Saves initial state of mesh. |
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23 | mInitialMesh = new Mesh(); |
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24 | *mInitialMesh = *m; |
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25 | |
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26 | mGeoMesh = NULL; |
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27 | msimpsequence = NULL; |
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28 | indexMeshLeaves = -1; |
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29 | |
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30 | // Sets the actual progress bar function. |
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31 | mUPB = upb; |
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32 | } |
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33 | |
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34 | //------------------------------------------------------------------------- |
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35 | // MeshSimplifier destroyer. |
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36 | //------------------------------------------------------------------------- |
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37 | MeshSimplifier::~MeshSimplifier() |
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38 | { |
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39 | delete mInitialMesh; |
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40 | delete msimpsequence; |
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41 | } |
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42 | |
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43 | //------------------------------------------------------------------------- |
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44 | // Erase submeshes that have not indices. |
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45 | //------------------------------------------------------------------------- |
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46 | void MeshSimplifier::eraseVoidSubMeshes(Mesh *geoMesh) |
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47 | { |
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48 | SubMesh *geosubmesh; |
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49 | size_t valid_submesh_count; |
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50 | size_t submesh; |
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51 | |
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52 | valid_submesh_count = 0; |
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53 | |
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54 | // For each submesh. |
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55 | for (size_t i = 0; i < geoMesh->mSubMeshCount; i++) |
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56 | { |
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57 | if ((geoMesh->mSubMesh[i].mIndexCount > 0) |
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58 | || |
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59 | (indexMeshLeaves == i)) |
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60 | { |
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61 | valid_submesh_count++; |
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62 | } |
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63 | } |
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64 | |
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65 | // Reserve memory for valid submeshes. |
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66 | geosubmesh = new SubMesh[valid_submesh_count]; |
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67 | |
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68 | submesh = 0; |
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69 | |
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70 | // For each submesh. |
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71 | for (size_t i = 0; i < geoMesh->mSubMeshCount; i++) |
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72 | { |
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73 | // If leaves submesh is found. |
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74 | if (indexMeshLeaves == i) |
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75 | { |
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76 | geosubmesh[i].mStripCount = 0; |
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77 | geosubmesh[i].mStrip = NULL; |
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78 | |
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79 | geosubmesh[i].mSharedVertexBuffer = false; |
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80 | |
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81 | strcpy( geosubmesh[i].mMaterialName, |
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82 | mInitialMesh->mSubMesh[i].mMaterialName); |
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83 | |
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84 | // Copy submesh bones. |
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85 | if (!mInitialMesh->mSubMesh[i].mBones.empty()) |
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86 | { |
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87 | for ( size_t j = 0; |
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88 | j < mInitialMesh->mSubMesh[i].mBones.size(); |
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89 | j++) |
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90 | { |
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91 | geosubmesh[i].mBones.push_back(mInitialMesh-> |
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92 | mSubMesh[i].mBones[j]); |
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93 | } |
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94 | } |
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95 | |
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96 | // Leaves mesh. |
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97 | geosubmesh[i].mIndexCount = |
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98 | mInitialMesh->mSubMesh[i].mIndexCount; |
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99 | |
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100 | geosubmesh[i].mIndex = |
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101 | new Geometry::Index[geosubmesh[i].mIndexCount]; |
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102 | |
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103 | memcpy( geosubmesh[i].mIndex, |
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104 | mInitialMesh->mSubMesh[i].mIndex, |
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105 | mInitialMesh->mSubMesh[i].mIndexCount * sizeof(Index)); |
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106 | |
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107 | // Copy the leaves submesh vertices. |
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108 | geosubmesh[i].mVertexBuffer = |
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109 | mInitialMesh->mSubMesh[i].mVertexBuffer->Clone(); |
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110 | |
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111 | // Next valid submesh. |
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112 | submesh++; |
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113 | } |
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114 | else if (geoMesh->mSubMesh[i].mIndexCount > 0) |
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115 | { |
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116 | geosubmesh[submesh].mSharedVertexBuffer = |
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117 | geoMesh->mSubMesh[i].mSharedVertexBuffer; |
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118 | |
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119 | geosubmesh[submesh].mVertexBuffer = geoMesh->mVertexBuffer; |
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120 | |
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121 | geosubmesh[submesh].mType = geoMesh->mSubMesh[i].mType; |
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122 | |
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123 | geosubmesh[submesh].mStripCount = geoMesh->mSubMesh[i].mStripCount; |
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124 | |
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125 | geosubmesh[submesh].mIndexCount = geoMesh->mSubMesh[i].mIndexCount; |
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126 | |
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127 | // Reserve memory for indices. |
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128 | geosubmesh[submesh].mIndex = |
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129 | new Index[geosubmesh[submesh].mIndexCount]; |
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130 | |
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131 | // Copy indices. |
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132 | memcpy( geosubmesh[submesh].mIndex, |
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133 | geoMesh->mSubMesh[i].mIndex, |
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134 | geoMesh->mSubMesh[i].mIndexCount * sizeof(Index)); |
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135 | |
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136 | // Reserve memory for array of strips. |
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137 | geosubmesh[submesh].mStrip = |
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138 | new Index*[geoMesh->mSubMesh[submesh].mStripCount]; |
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139 | |
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140 | // Copy strip list of the submesh. |
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141 | for (size_t j = 0; j < geoMesh->mSubMesh[i].mStripCount; j++) |
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142 | { |
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143 | geosubmesh[submesh].mStrip[j] = geoMesh->mSubMesh[i].mStrip[j]; |
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144 | } |
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145 | |
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146 | strcpy( geosubmesh[submesh].mMaterialName, |
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147 | geoMesh->mSubMesh[i].mMaterialName); |
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148 | |
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149 | for (size_t j = 0; j < geoMesh->mSubMesh[i].mBones.size(); j++) |
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150 | { |
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151 | geosubmesh[submesh].mBones |
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152 | .push_back(geoMesh->mSubMesh[i].mBones[j]); |
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153 | } |
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154 | |
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155 | // Next valid submesh. |
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156 | submesh++; |
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157 | } |
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158 | } |
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159 | |
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160 | // Delete submeshes. |
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161 | delete []geoMesh->mSubMesh; |
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162 | |
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163 | geoMesh->mSubMeshCount = valid_submesh_count; |
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164 | geoMesh->mSubMesh = geosubmesh; |
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165 | } |
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166 | |
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167 | //------------------------------------------------------------------------- |
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168 | // Returns the simplified mesh. |
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169 | //------------------------------------------------------------------------- |
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170 | Mesh * MeshSimplifier::GetMesh() |
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171 | { |
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172 | // Delete void submeshes. |
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173 | eraseVoidSubMeshes(mGeoMesh); |
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174 | |
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175 | return mGeoMesh; |
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176 | } |
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177 | |
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178 | //------------------------------------------------------------------------- |
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179 | // Set submesh leaves |
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180 | //------------------------------------------------------------------------- |
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181 | void MeshSimplifier::setMeshLeaves(Geometry::Index index) |
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182 | { |
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183 | indexMeshLeaves = index; |
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184 | } |
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185 | |
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186 | //------------------------------------------------------------------------- |
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187 | // Returns the simplification sequence for general meshes. |
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188 | //------------------------------------------------------------------------- |
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189 | MeshSimplificationSequence *MeshSimplifier::GetSimplificationSequence() |
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190 | { |
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191 | return msimpsequence; |
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192 | } |
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193 | |
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194 | //------------------------------------------------------------------------- |
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195 | // Sort mesh bones. |
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196 | //------------------------------------------------------------------------- |
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197 | void MeshSimplifier::sortBones() |
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198 | { |
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199 | VertexBuffer *simplified_vb; |
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200 | VertexBuffer *initial_vb; |
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201 | |
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202 | std::vector<VertexBoneAssignment> *simplified_bones; |
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203 | std::vector<VertexBoneAssignment> *initial_bones; |
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204 | |
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205 | // After simplifying, the object always is shared vertex |
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206 | // so, the bones must be placed in the GeoMesh |
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207 | simplified_bones = &mGeoMesh->mBones; |
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208 | simplified_vb = mGeoMesh->mVertexBuffer; |
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209 | |
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210 | // we assume the original mesh is shared vertex |
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211 | // because before the simplification process |
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212 | // the mesh becomes converted to shared vertex |
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213 | // so, the original bones must be searched in the |
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214 | // Mesh, not in every submesh |
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215 | |
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216 | simplified_bones->clear(); |
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217 | |
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218 | // Vertex buffers. |
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219 | initial_vb = mInitialMesh->mVertexBuffer; |
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220 | |
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221 | // Bones. |
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222 | initial_bones = &mInitialMesh->mBones; |
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223 | |
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224 | // For each bone assignment. |
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225 | for (int b = 0; b < initial_bones->size(); b++) |
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226 | { |
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227 | VertexBoneAssignment assign; |
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228 | |
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229 | int n = (*initial_bones)[b].vertexIndex; |
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230 | |
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231 | // For each vertex. |
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232 | for (int i = 0; i < simplified_vb->mVertexCount; i++) |
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233 | { |
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234 | if (simplified_vb->mPosition[i].x == initial_vb->mPosition[n].x && |
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235 | simplified_vb->mPosition[i].y == initial_vb->mPosition[n].y && |
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236 | simplified_vb->mPosition[i].z == initial_vb->mPosition[n].z) |
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237 | { |
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238 | assign.vertexIndex = i; |
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239 | assign.boneIndex = (*initial_bones)[b].boneIndex; |
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240 | assign.weight = (*initial_bones)[b].weight; |
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241 | |
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242 | simplified_bones->push_back(assign); |
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243 | } |
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244 | } |
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245 | } |
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246 | } |
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247 | |
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248 | ////////////////////////////////////////////////////////////////////////// |
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249 | // // |
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250 | // GeometryBasedSimplifier class // |
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251 | // // |
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252 | ////////////////////////////////////////////////////////////////////////// |
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253 | |
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254 | //------------------------------------------------------------------------- |
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255 | // Constructor. |
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256 | //------------------------------------------------------------------------- |
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257 | GeometryBasedSimplifier::GeometryBasedSimplifier( const Mesh *m, |
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258 | TIPOFUNC upb) |
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259 | :MeshSimplifier(m,upb) |
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260 | { |
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261 | } |
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262 | |
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263 | //------------------------------------------------------------------------- |
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264 | // Destructor. |
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265 | //------------------------------------------------------------------------- |
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266 | GeometryBasedSimplifier::~GeometryBasedSimplifier() |
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267 | { |
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268 | } |
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269 | |
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270 | //------------------------------------------------------------------------- |
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271 | // Starts the simplification process. Receives as a parameter |
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272 | // the LOD factor in a range of [0,1]. Implements the Simplifier::Simplify |
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273 | // method to perform an image based simplification. |
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274 | //------------------------------------------------------------------------- |
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275 | int GeometryBasedSimplifier::Simplify(Real paramlod) |
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276 | { |
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277 | SimplificationMethod *m_qslim = new SimplificationMethod(mInitialMesh); |
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278 | |
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279 | m_qslim->setMeshLeaves(indexMeshLeaves); |
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280 | |
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281 | msimpsequence = m_qslim->Decimate(paramlod,0,mUPB); |
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282 | |
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283 | mGeoMesh = m_qslim->GetMesh(); |
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284 | |
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285 | delete m_qslim; |
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286 | |
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287 | return NO_GL_ERROR; |
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288 | } |
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289 | |
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290 | //------------------------------------------------------------------------- |
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291 | // Starts the simplification process. Receives as a parameter the |
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292 | // number of vertices of the resulting mesh. |
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293 | // Implements the Simplifier::Simplify method to |
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294 | // perform an image based simplification. |
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295 | //------------------------------------------------------------------------- |
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296 | int GeometryBasedSimplifier::Simplify(uint32 numvertices) |
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297 | { |
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298 | SimplificationMethod *m_qslim = new SimplificationMethod(mInitialMesh); |
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299 | |
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300 | m_qslim->setMeshLeaves(indexMeshLeaves); |
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301 | |
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302 | msimpsequence = m_qslim->Decimate((float)numvertices,1,mUPB); |
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303 | |
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304 | mGeoMesh = m_qslim->GetMesh(); |
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305 | |
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306 | delete m_qslim; |
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307 | |
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308 | return NO_GL_ERROR; |
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309 | } |
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310 | |
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311 | ////////////////////////////////////////////////////////////////////////// |
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312 | // // |
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313 | // ViewPointDrivenSimplifier class // |
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314 | // // |
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315 | ////////////////////////////////////////////////////////////////////////// |
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316 | |
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317 | //------------------------------------------------------------------------ |
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318 | // Class constructor. Will call Simplifier class constructor. |
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319 | //------------------------------------------------------------------------ |
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320 | ViewPointDrivenSimplifier::ViewPointDrivenSimplifier( const Mesh *m, |
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321 | TIPOFUNC upb) |
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322 | :MeshSimplifier(m,upb) |
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323 | { |
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324 | // Set progress update function |
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325 | VMI::mUPB = upb; |
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326 | |
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327 | VMI::width = 256; |
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328 | VMI::height = 256; |
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329 | |
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330 | VMI::bEnableOffScreen = GL_TRUE; |
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331 | VMI::bBeQuiet = GL_FALSE; |
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332 | VMI::bSaveLog = GL_FALSE; |
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333 | VMI::bLoadCamerasFromFile = GL_FALSE; |
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334 | VMI::bRemoveRedundantVertices = GL_TRUE; |
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335 | |
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336 | VMI::cameraType = 3; // 20 viewpoints |
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337 | VMI::radius = 1.3; |
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338 | VMI::fov = 60.0; |
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339 | |
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340 | printf("w: %d h: %d\n", VMI::width, VMI::height); |
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341 | |
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342 | printf( "t: %d c: %d o: %d r: %f\n", |
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343 | VMI::numDemandedTriangles, |
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344 | VMI::cameraType, |
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345 | VMI::bEnableOffScreen, |
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346 | VMI::radius); |
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347 | |
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348 | // Fill up attributes. |
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349 | fillUpPosNorTC(mInitialMesh); |
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350 | |
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351 | VMI::vPositions = vPositions; |
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352 | VMI::vNormals = vNormals; |
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353 | VMI::vTexCoords = vTexCoords; |
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354 | |
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355 | mGeoMesh = new Mesh(); |
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356 | |
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357 | *mGeoMesh = *m; |
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358 | |
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359 | // Transform NoSV Mesh to a SV Mesh. |
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360 | //mGeoMesh = mGeoMesh->toSharedVertex(); |
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361 | |
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362 | // Join Vertices. |
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363 | mTexConserver = new TextureConserver(); |
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364 | mTexConserver->JoinVertices(mGeoMesh); |
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365 | |
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366 | // Loads the vmi mesh structure for a geometry mesh given. |
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367 | VMI::mesh = initMeshStructure(mGeoMesh); |
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368 | } |
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369 | |
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370 | //------------------------------------------------------------------------ |
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371 | // Init VMI options. |
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372 | //------------------------------------------------------------------------ |
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373 | int ViewPointDrivenSimplifier::init(void) |
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374 | { |
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375 | int error; |
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376 | |
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377 | // RGB and Alpha. |
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378 | glutInitDisplayMode(GLUT_DEPTH | GLUT_RGBA | GLUT_DOUBLE | GLUT_ALPHA); |
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379 | glutInitWindowSize(VMI::width, VMI::height); |
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380 | glutInitWindowPosition(100, 100); |
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381 | |
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382 | VMI::vmiWin = glutCreateWindow("VMI"); |
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383 | |
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384 | glewInit(); |
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385 | |
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386 | error = VMI::init(); |
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387 | |
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388 | if (VMI::bLoadCamerasFromFile == GL_FALSE) |
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389 | VMI::cameras = VMI::setCameras( VMI::radius, |
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390 | VMI::cameraType, |
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391 | &VMI::numCameras); |
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392 | |
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393 | VMI::histogram = VMI::initHistogram( VMI::mesh->currentNumTriangles, |
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394 | VMI::numCameras); |
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395 | |
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396 | VMI::initialIs = VMI::initIs(VMI::numCameras); |
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397 | |
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398 | return error; |
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399 | } |
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400 | |
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401 | //------------------------------------------------------------------------- |
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402 | /// Class destructor. |
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403 | //------------------------------------------------------------------------- |
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404 | ViewPointDrivenSimplifier::~ViewPointDrivenSimplifier(void) |
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405 | { |
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406 | // Free memory |
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407 | VMI::freeMemory(); |
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408 | |
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409 | delete VMI::mSequence; |
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410 | VMI::mSequence = NULL; |
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411 | } |
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412 | |
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413 | /// Starts the simplification process. Receives as a parameter the |
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414 | /// LOD factor in a range of [0,1]. Implements the |
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415 | /// Simplifier::Simplify method to perform an image based simplification. |
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416 | int ViewPointDrivenSimplifier::Simplify(Real percent) |
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417 | { |
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418 | int error; |
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419 | |
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420 | error = init(); |
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421 | |
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422 | VMI::numDemandedTriangles = (int)(VMI::mesh->numTriangles * percent); |
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423 | |
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424 | if ((VMI::numDemandedTriangles == 0) |
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425 | || |
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426 | (VMI::numDemandedTriangles >= VMI::mesh->currentNumTriangles)) |
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427 | { |
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428 | printf("Illegal number of triangles.\n"); |
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429 | } |
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430 | |
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431 | if (error == NO_GL_ERROR) |
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432 | { |
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433 | VMI::display(); |
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434 | |
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435 | // Cleans firts simplification. |
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436 | VMI::freeMemory(); |
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437 | |
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438 | VMI::mesh = initMeshStructure(mInitialMesh); |
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439 | |
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440 | VMI::contractInitialMesh(VMI::mesh); |
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441 | |
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442 | // Load a geometry mesh for vmi mesh. |
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443 | loadMesh(); |
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444 | |
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445 | GetMeshSimpSequence(); |
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446 | |
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447 | // Sort bones. |
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448 | bonesReassignament(); |
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449 | } |
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450 | |
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451 | return error; |
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452 | } |
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453 | |
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454 | //------------------------------------------------------------------------- |
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455 | /// Starts the simplification process. Receives as a parameter |
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456 | /// the number of vertices of the resulting mesh. |
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457 | /// Implements the Simplifier::Simplify method to perform |
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458 | /// an image based simplification. |
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459 | //------------------------------------------------------------------------- |
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460 | int ViewPointDrivenSimplifier::Simplify(uint32 numVertices) |
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461 | { |
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462 | float percent; |
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463 | int error; |
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464 | |
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465 | error = init(); |
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466 | |
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467 | percent = (numVertices * 100.0) / VMI::mesh->numVertices; |
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468 | |
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469 | VMI::numDemandedTriangles = (int)(VMI::mesh->numTriangles |
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470 | * |
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471 | (percent / 100)); |
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472 | |
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473 | if ((VMI::numDemandedTriangles == 0) |
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474 | || |
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475 | (VMI::numDemandedTriangles >= VMI::mesh->currentNumTriangles)) |
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476 | { |
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477 | printf("Illegal number of triangles.\n"); |
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478 | } |
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479 | |
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480 | if (error == NO_GL_ERROR) |
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481 | { |
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482 | VMI::display(); |
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483 | |
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484 | // Cleans firts simplification. |
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485 | VMI::freeMemory(); |
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486 | |
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487 | VMI::mesh = initMeshStructure(mInitialMesh); |
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488 | |
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489 | VMI::contractInitialMesh(VMI::mesh); |
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490 | |
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491 | // Load a geometry mesh for vmi mesh. |
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492 | loadMesh(); |
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493 | |
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494 | GetMeshSimpSequence(); |
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495 | |
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496 | // Sort bones. |
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497 | bonesReassignament(); |
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498 | } |
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499 | |
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500 | return error; |
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501 | } |
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502 | |
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503 | //------------------------------------------------------------------------- |
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504 | // Gets the VMI mesh simplification sequence. |
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505 | //------------------------------------------------------------------------- |
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506 | void ViewPointDrivenSimplifier::GetMeshSimpSequence() |
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507 | { |
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508 | size_t j = 0; |
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509 | |
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510 | MeshSimplificationSequence::Step current_step; |
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511 | |
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512 | msimpsequence = new MeshSimplificationSequence(); |
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513 | |
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514 | // Copy the mesh simplification sequence. |
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515 | msimpsequence->mSteps = VMI::mSequence->mSteps; |
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516 | msimpsequence->mNewVertices = VMI::mSequence->mNewVertices; |
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517 | |
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518 | cout << "Steps of simplification: " |
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519 | << msimpsequence->mSteps.size() |
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520 | << " Number of new vertices: " |
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521 | << msimpsequence->mNewVertices.size() |
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522 | << endl; |
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523 | } |
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524 | |
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525 | //------------------------------------------------------------------------- |
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526 | // Initialize the mesh of VMI module. |
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527 | //------------------------------------------------------------------------- |
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528 | VMI::Mesh * ViewPointDrivenSimplifier::initMeshStructure(Mesh *geoMesh) |
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529 | { |
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530 | GLuint i, j, v1, v2, v3, e; |
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531 | float x, y, z; |
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532 | VMI::Mesh *vmi_mesh; |
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533 | SubMesh *geosubmesh; |
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534 | VertexBuffer *vertex_buffer; |
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535 | int mesh_index_count; |
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536 | |
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537 | // Reallocate memory for vmi mesh object. |
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538 | vmi_mesh = (VMI::Mesh *)malloc(sizeof(VMI::Mesh)); |
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539 | |
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540 | if (vmi_mesh == NULL) |
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541 | { |
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542 | fprintf(stderr, "Error allocating memory\n"); |
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543 | exit(1); |
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544 | } |
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545 | |
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546 | // Shared vertex buffer. |
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547 | vertex_buffer = geoMesh->mVertexBuffer; |
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548 | |
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549 | // Reallocate memory for vertices of mesh. |
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550 | vmi_mesh->vertices = (VMI::Vertex *)malloc(sizeof(VMI::Vertex) |
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551 | * |
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552 | vertex_buffer->mVertexCount); |
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553 | vmi_mesh->numVertices = 0; |
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554 | |
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555 | if (vmi_mesh->vertices == NULL) |
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556 | { |
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557 | fprintf(stderr, "Error allocating memory\n"); |
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558 | exit(1); |
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559 | } |
---|
560 | |
---|
561 | // Initialize mesh index count. |
---|
562 | mesh_index_count = 0; |
---|
563 | |
---|
564 | for ( unsigned int submesh = 0; |
---|
565 | submesh < geoMesh->mSubMeshCount; |
---|
566 | submesh++) |
---|
567 | { |
---|
568 | mesh_index_count += int(geoMesh->mSubMesh[submesh].mIndexCount); |
---|
569 | } |
---|
570 | |
---|
571 | // Reallocate memory for indices. |
---|
572 | vmi_mesh->triangles = (VMI::Triangle *)malloc(sizeof(VMI::Triangle) |
---|
573 | * |
---|
574 | (mesh_index_count / 3)); |
---|
575 | vmi_mesh->numTriangles = 0; |
---|
576 | |
---|
577 | if (vmi_mesh->triangles == NULL) |
---|
578 | { |
---|
579 | fprintf(stderr, "Error allocating memory\n"); |
---|
580 | exit(1); |
---|
581 | } |
---|
582 | |
---|
583 | printf("Adding vertices..."); |
---|
584 | |
---|
585 | // Fill up vertices. |
---|
586 | for (i = 0; i < vertex_buffer->mVertexCount; i++) |
---|
587 | { |
---|
588 | // Vertices start at 0. |
---|
589 | x = vertex_buffer->mPosition[i].x; |
---|
590 | y = vertex_buffer->mPosition[i].y; |
---|
591 | z = vertex_buffer->mPosition[i].z; |
---|
592 | |
---|
593 | addVertex(vmi_mesh, x, y, z); |
---|
594 | } |
---|
595 | |
---|
596 | printf("Ok\n"); |
---|
597 | vmi_mesh->currentNumVertices = vmi_mesh->numVertices; |
---|
598 | |
---|
599 | printf("Vertices: %d\n",vmi_mesh->numVertices); |
---|
600 | |
---|
601 | // Fill up triangles. |
---|
602 | printf("Adding triangles..."); |
---|
603 | |
---|
604 | // For each submesh. |
---|
605 | for ( unsigned int submesh = 0; |
---|
606 | submesh < geoMesh->mSubMeshCount; |
---|
607 | submesh++) |
---|
608 | { |
---|
609 | // Gets actual submesh. |
---|
610 | geosubmesh = &geoMesh->mSubMesh[submesh]; |
---|
611 | |
---|
612 | // For each three vertices. |
---|
613 | for (i = 0; i < (geosubmesh->mIndexCount / 3); i++) |
---|
614 | { |
---|
615 | v1 = geosubmesh->mIndex[(3 * i)]; |
---|
616 | v2 = geosubmesh->mIndex[(3 * i) + 1]; |
---|
617 | v3 = geosubmesh->mIndex[(3 * i) + 2]; |
---|
618 | |
---|
619 | // not a degenerated triangle |
---|
620 | //if ((v1 != v2) && (v2 != v3) && (v1 != v3)) { |
---|
621 | |
---|
622 | addTriangle(vmi_mesh, submesh, v1, v2, v3); |
---|
623 | //} |
---|
624 | } |
---|
625 | } |
---|
626 | |
---|
627 | printf("Ok\n"); |
---|
628 | |
---|
629 | vmi_mesh->currentNumTriangles = vmi_mesh->numTriangles; |
---|
630 | printf("Number of triangles: %d\n", vmi_mesh->numTriangles); |
---|
631 | //printf("Number of degenerated triangles: %d\n", pmodel->numtriangles - vmi_mesh->numTriangles); |
---|
632 | |
---|
633 | // E = 3 T / 2 |
---|
634 | vmi_mesh->edges = (VMI::Edge *)malloc(sizeof(VMI::Edge) |
---|
635 | * |
---|
636 | vmi_mesh->numTriangles * 3); |
---|
637 | vmi_mesh->numEdges = 0; |
---|
638 | |
---|
639 | if (vmi_mesh->edges == NULL) |
---|
640 | { |
---|
641 | fprintf(stderr, "Error allocating memory\n"); |
---|
642 | exit(1); |
---|
643 | } |
---|
644 | |
---|
645 | printf("Adding edges..."); |
---|
646 | |
---|
647 | // For each triangle adds three edges. |
---|
648 | for (i = 0; i < vmi_mesh->numTriangles; i++) |
---|
649 | { |
---|
650 | v1 = vmi_mesh->triangles[i].indices[0]; |
---|
651 | v2 = vmi_mesh->triangles[i].indices[1]; |
---|
652 | v3 = vmi_mesh->triangles[i].indices[2]; |
---|
653 | |
---|
654 | if ((e = findEdge(vmi_mesh->edges, vmi_mesh->numEdges, v1, v2)) == -1) |
---|
655 | { |
---|
656 | addEdge(vmi_mesh, v1, v2); |
---|
657 | } |
---|
658 | |
---|
659 | if ((e = findEdge(vmi_mesh->edges, vmi_mesh->numEdges, v2, v3)) == -1) |
---|
660 | { |
---|
661 | addEdge(vmi_mesh, v2, v3); |
---|
662 | } |
---|
663 | |
---|
664 | if ((e = findEdge(vmi_mesh->edges, vmi_mesh->numEdges, v3, v1)) == -1) |
---|
665 | { |
---|
666 | addEdge(vmi_mesh, v3, v1); |
---|
667 | } |
---|
668 | } |
---|
669 | |
---|
670 | printf("Ok\n"); |
---|
671 | |
---|
672 | // Creates vertex multimap. |
---|
673 | initVertexMultimap(vmi_mesh,mTexConserver->mVertices); |
---|
674 | |
---|
675 | return vmi_mesh; |
---|
676 | } |
---|
677 | |
---|
678 | //------------------------------------------------------------------------- |
---|
679 | // Gets the geometry mesh of a the vmi mesh given. |
---|
680 | //------------------------------------------------------------------------- |
---|
681 | void ViewPointDrivenSimplifier::loadMesh() |
---|
682 | { |
---|
683 | int num_indices; |
---|
684 | SubMesh *geosubmesh; |
---|
685 | VertexBuffer *vertex_buffer; |
---|
686 | |
---|
687 | // Gets old vertex buffer. |
---|
688 | vertex_buffer = mGeoMesh->mVertexBuffer; |
---|
689 | |
---|
690 | // Initialize auxiliar vertex buffer. |
---|
691 | mVB = new VertexBuffer(); |
---|
692 | |
---|
693 | mVB->mPosition = new Vector3[VMI::mesh->currentNumVertices]; |
---|
694 | mVB->mNormal = new Vector3[VMI::mesh->currentNumVertices]; |
---|
695 | mVB->mTexCoords = new Vector2[VMI::mesh->currentNumVertices]; |
---|
696 | |
---|
697 | mVB->mVertexInfo = vertex_buffer->mVertexInfo; |
---|
698 | |
---|
699 | // For each submesh. |
---|
700 | for (size_t submesh = 0; submesh < mGeoMesh->mSubMeshCount; submesh++) |
---|
701 | { |
---|
702 | geosubmesh = &mGeoMesh->mSubMesh[submesh]; |
---|
703 | |
---|
704 | delete []geosubmesh->mIndex; |
---|
705 | |
---|
706 | // Initialize submesh index count; |
---|
707 | num_indices = 0; |
---|
708 | |
---|
709 | // For each triangle. |
---|
710 | for (size_t i = 0; i < VMI::mesh->numTriangles; i++) |
---|
711 | { |
---|
712 | // If is enable and of the current submesh. |
---|
713 | if ((VMI::mesh->triangles[i].enable) |
---|
714 | && |
---|
715 | (VMI::mesh->triangles[i].submesh == submesh)) |
---|
716 | { |
---|
717 | // Increments submesh index count. |
---|
718 | num_indices += 3; |
---|
719 | } |
---|
720 | } |
---|
721 | |
---|
722 | geosubmesh->mIndexCount = num_indices; |
---|
723 | |
---|
724 | geosubmesh->mIndex = new Geometry::Index[geosubmesh->mIndexCount]; |
---|
725 | |
---|
726 | // Initialize number of indices. |
---|
727 | num_indices = 0; |
---|
728 | |
---|
729 | // Fill up indices. |
---|
730 | for (size_t i = 0; i < VMI::mesh->numTriangles; i++) |
---|
731 | { |
---|
732 | if ((VMI::mesh->triangles[i].enable) |
---|
733 | && |
---|
734 | (VMI::mesh->triangles[i].submesh == submesh)) |
---|
735 | { |
---|
736 | geosubmesh->mIndex[num_indices++] = |
---|
737 | VMI::mesh->triangles[i].indices[0]; |
---|
738 | |
---|
739 | geosubmesh->mIndex[num_indices++] = |
---|
740 | VMI::mesh->triangles[i].indices[1]; |
---|
741 | |
---|
742 | geosubmesh->mIndex[num_indices++] = |
---|
743 | VMI::mesh->triangles[i].indices[2]; |
---|
744 | } |
---|
745 | } |
---|
746 | |
---|
747 | // For each index. |
---|
748 | for (size_t i = 0; i < geosubmesh->mIndexCount; i++) |
---|
749 | { |
---|
750 | findVertex(submesh,i); |
---|
751 | } |
---|
752 | |
---|
753 | geosubmesh->mVertexBuffer = mVB; |
---|
754 | } |
---|
755 | |
---|
756 | delete vertex_buffer; |
---|
757 | |
---|
758 | mGeoMesh->mVertexBuffer = mVB; |
---|
759 | } |
---|
760 | |
---|
761 | //------------------------------------------------------------------------- |
---|
762 | // Find vertex in auxiliar vertex buffer. |
---|
763 | //------------------------------------------------------------------------- |
---|
764 | void ViewPointDrivenSimplifier::findVertex(size_t submesh, size_t elem) |
---|
765 | { |
---|
766 | bool found; |
---|
767 | int index; |
---|
768 | unsigned int i; |
---|
769 | int new_elem; |
---|
770 | VertexBuffer *vertex_buffer; |
---|
771 | map<int,int>::iterator it; |
---|
772 | |
---|
773 | found = false; |
---|
774 | |
---|
775 | // Shared vertex buffer. |
---|
776 | vertex_buffer = mInitialMesh->mVertexBuffer; |
---|
777 | |
---|
778 | index = mGeoMesh->mSubMesh[submesh].mIndex[elem]; |
---|
779 | |
---|
780 | i = 0; |
---|
781 | |
---|
782 | if ((it = mIndexMap.find(index)) != mIndexMap.end()) |
---|
783 | { |
---|
784 | mGeoMesh->mSubMesh[submesh].mIndex[elem] = (*it).second; |
---|
785 | } |
---|
786 | else |
---|
787 | { |
---|
788 | mIndexMap[index] = int(mVB->mVertexCount); |
---|
789 | |
---|
790 | // Last element. |
---|
791 | new_elem = int(mVB->mVertexCount); |
---|
792 | |
---|
793 | mVB->mPosition[new_elem] = VMI::vPositions[index]; |
---|
794 | mVB->mNormal[new_elem] = VMI::vNormals[index]; |
---|
795 | mVB->mTexCoords[new_elem] = VMI::vTexCoords[index]; |
---|
796 | |
---|
797 | // Update index. |
---|
798 | mGeoMesh->mSubMesh[submesh].mIndex[elem] = new_elem; |
---|
799 | |
---|
800 | // Increments vertex count. |
---|
801 | mVB->mVertexCount++; |
---|
802 | } |
---|
803 | } |
---|
804 | |
---|
805 | //------------------------------------------------------------------------- |
---|
806 | // Reassigns bones. |
---|
807 | //------------------------------------------------------------------------- |
---|
808 | void ViewPointDrivenSimplifier::bonesReassignament() |
---|
809 | { |
---|
810 | size_t vertex_id; |
---|
811 | size_t bones_count; |
---|
812 | bool vertex_found; |
---|
813 | map<int,int>::iterator im; |
---|
814 | VertexBoneAssignment bone; |
---|
815 | |
---|
816 | vector<VertexBoneAssignment>::iterator ib; |
---|
817 | |
---|
818 | // Copy new vertices. |
---|
819 | for (unsigned int i = 0; i < msimpsequence->mNewVertices.size(); i++) |
---|
820 | { |
---|
821 | vertex_id = msimpsequence->mNewVertices[i].id; |
---|
822 | |
---|
823 | // Initialize number of bones. |
---|
824 | bones_count = mInitialMesh->mBones.size(); |
---|
825 | |
---|
826 | // check if my twin-vertex-bone has a bone assignment |
---|
827 | // we check only the GeoMesh bones because the lodstrips |
---|
828 | // only works for sharedvertex bones. |
---|
829 | for (int j = 0; j < bones_count; j++) |
---|
830 | { |
---|
831 | ib = mInitialMesh->mBones.begin() + j; |
---|
832 | |
---|
833 | if (ib->vertexIndex == msimpsequence->mNewVertices[i].bonefrom) |
---|
834 | { |
---|
835 | bone.vertexIndex = vertex_id; |
---|
836 | bone.boneIndex = ib->boneIndex; |
---|
837 | bone.weight = ib->weight; |
---|
838 | |
---|
839 | mInitialMesh->mBones.push_back(bone); |
---|
840 | bones_count++; |
---|
841 | } |
---|
842 | } |
---|
843 | } |
---|
844 | |
---|
845 | // Clears bones. |
---|
846 | mGeoMesh->mBones.clear(); |
---|
847 | |
---|
848 | // For each bone assignment. |
---|
849 | for (unsigned int i = 0; i < mInitialMesh->mBones.size(); i++) |
---|
850 | { |
---|
851 | bone.vertexIndex = mInitialMesh->mBones[i].vertexIndex; |
---|
852 | bone.boneIndex = mInitialMesh->mBones[i].boneIndex; |
---|
853 | bone.weight = mInitialMesh->mBones[i].weight; |
---|
854 | |
---|
855 | vertex_found = false; |
---|
856 | |
---|
857 | // If the vertex is found in the simplification model. |
---|
858 | if ((im = mIndexMap.find(bone.vertexIndex)) |
---|
859 | != |
---|
860 | mIndexMap.end()) |
---|
861 | { |
---|
862 | bone.vertexIndex = (*im).second; |
---|
863 | |
---|
864 | mGeoMesh->mBones.push_back(bone); |
---|
865 | |
---|
866 | vertex_found = true; |
---|
867 | } |
---|
868 | } |
---|
869 | } |
---|
870 | |
---|
871 | //------------------------------------------------------------------------- |
---|
872 | // Fill up position, normal and texture coordinates. |
---|
873 | //------------------------------------------------------------------------- |
---|
874 | void ViewPointDrivenSimplifier::fillUpPosNorTC(Mesh *geoMesh) |
---|
875 | { |
---|
876 | VertexBuffer *vertex_buffer; |
---|
877 | Vector3 v3; |
---|
878 | Vector2 v2; |
---|
879 | |
---|
880 | vertex_buffer = geoMesh->mVertexBuffer; |
---|
881 | |
---|
882 | for (size_t i = 0; i < vertex_buffer->mVertexCount; i++) |
---|
883 | { |
---|
884 | v3 = vertex_buffer->mPosition[i]; |
---|
885 | |
---|
886 | vPositions.push_back(v3); |
---|
887 | |
---|
888 | v3 = vertex_buffer->mNormal[i]; |
---|
889 | |
---|
890 | vNormals.push_back(v3); |
---|
891 | |
---|
892 | v2 = vertex_buffer->mTexCoords[i]; |
---|
893 | |
---|
894 | vTexCoords.push_back(v2); |
---|
895 | } |
---|
896 | } |
---|
897 | |
---|
898 | //------------------------------------------------------------------------- |
---|
899 | // EdgesMultimap class |
---|
900 | //------------------------------------------------------------------------- |
---|
901 | |
---|
902 | //------------------------------------------------------------------------- |
---|
903 | // Constructor. |
---|
904 | //------------------------------------------------------------------------- |
---|
905 | EdgesMultimap::EdgesMultimap() |
---|
906 | { |
---|
907 | } |
---|
908 | |
---|
909 | //------------------------------------------------------------------------- |
---|
910 | // Destructor. |
---|
911 | //------------------------------------------------------------------------- |
---|
912 | EdgesMultimap::~EdgesMultimap() |
---|
913 | { |
---|
914 | edges.clear(); |
---|
915 | } |
---|
916 | |
---|
917 | //------------------------------------------------------------------------- |
---|
918 | // Insert and edge. |
---|
919 | //------------------------------------------------------------------------- |
---|
920 | void EdgesMultimap::insert(int v1,int v2) |
---|
921 | { |
---|
922 | edges.insert(pair<int,int>(v1,v2)); |
---|
923 | edges.insert(pair<int,int>(v2,v1)); |
---|
924 | } |
---|
925 | |
---|
926 | //------------------------------------------------------------------------- |
---|
927 | // Remove edges with v1 and v2. |
---|
928 | //------------------------------------------------------------------------- |
---|
929 | void EdgesMultimap::remove(int v1,int v2) |
---|
930 | { |
---|
931 | multimap<int,int>::iterator lb; |
---|
932 | multimap<int,int>::iterator ub; |
---|
933 | |
---|
934 | if (edges.find(v1) != edges.end()) |
---|
935 | { |
---|
936 | lb = edges.lower_bound(v1); |
---|
937 | ub = edges.upper_bound(v1); |
---|
938 | |
---|
939 | while (lb != ub) |
---|
940 | { |
---|
941 | if ((*lb).second == v2) |
---|
942 | { |
---|
943 | // Remove edge. |
---|
944 | edges.erase(lb); |
---|
945 | |
---|
946 | lb = ub; |
---|
947 | } |
---|
948 | else |
---|
949 | { |
---|
950 | lb++; |
---|
951 | } |
---|
952 | } |
---|
953 | } |
---|
954 | |
---|
955 | if (edges.find(v2) != edges.end()) |
---|
956 | { |
---|
957 | lb = edges.lower_bound(v2); |
---|
958 | ub = edges.upper_bound(v2); |
---|
959 | |
---|
960 | while (lb != ub) |
---|
961 | { |
---|
962 | if ((*lb).second == v1) |
---|
963 | { |
---|
964 | // Remove edge. |
---|
965 | edges.erase(lb); |
---|
966 | |
---|
967 | lb = ub; |
---|
968 | } |
---|
969 | else |
---|
970 | { |
---|
971 | lb++; |
---|
972 | } |
---|
973 | } |
---|
974 | } |
---|
975 | |
---|
976 | } |
---|
977 | |
---|
978 | //------------------------------------------------------------------------- |
---|
979 | // Checks if the edge (v1,v2) exists. |
---|
980 | //------------------------------------------------------------------------- |
---|
981 | bool EdgesMultimap::exists(int v1,int v2) |
---|
982 | { |
---|
983 | bool found; |
---|
984 | multimap<int,int>::iterator lb; |
---|
985 | multimap<int,int>::iterator ub; |
---|
986 | |
---|
987 | found = false; |
---|
988 | |
---|
989 | // Find range. |
---|
990 | lb = edges.lower_bound(v1); |
---|
991 | ub = edges.upper_bound(v1); |
---|
992 | |
---|
993 | // Search for all v1 edges. |
---|
994 | while (lb != ub) |
---|
995 | { |
---|
996 | // If edge is found. |
---|
997 | if ((*lb).second = v2) |
---|
998 | { |
---|
999 | found = true; |
---|
1000 | lb = ub; |
---|
1001 | } |
---|
1002 | else |
---|
1003 | { |
---|
1004 | // Next iteration. |
---|
1005 | lb++; |
---|
1006 | } |
---|
1007 | } |
---|
1008 | |
---|
1009 | return found; |
---|
1010 | } |
---|
1011 | |
---|
1012 | //------------------------------------------------------------------------- |
---|
1013 | // Change vertex v1 to v2 in the map. |
---|
1014 | //------------------------------------------------------------------------- |
---|
1015 | void EdgesMultimap::contract(int v1,int v2) |
---|
1016 | { |
---|
1017 | multimap<int,int>::iterator it; |
---|
1018 | int v_aux; |
---|
1019 | |
---|
1020 | // Remove contracted edge. |
---|
1021 | remove(v1,v2); |
---|
1022 | |
---|
1023 | // Modify all edges where appears v1 to v2. |
---|
1024 | while ((it = edges.find(v1)) != edges.end()) |
---|
1025 | { |
---|
1026 | v_aux = (*it).second; |
---|
1027 | |
---|
1028 | // Remove current edge. |
---|
1029 | remove(v1,v_aux); |
---|
1030 | |
---|
1031 | // Modify edge. |
---|
1032 | insert(v2,v_aux); |
---|
1033 | } |
---|
1034 | } |
---|
1035 | |
---|
1036 | //------------------------------------------------------------------------- |
---|
1037 | // TextureConserver class |
---|
1038 | //------------------------------------------------------------------------- |
---|
1039 | TextureConserver::TextureConserver() |
---|
1040 | { |
---|
1041 | mEdges = new EdgesMultimap(); |
---|
1042 | mGeoMesh = new Mesh(); |
---|
1043 | } |
---|
1044 | |
---|
1045 | TextureConserver::~TextureConserver() |
---|
1046 | { |
---|
1047 | delete mGeoMesh; |
---|
1048 | delete mEdges; |
---|
1049 | } |
---|
1050 | |
---|
1051 | //------------------------------------------------------------------------- |
---|
1052 | // Join twin vertices into a unique vertex. |
---|
1053 | //------------------------------------------------------------------------- |
---|
1054 | void TextureConserver::JoinVertices(Mesh *mesh) |
---|
1055 | { |
---|
1056 | map<_coord_, int> uniquevertices; |
---|
1057 | map<int, int> newindices; |
---|
1058 | multimap<int, int>::iterator it; |
---|
1059 | map<int, int>::iterator it_map; |
---|
1060 | VertexBuffer *vertex_buffer; |
---|
1061 | VertexBuffer *mGMVB; |
---|
1062 | unsigned int vertex_count; |
---|
1063 | unsigned int i; |
---|
1064 | unsigned int aux_i; |
---|
1065 | unsigned int submesh; |
---|
1066 | SubMesh *geosubmesh; |
---|
1067 | _coord_ vertex_aux; |
---|
1068 | |
---|
1069 | // Copy actual mesh. |
---|
1070 | *mGeoMesh = *mesh; |
---|
1071 | |
---|
1072 | // Gets the shared vertex buffer. |
---|
1073 | vertex_buffer = mGeoMesh->mVertexBuffer; |
---|
1074 | |
---|
1075 | // Initialize unique vertices count. |
---|
1076 | vertex_count = 0; |
---|
1077 | |
---|
1078 | // Fill up vertices. |
---|
1079 | for (i = 0; i < vertex_buffer->mVertexCount; i++) |
---|
1080 | { |
---|
1081 | vertex_aux.x = vertex_buffer->mPosition[i].x; |
---|
1082 | vertex_aux.y = vertex_buffer->mPosition[i].y; |
---|
1083 | vertex_aux.z = vertex_buffer->mPosition[i].z; |
---|
1084 | |
---|
1085 | // New index. |
---|
1086 | if (uniquevertices.find(vertex_aux) == uniquevertices.end()) |
---|
1087 | { |
---|
1088 | uniquevertices[vertex_aux] = vertex_count; |
---|
1089 | newindices[i] = vertex_count; |
---|
1090 | |
---|
1091 | mVertices.insert(pair<int,int>(vertex_count,i)); |
---|
1092 | |
---|
1093 | // Increments unique vertices count. |
---|
1094 | vertex_count++; |
---|
1095 | } |
---|
1096 | // The map of unique vertices already contains this vertex. |
---|
1097 | else |
---|
1098 | { |
---|
1099 | int newindex = uniquevertices[vertex_aux]; |
---|
1100 | newindices[i] = newindex; |
---|
1101 | |
---|
1102 | mVertices.insert(pair<int,int>(newindex,i)); |
---|
1103 | } |
---|
1104 | } |
---|
1105 | |
---|
1106 | // Delete vertices. |
---|
1107 | delete mesh->mVertexBuffer; |
---|
1108 | |
---|
1109 | mesh->mVertexBuffer = new VertexBuffer(); |
---|
1110 | |
---|
1111 | mesh->mVertexBuffer->mPosition = new Vector3[vertex_count]; |
---|
1112 | mesh->mVertexBuffer->mNormal = new Vector3[vertex_count]; |
---|
1113 | mesh->mVertexBuffer->mTexCoords = new Vector2[vertex_count]; |
---|
1114 | |
---|
1115 | mesh->mVertexBuffer->mVertexInfo = vertex_buffer->mVertexInfo; |
---|
1116 | mesh->mVertexBuffer->mVertexCount = vertex_count; |
---|
1117 | |
---|
1118 | mGMVB = mesh->mVertexBuffer; |
---|
1119 | |
---|
1120 | // Fill up unique vertices. |
---|
1121 | for (i = 0; i < vertex_count; i++) |
---|
1122 | { |
---|
1123 | // Find first ocurrence of unique vertex. |
---|
1124 | it = mVertices.find(i); |
---|
1125 | |
---|
1126 | aux_i = (*it).second; |
---|
1127 | |
---|
1128 | mGMVB->mPosition[i].x = vertex_buffer->mPosition[aux_i].x; |
---|
1129 | mGMVB->mPosition[i].y = vertex_buffer->mPosition[aux_i].y; |
---|
1130 | mGMVB->mPosition[i].z = vertex_buffer->mPosition[aux_i].z; |
---|
1131 | |
---|
1132 | mGMVB->mNormal[i].x = vertex_buffer->mNormal[aux_i].x; |
---|
1133 | mGMVB->mNormal[i].y = vertex_buffer->mNormal[aux_i].y; |
---|
1134 | mGMVB->mNormal[i].z = vertex_buffer->mNormal[aux_i].z; |
---|
1135 | |
---|
1136 | mGMVB->mTexCoords[i].x = vertex_buffer->mTexCoords[aux_i].x; |
---|
1137 | mGMVB->mTexCoords[i].y = vertex_buffer->mTexCoords[aux_i].y; |
---|
1138 | } |
---|
1139 | |
---|
1140 | // Fill up indices to unique vertices. |
---|
1141 | // For each submesh. |
---|
1142 | for (submesh = 0; submesh < mesh->mSubMeshCount; submesh++) |
---|
1143 | { |
---|
1144 | geosubmesh = &mesh->mSubMesh[submesh]; |
---|
1145 | |
---|
1146 | // Change indices. |
---|
1147 | for (i = 0; i < geosubmesh->mIndexCount; i++) |
---|
1148 | { |
---|
1149 | // Unique index asociated to the given one. |
---|
1150 | it_map = newindices.find(geosubmesh->mIndex[i]); |
---|
1151 | |
---|
1152 | geosubmesh->mIndex[i] = (*it_map).second; |
---|
1153 | } |
---|
1154 | } |
---|
1155 | } |
---|
1156 | |
---|
1157 | //------------------------------------------------------------------------- |
---|
1158 | // Return mesh that may have repeated vertices for texture aparence. |
---|
1159 | //------------------------------------------------------------------------- |
---|
1160 | Mesh *TextureConserver::GetMesh() |
---|
1161 | { |
---|
1162 | return mGeoMesh; |
---|
1163 | } |
---|
1164 | |
---|