1 | // |
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2 | // iv2ply.cc |
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3 | // Written by Sean Anderson. |
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4 | // February 1999. |
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5 | // |
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6 | // Brian Curless' original code at the bottom, ifdef out. |
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7 | // Brian's code was not general enough; it didn't work on nearly all |
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8 | // Inventor files, but this code should. |
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9 | // |
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10 | |
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11 | #include <assert.h> |
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12 | #include <stdio.h> |
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13 | |
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14 | #include <Inventor/SoDB.h> |
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15 | #include <Inventor/nodes/SoSeparator.h> |
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16 | #include <Inventor/SoPrimitiveVertex.h> |
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17 | #include <Inventor/details/SoFaceDetail.h> |
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18 | #include <Inventor/details/SoPointDetail.h> |
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19 | #include <Inventor/actions/SoCallbackAction.h> |
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20 | |
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21 | #include <vector.h> // STL |
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22 | |
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23 | |
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24 | struct TriangleFace |
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25 | { |
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26 | TriangleFace() |
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27 | { |
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28 | data[0] = 3; // 3 indices follow, since we have a triangle |
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29 | } |
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30 | |
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31 | void set(const int v, const int coordindex) |
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32 | { |
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33 | memcpy(data + 1 + v * sizeof(int), &coordindex, sizeof(int)); |
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34 | } |
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35 | |
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36 | int get(const int v) const |
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37 | { |
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38 | int coordindex; |
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39 | memcpy(&coordindex, data + 1 + v * sizeof(int), sizeof(int)); |
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40 | return coordindex; |
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41 | } |
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42 | |
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43 | // uchar int int int |
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44 | unsigned char data[sizeof(unsigned char) + 3 * sizeof(int)]; |
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45 | }; |
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46 | |
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47 | |
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48 | // When we do a traversal of the scene graph, we put the newly |
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49 | // found vertices and triangles into an instance of CallbackInfo, |
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50 | // so that successive calls of the callback function can return |
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51 | // what they find and see what has been found so far. |
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52 | class CallbackInfo |
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53 | { |
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54 | public: |
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55 | CallbackInfo() |
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56 | { |
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57 | currentCoord3 = NULL; |
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58 | binary = true; |
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59 | |
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60 | cba.addTriangleCallback(SoNode::getClassTypeId(), |
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61 | &CallbackInfo::triangleCallback, |
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62 | this); |
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63 | } |
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64 | |
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65 | ~CallbackInfo() |
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66 | { |
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67 | } |
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68 | |
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69 | |
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70 | bool apply(SoNode * node) |
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71 | { |
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72 | if (node == NULL) |
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73 | { |
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74 | return true; |
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75 | } |
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76 | |
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77 | cba.apply(node); |
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78 | return false; |
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79 | } |
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80 | |
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81 | bool write(FILE * out) |
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82 | { |
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83 | fprintf(out, |
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84 | "ply\n" |
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85 | "format %s 1.0\n" |
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86 | "element vertex %d\n" |
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87 | "property float x\n" |
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88 | "property float y\n" |
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89 | "property float z\n" |
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90 | "element face %d\n" |
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91 | "property list uchar int vertex_indices\n" |
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92 | "end_header\n", |
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93 | binary ? "binary_big_endian" : "ascii", |
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94 | coords.size(), |
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95 | indices.size()); |
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96 | |
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97 | if (binary) |
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98 | { |
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99 | int numWritten; |
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100 | numWritten = fwrite(coords.begin(), |
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101 | sizeof(*coords.begin()), coords.size(), |
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102 | out); |
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103 | if (numWritten != coords.size()) |
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104 | { |
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105 | fprintf(stderr, "error writing ply file\n"); |
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106 | return true; |
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107 | } |
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108 | |
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109 | numWritten = fwrite(indices.begin(), |
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110 | sizeof(*indices.begin()), indices.size(), |
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111 | out); |
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112 | if (numWritten != indices.size()) |
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113 | { |
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114 | fprintf(stderr, "error writing ply file\n"); |
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115 | return true; |
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116 | } |
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117 | } |
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118 | else // ascii |
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119 | { |
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120 | for (vector<SbVec3f>::iterator i = coords.begin(); |
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121 | i != coords.end(); |
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122 | i++) |
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123 | { |
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124 | if (0 > fprintf(out, "%g %g %g\n", (*i)[0], (*i)[1], (*i)[2])) |
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125 | { |
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126 | fprintf(stderr, "error writing ply file\n"); |
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127 | return true; |
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128 | } |
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129 | } |
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130 | |
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131 | for (vector<TriangleFace>::iterator j = indices.begin(); |
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132 | j != indices.end(); |
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133 | j++) |
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134 | { |
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135 | if (0 > fprintf(out, "3 %d %d %d\n", |
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136 | (*j).get(0), (*j).get(1), (*j).get(2))) |
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137 | { |
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138 | fprintf(stderr, "error writing ply file\n"); |
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139 | return true; |
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140 | } |
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141 | } |
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142 | |
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143 | } |
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144 | |
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145 | return false; |
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146 | } |
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147 | |
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148 | static void triangleCallback(void * userData, |
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149 | SoCallbackAction * action, |
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150 | const SoPrimitiveVertex * v1, |
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151 | const SoPrimitiveVertex * v2, |
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152 | const SoPrimitiveVertex * v3) |
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153 | |
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154 | { |
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155 | assert(userData); |
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156 | ((CallbackInfo *) userData)->triangleCallback(action, v1, v2, v3); |
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157 | } |
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158 | |
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159 | void triangleCallback(SoCallbackAction * action, |
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160 | const SoPrimitiveVertex * v1, |
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161 | const SoPrimitiveVertex * v2, |
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162 | const SoPrimitiveVertex * v3); |
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163 | |
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164 | SoCallbackAction cba; |
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165 | |
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166 | bool binary; |
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167 | |
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168 | vector<SbVec3f> coords; |
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169 | vector<TriangleFace> indices; |
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170 | const SbVec3f * currentCoord3; |
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171 | |
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172 | }; |
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173 | |
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174 | void |
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175 | CallbackInfo::triangleCallback(SoCallbackAction * action, |
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176 | const SoPrimitiveVertex * v1, |
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177 | const SoPrimitiveVertex * v2, |
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178 | const SoPrimitiveVertex * v3) |
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179 | { |
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180 | const SbVec3f * newCurrentCoord3 = (action->getNumCoordinates() > 0) ? |
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181 | &action->getCoordinate3(0) : NULL; |
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182 | |
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183 | if (newCurrentCoord3 != currentCoord3) |
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184 | { |
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185 | currentCoord3 = newCurrentCoord3; |
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186 | if (currentCoord3) |
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187 | { |
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188 | SbMatrix m = action->getModelMatrix(); |
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189 | SbVec3f p; |
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190 | |
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191 | const int n = action->getNumCoordinates(); |
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192 | for (int i = 0; i < n; i++) |
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193 | { |
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194 | m.multVecMatrix(currentCoord3[i], p); |
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195 | coords.push_back(p); |
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196 | } |
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197 | } |
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198 | } |
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199 | |
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200 | |
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201 | const SoFaceDetail * facedetail = |
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202 | dynamic_cast<const SoFaceDetail *>(v1->getDetail()); |
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203 | |
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204 | TriangleFace f; |
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205 | |
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206 | if (currentCoord3 && facedetail) |
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207 | { |
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208 | for (int i = 0; i < 3; i++) |
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209 | { |
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210 | const SoPointDetail * pointdetail = facedetail->getPoint(i); |
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211 | assert(pointdetail); |
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212 | |
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213 | int index = pointdetail->getCoordinateIndex(); |
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214 | |
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215 | int k; |
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216 | if (currentCoord3[index] == v1->getPoint()) |
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217 | { |
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218 | k = 0; |
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219 | } |
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220 | else if (currentCoord3[index] == v2->getPoint()) |
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221 | { |
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222 | k = 1; |
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223 | } |
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224 | else |
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225 | { |
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226 | assert(currentCoord3[index] == v3->getPoint()); |
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227 | k = 2; |
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228 | } |
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229 | f.set(k, index + coords.size() - action->getNumCoordinates()); |
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230 | } |
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231 | } |
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232 | else |
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233 | { |
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234 | SbMatrix m = action->getModelMatrix(); |
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235 | SbVec3f p; |
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236 | |
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237 | f.set(0, coords.size()); |
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238 | m.multVecMatrix(v1->getPoint(), p); |
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239 | coords.push_back(p); |
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240 | |
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241 | f.set(1, coords.size()); |
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242 | m.multVecMatrix(v2->getPoint(), p); |
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243 | coords.push_back(p); |
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244 | |
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245 | f.set(2, coords.size()); |
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246 | m.multVecMatrix(v3->getPoint(), p); |
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247 | coords.push_back(p); |
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248 | } |
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249 | |
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250 | indices.push_back(f); |
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251 | } |
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252 | |
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253 | |
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254 | // Returns false on success. |
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255 | bool |
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256 | iv2ply(SoNode * node, FILE * plyoutput, bool binary) |
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257 | { |
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258 | CallbackInfo cbi; |
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259 | |
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260 | cbi.binary = binary; |
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261 | |
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262 | return cbi.apply(node) || cbi.write(plyoutput); |
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263 | } |
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264 | |
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265 | |
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266 | #if 0 |
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267 | // We could paste the following into a header called iv2ply.h and |
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268 | // change the above 0 to a 1 to use iv2ply as a function in a larger program. |
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269 | |
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270 | |
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271 | // -- start of iv2ply.h |
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272 | #ifndef iv2ply_h |
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273 | #define iv2ply_h |
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274 | |
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275 | #include <stdio.h> |
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276 | #include <Inventor/nodes/SoGroup.h> |
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277 | |
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278 | bool iv2ply(SoNode * node, FILE * plyoutput, bool binary = true); |
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279 | |
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280 | #endif |
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281 | // -- end of iv2ply.h |
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282 | |
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283 | |
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284 | #else // use as stand alone program. |
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285 | |
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286 | void |
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287 | printUsage(const char * name) |
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288 | { |
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289 | fprintf(stderr, |
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290 | "Usage:\n%s -h | [-a] [(- | infile.iv) [outfile.ply]]\n" |
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291 | "Where:\n" |
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292 | " -a write ascii ply file instead of binary\n" |
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293 | " - read Inventor scene graph from standard input\n" |
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294 | " infile.iv is the name of the Inventor input file\n" |
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295 | " outfile.ply is the name of the plyfile output\n" |
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296 | " (use standard out otherwise).\n", name); |
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297 | } |
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298 | |
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299 | int |
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300 | main(int argc, char * argv[]) |
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301 | { |
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302 | bool binary = true; |
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303 | char * inputname = NULL; |
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304 | char * outputname = NULL; |
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305 | |
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306 | for (int c = 1; c < argc; c++) |
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307 | { |
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308 | if (!strcmp(argv[c], "-h")) |
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309 | { |
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310 | printUsage(argv[0]); |
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311 | return 1; |
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312 | } |
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313 | else if (!strcmp(argv[c], "-a")) |
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314 | { |
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315 | binary = false; |
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316 | } |
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317 | else if (!inputname) |
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318 | { |
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319 | inputname = argv[c]; |
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320 | } |
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321 | else if (!outputname) |
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322 | { |
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323 | outputname = argv[c]; |
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324 | } |
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325 | } |
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326 | |
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327 | SoDB::init(); |
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328 | |
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329 | SoInput in; |
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330 | if (inputname && strcmp(inputname, "-")) |
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331 | { |
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332 | if (!in.openFile(inputname)) |
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333 | { |
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334 | printUsage(argv[0]); |
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335 | return 1; |
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336 | } |
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337 | } |
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338 | SoSeparator * root = SoDB::readAll(&in); |
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339 | if (root == NULL) |
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340 | { |
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341 | fprintf(stderr, "Error reading inventor file\n"); |
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342 | printUsage(argv[0]); |
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343 | return 1; |
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344 | } |
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345 | |
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346 | root->ref(); |
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347 | |
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348 | FILE * out = stdout; |
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349 | if (outputname) |
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350 | { |
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351 | out = fopen(outputname, "w"); |
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352 | if (!out) |
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353 | { |
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354 | fprintf(stderr, "Error opening ply file '%s' for writing.\n", |
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355 | outputname); |
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356 | printUsage(argv[0]); |
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357 | return 1; |
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358 | } |
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359 | } |
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360 | |
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361 | bool r = iv2ply(root, out, binary); |
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362 | |
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363 | root->unref(); |
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364 | |
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365 | return r; |
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366 | } |
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367 | |
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368 | #endif |
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369 | |
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370 | |
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371 | |
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372 | |
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373 | |
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374 | #if 0 |
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375 | |
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376 | // |
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377 | // Brian L. Curless |
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378 | // Stanford University |
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379 | // August 1997 |
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380 | // |
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381 | |
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382 | |
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383 | // This program is a quick fix for doing some Inventor to ply conversions. |
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384 | // Known problems include: the shapes must be under a single group node, |
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385 | // and normals are not handled carefully. |
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386 | // This program should be generalized to use scene graph traversal. |
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387 | |
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388 | #include <stdio.h> |
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389 | #include <Inventor/So.h> |
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390 | #include <ply.h> |
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391 | #include <stdlib.h> |
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392 | #include <strings.h> |
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393 | #include <iostream.h> |
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394 | |
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395 | #define MAX_VERT_PROPS 20 |
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396 | |
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397 | typedef unsigned char uchar; |
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398 | typedef float Normal[3]; |
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399 | |
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400 | struct Vertex { |
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401 | float x, y, z; |
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402 | float nx, ny, nz; |
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403 | uchar diff_r, diff_g, diff_b; |
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404 | float intensity; |
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405 | float std_dev; |
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406 | }; |
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407 | |
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408 | struct Face { |
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409 | uchar nverts; |
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410 | int *verts; |
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411 | }; |
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412 | |
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413 | struct FaceNorms { |
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414 | uchar nnorms; |
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415 | int *norms; |
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416 | }; |
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417 | |
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418 | |
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419 | |
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420 | static PlyProperty vert_prop_x = |
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421 | {"x", PLY_FLOAT, PLY_FLOAT, 0, 0, PLY_START_TYPE, PLY_START_TYPE, 0}; |
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422 | static PlyProperty vert_prop_y = |
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423 | {"y", PLY_FLOAT, PLY_FLOAT, 0, 0, PLY_START_TYPE, PLY_START_TYPE, 0}; |
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424 | static PlyProperty vert_prop_z = |
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425 | {"z", PLY_FLOAT, PLY_FLOAT, 0, 0, PLY_START_TYPE, PLY_START_TYPE, 0}; |
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426 | static PlyProperty vert_prop_nx = |
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427 | {"nx", PLY_FLOAT, PLY_FLOAT, 0, 0, PLY_START_TYPE, PLY_START_TYPE, 0}; |
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428 | static PlyProperty vert_prop_ny = |
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429 | {"ny", PLY_FLOAT, PLY_FLOAT, 0, 0, PLY_START_TYPE, PLY_START_TYPE, 0}; |
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430 | static PlyProperty vert_prop_nz = |
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431 | {"nz", PLY_FLOAT, PLY_FLOAT, 0, 0, PLY_START_TYPE, PLY_START_TYPE, 0}; |
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432 | static PlyProperty vert_prop_intens = |
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433 | {"intensity", PLY_FLOAT, PLY_FLOAT, 0, 0, PLY_START_TYPE, PLY_START_TYPE, 0}; |
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434 | static PlyProperty vert_prop_std_dev = |
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435 | {"std_dev", PLY_FLOAT, PLY_FLOAT, 0, 0, PLY_START_TYPE, PLY_START_TYPE, 0}; |
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436 | static PlyProperty vert_prop_diff_r = |
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437 | {"diffuse_red", PLY_UCHAR, PLY_UCHAR, 0, 0, PLY_START_TYPE, PLY_START_TYPE, 0}; |
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438 | static PlyProperty vert_prop_diff_g = |
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439 | {"diffuse_green", PLY_UCHAR, PLY_UCHAR, 0, 0, PLY_START_TYPE, PLY_START_TYPE, 0}; |
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440 | static PlyProperty vert_prop_diff_b = |
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441 | {"diffuse_blue", PLY_UCHAR, PLY_UCHAR, 0, 0, PLY_START_TYPE, PLY_START_TYPE, 0}; |
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442 | |
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443 | static PlyProperty vert_props[MAX_VERT_PROPS]; |
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444 | |
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445 | |
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446 | static PlyProperty face_props[] = { |
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447 | {"vertex_indices", PLY_INT, PLY_INT, 0, 1, PLY_UCHAR, PLY_UCHAR, 0}, |
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448 | }; |
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449 | |
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450 | |
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451 | /* dummy variables and associated macros for computing field offsets */ |
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452 | |
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453 | Vertex *vert_dummy; |
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454 | #define voffset(field) ((char *) (&vert_dummy->field) - (char *) vert_dummy) |
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455 | Face *face_dummy; |
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456 | #define foffset(field) ((char *) (&face_dummy->field) - (char *) face_dummy) |
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457 | |
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458 | |
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459 | static int DIFFUSE_COLORS; |
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460 | static int INTENSITIES; |
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461 | static int FOUND_NORMALS; |
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462 | |
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463 | // Function definitions |
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464 | int readInventorFile(FILE *inFile, Vertex **pVerts, Face **pFaces, |
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465 | int *pNumVerts, int *pNumFaces); |
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466 | int writePlyFile(FILE *outFile, Vertex *verts, Face *faces, |
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467 | int numVerts, int numFaces); |
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468 | void printUsage(); |
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469 | |
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470 | |
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471 | void |
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472 | main(int argc, char**argv) |
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473 | { |
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474 | Vertex *verts = NULL; |
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475 | Face *faces = NULL; |
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476 | int numVerts, numFaces, i; |
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477 | |
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478 | char *ivName = NULL; |
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479 | FILE *ivIn = NULL; |
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480 | |
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481 | |
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482 | // Process input parameters |
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483 | if (argc == 1) { |
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484 | // No args, use stdin |
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485 | ivIn = stdin; |
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486 | } else if (argc == 2 && argv[1][0] != '-') { |
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487 | // 1 arg, doesn't begin with "-", use as input iv file |
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488 | ivName = argv[1]; |
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489 | ivIn = fopen(ivName, "r"); |
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490 | if (ivIn == NULL) { |
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491 | fprintf(stderr, "Error: Cannot open input Inventor file %s\n", ivName); |
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492 | printUsage(); |
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493 | exit(-1); |
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494 | } |
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495 | } else { |
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496 | printUsage(); |
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497 | exit(-1); |
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498 | } |
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499 | |
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500 | readInventorFile(ivIn, &verts, &faces, &numVerts, &numFaces); |
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501 | |
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502 | if (verts == NULL) { |
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503 | fprintf(stderr, "Obtained no vertices.\n"); |
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504 | exit(1); |
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505 | } |
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506 | |
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507 | writePlyFile(stdout, verts, faces, numVerts, numFaces); |
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508 | |
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509 | exit(0); |
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510 | } |
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511 | |
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512 | |
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513 | int |
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514 | readInventorFile(FILE *inFile, Vertex **pVerts, Face **pFaces, |
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515 | int *pNumVerts, int *pNumFaces) |
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516 | { |
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517 | int i, j, k; |
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518 | |
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519 | // Initialize Inventor |
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520 | SoDB::init(); |
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521 | |
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522 | SoInput in; |
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523 | |
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524 | // Set input file to read from |
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525 | in.setFilePointer(inFile); |
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526 | |
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527 | SoNode *node; |
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528 | SbBool ok; |
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529 | ok = SoDB::read(&in, node); |
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530 | if (!ok || node == NULL) |
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531 | return 0; |
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532 | |
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533 | Vertex *verts = NULL; |
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534 | Normal *norms = NULL; |
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535 | Face *faces = NULL; |
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536 | FaceNorms *faceNorms = NULL; |
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537 | int numFaceNorms; |
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538 | SoSFEnum binding; |
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539 | |
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540 | SoGroup *group = (SoGroup *)node; |
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541 | for (i = 0; i < group->getNumChildren(); i++) { |
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542 | if (group->getChild(i)-> |
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543 | isOfType(SoIndexedFaceSet::getClassTypeId())) { |
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544 | |
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545 | SoMFInt32 &coordIndices = |
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546 | ((SoIndexedFaceSet *)group->getChild(i))->coordIndex; |
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547 | int numIndices = coordIndices.getNum(); |
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548 | *pNumFaces = 0; |
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549 | for (j = 0; j < numIndices; j++) { |
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550 | if (coordIndices[j] == -1) |
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551 | *pNumFaces = *pNumFaces + 1; |
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552 | } |
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553 | faces = *pFaces = new Face[*pNumFaces]; |
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554 | int curFaceIndex = 0; |
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555 | uchar curVerts = 0; |
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556 | for (j = 0; j < numIndices; j++) { |
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557 | if (coordIndices[j] == -1) { |
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558 | faces[curFaceIndex].nverts = curVerts; |
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559 | faces[curFaceIndex].verts = new int[curVerts]; |
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560 | for (k = 0; k < curVerts; k++) { |
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561 | faces[curFaceIndex].verts[k] = coordIndices[k+j-curVerts]; |
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562 | } |
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563 | curFaceIndex++; |
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564 | curVerts = 0; |
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565 | } else { |
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566 | curVerts++; |
---|
567 | } |
---|
568 | } |
---|
569 | |
---|
570 | SoMFInt32 &normIndices = |
---|
571 | ((SoIndexedFaceSet *)group->getChild(i))->normalIndex; |
---|
572 | numIndices = normIndices.getNum(); |
---|
573 | if (numIndices == 1 && normIndices[0] == -1) { |
---|
574 | continue; |
---|
575 | } |
---|
576 | numFaceNorms = 0; |
---|
577 | for (j = 0; j < numIndices; j++) { |
---|
578 | if (normIndices[j] == -1) |
---|
579 | numFaceNorms++; |
---|
580 | } |
---|
581 | faceNorms = new FaceNorms[numFaceNorms]; |
---|
582 | curFaceIndex = 0; |
---|
583 | curVerts = 0; |
---|
584 | for (j = 0; j < numIndices; j++) { |
---|
585 | if (normIndices[j] == -1) { |
---|
586 | faceNorms[curFaceIndex].nnorms = curVerts; |
---|
587 | faceNorms[curFaceIndex].norms = new int[curVerts]; |
---|
588 | for (k = 0; k < curVerts; k++) { |
---|
589 | faceNorms[curFaceIndex].norms[k] = |
---|
590 | normIndices[k+j-curVerts]; |
---|
591 | } |
---|
592 | curFaceIndex++; |
---|
593 | curVerts = 0; |
---|
594 | } else { |
---|
595 | curVerts++; |
---|
596 | } |
---|
597 | } |
---|
598 | |
---|
599 | } |
---|
600 | else if (group->getChild(i)-> |
---|
601 | isOfType(SoCoordinate3::getClassTypeId())) { |
---|
602 | SoMFVec3f &points = ((SoCoordinate3 *)group->getChild(i))->point; |
---|
603 | if (verts == NULL) { |
---|
604 | *pNumVerts = points.getNum(); |
---|
605 | verts = *pVerts = new Vertex[*pNumVerts]; |
---|
606 | } |
---|
607 | for (j = 0; j < *pNumVerts; j++) { |
---|
608 | const float *vec = points[j].getValue(); |
---|
609 | verts[j].x = vec[0]; |
---|
610 | verts[j].y = vec[1]; |
---|
611 | verts[j].z = vec[2]; |
---|
612 | } |
---|
613 | } |
---|
614 | |
---|
615 | else if (group->getChild(i)-> |
---|
616 | isOfType(SoNormal::getClassTypeId())) { |
---|
617 | SoMFVec3f &normals = ((SoNormal *)group->getChild(i))->vector; |
---|
618 | FOUND_NORMALS = TRUE; |
---|
619 | int numNorms = normals.getNum(); |
---|
620 | norms = new Normal[numNorms]; |
---|
621 | for (j = 0; j < numNorms; j++) { |
---|
622 | const float *vec = normals[j].getValue(); |
---|
623 | norms[j][0] = vec[0]; |
---|
624 | norms[j][1] = vec[1]; |
---|
625 | norms[j][2] = vec[2]; |
---|
626 | } |
---|
627 | } |
---|
628 | else if (group->getChild(i)-> |
---|
629 | isOfType(SoNormalBinding::getClassTypeId())) { |
---|
630 | binding = ((SoNormalBinding *)group->getChild(i))->value; |
---|
631 | } |
---|
632 | } |
---|
633 | |
---|
634 | if (FOUND_NORMALS && (binding.getValue() == SoNormalBinding::PER_VERTEX_INDEXED)) { |
---|
635 | if (faceNorms == NULL) { |
---|
636 | for (j = 0; j < *pNumVerts; j++) { |
---|
637 | verts[j].nx = norms[j][0]; |
---|
638 | verts[j].ny = norms[j][1]; |
---|
639 | verts[j].nz = norms[j][2]; |
---|
640 | } |
---|
641 | } |
---|
642 | else { |
---|
643 | for (j = 0; j < numFaceNorms; j++) { |
---|
644 | for (k = 0; k < faceNorms[j].nnorms; k++) { |
---|
645 | verts[faces[j].verts[k]].nx = norms[faceNorms[j].norms[k]][0]; |
---|
646 | verts[faces[j].verts[k]].ny = norms[faceNorms[j].norms[k]][1]; |
---|
647 | verts[faces[j].verts[k]].nz = norms[faceNorms[j].norms[k]][2]; |
---|
648 | } |
---|
649 | } |
---|
650 | } |
---|
651 | } |
---|
652 | else { |
---|
653 | FOUND_NORMALS = FALSE; |
---|
654 | } |
---|
655 | |
---|
656 | return 1; |
---|
657 | } |
---|
658 | |
---|
659 | |
---|
660 | int |
---|
661 | writePlyFile(FILE *outFile, Vertex *verts, Face *faces, |
---|
662 | int numVerts, int numFaces) |
---|
663 | { |
---|
664 | int i, j; |
---|
665 | int nelems; |
---|
666 | char **elist; |
---|
667 | int file_type; |
---|
668 | float version; |
---|
669 | char *elem_name; |
---|
670 | int nprops, num_vert_props; |
---|
671 | int num_elems; |
---|
672 | PlyProperty **plist; |
---|
673 | int nvp; |
---|
674 | char *elem_names[] = {"vertex", "face"}; |
---|
675 | |
---|
676 | PlyFile *ply = ply_write (stdout, 2, elem_names, PLY_BINARY_BE); |
---|
677 | |
---|
678 | if (ply == NULL) { |
---|
679 | fprintf(stderr, "Error, couldn't write output.\n"); |
---|
680 | exit(-1); |
---|
681 | } |
---|
682 | |
---|
683 | nvp = 0; |
---|
684 | |
---|
685 | vert_props[nvp] = vert_prop_x; |
---|
686 | vert_props[nvp].offset = offsetof(Vertex,x); nvp++; |
---|
687 | vert_props[nvp] = vert_prop_y; |
---|
688 | vert_props[nvp].offset = offsetof(Vertex,y); nvp++; |
---|
689 | vert_props[nvp] = vert_prop_z; |
---|
690 | vert_props[nvp].offset = offsetof(Vertex,z); nvp++; |
---|
691 | |
---|
692 | if (FOUND_NORMALS) { |
---|
693 | vert_props[nvp] = vert_prop_nx; |
---|
694 | vert_props[nvp].offset = offsetof(Vertex,nx); nvp++; |
---|
695 | vert_props[nvp] = vert_prop_ny; |
---|
696 | vert_props[nvp].offset = offsetof(Vertex,ny); nvp++; |
---|
697 | vert_props[nvp] = vert_prop_nz; |
---|
698 | vert_props[nvp].offset = offsetof(Vertex,nz); nvp++; |
---|
699 | } |
---|
700 | |
---|
701 | num_vert_props = nvp; |
---|
702 | |
---|
703 | face_props[0].offset = offsetof(Face, verts); |
---|
704 | face_props[0].count_offset = offsetof(Face, nverts); /* count offset */ |
---|
705 | |
---|
706 | ply_describe_element (ply, "vertex", numVerts, |
---|
707 | num_vert_props, vert_props); |
---|
708 | |
---|
709 | ply_describe_element (ply, "face", numFaces, 1, face_props); |
---|
710 | |
---|
711 | ply_header_complete (ply); |
---|
712 | |
---|
713 | /* set up and write the vertex elements */ |
---|
714 | |
---|
715 | ply_put_element_setup (ply, "vertex"); |
---|
716 | |
---|
717 | for (i = 0; i < numVerts; i++) { |
---|
718 | ply_put_element (ply, (void *) &verts[i]); |
---|
719 | } |
---|
720 | |
---|
721 | int vertIndices[3]; |
---|
722 | |
---|
723 | ply_put_element_setup (ply, "face"); |
---|
724 | |
---|
725 | for (i = 0; i < numFaces; i++) { |
---|
726 | ply_put_element (ply, (void *) &faces[i]); |
---|
727 | } |
---|
728 | |
---|
729 | return 1; |
---|
730 | } |
---|
731 | |
---|
732 | |
---|
733 | void |
---|
734 | printUsage() |
---|
735 | { |
---|
736 | printf("\n"); |
---|
737 | printf("Usage: iv2ply [in.ply] > out.ply\n"); |
---|
738 | printf(" or: iv2ply < in.ply > out.ply\n"); |
---|
739 | printf("\n"); |
---|
740 | printf(" Iv2ply converts an Inventor file containing a Group node\n"); |
---|
741 | printf(" above a Coordinate3 and IndexedFaceSet node into a ply file.\n"); |
---|
742 | printf(" Normals are preserved, but not color, etc.\n"); |
---|
743 | printf("\n"); |
---|
744 | exit(-1); |
---|
745 | } |
---|
746 | |
---|
747 | #endif |
---|