1 | #include "PlyConverter.h"
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2 | #include "SimpleTri.h"
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3 | #include "SimpleVec.h"
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4 | #include "gzstream.h"
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5 | #include <iostream>
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6 | #include "rply.h"
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7 |
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8 |
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9 | using namespace std;
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10 |
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11 | static int sGlobalIndex = 0;
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12 |
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13 |
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14 | VertexArray sVertices;
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15 | VertexArray sNormals;
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16 | FaceArray sFaces;
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17 |
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18 |
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19 |
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20 | PlyConverter::~PlyConverter()
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21 | {
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22 | for (size_t i = 0; i < mGeometry.size(); ++ i) delete mGeometry[i];
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23 | mGeometry.clear();
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24 | }
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25 |
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26 |
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27 | void PlyConverter::LoadShape(const VertexArray &vertices,
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28 | const VertexArray &normals,
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29 | const TexcoordArray &texcoords,
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30 | const FaceArray &faces
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31 | )
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32 | {
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33 | Geometry *geom = new Geometry();
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34 | size_t idx = 0;
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35 |
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36 | for (size_t i = 0; i < faces.size(); ++ i)
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37 | {
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38 | if (i % 1000 == 0)
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39 | cout << "converted " << i << " lines" << endl;
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40 |
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41 | Face face = faces[i];
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42 |
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43 | if (faces[i].indices.empty()) cout << "error!!" << endl;
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44 |
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45 | //cout << "size: " << face.indices.size() << endl;
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46 | for (int j = (int)face.indices.size() - 1; j >= 0; -- j)
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47 | {
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48 | //cout << "h " << j << " " << face.indices.size() << endl;
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49 |
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50 | SimpleVec h = vertices[face.indices[j]];
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51 | SimpleVec v;
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52 |
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53 | v.x = -h.x * 14;
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54 | v.y = h.z * 14;
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55 | v.z = h.y * 14;
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56 |
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57 | geom->mVertices.push_back(v);
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58 |
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59 | /*if (!normals.empty())
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60 | {
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61 | for (int j = 0; j < 3; ++ j)
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62 | faceNormals.push_back(Normalize(normals[nIndices[idx[j]]]));
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63 | }
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64 | else
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65 | {
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66 | // no face normals? => create normals
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67 | const SimpleTri tri(vertices[indices[idx[0]]],
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68 | vertices[indices[idx[1]]],
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69 | vertices[indices[idx[2]]]);
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70 |
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71 | const SimpleVec n = tri.GetNormal();
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72 |
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73 | faceNormals.push_back(n);
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74 | faceNormals.push_back(n);
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75 | faceNormals.push_back(n);
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76 | }*/
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77 | }
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78 |
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79 | //cout << "idx: " << idx << " " << geom->mVertices.size() << endl;
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80 |
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81 | // no face normals? => create normals
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82 | const SimpleTri tri(geom->mVertices[idx + 0],
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83 | geom->mVertices[idx + 1],
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84 | geom->mVertices[idx + 2]);
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85 |
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86 | const SimpleVec n = tri.GetNormal();
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87 |
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88 | geom->mNormals.push_back(n);
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89 | geom->mNormals.push_back(n);
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90 | geom->mNormals.push_back(n);
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91 |
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92 | idx += faces[i].indices.size();
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93 | }
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94 |
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95 | mGeometry.push_back(geom);
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96 | mNumShapes = 1;
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97 | }
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98 |
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99 |
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100 | bool PlyConverter::Convert(const string &filename,
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101 | const std::string &outputFilename)
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102 | {
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103 | mNumShapes = 0;
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104 |
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105 | for (size_t i = 0; i < mGeometry.size(); ++ i) delete mGeometry[i];
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106 | mGeometry.clear();
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107 |
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108 | if (!ReadFile(filename))
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109 | {
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110 | cerr << "could not read file" << endl;
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111 | return false;
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112 | }
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113 |
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114 | if (!WriteFile(outputFilename))
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115 | {
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116 | cerr << "could not write file" << endl;
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117 | return false;
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118 | }
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119 |
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120 | return true;
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121 | }
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122 |
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123 |
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124 | static int vertex_cb(p_ply_argument argument)
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125 | {
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126 | long eol;
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127 | ply_get_argument_user_data(argument, NULL, &eol);
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128 |
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129 | static SimpleVec v;
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130 | static int i = 0;
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131 |
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132 | v[i ++] = (float)ply_get_argument_value(argument);
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133 | //printf("%g", ply_get_argument_value(argument));
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134 |
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135 | if (eol)
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136 | {
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137 | sVertices.push_back(v);
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138 | if (sVertices.size() % 10000 == 0) cout << "read in " << sVertices.size() << " vertices" << endl;
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139 | i = 0;
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140 | }
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141 |
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142 | return 1;
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143 | }
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144 |
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145 |
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146 | static int face_cb(p_ply_argument argument)
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147 | {
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148 | long length, value_index;
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149 | ply_get_argument_property(argument, NULL, &length, &value_index);
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150 |
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151 | static Face face;
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152 |
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153 | switch (value_index)
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154 | {
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155 | case 0:
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156 | case 1:
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157 | //printf("here4 %g ", ply_get_argument_value(argument));
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158 | face.indices.push_back((int)ply_get_argument_value(argument));
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159 | break;
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160 | case 2:
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161 | //printf("here5 %g\n", ply_get_argument_value(argument));
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162 | face.indices.push_back((int)ply_get_argument_value(argument));
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163 | sFaces.push_back(face);
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164 | if (sFaces.size() % 10000 == 0) cout << "read in " << sFaces.size() << " faces" << endl;
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165 |
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166 | face.indices.clear();
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167 | break;
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168 | default:
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169 | break;
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170 | }
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171 |
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172 |
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173 | return 1;
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174 | }
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175 |
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176 |
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177 |
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178 | bool PlyConverter::ReadFile(const string &filename)
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179 | {
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180 | long nvertices, ntriangles;
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181 |
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182 | p_ply ply = ply_open(filename.c_str(), NULL);
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183 |
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184 | if (!ply) return 1;
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185 | if (!ply_read_header(ply)) return 1;
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186 |
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187 | nvertices = ply_set_read_cb(ply, "vertex", "x", vertex_cb, NULL, 0);
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188 |
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189 | ply_set_read_cb(ply, "vertex", "y", vertex_cb, NULL, 0);
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190 | ply_set_read_cb(ply, "vertex", "z", vertex_cb, NULL, 1);
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191 |
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192 | ntriangles = ply_set_read_cb(ply, "face", "vertex_indices", face_cb, NULL, 0);
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193 |
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194 | cout << "vertices: " << nvertices << endl;
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195 | cout << "triangles: " << ntriangles << endl;
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196 |
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197 | if (!ply_read(ply)) return false;
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198 | ply_close(ply);
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199 |
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200 | TexcoordArray texCoords;
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201 | LoadShape(sVertices, sNormals, texCoords, sFaces);
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202 |
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203 | return true;
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204 | }
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205 |
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206 |
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207 |
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208 | void PlyConverter::WriteGeometry(ogzstream &str, Geometry *geom)
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209 | {
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210 | size_t vertexCount = (int)geom->mVertices.size();
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211 | str.write(reinterpret_cast<char *>(&vertexCount), sizeof(int));
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212 |
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213 | cout << "writing geometry" << endl;
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214 |
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215 | //SimpleVec vertices = new SimpleVec[vertexCount];
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216 | //for (size_t i = 0; i < vertexCount; ++ i) vertices[i] = geom->mVertices[i];
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217 | //for (size_t i = 0; i < vertexCount; ++ i) vertices[i] = geom->mNormals[i];
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218 |
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219 | for (size_t i = 0; i < vertexCount; ++ i)
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220 | str.write(reinterpret_cast<char *>(&geom->mVertices[i]), sizeof(SimpleVec));
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221 |
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222 | for (size_t i = 0; i < vertexCount; ++ i)
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223 | str.write(reinterpret_cast<char *>(&geom->mNormals[i]), sizeof(SimpleVec));
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224 |
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225 | cout << "finished writing geometry" << endl;
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226 | //if (texCoordCount) str.write(reinterpret_cast<char *>(geom->mTexcoords), sizeof(float) * texCoordCount * 2);
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227 |
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228 | int texCoordCount = 0;
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229 | str.write(reinterpret_cast<char *>(&texCoordCount), sizeof(int));
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230 |
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231 | //if (texCoordCount) str.write(reinterpret_cast<char *>(geom->mTexcoords), sizeof(float) * texCoordCount * 2);
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232 | }
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233 |
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234 |
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235 | bool PlyConverter::WriteFile(const string &filename)
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236 | {
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237 | ogzstream ofile(filename.c_str());
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238 | if (!ofile.is_open()) return false;
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239 |
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240 |
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241 | mNumShapes = (int)mGeometry.size();
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242 |
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243 | /////////
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244 | //-- write textures
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245 |
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246 | #ifdef USE_TEXTURE
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247 | int textureCount = 1;
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248 | #else
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249 | int textureCount = 0;
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250 | #endif
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251 | ofile.write(reinterpret_cast<char *>(&textureCount), sizeof(int));
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252 |
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253 | if (textureCount > 0)
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254 | {
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255 | // hack
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256 | const string texName("wood.jpg");
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257 |
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258 | int texnameSize = (int)texName.length() + 1;
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259 | ofile.write(reinterpret_cast<char *>(&texnameSize), sizeof(int));
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260 |
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261 | ofile.write(texName.c_str(), sizeof(char) * texnameSize);
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262 |
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263 | int boundS = 1, boundT = 1;
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264 |
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265 | ofile.write(reinterpret_cast<char *>(&boundS), sizeof(int));
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266 | ofile.write(reinterpret_cast<char *>(&boundT), sizeof(int));
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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 | //-- write shapes
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272 |
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273 | ofile.write(reinterpret_cast<char *>(&mNumShapes), sizeof(int));
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274 |
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275 | vector<Geometry *>::const_iterator it, it_end = mGeometry.end();
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276 |
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277 | for (it = mGeometry.begin(); it != it_end; ++ it)
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278 | {
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279 | WriteGeometry(ofile, *it);
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280 |
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281 |
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282 | ///////
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283 | //-- texture
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284 |
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285 | int texId = 0;
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286 | ofile.write(reinterpret_cast<char *>(&texId), sizeof(int));
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287 |
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288 | bool alphaTestEnabled = false;
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289 | //bool cullFaceEnabled = false;
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290 | bool cullFaceEnabled = true;
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291 |
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292 | ofile.write(reinterpret_cast<char *>(&alphaTestEnabled), sizeof(bool));
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293 | ofile.write(reinterpret_cast<char *>(&cullFaceEnabled), sizeof(bool));
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294 |
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295 | // material
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296 | bool hasMaterial = false;
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297 | ofile.write(reinterpret_cast<char *>(&hasMaterial), sizeof(bool));
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298 | }
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299 |
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300 |
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301 | int entityCount = 1;
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302 | ofile.write(reinterpret_cast<char *>(&entityCount), sizeof(int));
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303 |
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304 |
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305 | //////////
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306 | //-- write single scene entity
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307 |
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308 | // no transformation
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309 | bool hasTrafo = false;
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310 | ofile.write(reinterpret_cast<char *>(&hasTrafo), sizeof(bool));
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311 |
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312 | // a dummy lod
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313 | int numLODs = 1;
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314 | ofile.write(reinterpret_cast<char *>(&numLODs), sizeof(int));
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315 |
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316 | float dist = 0;
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317 | ofile.write(reinterpret_cast<char *>(&dist), sizeof(float));
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318 | ofile.write(reinterpret_cast<char *>(&mNumShapes), sizeof(int));
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319 |
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320 |
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321 | // all shapes belong to this scene entity
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322 | for (int i = 0; i < mNumShapes; ++ i)
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323 | {
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324 | int shapeId = i;
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325 | ofile.write(reinterpret_cast<char *>(&shapeId), sizeof(int));
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326 | }
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327 |
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328 | return true;
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329 | }
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