1 | #include "VboFormatConverter.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 |
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7 |
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8 | using namespace std;
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9 |
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10 |
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11 | VboFormatConverter::VboFormatConverter()
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12 | {}
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13 |
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14 |
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15 | VboFormatConverter::~VboFormatConverter()
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16 | {
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17 | for (size_t i = 0; i < mGeometry.size(); ++ i)
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18 | {
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19 | delete [] mGeometry[i]->mVertices;
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20 | delete [] mGeometry[i]->mNormals;
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21 | delete [] mGeometry[i]->mTangents;
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22 | delete [] mGeometry[i]->mTexcoords;
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23 |
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24 | delete mGeometry[i];
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25 | }
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26 |
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27 | mGeometry.clear();
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28 | }
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29 |
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30 |
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31 | bool VboFormatConverter::Convert(const string &filename,
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32 | const std::string &outputFilename)
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33 | {
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34 | mNumShapes = 0;
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35 |
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36 | for (size_t i = 0; i < mGeometry.size(); ++ i)
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37 | {
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38 | delete [] mGeometry[i]->mVertices;
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39 | delete [] mGeometry[i]->mNormals;
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40 | delete [] mGeometry[i]->mTexcoords;
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41 |
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42 | delete mGeometry[i];
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43 | }
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44 |
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45 | mGeometry.clear();
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46 |
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47 | if (!ReadFile(filename))
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48 | {
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49 | cerr << "could not read file" << endl;
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50 | return false;
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51 | }
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52 |
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53 | if (!WriteFile(outputFilename))
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54 | {
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55 | cerr << "could not write file" << endl;
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56 | return false;
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57 | }
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58 |
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59 |
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60 | return true;
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61 | }
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62 |
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63 |
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64 | bool VboFormatConverter::ReadFile(const string &filename)
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65 | {
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66 | FILE *file;
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67 | if ((file = fopen(filename.c_str(), "r")) == NULL) return false;
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68 |
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69 | int line = 0;
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70 |
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71 | const int len = 10000;
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72 | char str[len];
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73 |
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74 | int numElements;
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75 |
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76 | // first line only holds number of vertices
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77 | fgets(str, len, file);
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78 | sscanf(str, "%d", &numElements);
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79 |
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80 | Geometry *geom = new Geometry();
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81 |
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82 | // convert the triangles to geometry
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83 | geom->mVertexCount = numElements;
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84 | geom->mVertices = new SimpleVec[numElements];
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85 | geom->mNormals = new SimpleVec[numElements];
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86 | geom->mTangents = new SimpleVec[numElements];
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87 | geom->mTexcoords = new Texcoord[numElements];
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88 |
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89 | SimpleVec vtx, normal, tangent;
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90 | Texcoord tex;
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91 |
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92 | cout << "elements: " << numElements << endl;
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93 | while (fgets(str, len, file) != NULL)
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94 | {
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95 | sscanf(str, "%f %f %f %f %f %f %f %f %f %f %f",
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96 | &vtx.x, &vtx.z, &vtx.y,
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97 | &normal.x, &normal.z, &normal.y,
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98 | &tex.first, &tex.second,
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99 | &tangent.x, &tangent.y, &tangent.z);
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100 |
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101 | const float scale = 0.05f;
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102 | vtx.x *= scale;
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103 | vtx.y *= scale;
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104 | vtx.z *= scale;
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105 |
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106 | geom->mVertices[line] = vtx;
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107 | geom->mNormals[line] = normal;
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108 | geom->mTexcoords[line] = tex;
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109 | geom->mTangents[line] = tangent;
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110 |
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111 | ++ line;
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112 | }
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113 |
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114 | mGeometry.push_back(geom);
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115 |
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116 | mNumShapes = 1;
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117 | fclose(file);
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118 |
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119 | return true;
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120 | }
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121 |
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122 |
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123 | void VboFormatConverter::WriteGeometry(ogzstream &str, Geometry *geom)
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124 | {
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125 | int vertexCount = geom->mVertexCount;
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126 | str.write(reinterpret_cast<char *>(&vertexCount), sizeof(int));
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127 |
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128 | str.write(reinterpret_cast<char *>(geom->mVertices), sizeof(SimpleVec) * vertexCount);
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129 | str.write(reinterpret_cast<char *>(geom->mNormals), sizeof(SimpleVec) * vertexCount);
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130 | str.write(reinterpret_cast<char *>(geom->mTangents), sizeof(SimpleVec) * vertexCount);
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131 |
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132 | int texCoordCount = geom->mTexcoordCount;
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133 | str.write(reinterpret_cast<char *>(&texCoordCount), sizeof(int));
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134 |
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135 | if (texCoordCount)
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136 | str.write(reinterpret_cast<char *>(geom->mTexcoords), sizeof(float) * texCoordCount * 2);
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137 |
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138 |
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139 | ///////
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140 | //-- texture
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141 |
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142 | //int texId = -1;
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143 | int texId = 0;
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144 |
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145 | str.write(reinterpret_cast<char *>(&texId), sizeof(int));
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146 | //str.write(reinterpret_cast<char *>(&texId2), sizeof(int));
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147 |
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148 | bool alphaTestEnabled = false;
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149 | //bool cullFaceEnabled = false;
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150 | bool cullFaceEnabled = true;
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151 |
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152 | str.write(reinterpret_cast<char *>(&alphaTestEnabled), sizeof(bool));
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153 | str.write(reinterpret_cast<char *>(&cullFaceEnabled), sizeof(bool));
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154 |
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155 | // material
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156 | bool hasMaterial = true;
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157 | //bool hasMaterial = false;
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158 | str.write(reinterpret_cast<char *>(&hasMaterial), sizeof(bool));
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159 |
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160 | if (hasMaterial)
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161 | {
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162 | SimpleVec ambient, diffuse, spec, emm;
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163 |
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164 | ambient.x = ambient.y = ambient.z = 0.2f;
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165 | diffuse.x = diffuse.y = diffuse.z = 1.0f;
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166 | spec.x = spec.y = spec.z = .0f;
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167 | emm = spec;
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168 |
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169 | // only write rgb part of the material
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170 | str.write(reinterpret_cast<char *>(&ambient), sizeof(SimpleVec));
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171 | str.write(reinterpret_cast<char *>(&diffuse), sizeof(SimpleVec));
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172 | str.write(reinterpret_cast<char *>(&spec), sizeof(SimpleVec));
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173 | str.write(reinterpret_cast<char *>(&emm), sizeof(SimpleVec));
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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 VboFormatConverter::WriteFile(const string &filename)
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179 | {
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180 | ogzstream ofile(filename.c_str());
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181 |
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182 | if (!ofile.is_open())
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183 | return false;
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184 |
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185 |
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186 | /////////
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187 | //-- write textures
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188 |
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189 | int textureCount = 1;
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190 | //int textureCount = 0;
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191 |
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192 | ofile.write(reinterpret_cast<char *>(&textureCount), sizeof(int));
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193 |
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194 | if (textureCount > 0)
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195 | {
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196 | // hack
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197 | const string texName("fischi_u1_v1.png");
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198 | //const string texName("wood.jpg");
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199 |
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200 | int texnameSize = (int)texName.length() + 1;
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201 | ofile.write(reinterpret_cast<char *>(&texnameSize), sizeof(int));
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202 |
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203 | ofile.write(texName.c_str(), sizeof(char) * texnameSize);
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204 |
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205 | int boundS = 1, boundT = 1;
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206 |
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207 | ofile.write(reinterpret_cast<char *>(&boundS), sizeof(int));
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208 | ofile.write(reinterpret_cast<char *>(&boundT), sizeof(int));
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209 | }
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210 |
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211 |
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212 | ///////////
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213 | //-- write shapes
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214 |
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215 | ofile.write(reinterpret_cast<char *>(&mNumShapes), sizeof(int));
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216 |
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217 | vector<Geometry *>::const_iterator it, it_end = mGeometry.end();
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218 |
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219 | for (it = mGeometry.begin(); it != it_end; ++ it)
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220 | {
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221 | WriteGeometry(ofile, *it);
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222 | }
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223 |
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224 |
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225 | int entityCount = 1;
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226 | ofile.write(reinterpret_cast<char *>(&entityCount), sizeof(int));
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227 |
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228 |
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229 | //////////
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230 | //-- write single scene entity
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231 |
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232 | // no transformation
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233 | bool hasTrafo = false;
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234 | ofile.write(reinterpret_cast<char *>(&hasTrafo), sizeof(bool));
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235 |
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236 | // a dummy lod
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237 | int numLODs = 1;
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238 | ofile.write(reinterpret_cast<char *>(&numLODs), sizeof(int));
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239 |
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240 | float dist = 0;
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241 | ofile.write(reinterpret_cast<char *>(&dist), sizeof(float));
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242 |
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243 | ofile.write(reinterpret_cast<char *>(&mNumShapes), sizeof(int));
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244 |
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245 | // all shapes belong to this scene entity
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246 | for (int i = 0; i < mNumShapes; ++ i)
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247 | {
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248 | int shapeId = i;
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249 | ofile.write(reinterpret_cast<char *>(&shapeId), sizeof(int));
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250 | }
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251 |
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252 | return true;
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253 | } |
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