1 | #include "BinaryLoader.h"
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2 | #include "Matrix4x4.h"
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3 | #include "Geometry.h"
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4 | #include "SceneEntity.h"
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5 | #include "Material.h"
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6 | #include "Texture.h"
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7 | //#include "gzstream.h"
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8 |
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9 |
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10 | using namespace std;
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11 |
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12 |
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13 | namespace CHCDemoEngine
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14 | {
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15 |
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16 |
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17 | BinaryLoader::~BinaryLoader()
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18 | {
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19 | /** delete all maps.
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20 | */
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21 | std::map<int, Texture *>::iterator it, it_end = mTextureTable.end();
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22 |
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23 | for (it = mTextureTable.begin(); it != it_end; ++ it)
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24 | {
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25 | Texture *tex = (*it).second;
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26 | delete tex;
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27 | }
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28 |
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29 | std::map<int, Material *>::iterator nit, nit_end = mMaterialTable.end();
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30 |
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31 | for (nit = mMaterialTable.begin(); nit != nit_end; ++ nit)
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32 | {
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33 | Material *mat = (*nit).second;
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34 | delete mat;
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35 | }
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36 |
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37 |
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38 | std::map<int, Geometry *>::iterator git, git_end = mGeometryTable.end();
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39 |
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40 | for (git = mGeometryTable.begin(); git != git_end; ++git)
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41 | {
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42 | Geometry *geom = (*git).second;
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43 | delete geom;
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44 | }
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45 | }
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46 |
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47 | //SceneEntity *BinaryLoader::LoadSceneEntity(igzstream &str)
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48 | SceneEntity *BinaryLoader::LoadSceneEntity(ifstream &str)
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49 | {
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50 | // shape
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51 | int shapeId;
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52 | str.read(reinterpret_cast<char *>(&shapeId), sizeof(int));
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53 |
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54 | Geometry *geom = mGeometryTable[shapeId];
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55 | Material *mat = mMaterialTable[shapeId];
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56 |
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57 |
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58 | bool hasTrafo;
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59 | str.read(reinterpret_cast<char *>(&hasTrafo), sizeof(bool));
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60 |
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61 | Matrix4x4 *trafo;
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62 |
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63 | if (!hasTrafo)
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64 | {
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65 | trafo = NULL;
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66 | }
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67 | else
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68 | {
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69 | trafo = new Matrix4x4();
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70 | str.read(reinterpret_cast<char *>(trafo->x), sizeof(Matrix4x4));
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71 | }
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72 |
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73 | SceneEntity *sceneGeom = new SceneEntity(geom, mat, trafo);
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74 |
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75 | return sceneGeom;
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76 | }
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77 |
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78 |
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79 | void BinaryLoader::LoadTextures(ifstream &str)
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80 | {
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81 | int numTextures;
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82 | str.read(reinterpret_cast<char *>(&numTextures), sizeof(int));
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83 |
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84 | for (int i = 0; i < numTextures; ++ i)
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85 | {
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86 | // texture
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87 | int texnameSize;
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88 |
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89 | //str.read(reinterpret_cast<char *>(&id), sizeof(int));
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90 | str.read(reinterpret_cast<char *>(&texnameSize), sizeof(int));
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91 |
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92 | char *texname = new char[texnameSize];
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93 | str.read(texname, sizeof(char) * texnameSize);
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94 |
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95 | //cout << "loading texture " << texname << " with len " << texnameSize << " id: " << id << endl;
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96 | Texture *tex = new Texture(model_path + texname);
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97 |
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98 | mTextureTable[i] = tex;
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99 | }
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100 |
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101 | cout << "loaded " << mTextureTable.size() << " textures" << endl;
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102 | }
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103 |
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104 |
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105 | void BinaryLoader::LoadShapes(ifstream &str)
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106 | {
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107 | int numShapes;
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108 | str.read(reinterpret_cast<char *>(&numShapes), sizeof(int));
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109 |
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110 | for (int i = 0; i < numShapes; ++ i)
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111 | {
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112 | Geometry *geom = LoadGeometry(str);
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113 | Material *mat = LoadMaterial(str);
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114 |
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115 | mGeometryTable[i] = geom;
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116 | mMaterialTable[i] = mat;
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117 | }
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118 |
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119 | cout << "loaded " << mGeometryTable.size() << " shapes" << endl;
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120 | }
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121 |
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122 |
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123 | //Appearance *BinaryLoader::LoadMaterial(igzstream &str)
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124 | Material *BinaryLoader::LoadMaterial(ifstream &str)
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125 | {
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126 | // default material
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127 | Material *mat = new Material();
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128 |
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129 | // texture
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130 | int texId;
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131 | str.read(reinterpret_cast<char *>(&texId), sizeof(int));
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132 |
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133 | if (texId >= 0)
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134 | mat->SetTexture(mTextureTable[texId]);
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135 |
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136 | str.read(reinterpret_cast<char *>(&mat->mAlphaTestEnabled), sizeof(bool));
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137 |
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138 | // material
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139 | bool hasMaterial;
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140 | str.read(reinterpret_cast<char *>(&hasMaterial), sizeof(bool));
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141 |
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142 | if (hasMaterial)
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143 | {
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144 | // only write rgb part of the material
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145 | str.read(reinterpret_cast<char *>(&mat->mAmbientColor), sizeof(Vector3));
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146 | str.read(reinterpret_cast<char *>(&mat->mDiffuseColor), sizeof(Vector3));
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147 | str.read(reinterpret_cast<char *>(&mat->mSpecularColor), sizeof(Vector3));
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148 | }
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149 |
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150 | return mat;
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151 | }
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152 |
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153 |
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154 | //Geometry *BinaryLoader::LoadGeometry(igzstream &str)
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155 | Geometry *BinaryLoader::LoadGeometry(ifstream &str)
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156 | {
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157 | Vector3 *vertices;
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158 | Vector3 *normals;
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159 | float *texcoords;
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160 |
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161 |
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162 | //////////////
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163 | //-- read in vertices
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164 |
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165 | int vertexCount;
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166 | str.read(reinterpret_cast<char *>(&vertexCount), sizeof(int));
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167 |
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168 | // end of file reached
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169 | if (str.eof())
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170 | return NULL;
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171 |
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172 | //cout << "vertexcount: " << vertexCount << endl;
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173 |
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174 | vertices = new Vector3[vertexCount];
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175 | str.read(reinterpret_cast<char *>(vertices), sizeof(Vector3) * vertexCount);
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176 |
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177 | normals = new Vector3[vertexCount];
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178 | str.read(reinterpret_cast<char *>(normals), sizeof(Vector3) * vertexCount);
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179 |
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180 | int texCoordCount;
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181 | str.read(reinterpret_cast<char *>(&texCoordCount), sizeof(int));
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182 |
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183 | if (texCoordCount)
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184 | {
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185 | //cout << "loading texcoords of size " << texCoordCount << endl;
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186 | texcoords = new float[texCoordCount * 2];
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187 | str.read(reinterpret_cast<char *>(texcoords), sizeof(float) * vertexCount * 2);
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188 | }
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189 | else
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190 | texcoords = NULL;
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191 |
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192 | return new Geometry(vertices, normals, texcoords, vertexCount, true);
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193 | }
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194 |
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195 |
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196 | void BinaryLoader::LoadSceneEntities(ifstream &str, SceneEntityContainer &entities)
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197 | {
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198 | int entityCount;
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199 | str.read(reinterpret_cast<char *>(&entityCount), sizeof(int));
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200 |
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201 | entities.resize(entityCount);
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202 |
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203 | for (int i = 0; i < entityCount; ++ i)
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204 | {
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205 | SceneEntity *ent = LoadSceneEntity(str);
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206 | entities[i] = ent;
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207 | }
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208 |
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209 | cout << "loaded " << entityCount << " scene entities" << endl;
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210 | }
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211 |
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212 |
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213 | bool BinaryLoader::Load(const std::string &filename, SceneEntityContainer &entities)
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214 | {
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215 | //clear_textures(); // clear the texture table
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216 |
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217 | //igzstream str(filename.c_str());//, ios::binary);
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218 | ifstream istr(filename.c_str(), ios::binary);
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219 |
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220 | if (!istr.is_open())
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221 | return false;
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222 |
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223 | cout << "loading textures" << endl;
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224 |
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225 | // load the texture table
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226 | LoadTextures(istr);
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227 |
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228 | cout << "loading shapes (geometry + materials)" << endl;
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229 |
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230 | // load the shapees
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231 | LoadShapes(istr);
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232 |
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233 | cout << "loading scene entites" << endl;
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234 | LoadSceneEntities(istr, entities);
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235 |
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236 | cout << "bin loading finished" << endl;
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237 |
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238 | return true;
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239 | }
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240 |
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241 | }
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