1 | /* |
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2 | orxonox - the future of 3D-vertical-scrollers |
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3 | |
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4 | Copyright (C) 2004 orx |
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5 | |
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6 | This program is free software; you can redistribute it and/or modify |
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7 | it under the terms of the GNU General Public License as published by |
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8 | the Free Software Foundation; either version 2, or (at your option) |
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9 | any later version. |
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10 | |
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11 | ### File Specific: |
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12 | main-programmer: Benjamin Grauer |
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13 | co-programmer: ... |
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14 | */ |
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15 | |
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16 | #include "object.h" |
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17 | |
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18 | /** |
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19 | \brief Creates a 3D-Object, but does not load any 3D-models |
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20 | pretty useless |
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21 | */ |
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22 | Object::Object () |
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23 | { |
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24 | |
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25 | initialize(); |
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26 | |
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27 | BoxObject(); |
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28 | |
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29 | finalize(); |
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30 | } |
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31 | |
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32 | /** |
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33 | \brief Crates a 3D-Object and loads in a File |
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34 | \param fileName file to parse and load (must be a .obj file) |
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35 | */ |
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36 | Object::Object(char* fileName) |
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37 | { |
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38 | initialize(); |
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39 | |
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40 | importFile (fileName); |
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41 | |
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42 | finalize(); |
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43 | } |
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44 | |
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45 | /** |
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46 | \brief Crates a 3D-Object, loads in a File and scales it. |
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47 | \param fileName file to parse and load (must be a .obj file) |
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48 | \param scaling The factor that the object will be scaled with. |
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49 | */ |
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50 | |
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51 | Object::Object(char* fileName, float scaling) |
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52 | { |
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53 | initialize(); |
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54 | scaleFactor = scaling; |
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55 | |
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56 | importFile (fileName); |
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57 | |
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58 | finalize(); |
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59 | } |
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60 | |
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61 | /** |
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62 | \brief deletes an Object |
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63 | */ |
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64 | Object::~Object() |
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65 | { |
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66 | if (verbose >= 2) |
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67 | printf ("Don't know what to delete, or how to destroy a glList\n"); |
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68 | |
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69 | } |
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70 | |
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71 | /** |
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72 | \brief initializes the Object |
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73 | This Function initializes all the needed arrays, Lists and clientStates |
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74 | */ |
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75 | bool Object::initialize (void) |
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76 | { |
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77 | if (verbose >=3) |
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78 | printf("new 3D-Object is being created\n"); |
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79 | faceMode = -1; |
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80 | if ( (listNumber = glGenLists(1)) == 0 ) |
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81 | { |
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82 | printf ("list could not be created for this Object\n"); |
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83 | return false; |
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84 | } |
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85 | |
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86 | mtlFileName = ""; |
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87 | scaleFactor = 1; |
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88 | vertices = new Array(); |
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89 | normals = new Array(); |
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90 | vTexture = new Array(); |
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91 | |
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92 | material = new Material(); |
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93 | |
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94 | glNewList (listNumber, GL_COMPILE); |
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95 | glEnableClientState (GL_VERTEX_ARRAY); |
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96 | glEnableClientState (GL_NORMAL_ARRAY); |
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97 | // glEnableClientState (GL_TEXTURE_COORD_ARRAY); |
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98 | |
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99 | return true; |
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100 | } |
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101 | |
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102 | /** |
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103 | \brief Imports a obj file and handles the the relative location |
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104 | \param fileName The file to import |
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105 | */ |
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106 | bool Object::importFile (char* fileName) |
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107 | { |
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108 | if (verbose >=3) |
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109 | printf("preparing to read in file: %s\n", fileName); |
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110 | objFileName = fileName; |
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111 | this->readFromObjFile (objFileName); |
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112 | return true; |
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113 | } |
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114 | |
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115 | /** |
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116 | \brief finalizes an Object. |
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117 | This funcion is needed, to close the glList and all the other lists. |
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118 | */ |
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119 | bool Object::finalize(void) |
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120 | { |
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121 | if (verbose >=3) |
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122 | printf("finalizing the 3D-Object\n"); |
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123 | glEnd(); |
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124 | glEndList(); |
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125 | delete vertices; |
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126 | delete normals; |
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127 | delete vTexture; |
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128 | if (material != NULL) |
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129 | delete material; |
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130 | return true; |
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131 | } |
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132 | |
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133 | /** |
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134 | \brief Draws the Object |
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135 | It does this by just calling the List that must have been created earlier. |
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136 | */ |
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137 | void Object::draw (void) |
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138 | { |
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139 | if (verbose >=3) |
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140 | printf("drawing the 3D-Object\n"); |
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141 | glCallList (listNumber); |
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142 | } |
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143 | |
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144 | /** |
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145 | \brief Reads in the .obj File and sets all the Values. |
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146 | This function does read the file, parses it for the occurence of things like vertices, faces and so on, and executes the specific tasks |
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147 | \param fileName the File that will be parsed (.obj-file) |
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148 | */ |
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149 | bool Object::readFromObjFile (char* fileName) |
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150 | { |
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151 | OBJ_FILE = new ifstream(fileName); |
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152 | if (!OBJ_FILE->is_open()) |
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153 | { |
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154 | if (verbose >=1) |
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155 | printf ("unable to open .OBJ file: %s\n Loading Box Object instead.\n", fileName); |
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156 | BoxObject(); |
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157 | return false; |
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158 | } |
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159 | objFileName = fileName; |
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160 | char Buffer[500]; |
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161 | while(!OBJ_FILE->eof()) |
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162 | { |
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163 | OBJ_FILE->getline(Buffer, 500); |
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164 | if (verbose >=4) |
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165 | printf ("Read input line: %s\n",Buffer); |
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166 | |
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167 | |
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168 | // case vertice |
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169 | if (!strncmp(Buffer, "v ", 2)) |
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170 | { |
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171 | readVertex(Buffer+2); |
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172 | } |
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173 | |
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174 | // case face |
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175 | else if (!strncmp(Buffer, "f ", 2)) |
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176 | { |
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177 | readFace (Buffer+2); |
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178 | } |
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179 | |
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180 | else if (!strncmp(Buffer, "mtllib", 6)) |
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181 | { |
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182 | readMtlLib (Buffer+7); |
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183 | } |
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184 | |
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185 | else if (!strncmp(Buffer, "usemtl", 6)) |
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186 | { |
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187 | readUseMtl (Buffer+7); |
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188 | } |
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189 | |
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190 | // case VertexNormal |
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191 | else if (!strncmp(Buffer, "vn ", 2)) |
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192 | { |
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193 | readVertexNormal(Buffer+3); |
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194 | } |
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195 | |
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196 | // case VertexTextureCoordinate |
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197 | else if (!strncmp(Buffer, "vt ", 2)) |
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198 | { |
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199 | readVertexTexture(Buffer+3); |
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200 | } |
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201 | // case group |
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202 | else if (!strncmp(Buffer, "g", 1)) |
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203 | { |
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204 | printf("ERROR GROUPS NOT IMPLEMENTED YET\n"); |
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205 | } |
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206 | } |
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207 | OBJ_FILE->close(); |
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208 | |
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209 | } |
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210 | |
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211 | /** |
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212 | \brief parses a vertex-String |
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213 | If a vertex line is found this function will inject it into the vertex-Array |
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214 | \param vertexString The String that will be parsed. |
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215 | */ |
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216 | bool Object::readVertex (char* vertexString) |
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217 | { |
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218 | readVertices = true; |
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219 | char subbuffer1[20]; |
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220 | char subbuffer2[20]; |
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221 | char subbuffer3[20]; |
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222 | sscanf (vertexString, "%s %s %s", subbuffer1, subbuffer2, subbuffer3); |
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223 | if (verbose >= 3) |
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224 | printf ("reading in a vertex: %s %s %s\n", subbuffer1, subbuffer2, subbuffer3); |
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225 | vertices->addEntry(atof(subbuffer1)*scaleFactor, atof(subbuffer2)*scaleFactor, atof(subbuffer3)*scaleFactor); |
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226 | return true; |
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227 | } |
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228 | |
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229 | /** |
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230 | \brief parses a face-string |
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231 | If a face line is found this function will add it to the glList. |
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232 | The function makes a difference between QUADS and TRIANGLES, and will if changed re-open, set and re-close the gl-processe. |
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233 | \param faceString The String that will be parsed. |
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234 | */ |
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235 | bool Object::readFace (char* faceString) |
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236 | { |
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237 | if (readVertices == true) |
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238 | { |
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239 | vertices->finalizeArray(); |
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240 | glVertexPointer(3, GL_FLOAT, 0, vertices->getArray()); |
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241 | normals->finalizeArray(); |
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242 | glNormalPointer(GL_FLOAT, 0, normals->getArray()); |
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243 | vTexture->finalizeArray(); |
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244 | } |
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245 | |
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246 | readVertices = false; |
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247 | char subbuffer1[20]; |
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248 | char subbuffer2[20]; |
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249 | char subbuffer3[20]; |
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250 | char subbuffer4[20] =""; |
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251 | sscanf (faceString, "%s %s %s %s", subbuffer1, subbuffer2, subbuffer3, subbuffer4); |
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252 | if (!strcmp(subbuffer4, "")) |
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253 | { |
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254 | if (faceMode != 3) |
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255 | { |
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256 | if (faceMode != -1) |
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257 | glEnd(); |
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258 | glBegin(GL_TRIANGLES); |
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259 | } |
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260 | |
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261 | faceMode = 3; |
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262 | if (verbose >=3) |
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263 | printf ("found triag: %s, %s, %s\n", subbuffer1, subbuffer2, subbuffer3); |
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264 | addGLElement(subbuffer1); |
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265 | addGLElement(subbuffer2); |
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266 | addGLElement(subbuffer3); |
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267 | return true; |
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268 | } |
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269 | else |
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270 | { |
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271 | if (faceMode != 4) |
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272 | { |
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273 | if (faceMode != -1) |
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274 | glEnd(); |
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275 | glBegin(GL_QUADS); |
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276 | } |
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277 | faceMode = 4; |
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278 | if (verbose >=3 ) |
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279 | printf ("found quad: %s, %s, %s, %s\n", subbuffer1, subbuffer2, subbuffer3, subbuffer4); |
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280 | addGLElement(subbuffer1); |
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281 | addGLElement(subbuffer2); |
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282 | addGLElement(subbuffer3); |
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283 | addGLElement(subbuffer4); |
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284 | return true; |
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285 | } |
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286 | } |
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287 | |
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288 | /** |
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289 | \brief Adds a Face-element (one vertex of a face) with all its information. |
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290 | It does this by searching: |
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291 | 1. The Vertex itself |
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292 | 2. The VertexNormale |
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293 | 3. The VertexTextureCoordinate |
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294 | merging this information, the face will be drawn. |
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295 | |
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296 | */ |
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297 | bool Object::addGLElement (char* elementString) |
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298 | { |
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299 | if (verbose >=3) |
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300 | printf ("importing grafical Element.... including to openGL\n"); |
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301 | char* vertex = elementString; |
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302 | |
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303 | char* texture; |
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304 | texture = strstr (vertex, "/"); |
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305 | texture[0] = '\0'; |
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306 | texture ++; |
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307 | glTexCoord2fv(vTexture->getArray()+(atoi(texture)-1)*2); |
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308 | |
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309 | char* normal; |
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310 | if ((normal = strstr (texture, "/")) !=NULL) |
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311 | { |
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312 | normal[0] = '\0'; |
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313 | normal ++; |
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314 | //glArrayElement(atoi(vertex)-1); |
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315 | glNormal3fv(normals->getArray() +(atoi(normal)-1)*3); |
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316 | } |
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317 | glVertex3fv(vertices->getArray() +(atoi(vertex)-1)*3); |
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318 | |
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319 | } |
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320 | |
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321 | /** |
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322 | \brief parses a vertexNormal-String |
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323 | If a vertexNormal line is found this function will inject it into the vertexNormal-Array |
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324 | \param normalString The String that will be parsed. |
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325 | */ |
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326 | bool Object::readVertexNormal (char* normalString) |
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327 | { |
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328 | readVertices = true; |
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329 | char subbuffer1[20]; |
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330 | char subbuffer2[20]; |
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331 | char subbuffer3[20]; |
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332 | sscanf (normalString, "%s %s %s", subbuffer1, subbuffer2, subbuffer3); |
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333 | if (verbose >=3 ) |
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334 | printf("found vertex-Normal %s, %s, %s\n", subbuffer1,subbuffer2,subbuffer3); |
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335 | normals->addEntry(atof(subbuffer1), atof(subbuffer2), atof(subbuffer3)); |
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336 | return true; |
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337 | } |
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338 | |
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339 | /** |
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340 | \brief parses a vertexTextureCoordinate-String |
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341 | If a vertexTextureCoordinate line is found this function will inject it into the vertexTexture-Array |
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342 | \param vTextureString The String that will be parsed. |
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343 | */ |
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344 | bool Object::readVertexTexture (char* vTextureString) |
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345 | { |
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346 | readVertices = true; |
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347 | char subbuffer1[20]; |
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348 | char subbuffer2[20]; |
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349 | sscanf (vTextureString, "%s %s", subbuffer1, subbuffer2); |
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350 | if (verbose >=3 ) |
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351 | printf("found vertex-Texture %s, %s\n", subbuffer1,subbuffer2); |
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352 | vTexture->addEntry(atof(subbuffer1)); |
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353 | vTexture->addEntry(atof(subbuffer2)); |
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354 | return true; |
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355 | } |
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356 | |
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357 | /** |
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358 | \brief Function to read in a mtl File. |
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359 | this Function parses all Lines of an mtl File |
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360 | \param mtlFile The .mtl file to read |
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361 | */ |
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362 | bool Object::readMtlLib (char* mtlFile) |
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363 | { |
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364 | MTL_FILE = new ifstream (mtlFile); |
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365 | if (!MTL_FILE->is_open()) |
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366 | { |
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367 | if (verbose >= 1) |
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368 | printf ("unable to open file: %s\n", mtlFile); |
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369 | return false; |
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370 | } |
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371 | mtlFileName = mtlFile; |
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372 | if (verbose >=2) |
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373 | printf ("Opening mtlFile: %s\n", mtlFileName); |
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374 | char Buffer[500]; |
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375 | Material* tmpMat = material; |
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376 | while(!MTL_FILE->eof()) |
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377 | { |
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378 | MTL_FILE->getline(Buffer, 500); |
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379 | if (verbose >= 4) |
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380 | printf("found line in mtlFile: %s\n", Buffer); |
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381 | |
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382 | |
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383 | // create new Material |
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384 | if (!strncmp(Buffer, "newmtl ", 2)) |
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385 | { |
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386 | tmpMat = tmpMat->addMaterial(Buffer+7); |
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387 | // printf ("%s, %p\n", tmpMat->getName(), tmpMat); |
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388 | } |
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389 | // setting a illumMode |
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390 | else if (!strncmp(Buffer, "illum", 5)) |
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391 | { |
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392 | tmpMat->setIllum(Buffer+6); |
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393 | |
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394 | } |
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395 | // setting Diffuse Color |
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396 | else if (!strncmp(Buffer, "Kd", 2)) |
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397 | { |
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398 | tmpMat->setDiffuse(Buffer+3); |
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399 | } |
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400 | // setting Ambient Color |
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401 | else if (!strncmp(Buffer, "Ka", 2)) |
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402 | { |
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403 | tmpMat->setAmbient(Buffer+3); |
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404 | } |
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405 | // setting Specular Color |
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406 | else if (!strncmp(Buffer, "Ks", 2)) |
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407 | { |
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408 | tmpMat->setSpecular(Buffer+3); |
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409 | } |
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410 | // setting The Specular Shininess |
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411 | else if (!strncmp(Buffer, "Ns", 2)) |
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412 | { |
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413 | tmpMat->setShininess(Buffer+3); |
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414 | } |
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415 | // setting up transparency |
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416 | else if (!strncmp(Buffer, "d", 1)) |
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417 | { |
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418 | tmpMat->setTransparency(Buffer+2); |
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419 | } |
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420 | else if (!strncpy(Buffer, "Tf", 2)) |
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421 | { |
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422 | tmpMat->setTransparency(Buffer+3); |
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423 | } |
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424 | |
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425 | } |
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426 | return true; |
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427 | } |
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428 | |
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429 | /** |
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430 | \brief Function that selects a material, if changed in the obj file. |
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431 | \param matString the Material that will be set. |
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432 | */ |
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433 | |
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434 | bool Object::readUseMtl (char* matString) |
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435 | { |
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436 | if (!strcmp (mtlFileName, "")) |
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437 | { |
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438 | if (verbose >= 1) |
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439 | printf ("Not using new defined material, because no mtlFile found yet\n"); |
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440 | return false; |
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441 | } |
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442 | |
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443 | if (faceMode != -1) |
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444 | glEnd(); |
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445 | faceMode = 0; |
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446 | if (verbose >= 2) |
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447 | printf ("using material %s for coming Faces.\n", matString); |
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448 | material->search(matString)->select(); |
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449 | } |
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450 | |
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451 | /** |
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452 | \brief Includes a default object |
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453 | This will inject a Cube, because this is the most basic object. |
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454 | */ |
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455 | void Object::BoxObject(void) |
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456 | { |
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457 | readVertex ("-0.500000 -0.500000 0.500000"); |
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458 | readVertex ("0.500000 -0.500000 0.500000"); |
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459 | readVertex ("-0.500000 0.500000 0.500000"); |
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460 | readVertex ("0.500000 0.500000 0.500000"); |
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461 | readVertex ("-0.500000 0.500000 -0.500000"); |
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462 | readVertex ("0.500000 0.500000 -0.500000"); |
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463 | readVertex ("-0.500000 -0.500000 -0.500000"); |
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464 | readVertex ("0.500000 -0.500000 -0.500000"); |
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465 | readVertexTexture ("0.000000 0.000000"); |
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466 | readVertexTexture ("1.000000 0.000000"); |
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467 | readVertexTexture ("0.000000 1.000000"); |
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468 | readVertexTexture ("1.000000 1.000000"); |
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469 | readVertexTexture ("0.000000 2.000000"); |
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470 | readVertexTexture ("1.000000 2.000000"); |
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471 | readVertexTexture ("0.000000 3.000000"); |
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472 | readVertexTexture ("1.000000 3.000000"); |
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473 | readVertexTexture ("0.000000 4.000000"); |
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474 | readVertexTexture ("1.000000 4.000000"); |
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475 | readVertexTexture ("2.000000 0.000000"); |
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476 | readVertexTexture ("2.000000 1.000000"); |
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477 | readVertexTexture ("-1.000000 0.000000"); |
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478 | readVertexTexture ("-1.000000 1.000000"); |
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479 | |
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480 | readVertexNormal ("0.000000 0.000000 1.000000"); |
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481 | readVertexNormal ("0.000000 0.000000 1.000000"); |
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482 | readVertexNormal ("0.000000 0.000000 1.000000"); |
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483 | readVertexNormal ("0.000000 0.000000 1.000000"); |
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484 | readVertexNormal ("0.000000 1.000000 0.000000"); |
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485 | readVertexNormal ("0.000000 1.000000 0.000000"); |
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486 | readVertexNormal ("0.000000 1.000000 0.000000"); |
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487 | readVertexNormal ("0.000000 1.000000 0.000000"); |
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488 | readVertexNormal ("0.000000 0.000000 -1.000000"); |
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489 | readVertexNormal ("0.000000 0.000000 -1.000000"); |
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490 | readVertexNormal ("0.000000 0.000000 -1.000000"); |
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491 | readVertexNormal ("0.000000 0.000000 -1.000000"); |
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492 | readVertexNormal ("0.000000 -1.000000 0.000000"); |
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493 | readVertexNormal ("0.000000 -1.000000 0.000000"); |
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494 | readVertexNormal ("0.000000 -1.000000 0.000000"); |
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495 | readVertexNormal ("0.000000 -1.000000 0.000000"); |
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496 | readVertexNormal ("1.000000 0.000000 0.000000"); |
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497 | readVertexNormal ("1.000000 0.000000 0.000000"); |
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498 | readVertexNormal ("1.000000 0.000000 0.000000"); |
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499 | readVertexNormal ("1.000000 0.000000 0.000000"); |
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500 | readVertexNormal ("-1.000000 0.000000 0.000000"); |
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501 | readVertexNormal ("-1.000000 0.000000 0.000000"); |
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502 | readVertexNormal ("-1.000000 0.000000 0.000000"); |
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503 | readVertexNormal ("-1.000000 0.000000 0.000000"); |
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504 | |
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505 | readFace ("1/1/1 2/2/2 4/4/3 3/3/4"); |
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506 | readFace ("3/3/5 4/4/6 6/6/7 5/5/8"); |
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507 | readFace ("5/5/9 6/6/10 8/8/11 7/7/12"); |
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508 | readFace ("7/7/13 8/8/14 2/10/15 1/9/16"); |
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509 | readFace ("2/2/17 8/11/18 6/12/19 4/4/20"); |
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510 | readFace ("7/13/21 1/1/22 3/3/23 5/14/24"); |
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511 | } |
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