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 | TGA-code: borrowed from nehe-Tutorials |
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16 | |
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17 | */ |
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18 | |
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19 | #include "material.h" |
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20 | |
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21 | // headers only for PathList |
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22 | #include <unistd.h> |
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23 | #include <sys/types.h> |
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24 | #include <sys/stat.h> |
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25 | #include <stdlib.h> |
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26 | #include <fstream> |
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27 | |
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28 | using namespace std; |
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29 | |
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30 | /** |
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31 | \brief creates a ned PathList. |
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32 | |
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33 | It is a good idea to use this as an initial List, |
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34 | because if you give on a name the Path will not be checked for its existence. |
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35 | */ |
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36 | PathList::PathList() |
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37 | { |
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38 | pathName = NULL; |
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39 | next = NULL; |
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40 | } |
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41 | |
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42 | /** |
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43 | \brief Creates a new PathList with a Name. |
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44 | \param pName the Name of The Path. |
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45 | |
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46 | This function just adds the Path without checking if it exists. |
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47 | */ |
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48 | PathList::PathList(char* pName) |
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49 | { |
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50 | pathName = new char [strlen(pName)+1]; |
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51 | strcpy (pathName, pName); |
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52 | next = NULL; |
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53 | } |
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54 | |
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55 | /** |
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56 | \brief destroys a PathList |
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57 | |
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58 | It does this by deleting the Name and then delete its preceding PathList. |
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59 | */ |
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60 | PathList::~PathList() |
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61 | { |
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62 | if (pathName) |
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63 | delete []pathName; |
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64 | if (next) |
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65 | delete next; |
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66 | } |
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67 | |
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68 | /** |
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69 | \brief Adds a new Pathlist Element. |
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70 | \param pName |
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71 | |
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72 | Adding a Path automatically checks if the Path exists, |
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73 | and if it does not it will not add it to the List. |
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74 | */ |
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75 | void PathList::addPath (char* pName) |
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76 | { |
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77 | if (pName[0] == '\0') |
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78 | { |
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79 | if (verbose >=3) |
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80 | printf("not Adding empty Path to the List.\n"); |
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81 | return; |
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82 | } |
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83 | char* tmpPName = new char[strlen(pName)]; |
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84 | strncpy(tmpPName, pName, strlen(pName)-1); |
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85 | tmpPName[strlen(pName)-1] = '\0'; |
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86 | printf ("%s\n",tmpPName); |
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87 | if (access (tmpPName, F_OK) == 0) |
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88 | { |
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89 | struct stat status; |
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90 | stat(tmpPName, &status); |
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91 | if (status.st_mode & S_IFDIR) |
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92 | { |
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93 | if (verbose >=2) |
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94 | printf ("Adding Path %s to the PathList.\n", pName); |
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95 | PathList* tmpPathList = this; |
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96 | while (tmpPathList->next) |
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97 | tmpPathList = tmpPathList->next; |
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98 | tmpPathList->next = new PathList(pName); |
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99 | } |
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100 | else |
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101 | if (verbose >=1) |
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102 | printf ("You tried to add non-folder %s to a PathList.\n", tmpPName); |
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103 | } |
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104 | else |
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105 | if (verbose >=1) |
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106 | printf ("You tried to add non-existing folder %s to a PathList.\n", tmpPName); |
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107 | delete []tmpPName; |
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108 | } |
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109 | |
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110 | /** |
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111 | \brief creates a default Material with no Name |
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112 | normally you call this to create a material List (for an obj-file) and then append with addMaterial() |
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113 | */ |
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114 | Material::Material() |
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115 | { |
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116 | init(); |
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117 | |
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118 | setName (""); |
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119 | } |
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120 | |
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121 | /** |
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122 | \brief creates a Material. |
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123 | \param mtlName Name of the Material to be added to the Material List |
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124 | */ |
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125 | Material::Material (char* mtlName) |
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126 | { |
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127 | init(); |
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128 | |
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129 | setName (mtlName); |
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130 | } |
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131 | |
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132 | /** |
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133 | \brief deletes a Material |
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134 | */ |
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135 | Material::~Material() |
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136 | { |
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137 | if (verbose >= 2) |
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138 | printf ("delete Material %s.\n", name); |
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139 | if (name) |
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140 | delete []name; |
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141 | if (diffuseTextureSet) |
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142 | glDeleteTextures (1, &diffuseTexture); |
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143 | if (nextMat) |
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144 | delete nextMat; |
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145 | } |
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146 | |
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147 | /** |
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148 | \brief adds a new Material to the List. |
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149 | this Function will append a new Material to the end of a Material List. |
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150 | \param mtlName The name of the Material to be added. |
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151 | */ |
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152 | Material* Material::addMaterial(char* mtlName) |
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153 | { |
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154 | if (verbose >=2) |
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155 | printf ("adding Material %s.\n", mtlName); |
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156 | Material* tmpMat = this; |
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157 | while (tmpMat->nextMat != NULL) |
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158 | { |
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159 | tmpMat = tmpMat->nextMat; |
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160 | } |
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161 | tmpMat->nextMat = new Material(mtlName); |
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162 | return tmpMat->nextMat; |
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163 | |
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164 | } |
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165 | |
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166 | /** |
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167 | \brief initializes a new Material with its default Values |
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168 | */ |
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169 | void Material::init(void) |
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170 | { |
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171 | if (verbose >= 3) |
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172 | printf ("initializing new Material.\n"); |
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173 | nextMat = NULL; |
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174 | name =""; |
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175 | setIllum(1); |
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176 | setDiffuse(0,0,0); |
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177 | setAmbient(0,0,0); |
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178 | setSpecular(.5,.5,.5); |
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179 | setShininess(2.0); |
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180 | setTransparency(0.0); |
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181 | |
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182 | if (!pathList) |
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183 | pathList = new PathList(""); |
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184 | |
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185 | |
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186 | diffuseTextureSet = false; |
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187 | ambientTextureSet = false; |
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188 | specularTextureSet = false; |
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189 | |
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190 | |
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191 | } |
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192 | |
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193 | PathList *Material::pathList = NULL; |
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194 | |
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195 | /** |
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196 | \brief Search for a Material called mtlName |
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197 | \param mtlName the Name of the Material to search for |
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198 | \returns Material named mtlName if it is found. NULL otherwise. |
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199 | */ |
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200 | Material* Material::search (char* mtlName) |
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201 | { |
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202 | if (verbose >=3) |
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203 | printf ("Searching for material %s", mtlName); |
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204 | Material* searcher = this; |
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205 | while (searcher != NULL) |
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206 | { |
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207 | if (verbose >= 3) |
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208 | printf ("."); |
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209 | if (!strcmp (searcher->getName(), mtlName)) |
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210 | { |
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211 | if (verbose >= 3) |
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212 | printf ("found.\n"); |
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213 | return searcher; |
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214 | } |
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215 | searcher = searcher->nextMat; |
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216 | } |
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217 | if (verbose >=3) |
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218 | printf ("not found\n"); |
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219 | return NULL; |
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220 | } |
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221 | |
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222 | /** |
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223 | \brief sets the material with which the following Faces will be painted |
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224 | */ |
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225 | bool Material::select (void) |
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226 | { |
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227 | // setting diffuse color |
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228 | // glColor3f (diffuse[0], diffuse[1], diffuse[2]); |
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229 | glMaterialfv(GL_FRONT, GL_DIFFUSE, diffuse); |
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230 | |
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231 | // setting ambient color |
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232 | glMaterialfv(GL_FRONT, GL_AMBIENT, ambient); |
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233 | |
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234 | // setting up Sprecular |
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235 | glMaterialfv(GL_FRONT, GL_SPECULAR, specular); |
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236 | |
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237 | // setting up Shininess |
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238 | glMaterialf(GL_FRONT, GL_SHININESS, shininess); |
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239 | |
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240 | // setting illumination Model |
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241 | if (illumModel == 1) |
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242 | glShadeModel(GL_FLAT); |
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243 | else if (illumModel >= 2) |
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244 | glShadeModel(GL_SMOOTH); |
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245 | |
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246 | if (diffuseTextureSet) |
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247 | glBindTexture(GL_TEXTURE_2D, diffuseTexture); |
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248 | else |
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249 | glBindTexture(GL_TEXTURE_2D, 0); |
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250 | |
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251 | } |
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252 | |
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253 | |
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254 | /** |
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255 | \brief Set the Name of the Material. (Important for searching) |
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256 | \param mtlName the Name of the Material to be set. |
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257 | */ |
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258 | void Material::setName (char* mtlName) |
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259 | { |
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260 | name = new char [strlen(mtlName)+1]; |
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261 | strcpy(name, mtlName); |
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262 | if (verbose >= 3) |
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263 | printf("setting Material Name to %s.\n", name); |
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264 | |
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265 | // printf ("adding new Material: %s, %p\n", this->getName(), this); |
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266 | |
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267 | } |
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268 | /** |
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269 | \returns The Name of The Material |
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270 | */ |
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271 | char* Material::getName (void) |
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272 | { |
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273 | return name; |
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274 | } |
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275 | |
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276 | /** |
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277 | \brief Sets the Material Illumination Model. |
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278 | \brief illu illumination Model in int form |
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279 | */ |
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280 | void Material::setIllum (int illum) |
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281 | { |
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282 | if (verbose >= 3) |
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283 | printf("setting illumModel of Material %s to %i\n", name, illum); |
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284 | illumModel = illum; |
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285 | // printf ("setting illumModel to: %i\n", illumModel); |
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286 | } |
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287 | /** |
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288 | \brief Sets the Material Illumination Model. |
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289 | \brief illu illumination Model in char* form |
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290 | */void Material::setIllum (char* illum) |
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291 | { |
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292 | setIllum (atoi(illum)); |
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293 | } |
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294 | |
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295 | /** |
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296 | \brief Sets the Material Diffuse Color. |
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297 | \param r Red Color Channel. |
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298 | \param g Green Color Channel. |
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299 | \param b Blue Color Channel. |
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300 | */ |
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301 | void Material::setDiffuse (float r, float g, float b) |
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302 | { |
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303 | if (verbose >= 3) |
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304 | printf ("setting Diffuse Color of Material %s to r=%f g=%f b=%f.\n", name, r, g, b); |
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305 | diffuse[0] = r; |
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306 | diffuse[1] = g; |
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307 | diffuse[2] = b; |
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308 | diffuse[3] = 1.0; |
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309 | |
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310 | } |
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311 | /** |
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312 | \brief Sets the Material Diffuse Color. |
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313 | \param rgb The red, green, blue channel in char format (with spaces between them) |
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314 | */ |
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315 | void Material::setDiffuse (char* rgb) |
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316 | { |
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317 | float r,g,b; |
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318 | sscanf (rgb, "%f %f %f", &r, &g, &b); |
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319 | setDiffuse (r, g, b); |
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320 | } |
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321 | |
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322 | /** |
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323 | \brief Sets the Material Ambient Color. |
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324 | \param r Red Color Channel. |
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325 | \param g Green Color Channel. |
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326 | \param b Blue Color Channel. |
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327 | */ |
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328 | void Material::setAmbient (float r, float g, float b) |
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329 | { |
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330 | if (verbose >=3) |
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331 | printf ("setting Ambient Color of Material %s to r=%f g=%f b=%f.\n", name, r, g, b); |
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332 | ambient[0] = r; |
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333 | ambient[1] = g; |
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334 | ambient[2] = b; |
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335 | ambient[3] = 1.0; |
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336 | } |
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337 | /** |
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338 | \brief Sets the Material Ambient Color. |
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339 | \param rgb The red, green, blue channel in char format (with spaces between them) |
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340 | */ |
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341 | void Material::setAmbient (char* rgb) |
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342 | { |
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343 | float r,g,b; |
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344 | sscanf (rgb, "%f %f %f", &r, &g, &b); |
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345 | setAmbient (r, g, b); |
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346 | } |
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347 | |
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348 | /** |
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349 | \brief Sets the Material Specular Color. |
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350 | \param r Red Color Channel. |
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351 | \param g Green Color Channel. |
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352 | \param b Blue Color Channel. |
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353 | */ |
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354 | void Material::setSpecular (float r, float g, float b) |
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355 | { |
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356 | if (verbose >= 3) |
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357 | printf ("setting Specular Color of Material %s to r=%f g=%f b=%f.\n", name, r, g, b); |
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358 | specular[0] = r; |
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359 | specular[1] = g; |
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360 | specular[2] = b; |
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361 | specular[3] = 1.0; |
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362 | } |
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363 | /** |
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364 | \brief Sets the Material Specular Color. |
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365 | \param rgb The red, green, blue channel in char format (with spaces between them) |
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366 | */ |
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367 | void Material::setSpecular (char* rgb) |
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368 | { |
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369 | float r,g,b; |
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370 | sscanf (rgb, "%f %f %f", &r, &g, &b); |
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371 | setSpecular (r, g, b); |
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372 | } |
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373 | |
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374 | /** |
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375 | \brief Sets the Material Shininess. |
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376 | \param shini stes the Shininess from float. |
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377 | */ |
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378 | void Material::setShininess (float shini) |
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379 | { |
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380 | shininess = shini; |
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381 | } |
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382 | /** |
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383 | \brief Sets the Material Shininess. |
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384 | \param shini stes the Shininess from char*. |
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385 | */ |
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386 | void Material::setShininess (char* shini) |
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387 | { |
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388 | setShininess (atof(shini)); |
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389 | } |
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390 | |
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391 | /** |
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392 | \brief Sets the Material Transparency. |
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393 | \param trans stes the Transparency from int. |
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394 | */ |
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395 | void Material::setTransparency (float trans) |
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396 | { |
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397 | if (verbose >= 3) |
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398 | printf ("setting Transparency of Material %s to %f.\n", name, trans); |
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399 | transparency = trans; |
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400 | } |
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401 | /** |
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402 | \brief Sets the Material Transparency. |
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403 | \param trans stes the Transparency from char*. |
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404 | */ |
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405 | void Material::setTransparency (char* trans) |
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406 | { |
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407 | setTransparency (atof(trans)); |
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408 | } |
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409 | |
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410 | /** |
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411 | \brief Adds a Texture Path to the List of already existing Paths |
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412 | \param pathName The Path to add. |
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413 | */ |
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414 | void Material::addTexturePath(char* pathName) |
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415 | { |
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416 | pathList->addPath (pathName); |
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417 | } |
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418 | |
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419 | /** |
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420 | \brief Searches for a Texture inside one of the defined Paths |
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421 | \param texName The name of the texture o search for. |
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422 | \returns pathName+texName if texName was found in the pathList. NULL if the Texture is not found. |
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423 | */ |
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424 | char* Material::searchTextureInPaths(char* texName) const |
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425 | { |
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426 | char* tmpName = NULL; |
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427 | PathList* pList = pathList; |
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428 | while (pList) |
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429 | { |
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430 | if (pList->pathName) |
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431 | { |
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432 | tmpName = new char [strlen(pList->pathName)+strlen(texName)+1]; |
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433 | strcpy(tmpName, pList->pathName); |
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434 | } |
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435 | else |
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436 | { |
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437 | tmpName = new char [strlen(texName)+1]; |
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438 | tmpName[0]='\0'; |
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439 | } |
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440 | strcat(tmpName, texName); |
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441 | printf("%s\n", tmpName); |
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442 | if (access (tmpName, F_OK) == 0) |
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443 | return tmpName; |
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444 | |
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445 | if (tmpName) |
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446 | delete []tmpName; |
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447 | tmpName = NULL; |
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448 | pList = pList->next; |
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449 | } |
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450 | return NULL; |
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451 | } |
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452 | |
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453 | |
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454 | // MAPPING // |
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455 | |
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456 | /** |
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457 | \brief Sets the Materials Diffuse Map |
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458 | \param dMap the Name of the Image to Use |
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459 | */ |
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460 | void Material::setDiffuseMap(char* dMap) |
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461 | { |
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462 | if (verbose>=2) |
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463 | printf ("setting Diffuse Map %s\n", dMap); |
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464 | |
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465 | // diffuseTextureSet = loadBMP(dMap, &diffuseTexture); |
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466 | diffuseTextureSet = loadImage(dMap, &diffuseTexture); |
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467 | |
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468 | } |
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469 | |
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470 | /** |
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471 | \brief Sets the Materials Ambient Map |
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472 | \param aMap the Name of the Image to Use |
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473 | */ |
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474 | void Material::setAmbientMap(char* aMap) |
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475 | { |
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476 | SDL_Surface* ambientMap; |
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477 | |
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478 | } |
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479 | |
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480 | /** |
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481 | \brief Sets the Materials Specular Map |
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482 | \param sMap the Name of the Image to Use |
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483 | */ |
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484 | void Material::setSpecularMap(char* sMap) |
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485 | { |
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486 | SDL_Surface* specularMap; |
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487 | |
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488 | } |
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489 | |
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490 | /** |
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491 | \brief Sets the Materials Bumpiness |
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492 | \param bump the Name of the Image to Use |
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493 | */ |
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494 | void Material::setBump(char* bump) |
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495 | { |
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496 | |
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497 | } |
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498 | |
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499 | /** |
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500 | \brief Loads a Texture to the openGL-environment. |
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501 | \param pImage The Image to load to openGL |
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502 | \param texture The Texture to apply it to. |
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503 | */ |
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504 | bool Material::loadTexToGL (Image* pImage, GLuint* texture) |
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505 | { |
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506 | if (verbose >=3) |
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507 | printf ("Loading texture to OpenGL-Environment.\n"); |
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508 | glGenTextures(1, texture); |
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509 | glBindTexture(GL_TEXTURE_2D, *texture); |
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510 | /* not Working, and not needed. |
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511 | glTexImage2D( GL_TEXTURE_2D, 0, 3, width, |
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512 | height, 0, GL_BGR, |
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513 | GL_UNSIGNED_BYTE, map->pixels ); |
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514 | */ |
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515 | gluBuild2DMipmaps(GL_TEXTURE_2D, 3, pImage->width, pImage->height, GL_RGB, GL_UNSIGNED_BYTE, pImage->data); |
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516 | |
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517 | glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_LINEAR_MIPMAP_NEAREST); |
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518 | glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_LINEAR_MIPMAP_LINEAR); |
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519 | } |
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520 | |
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521 | |
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522 | #ifdef HAVE_SDL_SDL_IMAGE_H |
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523 | bool Material::loadImage(char* imageName, GLuint* texture) |
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524 | { |
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525 | char* imgNameWithPath = searchTextureInPaths(imageName); |
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526 | if (imgNameWithPath) |
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527 | { |
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528 | SDL_Surface* map; |
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529 | Image* pImage = new Image; |
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530 | map=IMG_Load(imgNameWithPath); |
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531 | if(!map) |
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532 | { |
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533 | printf("IMG_Load: %s\n", IMG_GetError()); |
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534 | return false; |
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535 | } |
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536 | pImage->height = map->h; |
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537 | pImage->width = map->w; |
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538 | pImage->data = (GLubyte*)map->pixels; |
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539 | if( !IMG_isPNG(SDL_RWFromFile(imgNameWithPath, "rb")) && !IMG_isJPG(SDL_RWFromFile(imgNameWithPath, "rb"))) |
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540 | for (int i=0;i<map->h * map->w *3;i+=3) |
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541 | { |
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542 | GLuint temp = pImage->data[i]; |
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543 | pImage->data[i] = pImage->data[i+2]; |
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544 | pImage->data[i+2] = temp; |
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545 | } |
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546 | loadTexToGL (pImage, texture); |
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547 | } |
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548 | else |
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549 | { |
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550 | if (verbose >=1) |
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551 | printf ("Image not Found: %s\n", imgNameWithPath); |
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552 | return false; |
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553 | } |
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554 | } |
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555 | |
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556 | |
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557 | #else /* HAVE_SDL_SDL_IMAGE_H */ |
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558 | /** |
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559 | \brief Makes the Programm ready to Read-in a texture-File |
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560 | 1. Checks what type of Image should be imported |
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561 | 2. ToDO: Checks where to find the Image |
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562 | */ |
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563 | bool Material::loadImage(char* imageName, GLuint* texture) |
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564 | { |
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565 | char* imgNameWithPath = searchTextureInPaths(imageName); |
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566 | if (imgNameWithPath) |
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567 | { |
---|
568 | if (!strncmp(imgNameWithPath+strlen(imgNameWithPath)-4, ".bmp", 4)) |
---|
569 | { |
---|
570 | if (verbose >=2) |
---|
571 | printf ("Requested bmp-image. Trying to Import.\n"); |
---|
572 | return loadBMP(imgNameWithPath, texture); |
---|
573 | } |
---|
574 | |
---|
575 | else if (!strncmp(imgNameWithPath+strlen(imgNameWithPath)-4, ".jpg", 4) || !strncmp(imgNameWithPath+strlen(imgNameWithPath)-5, ".jpg", 5)) |
---|
576 | { |
---|
577 | if (verbose >=2) |
---|
578 | printf ("Requested jpeg-image. Trying to Import\n"); |
---|
579 | return loadJPG(imgNameWithPath, texture); |
---|
580 | } |
---|
581 | else if (!strncmp(imgNameWithPath+strlen(imgNameWithPath)-4, ".tga", 4)) |
---|
582 | { |
---|
583 | if (verbose >=2) |
---|
584 | printf ("Requested tga-image. Trying to Import\n"); |
---|
585 | return loadTGA(imgNameWithPath, texture); |
---|
586 | } |
---|
587 | else if (!strncmp(imgNameWithPath+strlen(imgNameWithPath)-4, ".png", 4)) |
---|
588 | { |
---|
589 | if (verbose >=2) |
---|
590 | printf ("Requested png-image. Trying to Import\n"); |
---|
591 | return loadPNG(imgNameWithPath, texture); |
---|
592 | } |
---|
593 | else |
---|
594 | { |
---|
595 | if (verbose >=1) |
---|
596 | printf ("Requested Image was not recognized in its type. (Maybe a type-Cast-error.)\n FileName: %s", imgNameWithPath); |
---|
597 | return false; |
---|
598 | } |
---|
599 | } |
---|
600 | else |
---|
601 | { |
---|
602 | if (verbose >=1) |
---|
603 | printf ("Image not Found: %s\n", imgNameWithPath); |
---|
604 | return false; |
---|
605 | } |
---|
606 | } |
---|
607 | |
---|
608 | /** |
---|
609 | \brief reads in a Windows BMP-file, and imports it to openGL. |
---|
610 | \param bmpName The name of the Image to load. |
---|
611 | \param texture A pointer to the Texture which should be read to. |
---|
612 | */ |
---|
613 | bool Material::loadBMP (char* bmpName, GLuint* texture) |
---|
614 | { |
---|
615 | Image* pImage = new Image; |
---|
616 | FILE *file; |
---|
617 | unsigned long size; // size of the image in bytes. |
---|
618 | unsigned long i; // standard counter. |
---|
619 | unsigned short int planes; // number of planes in image (must be 1) |
---|
620 | unsigned short int bpp; // number of bits per pixel (must be 24) |
---|
621 | GLuint temp; // temporary color storage for bgr-rgb conversion. |
---|
622 | |
---|
623 | // make sure the file is there. |
---|
624 | if ((file = fopen(bmpName, "rb"))==NULL) |
---|
625 | { |
---|
626 | if (verbose >=1) |
---|
627 | printf("File Not Found : %s\n",bmpName); |
---|
628 | return false; |
---|
629 | } |
---|
630 | // seek through the bmp header, up to the width/height: |
---|
631 | fseek(file, 18, SEEK_CUR); |
---|
632 | |
---|
633 | // read the width |
---|
634 | if ((i = fread(&pImage->width, 4, 1, file)) != 1) |
---|
635 | { |
---|
636 | if (verbose >=1) |
---|
637 | printf("Error reading width from %s.\n", bmpName); |
---|
638 | return false; |
---|
639 | } |
---|
640 | // read the height |
---|
641 | if ((i = fread(&pImage->height, 4, 1, file)) != 1) |
---|
642 | { |
---|
643 | if (verbose>=1) |
---|
644 | printf("Error reading height from %s.\n", bmpName); |
---|
645 | return false; |
---|
646 | } |
---|
647 | |
---|
648 | // calculate the size (assuming 24 bits or 3 bytes per pixel). |
---|
649 | size = pImage->width * pImage->height * 3; |
---|
650 | |
---|
651 | // read the planes |
---|
652 | if ((fread(&planes, 2, 1, file)) != 1) |
---|
653 | { |
---|
654 | if (verbose>=1) |
---|
655 | printf("Error reading planes from %s.\n", bmpName); |
---|
656 | return false; |
---|
657 | } |
---|
658 | if (planes != 1) |
---|
659 | { |
---|
660 | if (verbose>=1) |
---|
661 | printf("Planes from %s is not 1: %u\n", bmpName, planes); |
---|
662 | return false; |
---|
663 | } |
---|
664 | |
---|
665 | // read the bpp |
---|
666 | if ((i = fread(&bpp, 2, 1, file)) != 1) |
---|
667 | { |
---|
668 | if (verbose>=1) |
---|
669 | printf("Error reading bpp from %s.\n", bmpName); |
---|
670 | return false; |
---|
671 | } |
---|
672 | if (bpp != 24) |
---|
673 | { |
---|
674 | if (verbose>=1) |
---|
675 | printf("Bpp from %s is not 24: %u\n", bmpName, bpp); |
---|
676 | return false; |
---|
677 | } |
---|
678 | |
---|
679 | // seek past the rest of the bitmap header. |
---|
680 | fseek(file, 24, SEEK_CUR); |
---|
681 | |
---|
682 | // read the data. |
---|
683 | pImage->data = (GLubyte *) malloc(size); |
---|
684 | if (pImage->data == NULL) |
---|
685 | { |
---|
686 | if (verbose>=1) |
---|
687 | printf("Error allocating memory for color-corrected image data"); |
---|
688 | return false; |
---|
689 | } |
---|
690 | |
---|
691 | if ((i = fread(pImage->data, size, 1, file)) != 1) |
---|
692 | { |
---|
693 | if (verbose>=1) |
---|
694 | printf("Error reading image data from %s.\n", bmpName); |
---|
695 | return false; |
---|
696 | } |
---|
697 | fclose(file); |
---|
698 | |
---|
699 | // reverse all of the colors. (bgr -> rgb) |
---|
700 | for (i=0;i<size;i+=3) |
---|
701 | { |
---|
702 | temp = pImage->data[i]; |
---|
703 | pImage->data[i] = pImage->data[i+2]; |
---|
704 | pImage->data[i+2] = temp; |
---|
705 | } |
---|
706 | loadTexToGL (pImage, texture); |
---|
707 | |
---|
708 | return true; |
---|
709 | |
---|
710 | if (pImage) |
---|
711 | { |
---|
712 | if (pImage->data) |
---|
713 | { |
---|
714 | free(pImage->data); |
---|
715 | } |
---|
716 | |
---|
717 | free(pImage); |
---|
718 | } |
---|
719 | |
---|
720 | } |
---|
721 | |
---|
722 | /** |
---|
723 | \brief reads in a jpg-file |
---|
724 | \param jpgName the Name of the Image to load |
---|
725 | \param texture a reference to the Texture to write the image to |
---|
726 | */ |
---|
727 | bool Material::loadJPG (char* jpgName, GLuint* texture) |
---|
728 | { |
---|
729 | #ifdef HAVE_JPEGLIB_H |
---|
730 | struct jpeg_decompress_struct cinfo; |
---|
731 | Image *pImage = NULL; |
---|
732 | FILE *pFile; |
---|
733 | |
---|
734 | // Open a file pointer to the jpeg file and check if it was found and opened |
---|
735 | if((pFile = fopen(jpgName, "rb")) == NULL) |
---|
736 | { |
---|
737 | // Display an error message saying the file was not found, then return NULL |
---|
738 | printf("Unable to load JPG File %s.\n", jpgName); |
---|
739 | return false; |
---|
740 | } |
---|
741 | |
---|
742 | // Create an error handler |
---|
743 | jpeg_error_mgr jerr; |
---|
744 | |
---|
745 | // Have our compression info object point to the error handler address |
---|
746 | cinfo.err = jpeg_std_error(&jerr); |
---|
747 | |
---|
748 | // Initialize the decompression object |
---|
749 | jpeg_create_decompress(&cinfo); |
---|
750 | |
---|
751 | // Specify the data source (Our file pointer) |
---|
752 | jpeg_stdio_src(&cinfo, pFile); |
---|
753 | |
---|
754 | // Allocate the structure that will hold our eventual jpeg data (must free it!) |
---|
755 | pImage = (Image*)malloc(sizeof(Image)); |
---|
756 | |
---|
757 | // DECOFING |
---|
758 | // Read in the header of the jpeg file |
---|
759 | jpeg_read_header(&cinfo, TRUE); |
---|
760 | |
---|
761 | // Start to decompress the jpeg file with our compression info |
---|
762 | jpeg_start_decompress(&cinfo); |
---|
763 | |
---|
764 | // Get the image dimensions and row span to read in the pixel data |
---|
765 | pImage->rowSpan = cinfo.image_width * cinfo.num_components; |
---|
766 | pImage->width = cinfo.image_width; |
---|
767 | pImage->height = cinfo.image_height; |
---|
768 | |
---|
769 | // Allocate memory for the pixel buffer |
---|
770 | pImage->data = new unsigned char[pImage->rowSpan * pImage->height]; |
---|
771 | |
---|
772 | // Here we use the library's state variable cinfo.output_scanline as the |
---|
773 | // loop counter, so that we don't have to keep track ourselves. |
---|
774 | |
---|
775 | // Create an array of row pointers |
---|
776 | unsigned char** rowPtr = new unsigned char*[pImage->height]; |
---|
777 | for (int i = 0; i < pImage->height; i++) |
---|
778 | rowPtr[i] = &(pImage->data[i*pImage->rowSpan]); |
---|
779 | |
---|
780 | // Now comes the juice of our work, here we extract all the pixel data |
---|
781 | int rowsRead = 0; |
---|
782 | while (cinfo.output_scanline < cinfo.output_height) |
---|
783 | { |
---|
784 | // Read in the current row of pixels and increase the rowsRead count |
---|
785 | rowsRead += jpeg_read_scanlines(&cinfo, &rowPtr[rowsRead], cinfo.output_height - rowsRead); |
---|
786 | } |
---|
787 | |
---|
788 | // Delete the temporary row pointers |
---|
789 | delete [] rowPtr; |
---|
790 | |
---|
791 | // Finish decompressing the data |
---|
792 | jpeg_finish_decompress(&cinfo);// decodeJPG(&cinfo, pImage); |
---|
793 | |
---|
794 | // This releases all the stored memory for reading and decoding the jpeg |
---|
795 | jpeg_destroy_decompress(&cinfo); |
---|
796 | |
---|
797 | // Close the file pointer that opened the file |
---|
798 | fclose(pFile); |
---|
799 | |
---|
800 | |
---|
801 | if(pImage == NULL) |
---|
802 | exit(0); |
---|
803 | |
---|
804 | loadTexToGL (pImage, texture); |
---|
805 | if (pImage) |
---|
806 | { |
---|
807 | if (pImage->data) |
---|
808 | { |
---|
809 | free(pImage->data); |
---|
810 | } |
---|
811 | |
---|
812 | free(pImage); |
---|
813 | } |
---|
814 | return true; |
---|
815 | #else /* HAVE_JPEGLIB_H */ |
---|
816 | if (verbose >=1) |
---|
817 | printf ("sorry, but you did not compile with jpeg-support.\nEither install SDL_image or jpeglib, and recompile to see the image\n"); |
---|
818 | return false; |
---|
819 | #endif /* HAVE_JPEGLIB_H */ |
---|
820 | |
---|
821 | } |
---|
822 | |
---|
823 | /** |
---|
824 | \brief reads in a tga-file |
---|
825 | \param tgaName the Name of the Image to load |
---|
826 | \param texture a reference to the Texture to write the image to |
---|
827 | */ |
---|
828 | bool Material::loadTGA(const char * tgaName, GLuint* texture) |
---|
829 | { |
---|
830 | typedef struct |
---|
831 | { |
---|
832 | GLubyte Header[12]; |
---|
833 | } TGAHeader; |
---|
834 | TGAHeader tgaHeader; |
---|
835 | |
---|
836 | GLubyte uTGAcompare[12] = {0,0,2, 0,0,0,0,0,0,0,0,0}; // Uncompressed TGA Header |
---|
837 | GLubyte cTGAcompare[12] = {0,0,10,0,0,0,0,0,0,0,0,0}; // Compressed TGA Header |
---|
838 | FILE * fTGA; |
---|
839 | fTGA = fopen(tgaName, "rb"); |
---|
840 | |
---|
841 | if(fTGA == NULL) |
---|
842 | { |
---|
843 | printf("Error could not open texture file: %s\n", tgaName); |
---|
844 | return false; |
---|
845 | } |
---|
846 | |
---|
847 | if(fread(&tgaHeader, sizeof(TGAHeader), 1, fTGA) == 0) |
---|
848 | { |
---|
849 | printf("Error could not read file header of %s\n", tgaName); |
---|
850 | if(fTGA != NULL) |
---|
851 | { |
---|
852 | fclose(fTGA); |
---|
853 | } |
---|
854 | return false; |
---|
855 | } |
---|
856 | |
---|
857 | if(memcmp(uTGAcompare, &tgaHeader, sizeof(TGAHeader)) == 0) |
---|
858 | { |
---|
859 | loadUncompressedTGA(tgaName, fTGA, texture); |
---|
860 | if (fTGA) |
---|
861 | fclose (fTGA); |
---|
862 | } |
---|
863 | else if(memcmp(cTGAcompare, &tgaHeader, sizeof(TGAHeader)) == 0) |
---|
864 | { |
---|
865 | loadCompressedTGA(tgaName, fTGA, texture); |
---|
866 | if (fTGA) |
---|
867 | fclose (fTGA); |
---|
868 | } |
---|
869 | else |
---|
870 | { |
---|
871 | printf("Error TGA file be type 2 or type 10\n"); |
---|
872 | if (fTGA) |
---|
873 | fclose(fTGA); |
---|
874 | return false; |
---|
875 | } |
---|
876 | return true; |
---|
877 | } |
---|
878 | |
---|
879 | /** |
---|
880 | \brief reads in an uncompressed tga-file |
---|
881 | \param filename the Name of the Image to load |
---|
882 | \param fTGA a Pointer to a File, that should be read |
---|
883 | \param texture a reference to the Texture to write the image to |
---|
884 | */ |
---|
885 | bool Material::loadUncompressedTGA(const char * filename, FILE * fTGA, GLuint* texture) |
---|
886 | { |
---|
887 | GLubyte header[6]; // First 6 Useful Bytes From The Header |
---|
888 | GLuint bytesPerPixel; // Holds Number Of Bytes Per Pixel Used In The TGA File |
---|
889 | GLuint imageSize; // Used To Store The Image Size When Setting Aside Ram |
---|
890 | GLuint temp; // Temporary Variable |
---|
891 | GLuint type; |
---|
892 | GLuint Height; // Height of Image |
---|
893 | GLuint Width; // Width of Image |
---|
894 | GLuint Bpp; // Bits Per Pixel |
---|
895 | |
---|
896 | Image* pImage = new Image; |
---|
897 | GLuint cswap; |
---|
898 | if(fread(header, sizeof(header), 1, fTGA) == 0) |
---|
899 | { |
---|
900 | printf("Error could not read info header\n"); |
---|
901 | return false; |
---|
902 | } |
---|
903 | |
---|
904 | Width = pImage->width = header[1] * 256 + header[0]; |
---|
905 | Height = pImage->height = header[3] * 256 + header[2]; |
---|
906 | Bpp = pImage->bpp = header[4]; |
---|
907 | // Make sure all information is valid |
---|
908 | if((pImage->width <= 0) || (pImage->height <= 0) || ((pImage->bpp != 24) && (pImage->bpp !=32))) |
---|
909 | { |
---|
910 | printf("Error invalid texture information\n"); |
---|
911 | return false; |
---|
912 | } |
---|
913 | |
---|
914 | if(pImage->bpp == 24) |
---|
915 | { |
---|
916 | pImage->type = GL_RGB; |
---|
917 | } |
---|
918 | else |
---|
919 | { |
---|
920 | pImage->type = GL_RGBA; |
---|
921 | } |
---|
922 | |
---|
923 | bytesPerPixel = (Bpp / 8); |
---|
924 | imageSize = (bytesPerPixel * Width * Height); |
---|
925 | pImage->data = (GLubyte*) malloc(imageSize); |
---|
926 | |
---|
927 | if(pImage->data == NULL) |
---|
928 | { |
---|
929 | printf("Error could not allocate memory for image\n"); |
---|
930 | return false; |
---|
931 | } |
---|
932 | |
---|
933 | if(fread(pImage->data, 1, imageSize, fTGA) != imageSize) |
---|
934 | { |
---|
935 | printf("Error could not read image data\n"); |
---|
936 | if(pImage->data != NULL) |
---|
937 | { |
---|
938 | free(pImage->data); |
---|
939 | } |
---|
940 | return false; |
---|
941 | } |
---|
942 | |
---|
943 | for(cswap = 0; cswap < (int)imageSize; cswap += bytesPerPixel) |
---|
944 | { |
---|
945 | pImage->data[cswap] ^= pImage->data[cswap+2] ^= |
---|
946 | pImage->data[cswap] ^= pImage->data[cswap+2]; |
---|
947 | } |
---|
948 | |
---|
949 | loadTexToGL (pImage, texture); |
---|
950 | |
---|
951 | return true; |
---|
952 | } |
---|
953 | |
---|
954 | /** |
---|
955 | \brief reads in a compressed tga-file |
---|
956 | \param filename the Name of the Image to load |
---|
957 | \param fTGA a Pointer to a File, that should be read |
---|
958 | \param texture a reference to the Texture to write the image to |
---|
959 | */ |
---|
960 | bool Material::loadCompressedTGA(const char * filename, FILE * fTGA, GLuint* texture) |
---|
961 | { |
---|
962 | GLubyte header[6]; // First 6 Useful Bytes From The Header |
---|
963 | GLuint bytesPerPixel; // Holds Number Of Bytes Per Pixel Used In The TGA File |
---|
964 | GLuint imageSize; // Used To Store The Image Size When Setting Aside Ram |
---|
965 | GLuint temp; // Temporary Variable |
---|
966 | GLuint type; |
---|
967 | GLuint Height; // Height of Image |
---|
968 | GLuint Width; // Width of Image |
---|
969 | GLuint Bpp; // Bits Per Pixel |
---|
970 | |
---|
971 | Image* pImage = new Image; |
---|
972 | |
---|
973 | |
---|
974 | if(fread(header, sizeof(header), 1, fTGA) == 0) |
---|
975 | { |
---|
976 | printf("Error could not read info header\n"); |
---|
977 | return false; |
---|
978 | } |
---|
979 | |
---|
980 | Width = pImage->width = header[1] * 256 + header[0]; |
---|
981 | Height = pImage->height = header[3] * 256 + header[2]; |
---|
982 | Bpp = pImage->bpp = header[4]; |
---|
983 | |
---|
984 | GLuint pixelcount = Height * Width; |
---|
985 | GLuint currentpixel = 0; |
---|
986 | GLuint currentbyte = 0; |
---|
987 | GLubyte * colorbuffer = (GLubyte *)malloc(bytesPerPixel); |
---|
988 | |
---|
989 | //Make sure all pImage info is ok |
---|
990 | if((pImage->width <= 0) || (pImage->height <= 0) || ((pImage->bpp != 24) && (pImage->bpp !=32))) |
---|
991 | { |
---|
992 | printf("Error Invalid pImage information\n"); |
---|
993 | return false; |
---|
994 | } |
---|
995 | |
---|
996 | bytesPerPixel = (Bpp / 8); |
---|
997 | imageSize = (bytesPerPixel * Width * Height); |
---|
998 | pImage->data = (GLubyte*) malloc(imageSize); |
---|
999 | |
---|
1000 | if(pImage->data == NULL) |
---|
1001 | { |
---|
1002 | printf("Error could not allocate memory for image\n"); |
---|
1003 | return false; |
---|
1004 | } |
---|
1005 | |
---|
1006 | do |
---|
1007 | { |
---|
1008 | GLubyte chunkheader = 0; |
---|
1009 | |
---|
1010 | if(fread(&chunkheader, sizeof(GLubyte), 1, fTGA) == 0) |
---|
1011 | { |
---|
1012 | printf("Error could not read RLE header\n"); |
---|
1013 | if(pImage->data != NULL) |
---|
1014 | { |
---|
1015 | free(pImage->data); |
---|
1016 | } |
---|
1017 | return false; |
---|
1018 | } |
---|
1019 | // If the ehader is < 128, it means the that is the number of RAW color packets minus 1 |
---|
1020 | if(chunkheader < 128) |
---|
1021 | { |
---|
1022 | short counter; |
---|
1023 | chunkheader++; |
---|
1024 | // Read RAW color values |
---|
1025 | for(counter = 0; counter < chunkheader; counter++) |
---|
1026 | { |
---|
1027 | // Try to read 1 pixel |
---|
1028 | if(fread(colorbuffer, 1, bytesPerPixel, fTGA) != bytesPerPixel) |
---|
1029 | { |
---|
1030 | printf("Error could not read image data\n"); |
---|
1031 | if(colorbuffer != NULL) |
---|
1032 | { |
---|
1033 | free(colorbuffer); |
---|
1034 | } |
---|
1035 | |
---|
1036 | if(pImage->data != NULL) |
---|
1037 | { |
---|
1038 | free(pImage->data); |
---|
1039 | } |
---|
1040 | |
---|
1041 | return false; |
---|
1042 | } |
---|
1043 | // write to memory |
---|
1044 | // Flip R and B vcolor values around in the process |
---|
1045 | pImage->data[currentbyte ] = colorbuffer[2]; |
---|
1046 | pImage->data[currentbyte + 1] = colorbuffer[1]; |
---|
1047 | pImage->data[currentbyte + 2] = colorbuffer[0]; |
---|
1048 | |
---|
1049 | if(bytesPerPixel == 4) // if its a 32 bpp image |
---|
1050 | { |
---|
1051 | pImage->data[currentbyte + 3] = colorbuffer[3];// copy the 4th byte |
---|
1052 | } |
---|
1053 | |
---|
1054 | currentbyte += bytesPerPixel; |
---|
1055 | currentpixel++; |
---|
1056 | |
---|
1057 | // Make sure we haven't read too many pixels |
---|
1058 | if(currentpixel > pixelcount) |
---|
1059 | { |
---|
1060 | printf("Error too many pixels read\n"); |
---|
1061 | if(colorbuffer != NULL) |
---|
1062 | { |
---|
1063 | free(colorbuffer); |
---|
1064 | } |
---|
1065 | |
---|
1066 | if(pImage->data != NULL) |
---|
1067 | { |
---|
1068 | free(pImage->data); |
---|
1069 | } |
---|
1070 | |
---|
1071 | return false; |
---|
1072 | } |
---|
1073 | } |
---|
1074 | } |
---|
1075 | // chunkheader > 128 RLE data, next color reapeated chunkheader - 127 times |
---|
1076 | else |
---|
1077 | { |
---|
1078 | short counter; |
---|
1079 | chunkheader -= 127; // Subteact 127 to get rid of the ID bit |
---|
1080 | if(fread(colorbuffer, 1, bytesPerPixel, fTGA) != bytesPerPixel) // Attempt to read following color values |
---|
1081 | { |
---|
1082 | printf("Error could not read from file"); |
---|
1083 | if(colorbuffer != NULL) |
---|
1084 | { |
---|
1085 | free(colorbuffer); |
---|
1086 | } |
---|
1087 | |
---|
1088 | if(pImage->data != NULL) |
---|
1089 | { |
---|
1090 | free(pImage->data); |
---|
1091 | } |
---|
1092 | |
---|
1093 | return false; |
---|
1094 | } |
---|
1095 | |
---|
1096 | for(counter = 0; counter < chunkheader; counter++) //copy the color into the image data as many times as dictated |
---|
1097 | { |
---|
1098 | // switch R and B bytes areound while copying |
---|
1099 | pImage->data[currentbyte ] = colorbuffer[2]; |
---|
1100 | pImage->data[currentbyte + 1] = colorbuffer[1]; |
---|
1101 | pImage->data[currentbyte + 2] = colorbuffer[0]; |
---|
1102 | |
---|
1103 | if(bytesPerPixel == 4) |
---|
1104 | { |
---|
1105 | pImage->data[currentbyte + 3] = colorbuffer[3]; |
---|
1106 | } |
---|
1107 | |
---|
1108 | currentbyte += bytesPerPixel; |
---|
1109 | currentpixel++; |
---|
1110 | |
---|
1111 | if(currentpixel > pixelcount) |
---|
1112 | { |
---|
1113 | printf("Error too many pixels read\n"); |
---|
1114 | if(colorbuffer != NULL) |
---|
1115 | { |
---|
1116 | free(colorbuffer); |
---|
1117 | } |
---|
1118 | |
---|
1119 | if(pImage->data != NULL) |
---|
1120 | { |
---|
1121 | free(pImage->data); |
---|
1122 | } |
---|
1123 | |
---|
1124 | return false; |
---|
1125 | } |
---|
1126 | } |
---|
1127 | } |
---|
1128 | } |
---|
1129 | |
---|
1130 | while(currentpixel < pixelcount); // Loop while there are still pixels left |
---|
1131 | |
---|
1132 | loadTexToGL (pImage, texture); |
---|
1133 | |
---|
1134 | return true; |
---|
1135 | } |
---|
1136 | |
---|
1137 | |
---|
1138 | /* |
---|
1139 | static int ST_is_power_of_two(unsigned int number) |
---|
1140 | { |
---|
1141 | return (number & (number - 1)) == 0; |
---|
1142 | } |
---|
1143 | */ |
---|
1144 | |
---|
1145 | /** |
---|
1146 | \brief reads in a png-file |
---|
1147 | \param pngName the Name of the Image to load |
---|
1148 | \param texture a reference to the Texture to write the image to |
---|
1149 | */ |
---|
1150 | bool Material::loadPNG(const char* pngName, GLuint* texture) |
---|
1151 | { |
---|
1152 | #ifdef HAVE_PNG_H |
---|
1153 | Image* pImage = new Image; |
---|
1154 | |
---|
1155 | FILE *PNG_file = fopen(pngName, "rb"); |
---|
1156 | if (PNG_file == NULL) |
---|
1157 | { |
---|
1158 | return 0; |
---|
1159 | } |
---|
1160 | |
---|
1161 | GLubyte PNG_header[8]; |
---|
1162 | |
---|
1163 | fread(PNG_header, 1, 8, PNG_file); |
---|
1164 | if (png_sig_cmp(PNG_header, 0, 8) != 0) |
---|
1165 | { |
---|
1166 | if (verbose >=2) |
---|
1167 | printf ("Not Recognized as a pngFile\n"); |
---|
1168 | fclose (PNG_file); |
---|
1169 | return 0; |
---|
1170 | } |
---|
1171 | |
---|
1172 | png_structp PNG_reader = png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL); |
---|
1173 | if (PNG_reader == NULL) |
---|
1174 | { |
---|
1175 | fclose(PNG_file); |
---|
1176 | return 0; |
---|
1177 | } |
---|
1178 | |
---|
1179 | png_infop PNG_info = png_create_info_struct(PNG_reader); |
---|
1180 | if (PNG_info == NULL) |
---|
1181 | { |
---|
1182 | png_destroy_read_struct(&PNG_reader, NULL, NULL); |
---|
1183 | fclose(PNG_file); |
---|
1184 | return 0; |
---|
1185 | } |
---|
1186 | |
---|
1187 | png_infop PNG_end_info = png_create_info_struct(PNG_reader); |
---|
1188 | if (PNG_end_info == NULL) |
---|
1189 | { |
---|
1190 | png_destroy_read_struct(&PNG_reader, &PNG_info, NULL); |
---|
1191 | fclose(PNG_file); |
---|
1192 | return 0; |
---|
1193 | } |
---|
1194 | |
---|
1195 | if (setjmp(png_jmpbuf(PNG_reader))) |
---|
1196 | { |
---|
1197 | png_destroy_read_struct(&PNG_reader, &PNG_info, &PNG_end_info); |
---|
1198 | fclose(PNG_file); |
---|
1199 | return (0); |
---|
1200 | } |
---|
1201 | |
---|
1202 | png_init_io(PNG_reader, PNG_file); |
---|
1203 | png_set_sig_bytes(PNG_reader, 8); |
---|
1204 | |
---|
1205 | png_read_info(PNG_reader, PNG_info); |
---|
1206 | |
---|
1207 | pImage->width = png_get_image_width(PNG_reader, PNG_info); |
---|
1208 | pImage->height = png_get_image_height(PNG_reader, PNG_info); |
---|
1209 | |
---|
1210 | png_uint_32 bit_depth, color_type; |
---|
1211 | bit_depth = png_get_bit_depth(PNG_reader, PNG_info); |
---|
1212 | color_type = png_get_color_type(PNG_reader, PNG_info); |
---|
1213 | |
---|
1214 | if (color_type == PNG_COLOR_TYPE_PALETTE) |
---|
1215 | { |
---|
1216 | png_set_palette_to_rgb(PNG_reader); |
---|
1217 | } |
---|
1218 | |
---|
1219 | if (color_type == PNG_COLOR_TYPE_GRAY && bit_depth < 8) |
---|
1220 | { |
---|
1221 | png_set_gray_1_2_4_to_8(PNG_reader); |
---|
1222 | } |
---|
1223 | |
---|
1224 | if (color_type == PNG_COLOR_TYPE_GRAY || color_type == PNG_COLOR_TYPE_GRAY_ALPHA) |
---|
1225 | { |
---|
1226 | png_set_gray_to_rgb(PNG_reader); |
---|
1227 | } |
---|
1228 | |
---|
1229 | if (png_get_valid(PNG_reader, PNG_info, PNG_INFO_tRNS)) |
---|
1230 | { |
---|
1231 | png_set_tRNS_to_alpha(PNG_reader); |
---|
1232 | } |
---|
1233 | else |
---|
1234 | { |
---|
1235 | png_set_filler(PNG_reader, 0xff, PNG_FILLER_AFTER); |
---|
1236 | } |
---|
1237 | |
---|
1238 | if (bit_depth == 16) |
---|
1239 | { |
---|
1240 | png_set_strip_16(PNG_reader); |
---|
1241 | } |
---|
1242 | |
---|
1243 | png_read_update_info(PNG_reader, PNG_info); |
---|
1244 | |
---|
1245 | pImage->data = (png_byte*)malloc(4 * pImage->width * pImage->height); |
---|
1246 | png_byte** PNG_rows = (png_byte**)malloc(pImage->height * sizeof(png_byte*)); |
---|
1247 | |
---|
1248 | unsigned int row; |
---|
1249 | for (row = 0; row < pImage->height; ++row) |
---|
1250 | { |
---|
1251 | PNG_rows[pImage->height - 1 - row] = pImage->data + (row * 4 * pImage->width); |
---|
1252 | } |
---|
1253 | |
---|
1254 | png_read_image(PNG_reader, PNG_rows); |
---|
1255 | |
---|
1256 | free(PNG_rows); |
---|
1257 | |
---|
1258 | png_destroy_read_struct(&PNG_reader, &PNG_info, &PNG_end_info); |
---|
1259 | fclose(PNG_file); |
---|
1260 | |
---|
1261 | /* if (!ST_is_power_of_two(pImage->width) || !ST_is_power_of_two(pImage->height)) |
---|
1262 | { |
---|
1263 | free(pImage->data); |
---|
1264 | return 0; |
---|
1265 | } |
---|
1266 | */ |
---|
1267 | loadTexToGL (pImage, texture); |
---|
1268 | |
---|
1269 | free(pImage->data); |
---|
1270 | |
---|
1271 | return true; |
---|
1272 | #else /* HAVE_PNG_H */ |
---|
1273 | if (verbose >=1) |
---|
1274 | printf ("sorry, but you did not compile with png-support.\nEither install SDL_image or libpng, and recompile to see the image\n"); |
---|
1275 | return false; |
---|
1276 | #endif /* HAVE_PNG_H */ |
---|
1277 | |
---|
1278 | } |
---|
1279 | |
---|
1280 | #endif /* HAVE_SDL_SDL_IMAGE_H */ |
---|