1 | #include "lwReader.h" |
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2 | |
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3 | lwObject *lwReader::readObjectFromFile( const char *nfilename) |
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4 | { |
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5 | lwObject *nobject = NULL; |
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6 | |
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7 | ifstream *ifs = new ifstream(); |
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8 | try |
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9 | { |
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10 | ifs->open(nfilename, ios::in|ios::binary); |
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11 | if (ifs->fail()) |
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12 | cout << "Could not open file: " << nfilename << endl; |
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13 | else |
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14 | nobject = readObjectFromStream( ifs ); |
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15 | } |
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16 | catch (...) |
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17 | { |
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18 | if (nobject) delete nobject; |
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19 | nobject = NULL; |
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20 | } |
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21 | ifs->close(); |
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22 | delete ifs; |
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23 | return nobject; |
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24 | } |
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25 | |
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26 | lwObject *lwReader::readObjectFromStream( istream *nis) |
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27 | { |
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28 | lwObject *nobject = 0; |
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29 | chunksize = 0; |
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30 | currentchunkid = 0; |
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31 | formsize = 0; |
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32 | flen = 0; |
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33 | |
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34 | is = nis; |
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35 | |
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36 | try |
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37 | { |
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38 | long id = getU4(); |
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39 | if ( id == ID_FORM ) |
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40 | { |
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41 | formsize = getU4(); |
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42 | long type = getU4(); |
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43 | |
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44 | switch(type) |
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45 | { |
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46 | case ID_LWO2: |
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47 | nobject = lwGetLWO2(); // FORM0000LWXX -> filelength - 12 |
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48 | break; |
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49 | case ID_LWOB: |
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50 | case ID_LWLO: |
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51 | nobject = lwGetLWLO(); // FORM0000LWXX -> filelength - 12 |
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52 | break; |
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53 | default: |
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54 | throw "File does not contain Lightwave object."; |
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55 | } |
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56 | } |
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57 | else |
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58 | throw "Not an IFF FORM file."; |
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59 | } |
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60 | catch (char *errstr) |
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61 | { |
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62 | cout << "Error near byte " << is->tellg() << " in chunk " << currentchunkid << " : " << errstr << endl; |
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63 | } |
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64 | catch (...) |
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65 | { |
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66 | if (nobject) delete nobject; |
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67 | nobject = NULL; |
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68 | } |
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69 | return nobject; |
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70 | } |
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71 | |
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72 | |
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73 | lwObject *lwReader::lwGetLWLO() |
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74 | { |
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75 | long filepos = is->tellg(); |
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76 | if (filepos == -1) return NULL; |
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77 | long formstart = filepos; |
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78 | long formend = filepos + formsize; // FORM0000LWXX -> filelength - 12 |
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79 | |
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80 | lwObject *object = new lwObject; |
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81 | if ( !object ) return NULL; |
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82 | |
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83 | lwLayer *layer = new lwLayer; |
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84 | if ( !layer ) goto Fail; |
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85 | |
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86 | lwSurface *surface; |
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87 | unsigned int rlen; |
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88 | unsigned long i; |
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89 | while ( filepos < formend ) |
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90 | { |
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91 | currentchunkid = getU4(); |
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92 | chunksize = getU4(); |
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93 | chunksize += chunksize & 1; |
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94 | |
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95 | switch ( currentchunkid ) |
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96 | { |
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97 | case ID_SRFS: |
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98 | if ( !lwGetTags(object->tags )) |
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99 | goto Fail; |
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100 | break; |
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101 | case ID_LAYR: |
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102 | if ( object->layers.size() > 0 ) |
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103 | { |
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104 | layer = new lwLayer; |
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105 | if ( !layer ) goto Fail; |
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106 | } |
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107 | object->layers.push_back(layer); |
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108 | |
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109 | |
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110 | flen = 0; |
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111 | layer->index = getU2(); |
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112 | layer->flags = getU2(); |
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113 | layer->name = getS0(); |
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114 | |
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115 | rlen = flen; |
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116 | if ( rlen < 0 || rlen > chunksize ) goto Fail; |
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117 | if ( rlen < chunksize ) |
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118 | is->seekg(chunksize - rlen, ios_base::cur); |
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119 | break; |
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120 | case ID_PNTS: |
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121 | if ( !lwGetPoints(layer->points )) |
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122 | goto Fail; |
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123 | break; |
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124 | |
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125 | case ID_POLS: |
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126 | if ( !lwGetLWOBPolygons(layer->polygons, layer->pointsoffset )) |
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127 | goto Fail; |
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128 | break; |
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129 | |
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130 | case ID_SURF: |
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131 | surface = lwGetLWOBSurface(object ); |
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132 | if ( surface ) object->surfaces.push_back( surface ); |
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133 | break; |
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134 | |
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135 | case ID_SHCP: |
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136 | default: |
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137 | is->seekg(chunksize, ios_base::cur); |
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138 | break; |
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139 | } |
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140 | |
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141 | /* end of the file? */ |
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142 | |
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143 | filepos = is->tellg(); |
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144 | if ( filepos == -1 ) break; |
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145 | if ( filepos > formend ) break; // read too much |
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146 | } |
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147 | |
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148 | if ( object->layers.size() == 0 ) |
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149 | object->layers.push_back(layer); |
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150 | |
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151 | for (i = 0; i < object->layers.size(); i++) |
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152 | { |
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153 | layer = object->layers[i]; |
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154 | layer->lwGetBoundingBox(); |
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155 | layer->lwResolveVertexPoints(); |
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156 | layer->calculatePolygonNormals(); |
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157 | layer->lwGetPointPolygons(); |
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158 | |
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159 | if ( !layer->lwResolvePolySurfaces(object->surfaces, object->tags)) goto Fail; |
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160 | layer->calculateVertexNormals(); |
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161 | } |
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162 | |
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163 | return object; |
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164 | Fail: |
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165 | if (object) delete object; |
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166 | return NULL; |
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167 | } |
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168 | |
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169 | lwObject *lwReader::lwGetLWO2() |
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170 | { |
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171 | long filepos = is->tellg(); |
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172 | if (filepos == -1) return NULL; |
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173 | long formstart = filepos; |
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174 | long formend = filepos + formsize; // FORM0000LWXX -> filelength - 12 |
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175 | |
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176 | /* allocate an object and a default layer */ |
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177 | |
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178 | lwObject *object = new lwObject; |
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179 | if ( !object ) return NULL; |
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180 | |
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181 | lwLayer *layer = new lwLayer; |
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182 | if ( !layer ) goto Fail; |
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183 | |
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184 | unsigned int i, rlen; |
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185 | |
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186 | lwVMap *vmap; |
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187 | lwEnvelope *envelope; |
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188 | lwClip *clip; |
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189 | lwSurface *surface; |
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190 | |
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191 | /* process chunks as they're encountered */ |
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192 | |
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193 | while ( filepos < formend ) |
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194 | { |
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195 | currentchunkid = getU4(); |
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196 | chunksize = getU4(); |
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197 | chunksize += chunksize & 1; |
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198 | |
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199 | switch ( currentchunkid ) |
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200 | { |
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201 | case ID_LAYR: |
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202 | if ( object->layers.size() > 0 ) |
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203 | { |
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204 | layer = new lwLayer; |
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205 | if ( !layer ) goto Fail; |
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206 | } |
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207 | object->layers.push_back(layer); |
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208 | |
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209 | flen = 0; |
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210 | layer->index = getU2(); |
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211 | layer->flags = getU2(); |
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212 | layer->pivot.x = getF4(); |
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213 | layer->pivot.y = getF4(); |
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214 | layer->pivot.z = getF4(); |
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215 | layer->name = getS0(); |
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216 | |
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217 | rlen = flen; |
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218 | if ( rlen < 0 || rlen > chunksize ) goto Fail; |
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219 | if ( rlen <= chunksize - 2 ) |
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220 | layer->parent = getU2(); |
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221 | rlen = flen; |
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222 | if ( rlen < chunksize ) |
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223 | is->seekg(chunksize - rlen, ios_base::cur); |
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224 | break; |
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225 | |
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226 | case ID_PNTS: |
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227 | if ( !lwGetPoints(layer->points )) |
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228 | goto Fail; |
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229 | break; |
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230 | |
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231 | case ID_POLS: |
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232 | if ( !lwGetPolygons(layer->polygons, layer->pointsoffset )) |
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233 | goto Fail; |
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234 | break; |
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235 | |
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236 | case ID_VMAP: |
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237 | case ID_VMAD: |
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238 | vmap = lwGetVMap(layer->pointsoffset, layer->polygonsoffset, currentchunkid == ID_VMAD ); |
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239 | if ( !vmap ) goto Fail; |
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240 | layer->vmaps.push_back(vmap); |
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241 | break; |
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242 | |
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243 | case ID_PTAG: |
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244 | if ( !lwGetPolygonTags(object->tags, object->tagsoffset, layer->polygons, layer->polygonsoffset )) |
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245 | goto Fail; |
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246 | break; |
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247 | |
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248 | case ID_BBOX: |
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249 | flen = 0; |
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250 | layer->bboxmin.x = getF4(); |
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251 | layer->bboxmin.y = getF4(); |
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252 | layer->bboxmin.z = getF4(); |
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253 | layer->bboxmax.x = getF4(); |
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254 | layer->bboxmax.y = getF4(); |
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255 | layer->bboxmax.z = getF4(); |
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256 | rlen = flen; |
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257 | if ( rlen < 0 || rlen > chunksize ) goto Fail; |
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258 | if ( rlen < chunksize ) |
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259 | is->seekg(chunksize - rlen, ios_base::cur ); |
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260 | break; |
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261 | |
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262 | case ID_TAGS: |
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263 | if ( !lwGetTags(object->tags )) |
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264 | goto Fail; |
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265 | break; |
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266 | |
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267 | case ID_ENVL: |
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268 | envelope = lwGetEnvelope(); |
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269 | if ( !envelope ) goto Fail; |
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270 | object->envelopes.push_back( envelope ); |
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271 | break; |
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272 | |
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273 | case ID_CLIP: |
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274 | clip = lwGetClip(); |
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275 | if ( !clip ) goto Fail; |
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276 | object->clips.push_back( clip ); |
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277 | break; |
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278 | |
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279 | case ID_SURF: |
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280 | surface = lwGetSurface(); |
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281 | if ( !surface ) goto Fail; |
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282 | object->surfaces.push_back( surface ); |
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283 | break; |
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284 | |
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285 | case ID_DESC: |
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286 | case ID_TEXT: |
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287 | case ID_ICON: |
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288 | default: |
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289 | is->seekg(chunksize, ios_base::cur ); |
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290 | break; |
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291 | } |
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292 | |
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293 | /* end of the file? */ |
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294 | filepos = is->tellg(); |
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295 | if ( filepos == -1 ) break; |
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296 | if ( filepos > formend ) break; // read too much |
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297 | } |
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298 | |
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299 | if ( object->layers.size() == 0 ) |
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300 | object->layers.push_back(layer); |
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301 | |
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302 | for (i = 0; i < object->layers.size(); i++) |
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303 | { |
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304 | layer = object->layers[i]; |
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305 | if ( !layer->lwResolvePolySurfaces(object->surfaces, object->tags)) goto Fail; |
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306 | |
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307 | layer->lwGetBoundingBox(); |
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308 | layer->lwResolveVertexPoints(); |
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309 | layer->calculatePolygonNormals(); |
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310 | layer->lwGetPointPolygons(); |
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311 | layer->calculateVertexNormals(); |
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312 | layer->lwGetPointVMaps(); |
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313 | layer->lwGetPolyVMaps(); |
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314 | } |
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315 | |
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316 | return object; |
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317 | Fail: |
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318 | if(object) delete object; |
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319 | return NULL; |
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320 | } |
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321 | |
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322 | #define FLEN_ERROR INT_MIN |
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323 | |
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324 | #if OGRE_PLATFORM == OGRE_PLATFORM_WIN32 || OGRE_PLATFORM == OGRE_PLATFORM_LINUX |
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325 | /* |
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326 | ===================================================================== |
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327 | revbytes() |
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328 | |
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329 | Reverses byte order in place. |
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330 | |
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331 | INPUTS |
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332 | bp bytes to reverse |
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333 | elsize size of the underlying data type |
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334 | elcount number of elements to swap |
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335 | |
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336 | RESULTS |
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337 | Reverses the byte order in each of elcount elements. |
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338 | |
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339 | This only needs to be defined on little-endian platforms, most |
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340 | notably Windows. lwo2.h replaces this with a #define on big-endian |
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341 | platforms. |
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342 | ===================================================================== */ |
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343 | |
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344 | unsigned short lwReader::swappedShort(unsigned short w) |
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345 | { |
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346 | unsigned short tmp; |
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347 | tmp = (w & 0x00ff); |
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348 | tmp = ((w & 0xff00) >> 0x08) | (tmp << 0x08); |
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349 | return tmp; |
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350 | } |
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351 | |
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352 | unsigned long lwReader::swappedLong(unsigned long w) |
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353 | { |
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354 | unsigned long tmp; |
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355 | tmp = (w & 0x000000ff); |
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356 | tmp = ((w & 0x0000ff00) >> 0x08) | (tmp << 0x08); |
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357 | tmp = ((w & 0x00ff0000) >> 0x10) | (tmp << 0x08); |
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358 | tmp = ((w & 0xff000000) >> 0x18) | (tmp << 0x08); |
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359 | return tmp; |
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360 | } |
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361 | |
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362 | void lwReader::revbytes( void *bp, int elsize, int elcount ) |
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363 | { |
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364 | register char *p, *q; |
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365 | |
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366 | p = ( char * ) bp; |
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367 | |
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368 | if ( elsize == 2 ) { |
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369 | q = p + 1; |
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370 | while ( elcount-- ) { |
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371 | *p ^= *q; |
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372 | *q ^= *p; |
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373 | *p ^= *q; |
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374 | p += 2; |
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375 | q += 2; |
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376 | } |
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377 | return; |
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378 | } |
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379 | |
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380 | while ( elcount-- ) { |
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381 | q = p + elsize - 1; |
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382 | while ( p < q ) { |
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383 | *p ^= *q; |
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384 | *q ^= *p; |
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385 | *p ^= *q; |
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386 | ++p; |
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387 | --q; |
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388 | } |
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389 | p += elsize >> 1; |
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390 | } |
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391 | } |
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392 | #endif |
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393 | |
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394 | char *lwReader::getbytes( int size ) |
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395 | { |
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396 | char *data; |
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397 | |
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398 | if ( flen == FLEN_ERROR ) return NULL; |
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399 | if ( size < 0 ) { |
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400 | flen = FLEN_ERROR; |
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401 | return NULL; |
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402 | } |
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403 | if ( size == 0 ) return NULL; |
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404 | |
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405 | data = (char*)malloc(size); |
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406 | |
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407 | if ( !data ) |
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408 | { |
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409 | flen = FLEN_ERROR; |
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410 | return NULL; |
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411 | } |
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412 | |
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413 | is->read((char *)data, size); |
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414 | if (is->gcount() != size) |
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415 | { |
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416 | flen = FLEN_ERROR; |
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417 | free (data); |
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418 | return NULL; |
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419 | } |
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420 | |
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421 | flen += size; |
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422 | return data; |
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423 | } |
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424 | |
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425 | |
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426 | void lwReader::skipbytes( int n ) |
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427 | { |
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428 | if ( flen == FLEN_ERROR ) return; |
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429 | |
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430 | is->seekg(n, ios_base::cur); |
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431 | |
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432 | if (is->bad()) |
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433 | flen = FLEN_ERROR; |
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434 | else |
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435 | flen += n; |
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436 | } |
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437 | |
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438 | short lwReader::getI2() |
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439 | { |
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440 | short i; |
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441 | |
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442 | if ( flen == FLEN_ERROR ) return 0; |
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443 | |
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444 | is->read((char *)&i, 2); |
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445 | if (is->gcount() != 2) |
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446 | { |
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447 | flen = FLEN_ERROR; |
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448 | return 0; |
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449 | } |
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450 | revbytes( &i, 2, 1 ); |
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451 | flen += 2; |
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452 | return i; |
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453 | } |
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454 | |
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455 | |
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456 | long lwReader::getI4() |
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457 | { |
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458 | long i; |
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459 | |
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460 | if ( flen == FLEN_ERROR ) return 0; |
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461 | |
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462 | is->read((char *)&i, 4); |
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463 | if (is->gcount() != 4) { |
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464 | flen = FLEN_ERROR; |
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465 | return 0; |
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466 | } |
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467 | revbytes( &i, 4, 1 ); |
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468 | flen += 4; |
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469 | return i; |
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470 | } |
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471 | |
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472 | |
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473 | unsigned char lwReader::getU1() |
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474 | { |
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475 | unsigned char i; |
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476 | |
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477 | if ( flen == FLEN_ERROR ) return 0; |
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478 | is->read((char *)&i, 1); |
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479 | if (is->gcount() != 1) |
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480 | { |
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481 | flen = FLEN_ERROR; |
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482 | return 0; |
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483 | } |
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484 | flen += 1; |
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485 | return i; |
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486 | } |
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487 | |
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488 | |
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489 | unsigned short lwReader::getU2() |
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490 | { |
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491 | unsigned short i; |
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492 | |
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493 | if ( flen == FLEN_ERROR ) return 0; |
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494 | is->read((char *)&i, 2); |
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495 | if (is->gcount() != 2) |
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496 | { |
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497 | flen = FLEN_ERROR; |
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498 | return 0; |
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499 | } |
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500 | revbytes( &i, 2, 1 ); |
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501 | flen += 2; |
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502 | return i; |
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503 | } |
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504 | |
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505 | |
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506 | unsigned long lwReader::getU4() |
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507 | { |
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508 | unsigned long i; |
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509 | |
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510 | if ( flen == FLEN_ERROR ) return 0; |
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511 | is->read((char *)&i, 4); |
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512 | if (is->gcount() != 4) |
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513 | { |
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514 | flen = FLEN_ERROR; |
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515 | return 0; |
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516 | } |
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517 | revbytes( &i, 4, 1 ); |
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518 | flen += 4; |
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519 | return i; |
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520 | } |
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521 | |
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522 | |
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523 | int lwReader::getVX() |
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524 | { |
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525 | int i; |
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526 | short c; |
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527 | |
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528 | if ( flen == FLEN_ERROR ) return 0; |
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529 | |
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530 | is->read((char *)&c, 2); |
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531 | |
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532 | if ( (c & 0x00FF) != 0xFF ) |
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533 | { |
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534 | i = swappedShort(c); |
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535 | flen += 2; |
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536 | } |
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537 | else |
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538 | { |
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539 | i = (swappedShort(c) & 0x00FF) << 16; |
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540 | is->read((char *)&c, 2); |
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541 | i |= swappedShort(c); |
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542 | flen += 4; |
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543 | } |
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544 | |
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545 | if ( is->bad() ) { |
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546 | flen = FLEN_ERROR; |
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547 | return 0; |
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548 | } |
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549 | return i; |
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550 | } |
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551 | |
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552 | |
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553 | float lwReader::getF4() |
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554 | { |
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555 | float f; |
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556 | |
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557 | if ( flen == FLEN_ERROR ) return 0.0f; |
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558 | is->read((char *)&f, 4); |
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559 | if (is->gcount() != 4) |
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560 | { |
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561 | flen = FLEN_ERROR; |
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562 | return 0.0f; |
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563 | } |
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564 | revbytes( &f, 4, 1 ); |
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565 | flen += 4; |
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566 | return f; |
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567 | } |
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568 | |
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569 | char *lwReader::getS0() |
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570 | { |
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571 | char *s; |
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572 | int i, len, pos; |
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573 | char c; |
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574 | |
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575 | if ( flen == FLEN_ERROR ) return NULL; |
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576 | |
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577 | pos = is->tellg(); |
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578 | if (pos == -1) return 0; |
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579 | |
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580 | i = 0; |
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581 | do |
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582 | { |
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583 | is->read(&c, 1); |
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584 | i ++; |
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585 | } |
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586 | while (c > 0); |
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587 | |
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588 | if ( i == 1 ) // word align |
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589 | { |
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590 | is->read(&c, 1); |
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591 | flen += 2; |
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592 | return NULL; |
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593 | } |
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594 | |
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595 | len = i + ( i & 1 ); |
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596 | |
---|
597 | s = (char *)malloc(len); |
---|
598 | if ( !s ) |
---|
599 | { |
---|
600 | flen = FLEN_ERROR; |
---|
601 | return NULL; |
---|
602 | } |
---|
603 | |
---|
604 | is->seekg(pos, ios_base::beg); |
---|
605 | if (is->bad()) |
---|
606 | { |
---|
607 | flen = FLEN_ERROR; |
---|
608 | return NULL; |
---|
609 | } |
---|
610 | |
---|
611 | is->read(s, len); |
---|
612 | if (is->gcount() != len) |
---|
613 | { |
---|
614 | flen = FLEN_ERROR; |
---|
615 | return NULL; |
---|
616 | } |
---|
617 | |
---|
618 | flen += len; |
---|
619 | return s; |
---|
620 | } |
---|
621 | |
---|
622 | short lwReader::sgetI2( char **bp ) |
---|
623 | { |
---|
624 | short i; |
---|
625 | |
---|
626 | if ( flen == FLEN_ERROR ) return 0; |
---|
627 | memcpy( &i, *bp, 2 ); |
---|
628 | revbytes( &i, 2, 1 ); |
---|
629 | flen += 2; |
---|
630 | *bp += 2; |
---|
631 | return i; |
---|
632 | } |
---|
633 | |
---|
634 | |
---|
635 | long lwReader::sgetI4( char **bp ) |
---|
636 | { |
---|
637 | long i; |
---|
638 | |
---|
639 | if ( flen == FLEN_ERROR ) return 0; |
---|
640 | memcpy( &i, *bp, 4 ); |
---|
641 | revbytes( &i, 4, 1 ); |
---|
642 | flen += 4; |
---|
643 | *bp += 4; |
---|
644 | return i; |
---|
645 | } |
---|
646 | |
---|
647 | |
---|
648 | unsigned char lwReader::sgetU1( char **bp ) |
---|
649 | { |
---|
650 | unsigned char c; |
---|
651 | |
---|
652 | if ( flen == FLEN_ERROR ) return 0; |
---|
653 | c = **bp; |
---|
654 | flen += 1; |
---|
655 | *bp++; |
---|
656 | return c; |
---|
657 | } |
---|
658 | |
---|
659 | unsigned short lwReader::sgetU2(char **bp ) |
---|
660 | { |
---|
661 | unsigned char *buf = (unsigned char *)*bp; |
---|
662 | unsigned short i; |
---|
663 | |
---|
664 | if ( flen == FLEN_ERROR ) return 0; |
---|
665 | i = ( buf[ 0 ] << 8 ) | buf[ 1 ]; |
---|
666 | flen += 2; |
---|
667 | *bp += 2; |
---|
668 | return i; |
---|
669 | } |
---|
670 | |
---|
671 | unsigned long lwReader::sgetU4( char **bp ) |
---|
672 | { |
---|
673 | unsigned long i; |
---|
674 | |
---|
675 | if ( flen == FLEN_ERROR ) return 0; |
---|
676 | memcpy( &i, *bp, 4 ); |
---|
677 | revbytes( &i, 4, 1 ); |
---|
678 | flen += 4; |
---|
679 | *bp += 4; |
---|
680 | return i; |
---|
681 | } |
---|
682 | |
---|
683 | int lwReader::sgetVX( char **bp ) |
---|
684 | { |
---|
685 | unsigned char *buf = (unsigned char *)*bp; |
---|
686 | int i; |
---|
687 | |
---|
688 | if ( flen == FLEN_ERROR ) return 0; |
---|
689 | |
---|
690 | if ( buf[ 0 ] != 0xFF ) |
---|
691 | { |
---|
692 | i = buf[ 0 ] << 8 | buf[ 1 ]; |
---|
693 | flen += 2; |
---|
694 | *bp += 2; |
---|
695 | } |
---|
696 | else |
---|
697 | { |
---|
698 | i = ( buf[ 1 ] << 16 ) | ( buf[ 2 ] << 8 ) | buf[ 3 ]; |
---|
699 | flen += 4; |
---|
700 | *bp += 4; |
---|
701 | } |
---|
702 | return i; |
---|
703 | } |
---|
704 | |
---|
705 | |
---|
706 | float lwReader::sgetF4( char **bp ) |
---|
707 | { |
---|
708 | float f; |
---|
709 | |
---|
710 | if ( flen == FLEN_ERROR ) return 0.0f; |
---|
711 | memcpy( &f, *bp, 4 ); |
---|
712 | revbytes( &f, 4, 1 ); |
---|
713 | flen += 4; |
---|
714 | *bp += 4; |
---|
715 | return f; |
---|
716 | } |
---|
717 | |
---|
718 | |
---|
719 | char *lwReader::sgetS0( char **bp ) |
---|
720 | { |
---|
721 | char *s; |
---|
722 | const char *buf = (const char *)*bp; |
---|
723 | unsigned int len; |
---|
724 | |
---|
725 | if ( flen == FLEN_ERROR ) return NULL; |
---|
726 | |
---|
727 | len = strlen( buf ) + 1; |
---|
728 | if ( len == 1 ) { |
---|
729 | flen += 2; |
---|
730 | *bp += 2; |
---|
731 | return NULL; |
---|
732 | } |
---|
733 | len += len & 1; |
---|
734 | s = (char *)malloc(len); |
---|
735 | if ( !s ) |
---|
736 | { |
---|
737 | flen = FLEN_ERROR; |
---|
738 | return NULL; |
---|
739 | } |
---|
740 | |
---|
741 | memcpy( s, buf, len ); |
---|
742 | flen += len; |
---|
743 | *bp += len; |
---|
744 | return s; |
---|
745 | } |
---|
746 | |
---|
747 | lwClip *lwReader::lwGetClip() |
---|
748 | { |
---|
749 | lwClip *clip; |
---|
750 | lwPlugin *filt; |
---|
751 | unsigned int id; |
---|
752 | unsigned short sz; |
---|
753 | unsigned int pos, rlen; |
---|
754 | |
---|
755 | |
---|
756 | /* allocate the Clip structure */ |
---|
757 | |
---|
758 | clip = new lwClip; |
---|
759 | if ( !clip ) goto Fail; |
---|
760 | |
---|
761 | /* remember where we started */ |
---|
762 | |
---|
763 | flen = 0; |
---|
764 | pos = is->tellg(); |
---|
765 | |
---|
766 | /* index */ |
---|
767 | |
---|
768 | clip->index = getI4(); |
---|
769 | |
---|
770 | /* first subchunk header */ |
---|
771 | |
---|
772 | clip->type = getU4(); |
---|
773 | sz = getU2(); |
---|
774 | if ( 0 > flen ) goto Fail; |
---|
775 | |
---|
776 | sz += sz & 1; |
---|
777 | flen = 0; |
---|
778 | |
---|
779 | switch ( clip->type ) |
---|
780 | { |
---|
781 | case ID_STIL: |
---|
782 | { |
---|
783 | lwClipStill *still = new lwClipStill; |
---|
784 | still->name = getS0(); |
---|
785 | clip->source.still = still; |
---|
786 | } |
---|
787 | break; |
---|
788 | |
---|
789 | case ID_ISEQ: |
---|
790 | { |
---|
791 | lwClipSeq *seq = new lwClipSeq; |
---|
792 | seq->digits = getU1(); |
---|
793 | seq->flags = getU1(); |
---|
794 | seq->offset = getI2(); |
---|
795 | getU2(); /* reserved */ |
---|
796 | seq->start = getI2(); |
---|
797 | seq->end = getI2(); |
---|
798 | seq->prefix = getS0(); |
---|
799 | seq->suffix = getS0(); |
---|
800 | clip->source.seq = seq; |
---|
801 | } |
---|
802 | break; |
---|
803 | |
---|
804 | case ID_ANIM: |
---|
805 | { |
---|
806 | lwClipAnim *anim = new lwClipAnim; |
---|
807 | anim->name = getS0(); |
---|
808 | anim->server = getS0(); |
---|
809 | rlen = flen; |
---|
810 | anim->data = getbytes( sz - rlen ); |
---|
811 | clip->source.anim = anim; |
---|
812 | } |
---|
813 | break; |
---|
814 | |
---|
815 | case ID_XREF: |
---|
816 | { |
---|
817 | lwClipXRef *xref = new lwClipXRef; |
---|
818 | xref->index = getI4(); |
---|
819 | xref->string = getS0(); |
---|
820 | clip->source.xref = xref; |
---|
821 | } |
---|
822 | break; |
---|
823 | |
---|
824 | case ID_STCC: |
---|
825 | { |
---|
826 | lwClipCycle *cycle = new lwClipCycle; |
---|
827 | cycle->lo = getI2(); |
---|
828 | cycle->hi = getI2(); |
---|
829 | cycle->name = getS0(); |
---|
830 | clip->source.cycle = cycle; |
---|
831 | } |
---|
832 | break; |
---|
833 | |
---|
834 | default: |
---|
835 | break; |
---|
836 | } |
---|
837 | |
---|
838 | /* error while reading current subchunk? */ |
---|
839 | |
---|
840 | rlen = flen; |
---|
841 | if ( rlen < 0 || rlen > sz ) goto Fail; |
---|
842 | |
---|
843 | /* skip unread parts of the current subchunk */ |
---|
844 | |
---|
845 | if ( rlen < sz ) |
---|
846 | is->seekg(sz - rlen, ios_base::cur ); |
---|
847 | |
---|
848 | /* end of the CLIP chunk? */ |
---|
849 | |
---|
850 | rlen = is->tellg(); |
---|
851 | rlen -= pos; |
---|
852 | if ( chunksize < rlen ) goto Fail; |
---|
853 | if ( chunksize == rlen ) |
---|
854 | return clip; |
---|
855 | |
---|
856 | /* process subchunks as they're encountered */ |
---|
857 | |
---|
858 | id = getU4(); |
---|
859 | sz = getU2(); |
---|
860 | if ( 0 > flen ) goto Fail; |
---|
861 | |
---|
862 | for (;;) { |
---|
863 | sz += sz & 1; |
---|
864 | flen = 0; |
---|
865 | |
---|
866 | switch ( id ) { |
---|
867 | case ID_TIME: |
---|
868 | clip->start_time = getF4(); |
---|
869 | clip->duration = getF4(); |
---|
870 | clip->frame_rate = getF4(); |
---|
871 | break; |
---|
872 | |
---|
873 | case ID_CONT: |
---|
874 | clip->contrast.val = getF4(); |
---|
875 | clip->contrast.eindex = getVX(); |
---|
876 | break; |
---|
877 | |
---|
878 | case ID_BRIT: |
---|
879 | clip->brightness.val = getF4(); |
---|
880 | clip->brightness.eindex = getVX(); |
---|
881 | break; |
---|
882 | |
---|
883 | case ID_SATR: |
---|
884 | clip->saturation.val = getF4(); |
---|
885 | clip->saturation.eindex = getVX(); |
---|
886 | break; |
---|
887 | |
---|
888 | case ID_HUE: |
---|
889 | clip->hue.val = getF4(); |
---|
890 | clip->hue.eindex = getVX(); |
---|
891 | break; |
---|
892 | |
---|
893 | case ID_GAMM: |
---|
894 | clip->gamma.val = getF4(); |
---|
895 | clip->gamma.eindex = getVX(); |
---|
896 | break; |
---|
897 | |
---|
898 | case ID_NEGA: |
---|
899 | clip->negative = getU2(); |
---|
900 | break; |
---|
901 | |
---|
902 | case ID_IFLT: |
---|
903 | case ID_PFLT: |
---|
904 | filt = new lwPlugin; |
---|
905 | if ( !filt ) goto Fail; |
---|
906 | |
---|
907 | filt->name = getS0(); |
---|
908 | filt->flags = getU2(); |
---|
909 | rlen = flen; |
---|
910 | filt->data = getbytes( sz - rlen ); |
---|
911 | |
---|
912 | if ( id == ID_IFLT ) |
---|
913 | clip->ifilters.push_back(filt); |
---|
914 | else |
---|
915 | clip->pfilters.push_back(filt); |
---|
916 | |
---|
917 | break; |
---|
918 | |
---|
919 | default: |
---|
920 | break; |
---|
921 | } |
---|
922 | |
---|
923 | /* error while reading current subchunk? */ |
---|
924 | |
---|
925 | rlen = flen; |
---|
926 | if ( rlen < 0 || rlen > sz ) goto Fail; |
---|
927 | |
---|
928 | /* skip unread parts of the current subchunk */ |
---|
929 | |
---|
930 | if ( rlen < sz ) |
---|
931 | is->seekg(sz - rlen, ios_base::cur ); |
---|
932 | |
---|
933 | /* end of the CLIP chunk? */ |
---|
934 | |
---|
935 | rlen = is->tellg(); |
---|
936 | rlen -= pos; |
---|
937 | if ( chunksize < rlen ) goto Fail; |
---|
938 | if ( chunksize == rlen ) break; |
---|
939 | |
---|
940 | /* get the next chunk header */ |
---|
941 | |
---|
942 | flen = 0; |
---|
943 | id = getU4(); |
---|
944 | sz = getU2(); |
---|
945 | if ( 6 != flen ) goto Fail; |
---|
946 | } |
---|
947 | |
---|
948 | return clip; |
---|
949 | |
---|
950 | Fail: |
---|
951 | delete clip; |
---|
952 | return NULL; |
---|
953 | } |
---|
954 | |
---|
955 | lwEnvelope *lwReader::lwGetEnvelope() |
---|
956 | { |
---|
957 | lwEnvelope *env; |
---|
958 | lwKey *key; |
---|
959 | lwPlugin *plug; |
---|
960 | unsigned int id; |
---|
961 | unsigned short sz; |
---|
962 | float f[ 4 ]; |
---|
963 | int i, nparams, pos; |
---|
964 | unsigned int rlen; |
---|
965 | |
---|
966 | /* allocate the Envelope structure */ |
---|
967 | |
---|
968 | env = new lwEnvelope; |
---|
969 | if ( !env ) goto Fail; |
---|
970 | |
---|
971 | /* remember where we started */ |
---|
972 | |
---|
973 | flen = 0; |
---|
974 | pos = is->tellg(); |
---|
975 | |
---|
976 | /* index */ |
---|
977 | |
---|
978 | env->index = getVX(); |
---|
979 | |
---|
980 | /* first subchunk header */ |
---|
981 | |
---|
982 | id = getU4(); |
---|
983 | sz = getU2(); |
---|
984 | if ( 0 > flen ) goto Fail; |
---|
985 | |
---|
986 | /* process subchunks as they're encountered */ |
---|
987 | |
---|
988 | for (;;) { |
---|
989 | sz += sz & 1; |
---|
990 | flen = 0; |
---|
991 | |
---|
992 | switch ( id ) { |
---|
993 | case ID_TYPE: |
---|
994 | env->type = getU2(); |
---|
995 | break; |
---|
996 | |
---|
997 | case ID_NAME: |
---|
998 | env->name = getS0(); |
---|
999 | break; |
---|
1000 | |
---|
1001 | case ID_PRE: |
---|
1002 | env->behavior[ 0 ] = getU2(); |
---|
1003 | break; |
---|
1004 | |
---|
1005 | case ID_POST: |
---|
1006 | env->behavior[ 1 ] = getU2(); |
---|
1007 | break; |
---|
1008 | |
---|
1009 | case ID_KEY: |
---|
1010 | key = env->addKey(getF4(), getF4()); |
---|
1011 | break; |
---|
1012 | |
---|
1013 | case ID_SPAN: |
---|
1014 | if ( !key ) goto Fail; |
---|
1015 | key->shape = getU4(); |
---|
1016 | |
---|
1017 | nparams = ( sz - 4 ) / 4; |
---|
1018 | if ( nparams > 4 ) nparams = 4; |
---|
1019 | for ( i = 0; i < nparams; i++ ) |
---|
1020 | f[ i ] = getF4(); |
---|
1021 | |
---|
1022 | switch ( key->shape ) { |
---|
1023 | case ID_TCB: |
---|
1024 | key->tension = f[ 0 ]; |
---|
1025 | key->continuity = f[ 1 ]; |
---|
1026 | key->bias = f[ 2 ]; |
---|
1027 | break; |
---|
1028 | |
---|
1029 | case ID_BEZI: |
---|
1030 | case ID_HERM: |
---|
1031 | case ID_BEZ2: |
---|
1032 | for ( i = 0; i < nparams; i++ ) |
---|
1033 | key->param[ i ] = f[ i ]; |
---|
1034 | break; |
---|
1035 | } |
---|
1036 | break; |
---|
1037 | |
---|
1038 | case ID_CHAN: |
---|
1039 | plug = new lwPlugin; |
---|
1040 | if ( !plug ) goto Fail; |
---|
1041 | |
---|
1042 | plug->name = getS0(); |
---|
1043 | plug->flags = getU2(); |
---|
1044 | plug->data = getbytes( sz - flen ); |
---|
1045 | |
---|
1046 | env->cfilters.push_back( plug ); |
---|
1047 | env->ncfilters++; |
---|
1048 | break; |
---|
1049 | |
---|
1050 | default: |
---|
1051 | break; |
---|
1052 | } |
---|
1053 | |
---|
1054 | /* error while reading current subchunk? */ |
---|
1055 | |
---|
1056 | rlen = flen; |
---|
1057 | if ( rlen < 0 || rlen > sz ) goto Fail; |
---|
1058 | |
---|
1059 | /* skip unread parts of the current subchunk */ |
---|
1060 | |
---|
1061 | if ( rlen < sz ) |
---|
1062 | is->seekg(sz - rlen, ios_base::cur ); |
---|
1063 | |
---|
1064 | /* end of the ENVL chunk? */ |
---|
1065 | |
---|
1066 | rlen = is->tellg(); |
---|
1067 | rlen -= pos; |
---|
1068 | if ( chunksize < rlen ) goto Fail; |
---|
1069 | if ( chunksize == rlen ) break; |
---|
1070 | |
---|
1071 | /* get the next subchunk header */ |
---|
1072 | |
---|
1073 | flen = 0; |
---|
1074 | id = getU4(); |
---|
1075 | sz = getU2(); |
---|
1076 | if ( 6 != flen ) goto Fail; |
---|
1077 | } |
---|
1078 | |
---|
1079 | return env; |
---|
1080 | |
---|
1081 | Fail: |
---|
1082 | delete env; |
---|
1083 | return NULL; |
---|
1084 | } |
---|
1085 | |
---|
1086 | /* |
---|
1087 | ====================================================================== |
---|
1088 | lwGetPoints() |
---|
1089 | |
---|
1090 | Read point records from a PNTS chunk in an LWO2 file. The points are |
---|
1091 | added to the array in the lwPointags. |
---|
1092 | ====================================================================== */ |
---|
1093 | |
---|
1094 | int lwReader::lwGetPoints( vpoints &points ) |
---|
1095 | { |
---|
1096 | if ( chunksize == 1 ) return 1; |
---|
1097 | |
---|
1098 | int npoints; |
---|
1099 | |
---|
1100 | npoints = chunksize / 12; |
---|
1101 | |
---|
1102 | int rpoints = npoints >= 4096 ? 4096 : npoints; |
---|
1103 | float *f = (float *)malloc(rpoints * 3 * sizeof(float)); |
---|
1104 | |
---|
1105 | while(npoints > 0) |
---|
1106 | { |
---|
1107 | is->read((char *)f, rpoints * 3 * sizeof(float)); |
---|
1108 | revbytes( f, sizeof(float), rpoints * 3 ); |
---|
1109 | for (int i = 0 ; i < rpoints * 3; i += 3 ) |
---|
1110 | points.push_back(new lwPoint(f[ i ], f[ i + 1 ], f[ i + 2 ])); |
---|
1111 | |
---|
1112 | npoints -= rpoints; |
---|
1113 | rpoints = npoints >= 4096 ? 4096 : npoints; |
---|
1114 | } |
---|
1115 | |
---|
1116 | free(f); |
---|
1117 | return 1; |
---|
1118 | } |
---|
1119 | |
---|
1120 | /* |
---|
1121 | ====================================================================== |
---|
1122 | lwGetPolygons5() |
---|
1123 | |
---|
1124 | Read polygon records from a POLS chunk in an LWOB file. The polygons |
---|
1125 | are added to the array in the vpolygons. |
---|
1126 | ======================================================================*/ |
---|
1127 | |
---|
1128 | int lwReader::lwGetLWOBPolygons( vpolygons &polygons, int ptoffset ) |
---|
1129 | { |
---|
1130 | lwPolygon *polygon; |
---|
1131 | |
---|
1132 | char *buf, *bp; |
---|
1133 | int i, j, k, nv, nvertices, npolygons; |
---|
1134 | |
---|
1135 | if ( chunksize == 0 ) return 1; |
---|
1136 | |
---|
1137 | /* read the whole chunk */ |
---|
1138 | |
---|
1139 | flen = 0; |
---|
1140 | buf = getbytes( chunksize ); |
---|
1141 | if ( !buf ) goto Fail; |
---|
1142 | |
---|
1143 | /* count the polygons and vertices */ |
---|
1144 | |
---|
1145 | nvertices = 0; |
---|
1146 | npolygons = 0; |
---|
1147 | bp = buf; |
---|
1148 | |
---|
1149 | while ( bp < buf + chunksize ) |
---|
1150 | { |
---|
1151 | nv = sgetU2( &bp ); |
---|
1152 | nvertices += nv; |
---|
1153 | npolygons++; |
---|
1154 | bp += 2 * nv; |
---|
1155 | i = sgetI2( &bp ); |
---|
1156 | if ( i < 0 ) bp += 2; /* detail polygons */ |
---|
1157 | } |
---|
1158 | |
---|
1159 | k = 0; |
---|
1160 | bp = buf; |
---|
1161 | |
---|
1162 | for ( i = 0; i < npolygons; i++ ) |
---|
1163 | { |
---|
1164 | polygon = new lwPolygon; |
---|
1165 | nv = sgetU2( &bp ); |
---|
1166 | |
---|
1167 | polygon->type = ID_FACE; |
---|
1168 | for ( j = 0; j < nv; j++ ) |
---|
1169 | polygon->vertices.push_back(new lwVertex(sgetU2( &bp ) + ptoffset)); |
---|
1170 | |
---|
1171 | j = sgetI2( &bp ); |
---|
1172 | if ( j < 0 ) { |
---|
1173 | j = -j; |
---|
1174 | bp += 2; |
---|
1175 | } |
---|
1176 | j -= 1; |
---|
1177 | |
---|
1178 | polygon->surfidx = j; |
---|
1179 | polygons.push_back(polygon); |
---|
1180 | } |
---|
1181 | |
---|
1182 | free(buf); |
---|
1183 | return 1; |
---|
1184 | |
---|
1185 | Fail: |
---|
1186 | free(buf); |
---|
1187 | return 0; |
---|
1188 | } |
---|
1189 | |
---|
1190 | int lwReader::lwGetPolygons( vpolygons &polygons, int ptoffset ) |
---|
1191 | { |
---|
1192 | lwPolygon *polygon; |
---|
1193 | char *buf, *bp; |
---|
1194 | |
---|
1195 | int i, j, flags, nv, nvertices, npolygons; |
---|
1196 | unsigned int type; |
---|
1197 | |
---|
1198 | if ( chunksize == 0 ) return 1; |
---|
1199 | |
---|
1200 | /* read the whole chunk */ |
---|
1201 | |
---|
1202 | flen = 0; |
---|
1203 | type = getU4(); |
---|
1204 | buf = getbytes( chunksize - 4 ); |
---|
1205 | if ( chunksize != flen ) goto Fail; |
---|
1206 | |
---|
1207 | /* count the polygons and vertices */ |
---|
1208 | |
---|
1209 | nvertices = 0; |
---|
1210 | npolygons = 0; |
---|
1211 | bp = buf; |
---|
1212 | |
---|
1213 | while ( bp < buf + chunksize - 4 ) |
---|
1214 | { |
---|
1215 | nv = sgetU2( &bp ); |
---|
1216 | nv &= 0x03FF; |
---|
1217 | nvertices += nv; |
---|
1218 | npolygons++; |
---|
1219 | for ( i = 0; i < nv; i++ ) |
---|
1220 | j = sgetVX( &bp ); |
---|
1221 | } |
---|
1222 | |
---|
1223 | /* fill in the new polygons */ |
---|
1224 | |
---|
1225 | bp = buf; |
---|
1226 | |
---|
1227 | for ( i = 0; i < npolygons; i++ ) |
---|
1228 | { |
---|
1229 | nv = sgetU2( &bp ); |
---|
1230 | flags = nv & 0xFC00; |
---|
1231 | nv &= 0x03FF; |
---|
1232 | |
---|
1233 | polygon = new lwPolygon; |
---|
1234 | |
---|
1235 | polygon->flags = flags; |
---|
1236 | polygon->type = type; |
---|
1237 | |
---|
1238 | for (j = 0; j < nv; j++ ) |
---|
1239 | polygon->vertices.push_back(new lwVertex( sgetVX( &bp ) + ptoffset )); |
---|
1240 | |
---|
1241 | polygons.push_back(polygon); |
---|
1242 | } |
---|
1243 | |
---|
1244 | free(buf); |
---|
1245 | return 1; |
---|
1246 | |
---|
1247 | Fail: |
---|
1248 | free(buf); |
---|
1249 | return 0; |
---|
1250 | } |
---|
1251 | |
---|
1252 | /* |
---|
1253 | ====================================================================== |
---|
1254 | lwGetTags() |
---|
1255 | |
---|
1256 | Read tag strings from a TAGS chunk in an LWO2 file. The tags are |
---|
1257 | added to the lwTag array. |
---|
1258 | ====================================================================== */ |
---|
1259 | |
---|
1260 | int lwReader::lwGetTags( vtags &tags ) |
---|
1261 | { |
---|
1262 | char *buf, *bp; |
---|
1263 | |
---|
1264 | if ( chunksize == 0 ) return 1; |
---|
1265 | |
---|
1266 | /* read the whole chunk */ |
---|
1267 | |
---|
1268 | flen = 0; |
---|
1269 | buf = getbytes( chunksize ); |
---|
1270 | if ( !buf ) return 0; |
---|
1271 | |
---|
1272 | bp = buf; |
---|
1273 | while ( bp < buf + chunksize ) |
---|
1274 | tags.push_back( sgetS0( &bp )); |
---|
1275 | |
---|
1276 | free(buf); |
---|
1277 | return 1; |
---|
1278 | } |
---|
1279 | |
---|
1280 | |
---|
1281 | /* |
---|
1282 | ====================================================================== |
---|
1283 | lwGetPolygonTags() |
---|
1284 | |
---|
1285 | Read polygon tags from a PTAG chunk in an LWO2 file. |
---|
1286 | ====================================================================== */ |
---|
1287 | |
---|
1288 | int lwReader::lwGetPolygonTags( vtags &tags, int tagsoffset, vpolygons &polygons, int polygonsoffset ) |
---|
1289 | { |
---|
1290 | unsigned int type; |
---|
1291 | unsigned int rlen; |
---|
1292 | int i, j; |
---|
1293 | |
---|
1294 | flen = 0; |
---|
1295 | type = getU4(); |
---|
1296 | rlen = flen; |
---|
1297 | if ( rlen < 0 ) return 0; |
---|
1298 | |
---|
1299 | if ( type != ID_SURF && type != ID_PART && type != ID_SMGP ) { |
---|
1300 | is->seekg(chunksize - 4, ios_base::cur ); |
---|
1301 | return 1; |
---|
1302 | } |
---|
1303 | |
---|
1304 | switch ( type ) |
---|
1305 | { |
---|
1306 | case ID_SURF: |
---|
1307 | while ( rlen < chunksize ) |
---|
1308 | { |
---|
1309 | i = getVX() + polygonsoffset; |
---|
1310 | j = getVX() + tagsoffset; |
---|
1311 | |
---|
1312 | rlen = flen; |
---|
1313 | if ( rlen < 0 || rlen > chunksize ) return 0; |
---|
1314 | |
---|
1315 | polygons[ i ]->surface = 0; |
---|
1316 | polygons[ i ]->surfidx = j; |
---|
1317 | } |
---|
1318 | break; |
---|
1319 | case ID_PART: |
---|
1320 | while ( rlen < chunksize ) |
---|
1321 | { |
---|
1322 | i = getVX() + polygonsoffset; |
---|
1323 | j = getVX() + tagsoffset; |
---|
1324 | rlen = flen; |
---|
1325 | if ( rlen < 0 || rlen > chunksize ) return 0; |
---|
1326 | |
---|
1327 | polygons[ i ]->part = j; |
---|
1328 | |
---|
1329 | } |
---|
1330 | break; |
---|
1331 | case ID_SMGP: |
---|
1332 | while ( rlen < chunksize ) |
---|
1333 | { |
---|
1334 | i = getVX() + polygonsoffset; |
---|
1335 | j = getVX() + tagsoffset; |
---|
1336 | rlen = flen; |
---|
1337 | if ( rlen < 0 || rlen > chunksize ) return 0; |
---|
1338 | |
---|
1339 | polygons[ i ]->smoothgrp = j; |
---|
1340 | |
---|
1341 | } |
---|
1342 | break; |
---|
1343 | } |
---|
1344 | |
---|
1345 | |
---|
1346 | return 1; |
---|
1347 | } |
---|
1348 | |
---|
1349 | /* |
---|
1350 | ====================================================================== |
---|
1351 | lwGetTHeader() |
---|
1352 | |
---|
1353 | Read a texture map header from a SURF.BLOK in an LWO2 file. This is |
---|
1354 | the first subchunk in a BLOK, and its contents are common to all three |
---|
1355 | texture types. |
---|
1356 | ====================================================================== |
---|
1357 | */ |
---|
1358 | |
---|
1359 | int lwReader::lwGetTHeader( int hsz, lwTexture &tex ) |
---|
1360 | { |
---|
1361 | unsigned int id; |
---|
1362 | unsigned short sz; |
---|
1363 | int pos, rlen; |
---|
1364 | |
---|
1365 | /* remember where we started */ |
---|
1366 | |
---|
1367 | flen = 0; |
---|
1368 | pos = is->tellg(); |
---|
1369 | |
---|
1370 | /* ordinal string */ |
---|
1371 | |
---|
1372 | tex.ord = getS0(); |
---|
1373 | |
---|
1374 | /* first subchunk header */ |
---|
1375 | |
---|
1376 | id = getU4(); |
---|
1377 | sz = getU2(); |
---|
1378 | if ( 0 > flen ) return 0; |
---|
1379 | |
---|
1380 | /* process subchunks as they're encountered */ |
---|
1381 | |
---|
1382 | for (;;) { |
---|
1383 | sz += sz & 1; |
---|
1384 | flen = 0; |
---|
1385 | |
---|
1386 | switch ( id ) { |
---|
1387 | case ID_CHAN: |
---|
1388 | tex.chan = getU4(); |
---|
1389 | break; |
---|
1390 | |
---|
1391 | case ID_OPAC: |
---|
1392 | tex.opac_type = getU2(); |
---|
1393 | tex.opacity.val = getF4(); |
---|
1394 | tex.opacity.eindex = getVX(); |
---|
1395 | break; |
---|
1396 | |
---|
1397 | case ID_ENAB: |
---|
1398 | tex.enabled = getU2(); |
---|
1399 | break; |
---|
1400 | |
---|
1401 | case ID_NEGA: |
---|
1402 | tex.negative = getU2(); |
---|
1403 | break; |
---|
1404 | |
---|
1405 | case ID_AXIS: |
---|
1406 | tex.axis = getU2(); |
---|
1407 | break; |
---|
1408 | |
---|
1409 | default: |
---|
1410 | break; |
---|
1411 | } |
---|
1412 | |
---|
1413 | /* error while reading current subchunk? */ |
---|
1414 | |
---|
1415 | rlen = flen; |
---|
1416 | if ( rlen < 0 || rlen > sz ) return 0; |
---|
1417 | |
---|
1418 | /* skip unread parts of the current subchunk */ |
---|
1419 | |
---|
1420 | if ( rlen < sz ) |
---|
1421 | is->seekg(sz - rlen, ios_base::cur ); |
---|
1422 | |
---|
1423 | /* end of the texture header subchunk? */ |
---|
1424 | |
---|
1425 | int fpos = is->tellg(); |
---|
1426 | if ( fpos == -1 ) break; |
---|
1427 | if ( hsz + pos <= fpos ) break; |
---|
1428 | |
---|
1429 | // if ( hsz + pos <= is->tellg()) |
---|
1430 | // break; |
---|
1431 | |
---|
1432 | /* get the next subchunk header */ |
---|
1433 | |
---|
1434 | flen = 0; |
---|
1435 | id = getU4(); |
---|
1436 | sz = getU2(); |
---|
1437 | if ( 6 != flen ) return 0; |
---|
1438 | }; |
---|
1439 | |
---|
1440 | int g = is->tellg(); |
---|
1441 | flen = g - pos; |
---|
1442 | return 1; |
---|
1443 | } |
---|
1444 | |
---|
1445 | /*====================================================================== |
---|
1446 | lwGetTMap() |
---|
1447 | |
---|
1448 | Read a texture map from a SURF.BLOK in an LWO2 file. The TMAP |
---|
1449 | defines the mapping from texture to world or object coordinates. |
---|
1450 | ====================================================================== */ |
---|
1451 | |
---|
1452 | int lwReader::lwGetTMap( int tmapsz, lwTMap &tmap ) |
---|
1453 | { |
---|
1454 | unsigned int id; |
---|
1455 | unsigned short sz; |
---|
1456 | int rlen, pos, i; |
---|
1457 | |
---|
1458 | pos = is->tellg(); |
---|
1459 | id = getU4(); |
---|
1460 | sz = getU2(); |
---|
1461 | if ( 0 > flen ) return 0; |
---|
1462 | |
---|
1463 | for (;;) { |
---|
1464 | sz += sz & 1; |
---|
1465 | flen = 0; |
---|
1466 | |
---|
1467 | switch ( id ) { |
---|
1468 | case ID_SIZE: |
---|
1469 | for ( i = 0; i < 3; i++ ) |
---|
1470 | tmap.size.val[ i ] = getF4(); |
---|
1471 | tmap.size.eindex = getVX(); |
---|
1472 | break; |
---|
1473 | |
---|
1474 | case ID_CNTR: |
---|
1475 | for ( i = 0; i < 3; i++ ) |
---|
1476 | tmap.center.val[ i ] = getF4(); |
---|
1477 | tmap.center.eindex = getVX(); |
---|
1478 | break; |
---|
1479 | |
---|
1480 | case ID_ROTA: |
---|
1481 | for ( i = 0; i < 3; i++ ) |
---|
1482 | tmap.rotate.val[ i ] = getF4(); |
---|
1483 | tmap.rotate.eindex = getVX(); |
---|
1484 | break; |
---|
1485 | |
---|
1486 | case ID_FALL: |
---|
1487 | tmap.fall_type = getU2(); |
---|
1488 | for ( i = 0; i < 3; i++ ) |
---|
1489 | tmap.falloff.val[ i ] = getF4(); |
---|
1490 | tmap.falloff.eindex = getVX(); |
---|
1491 | break; |
---|
1492 | |
---|
1493 | case ID_OREF: |
---|
1494 | tmap.ref_object = getS0(); |
---|
1495 | break; |
---|
1496 | |
---|
1497 | case ID_CSYS: |
---|
1498 | tmap.coord_sys = getU2(); |
---|
1499 | break; |
---|
1500 | |
---|
1501 | default: |
---|
1502 | break; |
---|
1503 | } |
---|
1504 | |
---|
1505 | /* error while reading the current subchunk? */ |
---|
1506 | |
---|
1507 | rlen = flen; |
---|
1508 | if ( rlen < 0 || rlen > sz ) return 0; |
---|
1509 | |
---|
1510 | /* skip unread parts of the current subchunk */ |
---|
1511 | |
---|
1512 | if ( rlen < sz ) |
---|
1513 | is->seekg(sz - rlen, ios_base::cur ); |
---|
1514 | |
---|
1515 | /* end of the TMAP subchunk? */ |
---|
1516 | int fpos = is->tellg(); |
---|
1517 | if ( fpos == -1 ) break; |
---|
1518 | if ( tmapsz + pos <= fpos ) break; |
---|
1519 | |
---|
1520 | // if ( tmapsz + pos <= is->tellg() ) |
---|
1521 | // break; |
---|
1522 | |
---|
1523 | /* get the next subchunk header */ |
---|
1524 | |
---|
1525 | flen = 0; |
---|
1526 | id = getU4(); |
---|
1527 | sz = getU2(); |
---|
1528 | if ( 6 != flen ) return 0; |
---|
1529 | }; |
---|
1530 | |
---|
1531 | int g = is->tellg(); |
---|
1532 | flen = g - pos; |
---|
1533 | return 1; |
---|
1534 | } |
---|
1535 | |
---|
1536 | /*====================================================================== |
---|
1537 | lwGetImageMap() |
---|
1538 | |
---|
1539 | Read an lwImageMap from a SURF.BLOK in an LWO2 file. |
---|
1540 | ====================================================================== */ |
---|
1541 | |
---|
1542 | lwImageMap *lwReader::lwGetImageMap( int rsz, lwTexture &tex ) |
---|
1543 | { |
---|
1544 | unsigned int id; |
---|
1545 | unsigned short sz; |
---|
1546 | int rlen, pos; |
---|
1547 | |
---|
1548 | pos = is->tellg(); |
---|
1549 | id = getU4(); |
---|
1550 | sz = getU2(); |
---|
1551 | if ( 0 > flen ) return 0; |
---|
1552 | |
---|
1553 | lwImageMap *imap = new lwImageMap; |
---|
1554 | if (!imap) return NULL; |
---|
1555 | |
---|
1556 | for (;;) { |
---|
1557 | sz += sz & 1; |
---|
1558 | flen = 0; |
---|
1559 | |
---|
1560 | switch ( id ) { |
---|
1561 | case ID_TMAP: |
---|
1562 | if ( !lwGetTMap( sz, tex.tmap )) return 0; |
---|
1563 | break; |
---|
1564 | |
---|
1565 | case ID_PROJ: |
---|
1566 | imap->projection = getU2(); |
---|
1567 | break; |
---|
1568 | |
---|
1569 | case ID_VMAP: |
---|
1570 | imap->vmap_name = getS0(); |
---|
1571 | break; |
---|
1572 | |
---|
1573 | case ID_AXIS: |
---|
1574 | imap->axis = getU2(); |
---|
1575 | break; |
---|
1576 | |
---|
1577 | case ID_IMAG: |
---|
1578 | imap->cindex = getVX(); |
---|
1579 | break; |
---|
1580 | |
---|
1581 | case ID_WRAP: |
---|
1582 | imap->wrapw_type = getU2(); |
---|
1583 | imap->wraph_type = getU2(); |
---|
1584 | break; |
---|
1585 | |
---|
1586 | case ID_WRPW: |
---|
1587 | imap->wrapw.val = getF4(); |
---|
1588 | imap->wrapw.eindex = getVX(); |
---|
1589 | break; |
---|
1590 | |
---|
1591 | case ID_WRPH: |
---|
1592 | imap->wraph.val = getF4(); |
---|
1593 | imap->wraph.eindex = getVX(); |
---|
1594 | break; |
---|
1595 | |
---|
1596 | case ID_AAST: |
---|
1597 | imap->aas_flags = getU2(); |
---|
1598 | imap->aa_strength = getF4(); |
---|
1599 | break; |
---|
1600 | |
---|
1601 | case ID_PIXB: |
---|
1602 | imap->pblend = getU2(); |
---|
1603 | break; |
---|
1604 | |
---|
1605 | case ID_STCK: |
---|
1606 | imap->stck.val = getF4(); |
---|
1607 | imap->stck.eindex = getVX(); |
---|
1608 | break; |
---|
1609 | |
---|
1610 | case ID_TAMP: |
---|
1611 | imap->amplitude.val = getF4(); |
---|
1612 | imap->amplitude.eindex = getVX(); |
---|
1613 | break; |
---|
1614 | |
---|
1615 | default: |
---|
1616 | break; |
---|
1617 | } |
---|
1618 | |
---|
1619 | /* error while reading the current subchunk? */ |
---|
1620 | |
---|
1621 | rlen = flen; |
---|
1622 | if ( rlen < 0 || rlen > sz ) return 0; |
---|
1623 | |
---|
1624 | /* skip unread parts of the current subchunk */ |
---|
1625 | |
---|
1626 | if ( rlen < sz ) |
---|
1627 | is->seekg(sz - rlen, ios_base::cur ); |
---|
1628 | |
---|
1629 | /* end of the image map? */ |
---|
1630 | |
---|
1631 | int fpos = is->tellg(); |
---|
1632 | if ( fpos == -1 ) break; |
---|
1633 | if ( rsz + pos <= fpos ) break; |
---|
1634 | |
---|
1635 | // if ( rsz + pos <= is->tellg() ) |
---|
1636 | // break; |
---|
1637 | |
---|
1638 | /* get the next subchunk header */ |
---|
1639 | |
---|
1640 | flen = 0; |
---|
1641 | id = getU4(); |
---|
1642 | sz = getU2(); |
---|
1643 | if ( 6 != flen ) return 0; |
---|
1644 | }; |
---|
1645 | |
---|
1646 | int g = is->tellg(); |
---|
1647 | flen = g - pos; |
---|
1648 | return imap; |
---|
1649 | } |
---|
1650 | |
---|
1651 | |
---|
1652 | /* |
---|
1653 | ====================================================================== |
---|
1654 | lwGetProcedural() |
---|
1655 | |
---|
1656 | Read an lwProcedural from a SURF.BLOK in an LWO2 file. |
---|
1657 | ====================================================================== |
---|
1658 | */ |
---|
1659 | |
---|
1660 | lwProcedural *lwReader::lwGetProcedural( int rsz, lwTexture &tex ) |
---|
1661 | { |
---|
1662 | unsigned int id; |
---|
1663 | unsigned short sz; |
---|
1664 | int rlen, pos, fpos; |
---|
1665 | |
---|
1666 | pos = is->tellg(); |
---|
1667 | id = getU4(); |
---|
1668 | sz = getU2(); |
---|
1669 | if ( 0 > flen ) return 0; |
---|
1670 | |
---|
1671 | lwProcedural *proc = new lwProcedural; |
---|
1672 | if (!proc) return NULL; |
---|
1673 | |
---|
1674 | for (;;) { |
---|
1675 | sz += sz & 1; |
---|
1676 | flen = 0; |
---|
1677 | |
---|
1678 | switch ( id ) { |
---|
1679 | case ID_TMAP: |
---|
1680 | if ( !lwGetTMap( sz, tex.tmap )) return 0; |
---|
1681 | break; |
---|
1682 | |
---|
1683 | case ID_AXIS: |
---|
1684 | proc->axis = getU2(); |
---|
1685 | break; |
---|
1686 | |
---|
1687 | case ID_VALU: |
---|
1688 | proc->value[ 0 ] = getF4(); |
---|
1689 | if ( sz >= 8 ) proc->value[ 1 ] = getF4(); |
---|
1690 | if ( sz >= 12 ) proc->value[ 2 ] = getF4(); |
---|
1691 | break; |
---|
1692 | |
---|
1693 | case ID_FUNC: |
---|
1694 | proc->name = getS0(); |
---|
1695 | rlen = flen; |
---|
1696 | proc->data = getbytes( sz - rlen ); |
---|
1697 | break; |
---|
1698 | |
---|
1699 | default: |
---|
1700 | break; |
---|
1701 | } |
---|
1702 | |
---|
1703 | /* error while reading the current subchunk? */ |
---|
1704 | |
---|
1705 | rlen = flen; |
---|
1706 | if ( rlen < 0 || rlen > sz ) return 0; |
---|
1707 | |
---|
1708 | /* skip unread parts of the current subchunk */ |
---|
1709 | |
---|
1710 | if ( rlen < sz ) |
---|
1711 | is->seekg(sz - rlen, ios_base::cur ); |
---|
1712 | |
---|
1713 | /* end of the procedural block? */ |
---|
1714 | |
---|
1715 | fpos = is->tellg(); |
---|
1716 | |
---|
1717 | if (fpos == -1) |
---|
1718 | { |
---|
1719 | flen = -pos; |
---|
1720 | return proc; |
---|
1721 | } |
---|
1722 | |
---|
1723 | if ( rsz + pos <= fpos ) |
---|
1724 | break; |
---|
1725 | |
---|
1726 | // if ( rsz + pos <= is->tellg()) |
---|
1727 | // break; |
---|
1728 | |
---|
1729 | /* get the next subchunk header */ |
---|
1730 | |
---|
1731 | flen = 0; |
---|
1732 | id = getU4(); |
---|
1733 | sz = getU2(); |
---|
1734 | if ( 6 != flen ) return 0; |
---|
1735 | }; |
---|
1736 | |
---|
1737 | int g = is->tellg(); |
---|
1738 | flen = g - pos; |
---|
1739 | return proc; |
---|
1740 | } |
---|
1741 | |
---|
1742 | |
---|
1743 | /* |
---|
1744 | ====================================================================== |
---|
1745 | lwGetGradient() |
---|
1746 | |
---|
1747 | Read an lwGradient from a SURF.BLOK in an LWO2 file. |
---|
1748 | ====================================================================== */ |
---|
1749 | |
---|
1750 | lwGradient *lwReader::lwGetGradient( int rsz, lwTexture &tex ) |
---|
1751 | { |
---|
1752 | unsigned int id; |
---|
1753 | unsigned short sz; |
---|
1754 | int rlen, pos, i, j, nkeys; |
---|
1755 | |
---|
1756 | pos = is->tellg(); |
---|
1757 | id = getU4(); |
---|
1758 | sz = getU2(); |
---|
1759 | if ( 0 > flen ) return 0; |
---|
1760 | |
---|
1761 | lwGradient *grad = new lwGradient; |
---|
1762 | if (!grad) return NULL; |
---|
1763 | |
---|
1764 | for (;;) { |
---|
1765 | sz += sz & 1; |
---|
1766 | flen = 0; |
---|
1767 | |
---|
1768 | switch ( id ) { |
---|
1769 | case ID_TMAP: |
---|
1770 | if ( !lwGetTMap( sz, tex.tmap )) return 0; |
---|
1771 | break; |
---|
1772 | |
---|
1773 | case ID_PNAM: |
---|
1774 | grad->paramname = getS0(); |
---|
1775 | break; |
---|
1776 | |
---|
1777 | case ID_INAM: |
---|
1778 | grad->itemname = getS0(); |
---|
1779 | break; |
---|
1780 | |
---|
1781 | case ID_GRST: |
---|
1782 | grad->start = getF4(); |
---|
1783 | break; |
---|
1784 | |
---|
1785 | case ID_GREN: |
---|
1786 | grad->end = getF4(); |
---|
1787 | break; |
---|
1788 | |
---|
1789 | case ID_GRPT: |
---|
1790 | grad->repeat = getU2(); |
---|
1791 | break; |
---|
1792 | |
---|
1793 | case ID_FKEY: |
---|
1794 | nkeys = sz / sizeof( lwGradKey ); |
---|
1795 | grad->key = (lwGradKey *)malloc(nkeys * sizeof(lwGradKey)); |
---|
1796 | if ( !grad->key ) return 0; |
---|
1797 | for ( i = 0; i < nkeys; i++ ) { |
---|
1798 | grad->key[ i ].value = getF4(); |
---|
1799 | for ( j = 0; j < 4; j++ ) |
---|
1800 | grad->key[ i ].rgba[ j ] = getF4(); |
---|
1801 | } |
---|
1802 | break; |
---|
1803 | |
---|
1804 | case ID_IKEY: |
---|
1805 | nkeys = sz / 2; |
---|
1806 | grad->ikey = (short *)malloc(nkeys * sizeof(short)); |
---|
1807 | if ( !grad->ikey ) return 0; |
---|
1808 | for ( i = 0; i < nkeys; i++ ) |
---|
1809 | grad->ikey[ i ] = getU2(); |
---|
1810 | break; |
---|
1811 | |
---|
1812 | default: |
---|
1813 | break; |
---|
1814 | } |
---|
1815 | |
---|
1816 | /* error while reading the current subchunk? */ |
---|
1817 | |
---|
1818 | rlen = flen; |
---|
1819 | if ( rlen < 0 || rlen > sz ) return 0; |
---|
1820 | |
---|
1821 | /* skip unread parts of the current subchunk */ |
---|
1822 | |
---|
1823 | if ( rlen < sz ) |
---|
1824 | is->seekg(sz - rlen, ios_base::cur ); |
---|
1825 | |
---|
1826 | /* end of the gradient? */ |
---|
1827 | |
---|
1828 | int fpos = is->tellg(); |
---|
1829 | if ( fpos == -1 ) break; |
---|
1830 | if ( rsz + pos <= fpos ) break; |
---|
1831 | |
---|
1832 | // if ( rsz + pos <= is->tellg() ) |
---|
1833 | // break; |
---|
1834 | |
---|
1835 | /* get the next subchunk header */ |
---|
1836 | |
---|
1837 | flen = 0; |
---|
1838 | id = getU4(); |
---|
1839 | sz = getU2(); |
---|
1840 | if ( 6 != flen ) return 0; |
---|
1841 | }; |
---|
1842 | |
---|
1843 | int g = is->tellg(); |
---|
1844 | flen = g - pos; |
---|
1845 | return grad; |
---|
1846 | } |
---|
1847 | |
---|
1848 | |
---|
1849 | /* |
---|
1850 | ====================================================================== |
---|
1851 | lwGetTexture() |
---|
1852 | |
---|
1853 | Read an lwTexture from a SURF.BLOK in an LWO2 file. |
---|
1854 | ====================================================================== */ |
---|
1855 | |
---|
1856 | lwTexture *lwReader::lwGetTexture( int bloksz, unsigned int type ) |
---|
1857 | { |
---|
1858 | lwTexture *tex; |
---|
1859 | unsigned short sz; |
---|
1860 | bool ok; |
---|
1861 | |
---|
1862 | tex = new lwTexture; |
---|
1863 | if ( !tex ) return NULL; |
---|
1864 | |
---|
1865 | tex->type = type; |
---|
1866 | |
---|
1867 | sz = getU2(); |
---|
1868 | if ( !lwGetTHeader( sz, *tex )) { |
---|
1869 | delete tex; |
---|
1870 | return NULL; |
---|
1871 | } |
---|
1872 | |
---|
1873 | sz = bloksz - sz - 6; |
---|
1874 | switch ( type ) { |
---|
1875 | case ID_IMAP: |
---|
1876 | tex->param.imap = lwGetImageMap( sz, *tex ); |
---|
1877 | ok = tex->param.imap!=0; |
---|
1878 | break; |
---|
1879 | case ID_PROC: |
---|
1880 | tex->param.proc = lwGetProcedural( sz, *tex ); |
---|
1881 | ok = tex->param.proc!=0; |
---|
1882 | break; |
---|
1883 | case ID_GRAD: |
---|
1884 | tex->param.grad = lwGetGradient( sz, *tex ); |
---|
1885 | ok = tex->param.grad!=0; |
---|
1886 | break; |
---|
1887 | default: |
---|
1888 | ok = !is->seekg(sz, ios_base::cur ); |
---|
1889 | } |
---|
1890 | |
---|
1891 | if ( !ok ) |
---|
1892 | { |
---|
1893 | delete tex; |
---|
1894 | return NULL; |
---|
1895 | } |
---|
1896 | |
---|
1897 | flen = bloksz; |
---|
1898 | return tex; |
---|
1899 | } |
---|
1900 | |
---|
1901 | /* |
---|
1902 | ====================================================================== |
---|
1903 | lwGetShader() |
---|
1904 | |
---|
1905 | Read a shader record from a SURF.BLOK in an LWO2 file. |
---|
1906 | ====================================================================== */ |
---|
1907 | |
---|
1908 | lwPlugin *lwReader::lwGetShader( int bloksz ) |
---|
1909 | { |
---|
1910 | lwPlugin *shdr; |
---|
1911 | unsigned int id; |
---|
1912 | unsigned short sz; |
---|
1913 | int hsz, rlen, pos; |
---|
1914 | int g = 0; |
---|
1915 | |
---|
1916 | shdr = new lwPlugin; |
---|
1917 | if ( !shdr ) return NULL; |
---|
1918 | |
---|
1919 | pos = is->tellg(); |
---|
1920 | flen = 0; |
---|
1921 | hsz = getU2(); |
---|
1922 | shdr->ord = getS0(); |
---|
1923 | id = getU4(); |
---|
1924 | sz = getU2(); |
---|
1925 | if ( 0 > flen ) goto Fail; |
---|
1926 | |
---|
1927 | while ( hsz > 0 ) |
---|
1928 | { |
---|
1929 | sz += sz & 1; |
---|
1930 | hsz -= sz; |
---|
1931 | if ( id == ID_ENAB ) { |
---|
1932 | shdr->flags = getU2(); |
---|
1933 | break; |
---|
1934 | } |
---|
1935 | else { |
---|
1936 | is->seekg(sz, ios_base::cur ); |
---|
1937 | id = getU4(); |
---|
1938 | sz = getU2(); |
---|
1939 | } |
---|
1940 | } |
---|
1941 | |
---|
1942 | id = getU4(); |
---|
1943 | sz = getU2(); |
---|
1944 | if ( 0 > flen ) goto Fail; |
---|
1945 | |
---|
1946 | for (;;) |
---|
1947 | { |
---|
1948 | sz += sz & 1; |
---|
1949 | flen = 0; |
---|
1950 | |
---|
1951 | switch ( id ) { |
---|
1952 | case ID_FUNC: |
---|
1953 | shdr->name = getS0(); |
---|
1954 | rlen = flen; |
---|
1955 | shdr->data = getbytes( sz - rlen ); |
---|
1956 | break; |
---|
1957 | |
---|
1958 | default: |
---|
1959 | break; |
---|
1960 | } |
---|
1961 | |
---|
1962 | /* error while reading the current subchunk? */ |
---|
1963 | |
---|
1964 | rlen = flen; |
---|
1965 | if ( rlen < 0 || rlen > sz ) goto Fail; |
---|
1966 | |
---|
1967 | /* skip unread parts of the current subchunk */ |
---|
1968 | |
---|
1969 | if ( rlen < sz ) |
---|
1970 | is->seekg(sz - rlen, ios_base::cur ); |
---|
1971 | |
---|
1972 | /* end of the shader block? */ |
---|
1973 | |
---|
1974 | int fpos = is->tellg(); |
---|
1975 | if ( fpos == -1 ) break; |
---|
1976 | if ( bloksz + pos <= fpos ) break; |
---|
1977 | |
---|
1978 | |
---|
1979 | // if ( bloksz + pos <= is->tellg() ) |
---|
1980 | // break; |
---|
1981 | |
---|
1982 | /* get the next subchunk header */ |
---|
1983 | |
---|
1984 | flen = 0; |
---|
1985 | id = getU4(); |
---|
1986 | sz = getU2(); |
---|
1987 | if ( 6 != flen ) goto Fail; |
---|
1988 | }; |
---|
1989 | |
---|
1990 | g = is->tellg(); |
---|
1991 | flen = g - pos; |
---|
1992 | return shdr; |
---|
1993 | |
---|
1994 | Fail: |
---|
1995 | delete shdr; |
---|
1996 | return NULL; |
---|
1997 | } |
---|
1998 | |
---|
1999 | /*====================================================================== |
---|
2000 | add_clip() |
---|
2001 | |
---|
2002 | Add a clip to the clip list. Used to store the contents of an RIMG or |
---|
2003 | TIMG surface subchunk. |
---|
2004 | ======================================================================*/ |
---|
2005 | |
---|
2006 | int lwReader::add_clip( char *s, vclips &clips ) |
---|
2007 | { |
---|
2008 | lwClip *clip; |
---|
2009 | char *p; |
---|
2010 | |
---|
2011 | clip = new lwClip; |
---|
2012 | if ( !clip ) return 0; |
---|
2013 | |
---|
2014 | if ( p = strstr( s, "(sequence)" )) |
---|
2015 | { |
---|
2016 | p[ -1 ] = 0; |
---|
2017 | clip->type = ID_ISEQ; |
---|
2018 | lwClipSeq *seq = new lwClipSeq; |
---|
2019 | seq->prefix = s; |
---|
2020 | seq->digits = 3; |
---|
2021 | clip->source.seq = seq; |
---|
2022 | } |
---|
2023 | else |
---|
2024 | { |
---|
2025 | clip->type = ID_STIL; |
---|
2026 | lwClipStill *still = new lwClipStill; |
---|
2027 | still->name = s; |
---|
2028 | clip->source.still = still; |
---|
2029 | } |
---|
2030 | |
---|
2031 | clips.push_back( clip ); |
---|
2032 | clip->index = clips.size()-1; |
---|
2033 | |
---|
2034 | return clip->index; |
---|
2035 | } |
---|
2036 | |
---|
2037 | |
---|
2038 | /*====================================================================== |
---|
2039 | add_tvel() |
---|
2040 | |
---|
2041 | Add a triple of envelopes to simulate the old texture velocity |
---|
2042 | parameters. |
---|
2043 | ======================================================================*/ |
---|
2044 | |
---|
2045 | int lwReader::add_tvel( float pos[], float vel[], venvelopes &envelopes ) |
---|
2046 | { |
---|
2047 | lwEnvelope *env; |
---|
2048 | lwKey *key0, *key1; |
---|
2049 | int i; |
---|
2050 | |
---|
2051 | for ( i = 0; i < 3; i++ ) |
---|
2052 | { |
---|
2053 | env = new lwEnvelope; |
---|
2054 | key0 = new lwKey(0.0f, pos[ i ]); |
---|
2055 | key1 = new lwKey(1.0f, pos[ i ] + vel[ i ] * 30.0f); // 30.0f == NTSC related ? |
---|
2056 | |
---|
2057 | key0->shape = key1->shape = ID_LINE; |
---|
2058 | |
---|
2059 | env->keys.push_back( key0 ); |
---|
2060 | env->keys.push_back( key1 ); |
---|
2061 | |
---|
2062 | env->type = 0x0301 + i; |
---|
2063 | env->name = (char *)malloc(11); |
---|
2064 | if ( env->name ) |
---|
2065 | { |
---|
2066 | strcpy( env->name, "Position.X" ); |
---|
2067 | env->name[ 9 ] += i; |
---|
2068 | } |
---|
2069 | |
---|
2070 | env->behavior[ 0 ] = BEH_LINEAR; |
---|
2071 | env->behavior[ 1 ] = BEH_LINEAR; |
---|
2072 | |
---|
2073 | envelopes.push_back( env ); |
---|
2074 | env->index = envelopes.size()-1; |
---|
2075 | } |
---|
2076 | return env->index - 2; |
---|
2077 | } |
---|
2078 | |
---|
2079 | |
---|
2080 | /*====================================================================== |
---|
2081 | get_texture() |
---|
2082 | |
---|
2083 | Create a new texture for BTEX, CTEX, etc. subchunks. |
---|
2084 | ======================================================================*/ |
---|
2085 | |
---|
2086 | lwTexture *lwReader::get_texture( char *s ) |
---|
2087 | { |
---|
2088 | lwTexture *tex = new lwTexture; |
---|
2089 | if ( !tex ) return NULL; |
---|
2090 | |
---|
2091 | if ( strstr( s, "Image Map" )) |
---|
2092 | { |
---|
2093 | tex->type = ID_IMAP; |
---|
2094 | lwImageMap *imap = new lwImageMap; |
---|
2095 | tex->param.imap = imap; |
---|
2096 | if ( strstr( s, "Planar" )) imap->projection = 0; |
---|
2097 | else if ( strstr( s, "Cylindrical" )) imap->projection = 1; |
---|
2098 | else if ( strstr( s, "Spherical" )) imap->projection = 2; |
---|
2099 | else if ( strstr( s, "Cubic" )) imap->projection = 3; |
---|
2100 | else if ( strstr( s, "Front" )) imap->projection = 4; |
---|
2101 | imap->aa_strength = 1.0f; |
---|
2102 | imap->amplitude.val = 1.0f; |
---|
2103 | free(s); |
---|
2104 | } |
---|
2105 | else |
---|
2106 | { |
---|
2107 | tex->type = ID_PROC; |
---|
2108 | lwProcedural *proc = new lwProcedural; |
---|
2109 | tex->param.proc = proc; |
---|
2110 | proc->name = s; |
---|
2111 | } |
---|
2112 | return tex; |
---|
2113 | } |
---|
2114 | |
---|
2115 | lwSurface *lwReader::lwGetLWOBSurface( lwObject *obj ) |
---|
2116 | { |
---|
2117 | lwTexture *tex = 0; |
---|
2118 | lwPlugin *shdr = 0; |
---|
2119 | char *s; |
---|
2120 | float v[ 3 ]; |
---|
2121 | unsigned int flags; |
---|
2122 | unsigned short sz; |
---|
2123 | int rlen, i; |
---|
2124 | |
---|
2125 | long filepos = is->tellg(); |
---|
2126 | long chunkstart = filepos; |
---|
2127 | long chunkend = chunkstart + chunksize; |
---|
2128 | |
---|
2129 | /* allocate the Surface structure */ |
---|
2130 | |
---|
2131 | lwSurface *surf = new lwSurface; |
---|
2132 | if ( !surf ) return NULL; |
---|
2133 | |
---|
2134 | /* name */ |
---|
2135 | |
---|
2136 | surf->name = getS0(); |
---|
2137 | |
---|
2138 | /* process subchunks as they're encountered */ |
---|
2139 | filepos = is->tellg(); |
---|
2140 | if (filepos == -1) return surf; |
---|
2141 | if ( filepos > chunkend ) return surf; // error: read too much |
---|
2142 | |
---|
2143 | while( filepos < chunkend ) |
---|
2144 | { |
---|
2145 | currentchunkid = getU4(); |
---|
2146 | sz = getU2(); |
---|
2147 | sz += sz & 1; |
---|
2148 | flen = 0; |
---|
2149 | |
---|
2150 | switch ( currentchunkid ) |
---|
2151 | { |
---|
2152 | case ID_COLR: |
---|
2153 | surf->color.rgb[ 0 ] = getU1() / 255.0f; |
---|
2154 | surf->color.rgb[ 1 ] = getU1() / 255.0f; |
---|
2155 | surf->color.rgb[ 2 ] = getU1() / 255.0f; |
---|
2156 | break; |
---|
2157 | |
---|
2158 | case ID_FLAG: |
---|
2159 | flags = getU2(); |
---|
2160 | if ( flags & 4 ) surf->smooth = 1.56207f; |
---|
2161 | if ( flags & 8 ) surf->color_hilite.val = 1.0f; |
---|
2162 | if ( flags & 16 ) surf->color_filter.val = 1.0f; |
---|
2163 | if ( flags & 128 ) surf->dif_sharp.val = 0.5f; |
---|
2164 | if ( flags & 256 ) surf->sideflags = 3; |
---|
2165 | if ( flags & 512 ) surf->add_trans.val = 1.0f; |
---|
2166 | break; |
---|
2167 | |
---|
2168 | case ID_LUMI: |
---|
2169 | surf->luminosity.val = getI2() / 256.0f; |
---|
2170 | break; |
---|
2171 | |
---|
2172 | case ID_VLUM: |
---|
2173 | surf->luminosity.val = getF4(); |
---|
2174 | break; |
---|
2175 | |
---|
2176 | case ID_DIFF: |
---|
2177 | surf->diffuse.val = getI2() / 256.0f; |
---|
2178 | break; |
---|
2179 | |
---|
2180 | case ID_VDIF: |
---|
2181 | surf->diffuse.val = getF4(); |
---|
2182 | break; |
---|
2183 | |
---|
2184 | case ID_SPEC: |
---|
2185 | surf->specularity.val = getI2() / 256.0f; |
---|
2186 | break; |
---|
2187 | |
---|
2188 | case ID_VSPC: |
---|
2189 | surf->specularity.val = getF4(); |
---|
2190 | break; |
---|
2191 | |
---|
2192 | case ID_GLOS: |
---|
2193 | surf->glossiness.val = (float)log((double)getU2()) / 20.7944f; |
---|
2194 | break; |
---|
2195 | |
---|
2196 | case ID_SMAN: |
---|
2197 | surf->smooth = getF4(); |
---|
2198 | break; |
---|
2199 | |
---|
2200 | case ID_REFL: |
---|
2201 | surf->reflection.val.val = getI2() / 256.0f; |
---|
2202 | break; |
---|
2203 | |
---|
2204 | case ID_RFLT: |
---|
2205 | surf->reflection.options = getU2(); |
---|
2206 | break; |
---|
2207 | |
---|
2208 | case ID_RIMG: |
---|
2209 | s = getS0(); |
---|
2210 | surf->reflection.cindex = add_clip( s, obj->clips ); |
---|
2211 | surf->reflection.options = 3; |
---|
2212 | break; |
---|
2213 | |
---|
2214 | case ID_RSAN: |
---|
2215 | surf->reflection.seam_angle = getF4(); |
---|
2216 | break; |
---|
2217 | |
---|
2218 | case ID_TRAN: |
---|
2219 | surf->transparency.val.val = getI2() / 256.0f; |
---|
2220 | break; |
---|
2221 | |
---|
2222 | case ID_RIND: |
---|
2223 | surf->eta.val = getF4(); |
---|
2224 | break; |
---|
2225 | |
---|
2226 | case ID_BTEX: |
---|
2227 | s = getbytes( sz ); |
---|
2228 | tex = get_texture( s ); |
---|
2229 | surf->bump.textures.push_back( tex ); |
---|
2230 | break; |
---|
2231 | |
---|
2232 | case ID_CTEX: |
---|
2233 | s = getbytes( sz ); |
---|
2234 | tex = get_texture( s ); |
---|
2235 | surf->color.textures.push_back( tex ); |
---|
2236 | break; |
---|
2237 | |
---|
2238 | case ID_DTEX: |
---|
2239 | s = getbytes( sz ); |
---|
2240 | tex = get_texture( s ); |
---|
2241 | surf->diffuse.textures.push_back( tex ); |
---|
2242 | break; |
---|
2243 | |
---|
2244 | case ID_LTEX: |
---|
2245 | s = getbytes( sz ); |
---|
2246 | tex = get_texture( s ); |
---|
2247 | surf->luminosity.textures.push_back( tex ); |
---|
2248 | break; |
---|
2249 | |
---|
2250 | case ID_RTEX: |
---|
2251 | s = getbytes( sz ); |
---|
2252 | tex = get_texture( s ); |
---|
2253 | surf->reflection.val.textures.push_back( tex ); |
---|
2254 | break; |
---|
2255 | |
---|
2256 | case ID_STEX: |
---|
2257 | s = getbytes( sz ); |
---|
2258 | tex = get_texture( s ); |
---|
2259 | surf->specularity.textures.push_back( tex ); |
---|
2260 | break; |
---|
2261 | |
---|
2262 | case ID_TTEX: |
---|
2263 | s = getbytes( sz ); |
---|
2264 | tex = get_texture( s ); |
---|
2265 | surf->transparency.val.textures.push_back( tex ); |
---|
2266 | break; |
---|
2267 | |
---|
2268 | case ID_TFLG: |
---|
2269 | flags = getU2(); |
---|
2270 | |
---|
2271 | if ( flags & 1 ) i = 0; |
---|
2272 | if ( flags & 2 ) i = 1; |
---|
2273 | if ( flags & 4 ) i = 2; |
---|
2274 | tex->axis = i; |
---|
2275 | if ( tex->type == ID_IMAP ) |
---|
2276 | { |
---|
2277 | tex->param.imap->axis = i; |
---|
2278 | if ( flags & 32 ) |
---|
2279 | tex->param.imap->pblend = 1; |
---|
2280 | if ( flags & 64 ) |
---|
2281 | { |
---|
2282 | tex->param.imap->aa_strength = 1.0f; |
---|
2283 | tex->param.imap->aas_flags = 1; |
---|
2284 | } |
---|
2285 | } |
---|
2286 | if ( tex->type == ID_PROC ) |
---|
2287 | tex->param.proc->axis = i; |
---|
2288 | |
---|
2289 | if ( flags & 8 ) tex->tmap.coord_sys = 1; |
---|
2290 | if ( flags & 16 ) tex->negative = 1; |
---|
2291 | break; |
---|
2292 | |
---|
2293 | case ID_TSIZ: |
---|
2294 | for ( i = 0; i < 3; i++ ) |
---|
2295 | tex->tmap.size.val[ i ] = getF4(); |
---|
2296 | break; |
---|
2297 | |
---|
2298 | case ID_TCTR: |
---|
2299 | for ( i = 0; i < 3; i++ ) |
---|
2300 | tex->tmap.center.val[ i ] = getF4(); |
---|
2301 | break; |
---|
2302 | |
---|
2303 | case ID_TFAL: |
---|
2304 | for ( i = 0; i < 3; i++ ) |
---|
2305 | tex->tmap.falloff.val[ i ] = getF4(); |
---|
2306 | break; |
---|
2307 | |
---|
2308 | case ID_TVEL: |
---|
2309 | for ( i = 0; i < 3; i++ ) |
---|
2310 | v[ i ] = getF4(); |
---|
2311 | tex->tmap.center.eindex = add_tvel( tex->tmap.center.val, v, obj->envelopes ); |
---|
2312 | break; |
---|
2313 | |
---|
2314 | case ID_TCLR: |
---|
2315 | if ( tex->type == ID_PROC ) |
---|
2316 | for ( i = 0; i < 3; i++ ) |
---|
2317 | tex->param.proc->value[ i ] = getU1() / 255.0f; |
---|
2318 | break; |
---|
2319 | |
---|
2320 | case ID_TVAL: |
---|
2321 | if ( tex->type == ID_PROC ) |
---|
2322 | tex->param.proc->value[ 0 ] = getI2() / 256.0f; |
---|
2323 | break; |
---|
2324 | |
---|
2325 | case ID_TAMP: |
---|
2326 | if ( tex->type == ID_IMAP ) |
---|
2327 | tex->param.imap->amplitude.val = getF4(); |
---|
2328 | break; |
---|
2329 | |
---|
2330 | case ID_TIMG: |
---|
2331 | if ( tex->type == ID_IMAP ) |
---|
2332 | { |
---|
2333 | s = getS0(); |
---|
2334 | tex->param.imap->cindex = add_clip( s, obj->clips ); |
---|
2335 | } |
---|
2336 | break; |
---|
2337 | |
---|
2338 | case ID_TAAS: |
---|
2339 | if ( tex->type == ID_IMAP ) |
---|
2340 | { |
---|
2341 | tex->param.imap->aa_strength = getF4(); |
---|
2342 | tex->param.imap->aas_flags = 1; |
---|
2343 | } |
---|
2344 | break; |
---|
2345 | |
---|
2346 | case ID_TREF: |
---|
2347 | tex->tmap.ref_object = getbytes( sz ); |
---|
2348 | break; |
---|
2349 | |
---|
2350 | case ID_TOPC: |
---|
2351 | tex->opacity.val = getF4(); |
---|
2352 | break; |
---|
2353 | |
---|
2354 | case ID_TFP0: |
---|
2355 | if ( tex->type == ID_IMAP ) |
---|
2356 | tex->param.imap->wrapw.val = getF4(); |
---|
2357 | break; |
---|
2358 | |
---|
2359 | case ID_TFP1: |
---|
2360 | if ( tex->type == ID_IMAP ) |
---|
2361 | tex->param.imap->wraph.val = getF4(); |
---|
2362 | break; |
---|
2363 | |
---|
2364 | case ID_SHDR: |
---|
2365 | shdr = new lwPlugin; |
---|
2366 | if ( !shdr ) goto Fail; |
---|
2367 | shdr->name = getbytes( sz ); |
---|
2368 | surf->shaders.push_back( shdr ); |
---|
2369 | break; |
---|
2370 | |
---|
2371 | case ID_SDAT: |
---|
2372 | shdr->data = getbytes( sz ); |
---|
2373 | break; |
---|
2374 | default: |
---|
2375 | break; |
---|
2376 | } |
---|
2377 | |
---|
2378 | /* error while reading current subchunk? */ |
---|
2379 | |
---|
2380 | rlen = flen; |
---|
2381 | if ( rlen < 0 || rlen > sz ) goto Fail; |
---|
2382 | |
---|
2383 | /* skip unread parts of the current subchunk */ |
---|
2384 | |
---|
2385 | if ( rlen < sz ) |
---|
2386 | is->seekg(sz - rlen, ios_base::cur ); |
---|
2387 | |
---|
2388 | /* end of the SURF chunk? */ |
---|
2389 | |
---|
2390 | filepos = is->tellg(); |
---|
2391 | if ( filepos == -1 ) break; // end of file ? |
---|
2392 | if ( filepos > chunkend ) // error: read too much |
---|
2393 | { |
---|
2394 | is->seekg(chunkend, ios_base::beg ); |
---|
2395 | break; |
---|
2396 | } |
---|
2397 | } |
---|
2398 | return surf; |
---|
2399 | Fail: |
---|
2400 | if ( surf ) delete surf; |
---|
2401 | return NULL; |
---|
2402 | } |
---|
2403 | |
---|
2404 | |
---|
2405 | /* |
---|
2406 | ====================================================================== |
---|
2407 | lwGetSurface() |
---|
2408 | |
---|
2409 | Read an lwSurface from an LWO2 file. |
---|
2410 | ====================================================================== */ |
---|
2411 | |
---|
2412 | lwSurface *lwReader::lwGetSurface() |
---|
2413 | { |
---|
2414 | lwSurface *surf; |
---|
2415 | lwTexture *tex; |
---|
2416 | lwPlugin *shdr; |
---|
2417 | unsigned int id, type; |
---|
2418 | unsigned short sz; |
---|
2419 | unsigned int pos, rlen, fpos; |
---|
2420 | |
---|
2421 | /* allocate the Surface structure */ |
---|
2422 | |
---|
2423 | surf = new lwSurface; |
---|
2424 | if ( !surf ) goto Fail; |
---|
2425 | |
---|
2426 | /* remember where we started */ |
---|
2427 | |
---|
2428 | flen = 0; |
---|
2429 | pos = is->tellg(); |
---|
2430 | |
---|
2431 | /* names */ |
---|
2432 | |
---|
2433 | surf->name = getS0(); |
---|
2434 | surf->srcname = getS0(); |
---|
2435 | |
---|
2436 | /* first subchunk header */ |
---|
2437 | |
---|
2438 | id = getU4(); |
---|
2439 | sz = getU2(); |
---|
2440 | if ( 0 > flen ) goto Fail; |
---|
2441 | |
---|
2442 | /* process subchunks as they're encountered */ |
---|
2443 | |
---|
2444 | for (;;) { |
---|
2445 | sz += sz & 1; |
---|
2446 | flen = 0; |
---|
2447 | |
---|
2448 | switch ( id ) { |
---|
2449 | case ID_COLR: |
---|
2450 | surf->color.rgb[ 0 ] = getF4(); |
---|
2451 | surf->color.rgb[ 1 ] = getF4(); |
---|
2452 | surf->color.rgb[ 2 ] = getF4(); |
---|
2453 | surf->color.eindex = getVX(); |
---|
2454 | break; |
---|
2455 | |
---|
2456 | case ID_LUMI: |
---|
2457 | surf->luminosity.val = getF4(); |
---|
2458 | surf->luminosity.eindex = getVX(); |
---|
2459 | break; |
---|
2460 | |
---|
2461 | case ID_DIFF: |
---|
2462 | surf->diffuse.val = getF4(); |
---|
2463 | surf->diffuse.eindex = getVX(); |
---|
2464 | break; |
---|
2465 | |
---|
2466 | case ID_SPEC: |
---|
2467 | surf->specularity.val = getF4(); |
---|
2468 | surf->specularity.eindex = getVX(); |
---|
2469 | break; |
---|
2470 | |
---|
2471 | case ID_GLOS: |
---|
2472 | surf->glossiness.val = getF4(); |
---|
2473 | surf->glossiness.eindex = getVX(); |
---|
2474 | break; |
---|
2475 | |
---|
2476 | case ID_REFL: |
---|
2477 | surf->reflection.val.val = getF4(); |
---|
2478 | surf->reflection.val.eindex = getVX(); |
---|
2479 | break; |
---|
2480 | |
---|
2481 | case ID_RFOP: |
---|
2482 | surf->reflection.options = getU2(); |
---|
2483 | break; |
---|
2484 | |
---|
2485 | case ID_RIMG: |
---|
2486 | surf->reflection.cindex = getVX(); |
---|
2487 | break; |
---|
2488 | |
---|
2489 | case ID_RSAN: |
---|
2490 | surf->reflection.seam_angle = getF4(); |
---|
2491 | break; |
---|
2492 | |
---|
2493 | case ID_TRAN: |
---|
2494 | surf->transparency.val.val = getF4(); |
---|
2495 | surf->transparency.val.eindex = getVX(); |
---|
2496 | break; |
---|
2497 | |
---|
2498 | case ID_TROP: |
---|
2499 | surf->transparency.options = getU2(); |
---|
2500 | break; |
---|
2501 | |
---|
2502 | case ID_TIMG: |
---|
2503 | surf->transparency.cindex = getVX(); |
---|
2504 | break; |
---|
2505 | |
---|
2506 | case ID_RIND: |
---|
2507 | surf->eta.val = getF4(); |
---|
2508 | surf->eta.eindex = getVX(); |
---|
2509 | break; |
---|
2510 | |
---|
2511 | case ID_TRNL: |
---|
2512 | surf->translucency.val = getF4(); |
---|
2513 | surf->translucency.eindex = getVX(); |
---|
2514 | break; |
---|
2515 | |
---|
2516 | case ID_BUMP: |
---|
2517 | surf->bump.val = getF4(); |
---|
2518 | surf->bump.eindex = getVX(); |
---|
2519 | break; |
---|
2520 | |
---|
2521 | case ID_SMAN: |
---|
2522 | surf->smooth = getF4(); |
---|
2523 | break; |
---|
2524 | |
---|
2525 | case ID_SIDE: |
---|
2526 | surf->sideflags = getU2(); |
---|
2527 | break; |
---|
2528 | |
---|
2529 | case ID_CLRH: |
---|
2530 | surf->color_hilite.val = getF4(); |
---|
2531 | surf->color_hilite.eindex = getVX(); |
---|
2532 | break; |
---|
2533 | |
---|
2534 | case ID_CLRF: |
---|
2535 | surf->color_filter.val = getF4(); |
---|
2536 | surf->color_filter.eindex = getVX(); |
---|
2537 | break; |
---|
2538 | |
---|
2539 | case ID_ADTR: |
---|
2540 | surf->add_trans.val = getF4(); |
---|
2541 | surf->add_trans.eindex = getVX(); |
---|
2542 | break; |
---|
2543 | |
---|
2544 | case ID_SHRP: |
---|
2545 | surf->dif_sharp.val = getF4(); |
---|
2546 | surf->dif_sharp.eindex = getVX(); |
---|
2547 | break; |
---|
2548 | |
---|
2549 | case ID_GVAL: |
---|
2550 | surf->glow.val = getF4(); |
---|
2551 | surf->glow.eindex = getVX(); |
---|
2552 | break; |
---|
2553 | |
---|
2554 | case ID_LINE: |
---|
2555 | surf->line.enabled = 1; |
---|
2556 | if ( sz >= 2 ) surf->line.flags = getU2(); |
---|
2557 | if ( sz >= 6 ) surf->line.size.val = getF4(); |
---|
2558 | if ( sz >= 8 ) surf->line.size.eindex = getVX(); |
---|
2559 | break; |
---|
2560 | |
---|
2561 | case ID_ALPH: |
---|
2562 | surf->alpha_mode = getU2(); |
---|
2563 | surf->alpha = getF4(); |
---|
2564 | break; |
---|
2565 | |
---|
2566 | case ID_AVAL: |
---|
2567 | surf->alpha = getF4(); |
---|
2568 | break; |
---|
2569 | |
---|
2570 | case ID_BLOK: |
---|
2571 | type = getU4(); |
---|
2572 | |
---|
2573 | switch ( type ) { |
---|
2574 | case ID_IMAP: |
---|
2575 | case ID_PROC: |
---|
2576 | case ID_GRAD: |
---|
2577 | tex = lwGetTexture( sz - 4, type ); |
---|
2578 | if ( !tex ) goto Fail; |
---|
2579 | if ( !surf->addTexture(tex) ) delete tex; |
---|
2580 | flen += 4; |
---|
2581 | break; |
---|
2582 | case ID_SHDR: |
---|
2583 | shdr = lwGetShader( sz - 4 ); |
---|
2584 | if ( !shdr ) goto Fail; |
---|
2585 | surf->shaders.insert(lower_bound(surf->shaders.begin(), surf->shaders.end(), shdr), shdr); |
---|
2586 | flen += 4; |
---|
2587 | break; |
---|
2588 | } |
---|
2589 | break; |
---|
2590 | |
---|
2591 | default: |
---|
2592 | break; |
---|
2593 | } |
---|
2594 | |
---|
2595 | /* error while reading current subchunk? */ |
---|
2596 | |
---|
2597 | rlen = flen; |
---|
2598 | if ( rlen < 0 || rlen > sz ) goto Fail; |
---|
2599 | |
---|
2600 | /* skip unread parts of the current subchunk */ |
---|
2601 | |
---|
2602 | if ( rlen < sz ) |
---|
2603 | is->seekg(sz - rlen, ios_base::cur ); |
---|
2604 | |
---|
2605 | /* end of the SURF chunk? */ |
---|
2606 | |
---|
2607 | fpos = is->tellg(); |
---|
2608 | if ( fpos == -1 ) break; |
---|
2609 | if ( chunksize + pos <= fpos ) break; |
---|
2610 | |
---|
2611 | /* get the next subchunk header */ |
---|
2612 | |
---|
2613 | flen = 0; |
---|
2614 | id = getU4(); |
---|
2615 | sz = getU2(); |
---|
2616 | if ( 6 != flen ) goto Fail; |
---|
2617 | } |
---|
2618 | |
---|
2619 | return surf; |
---|
2620 | |
---|
2621 | Fail: |
---|
2622 | if ( surf ) delete surf; |
---|
2623 | return NULL; |
---|
2624 | } |
---|
2625 | |
---|
2626 | /* |
---|
2627 | ====================================================================== |
---|
2628 | lwGetVMap() |
---|
2629 | |
---|
2630 | Read an lwVMap from a VMAP or VMAD chunk in an LWO2. |
---|
2631 | ====================================================================== */ |
---|
2632 | |
---|
2633 | lwVMap *lwReader::lwGetVMap( int ptoffset, int poloffset, int perpoly ) |
---|
2634 | { |
---|
2635 | char *buf, *bp; |
---|
2636 | lwVMap *vmap; |
---|
2637 | unsigned int i, j, npts, rlen; |
---|
2638 | |
---|
2639 | /* read the whole chunk */ |
---|
2640 | |
---|
2641 | flen = 0; |
---|
2642 | buf = getbytes( chunksize ); |
---|
2643 | if ( !buf ) return NULL; |
---|
2644 | |
---|
2645 | vmap = new lwVMap; |
---|
2646 | if ( !vmap ) { |
---|
2647 | free(buf); |
---|
2648 | return NULL; |
---|
2649 | } |
---|
2650 | |
---|
2651 | /* initialize the vmap */ |
---|
2652 | |
---|
2653 | vmap->perpoly = perpoly; |
---|
2654 | |
---|
2655 | bp = buf; |
---|
2656 | flen = 0; |
---|
2657 | vmap->type = sgetU4( &bp ); |
---|
2658 | vmap->dim = sgetU2( &bp ); |
---|
2659 | vmap->name = sgetS0( &bp ); |
---|
2660 | rlen = flen; |
---|
2661 | |
---|
2662 | /* count the vmap records */ |
---|
2663 | |
---|
2664 | npts = 0; |
---|
2665 | while ( bp < buf + chunksize ) { |
---|
2666 | i = sgetVX( &bp ); |
---|
2667 | if ( perpoly ) |
---|
2668 | i = sgetVX( &bp ); |
---|
2669 | bp += vmap->dim * sizeof( float ); |
---|
2670 | ++npts; |
---|
2671 | } |
---|
2672 | |
---|
2673 | /* allocate the vmap */ |
---|
2674 | |
---|
2675 | vmap->nverts = npts; |
---|
2676 | vmap->vindex = (int *)malloc(npts * sizeof(int)); |
---|
2677 | if ( !vmap->vindex ) goto Fail; |
---|
2678 | if ( perpoly ) |
---|
2679 | { |
---|
2680 | vmap->pindex = (int *)malloc(npts * sizeof(int)); |
---|
2681 | if ( !vmap->pindex ) goto Fail; |
---|
2682 | } |
---|
2683 | |
---|
2684 | if ( vmap->dim > 0 ) |
---|
2685 | { |
---|
2686 | vmap->val = (float **)malloc(npts * sizeof(float *)); |
---|
2687 | if ( !vmap->val ) goto Fail; |
---|
2688 | for ( i = 0; i < npts; i++ ) |
---|
2689 | vmap->val[ i ] = (float *)malloc(vmap->dim * sizeof( float )); |
---|
2690 | } |
---|
2691 | |
---|
2692 | /* fill in the vmap values */ |
---|
2693 | |
---|
2694 | bp = buf + rlen; |
---|
2695 | for ( i = 0; i < npts; i++ ) { |
---|
2696 | vmap->vindex[ i ] = sgetVX( &bp ); |
---|
2697 | if ( perpoly ) |
---|
2698 | vmap->pindex[ i ] = sgetVX( &bp ); |
---|
2699 | for ( j = 0; j < vmap->dim; j++ ) |
---|
2700 | vmap->val[ i ][ j ] = sgetF4( &bp ); |
---|
2701 | } |
---|
2702 | |
---|
2703 | free(buf); |
---|
2704 | return vmap; |
---|
2705 | |
---|
2706 | Fail: |
---|
2707 | free(buf); |
---|
2708 | delete vmap; |
---|
2709 | return NULL; |
---|
2710 | } |
---|