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;
|
---|
516 | }
|
---|
517 | revbytes( &i, 4, 1 );
|
---|
518 | flen += 4;
|
---|
519 | return i;
|
---|
520 | }
|
---|
521 |
|
---|
522 |
|
---|
523 | int lwReader::getVX()
|
---|
524 | {
|
---|
525 | int i;
|
---|
526 | short c;
|
---|
527 |
|
---|
528 | if ( flen == FLEN_ERROR ) return 0;
|
---|
529 |
|
---|
530 | is->read((char *)&c, 2);
|
---|
531 |
|
---|
532 | if ( (c & 0x00FF) != 0xFF )
|
---|
533 | {
|
---|
534 | i = swappedShort(c);
|
---|
535 | flen += 2;
|
---|
536 | }
|
---|
537 | else
|
---|
538 | {
|
---|
539 | i = (swappedShort(c) & 0x00FF) << 16;
|
---|
540 | is->read((char *)&c, 2);
|
---|
541 | i |= swappedShort(c);
|
---|
542 | flen += 4;
|
---|
543 | }
|
---|
544 |
|
---|
545 | if ( is->bad() ) {
|
---|
546 | flen = FLEN_ERROR;
|
---|
547 | return 0;
|
---|
548 | }
|
---|
549 | return i;
|
---|
550 | }
|
---|
551 |
|
---|
552 |
|
---|
553 | float lwReader::getF4()
|
---|
554 | {
|
---|
555 | float f;
|
---|
556 |
|
---|
557 | if ( flen == FLEN_ERROR ) return 0.0f;
|
---|
558 | is->read((char *)&f, 4);
|
---|
559 | if (is->gcount() != 4)
|
---|
560 | {
|
---|
561 | flen = FLEN_ERROR;
|
---|
562 | return 0.0f;
|
---|
563 | }
|
---|
564 | revbytes( &f, 4, 1 );
|
---|
565 | flen += 4;
|
---|
566 | return f;
|
---|
567 | }
|
---|
568 |
|
---|
569 | char *lwReader::getS0()
|
---|
570 | {
|
---|
571 | char *s;
|
---|
572 | int i, len, pos;
|
---|
573 | char c;
|
---|
574 |
|
---|
575 | if ( flen == FLEN_ERROR ) return NULL;
|
---|
576 |
|
---|
577 | pos = is->tellg();
|
---|
578 | if (pos == -1) return 0;
|
---|
579 |
|
---|
580 | i = 0;
|
---|
581 | do
|
---|
582 | {
|
---|
583 | is->read(&c, 1);
|
---|
584 | i ++;
|
---|
585 | }
|
---|
586 | while (c > 0);
|
---|
587 |
|
---|
588 | if ( i == 1 ) // word align
|
---|
589 | {
|
---|
590 | is->read(&c, 1);
|
---|
591 | flen += 2;
|
---|
592 | return NULL;
|
---|
593 | }
|
---|
594 |
|
---|
595 | len = i + ( i & 1 );
|
---|
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 | }
|
---|