[657] | 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;
|
---|
| 483 | }
|
---|
| 484 | flen += 1;
|
---|
| 485 | return i;
|
---|
| 486 | }
|
---|
| 487 |
|
---|
| 488 |
|
---|
| 489 | unsigned short lwReader::getU2()
|
---|
| 490 | {
|
---|
| 491 | unsigned short i;
|
---|
| 492 |
|
---|
| 493 | if ( flen == FLEN_ERROR ) return 0;
|
---|
| 494 | is->read((char *)&i, 2);
|
---|
| 495 | if (is->gcount() != 2)
|
---|
| 496 | {
|
---|
| 497 | flen = FLEN_ERROR;
|
---|
| 498 | return 0;
|
---|
| 499 | }
|
---|
| 500 | revbytes( &i, 2, 1 );
|
---|
| 501 | flen += 2;
|
---|
| 502 | return i;
|
---|
| 503 | }
|
---|
| 504 |
|
---|
| 505 |
|
---|
| 506 | unsigned long lwReader::getU4()
|
---|
| 507 | {
|
---|
| 508 | unsigned long i;
|
---|
| 509 |
|
---|
| 510 | if ( flen == FLEN_ERROR ) return 0;
|
---|
| 511 | is->read((char *)&i, 4);
|
---|
| 512 | if (is->gcount() != 4)
|
---|
| 513 | {
|
---|
| 514 | flen = FLEN_ERROR;
|
---|
| 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 | }
|
---|