MeshLab Collada Materials =========================== Appears to be recognize textures based effects only, not phong parameterized effects. /usr/local/env/graphics/meshlab/vcglib/wrap/dae/util_dae.h:: 090 class UtilDAE 091 { ... 569 struct WedgeAttribute 570 { 571 QDomNode wnsrc; // input/sematic/NORMAL 572 QStringList wn; 573 int offnm; 574 575 QDomNode wtsrc; // input/semantic/TEXCOORD 576 QStringList wt; 577 int stride; 578 int offtx; 579 580 QDomNode wcsrc; // input/semantic/COLOR 581 QStringList wc; 582 int offcl; 583 }; 584 }; :: g4pb:wrap blyth$ find . -name '*.h' -exec grep -H WedgeAttribute {} \; ./dae/util_dae.h: void usePerWedgeAttributes(PERWEDGEATTRIBUTETYPE att,const unsigned int multitexture = 1,const unsigned int multicolor = 1) ./dae/util_dae.h: struct WedgeAttribute ./io_trimesh/import_dae.h: static void FindStandardWedgeAttributes(WedgeAttribute& wed,const QDomNode nd,const QDomDocument doc) ./io_trimesh/import_dae.h: WedgeAttribute wa; ./io_trimesh/import_dae.h: FindStandardWedgeAttributes(wa,polylist.at(tript),*(info.doc)); ./io_trimesh/import_dae.h: WedgeAttribute wa; ./io_trimesh/import_dae.h: FindStandardWedgeAttributes(wa,polylist.at(pl),*(info.doc)); ./io_trimesh/import_dae.h: WedgeAttribute wa; ./io_trimesh/import_dae.h: FindStandardWedgeAttributes(wa,triNodeList.at(tript),*(info.doc)); g4pb:wrap blyth$ :: 142 static void FindStandardWedgeAttributes(WedgeAttribute& wed,const QDomNode nd,const QDomDocument doc) 143 { 144 wed.wnsrc = findNodeBySpecificAttributeValue(nd,"input","semantic","NORMAL"); 145 wed.offnm = findStringListAttribute(wed.wn,wed.wnsrc,nd,doc,"NORMAL"); 146 147 wed.wtsrc = findNodeBySpecificAttributeValue(nd,"input","semantic","TEXCOORD"); 148 if (!wed.wtsrc.isNull()) 149 { 150 QDomNode src = attributeSourcePerSimplex(nd,doc,"TEXCOORD"); 151 if (isThereTag(src,"accessor")) 152 { 153 QDomNodeList wedatts = src.toElement().elementsByTagName("accessor"); 154 wed.stride = wedatts.at(0).toElement().attribute("stride").toInt(); 155 } 156 else 157 wed.stride = 2; 158 } 159 else 160 wed.stride = 2; 161 162 wed.offtx = findStringListAttribute(wed.wt,wed.wtsrc,nd,doc,"TEXCOORD"); // fills wed.wt 163 164 wed.wcsrc = findNodeBySpecificAttributeValue(nd,"input","semantic","COLOR"); 165 wed.offcl = findStringListAttribute(wed.wc,wed.wcsrc,nd,doc,"COLOR"); // fill wed.wc 166 } :: 482 inline static int findStringListAttribute(QStringList& list,const QDomNode node,const QDomNode poly,const QDomDocument startpoint,const char* token) 483 { 484 int offset = 0; 485 if (!node.isNull()) 486 { 487 offset = node.toElement().attribute("offset").toInt(); 488 QDomNode st = attributeSourcePerSimplex(poly,startpoint,token); // lookup input elem with matched token (semantic) use the source reference to access the data 489 valueStringList(list,st,"float_array"); 490 } 491 return offset; 492 } 493 494 :: 173 static DAEError LoadPolygonalListMesh(QDomNodeList& polylist,ColladaMesh& m,const size_t offset,InfoDAE& info,QMap &materialBinding) 174 { 175 if(polylist.isEmpty()) return E_NOERROR; 176 QDEBUG("****** LoadPolygonalListMesh (initial mesh size %i %i)",m.vert.size(),m.fn); 177 for(int tript = 0; tript < polylist.size();++tript) 178 { ... 218 WedgeAttribute wa; 219 FindStandardWedgeAttributes(wa,polylist.at(tript),*(info.doc)); 220 QDEBUG("******* Start Reading faces. Attributes Offsets: offtx %i - offnm %i - offcl %i",wa.offtx,wa.offnm,wa.offcl); 221 222 int faceIndexCnt=0; 223 int jj = 0; 224 for(int ff = 0; ff < (int) faceSizeList.size();++ff) // for each polygon /// from "vcount" eg 3 3 3 3 3 4 4 4 4 4 225 { 226 int curFaceVertNum = faceSizeList.at(ff).toInt(); 227 228 MyPolygon polyTemp(curFaceVertNum); 229 for(int tt = 0;tt < curFaceVertNum ;++tt) // for each vertex of the polygon 230 { 231 int indvt = faceIndexList.at(faceIndexCnt).toInt(); /// from "p" 232 if(faceSizeList.size()<100) QDEBUG("******* Reading face[%3i].V(%i) = %4i (%i-th of the index list) (face has %i vertices)",ff,tt,indvt,faceIndexCnt,curFaceVertNum); 233 assert(indvt + offset < m.vert.size()); 234 polyTemp._pv[tt] = &(m.vert[indvt + offset]); 235 faceIndexCnt +=faceAttributeNum; 236 237 WedgeTextureAttribute(polyTemp._txc[tt],faceIndexList,ind_txt, wa.wt ,wa.wtsrc, jj + wa.offtx,wa.stride); /// /// associates a vertex, with texture index /// jj + wa.offtx ==> faceind points to indtx from faceIndexList /// /// giving association with texture /// U(), V() coordinates within the image /// N() image number /// /// 249 250 jj += faceAttributeNum; 251 } 252 253 AddPolygonToMesh(polyTemp,m); 254 } 255 } :: 110 // this one is used for the polylist nodes 111 static int WedgeTextureAttribute(typename ColladaMesh::FaceType::TexCoordType & WT, const QStringList faceIndexList, int ind_txt, const QStringList wt, const QDomNode wtsrc,const int faceind,const int stride = 2) 112 { 113 int indtx = -1; 114 if (!wtsrc.isNull()) 115 { 116 indtx = faceIndexList.at(faceind).toInt(); 117 //int num = wt.size(); 118 assert(indtx * stride < wt.size()); 119 WT = vcg::TexCoord2(); 120 WT.U() = wt.at(indtx * stride).toFloat(); 121 WT.V() = wt.at(indtx * stride + 1).toFloat(); 122 WT.N() = ind_txt; 123 } 124 return indtx; 125 } Untextured Polylist:: 127 128 129 130 4 4 4 4 4 4 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 131

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132 :: One texture image per material (only ~30 materials) leads to meshlab loading 4522 texture images and being unusably slow.:: LOG: 0 Loading textures LOG: 0 Texture[ 4515 ] = './textures/OpaqueVacuum.png' ( 100 x 100 ) -> ( 128 x 128 ) will be loaded as GL texture id 0 ( 128 x 128 ) LOG: 0 Loading textures LOG: 0 Texture[ 4516 ] = './textures/Pyrex.png' ( 100 x 100 ) -> ( 128 x 128 ) will be loaded as GL texture id 0 ( 128 x 128 ) LOG: 0 Loading textures LOG: 0 Texture[ 4517 ] = './textures/Bialkali.png' ( 100 x 100 ) -> ( 128 x 128 ) will be loaded as GL texture id 0 ( 128 x 128 ) LOG: 0 Loading textures LOG: 0 Texture[ 4518 ] = './textures/OpaqueVacuum.png' ( 100 x 100 ) -> ( 128 x 128 ) will be loaded as GL texture id 0 ( 128 x 128 ) LOG: 0 Loading textures LOG: 0 Texture[ 4519 ] = './textures/Pyrex.png' ( 100 x 100 ) -> ( 128 x 128 ) will be loaded as GL texture id 0 ( 128 x 128 ) LOG: 0 Loading textures LOG: 0 Texture[ 4520 ] = './textures/Bialkali.png' ( 100 x 100 ) -> ( 128 x 128 ) will be loaded as GL texture id 0 ( 128 x 128 ) LOG: 0 Loading textures LOG: 0 Texture[ 4521 ] = './textures/OpaqueVacuum.png' ( 100 x 100 ) -> ( 128 x 128 ) will be loaded as GL texture id 0 ( 128 x 128 ) LOG: 0 Loading textures LOG: 0 Texture[ 4522 ] = './textures/RadRock.png' ( 100 x 100 ) -> ( 128 x 128 ) will be loaded as GL texture id 0 ( 128 x 128 )