175 lines
6.7 KiB
C++
175 lines
6.7 KiB
C++
/****************************************************************************
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* VCGLib o o *
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* Visual and Computer Graphics Library o o *
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* _ O _ *
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* Copyright(C) 2004 \/)\/ *
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* Visual Computing Lab /\/| *
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* ISTI - Italian National Research Council | *
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* \ *
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* All rights reserved. *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License (http://www.gnu.org/licenses/gpl.txt) *
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* for more details. *
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* *
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****************************************************************************/
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/****************************************************************************
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History
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$Log: not supported by cvs2svn $
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Revision 1.1 2007/02/14 01:20:37 ganovelli
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working draft of VCG Mesh Image importer and exporter. Does not consider optional attributes. The mesh atributes are only vn and fn (no bbox, texture coordiantes)
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****************************************************************************/
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#ifndef __VCGLIB_IMPORT_VMI
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#define __VCGLIB_IMPORT_VMI
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/*
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VMI VCG Mesh Image.
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The vmi image file consists of a header containing the description of the vertex and face type,
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the length of vectors containing vertices of faces and the memory image of the object mesh as it is when
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passed to the function Save(SaveMeshType m)
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*/
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namespace vcg {
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namespace tri {
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namespace io {
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template <class OpenMeshType>
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class ImporterVMI
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{
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public:
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typedef typename OpenMeshType::FaceIterator FaceIterator;
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typedef typename OpenMeshType::VertexIterator VertexIterator;
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typedef typename OpenMeshType::VertexType VertexType;
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static bool GetHeader(FILE * f,std::vector<std::string>& fnameV, std::vector<std::string>& fnameF, int & vertSize, int &faceSize){
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char name[100];
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char buf[4096];
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int nameFsize,nameVsize,i;
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fgets(buf,4096,f);
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sscanf(buf,"%s %d",&name[0],&nameFsize);
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for(i=0; i < nameFsize; ++i) {
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fgets(buf,4096,f);
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sscanf(buf,"%s ",&name[0]);fnameF.push_back(std::string(name));
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}
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fgets(buf,4096,f);
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sscanf(buf,"%s %d",&name[0],&faceSize);
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fgets(buf,4096,f);
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sscanf(buf,"%s %d",&name[0],&nameVsize);
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for(i=0; i < nameVsize; ++i) {
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fgets(buf,4096,f);
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sscanf(buf,"%s ",&name[0]);fnameV.push_back(std::string(name));}
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fgets(buf,4096,f);
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sscanf(buf,"%s %d",&name[0],&vertSize);
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fgets(buf,4096,f);
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assert(strstr(buf,"end_header")!=NULL);
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return true;
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}
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static bool GetHeader(char * filename,std::vector<std::string>& nameV, std::vector<std::string>& nameF, int & vertSize, int &faceSize){
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FILE * f = fopen(filename,"rb");
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return GetHeader(f,nameV, nameF, vertSize, faceSize);
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fclose(f);
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}
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static bool Open(OpenMeshType &m,char * filename){
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int i;
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OpenMeshType::FaceIterator fi;
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OpenMeshType::VertexIterator vi;
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FILE * f = fopen(filename,"rb");
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std::vector<string> nameF,nameV,fnameF,fnameV;
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int vertSize,faceSize;
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/* read the header */
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GetHeader(f,fnameV, fnameF, vertSize, faceSize);
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/* read the mesh type */
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OpenMeshType::FaceType::Name(nameF);
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OpenMeshType::VertexType::Name(nameV);
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/* check if the type is the very same, otherwise return */
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if(fnameV != nameV) return false;
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if(fnameF != nameF) return false;
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int offsetV,offsetF;
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/* read the address of the first vertex */
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fread(&offsetV,sizeof( int),1,f);
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/* read the address of the first face */
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fread(&offsetF,sizeof( int),1,f);
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/* read the object mesh */
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fread(&m,sizeof(OpenMeshType),1,f);
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/* overwrite che container because they could be inconsistent */
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OpenMeshType::VertContainer tvc;
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OpenMeshType::FaceContainer tfc;
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memcpy(&m.vert,&tvc,sizeof(OpenMeshType::VertContainer));
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memcpy(&m.face,&tfc,sizeof(OpenMeshType::FaceContainer));
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m.vert.resize(vertSize);
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int read;
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/* load the vertices */
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read=fread((void*)& m.vert[0],sizeof(OpenMeshType::VertexType),vertSize,f);
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assert(ferror(f)==0);
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assert(read==vertSize);
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m.face.resize(faceSize);
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/* load the faces */
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read = fread((void*)& m.face[0],sizeof(OpenMeshType::FaceType),faceSize,f);
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assert(ferror(f)==0);
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assert(!feof(f));
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assert(read==faceSize);
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if(OpenMeshType::FaceType::HasVFAdjacency())
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for(vi = m.vert.begin(); vi != m.vert.end(); ++vi){
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(*vi).VFp() = (*vi).VFp()-(OpenMeshType::FaceType*)offsetF+ &m.face[0];
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(*vi).VFp() = (*vi).VFp()-(OpenMeshType::FaceType*)offsetF+ &m.face[0];
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(*vi).VFp() = (*vi).VFp()-(OpenMeshType::FaceType*)offsetF+ &m.face[0];
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}
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if(OpenMeshType::FaceType::HasVertexRef())
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for(fi = m.face.begin(); fi != m.face.end(); ++fi){
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(*fi).V(0) = (*fi).V(0)-(OpenMeshType::VertexType*)offsetV+ &m.vert[0];
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(*fi).V(1) = (*fi).V(1)-(OpenMeshType::VertexType*)offsetV+ &m.vert[0];
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(*fi).V(2) = (*fi).V(2)-(OpenMeshType::VertexType*)offsetV+ &m.vert[0];
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}
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if(OpenMeshType::FaceType::HasFFAdjacency())
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for(fi = m.face.begin(); fi != m.face.end(); ++fi){
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(*fi).FFp(0) = (*fi).FFp(0)-(OpenMeshType::FaceType*)offsetF+ &m.face[0];
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(*fi).FFp(1) = (*fi).FFp(1)-(OpenMeshType::FaceType*)offsetF+ &m.face[0];
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(*fi).FFp(2) = (*fi).FFp(2)-(OpenMeshType::FaceType*)offsetF+ &m.face[0];
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}
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if(OpenMeshType::FaceType::HasVFAdjacency())
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for(fi = m.face.begin(); fi != m.face.end(); ++fi){
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(*fi).VFp(0) = (*fi).VFp(0)-(OpenMeshType::FaceType*)offsetF+ &m.face[0];
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(*fi).VFp(1) = (*fi).VFp(1)-(OpenMeshType::FaceType*)offsetF+ &m.face[0];
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(*fi).VFp(2) = (*fi).VFp(2)-(OpenMeshType::FaceType*)offsetF+ &m.face[0];
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}
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fclose(f);
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}
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}; // end class
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} // end Namespace tri
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} // end Namespace io
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} // end Namespace vcg
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#endif
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