149 lines
4.8 KiB
C++
149 lines
4.8 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 1.2 2004/03/10 00:46:10 cignoni
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changed to the face::IsBorder() style
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Revision 1.1 2004/03/05 10:59:24 cignoni
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Changed name from plural to singular (normals->normal)
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Revision 1.1 2004/03/04 00:37:56 cignoni
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First working version!
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****************************************************************************/
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#ifndef __VCG_TRI_UPDATE_FLAGS
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#define __VCG_TRI_UPDATE_FLAGS
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namespace vcg {
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namespace tri {
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/** \addtogroup trimesh */
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/*@{*/
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/// Management, updating and computation of per-vertex and per-face flags (like border flags).
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/// This class is used to compute or update some of the flags that can be stored in the mesh components. For now just Border flags (e.g. the flag that tells if a given edge of a face belong to a border of the mesh or not).
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template <class UpdateMeshType>
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class UpdateFlags
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{
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public:
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typedef UpdateMeshType MeshType;
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typedef typename MeshType::VertexType VertexType;
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typedef typename MeshType::VertexPointer VertexPointer;
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typedef typename MeshType::VertexIterator VertexIterator;
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typedef typename MeshType::FaceType FaceType;
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typedef typename MeshType::FacePointer FacePointer;
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typedef typename MeshType::FaceIterator FaceIterator;
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static void FaceBorderFromFF(MeshType &m)
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{
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const int BORDERFLAG[3]={FaceType::BORDER0,FaceType::BORDER1,FaceType::BORDER2};
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FaceIterator fi;
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for(fi=m.face.begin();fi!=m.face.end();++fi)if(!(*fi).IsD())
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for(int j=0;j<3;++j)
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{
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//if(!(*fi).IsManifold(j)) (*fi).SetCF(j);
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//else
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if(face::IsBorder(*fi,j)) (*fi).SetB(j);
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else (*fi).ClearB(j);
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}
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}
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// versione minimale che non calcola i complex flag.
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void FaceBorderFromNone()
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{
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typedef PEdge<MCTYPE, MVTYPE, MFTYPE > MPEDGE;
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vector<MPEDGE> e;
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face_iterator pf;
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vector<MPEDGE>::iterator p;
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if( fn == 0 ) return;
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e.resize(fn*3); // Alloco il vettore ausiliario
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p = e.begin();
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for(pf=face.begin();pf!=face.end();++pf) // Lo riempio con i dati delle facce
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if( ! (*pf).IsDeleted() )
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for(int j=0;j<3;++j)
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{
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(*p).Set(&(*pf),j);
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(*pf).ClearB(j);
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++p;
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}
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assert(p==e.end());
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sort(e.begin(), e.end()); // Lo ordino per vertici
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vector<MPEDGE>::iterator pe,ps;
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for(ps = e.begin(), pe=e.begin(); pe<=e.end(); ++pe) // Scansione vettore ausiliario
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{
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if( pe==e.end() || *pe != *ps ) // Trovo blocco di edge uguali
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{
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if(pe-ps==1) {
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//++nborder;
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ps->f->SetB(ps->z);
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} else
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if(pe-ps!=2) { // Caso complex!!
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for(;ps!=pe;++ps)
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ps->f->SetB(ps->z); // Si settano border anche i complex.
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}
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ps = pe;
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// ++ne; // Aggiorno il numero di edge
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}
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}
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// TRACE("found %i border (%i complex) on %i edges\n",nborder,ncomplex,ne);
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}
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/// Bisogna carlcolare il border flag delle facce
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void VertexBorderFromFace()
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{
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vertex_iterator v;
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face_iterator f;
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for(v=vert.begin();v!=vert.end();++v)
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(*v).ClearB();
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for(f=face.begin();f!=face.end();++f)
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{
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for(int z=0;z<3;++z)
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if( (*f).IsB(z) )
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{
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(*f).V0(z)->SetB();
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(*f).V1(z)->SetB();
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}
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}
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}
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}; // end class
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/*@}*/
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} // End namespace
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} // End namespace
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#endif
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