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salome-smesh  6.5.0
SMDS_IteratorOfElements.cxx
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00001 // Copyright (C) 2007-2012  CEA/DEN, EDF R&D, OPEN CASCADE
00002 //
00003 // Copyright (C) 2003-2007  OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
00004 // CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
00005 //
00006 // This library is free software; you can redistribute it and/or
00007 // modify it under the terms of the GNU Lesser General Public
00008 // License as published by the Free Software Foundation; either
00009 // version 2.1 of the License.
00010 //
00011 // This library is distributed in the hope that it will be useful,
00012 // but WITHOUT ANY WARRANTY; without even the implied warranty of
00013 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00014 // Lesser General Public License for more details.
00015 //
00016 // You should have received a copy of the GNU Lesser General Public
00017 // License along with this library; if not, write to the Free Software
00018 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
00019 //
00020 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
00021 //
00022 
00023 //  SMESH SMDS : implementaion of Salome mesh data structure
00024 //
00025 #ifdef _MSC_VER
00026 #pragma warning(disable:4786)
00027 #endif
00028 
00029 #include "SMDS_IteratorOfElements.hxx"
00030 
00031 bool SMDS_IteratorOfElements::subMore()
00032 {
00033         if((t2Iterator.get()==NULL)||(!t2Iterator->more()))
00034         {
00035                 if(t1Iterator->more())
00036                 {
00037                         t2Iterator=t1Iterator->next()->elementsIterator(myType);
00038                         return subMore();
00039                 }
00040                 else return false;
00041         }
00042         else return true;
00043 }
00044 
00045 const SMDS_MeshElement * SMDS_IteratorOfElements::subNext()
00046 {
00047         if((t2Iterator.get()==NULL)||(!t2Iterator->more()))
00048                 if(t1Iterator->more())
00049                         t2Iterator=t1Iterator->next()->elementsIterator(myType);
00050         return t2Iterator->next();
00051 }
00052 
00057 SMDS_IteratorOfElements::SMDS_IteratorOfElements(const SMDS_MeshElement * element,
00058                                                  SMDSAbs_ElementType type,
00059                                                  const SMDS_ElemIteratorPtr& it)
00060      : t1Iterator(it),
00061        t2Iterator(SMDS_ElemIteratorPtr((SMDS_ElemIterator*)NULL)),
00062        myType(type), myElement(element),
00063        myProxyElement(NULL)
00064 {
00065         while(subMore())
00066                 alreadyReturnedElements.insert(subNext());
00067         itAlreadyReturned= alreadyReturnedElements.begin();
00068         switch(myElement->GetType())
00069         {
00070         case SMDSAbs_Node: 
00071         case SMDSAbs_Edge: myReverseIteration=true; break;
00072         case SMDSAbs_Face: myReverseIteration=(type==SMDSAbs_Volume); break;
00073         default: myReverseIteration=false;
00074         }       
00075 }
00076 
00077 bool SMDS_IteratorOfElements::more()
00078 {
00079         if(myProxyElement==NULL)
00080         {
00081                 while(itAlreadyReturned!=alreadyReturnedElements.end())
00082                 {
00083                         myProxyElement=*itAlreadyReturned;
00084                         itAlreadyReturned++;    
00085 
00086                         if(myReverseIteration)
00087                         {
00088                                 SMDS_ElemIteratorPtr it=
00089                                         myProxyElement->elementsIterator(myElement->GetType());
00090                                 while(it->more())
00091                                 {                               
00092                                         if(it->next()==myElement) return true;
00093                                 }
00094                         }
00095                         else return true;
00096                 }
00097                 myProxyElement=NULL;
00098                 return false;
00099         }
00100         else return true;
00101 }
00102 
00103 const SMDS_MeshElement * SMDS_IteratorOfElements::next()
00104 {
00105         more();
00106         const SMDS_MeshElement *e=myProxyElement;
00107         myProxyElement=NULL;
00108         return e;
00109 }