+// SMESH SMDS : implementaion of Salome mesh data structure
+//
+// Copyright (C) 2003 OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
+// CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public
+// License along with this library; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+//
+// See http://www.opencascade.org/SALOME/ or email : webmaster.salome@opencascade.org
+
+#include "SMDS_IteratorOfElements.hxx"
+
+bool SMDS_IteratorOfElements::subMore()
+{
+ if((t2Iterator==NULL)||(!t2Iterator->more()))
+ {
+ if(t1Iterator->more())
+ {
+ if(t2Iterator!=NULL) delete t2Iterator;
+ t2Iterator=t1Iterator->next()->elementsIterator(myType);
+ return subMore();
+ }
+ else return false;
+ }
+ else return true;
+}
+
+const SMDS_MeshElement * SMDS_IteratorOfElements::subNext()
+{
+ if((t2Iterator==NULL)||(!t2Iterator->more()))
+ {
+ if(t1Iterator->more())
+ {
+ if(t2Iterator!=NULL) delete t2Iterator;
+ t2Iterator=t1Iterator->next()->elementsIterator(myType);
+ }
+ }
+ return t2Iterator->next();
+}
+
+/////////////////////////////////////////////////////////////////////////////
+/// Create an iterator which look for elements of type type which are linked
+/// to the element element. it is the iterator to get connectivity of element
+//////////////////////////////////////////////////////////////////////////////
+SMDS_IteratorOfElements::SMDS_IteratorOfElements(const SMDS_MeshElement * element,
+ SMDSAbs_ElementType type, SMDS_Iterator<const SMDS_MeshElement *>* it)
+ :t1Iterator(it), t2Iterator(NULL), myType(type), myElement(element),
+ myProxyElement(NULL)
+{
+ while(subMore())
+ alreadyReturnedElements.insert(subNext());
+ itAlreadyReturned= alreadyReturnedElements.begin();
+ switch(myElement->GetType())
+ {
+ case SMDSAbs_Node:
+ case SMDSAbs_Edge: myReverseIteration=true; break;
+ case SMDSAbs_Face: myReverseIteration=(type==SMDSAbs_Volume); break;
+ default: myReverseIteration=false;
+ }
+}
+
+bool SMDS_IteratorOfElements::more()
+{
+ if(myProxyElement==NULL)
+ {
+ while(itAlreadyReturned!=alreadyReturnedElements.end())
+ {
+ myProxyElement=*itAlreadyReturned;
+ itAlreadyReturned++;
+
+ if(myReverseIteration)
+ {
+ SMDS_Iterator<const SMDS_MeshElement*> * it=
+ myProxyElement->elementsIterator(myElement->GetType());
+ while(it->more())
+ {
+ if(it->next()==myElement) return true;
+ }
+ }
+ else return true;
+ }
+ myProxyElement=NULL;
+ return false;
+ }
+ else return true;
+}
+
+const SMDS_MeshElement * SMDS_IteratorOfElements::next()
+{
+ more();
+ const SMDS_MeshElement *e=myProxyElement;
+ myProxyElement=NULL;
+ return e;
+}
+
+SMDS_IteratorOfElements::~SMDS_IteratorOfElements()
+{
+ delete t1Iterator;
+ if(t2Iterator!=NULL) delete t2Iterator;
+}
