-// SMESH SMESH : implementaion of SMESH idl descriptions
+// Copyright (C) 2007-2008 CEA/DEN, EDF R&D, OPEN CASCADE
+//
+// Copyright (C) 2003-2007 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.
//
-// 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.salome-platform.org/ or email : webmaster.salome@opencascade.com
+// 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.salome-platform.org/ or email : webmaster.salome@opencascade.com
//
+// SMESH SMESH : implementaion of SMESH idl descriptions
// File : SMESH_Mesh.cxx
// Author : Paul RASCLE, EDF
// Module : SMESH
-// $Header$
-
+//
#include "SMESH_Mesh.hxx"
#include "SMESH_subMesh.hxx"
#include "SMESH_Gen.hxx"
#include "DriverUNV_R_SMDS_Mesh.h"
#include "DriverSTL_R_SMDS_Mesh.h"
+#undef _Precision_HeaderFile
+#include <BRepBndLib.hxx>
#include <BRepPrimAPI_MakeBox.hxx>
+#include <Bnd_Box.hxx>
#include <TopExp.hxx>
#include <TopExp_Explorer.hxx>
#include <TopTools_ListIteratorOfListOfShape.hxx>
//=============================================================================
SMESH_Mesh::SMESH_Mesh(int theLocalId,
- int theStudyId,
- SMESH_Gen* theGen,
- bool theIsEmbeddedMode,
- SMESHDS_Document* theDocument):
- _groupId( 0 )
+ int theStudyId,
+ SMESH_Gen* theGen,
+ bool theIsEmbeddedMode,
+ SMESHDS_Document* theDocument):
+ _groupId( 0 ), _nbSubShapes( 0 )
{
MESSAGE("SMESH_Mesh::SMESH_Mesh(int localId)");
_id = theLocalId;
_myMeshDS = theDocument->GetMesh(_idDoc);
_isShapeToMesh = false;
_isAutoColor = false;
+ _shapeDiagonal = 0.0;
_myMeshDS->ShapeToMesh( PseudoShape() );
}
{
INFOS("SMESH_Mesh::~SMESH_Mesh");
+ // issue 0020340: EDF 1022 SMESH : Crash with FindNodeClosestTo in a second new study
+ // Notify event listeners at least that something happens
+ if ( SMESH_subMesh * sm = GetSubMeshContaining(1))
+ sm->ComputeStateEngine( SMESH_subMesh::MESH_ENTITY_REMOVED );
+
// delete groups
- map < int, SMESH_Group * >::iterator itg;
+ std::map < int, SMESH_Group * >::iterator itg;
for (itg = _mapGroup.begin(); itg != _mapGroup.end(); itg++) {
SMESH_Group *aGroup = (*itg).second;
delete aGroup;
}
+ _mapGroup.clear();
}
//=============================================================================
{
if(MYDEBUG) MESSAGE("SMESH_Mesh::ShapeToMesh");
- if ( !aShape.IsNull() && _isShapeToMesh )
- throw SALOME_Exception(LOCALIZED ("a shape to mesh has already been defined"));
-
+ if ( !aShape.IsNull() && _isShapeToMesh ) {
+ if ( aShape.ShapeType() != TopAbs_COMPOUND && // group contents is allowed to change
+ _myMeshDS->ShapeToMesh().ShapeType() != TopAbs_COMPOUND )
+ throw SALOME_Exception(LOCALIZED ("a shape to mesh has already been defined"));
+ }
// clear current data
if ( !_myMeshDS->ShapeToMesh().IsNull() )
{
// removal of a shape to mesh, delete objects referring to sub-shapes:
// - sub-meshes
- map <int, SMESH_subMesh *>::iterator i_sm = _mapSubMesh.begin();
+ std::map <int, SMESH_subMesh *>::iterator i_sm = _mapSubMesh.begin();
for ( ; i_sm != _mapSubMesh.end(); ++i_sm )
delete i_sm->second;
_mapSubMesh.clear();
// - groups on geometry
- map <int, SMESH_Group *>::iterator i_gr = _mapGroup.begin();
+ std::map <int, SMESH_Group *>::iterator i_gr = _mapGroup.begin();
while ( i_gr != _mapGroup.end() ) {
if ( dynamic_cast<SMESHDS_GroupOnGeom*>( i_gr->second->GetGroupDS() )) {
_myMeshDS->RemoveGroup( i_gr->second->GetGroupDS() );
// clear SMESHDS
TopoDS_Shape aNullShape;
_myMeshDS->ShapeToMesh( aNullShape );
+
+ _shapeDiagonal = 0.0;
}
// set a new geometry
{
_myMeshDS->ShapeToMesh(aShape);
_isShapeToMesh = true;
+ _nbSubShapes = _myMeshDS->MaxShapeIndex();
// fill _mapAncestors
int desType, ancType;
(TopAbs_ShapeEnum) ancType,
_mapAncestors );
}
+ else
+ {
+ _isShapeToMesh = false;
+ _shapeDiagonal = 0.0;
+ _myMeshDS->ShapeToMesh( PseudoShape() );
+ }
}
//=======================================================================
return aSolid;
}
+//=======================================================================
+/*!
+ * \brief Return diagonal size of bounding box of a shape
+ */
+//=======================================================================
+
+double SMESH_Mesh::GetShapeDiagonalSize(const TopoDS_Shape & aShape)
+{
+ if ( !aShape.IsNull() ) {
+ Bnd_Box Box;
+ BRepBndLib::Add(aShape, Box);
+ return sqrt( Box.SquareExtent() );
+ }
+ return 0;
+}
+
+//=======================================================================
+/*!
+ * \brief Return diagonal size of bounding box of shape to mesh
+ */
+//=======================================================================
+
+double SMESH_Mesh::GetShapeDiagonalSize() const
+{
+ if ( _shapeDiagonal == 0. && _isShapeToMesh )
+ const_cast<SMESH_Mesh*>(this)->_shapeDiagonal = GetShapeDiagonalSize( GetShapeToMesh() );
+
+ return _shapeDiagonal;
+}
+
+//=======================================================================
+/*!
+ * \brief Remove all nodes and elements
+ */
+//=======================================================================
+
+void SMESH_Mesh::Clear()
+{
+ // clear mesh data
+ _myMeshDS->ClearMesh();
+
+ // update compute state of submeshes
+ if ( SMESH_subMesh *sm = GetSubMeshContaining( GetShapeToMesh() ) ) {
+ SMESH_subMeshIteratorPtr smIt = sm->getDependsOnIterator(/*includeSelf=*/true,
+ /*complexShapeFirst=*/false);
+ while ( smIt->more() ) {
+ sm = smIt->next();
+ sm->ComputeStateEngine( SMESH_subMesh::CHECK_COMPUTE_STATE );
+ }
+ }
+
+// // clear sub-meshes; get ready to re-compute as a side-effect
+
+// if ( SMESH_subMesh *sm = GetSubMeshContaining( GetShapeToMesh() ) )
+// {
+// SMESH_subMeshIteratorPtr smIt = sm->getDependsOnIterator(/*includeSelf=*/true,
+// /*complexShapeFirst=*/false);
+// while ( smIt->more() )
+// {
+// sm = smIt->next();
+// TopAbs_ShapeEnum shapeType = sm->GetSubShape().ShapeType();
+// if ( shapeType == TopAbs_VERTEX || shapeType < TopAbs_SOLID )
+// // all other shapes depends on vertices so they are already cleaned
+// sm->ComputeStateEngine( SMESH_subMesh::CLEAN );
+// // to recompute even if failed
+// sm->ComputeStateEngine( SMESH_subMesh::CHECK_COMPUTE_STATE );
+// }
+// }
+
+// // clear entities not on sub-meshes
+
+// SMDS_VolumeIteratorPtr vIt = _myMeshDS->volumesIterator();
+// while ( vIt->more() )
+// _myMeshDS->RemoveFreeElement( vIt->next(), 0 );
+
+// SMDS_FaceIteratorPtr fIt = _myMeshDS->facesIterator();
+// while ( fIt->more() )
+// _myMeshDS->RemoveFreeElement( fIt->next(), 0 );
+
+// SMDS_EdgeIteratorPtr eIt = _myMeshDS->edgesIterator();
+// while ( eIt->more() )
+// _myMeshDS->RemoveFreeElement( eIt->next(), 0 );
+
+// SMDS_NodeIteratorPtr nIt = _myMeshDS->nodesIterator();
+// while ( nIt->more() ) {
+// const SMDS_MeshNode * node = nIt->next();
+// if ( node->NbInverseElements() == 0 )
+// _myMeshDS->RemoveFreeNode( node, 0 );
+// else
+// _myMeshDS->RemoveNode(node);
+// }
+}
+
+//=======================================================================
+/*!
+ * \brief Remove all nodes and elements of indicated shape
+ */
+//=======================================================================
+
+void SMESH_Mesh::ClearSubMesh(const int theShapeId)
+{
+ // clear sub-meshes; get ready to re-compute as a side-effect
+ if ( SMESH_subMesh *sm = GetSubMeshContaining( theShapeId ) )
+ {
+ SMESH_subMeshIteratorPtr smIt = sm->getDependsOnIterator(/*includeSelf=*/true,
+ /*complexShapeFirst=*/false);
+ while ( smIt->more() )
+ {
+ sm = smIt->next();
+ TopAbs_ShapeEnum shapeType = sm->GetSubShape().ShapeType();
+ if ( shapeType == TopAbs_VERTEX || shapeType < TopAbs_SOLID )
+ // all other shapes depends on vertices so they are already cleaned
+ sm->ComputeStateEngine( SMESH_subMesh::CLEAN );
+ // to recompute even if failed
+ sm->ComputeStateEngine( SMESH_subMesh::CHECK_COMPUTE_STATE );
+ }
+ }
+}
+
//=======================================================================
//function : UNVToMesh
//purpose :
SMESH_Group* aSMESHGroup = AddGroup( aSubGroup->GetType(), aName.c_str(), aId );
if ( aSMESHGroup ) {
- if(MYDEBUG) MESSAGE("UNVToMesh - group added: "<<aName);
- SMESHDS_Group* aGroupDS = dynamic_cast<SMESHDS_Group*>( aSMESHGroup->GetGroupDS() );
- if ( aGroupDS ) {
- aGroupDS->SetStoreName(aName.c_str());
- aSubGroup->InitIterator();
- const SMDS_MeshElement* aElement = 0;
- while (aSubGroup->More()) {
- aElement = aSubGroup->Next();
- if (aElement) {
- aGroupDS->SMDSGroup().Add(aElement);
- }
- }
- if (aElement)
- aGroupDS->SetType(aElement->GetType());
- }
+
if(MYDEBUG) MESSAGE("UNVToMesh - group added: "<<aName);
+ SMESHDS_Group* aGroupDS = dynamic_cast<SMESHDS_Group*>( aSMESHGroup->GetGroupDS() );
+ if ( aGroupDS ) {
+ aGroupDS->SetStoreName(aName.c_str());
+ aSubGroup->InitIterator();
+ const SMDS_MeshElement* aElement = 0;
+ while (aSubGroup->More()) {
+ aElement = aSubGroup->Next();
+ if (aElement) {
+ aGroupDS->SMDSGroup().Add(aElement);
+ }
+ }
+ if (aElement)
+ aGroupDS->SetType(aElement->GetType());
+ }
}
}
}
}
// Reading groups (sub-meshes are out of scope of MED import functionality)
- list<TNameAndType> aGroupNames = myReader.GetGroupNamesAndTypes();
+ std::list<TNameAndType> aGroupNames = myReader.GetGroupNamesAndTypes();
if(MYDEBUG) MESSAGE("MEDToMesh - Nb groups = "<<aGroupNames.size());
int anId;
- list<TNameAndType>::iterator name_type = aGroupNames.begin();
+ std::list<TNameAndType>::iterator name_type = aGroupNames.begin();
for ( ; name_type != aGroupNames.end(); name_type++ ) {
SMESH_Group* aGroup = AddGroup( name_type->second, name_type->first.c_str(), anId );
if ( aGroup ) {
*/
//=============================================================================
-const list<const SMESHDS_Hypothesis*>&
+const std::list<const SMESHDS_Hypothesis*>&
SMESH_Mesh::GetHypothesisList(const TopoDS_Shape & aSubShape) const
throw(SALOME_Exception)
{
//=======================================================================
/*!
* \brief Return the hypothesis assigned to the shape
- * \param aSubShape - the shape to check
- * \param aFilter - the hypothesis filter
- * \param andAncestors - flag to check hypos assigned to ancestors of the shape
- * \retval SMESH_Hypothesis* - the first hypo passed through aFilter
+ * \param aSubShape - the shape to check
+ * \param aFilter - the hypothesis filter
+ * \param andAncestors - flag to check hypos assigned to ancestors of the shape
+ * \param assignedTo - to return the shape the found hypo is assigned to
+ * \retval SMESH_Hypothesis* - the first hypo passed through aFilter
*/
//=======================================================================
const SMESH_Hypothesis * SMESH_Mesh::GetHypothesis(const TopoDS_Shape & aSubShape,
const SMESH_HypoFilter& aFilter,
- const bool andAncestors) const
+ const bool andAncestors,
+ TopoDS_Shape* assignedTo) const
{
{
- const list<const SMESHDS_Hypothesis*>& hypList = _myMeshDS->GetHypothesis(aSubShape);
- list<const SMESHDS_Hypothesis*>::const_iterator hyp = hypList.begin();
+ const std::list<const SMESHDS_Hypothesis*>& hypList = _myMeshDS->GetHypothesis(aSubShape);
+ std::list<const SMESHDS_Hypothesis*>::const_iterator hyp = hypList.begin();
for ( ; hyp != hypList.end(); hyp++ ) {
const SMESH_Hypothesis * h = cSMESH_Hyp( *hyp );
- if ( aFilter.IsOk( h, aSubShape))
+ if ( aFilter.IsOk( h, aSubShape)) {
+ if ( assignedTo ) *assignedTo = aSubShape;
return h;
+ }
}
}
if ( andAncestors )
TopTools_ListIteratorOfListOfShape it( GetAncestors( aSubShape ));
for (; it.More(); it.Next() )
{
- const list<const SMESHDS_Hypothesis*>& hypList = _myMeshDS->GetHypothesis(it.Value());
- list<const SMESHDS_Hypothesis*>::const_iterator hyp = hypList.begin();
+ const std::list<const SMESHDS_Hypothesis*>& hypList = _myMeshDS->GetHypothesis(it.Value());
+ std::list<const SMESHDS_Hypothesis*>::const_iterator hyp = hypList.begin();
for ( ; hyp != hypList.end(); hyp++ ) {
const SMESH_Hypothesis * h = cSMESH_Hyp( *hyp );
- if (aFilter.IsOk( h, it.Value() ))
+ if (aFilter.IsOk( h, it.Value() )) {
+ if ( assignedTo ) *assignedTo = it.Value();
return h;
+ }
}
}
}
bool mainHypFound = false;
// fill in hypTypes
- list<const SMESHDS_Hypothesis*>::const_iterator hyp;
+ std::list<const SMESHDS_Hypothesis*>::const_iterator hyp;
for ( hyp = aHypList.begin(); hyp != aHypList.end(); hyp++ ) {
if ( hypTypes.insert( (*hyp)->GetName() ).second )
nbHyps++;
// get hypos from aSubShape
{
- const list<const SMESHDS_Hypothesis*>& hypList = _myMeshDS->GetHypothesis(aSubShape);
+ const std::list<const SMESHDS_Hypothesis*>& hypList = _myMeshDS->GetHypothesis(aSubShape);
for ( hyp = hypList.begin(); hyp != hypList.end(); hyp++ )
if ( aFilter.IsOk (cSMESH_Hyp( *hyp ), aSubShape) &&
( cSMESH_Hyp(*hyp)->IsAuxiliary() || !mainHypFound ) &&
{
if ( !map.Add( it.Value() ))
continue;
- const list<const SMESHDS_Hypothesis*>& hypList = _myMeshDS->GetHypothesis(it.Value());
+ const std::list<const SMESHDS_Hypothesis*>& hypList = _myMeshDS->GetHypothesis(it.Value());
for ( hyp = hypList.begin(); hyp != hypList.end(); hyp++ )
if (aFilter.IsOk( cSMESH_Hyp( *hyp ), it.Value() ) &&
( cSMESH_Hyp(*hyp)->IsAuxiliary() || !mainHypFound ) &&
*/
//=============================================================================
-const list<SMESHDS_Command*> & SMESH_Mesh::GetLog() throw(SALOME_Exception)
+const std::list<SMESHDS_Command*> & SMESH_Mesh::GetLog() throw(SALOME_Exception)
{
Unexpect aCatch(SalomeException);
if(MYDEBUG) MESSAGE("SMESH_Mesh::GetLog");
int index = _myMeshDS->ShapeToIndex(aSubShape);
// for submeshes on GEOM Group
- if ( !index && aSubShape.ShapeType() == TopAbs_COMPOUND ) {
+ if (( !index || index > _nbSubShapes ) && aSubShape.ShapeType() == TopAbs_COMPOUND ) {
TopoDS_Iterator it( aSubShape );
if ( it.More() )
+ {
index = _myMeshDS->AddCompoundSubmesh( aSubShape, it.Value().ShapeType() );
+ if ( index > _nbSubShapes ) _nbSubShapes = index; // not to create sm for this group again
+ }
}
// if ( !index )
// return NULL; // neither sub-shape nor a group
*/
//================================================================================
-list<SMESH_subMesh*>
+std::list<SMESH_subMesh*>
SMESH_Mesh::GetGroupSubMeshesContaining(const TopoDS_Shape & aSubShape) const
throw(SALOME_Exception)
{
Unexpect aCatch(SalomeException);
- list<SMESH_subMesh*> found;
+ std::list<SMESH_subMesh*> found;
SMESH_subMesh * subMesh = GetSubMeshContaining(aSubShape);
if ( !subMesh )
return found;
// submeshes of groups have max IDs, so search from the map end
- map<int, SMESH_subMesh *>::const_reverse_iterator i_sm;
+ std::map<int, SMESH_subMesh *>::const_reverse_iterator i_sm;
for ( i_sm = _mapSubMesh.rbegin(); i_sm != _mapSubMesh.rend(); ++i_sm) {
SMESHDS_SubMesh * ds = i_sm->second->GetSubMeshDS();
if ( ds && ds->IsComplexSubmesh() ) {
bool SMESH_Mesh::HasDuplicatedGroupNamesMED()
{
set<string> aGroupNames;
- for ( map<int, SMESH_Group*>::iterator it = _mapGroup.begin(); it != _mapGroup.end(); it++ ) {
+ for ( std::map<int, SMESH_Group*>::iterator it = _mapGroup.begin(); it != _mapGroup.end(); it++ ) {
SMESH_Group* aGroup = it->second;
- string aGroupName = aGroup->GetName();
+ std::string aGroupName = aGroup->GetName();
aGroupName.resize(MAX_MED_GROUP_NAME_LENGTH);
if (!aGroupNames.insert(aGroupName).second)
return true;
}
void SMESH_Mesh::ExportMED(const char *file,
- const char* theMeshName,
- bool theAutoGroups,
- int theVersion)
+ const char* theMeshName,
+ bool theAutoGroups,
+ int theVersion)
throw(SALOME_Exception)
{
Unexpect aCatch(SalomeException);
set<string> aGroupNames;
char aString [256];
int maxNbIter = 10000; // to guarantee cycle finish
- for ( map<int, SMESH_Group*>::iterator it = _mapGroup.begin(); it != _mapGroup.end(); it++ ) {
+ for ( std::map<int, SMESH_Group*>::iterator it = _mapGroup.begin(); it != _mapGroup.end(); it++ ) {
SMESH_Group* aGroup = it->second;
SMESHDS_GroupBase* aGroupDS = aGroup->GetGroupDS();
if ( aGroupDS ) {
myWriter.SetMeshId(_idDoc);
// myWriter.SetGroups(_mapGroup);
- for ( map<int, SMESH_Group*>::iterator it = _mapGroup.begin(); it != _mapGroup.end(); it++ ) {
+ for ( std::map<int, SMESH_Group*>::iterator it = _mapGroup.begin(); it != _mapGroup.end(); it++ ) {
SMESH_Group* aGroup = it->second;
SMESHDS_GroupBase* aGroupDS = aGroup->GetGroupDS();
if ( aGroupDS ) {
- string aGroupName = aGroup->GetName();
+ std::string aGroupName = aGroup->GetName();
aGroupDS->SetStoreName( aGroupName.c_str() );
myWriter.AddGroup( aGroupDS );
}
*/
//================================================================================
+int SMESH_Mesh::Nb0DElements() throw(SALOME_Exception)
+{
+ Unexpect aCatch(SalomeException);
+ return _myMeshDS->GetMeshInfo().Nb0DElements();
+}
+
+//================================================================================
+/*!
+ * \brief Return number of edges of given order in the mesh
+ */
+//================================================================================
+
int SMESH_Mesh::NbEdges(SMDSAbs_ElementOrder order) throw(SALOME_Exception)
{
Unexpect aCatch(SalomeException);
SMESH_Group* SMESH_Mesh::AddGroup (const SMDSAbs_ElementType theType,
const char* theName,
- int& theId,
+ int& theId,
const TopoDS_Shape& theShape)
{
if (_mapGroup.find(_groupId) != _mapGroup.end())
*/
//=============================================================================
-list<int> SMESH_Mesh::GetGroupIds() const
+std::list<int> SMESH_Mesh::GetGroupIds() const
{
- list<int> anIds;
- for ( map<int, SMESH_Group*>::const_iterator it = _mapGroup.begin(); it != _mapGroup.end(); it++ )
+ std::list<int> anIds;
+ for ( std::map<int, SMESH_Group*>::const_iterator it = _mapGroup.begin(); it != _mapGroup.end(); it++ )
anIds.push_back( it->first );
return anIds;
save << clause << ".1) Number of " << orderStr << " triangles: \t" << nb3 << endl;
save << clause << ".2) Number of " << orderStr << " quadrangles:\t" << nb4 << endl;
if ( nb3 + nb4 != NbFaces(order) ) {
- map<int,int> myFaceMap;
+ std::map<int,int> myFaceMap;
SMDS_FaceIteratorPtr itFaces=_myMeshDS->facesIterator();
while( itFaces->more( ) ) {
int nbNodes = itFaces->next()->NbNodes();
save << clause << ".3) Number of " << orderStr << " prisms: \t" << nb6 << endl;
save << clause << ".4) Number of " << orderStr << " pyramids:\t" << nb5 << endl;
if ( nb8 + nb4 + nb5 + nb6 != NbVolumes(order) ) {
- map<int,int> myVolumesMap;
+ std::map<int,int> myVolumesMap;
SMDS_VolumeIteratorPtr itVolumes=_myMeshDS->volumesIterator();
while( itVolumes->more( ) ) {
int nbNodes = itVolumes->next()->NbNodes();
{
return _myMeshDS->GetElementType( id, iselem );
}
+
+//=============================================================================
+/*!
+ * \brief Convert group on geometry into standalone group
+ */
+//=============================================================================
+
+SMESH_Group* SMESH_Mesh::ConvertToStandalone ( int theGroupID )
+{
+ SMESH_Group* aGroup = 0;
+ std::map < int, SMESH_Group * >::iterator itg = _mapGroup.find( theGroupID );
+ if ( itg == _mapGroup.end() )
+ return aGroup;
+
+ SMESH_Group* anOldGrp = (*itg).second;
+ SMESHDS_GroupBase* anOldGrpDS = anOldGrp->GetGroupDS();
+ if ( !anOldGrp || !anOldGrpDS )
+ return aGroup;
+
+ // create new standalone group
+ aGroup = new SMESH_Group (theGroupID, this, anOldGrpDS->GetType(), anOldGrp->GetName() );
+ _mapGroup[theGroupID] = aGroup;
+
+ SMESHDS_Group* aNewGrpDS = dynamic_cast<SMESHDS_Group*>( aGroup->GetGroupDS() );
+ GetMeshDS()->RemoveGroup( anOldGrpDS );
+ GetMeshDS()->AddGroup( aNewGrpDS );
+
+ // add elements (or nodes) into new created group
+ SMDS_ElemIteratorPtr anItr = anOldGrpDS->GetElements();
+ while ( anItr->more() )
+ aNewGrpDS->Add( (anItr->next())->GetID() );
+
+ // remove old group
+ delete anOldGrp;
+
+ return aGroup;
+}
+
