-// SMESHGUI_Filter : Filters for VTK viewer
+// Copyright (C) 2007-2021 CEA/DEN, EDF R&D, OPEN CASCADE
//
-// Copyright (C) 2003 OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
-// CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
+// 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.
-//
-// 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
+// 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, or (at your option) any later version.
//
+// 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
//
-// File : SMESHGUI_Filter.cxx
-// Author : Sergey LITONIN
-// Module : SMESH
+// SMESHGUI_Filter : Filters for VTK viewer
+// File : SMESHGUI_Filter.cxx
+// Author : Sergey LITONIN, Open CASCADE S.A.S.
+// SMESH includes
+//
#include "SMESHGUI_Filter.h"
-#include <vtkCell.h>
+#include "SMESHGUI_Utils.h"
-#include <gp_Vec.hxx>
-#include <Precision.hxx>
-#include "SMESH_Actor.h"
-#include "SMESHGUI.h"
+#include <SMESH_Actor.h>
+#include <SMDS_Mesh.hxx>
+#include <SMDSAbs_ElementType.hxx>
-IMPLEMENT_STANDARD_HANDLE(SMESHGUI_Filter, VTKViewer_Filter)
IMPLEMENT_STANDARD_RTTIEXT(SMESHGUI_Filter, VTKViewer_Filter)
+IMPLEMENT_STANDARD_RTTIEXT(SMESHGUI_PredicateFilter, SMESHGUI_Filter)
+IMPLEMENT_STANDARD_RTTIEXT(SMESHGUI_QuadrangleFilter, SMESHGUI_Filter)
+IMPLEMENT_STANDARD_RTTIEXT(SMESHGUI_TriangleFilter, SMESHGUI_Filter)
+IMPLEMENT_STANDARD_RTTIEXT(SMESHGUI_FacesFilter, SMESHGUI_Filter)
+IMPLEMENT_STANDARD_RTTIEXT(SMESHGUI_VolumesFilter, SMESHGUI_Filter)
+IMPLEMENT_STANDARD_RTTIEXT(SMESHGUI_VolumeShapeFilter, SMESHGUI_Filter)
/*
- Class : SMESHGUI_Filter
+ Class : SMESHGUI_PredicateFilter
Description : Selection filter for VTK viewer. This class aggregate object
- of SMESH_Filter class and uses it for verification of criterion
+ of SMESH_Predicate class and uses it for verification of criterion
*/
//=======================================================================
-// name : SMESHGUI_Filter::SMESHGUI_Filter
+// name : SMESHGUI_PredicateFilter::SMESHGUI_PredicateFilter
// Purpose : Constructor
//=======================================================================
-SMESHGUI_Filter::SMESHGUI_Filter()
+SMESHGUI_PredicateFilter::SMESHGUI_PredicateFilter()
{
- myActor = 0;
}
-SMESHGUI_Filter::~SMESHGUI_Filter()
+SMESHGUI_PredicateFilter::~SMESHGUI_PredicateFilter()
{
}
//=======================================================================
-// name : SMESHGUI_Filter::IsValid
+// name : SMESHGUI_PredicateFilter::IsValid
// Purpose : Verify whether entry id satisfies to criterion of the filter
//=======================================================================
-bool SMESHGUI_Filter::IsValid( const int theCellId ) const
+bool SMESHGUI_PredicateFilter::IsValid( const vtkIdType theCellId ) const
{
if ( myActor == 0 || myPred->_is_nil() )
return false;
- SMESH_Actor* anActor = ( SMESH_Actor* )myActor;
+ SMESH_Actor* anActor = dynamic_cast<SMESH_Actor*>( myActor );
+ if ( !anActor || anActor->GetObject() == 0 )
+ return false;
- int aMeshId = anActor->GetElemObjId( theCellId );
+ SMDS_Mesh* aMesh = anActor->GetObject()->GetMesh();
+ SMDSAbs_ElementType anElemType = (SMDSAbs_ElementType)myPred->GetElementType();
+ int aMeshId = anElemType == SMDSAbs_Node ? anActor->GetNodeObjId( theCellId )
+ : anActor->GetElemObjId( theCellId );
+ // if type of element != type of predicate return true because
+ // this predicate is not intended for filtering sush elements
+ const SMDS_MeshElement* anElem = anElemType == SMDSAbs_Node ? aMesh->FindNode( aMeshId )
+ : aMesh->FindElement( aMeshId );
+ // here we guess that predicate element type can not be All in case of node selection
+ if ( !anElem || (anElemType != SMDSAbs_All && anElem->GetType() != anElemType) )
+ return false;
+
return myPred->IsSatisfy( aMeshId );
}
//=======================================================================
-// name : SMESHGUI_Filter::SetPredicate
-// Purpose : Set new pridicate to the filter
+// name : SMESHGUI_PredicateFilter::IsValid
+// Purpose : Verify whether entry id satisfies to criterion of the filter
//=======================================================================
-void SMESHGUI_Filter::SetPredicate( SMESH::Predicate_ptr thePred )
+bool SMESHGUI_PredicateFilter::IsObjValid( const int theObjId ) const
{
- myPred = thePred;
+ if ( myActor == 0 || myPred->_is_nil() )
+ return false;
+
+ SMESH_Actor* anActor = dynamic_cast< SMESH_Actor* >( myActor );
+ if ( !anActor || anActor->GetObject() == 0 )
+ return false;
+
+ SMDS_Mesh* aMesh = anActor->GetObject()->GetMesh();
+ SMDSAbs_ElementType anElemType = (SMDSAbs_ElementType)myPred->GetElementType();
+
+ // if type of element != type of predicate return true because
+ // this predicate is not intended for filtering sush elements
+ const SMDS_MeshElement* anElem = anElemType == SMDSAbs_Node ? aMesh->FindNode( theObjId )
+ : aMesh->FindElement( theObjId );
+ // here we guess that predicate element type can not be All in case of node selection
+ if ( !anElem || (anElemType != SMDSAbs_All && anElem->GetType() != anElemType) )
+ return false;
+
+ return myPred->IsSatisfy( theObjId );
}
//=======================================================================
-// name : SMESHGUI_Filter::GetActor
-// Purpose : Get actor of the filter
+// name : SMESHGUI_PredicateFilter::IsNodeFilter
+// Purpose : Returns true if filter is intended for nodes
//=======================================================================
-SALOME_Actor* SMESHGUI_Filter::GetActor() const
+bool SMESHGUI_PredicateFilter::IsNodeFilter() const
{
- return myActor;
+ return GetId() == SMESH::NodeFilter;
}
//=======================================================================
-// name : SMESHGUI_Filter::SetActor
+// name : SMESHGUI_PredicateFilter::SetPredicate
+// Purpose : Set new pridicate to the filter
+//=======================================================================
+void SMESHGUI_PredicateFilter::SetPredicate( SMESH::Predicate_ptr thePred )
+{
+ myPred = SMESH::Predicate::_duplicate( thePred );
+}
+
+//=======================================================================
+// name : SMESHGUI_PredicateFilter::SetActor
// Purpose : Set new actor
//=======================================================================
-void SMESHGUI_Filter::SetActor( SALOME_Actor* theActor )
+void SMESHGUI_PredicateFilter::SetActor( SALOME_Actor* theActor )
{
if ( myActor == theActor )
return;
- VTKViewer_Filter::SetActor( theActor );
+ SMESHGUI_Filter::SetActor( theActor );
if ( myActor != 0 && !myPred->_is_nil() )
{
- Handle(SALOME_InteractiveObject) anIO = myActor->getIO();
+ SALOME_Actor* sActor = dynamic_cast<SALOME_Actor*>( myActor );
+ Handle(SALOME_InteractiveObject) anIO;
+ if( sActor )
+ anIO = sActor->getIO();
if ( !anIO.IsNull() )
{
- Standard_Boolean aRes = false;
- SMESH::SMESH_Mesh_ptr aMeshPtr = SMESHGUI::GetSMESHGUI()->ConvertIOinMesh( anIO, aRes );
- if ( aRes )
- myPred->SetMesh( aMeshPtr );
+ SMESH::SMESH_Mesh_var aMesh = SMESH::IObjectToInterface<SMESH::SMESH_Mesh>(anIO);
+ if(!aMesh->_is_nil())
+ myPred->SetMesh(aMesh);
}
}
}
+
+//=======================================================================
+// name : SMESHGUI_PredicateFilter::SetActor
+// Purpose : Get ID of the filter. Must return value from SMESHGUI_FilterType
+// enumeration. All filters must have different ids
+//=======================================================================
+int SMESHGUI_PredicateFilter::GetId() const
+{
+ if ( myPred->GetElementType() == SMESH::NODE ) return SMESH::NodeFilter;
+ else if ( myPred->GetElementType() == SMESH::EDGE ) return SMESH::EdgeFilter;
+ else if ( myPred->GetElementType() == SMESH::FACE ) return SMESH::FaceFilter;
+ else if ( myPred->GetElementType() == SMESH::VOLUME ) return SMESH::VolumeFilter;
+ else if ( myPred->GetElementType() == SMESH::ALL ) return SMESH::AllElementsFilter;
+ else return SMESH::UnknownFilter;
+}
+
+
+/*
+ Class : SMESHGUI_QuadrangleFilter
+ Description : Verify whether selected cell is quadrangle
+*/
+
+//=======================================================================
+// name : SMESHGUI_QuadrangleFilter::SMESHGUI_QuadrangleFilter
+// Purpose : Constructor
+//=======================================================================
+SMESHGUI_QuadrangleFilter::SMESHGUI_QuadrangleFilter()
+: SMESHGUI_Filter()
+{
+}
+
+SMESHGUI_QuadrangleFilter::~SMESHGUI_QuadrangleFilter()
+{
+}
+
+//=======================================================================
+// name : SMESHGUI_QuadrangleFilter::IsValid
+// Purpose : Verify whether selected cell is quadrangle
+//=======================================================================
+bool SMESHGUI_QuadrangleFilter::IsValid( const vtkIdType theCellId ) const
+{
+ if ( myActor == 0 )
+ return false;
+
+ SMESH_Actor* anActor = dynamic_cast< SMESH_Actor* >( myActor );
+ if ( !anActor || anActor->GetObject() == 0 )
+ return false;
+
+ SMDS_Mesh* aMesh = anActor->GetObject()->GetMesh();
+ const SMDS_MeshElement* anElem = aMesh->FindElement( anActor->GetElemObjId( theCellId ) );
+
+ return anElem && anElem->GetType() == SMDSAbs_Face &&
+ ( anElem->NbNodes() == ( anElem->IsQuadratic() ? 8 : 4 ));
+}
+
+//=======================================================================
+// name : SMESHGUI_QuadrangleFilter::IsValid
+// Purpose : Verify whether selected cell is quadrangle
+//=======================================================================
+bool SMESHGUI_QuadrangleFilter::IsObjValid( const int theObjId ) const
+{
+ if ( myActor == 0 )
+ return false;
+
+ SMESH_Actor* anActor = dynamic_cast< SMESH_Actor* >( myActor );
+ if ( !anActor || anActor->GetObject() == 0 )
+ return false;
+
+ SMDS_Mesh* aMesh = anActor->GetObject()->GetMesh();
+ const SMDS_MeshElement* anElem = aMesh->FindElement( theObjId );
+
+ return anElem && anElem->GetType() == SMDSAbs_Face &&
+ ( anElem->NbNodes() == ( anElem->IsQuadratic() ? 8 : 4 ));
+}
+
+//=======================================================================
+// name : SMESHGUI_QuadrangleFilter::SetActor
+// Purpose : Get ID of the filter. Must return value from SMESHGUI_FilterType
+// enumeration. All filters must have different ids
+//=======================================================================
+int SMESHGUI_QuadrangleFilter::GetId() const
+{
+ return SMESH::QuadFilter;
+}
+
+//=======================================================================
+// name : SMESHGUI_QuadrangleFilter::IsNodeFilter
+// Purpose : Returns true if filter is intended for nodes
+//=======================================================================
+bool SMESHGUI_QuadrangleFilter::IsNodeFilter() const
+{
+ return false;
+}
+
+
+/*
+ Class : SMESHGUI_TriangleFilter
+ Description : Verify whether selected cell is triangle
+*/
+
+
+//=======================================================================
+// name : SMESHGUI_TriangleFilter::SMESHGUI_TriangleFilter
+// Purpose : Constructor
+//=======================================================================
+SMESHGUI_TriangleFilter::SMESHGUI_TriangleFilter()
+: SMESHGUI_Filter()
+{
+}
+
+SMESHGUI_TriangleFilter::~SMESHGUI_TriangleFilter()
+{
+}
+
+//=======================================================================
+// name : SMESHGUI_TriangleFilter::IsValid
+// Purpose : Verify whether selected cell is triangle
+//=======================================================================
+bool SMESHGUI_TriangleFilter::IsValid( const vtkIdType theCellId ) const
+{
+ if ( myActor == 0 )
+ return false;
+
+ SMESH_Actor* anActor = dynamic_cast< SMESH_Actor* >( myActor );
+ if ( !anActor || anActor->GetObject() == 0 )
+ return false;
+
+ SMDS_Mesh* aMesh = anActor->GetObject()->GetMesh();
+ const SMDS_MeshElement* anElem = aMesh->FindElement( anActor->GetElemObjId( theCellId ) );
+
+ return anElem && anElem->GetType() == SMDSAbs_Face &&
+ ( anElem->NbNodes() == ( anElem->IsQuadratic() ? 6 : 3 ));
+}
+
+//=======================================================================
+// name : SMESHGUI_TriangleFilter::IsValid
+// Purpose : Verify whether selected cell is triangle
+//=======================================================================
+bool SMESHGUI_TriangleFilter::IsObjValid( const int theObjId ) const
+{
+ if ( myActor == 0 )
+ return false;
+
+ SMESH_Actor* anActor = dynamic_cast< SMESH_Actor* >( myActor );
+ if ( !anActor || anActor->GetObject() == 0 )
+ return false;
+
+ SMDS_Mesh* aMesh = anActor->GetObject()->GetMesh();
+ const SMDS_MeshElement* anElem = aMesh->FindElement( theObjId );
+
+ return anElem && anElem->GetType() == SMDSAbs_Face &&
+ ( anElem->NbNodes() == ( anElem->IsQuadratic() ? 6 : 3 ));
+}
+
+//=======================================================================
+// name : SMESHGUI_TriangleFilter::SetActor
+// Purpose : Get ID of the filter. Must return value from SMESHGUI_FilterType
+// enumeration. All filters must have different ids
+//=======================================================================
+int SMESHGUI_TriangleFilter::GetId() const
+{
+ return SMESH::TriaFilter;
+}
+
+//=======================================================================
+// name : SMESHGUI_TriangleFilter::IsNodeFilter
+// Purpose : Returns true if filter is intended for nodes
+//=======================================================================
+bool SMESHGUI_TriangleFilter::IsNodeFilter() const
+{
+ return false;
+}
+
+/*
+ Class : SMESHGUI_FacesFilter
+ Description : Verify whether selected cell is any face
+*/
+
+
+//=======================================================================
+// name : SMESHGUI_FacesFilter::SMESHGUI_FacesFilter
+// Purpose : Constructor
+//=======================================================================
+SMESHGUI_FacesFilter::SMESHGUI_FacesFilter()
+: SMESHGUI_Filter()
+{
+}
+
+SMESHGUI_FacesFilter::~SMESHGUI_FacesFilter()
+{
+}
+
+//=======================================================================
+// name : SMESHGUI_FacesFilter::IsValid
+// Purpose : Verify whether selected cell is face
+//=======================================================================
+bool SMESHGUI_FacesFilter::IsValid( const vtkIdType theCellId ) const
+{
+ if ( myActor == 0 )
+ return false;
+
+ SMESH_Actor* anActor = dynamic_cast< SMESH_Actor* >( myActor );
+ if ( !anActor || anActor->GetObject() == 0 )
+ return false;
+
+ SMDS_Mesh* aMesh = anActor->GetObject()->GetMesh();
+ const SMDS_MeshElement* anElem = aMesh->FindElement( anActor->GetElemObjId( theCellId ) );
+
+ return anElem && anElem->GetType() == SMDSAbs_Face;
+}
+
+//=======================================================================
+// name : SMESHGUI_FacesFilter::IsValid
+// Purpose : Verify whether selected cell is face
+//=======================================================================
+bool SMESHGUI_FacesFilter::IsObjValid( const int theObjId ) const
+{
+ if ( myActor == 0 )
+ return false;
+
+ SMESH_Actor* anActor = dynamic_cast< SMESH_Actor* >( myActor );
+ if ( !anActor || anActor->GetObject() == 0 )
+ return false;
+
+ SMDS_Mesh* aMesh = anActor->GetObject()->GetMesh();
+ const SMDS_MeshElement* anElem = aMesh->FindElement( theObjId );
+
+ return anElem && anElem->GetType() == SMDSAbs_Face;
+}
+
+//=======================================================================
+// name : SMESHGUI_FacesFilter::GetId
+// Purpose : Get ID of the filter. Must return value from SMESHGUI_FilterType
+// enumeration. All filters must have different ids
+//=======================================================================
+int SMESHGUI_FacesFilter::GetId() const
+{
+ return SMESH::FaceFilter;
+}
+
+//=======================================================================
+// name : SMESHGUI_FacesFilter::IsNodeFilter
+// Purpose : Returns true if filter is intended for nodes
+//=======================================================================
+bool SMESHGUI_FacesFilter::IsNodeFilter() const
+{
+ return false;
+}
+
+
+/*
+ Class : SMESHGUI_VolumesFilter
+ Description : Verify whether selected cell is any volume
+*/
+
+
+//=======================================================================
+// name : SMESHGUI_VolumesFilter::SMESHGUI_VolumesFilter
+// Purpose : Constructor
+//=======================================================================
+SMESHGUI_VolumesFilter::SMESHGUI_VolumesFilter()
+: SMESHGUI_Filter()
+{
+}
+
+SMESHGUI_VolumesFilter::~SMESHGUI_VolumesFilter()
+{
+}
+
+//=======================================================================
+// name : SMESHGUI_VolumesFilter::IsValid
+// Purpose : Verify whether selected cell is volume
+//=======================================================================
+bool SMESHGUI_VolumesFilter::IsValid( const vtkIdType theCellId ) const
+{
+ if ( myActor == 0 || theCellId < 1 )
+ return false;
+
+ SMESH_Actor* anActor = dynamic_cast< SMESH_Actor* >( myActor );
+ if ( !anActor || anActor->GetObject() == 0 )
+ return false;
+
+ SMDS_Mesh* aMesh = anActor->GetObject()->GetMesh();
+ const SMDS_MeshElement* anElem = aMesh->FindElement( anActor->GetElemObjId( theCellId ) );
+
+ return anElem && anElem->GetType() == SMDSAbs_Volume;
+}
+
+//=======================================================================
+// name : SMESHGUI_VolumesFilter::IsValid
+// Purpose : Verify whether selected cell is volume
+//=======================================================================
+bool SMESHGUI_VolumesFilter::IsObjValid( const int theObjId ) const
+{
+ if ( myActor == 0 )
+ return false;
+
+ SMESH_Actor* anActor = dynamic_cast< SMESH_Actor* >( myActor );
+ if ( !anActor || anActor->GetObject() == 0 )
+ return false;
+
+ SMDS_Mesh* aMesh = anActor->GetObject()->GetMesh();
+ const SMDS_MeshElement* anElem = aMesh->FindElement( theObjId );
+
+ return anElem && anElem->GetType() == SMDSAbs_Volume;
+}
+
+//=======================================================================
+// name : SMESHGUI_VolumesFilter::GetId
+// Purpose : Get ID of the filter. Must return value from SMESHGUI_FilterType
+// enumeration. All filters must have different ids
+//=======================================================================
+int SMESHGUI_VolumesFilter::GetId() const
+{
+ return SMESH::VolumeFilter;
+}
+
+//=======================================================================
+// name : SMESHGUI_VolumesFilter::IsNodeFilter
+// Purpose : Returns true if filter is intended for nodes
+//=======================================================================
+bool SMESHGUI_VolumesFilter::IsNodeFilter() const
+{
+ return false;
+}
+
+
+/*
+ Class : SMESHGUI_VolumeShapeFilter
+ Description : Verify whether selected cell is a volume of a certain shape
+*/
+
+
+//=======================================================================
+// name : SMESHGUI_VolumeShapeFilter::SMESHGUI_VolumeShapeFilter
+// Purpose : Constructor
+//=======================================================================
+SMESHGUI_VolumeShapeFilter::SMESHGUI_VolumeShapeFilter(const SMDSAbs_GeometryType shape)
+ : SMESHGUI_Filter(), myGeometryType( shape )
+{
+}
+
+//=======================================================================
+// name : SMESHGUI_VolumeShapeFilter::IsValid
+// Purpose : Verify whether selected cell is a volume of a certain shape
+//=======================================================================
+bool SMESHGUI_VolumeShapeFilter::IsValid( const vtkIdType theCellId ) const
+{
+ if ( myActor == 0 || theCellId < 1 )
+ return false;
+
+ SMESH_Actor* anActor = dynamic_cast< SMESH_Actor* >( myActor );
+ if ( !anActor || anActor->GetObject() == 0 )
+ return false;
+
+ SMDS_Mesh* aMesh = anActor->GetObject()->GetMesh();
+ const SMDS_MeshElement* anElem = aMesh->FindElement( anActor->GetElemObjId( theCellId ) );
+
+ return anElem && anElem->GetGeomType() == myGeometryType;
+}
+
+//=======================================================================
+// name : SMESHGUI_VolumeShapeFilter::IsValid
+// Purpose : Verify whether selected cell is volume
+//=======================================================================
+bool SMESHGUI_VolumeShapeFilter::IsObjValid( const int theObjId ) const
+{
+ if ( myActor == 0 )
+ return false;
+
+ SMESH_Actor* anActor = dynamic_cast< SMESH_Actor* >( myActor );
+ if ( !anActor || anActor->GetObject() == 0 )
+ return false;
+
+ SMDS_Mesh* aMesh = anActor->GetObject()->GetMesh();
+ const SMDS_MeshElement* anElem = aMesh->FindElement( theObjId );
+
+ return anElem && anElem->GetGeomType() == myGeometryType;
+}
+
+//=======================================================================
+// name : SMESHGUI_VolumeShapeFilter::GetId
+// Purpose : Get ID of the filter. Must return value from SMESHGUI_FilterType
+// enumeration. All filters must have different ids
+//=======================================================================
+int SMESHGUI_VolumeShapeFilter::GetId() const
+{
+ return GetId( myGeometryType );
+}
+
+//=======================================================================
+//function : GetId
+//purpose : Compose filter ID basing on
+//=======================================================================
+
+int SMESHGUI_VolumeShapeFilter::GetId( SMDSAbs_GeometryType shape )
+{
+ return SMESH::FirstGeometryTypeFilter + shape;
+}
+
+//=======================================================================
+// name : SMESHGUI_VolumeShapeFilter::IsNodeFilter
+// Purpose : Returns true if filter is intended for nodes
+//=======================================================================
+bool SMESHGUI_VolumeShapeFilter::IsNodeFilter() const
+{
+ return false;
+}
