1 // Copyright (C) 2007-2013 CEA/DEN, EDF R&D, OPEN CASCADE
3 // Copyright (C) 2003-2007 OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
4 // CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
6 // This library is free software; you can redistribute it and/or
7 // modify it under the terms of the GNU Lesser General Public
8 // License as published by the Free Software Foundation; either
9 // version 2.1 of the License.
11 // This library is distributed in the hope that it will be useful,
12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 // Lesser General Public License for more details.
16 // You should have received a copy of the GNU Lesser General Public
17 // License along with this library; if not, write to the Free Software
18 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
22 // File : StdMeshers_Projection_1D2D.cxx
24 // Author : Edward AGAPOV (eap)
26 #include "StdMeshers_Projection_1D2D.hxx"
28 #include "SMESH_Gen.hxx"
29 #include "SMESH_MesherHelper.hxx"
30 #include "SMESH_subMesh.hxx"
31 #include "SMESH_subMeshEventListener.hxx"
32 #include "StdMeshers_FaceSide.hxx"
33 #include "StdMeshers_ProjectionSource2D.hxx"
34 #include "StdMeshers_ProjectionUtils.hxx"
37 #include <TopExp_Explorer.hxx>
43 // --------------------------------------------------------------------------------
45 * \brief an event listener updating submehses of EDGEs according to
46 * events on the target FACE submesh
48 struct EventProparatorToEdges : public SMESH_subMeshEventListener
50 EventProparatorToEdges(): SMESH_subMeshEventListener(/*isDeletable=*/false,
51 "Projection_1D2D::EventProparatorToEdges")
53 static EventProparatorToEdges* Instance() { static EventProparatorToEdges E; return &E; }
55 static void Set(SMESH_subMesh* faceSubMesh)
57 SMESH_subMeshEventListenerData* edgeSubMeshes =
58 new SMESH_subMeshEventListenerData(/*isDeletable=*/true);
59 SMESH_Mesh* mesh = faceSubMesh->GetFather();
60 TopExp_Explorer eExp( faceSubMesh->GetSubShape(), TopAbs_EDGE );
61 for ( ; eExp.More(); eExp.Next() )
62 edgeSubMeshes->mySubMeshes.push_back( mesh->GetSubMesh( eExp.Current() ));
65 faceSubMesh->SetEventListener( Instance(), edgeSubMeshes, faceSubMesh );
68 // --------------------------------------------------------------------------------
70 * \brief Structure used to temporary remove EventProparatorToEdges from faceSubMesh
71 * in order to prevent propagation of CLEAN event from FACE to EDGEs during
72 * StdMeshers_Projection_1D2D::Compute(). The CLEAN event is emmited by Pattern mapper
73 * and causes removal of faces generated on adjacent FACEs.
75 struct UnsetterOfEventProparatorToEdges
77 SMESH_subMesh* _faceSubMesh;
78 UnsetterOfEventProparatorToEdges( SMESH_subMesh* faceSubMesh ):_faceSubMesh(faceSubMesh)
80 faceSubMesh->DeleteEventListener( EventProparatorToEdges::Instance() );
82 ~UnsetterOfEventProparatorToEdges()
84 EventProparatorToEdges::Set(_faceSubMesh);
89 //=======================================================================
90 //function : StdMeshers_Projection_1D2D
92 //=======================================================================
94 StdMeshers_Projection_1D2D::StdMeshers_Projection_1D2D(int hypId, int studyId, SMESH_Gen* gen)
95 :StdMeshers_Projection_2D(hypId, studyId, gen)
97 _name = "Projection_1D2D";
98 _requireDiscreteBoundary = false;
99 _supportSubmeshes = true;
102 //=======================================================================
105 //=======================================================================
107 bool StdMeshers_Projection_1D2D::Compute(SMESH_Mesh& theMesh, const TopoDS_Shape& theShape)
109 UnsetterOfEventProparatorToEdges eventBarrier( theMesh.GetSubMesh( theShape ));
113 if ( !StdMeshers_Projection_2D::Compute(theMesh, theShape))
116 // 2) Create segments
118 SMESHDS_Mesh * meshDS = theMesh.GetMeshDS();
120 SMESHDS_SubMesh * faceSubMesh = meshDS->MeshElements( theShape );
121 if ( !faceSubMesh || faceSubMesh->NbElements() == 0 ) return false;
122 _quadraticMesh = faceSubMesh->GetElements()->next()->IsQuadratic();
124 SMESH_MesherHelper helper( theMesh );
125 helper.SetSubShape( theShape );
127 TopoDS_Face F = TopoDS::Face( theShape );
129 TSideVector wires = StdMeshers_FaceSide::GetFaceWires( F, theMesh,
130 /*ignoreMediumNodes=*/false, err);
131 if ( err && !err->IsOK() )
134 for ( size_t iWire = 0; iWire < wires.size(); ++iWire )
136 vector<const SMDS_MeshNode*> nodes = wires[ iWire ]->GetOrderedNodes();
138 return error("Wrong nodes on a wire");
140 // check that all nodes are shared by faces generated on F
141 for ( size_t i = 0; i < nodes.size(); ++i )
143 SMDS_ElemIteratorPtr fIt = nodes[i]->GetInverseElementIterator(SMDSAbs_Face);
144 bool faceFound = false;
145 while ( !faceFound && fIt->more() )
146 faceFound = ( helper.GetSubShapeID() == fIt->next()->getshapeId() );
148 return error("The existing 1D mesh mismatches the generated 2D mesh");
151 const bool checkExisting = ( wires[ iWire ]->NbSegments() || helper.HasSeam() );
153 if ( _quadraticMesh )
155 for ( size_t i = 2; i < nodes.size(); i += 2 )
157 if ( checkExisting && meshDS->FindEdge( nodes[i-2], nodes[i], nodes[i-1]))
159 SMDS_MeshElement* e = meshDS->AddEdge( nodes[i-2], nodes[i], nodes[i-1] );
160 meshDS->SetMeshElementOnShape( e, nodes[i-1]->getshapeId() );
165 int edgeID = meshDS->ShapeToIndex( wires[ iWire ]->Edge(0) );
166 for ( size_t i = 1; i < nodes.size(); ++i )
168 if ( checkExisting && meshDS->FindEdge( nodes[i-1], nodes[i]))
170 SMDS_MeshElement* e = meshDS->AddEdge( nodes[i-1], nodes[i] );
171 if ( nodes[i-1]->getshapeId() != edgeID &&
172 nodes[i ]->getshapeId() != edgeID )
174 edgeID = helper.GetMediumPos( nodes[i-1], nodes[i] ).first;
175 if ( edgeID < 1 ) edgeID = helper.GetSubShapeID();
177 meshDS->SetMeshElementOnShape( e, edgeID );
185 //=======================================================================
186 //function : Evaluate
188 //=======================================================================
190 bool StdMeshers_Projection_1D2D::Evaluate(SMESH_Mesh& theMesh,
191 const TopoDS_Shape& theShape,
192 MapShapeNbElems& aResMap)
194 if ( !StdMeshers_Projection_2D::Evaluate(theMesh,theShape,aResMap))
197 TopoDS_Shape srcFace = _sourceHypo->GetSourceFace();
198 SMESH_Mesh * srcMesh = _sourceHypo->GetSourceMesh();
199 if ( !srcMesh ) srcMesh = & theMesh;
200 SMESH_subMesh* srcFaceSM = srcMesh->GetSubMesh( srcFace );
202 namespace SPU = StdMeshers_ProjectionUtils;
203 SPU::TShapeShapeMap shape2ShapeMap;
204 SPU::InitVertexAssociation( _sourceHypo, shape2ShapeMap );
205 if ( !SPU::FindSubShapeAssociation( theShape, &theMesh, srcFace, srcMesh, shape2ShapeMap))
206 return error(COMPERR_BAD_SHAPE,"Topology of source and target faces seems different" );
208 MapShapeNbElems srcResMap;
209 if ( !srcFaceSM->IsMeshComputed() )
210 _gen->Evaluate( *srcMesh, srcFace, srcResMap);
212 SMESH_subMeshIteratorPtr smIt = srcFaceSM->getDependsOnIterator(/*includeSelf=*/false,
213 /*complexShapeFirst=*/true);
214 while ( smIt->more() )
216 SMESH_subMesh* srcSM = smIt->next();
217 TopAbs_ShapeEnum shapeType = srcSM->GetSubShape().ShapeType();
218 if ( shapeType == TopAbs_EDGE )
220 std::vector<int> aVec;
221 SMESHDS_SubMesh* srcSubMeshDS = srcSM->GetSubMeshDS();
222 if ( srcSubMeshDS && srcSubMeshDS->NbElements() )
224 aVec.resize(SMDSEntity_Last, 0);
225 SMDS_ElemIteratorPtr eIt = srcSubMeshDS->GetElements();
226 _quadraticMesh = ( eIt->more() && eIt->next()->IsQuadratic() );
228 aVec[SMDSEntity_Node] = srcSubMeshDS->NbNodes();
229 aVec[_quadraticMesh ? SMDSEntity_Quad_Edge : SMDSEntity_Edge] = srcSubMeshDS->NbElements();
233 if ( srcResMap.empty() )
234 if ( !_gen->Evaluate( *srcMesh, srcSM->GetSubShape(), srcResMap ))
235 return error(COMPERR_BAD_INPUT_MESH,"Source mesh not evaluatable");
236 aVec = srcResMap[ srcSM ];
238 return error(COMPERR_BAD_INPUT_MESH,"Source mesh is wrongly evaluated");
240 TopoDS_Shape tgtEdge = shape2ShapeMap( srcSM->GetSubShape(), /*isSrc=*/true );
241 SMESH_subMesh* tgtSM = theMesh.GetSubMesh( tgtEdge );
242 aResMap.insert(std::make_pair(tgtSM,aVec));
244 if ( shapeType == TopAbs_VERTEX ) break;
250 //=======================================================================
251 //function : SetEventListener
252 //purpose : Sets a default event listener to submesh of the source face.
253 // faceSubMesh - submesh where algo is set
254 // After being set, event listener is notified on each event of a submesh.
255 // This method is called when a submesh gets HYP_OK algo_state.
256 // Arranges that CLEAN event is translated from source submesh to
257 // the faceSubMesh submesh.
258 //=======================================================================
260 void StdMeshers_Projection_1D2D::SetEventListener(SMESH_subMesh* faceSubMesh)
262 // set a listener of events on a source submesh
263 StdMeshers_Projection_2D::SetEventListener(faceSubMesh);
265 // set a listener to the target FACE submesh in order to update submehses
266 // of EDGEs according to events on the target FACE submesh
267 EventProparatorToEdges::Set( faceSubMesh );