1 // Copyright (C) 2007-2011 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
23 // NETGENPlugin : C++ implementation
24 // File : NETGENPlugin_Mesher.hxx
25 // Author : Michael Sazonov (OCN)
29 #ifndef _NETGENPlugin_Mesher_HXX_
30 #define _NETGENPlugin_Mesher_HXX_
32 #include "NETGENPlugin_Defs.hxx"
33 #include "StdMeshers_FaceSide.hxx"
34 #include "SMDS_MeshElement.hxx"
35 #include "SMESH_Algo.hxx"
49 class TopTools_DataMapOfShapeShape;
50 class TopTools_IndexedMapOfShape;
51 class NETGENPlugin_Hypothesis;
52 class NETGENPlugin_SimpleHypothesis_2D;
53 class NETGENPlugin_Internals;
58 //=============================================================================
60 * \brief Struct storing nb of entities in netgen mesh
62 //=============================================================================
64 struct NETGENPlugin_ngMeshInfo
66 int _nbNodes, _nbSegments, _nbFaces, _nbVolumes;
67 NETGENPlugin_ngMeshInfo( netgen::Mesh* ngMesh=0);
70 //=============================================================================
72 * \brief This class calls the NETGEN mesher of OCC geometry
74 //=============================================================================
76 class NETGENPLUGIN_EXPORT NETGENPlugin_Mesher
79 // ---------- PUBLIC METHODS ----------
81 NETGENPlugin_Mesher (SMESH_Mesh* mesh, const TopoDS_Shape& aShape,
84 void SetParameters(const NETGENPlugin_Hypothesis* hyp);
85 void SetParameters(const NETGENPlugin_SimpleHypothesis_2D* hyp);
89 bool Evaluate(MapShapeNbElems& aResMap);
91 static void PrepareOCCgeometry(netgen::OCCGeometry& occgeom,
92 const TopoDS_Shape& shape,
94 std::list< SMESH_subMesh* > * meshedSM=0,
95 NETGENPlugin_Internals* internalShapes=0);
97 static int FillSMesh(const netgen::OCCGeometry& occgeom,
98 const netgen::Mesh& ngMesh,
99 const NETGENPlugin_ngMeshInfo& initState,
101 std::vector<const SMDS_MeshNode*>& nodeVec,
102 SMESH_Comment& comment);
104 bool fillNgMesh(const netgen::OCCGeometry& occgeom,
105 netgen::Mesh& ngMesh,
106 std::vector<const SMDS_MeshNode*>& nodeVec,
107 const std::list< SMESH_subMesh* > & meshedSM);
109 static void fixIntFaces(const netgen::OCCGeometry& occgeom,
110 netgen::Mesh& ngMesh,
111 NETGENPlugin_Internals& internalShapes);
113 static void addIntVerticesInFaces(const netgen::OCCGeometry& occgeom,
114 netgen::Mesh& ngMesh,
115 std::vector<const SMDS_MeshNode*>& nodeVec,
116 NETGENPlugin_Internals& internalShapes);
118 static void addIntVerticesInSolids(const netgen::OCCGeometry& occgeom,
119 netgen::Mesh& ngMesh,
120 std::vector<const SMDS_MeshNode*>& nodeVec,
121 NETGENPlugin_Internals& internalShapes);
123 void defaultParameters();
125 static void RemoveTmpFiles();
127 static SMESH_ComputeErrorPtr readErrors(const std::vector< const SMDS_MeshNode* >& nodeVec);
131 const TopoDS_Shape& _shape;
135 const NETGENPlugin_SimpleHypothesis_2D * _simpleHyp;
136 std::map< int, std::pair<int,int> > _faceDescriptors;
139 //=============================================================================
141 * \brief Container of info needed to solve problems with internal shapes.
143 * Issue 0020676. It is made up as a class to be ready to extract from NETGEN
144 * and put in SMESH as soon as the same solution is needed somewhere else.
145 * The approach is to precompute internal edges in 2D and internal faces in 3D
146 * and put their mesh correctly (twice) into netgen mesh.
147 * In 2D, this class finds internal edges in faces and their vertices.
148 * In 3D, it additionally finds internal faces, their edges shared with other faces,
149 * and their vertices shared by several internal edges. Nodes built on the found
150 * shapes and mesh faces built on the found internal faces are to be doubled in
151 * netgen mesh to emulate a "crack"
153 * For internal faces a more simple solution is found, which is just to duplicate
154 * mesh faces on internal geom faces without modeling a "real crack". For this
155 * reason findBorderElements() is no more used anywhere.
157 //=============================================================================
159 class NETGENPLUGIN_EXPORT NETGENPlugin_Internals
164 std::map<int,int> _e2face;//!<edges and their vertices in faces where they are TopAbs_INTERNAL
165 std::map<int,std::list<int> > _f2v;//!<faces with internal vertices
167 std::set<int> _intShapes;
168 std::set<int> _borderFaces; //!< non-intrnal faces sharing the internal edge
169 std::map<int,std::list<int> > _s2v;//!<solids with internal vertices
172 NETGENPlugin_Internals( SMESH_Mesh& mesh, const TopoDS_Shape& shape, bool is3D );
174 SMESH_Mesh& getMesh() const;
176 bool isShapeToPrecompute(const TopoDS_Shape& s);
180 bool hasInternalEdges() const { return !_e2face.empty(); }
181 bool isInternalEdge( int id ) const { return _e2face.count( id ); }
182 const std::map<int,int>& getEdgesAndVerticesWithFaces() const { return _e2face; }
183 void getInternalEdges( TopTools_IndexedMapOfShape& fmap,
184 TopTools_IndexedMapOfShape& emap,
185 TopTools_IndexedMapOfShape& vmap,
186 std::list< SMESH_subMesh* >& smToPrecompute);
188 bool hasInternalVertexInFace() const { return !_f2v.empty(); }
189 const std::map<int,std::list<int> >& getFacesWithVertices() const { return _f2v; }
193 bool hasInternalFaces() const { return !_intShapes.empty(); }
194 bool isInternalShape( int id ) const { return _intShapes.count( id ); }
195 void findBorderElements( std::set< const SMDS_MeshElement*, TIDCompare > & borderElems );
196 bool isBorderFace( int faceID ) const { return _borderFaces.count( faceID ); }
197 void getInternalFaces( TopTools_IndexedMapOfShape& fmap,
198 TopTools_IndexedMapOfShape& emap,
199 std::list< SMESH_subMesh* >& facesSM,
200 std::list< SMESH_subMesh* >& boundarySM);
202 bool hasInternalVertexInSolid() const { return !_s2v.empty(); }
203 bool hasInternalVertexInSolid(int soID ) const { return _s2v.count(soID); }
204 const std::map<int,std::list<int> >& getSolidsWithVertices() const { return _s2v; }
209 //================================================================================
211 * \brief It correctly initializes netgen library at constructor and
212 * correctly finishes using netgen library at destructor
214 //================================================================================
216 struct NETGENPLUGIN_EXPORT NETGENPlugin_NetgenLibWrapper
218 nglib::Ng_Mesh * _ngMesh;
219 NETGENPlugin_NetgenLibWrapper();
220 ~NETGENPlugin_NetgenLibWrapper();
221 void setMesh( nglib::Ng_Mesh* mesh );