1 // Copyright (C) 2007-2016 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, or (at your option) any later version.
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"
34 #include <StdMeshers_FaceSide.hxx>
35 #include <SMDS_MeshElement.hxx>
36 #include <SMESH_Algo.hxx>
37 #include <SMESH_ProxyMesh.hxx>
50 class SMESH_MesherHelper;
52 class TopTools_IndexedMapOfShape;
53 class NETGENPlugin_Hypothesis;
54 class NETGENPlugin_SimpleHypothesis_2D;
55 class NETGENPlugin_Internals;
60 //=============================================================================
62 * \brief Struct storing nb of entities in netgen mesh
64 //=============================================================================
66 struct NETGENPlugin_ngMeshInfo
68 int _nbNodes, _nbSegments, _nbFaces, _nbVolumes;
70 NETGENPlugin_ngMeshInfo( netgen::Mesh* ngMesh=0);
71 void transferLocalH( netgen::Mesh* fromMesh, netgen::Mesh* toMesh );
72 void restoreLocalH ( netgen::Mesh* ngMesh);
75 //================================================================================
77 * \brief It correctly initializes netgen library at constructor and
78 * correctly finishes using netgen library at destructor
80 //================================================================================
82 struct NETGENPLUGIN_EXPORT NETGENPlugin_NetgenLibWrapper
85 nglib::Ng_Mesh * _ngMesh;
87 NETGENPlugin_NetgenLibWrapper();
88 ~NETGENPlugin_NetgenLibWrapper();
89 void setMesh( nglib::Ng_Mesh* mesh );
91 static void RemoveTmpFiles();
92 static int& instanceCounter();
95 std::string getOutputFileName();
96 void removeOutputFile();
97 std::string _outputFileName;
101 std::streambuf* _coutBuffer; // to re-/store cout.rdbuf()
104 //=============================================================================
106 * \brief This class calls the NETGEN mesher of OCC geometry
108 //=============================================================================
110 class NETGENPLUGIN_EXPORT NETGENPlugin_Mesher
113 // ---------- PUBLIC METHODS ----------
115 NETGENPlugin_Mesher (SMESH_Mesh* mesh, const TopoDS_Shape& aShape,
116 const bool isVolume);
117 ~NETGENPlugin_Mesher();
118 void SetSelfPointer( NETGENPlugin_Mesher ** ptr );
120 void SetParameters(const NETGENPlugin_Hypothesis* hyp);
121 void SetParameters(const NETGENPlugin_SimpleHypothesis_2D* hyp);
122 void SetViscousLayers2DAssigned(bool isAssigned) { _isViscousLayers2D = isAssigned; }
126 bool Evaluate(MapShapeNbElems& aResMap);
128 double GetProgress(const SMESH_Algo* holder,
129 const int * algoProgressTic,
130 const double * algoProgress) const;
132 static void PrepareOCCgeometry(netgen::OCCGeometry& occgeom,
133 const TopoDS_Shape& shape,
135 std::list< SMESH_subMesh* > * meshedSM=0,
136 NETGENPlugin_Internals* internalShapes=0);
138 static double GetDefaultMinSize(const TopoDS_Shape& shape,
139 const double maxSize);
141 static void RestrictLocalSize(netgen::Mesh& ngMesh,
144 const bool overrideMinH=true);
146 static int FillSMesh(const netgen::OCCGeometry& occgeom,
147 netgen::Mesh& ngMesh,
148 const NETGENPlugin_ngMeshInfo& initState,
150 std::vector<const SMDS_MeshNode*>& nodeVec,
151 SMESH_Comment& comment,
152 SMESH_MesherHelper* quadHelper=0);
154 bool FillNgMesh(netgen::OCCGeometry& occgeom,
155 netgen::Mesh& ngMesh,
156 std::vector<const SMDS_MeshNode*>& nodeVec,
157 const std::list< SMESH_subMesh* > & meshedSM,
158 SMESH_MesherHelper* quadHelper=0,
159 SMESH_ProxyMesh::Ptr proxyMesh=SMESH_ProxyMesh::Ptr());
161 static void FixIntFaces(const netgen::OCCGeometry& occgeom,
162 netgen::Mesh& ngMesh,
163 NETGENPlugin_Internals& internalShapes);
165 static bool FixFaceMesh(const netgen::OCCGeometry& occgeom,
166 netgen::Mesh& ngMesh,
169 static void AddIntVerticesInFaces(const netgen::OCCGeometry& occgeom,
170 netgen::Mesh& ngMesh,
171 std::vector<const SMDS_MeshNode*>& nodeVec,
172 NETGENPlugin_Internals& internalShapes);
174 static void AddIntVerticesInSolids(const netgen::OCCGeometry& occgeom,
175 netgen::Mesh& ngMesh,
176 std::vector<const SMDS_MeshNode*>& nodeVec,
177 NETGENPlugin_Internals& internalShapes);
179 static SMESH_ComputeErrorPtr
180 AddSegmentsToMesh(netgen::Mesh& ngMesh,
181 netgen::OCCGeometry& geom,
182 const TSideVector& wires,
183 SMESH_MesherHelper& helper,
184 std::vector< const SMDS_MeshNode* > & nodeVec,
185 const bool overrideMinH=true);
187 void SetDefaultParameters();
189 static SMESH_ComputeErrorPtr ReadErrors(const std::vector< const SMDS_MeshNode* >& nodeVec);
192 static void toPython( const netgen::Mesh* ngMesh,
193 const std::string& pyFile); // debug
198 const TopoDS_Shape& _shape;
202 bool _isViscousLayers2D;
203 netgen::Mesh* _ngMesh;
204 netgen::OCCGeometry* _occgeom;
207 volatile int _progressTic;
208 volatile double _ticTime; // normalized [0,1] compute time per a SMESH_Algo::_progressTic
209 volatile double _totalTime;
211 const NETGENPlugin_SimpleHypothesis_2D * _simpleHyp;
213 // a pointer to NETGENPlugin_Mesher* field of the holder, that will be
214 // nullified at destruction of this
215 NETGENPlugin_Mesher ** _ptrToMe;
218 //=============================================================================
220 * \brief Container of info needed to solve problems with internal shapes.
222 * Issue 0020676. It is made up as a class to be ready to extract from NETGEN
223 * and put in SMESH as soon as the same solution is needed somewhere else.
224 * The approach is to precompute internal edges in 2D and internal faces in 3D
225 * and put their mesh correctly (twice) into netgen mesh.
226 * In 2D, this class finds internal edges in faces and their vertices.
227 * In 3D, it additionally finds internal faces, their edges shared with other faces,
228 * and their vertices shared by several internal edges. Nodes built on the found
229 * shapes and mesh faces built on the found internal faces are to be doubled in
230 * netgen mesh to emulate a "crack"
232 * For internal faces a more simple solution is found, which is just to duplicate
233 * mesh faces on internal geom faces without modeling a "real crack". For this
234 * reason findBorderElements() is no more used anywhere.
236 //=============================================================================
238 class NETGENPLUGIN_EXPORT NETGENPlugin_Internals
243 std::map<int,int> _e2face;//!<edges and their vertices in faces where they are TopAbs_INTERNAL
244 std::map<int,std::list<int> > _f2v;//!<faces with internal vertices
246 std::set<int> _intShapes;
247 std::set<int> _borderFaces; //!< non-internal faces sharing the internal edge
248 std::map<int,std::list<int> > _s2v;//!<solids with internal vertices
251 NETGENPlugin_Internals( SMESH_Mesh& mesh, const TopoDS_Shape& shape, bool is3D );
253 SMESH_Mesh& getMesh() const;
255 bool isShapeToPrecompute(const TopoDS_Shape& s);
259 bool hasInternalEdges() const { return !_e2face.empty(); }
260 bool isInternalEdge( int id ) const { return _e2face.count( id ); }
261 const std::map<int,int>& getEdgesAndVerticesWithFaces() const { return _e2face; }
262 void getInternalEdges( TopTools_IndexedMapOfShape& fmap,
263 TopTools_IndexedMapOfShape& emap,
264 TopTools_IndexedMapOfShape& vmap,
265 std::list< SMESH_subMesh* > smToPrecompute[]);
267 bool hasInternalVertexInFace() const { return !_f2v.empty(); }
268 const std::map<int,std::list<int> >& getFacesWithVertices() const { return _f2v; }
272 bool hasInternalFaces() const { return !_intShapes.empty(); }
273 bool isInternalShape( int id ) const { return _intShapes.count( id ); }
274 void findBorderElements( std::set< const SMDS_MeshElement*, TIDCompare > & borderElems );
275 bool isBorderFace( int faceID ) const { return _borderFaces.count( faceID ); }
276 void getInternalFaces( TopTools_IndexedMapOfShape& fmap,
277 TopTools_IndexedMapOfShape& emap,
278 std::list< SMESH_subMesh* >& facesSM,
279 std::list< SMESH_subMesh* >& boundarySM);
281 bool hasInternalVertexInSolid() const { return !_s2v.empty(); }
282 bool hasInternalVertexInSolid(int soID ) const { return _s2v.count(soID); }
283 const std::map<int,std::list<int> >& getSolidsWithVertices() const { return _s2v; }