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>
39 #include <TopTools_IndexedMapOfShape.hxx>
52 class SMESH_MesherHelper;
54 class NETGENPlugin_Hypothesis;
55 class NETGENPlugin_SimpleHypothesis_2D;
56 class NETGENPlugin_Internals;
61 //=============================================================================
63 * \brief Struct storing nb of entities in netgen mesh
65 //=============================================================================
67 struct NETGENPlugin_ngMeshInfo
69 int _nbNodes, _nbSegments, _nbFaces, _nbVolumes;
71 NETGENPlugin_ngMeshInfo( netgen::Mesh* ngMesh=0);
72 void transferLocalH( netgen::Mesh* fromMesh, netgen::Mesh* toMesh );
73 void restoreLocalH ( netgen::Mesh* ngMesh);
76 //================================================================================
78 * \brief It correctly initializes netgen library at constructor and
79 * correctly finishes using netgen library at destructor
81 //================================================================================
83 struct NETGENPLUGIN_EXPORT NETGENPlugin_NetgenLibWrapper
86 nglib::Ng_Mesh * _ngMesh;
88 NETGENPlugin_NetgenLibWrapper();
89 ~NETGENPlugin_NetgenLibWrapper();
90 void setMesh( nglib::Ng_Mesh* mesh );
92 static void RemoveTmpFiles();
93 static int& instanceCounter();
96 std::string getOutputFileName();
97 void removeOutputFile();
98 std::string _outputFileName;
102 std::streambuf* _coutBuffer; // to re-/store cout.rdbuf()
105 //=============================================================================
107 * \brief This class calls the NETGEN mesher of OCC geometry
109 //=============================================================================
111 class NETGENPLUGIN_EXPORT NETGENPlugin_Mesher
114 // ---------- PUBLIC METHODS ----------
116 NETGENPlugin_Mesher (SMESH_Mesh* mesh, const TopoDS_Shape& aShape,
117 const bool isVolume);
118 ~NETGENPlugin_Mesher();
119 void SetSelfPointer( NETGENPlugin_Mesher ** ptr );
121 void SetParameters(const NETGENPlugin_Hypothesis* hyp);
122 void SetParameters(const NETGENPlugin_SimpleHypothesis_2D* hyp);
123 void SetViscousLayers2DAssigned(bool isAssigned) { _isViscousLayers2D = isAssigned; }
124 static void SetLocalSize( netgen::OCCGeometry& occgeo, netgen::Mesh& ngMesh );
128 bool Evaluate(MapShapeNbElems& aResMap);
130 double GetProgress(const SMESH_Algo* holder,
131 const int * algoProgressTic,
132 const double * algoProgress) const;
134 static void PrepareOCCgeometry(netgen::OCCGeometry& occgeom,
135 const TopoDS_Shape& shape,
137 std::list< SMESH_subMesh* > * meshedSM=0,
138 NETGENPlugin_Internals* internalShapes=0);
140 static double GetDefaultMinSize(const TopoDS_Shape& shape,
141 const double maxSize);
143 static void RestrictLocalSize(netgen::Mesh& ngMesh,
146 const bool overrideMinH=true);
148 static int FillSMesh(const netgen::OCCGeometry& occgeom,
149 netgen::Mesh& ngMesh,
150 const NETGENPlugin_ngMeshInfo& initState,
152 std::vector<const SMDS_MeshNode*>& nodeVec,
153 SMESH_Comment& comment,
154 SMESH_MesherHelper* quadHelper=0);
156 bool FillNgMesh(netgen::OCCGeometry& occgeom,
157 netgen::Mesh& ngMesh,
158 std::vector<const SMDS_MeshNode*>& nodeVec,
159 const std::list< SMESH_subMesh* > & meshedSM,
160 SMESH_MesherHelper* quadHelper=0,
161 SMESH_ProxyMesh::Ptr proxyMesh=SMESH_ProxyMesh::Ptr());
163 static void FixIntFaces(const netgen::OCCGeometry& occgeom,
164 netgen::Mesh& ngMesh,
165 NETGENPlugin_Internals& internalShapes);
167 static bool FixFaceMesh(const netgen::OCCGeometry& occgeom,
168 netgen::Mesh& ngMesh,
171 static void AddIntVerticesInFaces(const netgen::OCCGeometry& occgeom,
172 netgen::Mesh& ngMesh,
173 std::vector<const SMDS_MeshNode*>& nodeVec,
174 NETGENPlugin_Internals& internalShapes);
176 static void AddIntVerticesInSolids(const netgen::OCCGeometry& occgeom,
177 netgen::Mesh& ngMesh,
178 std::vector<const SMDS_MeshNode*>& nodeVec,
179 NETGENPlugin_Internals& internalShapes);
181 static SMESH_ComputeErrorPtr
182 AddSegmentsToMesh(netgen::Mesh& ngMesh,
183 netgen::OCCGeometry& geom,
184 const TSideVector& wires,
185 SMESH_MesherHelper& helper,
186 std::vector< const SMDS_MeshNode* > & nodeVec,
187 const bool overrideMinH=true);
189 void SetDefaultParameters();
191 static SMESH_ComputeErrorPtr ReadErrors(const std::vector< const SMDS_MeshNode* >& nodeVec);
194 static void toPython( const netgen::Mesh* ngMesh,
195 const std::string& pyFile); // debug
200 const TopoDS_Shape& _shape;
204 bool _isViscousLayers2D;
205 netgen::Mesh* _ngMesh;
206 netgen::OCCGeometry* _occgeom;
209 volatile int _progressTic;
210 volatile double _ticTime; // normalized [0,1] compute time per a SMESH_Algo::_progressTic
211 volatile double _totalTime;
213 const NETGENPlugin_SimpleHypothesis_2D * _simpleHyp;
215 // a pointer to NETGENPlugin_Mesher* field of the holder, that will be
216 // nullified at destruction of this
217 NETGENPlugin_Mesher ** _ptrToMe;
220 //=============================================================================
222 * \brief Container of info needed to solve problems with internal shapes.
224 * Issue 0020676. It is made up as a class to be ready to extract from NETGEN
225 * and put in SMESH as soon as the same solution is needed somewhere else.
226 * The approach is to precompute internal edges in 2D and internal faces in 3D
227 * and put their mesh correctly (twice) into netgen mesh.
228 * In 2D, this class finds internal edges in faces and their vertices.
229 * In 3D, it additionally finds internal faces, their edges shared with other faces,
230 * and their vertices shared by several internal edges. Nodes built on the found
231 * shapes and mesh faces built on the found internal faces are to be doubled in
232 * netgen mesh to emulate a "crack"
234 * For internal faces a more simple solution is found, which is just to duplicate
235 * mesh faces on internal geom faces without modeling a "real crack". For this
236 * reason findBorderElements() is no more used anywhere.
238 //=============================================================================
240 class NETGENPLUGIN_EXPORT NETGENPlugin_Internals
245 std::map<int,int> _e2face;//!<edges and their vertices in faces where they are TopAbs_INTERNAL
246 std::map<int,std::list<int> > _f2v;//!<faces with internal vertices
248 std::set<int> _intShapes;
249 std::set<int> _borderFaces; //!< non-internal faces sharing the internal edge
250 std::map<int,std::list<int> > _s2v;//!<solids with internal vertices
253 NETGENPlugin_Internals( SMESH_Mesh& mesh, const TopoDS_Shape& shape, bool is3D );
255 SMESH_Mesh& getMesh() const;
257 bool isShapeToPrecompute(const TopoDS_Shape& s);
261 bool hasInternalEdges() const { return !_e2face.empty(); }
262 bool isInternalEdge( int id ) const { return _e2face.count( id ); }
263 const std::map<int,int>& getEdgesAndVerticesWithFaces() const { return _e2face; }
264 void getInternalEdges( TopTools_IndexedMapOfShape& fmap,
265 TopTools_IndexedMapOfShape& emap,
266 TopTools_IndexedMapOfShape& vmap,
267 std::list< SMESH_subMesh* > smToPrecompute[]);
269 bool hasInternalVertexInFace() const { return !_f2v.empty(); }
270 const std::map<int,std::list<int> >& getFacesWithVertices() const { return _f2v; }
274 bool hasInternalFaces() const { return !_intShapes.empty(); }
275 bool isInternalShape( int id ) const { return _intShapes.count( id ); }
276 void findBorderElements( std::set< const SMDS_MeshElement*, TIDCompare > & borderElems );
277 bool isBorderFace( int faceID ) const { return _borderFaces.count( faceID ); }
278 void getInternalFaces( TopTools_IndexedMapOfShape& fmap,
279 TopTools_IndexedMapOfShape& emap,
280 std::list< SMESH_subMesh* >& facesSM,
281 std::list< SMESH_subMesh* >& boundarySM);
283 bool hasInternalVertexInSolid() const { return !_s2v.empty(); }
284 bool hasInternalVertexInSolid(int soID ) const { return _s2v.count(soID); }
285 const std::map<int,std::list<int> >& getSolidsWithVertices() const { return _s2v; }