1 // Copyright (C) 2007-2015 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 );
92 std::string getOutputFileName();
93 void removeOutputFile();
94 std::string _outputFileName;
96 std::streambuf* _coutBuffer; // to re-/store cout.rdbuf()
99 //=============================================================================
101 * \brief This class calls the NETGEN mesher of OCC geometry
103 //=============================================================================
105 class NETGENPLUGIN_EXPORT NETGENPlugin_Mesher
108 // ---------- PUBLIC METHODS ----------
110 NETGENPlugin_Mesher (SMESH_Mesh* mesh, const TopoDS_Shape& aShape,
111 const bool isVolume);
112 ~NETGENPlugin_Mesher();
113 void SetSelfPointer( NETGENPlugin_Mesher ** ptr );
115 void SetParameters(const NETGENPlugin_Hypothesis* hyp);
116 void SetParameters(const NETGENPlugin_SimpleHypothesis_2D* hyp);
117 void SetViscousLayers2DAssigned(bool isAssigned) { _isViscousLayers2D = isAssigned; }
121 bool Evaluate(MapShapeNbElems& aResMap);
123 double GetProgress(const SMESH_Algo* holder,
124 const int * algoProgressTic,
125 const double * algoProgress) const;
127 static void PrepareOCCgeometry(netgen::OCCGeometry& occgeom,
128 const TopoDS_Shape& shape,
130 std::list< SMESH_subMesh* > * meshedSM=0,
131 NETGENPlugin_Internals* internalShapes=0);
133 static double GetDefaultMinSize(const TopoDS_Shape& shape,
134 const double maxSize);
136 static void RestrictLocalSize(netgen::Mesh& ngMesh,
139 const bool overrideMinH=true);
141 static int FillSMesh(const netgen::OCCGeometry& occgeom,
142 netgen::Mesh& ngMesh,
143 const NETGENPlugin_ngMeshInfo& initState,
145 std::vector<const SMDS_MeshNode*>& nodeVec,
146 SMESH_Comment& comment,
147 SMESH_MesherHelper* quadHelper=0);
149 bool FillNgMesh(netgen::OCCGeometry& occgeom,
150 netgen::Mesh& ngMesh,
151 std::vector<const SMDS_MeshNode*>& nodeVec,
152 const std::list< SMESH_subMesh* > & meshedSM,
153 SMESH_MesherHelper* quadHelper=0,
154 SMESH_ProxyMesh::Ptr proxyMesh=SMESH_ProxyMesh::Ptr());
156 static void FixIntFaces(const netgen::OCCGeometry& occgeom,
157 netgen::Mesh& ngMesh,
158 NETGENPlugin_Internals& internalShapes);
160 static void AddIntVerticesInFaces(const netgen::OCCGeometry& occgeom,
161 netgen::Mesh& ngMesh,
162 std::vector<const SMDS_MeshNode*>& nodeVec,
163 NETGENPlugin_Internals& internalShapes);
165 static void AddIntVerticesInSolids(const netgen::OCCGeometry& occgeom,
166 netgen::Mesh& ngMesh,
167 std::vector<const SMDS_MeshNode*>& nodeVec,
168 NETGENPlugin_Internals& internalShapes);
170 static SMESH_ComputeErrorPtr
171 AddSegmentsToMesh(netgen::Mesh& ngMesh,
172 netgen::OCCGeometry& geom,
173 const TSideVector& wires,
174 SMESH_MesherHelper& helper,
175 std::vector< const SMDS_MeshNode* > & nodeVec,
176 const bool overrideMinH=true);
178 void SetDefaultParameters();
180 static void RemoveTmpFiles();
182 static SMESH_ComputeErrorPtr ReadErrors(const std::vector< const SMDS_MeshNode* >& nodeVec);
185 static void toPython( const netgen::Mesh* ngMesh,
186 const std::string& pyFile); // debug
191 const TopoDS_Shape& _shape;
195 bool _isViscousLayers2D;
196 netgen::Mesh* _ngMesh;
197 netgen::OCCGeometry* _occgeom;
200 volatile int _progressTic;
201 volatile double _ticTime; // normalized [0,1] compute time per a SMESH_Algo::_progressTic
202 volatile double _totalTime;
204 const NETGENPlugin_SimpleHypothesis_2D * _simpleHyp;
206 // a pointer to NETGENPlugin_Mesher* field of the holder, that will be
207 // nullified at destruction of this
208 NETGENPlugin_Mesher ** _ptrToMe;
211 //=============================================================================
213 * \brief Container of info needed to solve problems with internal shapes.
215 * Issue 0020676. It is made up as a class to be ready to extract from NETGEN
216 * and put in SMESH as soon as the same solution is needed somewhere else.
217 * The approach is to precompute internal edges in 2D and internal faces in 3D
218 * and put their mesh correctly (twice) into netgen mesh.
219 * In 2D, this class finds internal edges in faces and their vertices.
220 * In 3D, it additionally finds internal faces, their edges shared with other faces,
221 * and their vertices shared by several internal edges. Nodes built on the found
222 * shapes and mesh faces built on the found internal faces are to be doubled in
223 * netgen mesh to emulate a "crack"
225 * For internal faces a more simple solution is found, which is just to duplicate
226 * mesh faces on internal geom faces without modeling a "real crack". For this
227 * reason findBorderElements() is no more used anywhere.
229 //=============================================================================
231 class NETGENPLUGIN_EXPORT NETGENPlugin_Internals
236 std::map<int,int> _e2face;//!<edges and their vertices in faces where they are TopAbs_INTERNAL
237 std::map<int,std::list<int> > _f2v;//!<faces with internal vertices
239 std::set<int> _intShapes;
240 std::set<int> _borderFaces; //!< non-internal faces sharing the internal edge
241 std::map<int,std::list<int> > _s2v;//!<solids with internal vertices
244 NETGENPlugin_Internals( SMESH_Mesh& mesh, const TopoDS_Shape& shape, bool is3D );
246 SMESH_Mesh& getMesh() const;
248 bool isShapeToPrecompute(const TopoDS_Shape& s);
252 bool hasInternalEdges() const { return !_e2face.empty(); }
253 bool isInternalEdge( int id ) const { return _e2face.count( id ); }
254 const std::map<int,int>& getEdgesAndVerticesWithFaces() const { return _e2face; }
255 void getInternalEdges( TopTools_IndexedMapOfShape& fmap,
256 TopTools_IndexedMapOfShape& emap,
257 TopTools_IndexedMapOfShape& vmap,
258 std::list< SMESH_subMesh* > smToPrecompute[]);
260 bool hasInternalVertexInFace() const { return !_f2v.empty(); }
261 const std::map<int,std::list<int> >& getFacesWithVertices() const { return _f2v; }
265 bool hasInternalFaces() const { return !_intShapes.empty(); }
266 bool isInternalShape( int id ) const { return _intShapes.count( id ); }
267 void findBorderElements( std::set< const SMDS_MeshElement*, TIDCompare > & borderElems );
268 bool isBorderFace( int faceID ) const { return _borderFaces.count( faceID ); }
269 void getInternalFaces( TopTools_IndexedMapOfShape& fmap,
270 TopTools_IndexedMapOfShape& emap,
271 std::list< SMESH_subMesh* >& facesSM,
272 std::list< SMESH_subMesh* >& boundarySM);
274 bool hasInternalVertexInSolid() const { return !_s2v.empty(); }
275 bool hasInternalVertexInSolid(int soID ) const { return _s2v.count(soID); }
276 const std::map<int,std::list<int> >& getSolidsWithVertices() const { return _s2v; }