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
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>
51 class TopTools_IndexedMapOfShape;
52 class NETGENPlugin_Hypothesis;
53 class NETGENPlugin_SimpleHypothesis_2D;
54 class NETGENPlugin_Internals;
59 //=============================================================================
61 * \brief Struct storing nb of entities in netgen mesh
63 //=============================================================================
65 struct NETGENPlugin_ngMeshInfo
67 int _nbNodes, _nbSegments, _nbFaces, _nbVolumes;
69 NETGENPlugin_ngMeshInfo( netgen::Mesh* ngMesh=0);
70 void transferLocalH( netgen::Mesh* fromMesh, netgen::Mesh* toMesh );
71 void restoreLocalH ( netgen::Mesh* ngMesh);
74 //================================================================================
76 * \brief It correctly initializes netgen library at constructor and
77 * correctly finishes using netgen library at destructor
79 //================================================================================
81 struct NETGENPLUGIN_EXPORT NETGENPlugin_NetgenLibWrapper
84 nglib::Ng_Mesh * _ngMesh;
86 NETGENPlugin_NetgenLibWrapper();
87 ~NETGENPlugin_NetgenLibWrapper();
88 void setMesh( nglib::Ng_Mesh* mesh );
91 std::string getOutputFileName();
92 void removeOutputFile();
93 std::string _outputFileName;
95 std::streambuf* _coutBuffer; // to re-/store cout.rdbuf()
98 //=============================================================================
100 * \brief This class calls the NETGEN mesher of OCC geometry
102 //=============================================================================
104 class NETGENPLUGIN_EXPORT NETGENPlugin_Mesher
107 // ---------- PUBLIC METHODS ----------
109 NETGENPlugin_Mesher (SMESH_Mesh* mesh, const TopoDS_Shape& aShape,
110 const bool isVolume);
111 ~NETGENPlugin_Mesher();
112 void SetSelfPointer( NETGENPlugin_Mesher ** ptr );
114 void SetParameters(const NETGENPlugin_Hypothesis* hyp);
115 void SetParameters(const NETGENPlugin_SimpleHypothesis_2D* hyp);
116 void SetViscousLayers2DAssigned(bool isAssigned) { _isViscousLayers2D = isAssigned; }
120 bool Evaluate(MapShapeNbElems& aResMap);
122 double GetProgress(const SMESH_Algo* holder,
123 const int * algoProgressTic,
124 const double * algoProgress) const;
126 static void PrepareOCCgeometry(netgen::OCCGeometry& occgeom,
127 const TopoDS_Shape& shape,
129 std::list< SMESH_subMesh* > * meshedSM=0,
130 NETGENPlugin_Internals* internalShapes=0);
132 static double GetDefaultMinSize(const TopoDS_Shape& shape,
133 const double maxSize);
135 static void RestrictLocalSize(netgen::Mesh& ngMesh, const gp_XYZ& p, const double size);
137 static int FillSMesh(const netgen::OCCGeometry& occgeom,
138 netgen::Mesh& ngMesh,
139 const NETGENPlugin_ngMeshInfo& initState,
141 std::vector<const SMDS_MeshNode*>& nodeVec,
142 SMESH_Comment& comment);
144 bool FillNgMesh(netgen::OCCGeometry& occgeom,
145 netgen::Mesh& ngMesh,
146 std::vector<const SMDS_MeshNode*>& nodeVec,
147 const std::list< SMESH_subMesh* > & meshedSM,
148 SMESH_ProxyMesh::Ptr proxyMesh=SMESH_ProxyMesh::Ptr());
150 static void FixIntFaces(const netgen::OCCGeometry& occgeom,
151 netgen::Mesh& ngMesh,
152 NETGENPlugin_Internals& internalShapes);
154 static void AddIntVerticesInFaces(const netgen::OCCGeometry& occgeom,
155 netgen::Mesh& ngMesh,
156 std::vector<const SMDS_MeshNode*>& nodeVec,
157 NETGENPlugin_Internals& internalShapes);
159 static void AddIntVerticesInSolids(const netgen::OCCGeometry& occgeom,
160 netgen::Mesh& ngMesh,
161 std::vector<const SMDS_MeshNode*>& nodeVec,
162 NETGENPlugin_Internals& internalShapes);
164 static SMESH_ComputeErrorPtr
165 AddSegmentsToMesh(netgen::Mesh& ngMesh,
166 netgen::OCCGeometry& geom,
167 const TSideVector& wires,
168 SMESH_MesherHelper& helper,
169 std::vector< const SMDS_MeshNode* > & nodeVec);
171 void SetDefaultParameters();
173 static void RemoveTmpFiles();
175 static SMESH_ComputeErrorPtr ReadErrors(const std::vector< const SMDS_MeshNode* >& nodeVec);
178 static void toPython( const netgen::Mesh* ngMesh,
179 const std::string& pyFile); // debug
184 const TopoDS_Shape& _shape;
188 bool _isViscousLayers2D;
189 netgen::Mesh* _ngMesh;
190 netgen::OCCGeometry* _occgeom;
193 volatile int _progressTic;
194 volatile double _ticTime; // normalized [0,1] compute time per a SMESH_Algo::_progressTic
195 volatile double _totalTime;
197 const NETGENPlugin_SimpleHypothesis_2D * _simpleHyp;
199 // a pointer to NETGENPlugin_Mesher* field of the holder, that will be
200 // nullified at destruction of this
201 NETGENPlugin_Mesher ** _ptrToMe;
204 //=============================================================================
206 * \brief Container of info needed to solve problems with internal shapes.
208 * Issue 0020676. It is made up as a class to be ready to extract from NETGEN
209 * and put in SMESH as soon as the same solution is needed somewhere else.
210 * The approach is to precompute internal edges in 2D and internal faces in 3D
211 * and put their mesh correctly (twice) into netgen mesh.
212 * In 2D, this class finds internal edges in faces and their vertices.
213 * In 3D, it additionally finds internal faces, their edges shared with other faces,
214 * and their vertices shared by several internal edges. Nodes built on the found
215 * shapes and mesh faces built on the found internal faces are to be doubled in
216 * netgen mesh to emulate a "crack"
218 * For internal faces a more simple solution is found, which is just to duplicate
219 * mesh faces on internal geom faces without modeling a "real crack". For this
220 * reason findBorderElements() is no more used anywhere.
222 //=============================================================================
224 class NETGENPLUGIN_EXPORT NETGENPlugin_Internals
229 std::map<int,int> _e2face;//!<edges and their vertices in faces where they are TopAbs_INTERNAL
230 std::map<int,std::list<int> > _f2v;//!<faces with internal vertices
232 std::set<int> _intShapes;
233 std::set<int> _borderFaces; //!< non-internal faces sharing the internal edge
234 std::map<int,std::list<int> > _s2v;//!<solids with internal vertices
237 NETGENPlugin_Internals( SMESH_Mesh& mesh, const TopoDS_Shape& shape, bool is3D );
239 SMESH_Mesh& getMesh() const;
241 bool isShapeToPrecompute(const TopoDS_Shape& s);
245 bool hasInternalEdges() const { return !_e2face.empty(); }
246 bool isInternalEdge( int id ) const { return _e2face.count( id ); }
247 const std::map<int,int>& getEdgesAndVerticesWithFaces() const { return _e2face; }
248 void getInternalEdges( TopTools_IndexedMapOfShape& fmap,
249 TopTools_IndexedMapOfShape& emap,
250 TopTools_IndexedMapOfShape& vmap,
251 std::list< SMESH_subMesh* > smToPrecompute[]);
253 bool hasInternalVertexInFace() const { return !_f2v.empty(); }
254 const std::map<int,std::list<int> >& getFacesWithVertices() const { return _f2v; }
258 bool hasInternalFaces() const { return !_intShapes.empty(); }
259 bool isInternalShape( int id ) const { return _intShapes.count( id ); }
260 void findBorderElements( std::set< const SMDS_MeshElement*, TIDCompare > & borderElems );
261 bool isBorderFace( int faceID ) const { return _borderFaces.count( faceID ); }
262 void getInternalFaces( TopTools_IndexedMapOfShape& fmap,
263 TopTools_IndexedMapOfShape& emap,
264 std::list< SMESH_subMesh* >& facesSM,
265 std::list< SMESH_subMesh* >& boundarySM);
267 bool hasInternalVertexInSolid() const { return !_s2v.empty(); }
268 bool hasInternalVertexInSolid(int soID ) const { return _s2v.count(soID); }
269 const std::map<int,std::list<int> >& getSolidsWithVertices() const { return _s2v; }