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_DataMapOfShapeShape;
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
84 std::string myOutputFile;
86 nglib::Ng_Mesh * _ngMesh;
87 NETGENPlugin_NetgenLibWrapper();
88 ~NETGENPlugin_NetgenLibWrapper();
89 void setMesh( nglib::Ng_Mesh* mesh );
90 std::string getOutputFileName();
91 void RemoveOutputFile();
94 //=============================================================================
96 * \brief This class calls the NETGEN mesher of OCC geometry
98 //=============================================================================
100 class NETGENPLUGIN_EXPORT NETGENPlugin_Mesher
103 // ---------- PUBLIC METHODS ----------
105 NETGENPlugin_Mesher (SMESH_Mesh* mesh, const TopoDS_Shape& aShape,
106 const bool isVolume);
108 void SetParameters(const NETGENPlugin_Hypothesis* hyp);
109 void SetParameters(const NETGENPlugin_SimpleHypothesis_2D* hyp);
110 void SetViscousLayers2DAssigned(bool isAssigned) { _isViscousLayers2D = isAssigned; }
114 bool Evaluate(MapShapeNbElems& aResMap);
116 static void PrepareOCCgeometry(netgen::OCCGeometry& occgeom,
117 const TopoDS_Shape& shape,
119 std::list< SMESH_subMesh* > * meshedSM=0,
120 NETGENPlugin_Internals* internalShapes=0);
122 static double GetDefaultMinSize(const TopoDS_Shape& shape,
123 const double maxSize);
125 static void RestrictLocalSize(netgen::Mesh& ngMesh, const gp_XYZ& p, const double size);
127 static int FillSMesh(const netgen::OCCGeometry& occgeom,
128 netgen::Mesh& ngMesh,
129 const NETGENPlugin_ngMeshInfo& initState,
131 std::vector<const SMDS_MeshNode*>& nodeVec,
132 SMESH_Comment& comment);
134 bool FillNgMesh(netgen::OCCGeometry& occgeom,
135 netgen::Mesh& ngMesh,
136 std::vector<const SMDS_MeshNode*>& nodeVec,
137 const std::list< SMESH_subMesh* > & meshedSM,
138 SMESH_ProxyMesh::Ptr proxyMesh=SMESH_ProxyMesh::Ptr());
140 static void FixIntFaces(const netgen::OCCGeometry& occgeom,
141 netgen::Mesh& ngMesh,
142 NETGENPlugin_Internals& internalShapes);
144 static void AddIntVerticesInFaces(const netgen::OCCGeometry& occgeom,
145 netgen::Mesh& ngMesh,
146 std::vector<const SMDS_MeshNode*>& nodeVec,
147 NETGENPlugin_Internals& internalShapes);
149 static void AddIntVerticesInSolids(const netgen::OCCGeometry& occgeom,
150 netgen::Mesh& ngMesh,
151 std::vector<const SMDS_MeshNode*>& nodeVec,
152 NETGENPlugin_Internals& internalShapes);
154 static SMESH_ComputeErrorPtr
155 AddSegmentsToMesh(netgen::Mesh& ngMesh,
156 netgen::OCCGeometry& geom,
157 const TSideVector& wires,
158 SMESH_MesherHelper& helper,
159 std::vector< const SMDS_MeshNode* > & nodeVec);
161 void SetDefaultParameters();
163 static void RemoveTmpFiles();
165 static SMESH_ComputeErrorPtr ReadErrors(const std::vector< const SMDS_MeshNode* >& nodeVec);
168 static void toPython( const netgen::Mesh* ngMesh,
169 const std::string& pyFile); // debug
172 bool _compute( NETGENPlugin_NetgenLibWrapper* ngLib );
175 const TopoDS_Shape& _shape;
179 bool _isViscousLayers2D;
181 const NETGENPlugin_SimpleHypothesis_2D * _simpleHyp;
184 //=============================================================================
186 * \brief Container of info needed to solve problems with internal shapes.
188 * Issue 0020676. It is made up as a class to be ready to extract from NETGEN
189 * and put in SMESH as soon as the same solution is needed somewhere else.
190 * The approach is to precompute internal edges in 2D and internal faces in 3D
191 * and put their mesh correctly (twice) into netgen mesh.
192 * In 2D, this class finds internal edges in faces and their vertices.
193 * In 3D, it additionally finds internal faces, their edges shared with other faces,
194 * and their vertices shared by several internal edges. Nodes built on the found
195 * shapes and mesh faces built on the found internal faces are to be doubled in
196 * netgen mesh to emulate a "crack"
198 * For internal faces a more simple solution is found, which is just to duplicate
199 * mesh faces on internal geom faces without modeling a "real crack". For this
200 * reason findBorderElements() is no more used anywhere.
202 //=============================================================================
204 class NETGENPLUGIN_EXPORT NETGENPlugin_Internals
209 std::map<int,int> _e2face;//!<edges and their vertices in faces where they are TopAbs_INTERNAL
210 std::map<int,std::list<int> > _f2v;//!<faces with internal vertices
212 std::set<int> _intShapes;
213 std::set<int> _borderFaces; //!< non-internal faces sharing the internal edge
214 std::map<int,std::list<int> > _s2v;//!<solids with internal vertices
217 NETGENPlugin_Internals( SMESH_Mesh& mesh, const TopoDS_Shape& shape, bool is3D );
219 SMESH_Mesh& getMesh() const;
221 bool isShapeToPrecompute(const TopoDS_Shape& s);
225 bool hasInternalEdges() const { return !_e2face.empty(); }
226 bool isInternalEdge( int id ) const { return _e2face.count( id ); }
227 const std::map<int,int>& getEdgesAndVerticesWithFaces() const { return _e2face; }
228 void getInternalEdges( TopTools_IndexedMapOfShape& fmap,
229 TopTools_IndexedMapOfShape& emap,
230 TopTools_IndexedMapOfShape& vmap,
231 std::list< SMESH_subMesh* > smToPrecompute[]);
233 bool hasInternalVertexInFace() const { return !_f2v.empty(); }
234 const std::map<int,std::list<int> >& getFacesWithVertices() const { return _f2v; }
238 bool hasInternalFaces() const { return !_intShapes.empty(); }
239 bool isInternalShape( int id ) const { return _intShapes.count( id ); }
240 void findBorderElements( std::set< const SMDS_MeshElement*, TIDCompare > & borderElems );
241 bool isBorderFace( int faceID ) const { return _borderFaces.count( faceID ); }
242 void getInternalFaces( TopTools_IndexedMapOfShape& fmap,
243 TopTools_IndexedMapOfShape& emap,
244 std::list< SMESH_subMesh* >& facesSM,
245 std::list< SMESH_subMesh* >& boundarySM);
247 bool hasInternalVertexInSolid() const { return !_s2v.empty(); }
248 bool hasInternalVertexInSolid(int soID ) const { return _s2v.count(soID); }
249 const std::map<int,std::list<int> >& getSolidsWithVertices() const { return _s2v; }