-// NETGENPlugin : C++ implementation
+// Copyright (C) 2007-2019 CEA/DEN, EDF R&D, OPEN CASCADE
+//
+// Copyright (C) 2003-2007 OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
+// CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
//
-// Copyright (C) 2006 OPEN CASCADE, CEA/DEN, EDF R&D
-//
-// This library is free software; you can redistribute it and/or
-// modify it under the terms of the GNU Lesser General Public
-// License as published by the Free Software Foundation; either
-// version 2.1 of the License.
-//
-// This library is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-// Lesser General Public License for more details.
-//
-// You should have received a copy of the GNU Lesser General Public
-// License along with this library; if not, write to the Free Software
-// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-//
-// See http://www.opencascade.org/SALOME/ or email : webmaster.salome@opencascade.org
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
//
+// You should have received a copy of the GNU Lesser General Public
+// License along with this library; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
//
+// See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
+//
+
+// NETGENPlugin : C++ implementation
// File : NETGENPlugin_Mesher.hxx
// Author : Michael Sazonov (OCN)
// Date : 31/03/2006
// Project : SALOME
-// $Header$
-//=============================================================================
-
+//
#ifndef _NETGENPlugin_Mesher_HXX_
#define _NETGENPlugin_Mesher_HXX_
+#include "NETGENPlugin_Defs.hxx"
+
+#include <StdMeshers_FaceSide.hxx>
+#include <SMDS_MeshElement.hxx>
+#include <SMESH_Algo.hxx>
+#include <SMESH_ProxyMesh.hxx>
+
+#include <TopTools_IndexedMapOfShape.hxx>
+
+namespace nglib {
+#include <nglib.h>
+}
+
+#include <map>
+#include <vector>
+#include <set>
+
+class NETGENPlugin_Hypothesis;
+class NETGENPlugin_Internals;
+class NETGENPlugin_SimpleHypothesis_2D;
class SMESHDS_Mesh;
+class SMESH_Comment;
+class SMESH_Mesh;
+class SMESH_MesherHelper;
+class StdMeshers_ViscousLayers;
class TopoDS_Shape;
-class NETGENPlugin_Hypothesis;
+namespace netgen {
+ class OCCGeometry;
+ class Mesh;
+}
+//=============================================================================
+/*!
+ * \brief Struct storing nb of entities in netgen mesh
+ */
+//=============================================================================
+
+struct NETGENPlugin_ngMeshInfo
+{
+ int _nbNodes, _nbSegments, _nbFaces, _nbVolumes;
+ bool _elementsRemoved; // case where netgen can remove free nodes
+ char* _copyOfLocalH;
+ NETGENPlugin_ngMeshInfo( netgen::Mesh* ngMesh=0, bool checkRemovedElems=false );
+ void transferLocalH( netgen::Mesh* fromMesh, netgen::Mesh* toMesh );
+ void restoreLocalH ( netgen::Mesh* ngMesh);
+};
+
+//================================================================================
+/*!
+ * \brief It correctly initializes netgen library at constructor and
+ * correctly finishes using netgen library at destructor
+ */
+//================================================================================
+
+struct NETGENPLUGIN_EXPORT NETGENPlugin_NetgenLibWrapper
+{
+ bool _isComputeOk;
+ nglib::Ng_Mesh * _ngMesh;
+
+ NETGENPlugin_NetgenLibWrapper();
+ ~NETGENPlugin_NetgenLibWrapper();
+ void setMesh( nglib::Ng_Mesh* mesh );
+
+ static void RemoveTmpFiles();
+ static int& instanceCounter();
+
+ private:
+ std::string getOutputFileName();
+ void removeOutputFile();
+ std::string _outputFileName;
+ ostream * _ngcout;
+ ostream * _ngcerr;
+ std::streambuf* _coutBuffer; // to re-/store cout.rdbuf()
+};
+
+//=============================================================================
/*!
* \brief This class calls the NETGEN mesher of OCC geometry
*/
+//=============================================================================
-class NETGENPlugin_Mesher
+class NETGENPLUGIN_EXPORT NETGENPlugin_Mesher
{
public:
// ---------- PUBLIC METHODS ----------
- NETGENPlugin_Mesher (SMESHDS_Mesh* meshDS, const TopoDS_Shape& aShape,
+ NETGENPlugin_Mesher (SMESH_Mesh* mesh, const TopoDS_Shape& aShape,
const bool isVolume);
+ ~NETGENPlugin_Mesher();
+ void SetSelfPointer( NETGENPlugin_Mesher ** ptr );
- void SetParameters(const NETGENPlugin_Hypothesis* hyp);
+ void SetParameters(const NETGENPlugin_Hypothesis* hyp);
+ void SetParameters(const NETGENPlugin_SimpleHypothesis_2D* hyp);
+ void SetParameters(const StdMeshers_ViscousLayers* hyp );
+ void SetViscousLayers2DAssigned(bool isAssigned) { _isViscousLayers2D = isAssigned; }
+
+ void SetLocalSizeForChordalError( netgen::OCCGeometry& occgeo, netgen::Mesh& ngMesh );
+ static void SetLocalSize( netgen::OCCGeometry& occgeo, netgen::Mesh& ngMesh );
bool Compute();
+ bool Evaluate(MapShapeNbElems& aResMap);
+
+ double GetProgress(const SMESH_Algo* holder,
+ const int * algoProgressTic,
+ const double * algoProgress) const;
+
+ static void PrepareOCCgeometry(netgen::OCCGeometry& occgeom,
+ const TopoDS_Shape& shape,
+ SMESH_Mesh& mesh,
+ std::list< SMESH_subMesh* > * meshedSM=0,
+ NETGENPlugin_Internals* internalShapes=0);
+
+ static double GetDefaultMinSize(const TopoDS_Shape& shape,
+ const double maxSize);
+
+ static void RestrictLocalSize(netgen::Mesh& ngMesh,
+ const gp_XYZ& p,
+ double size,
+ const bool overrideMinH=true);
+
+ static int FillSMesh(const netgen::OCCGeometry& occgeom,
+ netgen::Mesh& ngMesh,
+ const NETGENPlugin_ngMeshInfo& initState,
+ SMESH_Mesh& sMesh,
+ std::vector<const SMDS_MeshNode*>& nodeVec,
+ SMESH_Comment& comment,
+ SMESH_MesherHelper* quadHelper=0);
+
+ bool FillNgMesh(netgen::OCCGeometry& occgeom,
+ netgen::Mesh& ngMesh,
+ std::vector<const SMDS_MeshNode*>& nodeVec,
+ const std::list< SMESH_subMesh* > & meshedSM,
+ SMESH_MesherHelper* quadHelper=0,
+ SMESH_ProxyMesh::Ptr proxyMesh=SMESH_ProxyMesh::Ptr());
+
+ static void FixIntFaces(const netgen::OCCGeometry& occgeom,
+ netgen::Mesh& ngMesh,
+ NETGENPlugin_Internals& internalShapes);
+
+ static bool FixFaceMesh(const netgen::OCCGeometry& occgeom,
+ netgen::Mesh& ngMesh,
+ const int faceID);
+
+ static void AddIntVerticesInFaces(const netgen::OCCGeometry& occgeom,
+ netgen::Mesh& ngMesh,
+ std::vector<const SMDS_MeshNode*>& nodeVec,
+ NETGENPlugin_Internals& internalShapes);
+
+ static void AddIntVerticesInSolids(const netgen::OCCGeometry& occgeom,
+ netgen::Mesh& ngMesh,
+ std::vector<const SMDS_MeshNode*>& nodeVec,
+ NETGENPlugin_Internals& internalShapes);
+
+ static SMESH_ComputeErrorPtr
+ AddSegmentsToMesh(netgen::Mesh& ngMesh,
+ netgen::OCCGeometry& geom,
+ const TSideVector& wires,
+ SMESH_MesherHelper& helper,
+ std::vector< const SMDS_MeshNode* > & nodeVec,
+ const bool overrideMinH=true);
+
+ void SetDefaultParameters();
+
+ static SMESH_ComputeErrorPtr ReadErrors(const std::vector< const SMDS_MeshNode* >& nodeVec);
+
+
+ static void toPython( const netgen::Mesh* ngMesh ); // debug
+
private:
- SMESHDS_Mesh* _meshDS;
+
+ SMESH_Mesh* _mesh;
const TopoDS_Shape& _shape;
bool _isVolume;
bool _optimize;
+ int _fineness;
+ bool _isViscousLayers2D;
+ double _chordalError;
+ netgen::Mesh* _ngMesh;
+ netgen::OCCGeometry* _occgeom;
+
+ int _curShapeIndex;
+ volatile int _progressTic;
+ volatile double _ticTime; // normalized [0,1] compute time per a SMESH_Algo::_progressTic
+ volatile double _totalTime;
+
+ const NETGENPlugin_SimpleHypothesis_2D * _simpleHyp;
+ const StdMeshers_ViscousLayers* _viscousLayersHyp;
+
+ // a pointer to NETGENPlugin_Mesher* field of the holder, that will be
+ // nullified at destruction of this
+ NETGENPlugin_Mesher ** _ptrToMe;
+};
+
+//=============================================================================
+/*!
+ * \brief Container of info needed to solve problems with internal shapes.
+ *
+ * Issue 0020676. It is made up as a class to be ready to extract from NETGEN
+ * and put in SMESH as soon as the same solution is needed somewhere else.
+ * The approach is to precompute internal edges in 2D and internal faces in 3D
+ * and put their mesh correctly (twice) into netgen mesh.
+ * In 2D, this class finds internal edges in faces and their vertices.
+ * In 3D, it additionally finds internal faces, their edges shared with other faces,
+ * and their vertices shared by several internal edges. Nodes built on the found
+ * shapes and mesh faces built on the found internal faces are to be doubled in
+ * netgen mesh to emulate a "crack"
+ *
+ * For internal faces a more simple solution is found, which is just to duplicate
+ * mesh faces on internal geom faces without modeling a "real crack". For this
+ * reason findBorderElements() is no more used anywhere.
+ */
+//=============================================================================
+
+class NETGENPLUGIN_EXPORT NETGENPlugin_Internals
+{
+ SMESH_Mesh& _mesh;
+ bool _is3D;
+ //2D
+ std::map<int,int> _e2face;//!<edges and their vertices in faces where they are TopAbs_INTERNAL
+ std::map<int,std::list<int> > _f2v;//!<faces with internal vertices
+ // 3D
+ std::set<int> _intShapes;
+ std::set<int> _borderFaces; //!< non-internal faces sharing the internal edge
+ std::map<int,std::list<int> > _s2v;//!<solids with internal vertices
+
+public:
+ NETGENPlugin_Internals( SMESH_Mesh& mesh, const TopoDS_Shape& shape, bool is3D );
+
+ SMESH_Mesh& getMesh() const;
+
+ bool isShapeToPrecompute(const TopoDS_Shape& s);
+
+ // 2D meshing
+ // edges
+ bool hasInternalEdges() const { return !_e2face.empty(); }
+ bool isInternalEdge( int id ) const { return _e2face.count( id ); }
+ const std::map<int,int>& getEdgesAndVerticesWithFaces() const { return _e2face; }
+ void getInternalEdges( TopTools_IndexedMapOfShape& fmap,
+ TopTools_IndexedMapOfShape& emap,
+ TopTools_IndexedMapOfShape& vmap,
+ std::list< SMESH_subMesh* > smToPrecompute[]);
+ // vertices
+ bool hasInternalVertexInFace() const { return !_f2v.empty(); }
+ const std::map<int,std::list<int> >& getFacesWithVertices() const { return _f2v; }
+
+ // 3D meshing
+ // faces
+ bool hasInternalFaces() const { return !_intShapes.empty(); }
+ bool isInternalShape( int id ) const { return _intShapes.count( id ); }
+ void findBorderElements( std::set< const SMDS_MeshElement*, TIDCompare > & borderElems );
+ bool isBorderFace( int faceID ) const { return _borderFaces.count( faceID ); }
+ void getInternalFaces( TopTools_IndexedMapOfShape& fmap,
+ TopTools_IndexedMapOfShape& emap,
+ std::list< SMESH_subMesh* >& facesSM,
+ std::list< SMESH_subMesh* >& boundarySM);
+ // vertices
+ bool hasInternalVertexInSolid() const { return !_s2v.empty(); }
+ bool hasInternalVertexInSolid(int soID ) const { return _s2v.count(soID); }
+ const std::map<int,std::list<int> >& getSolidsWithVertices() const { return _s2v; }
+
+
};
#endif
