1 // Copyright (C) 2007-2011 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
22 // File : DriverCGNS_Write.cxx
23 // Created : Fri Aug 5 17:43:54 2011
24 // Author : Edward AGAPOV (eap)
26 #include "DriverCGNS_Write.hxx"
28 #include "SMDS_MeshNode.hxx"
29 #include "SMDS_VolumeTool.hxx"
30 #include "SMESHDS_GroupBase.hxx"
31 #include "SMESHDS_Mesh.hxx"
32 #include "SMESH_Comment.hxx"
37 #if CGNS_VERSION < 3100
45 //================================================================================
47 * \brief Return interlace and type of CGNS element for the given SMDSAbs_EntityType
49 //================================================================================
51 const int* getInterlaceAndType( const SMDSAbs_EntityType smType,
52 CGNS_ENUMT( ElementType_t ) & cgType )
54 static vector< const int* > interlaces;
55 static vector< CGNS_ENUMT( ElementType_t )> cgTypes;
56 if ( interlaces.empty() )
58 interlaces.resize( SMDSEntity_Last, 0 );
59 cgTypes.resize( SMDSEntity_Last, CGNS_ENUMV( ElementTypeNull ));
61 static int ids[] = {0};
62 interlaces[SMDSEntity_0D] = ids;
63 cgTypes [SMDSEntity_0D] = CGNS_ENUMV( NODE );
66 static int ids[] = { 0, 1 };
67 interlaces[SMDSEntity_Edge] = ids;
68 cgTypes [SMDSEntity_Edge] = CGNS_ENUMV( BAR_2 );
71 static int ids[] = { 0, 1, 2 };
72 interlaces[SMDSEntity_Quad_Edge] = ids;
73 cgTypes [SMDSEntity_Quad_Edge] = CGNS_ENUMV( BAR_3 );
76 static int ids[] = { 0, 2, 1 };
77 interlaces[SMDSEntity_Triangle] = ids;
78 cgTypes [SMDSEntity_Triangle] = CGNS_ENUMV( TRI_3 );
81 static int ids[] = { 0, 2, 1, 5, 4, 3 };
82 interlaces[SMDSEntity_Quad_Triangle] = ids;
83 cgTypes [SMDSEntity_Quad_Triangle] = CGNS_ENUMV( TRI_6 );
86 static int ids[] = { 0, 3, 2, 1 };
87 interlaces[SMDSEntity_Quadrangle] = ids;
88 cgTypes [SMDSEntity_Quadrangle] = CGNS_ENUMV( QUAD_4 );
91 static int ids[] = { 0,3,2,1,7,6,5,4 };
92 interlaces[SMDSEntity_Quad_Quadrangle] = ids;
93 cgTypes [SMDSEntity_Quad_Quadrangle] = CGNS_ENUMV( QUAD_8 );
96 static int ids[] = { 0, 2, 1, 3 };
97 interlaces[SMDSEntity_Tetra] = ids;
98 cgTypes [SMDSEntity_Tetra] = CGNS_ENUMV( TETRA_4 );
101 static int ids[] = { 0,2,1,3,6,5,4,7,9,8 };
102 interlaces[SMDSEntity_Quad_Tetra] = ids;
103 cgTypes [SMDSEntity_Quad_Tetra] = CGNS_ENUMV( TETRA_10 );
106 static int ids[] = { 0,3,2,1,4 };
107 interlaces[SMDSEntity_Pyramid] = ids;
108 cgTypes [SMDSEntity_Pyramid] = CGNS_ENUMV( PYRA_5 );
111 static int ids[] = { 0,3,2,1,4,8,7,6,5,9,12,11,10 };
112 interlaces[SMDSEntity_Quad_Pyramid] = ids;
113 cgTypes [SMDSEntity_Quad_Pyramid] = CGNS_ENUMV( PYRA_13 );
116 static int ids[] = { 0,2,1,3,5,4 };
117 interlaces[SMDSEntity_Penta] = ids;
118 cgTypes [SMDSEntity_Penta] = CGNS_ENUMV( PENTA_6 );
121 static int ids[] = { 0,2,1,3,5,4,8,7,6,9,11,10,14,13,12 };
122 interlaces[SMDSEntity_Quad_Penta] = ids;
123 cgTypes [SMDSEntity_Quad_Penta] = CGNS_ENUMV( PENTA_15 );
126 static int ids[] = { 0,3,2,1,4,7,6,5 };
127 interlaces[SMDSEntity_Hexa] = ids;
128 cgTypes [SMDSEntity_Hexa] = CGNS_ENUMV( HEXA_8 );
131 static int ids[] = { 0,3,2,1,4,7,6,5,11,10,9,8,12,15,14,13,19,18,17,16 };
132 interlaces[SMDSEntity_Quad_Hexa] = ids;
133 cgTypes [SMDSEntity_Quad_Hexa] = CGNS_ENUMV( HEXA_20 );
136 cgTypes[SMDSEntity_Polygon] = CGNS_ENUMV( NGON_n );
137 cgTypes[SMDSEntity_Polyhedra] = CGNS_ENUMV( NFACE_n );
140 cgType = cgTypes[ smType ];
141 return interlaces[ smType ];
144 //================================================================================
146 * \brief Cut off type of boundary condition from the group name
148 //================================================================================
150 CGNS_ENUMT( BCType_t ) getBCType( string& groupName )
152 CGNS_ENUMT( BCType_t ) bcType = CGNS_ENUMV( BCGeneral ); // default type
154 // boundary condition type starts from "BC"
155 size_t bcBeg = groupName.find("BC");
156 if ( bcBeg != string::npos )
158 for ( int t = 0; t < NofValidBCTypes; ++t )
160 CGNS_ENUMT( BCType_t ) type = CGNS_ENUMT( BCType_t)( t );
161 string typeName = cg_BCTypeName( type );
162 if ( typeName == &groupName[0] + bcBeg )
165 while ( bcBeg > 0 && isspace( bcBeg-1 ))
170 groupName = groupName.substr( 0, bcBeg-1 );
177 //================================================================================
179 * \brief Sortable face of a polyhedron
183 int _id; // id of NGON_n
184 vector< int > _nodes; // lowest node IDs used for sorting
186 TPolyhedFace( const SMDS_MeshNode** nodes, const int nbNodes, int ID):_id(ID)
189 for ( int i = 0; i < nbNodes; ++i )
190 ids.insert( nodes[i]->GetID() );
192 _nodes.resize( 3 ); // std::min( nbNodes, 4 )); hope 3 nodes is enough
193 set< int >::iterator idIt = ids.begin();
194 for ( size_t j = 0; j < _nodes.size(); ++j, ++idIt )
197 bool operator< (const TPolyhedFace& o ) const
199 return _nodes < o._nodes;
202 //================================================================================
204 * \brief Return CGNS id of an element
206 //================================================================================
208 cgsize_t cgnsID( const SMDS_MeshElement* elem,
209 const map< const SMDS_MeshElement*, cgsize_t >& elem2cgID )
211 map< const SMDS_MeshElement*, cgsize_t >::const_iterator e2id = elem2cgID.find( elem );
212 return ( e2id == elem2cgID.end() ? elem->GetID() : e2id->second );
217 //================================================================================
219 * \brief Write the mesh into the CGNS file
221 //================================================================================
223 Driver_Mesh::Status DriverCGNS_Write::Perform()
225 myErrorMessages.clear();
227 if ( !myMesh || myMesh->GetMeshInfo().NbElements() < 1 )
228 return addMessage( !myMesh ? "NULL mesh" : "Empty mesh (no elements)", /*fatal = */true );
231 if ( cg_open(myFile.c_str(), CG_MODE_MODIFY, &_fn) != CG_OK &&
232 cg_open(myFile.c_str(), CG_MODE_WRITE, &_fn) != CG_OK )
233 return addMessage( cg_get_error(), /*fatal = */true );
238 const int spaceDim = 3;
240 if ( myMesh->NbFaces() > 0 ) meshDim = 2;
241 if ( myMesh->NbVolumes() > 0 ) meshDim = 3;
243 if ( myMeshName.empty() )
246 if ( cg_nbases( _fn, &nbases) == CG_OK)
247 myMeshName = ( SMESH_Comment("Base_") << nbases+1 );
249 myMeshName = "Base_0";
252 if ( cg_base_write( _fn, myMeshName.c_str(), meshDim, spaceDim, &iBase))
253 return addMessage( cg_get_error(), /*fatal = */true );
258 int nbCells = myMesh->NbEdges();
260 nbCells = myMesh->NbVolumes();
261 else if ( meshDim == 2 )
262 nbCells = myMesh->NbFaces();
264 cgsize_t size[9] = { myMesh->NbNodes(), nbCells, /*NBoundVertex=*/0, 0,0,0,0,0,0 };
266 if ( cg_zone_write( _fn, iBase, "SMESH_Mesh", size,
267 CGNS_ENUMV( Unstructured ), &iZone) != CG_OK )
268 return addMessage( cg_get_error(), /*fatal = */true );
270 // Map to store only elements whose an SMDS ID differs from a CGNS one
271 typedef map< const SMDS_MeshElement*, cgsize_t > TElem2cgIDMap;
272 vector< TElem2cgIDMap > elem2cgIDByEntity( SMDSEntity_Last );
273 TElem2cgIDMap::iterator elem2cgIDIter;
275 TElem2cgIDMap & n2cgID = elem2cgIDByEntity[ SMDSEntity_Node ];
280 vector< double > coords( myMesh->NbNodes() );
283 SMDS_NodeIteratorPtr nIt = myMesh->nodesIterator( /*idInceasingOrder=*/true );
284 for ( int i = 0; nIt->more(); ++i ) coords[i] = nIt->next()->X();
285 if ( cg_coord_write( _fn, iBase, iZone, CGNS_ENUMV(RealDouble),
286 "CoordinateX", &coords[0], &iC) != CG_OK )
287 return addMessage( cg_get_error(), /*fatal = */true );
289 nIt = myMesh->nodesIterator( /*idInceasingOrder=*/true );
290 for ( int i = 0; nIt->more(); ++i ) coords[i] = nIt->next()->Y();
291 if ( cg_coord_write( _fn, iBase, iZone, CGNS_ENUMV(RealDouble),
292 "CoordinateY", &coords[0], &iC) != CG_OK )
293 return addMessage( cg_get_error(), /*fatal = */true );
295 nIt = myMesh->nodesIterator( /*idInceasingOrder=*/true );
296 for ( int i = 0; nIt->more(); ++i ) coords[i] = nIt->next()->Z();
297 if ( cg_coord_write( _fn, iBase, iZone, CGNS_ENUMV(RealDouble),
298 "CoordinateZ", &coords[0], &iC) != CG_OK )
299 return addMessage( cg_get_error(), /*fatal = */true );
301 // store CGNS ids of nodes
302 nIt = myMesh->nodesIterator( /*idInceasingOrder=*/true );
303 for ( int i = 0; nIt->more(); ++i )
305 const SMDS_MeshElement* n = nIt->next();
306 if ( n->GetID() != i+1 )
307 n2cgID.insert( n2cgID.end(), make_pair( n, i+1 ));
313 cgsize_t cgID = 1, startID;
315 // write into a section all successive elements of one geom type
317 vector< cgsize_t > elemData;
318 SMDS_ElemIteratorPtr elemIt = myMesh->elementsIterator();
319 const SMDS_MeshElement* elem = elemIt->next();
322 const SMDSAbs_EntityType elemType = elem->GetEntityType();
323 CGNS_ENUMT( ElementType_t ) cgType;
324 const int* interlace = getInterlaceAndType( elemType, cgType );
326 TElem2cgIDMap & elem2cgID = elem2cgIDByEntity[ elemType ];
331 if ( interlace ) // STANDARD elements
334 for ( int i = 0, nb = elem->NbNodes(); i < nb; ++i )
335 elemData.push_back( cgnsID( elem->GetNode( interlace[i] ), n2cgID ));
336 if ( elem->GetID() != cgID )
337 elem2cgID.insert( elem2cgID.end(), make_pair( elem, cgID ));
339 elem = elemIt->more() ? elemIt->next() : 0;
341 while ( elem && elem->GetEntityType() == elemType );
343 else if ( elemType == SMDSEntity_Polygon ) // POLYGONS
346 elemData.push_back( elem->NbNodes() );
347 for ( int i = 0, nb = elem->NbNodes(); i < nb; ++i )
348 elemData.push_back( cgnsID( elem->GetNode(i), n2cgID ));
349 if ( elem->GetID() != cgID )
350 elem2cgID.insert( elem2cgID.end(), make_pair( elem, cgID ));
352 elem = elemIt->more() ? elemIt->next() : 0;
354 while ( elem && elem->GetEntityType() == elemType );
356 else if ( elemType == SMDSEntity_Polyhedra ) // POLYHEDRA
358 // to save polyhedrons after all
359 const SMDS_MeshInfo& meshInfo = myMesh->GetMeshInfo();
360 if ( meshInfo.NbPolyhedrons() == meshInfo.NbElements() - cgID + 1 )
361 break; // only polyhedrons remain
362 while ( elem && elem->GetEntityType() == elemType )
363 elem = elemIt->more() ? elemIt->next() : 0;
367 SMESH_Comment sectionName( cg_ElementTypeName( cgType ));
368 sectionName << " " << startID << " - " << cgID-1;
370 if ( cg_section_write(_fn, iBase, iZone, sectionName.c_str(), cgType, startID,
371 cgID-1, /*nbndry=*/0, &elemData[0], &iSec) != CG_OK )
372 return addMessage( cg_get_error(), /*fatal = */true );
374 // Write polyhedral volumes
375 // -------------------------
377 if ( myMesh->GetMeshInfo().NbPolyhedrons() > 0 )
379 // the polyhedron (NFACE_n) is described as a set of signed face IDs,
380 // so first we are to write all polygones (NGON_n) bounding polyhedrons
382 vector< cgsize_t > faceData;
383 set< TPolyhedFace > faces;
384 set< TPolyhedFace >::iterator faceInSet;
385 vector<const SMDS_MeshNode *> faceNodesVec;
386 int nbPolygones = 0, faceID;
392 int nbPolyhTreated = 0;
394 TElem2cgIDMap * elem2cgID = 0;
395 TElem2cgIDMap & n2cgID = elem2cgIDByEntity[ SMDSEntity_Node ];
397 SMDS_ElemIteratorPtr elemIt = myMesh->elementsIterator();
398 while ( elemIt->more() )
400 elem = elemIt->next();
401 if ( elem->GetEntityType() == SMDSEntity_Polyhedra )
405 vol.SetExternalNormal();
406 const int nbFaces = vol.NbFaces();
407 elemData.push_back( nbFaces );
408 for ( int iF = 0; iF < nbFaces; ++iF )
410 const int nbNodes = vol.NbFaceNodes( iF );
411 const SMDS_MeshNode** faceNodes = vol.GetFaceNodes( iF );
412 faceNodesVec.assign( faceNodes, faceNodes + nbNodes );
413 if (( elem = myMesh->FindElement( faceNodesVec, SMDSAbs_Face, /*noMedium=*/false)))
415 // a face of the polyhedron is present in the mesh
416 faceID = cgnsID( elem, elem2cgIDByEntity[ elem->GetEntityType() ]);
418 else if ( vol.IsFreeFace( iF ))
420 // the face is not shared by volumes
423 faceData.push_back( nbNodes );
424 for ( int i = 0; i < nbNodes; ++i )
425 faceData.push_back( cgnsID( faceNodes[i], n2cgID ));
429 TPolyhedFace face( faceNodes, nbNodes, cgID );
430 faceInSet = faces.insert( faces.end(), face );
431 if ( faceInSet->_id == cgID ) // the face encounters for the 1st time
435 faceData.push_back( nbNodes );
436 for ( int i = 0; i < nbNodes; ++i )
437 faceData.push_back( cgnsID( faceNodes[i], n2cgID ));
441 // the face encounters for the 2nd time; we hope it won't encounter once more,
442 // for that we can erase it from the set of faces
443 faceID = -faceInSet->_id;
444 faces.erase( faceInSet );
447 elemData.push_back( faceID );
452 if ( nbPolygones > 0 )
454 if ( cg_section_write(_fn, iBase, iZone, "Faces of Polyhedrons",
455 CGNS_ENUMV( NGON_n ), cgID - nbPolygones, cgID-1,
456 /*nbndry=*/0, &faceData[0], &iSec) != CG_OK )
457 return addMessage( cg_get_error(), /*fatal = */true );
460 if ( cg_section_write(_fn, iBase, iZone, "Polyhedrons",
461 CGNS_ENUMV( NFACE_n ), cgID, cgID+nbPolyhTreated-1,
462 /*nbndry=*/0, &elemData[0], &iSec) != CG_OK )
463 return addMessage( cg_get_error(), /*fatal = */true );
465 if ( !myMesh->GetGroups().empty() )
467 // store CGNS ids of polyhedrons
468 elem2cgID = &elem2cgIDByEntity[ SMDSEntity_Polyhedra ];
469 elemIt = myMesh->elementsIterator();
470 while ( elemIt->more() )
472 elem = elemIt->next();
473 if ( elem->GetEntityType() == SMDSEntity_Polyhedra )
475 if ( elem->GetID() != cgID )
476 elem2cgID->insert( elem2cgID->end(), make_pair( elem, cgID ));
481 } // write polyhedral volumes
484 // Write groups as boundary conditions
485 // ------------------------------------
487 const set<SMESHDS_GroupBase*>& groups = myMesh->GetGroups();
488 set<SMESHDS_GroupBase*>::const_iterator grpIt = groups.begin();
489 set< string > groupNames; groupNames.insert(""); // to avoid duplicated and empty names
490 for ( ; grpIt != groups.end(); ++grpIt )
492 const SMESHDS_GroupBase* group = *grpIt;
494 // write BC location (default is Vertex)
495 CGNS_ENUMT( GridLocation_t ) location = CGNS_ENUMV( Vertex );
496 if ( group->GetType() != SMDSAbs_Node )
500 switch ( group->GetType() ) {
501 case SMDSAbs_Volume: location = CGNS_ENUMV( FaceCenter ); break; // !!!
502 case SMDSAbs_Face: location = CGNS_ENUMV( FaceCenter ); break; // OK
503 case SMDSAbs_Edge: location = CGNS_ENUMV( EdgeCenter ); break; // OK
508 switch ( group->GetType() ) {
509 case SMDSAbs_Face: location = CGNS_ENUMV( FaceCenter ); break; // ???
510 case SMDSAbs_Edge: location = CGNS_ENUMV( EdgeCenter ); break; // OK
515 location = CGNS_ENUMV( EdgeCenter ); break; // ???
520 // try to extract type of boundary condition from the group name
521 string name = group->GetStoreName();
522 CGNS_ENUMT( BCType_t ) bcType = getBCType( name );
523 while ( !groupNames.insert( name ).second )
524 name = (SMESH_Comment( "Group_") << groupNames.size());
526 // write IDs of elements
527 vector< cgsize_t > pnts;
528 pnts.reserve( group->Extent() );
529 SMDS_ElemIteratorPtr elemIt = group->GetElements();
530 while ( elemIt->more() )
532 const SMDS_MeshElement* elem = elemIt->next();
533 pnts.push_back( cgnsID( elem, elem2cgIDByEntity[ elem->GetEntityType() ]));
536 if ( cg_boco_write( _fn, iBase, iZone, name.c_str(), bcType,
537 CGNS_ENUMV( PointList ), pnts.size(), &pnts[0], &iBC) != CG_OK )
538 return addMessage( cg_get_error(), /*fatal = */true);
541 if ( location != CGNS_ENUMV( Vertex ))
543 if ( cg_boco_gridlocation_write( _fn, iBase, iZone, iBC, location) != CG_OK )
544 return addMessage( cg_get_error(), /*fatal = */false);
550 //================================================================================
554 //================================================================================
556 DriverCGNS_Write::DriverCGNS_Write(): _fn(0)
560 //================================================================================
562 * \brief Close the cgns file at destruction
564 //================================================================================
566 DriverCGNS_Write::~DriverCGNS_Write()