1 // Copyright (C) 2007-2008 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 // SMESH SMESH : implementaion of SMESH idl descriptions
23 // File : StdMeshers_FaceSide.hxx
24 // Created : Wed Jan 31 18:41:25 2007
25 // Author : Edward AGAPOV (eap)
28 #include "StdMeshers_FaceSide.hxx"
30 #include "SMDS_EdgePosition.hxx"
31 #include "SMDS_MeshNode.hxx"
32 #include "SMESHDS_Mesh.hxx"
33 #include "SMESHDS_SubMesh.hxx"
34 //#include "SMESH_Algo.hxx"
35 #include "SMESH_Mesh.hxx"
36 #include "SMESH_MesherHelper.hxx"
37 #include "SMESH_ComputeError.hxx"
38 #include "SMESH_Block.hxx"
40 #include <Adaptor2d_Curve2d.hxx>
41 #include <BRepAdaptor_CompCurve.hxx>
42 #include <BRepAdaptor_Curve.hxx>
43 #include <BRep_Builder.hxx>
44 #include <BRep_Tool.hxx>
46 #include <TopExp_Explorer.hxx>
47 #include <TopoDS_Face.hxx>
48 #include <TopoDS_Vertex.hxx>
49 #include <TopoDS_Wire.hxx>
53 #include "utilities.h"
55 //================================================================================
57 * \brief Constructor of a side of one edge
58 * \param theFace - the face
59 * \param theEdge - the edge
61 //================================================================================
63 StdMeshers_FaceSide::StdMeshers_FaceSide(const TopoDS_Face& theFace,
64 const TopoDS_Edge& theEdge,
66 const bool theIsForward,
67 const bool theIgnoreMediumNodes)
69 list<TopoDS_Edge> edges(1,theEdge);
70 *this = StdMeshers_FaceSide( theFace, edges, theMesh, theIsForward, theIgnoreMediumNodes );
73 //================================================================================
75 * \brief Constructor of a side of several edges
76 * \param theFace - the face
77 * \param theEdge - the edge
79 //================================================================================
81 StdMeshers_FaceSide::StdMeshers_FaceSide(const TopoDS_Face& theFace,
82 list<TopoDS_Edge>& theEdges,
84 const bool theIsForward,
85 const bool theIgnoreMediumNodes)
87 int nbEdges = theEdges.size();
88 myEdge.resize( nbEdges );
89 myC2d.resize( nbEdges );
90 myFirst.resize( nbEdges );
91 myLast.resize( nbEdges );
92 myNormPar.resize( nbEdges );
94 myNbPonits = myNbSegments = 0;
96 myMissingVertexNodes = false;
97 myIgnoreMediumNodes = theIgnoreMediumNodes;
98 myDefaultPnt2d = gp_Pnt2d( 1e+100, 1e+100 );
99 if ( nbEdges == 0 ) return;
101 SMESHDS_Mesh* meshDS = theMesh->GetMeshDS();
102 vector<double> len( nbEdges );
105 list<TopoDS_Edge>::iterator edge = theEdges.begin();
106 for ( int index = 0; edge != theEdges.end(); ++index, ++edge )
108 int i = theIsForward ? index : nbEdges - index - 1;
109 len[i] = SMESH_Algo::EdgeLength( *edge );
110 if ( len[i] < DBL_MIN ) nbDegen++;
113 if ( !theIsForward ) myEdge[i].Reverse();
115 if ( theFace.IsNull() )
116 BRep_Tool::Range( *edge, myFirst[i], myLast[i] );
118 myC2d[i] = BRep_Tool::CurveOnSurface( *edge, theFace, myFirst[i], myLast[i] );
119 if ( myEdge[i].Orientation() == TopAbs_REVERSED )
120 std::swap( myFirst[i], myLast[i] );
122 if ( SMESHDS_SubMesh* sm = meshDS->MeshElements( *edge )) {
123 int nbN = sm->NbNodes();
124 if ( theIgnoreMediumNodes ) {
125 SMDS_ElemIteratorPtr elemIt = sm->GetElements();
126 if ( elemIt->more() && elemIt->next()->IsQuadratic() )
127 nbN -= sm->NbElements();
130 myNbSegments += sm->NbElements();
132 if ( SMESH_Algo::VertexNode( TopExp::FirstVertex( *edge, 1), meshDS ))
133 myNbPonits += 1; // for the first end
135 myMissingVertexNodes = true;
137 if ( SMESH_Algo::VertexNode( TopExp::LastVertex( theEdges.back(), 1), meshDS ))
138 myNbPonits++; // for the last end
140 myMissingVertexNodes = true;
142 if ( nbEdges > 1 && myLength > DBL_MIN ) {
143 const double degenNormLen = 1.e-5;
144 double totLength = myLength;
146 totLength += myLength * degenNormLen * nbDegen;
147 double prevNormPar = 0;
148 for ( int i = 0; i < nbEdges; ++i ) {
149 if ( len[ i ] < DBL_MIN )
150 len[ i ] = myLength * degenNormLen;
151 myNormPar[ i ] = prevNormPar + len[i]/totLength;
152 prevNormPar = myNormPar[ i ];
155 myNormPar[nbEdges-1] = 1.;
159 //================================================================================
161 * \brief Constructor of a side for vertex using data from other FaceSide
162 * \param theVertex - the vertex
163 * \param theSide - the side
165 //================================================================================
167 StdMeshers_FaceSide::StdMeshers_FaceSide(const SMDS_MeshNode* theNode,
168 const gp_Pnt2d thePnt2d,
169 const StdMeshers_FaceSide* theSide)
173 myMesh = theSide->GetMesh();
174 myDefaultPnt2d = thePnt2d;
176 myPoints = theSide->GetUVPtStruct();
177 myNbPonits = myNbSegments = myPoints.size();
178 std::vector<uvPtStruct>::iterator it = myPoints.begin();
179 for(; it!=myPoints.end(); it++) {
180 (*it).u = thePnt2d.X();
181 (*it).v = thePnt2d.Y();
183 (*it).node = theNode;
187 //================================================================================
189 * \brief Return info on nodes on the side
190 * \retval UVPtStruct* - array of data structures
192 //================================================================================
194 const vector<UVPtStruct>& StdMeshers_FaceSide::GetUVPtStruct(bool isXConst,
195 double constValue) const
197 if ( myPoints.empty() ) {
199 if ( NbEdges() == 0 ) return myPoints;
201 SMESHDS_Mesh* meshDS = myMesh->GetMeshDS();
203 // sort nodes of all edges putting them into a map
205 map< double, const SMDS_MeshNode*> u2node;
207 for ( int i = 0; i < myEdge.size(); ++i ) {
208 // put 1st vertex node
209 TopoDS_Vertex VFirst, VLast;
210 TopExp::Vertices( myEdge[i], VFirst, VLast, true);
211 const SMDS_MeshNode* node = SMESH_Algo::VertexNode( VFirst, meshDS );
212 double prevNormPar = ( i == 0 ? 0 : myNormPar[ i-1 ]); // normalized param
213 if ( node ) { // internal nodes may be missing
214 u2node.insert( make_pair( prevNormPar, node ));
217 MESSAGE(" NO NODE on VERTEX" );
221 // put 2nd vertex node for a last edge
222 if ( i+1 == myEdge.size() ) {
223 node = SMESH_Algo::VertexNode( VLast, meshDS );
225 MESSAGE(" NO NODE on VERTEX" );
228 u2node.insert( make_pair( 1., node ));
231 // put internal nodes
232 SMESHDS_SubMesh* sm = meshDS->MeshElements( myEdge[i] );
234 SMDS_NodeIteratorPtr nItr = sm->GetNodes();
235 double paramSize = myLast[i] - myFirst[i], r = myNormPar[i] - prevNormPar;
236 while ( nItr->more() ) {
237 const SMDS_MeshNode* node = nItr->next();
238 if ( myIgnoreMediumNodes && SMESH_MeshEditor::IsMedium( node, SMDSAbs_Edge ))
240 const SMDS_EdgePosition* epos =
241 static_cast<const SMDS_EdgePosition*>(node->GetPosition().get());
242 double u = epos->GetUParameter();
243 // paramSize is signed so orientation is taken into account
244 double normPar = prevNormPar + r * ( u - myFirst[i] ) / paramSize;
246 if ( normPar > 1 || normPar < 0) {
248 MESSAGE ( "WRONG normPar: "<<normPar<< " prevNormPar="<<prevNormPar
249 << " u="<<u << " myFirst[i]="<<myFirst[i]<< " myLast[i]="<<myLast[i]
250 << " paramSize="<<paramSize );
253 u2node.insert( make_pair( normPar, node ));
256 if ( u2node.size() != myNbPonits ) {
257 MESSAGE("Wrong node parameters on edges, u2node.size():"
258 <<u2node.size()<<" != myNbPonits:"<<myNbPonits);
262 // fill array of UVPtStruct
264 vector<uvPtStruct>* points = const_cast<vector<uvPtStruct>*>( &myPoints );
265 points->resize( myNbPonits );
268 double prevNormPar = 0, paramSize = myNormPar[ EdgeIndex ];
269 map< double, const SMDS_MeshNode*>::iterator u_node = u2node.begin();
270 for (int i = 0 ; u_node != u2node.end(); ++u_node, ++i ) {
271 UVPtStruct & uvPt = (*points)[i];
272 uvPt.node = u_node->second;
273 uvPt.x = uvPt.y = uvPt.normParam = u_node->first;
274 if ( isXConst ) uvPt.x = constValue;
275 else uvPt.y = constValue;
276 if ( myNormPar[ EdgeIndex ] < uvPt.normParam ) {
277 prevNormPar = myNormPar[ EdgeIndex ];
280 if ( EdgeIndex >= myEdge.size() ) {
282 MESSAGE ( "WRONg EdgeIndex " << 1+EdgeIndex
283 << " myNormPar.size()="<<myNormPar.size()
284 << " myNormPar["<< EdgeIndex<<"]="<< myNormPar[ EdgeIndex ]
285 << " uvPt.normParam="<<uvPt.normParam );
288 paramSize = myNormPar[ EdgeIndex ] - prevNormPar;
290 const SMDS_EdgePosition* epos =
291 dynamic_cast<const SMDS_EdgePosition*>(uvPt.node->GetPosition().get());
293 uvPt.param = epos->GetUParameter();
296 double r = ( uvPt.normParam - prevNormPar )/ paramSize;
297 // uvPt.param = myFirst[EdgeIndex] * ( 1 - r ) + myLast[EdgeIndex] * r;
298 uvPt.param = ( r > 0.5 ? myLast[EdgeIndex] : myFirst[EdgeIndex] );
300 if ( !myC2d[ EdgeIndex ].IsNull() ) {
301 gp_Pnt2d p = myC2d[ EdgeIndex ]->Value( uvPt.param );
306 uvPt.u = uvPt.v = 1e+100;
313 //================================================================================
315 * \brief Falsificate info on nodes
316 * \param nbSeg - nb of segments on the side
317 * \retval UVPtStruct* - array of data structures
319 //================================================================================
321 const vector<UVPtStruct>& StdMeshers_FaceSide::SimulateUVPtStruct(int nbSeg,
323 double constValue) const
325 if ( myFalsePoints.empty() ) {
327 if ( NbEdges() == 0 ) return myFalsePoints;
329 vector<uvPtStruct>* points = const_cast<vector<uvPtStruct>*>( &myFalsePoints );
330 points->resize( nbSeg+1 );
333 double prevNormPar = 0, paramSize = myNormPar[ EdgeIndex ];
334 for (int i = 0 ; i < myFalsePoints.size(); ++i ) {
335 double normPar = double(i) / double(nbSeg);
336 UVPtStruct & uvPt = (*points)[i];
338 uvPt.x = uvPt.y = uvPt.param = uvPt.normParam = normPar;
339 if ( isXConst ) uvPt.x = constValue;
340 else uvPt.y = constValue;
341 if ( myNormPar[ EdgeIndex ] < normPar ) {
342 prevNormPar = myNormPar[ EdgeIndex ];
344 paramSize = myNormPar[ EdgeIndex ] - prevNormPar;
346 double r = ( normPar - prevNormPar )/ paramSize;
347 uvPt.param = myFirst[EdgeIndex] * ( 1 - r ) + myLast[EdgeIndex] * r;
348 if ( !myC2d[ EdgeIndex ].IsNull() ) {
349 gp_Pnt2d p = myC2d[ EdgeIndex ]->Value( uvPt.param );
354 uvPt.u = uvPt.v = 1e+100;
358 return myFalsePoints;
360 // gp_Pnt StdMeshers_FaceSide::Value(double U) const
364 //================================================================================
366 * \brief reverse order of vector elements
367 * \param vec - vector to reverse
369 //================================================================================
371 template <typename T > void reverse(vector<T> & vec)
373 for ( int f=0, r=vec.size()-1; f < r; ++f, --r )
374 std::swap( vec[f], vec[r] );
377 //================================================================================
379 * \brief Change orientation of side geometry
381 //================================================================================
383 void StdMeshers_FaceSide::Reverse()
385 int nbEdges = myEdge.size();
386 for ( int i = nbEdges-1; i >= 0; --i ) {
387 std::swap( myFirst[i], myLast[i] );
389 if ( i > 0 ) // at the first loop 1. is overwritten
390 myNormPar[i] = 1 - myNormPar[i-1];
397 reverse( myNormPar );
399 myNormPar[nbEdges-1]=1.;
401 myFalsePoints.clear();
404 //================================================================================
406 * \brief Show side features
408 //================================================================================
410 void StdMeshers_FaceSide::dump(const char* msg) const
413 if (msg) MESSAGE ( std::endl << msg );
414 MESSAGE_BEGIN ("NB EDGES: "<< myEdge.size() );
415 MESSAGE_ADD ( "nbPoints: "<<myNbPonits<<" vecSize: " << myPoints.size()<<" "<<myFalsePoints.size() );
416 for ( int i=0; i<myEdge.size(); ++i)
418 MESSAGE_ADD ( "\t"<<i+1 );
419 MESSAGE_ADD ( "\tEDGE: " );
420 if (myEdge[i].IsNull()) {
421 MESSAGE_ADD ( "NULL" );
424 TopAbs::Print(myEdge[i].Orientation(),cout)<<" "<<myEdge[i].TShape().operator->()<<endl;
425 MESSAGE_ADD ( "\tV1: " << TopExp::FirstVertex( myEdge[i], 1).TShape().operator->()
426 << " V2: " << TopExp::LastVertex( myEdge[i], 1).TShape().operator->() );
428 MESSAGE_ADD ( "\tC2d: ");
430 if (myC2d[i].IsNull()) {
431 MESSAGE_ADD ( "NULL" );
434 MESSAGE_ADD ( myC2d[i].operator->() );
437 MESSAGE_ADD ( "\tF: "<<myFirst[i]<< " L: "<< myLast[i] );
438 MESSAGE_END ( "\tnormPar: "<<myNormPar[i]<<endl );
443 //================================================================================
445 * \brief Creates a Adaptor2d_Curve2d to be used in SMESH_Block
446 * \retval Adaptor2d_Curve2d* -
448 //================================================================================
450 struct Adaptor2dCurve2d : public Adaptor2d_Curve2d
452 const StdMeshers_FaceSide* mySide;
453 Adaptor2dCurve2d(const StdMeshers_FaceSide* faceSide):mySide(faceSide) {}
454 gp_Pnt2d Value(const Standard_Real U) const { return mySide->Value2d( U ); }
455 Standard_Real FirstParameter() const { return 0; }
456 Standard_Real LastParameter() const { return 1; }
459 Adaptor2d_Curve2d* StdMeshers_FaceSide::GetCurve2d() const
461 return new Adaptor2dCurve2d( this );
464 //================================================================================
466 * \brief Creates a fully functional Adaptor_Curve
468 //================================================================================
470 BRepAdaptor_CompCurve* StdMeshers_FaceSide::GetCurve3d() const
472 if ( myEdge.empty() )
475 // if ( myEdge.size() == 1 )
476 // return new BRepAdaptor_Curve( myEdge[0] );
479 BRep_Builder aBuilder;
480 aBuilder.MakeWire(aWire);
481 for ( int i=0; i<myEdge.size(); ++i )
482 aBuilder.Add( aWire, myEdge[i] );
483 return new BRepAdaptor_CompCurve( aWire );
486 //================================================================================
488 * \brief Return 2D point by normalized parameter
489 * \param U - normalized parameter value
490 * \retval gp_Pnt2d - point
492 //================================================================================
494 gp_Pnt2d StdMeshers_FaceSide::Value2d(double U) const
496 if ( !myC2d[0].IsNull() ) {
497 int i = EdgeIndex( U );
498 double prevU = i ? myNormPar[ i-1 ] : 0;
499 double r = ( U - prevU )/ ( myNormPar[ i ] - prevU );
500 return myC2d[ i ]->Value( myFirst[i] * ( 1 - r ) + myLast[i] * r );
502 //return gp_Pnt2d( 1e+100, 1e+100 );
503 return myDefaultPnt2d;
506 //================================================================================
508 * \brief Return wires of a face as StdMeshers_FaceSide's
510 //================================================================================
512 TSideVector StdMeshers_FaceSide::GetFaceWires(const TopoDS_Face& theFace,
513 SMESH_Mesh & theMesh,
514 const bool theIgnoreMediumNodes,
518 list< TopoDS_Edge > edges;
519 list< int > nbEdgesInWires;
520 int nbWires = SMESH_Block::GetOrderedEdges (theFace, V1, edges, nbEdgesInWires);
522 // split list of all edges into separate wires
523 TSideVector wires( nbWires );
524 list< int >::iterator nbE = nbEdgesInWires.begin();
525 list< TopoDS_Edge >::iterator from, to;
526 from = to = edges.begin();
527 for ( int iW = 0; iW < nbWires; ++iW )
529 std::advance( to, *nbE++ );
530 list< TopoDS_Edge > wireEdges( from, to );
531 // assure that there is a node on the first vertex
532 // as StdMeshers_FaceSide::GetUVPtStruct() requires
533 while ( !SMESH_Algo::VertexNode( TopExp::FirstVertex( wireEdges.front(), true),
534 theMesh.GetMeshDS()))
536 wireEdges.splice(wireEdges.end(), wireEdges,
537 wireEdges.begin(), ++wireEdges.begin());
538 if ( from->IsSame( wireEdges.front() )) {
540 ( new SMESH_ComputeError(COMPERR_BAD_INPUT_MESH,"No nodes on vertices"));
541 return TSideVector(0);
544 const bool isForward = true;
545 StdMeshers_FaceSide* wire = new StdMeshers_FaceSide( theFace, wireEdges, &theMesh,
546 isForward, theIgnoreMediumNodes);
547 wires[ iW ] = StdMeshers_FaceSidePtr( wire );