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_Regular_1D.cxx
24 // Moved here from SMESH_Regular_1D.cxx
25 // Author : Paul RASCLE, EDF
28 #include "StdMeshers_Regular_1D.hxx"
29 #include "StdMeshers_Distribution.hxx"
31 #include "StdMeshers_Arithmetic1D.hxx"
32 #include "StdMeshers_AutomaticLength.hxx"
33 #include "StdMeshers_Deflection1D.hxx"
34 #include "StdMeshers_LocalLength.hxx"
35 #include "StdMeshers_MaxLength.hxx"
36 #include "StdMeshers_NumberOfSegments.hxx"
37 #include "StdMeshers_Propagation.hxx"
38 #include "StdMeshers_SegmentLengthAroundVertex.hxx"
39 #include "StdMeshers_StartEndLength.hxx"
41 #include "SMESH_Gen.hxx"
42 #include "SMESH_Mesh.hxx"
43 #include "SMESH_HypoFilter.hxx"
44 #include "SMESH_subMesh.hxx"
45 #include "SMESH_subMeshEventListener.hxx"
46 #include "SMESH_Comment.hxx"
48 #include "SMDS_MeshElement.hxx"
49 #include "SMDS_MeshNode.hxx"
51 #include "Utils_SALOME_Exception.hxx"
52 #include "utilities.h"
54 #include <BRepAdaptor_Curve.hxx>
55 #include <BRep_Tool.hxx>
56 #include <GCPnts_AbscissaPoint.hxx>
57 #include <GCPnts_UniformAbscissa.hxx>
58 #include <GCPnts_UniformDeflection.hxx>
59 #include <Precision.hxx>
61 #include <TopExp_Explorer.hxx>
63 #include <TopoDS_Edge.hxx>
70 //=============================================================================
74 //=============================================================================
76 StdMeshers_Regular_1D::StdMeshers_Regular_1D(int hypId, int studyId,
77 SMESH_Gen * gen):SMESH_1D_Algo(hypId, studyId, gen)
79 MESSAGE("StdMeshers_Regular_1D::StdMeshers_Regular_1D");
81 _shapeType = (1 << TopAbs_EDGE);
84 _compatibleHypothesis.push_back("LocalLength");
85 _compatibleHypothesis.push_back("MaxLength");
86 _compatibleHypothesis.push_back("NumberOfSegments");
87 _compatibleHypothesis.push_back("StartEndLength");
88 _compatibleHypothesis.push_back("Deflection1D");
89 _compatibleHypothesis.push_back("Arithmetic1D");
90 _compatibleHypothesis.push_back("FixedPoints1D");
91 _compatibleHypothesis.push_back("AutomaticLength");
93 _compatibleHypothesis.push_back("QuadraticMesh"); // auxiliary !!!
94 _compatibleHypothesis.push_back("Propagation"); // auxiliary !!!
97 //=============================================================================
101 //=============================================================================
103 StdMeshers_Regular_1D::~StdMeshers_Regular_1D()
107 //=============================================================================
111 //=============================================================================
113 bool StdMeshers_Regular_1D::CheckHypothesis
115 const TopoDS_Shape& aShape,
116 SMESH_Hypothesis::Hypothesis_Status& aStatus)
119 _quadraticMesh = false;
121 const bool ignoreAuxiliaryHyps = false;
122 const list <const SMESHDS_Hypothesis * > & hyps =
123 GetUsedHypothesis(aMesh, aShape, ignoreAuxiliaryHyps);
125 // find non-auxiliary hypothesis
126 const SMESHDS_Hypothesis *theHyp = 0;
127 list <const SMESHDS_Hypothesis * >::const_iterator h = hyps.begin();
128 for ( ; h != hyps.end(); ++h ) {
129 if ( static_cast<const SMESH_Hypothesis*>(*h)->IsAuxiliary() ) {
130 if ( strcmp( "QuadraticMesh", (*h)->GetName() ) == 0 )
131 _quadraticMesh = true;
135 theHyp = *h; // use only the first non-auxiliary hypothesis
141 aStatus = SMESH_Hypothesis::HYP_MISSING;
142 return false; // can't work without a hypothesis
145 string hypName = theHyp->GetName();
147 if (hypName == "LocalLength")
149 const StdMeshers_LocalLength * hyp =
150 dynamic_cast <const StdMeshers_LocalLength * >(theHyp);
152 _value[ BEG_LENGTH_IND ] = hyp->GetLength();
153 _value[ PRECISION_IND ] = hyp->GetPrecision();
154 ASSERT( _value[ BEG_LENGTH_IND ] > 0 );
155 _hypType = LOCAL_LENGTH;
156 aStatus = SMESH_Hypothesis::HYP_OK;
159 else if (hypName == "MaxLength")
161 const StdMeshers_MaxLength * hyp =
162 dynamic_cast <const StdMeshers_MaxLength * >(theHyp);
164 _value[ BEG_LENGTH_IND ] = hyp->GetLength();
165 if ( hyp->GetUsePreestimatedLength() ) {
166 if ( int nbSeg = aMesh.GetGen()->GetBoundaryBoxSegmentation() )
167 _value[ BEG_LENGTH_IND ] = aMesh.GetShapeDiagonalSize() / nbSeg;
169 ASSERT( _value[ BEG_LENGTH_IND ] > 0 );
170 _hypType = MAX_LENGTH;
171 aStatus = SMESH_Hypothesis::HYP_OK;
174 else if (hypName == "NumberOfSegments")
176 const StdMeshers_NumberOfSegments * hyp =
177 dynamic_cast <const StdMeshers_NumberOfSegments * >(theHyp);
179 _ivalue[ NB_SEGMENTS_IND ] = hyp->GetNumberOfSegments();
180 ASSERT( _ivalue[ NB_SEGMENTS_IND ] > 0 );
181 _ivalue[ DISTR_TYPE_IND ] = (int) hyp->GetDistrType();
182 switch (_ivalue[ DISTR_TYPE_IND ])
184 case StdMeshers_NumberOfSegments::DT_Scale:
185 _value[ SCALE_FACTOR_IND ] = hyp->GetScaleFactor();
186 _revEdgesIDs = hyp->GetReversedEdges();
188 case StdMeshers_NumberOfSegments::DT_TabFunc:
189 _vvalue[ TAB_FUNC_IND ] = hyp->GetTableFunction();
190 _revEdgesIDs = hyp->GetReversedEdges();
192 case StdMeshers_NumberOfSegments::DT_ExprFunc:
193 _svalue[ EXPR_FUNC_IND ] = hyp->GetExpressionFunction();
194 _revEdgesIDs = hyp->GetReversedEdges();
196 case StdMeshers_NumberOfSegments::DT_Regular:
202 if (_ivalue[ DISTR_TYPE_IND ] == StdMeshers_NumberOfSegments::DT_TabFunc ||
203 _ivalue[ DISTR_TYPE_IND ] == StdMeshers_NumberOfSegments::DT_ExprFunc)
204 _ivalue[ CONV_MODE_IND ] = hyp->ConversionMode();
205 _hypType = NB_SEGMENTS;
206 aStatus = SMESH_Hypothesis::HYP_OK;
209 else if (hypName == "Arithmetic1D")
211 const StdMeshers_Arithmetic1D * hyp =
212 dynamic_cast <const StdMeshers_Arithmetic1D * >(theHyp);
214 _value[ BEG_LENGTH_IND ] = hyp->GetLength( true );
215 _value[ END_LENGTH_IND ] = hyp->GetLength( false );
216 ASSERT( _value[ BEG_LENGTH_IND ] > 0 && _value[ END_LENGTH_IND ] > 0 );
217 _hypType = ARITHMETIC_1D;
219 _revEdgesIDs = hyp->GetReversedEdges();
221 aStatus = SMESH_Hypothesis::HYP_OK;
224 else if (hypName == "FixedPoints1D") {
225 _fpHyp = dynamic_cast <const StdMeshers_FixedPoints1D*>(theHyp);
227 _hypType = FIXED_POINTS_1D;
229 _revEdgesIDs = _fpHyp->GetReversedEdges();
231 aStatus = SMESH_Hypothesis::HYP_OK;
234 else if (hypName == "StartEndLength")
236 const StdMeshers_StartEndLength * hyp =
237 dynamic_cast <const StdMeshers_StartEndLength * >(theHyp);
239 _value[ BEG_LENGTH_IND ] = hyp->GetLength( true );
240 _value[ END_LENGTH_IND ] = hyp->GetLength( false );
241 ASSERT( _value[ BEG_LENGTH_IND ] > 0 && _value[ END_LENGTH_IND ] > 0 );
242 _hypType = BEG_END_LENGTH;
244 _revEdgesIDs = hyp->GetReversedEdges();
246 aStatus = SMESH_Hypothesis::HYP_OK;
249 else if (hypName == "Deflection1D")
251 const StdMeshers_Deflection1D * hyp =
252 dynamic_cast <const StdMeshers_Deflection1D * >(theHyp);
254 _value[ DEFLECTION_IND ] = hyp->GetDeflection();
255 ASSERT( _value[ DEFLECTION_IND ] > 0 );
256 _hypType = DEFLECTION;
257 aStatus = SMESH_Hypothesis::HYP_OK;
260 else if (hypName == "AutomaticLength")
262 StdMeshers_AutomaticLength * hyp = const_cast<StdMeshers_AutomaticLength *>
263 (dynamic_cast <const StdMeshers_AutomaticLength * >(theHyp));
265 _value[ BEG_LENGTH_IND ] = _value[ END_LENGTH_IND ] = hyp->GetLength( &aMesh, aShape );
266 // _value[ BEG_LENGTH_IND ] = hyp->GetLength( &aMesh, aShape );
267 // _value[ END_LENGTH_IND ] = Precision::Confusion(); // ?? or set to zero?
268 ASSERT( _value[ BEG_LENGTH_IND ] > 0 );
269 _hypType = MAX_LENGTH;
270 aStatus = SMESH_Hypothesis::HYP_OK;
273 aStatus = SMESH_Hypothesis::HYP_INCOMPATIBLE;
275 return ( _hypType != NONE );
278 static bool computeParamByFunc(Adaptor3d_Curve& C3d, double first, double last,
279 double length, bool theReverse,
280 int nbSeg, Function& func,
281 list<double>& theParams)
284 //OSD::SetSignal( true );
289 MESSAGE( "computeParamByFunc" );
291 int nbPnt = 1 + nbSeg;
292 vector<double> x(nbPnt, 0.);
294 if (!buildDistribution(func, 0.0, 1.0, nbSeg, x, 1E-4))
297 MESSAGE( "Points:\n" );
299 for ( int i=0; i<=nbSeg; i++ )
301 sprintf( buf, "%f\n", float(x[i] ) );
307 // apply parameters in range [0,1] to the space of the curve
308 double prevU = first;
315 for( int i = 1; i < nbSeg; i++ )
317 double curvLength = length * (x[i] - x[i-1]) * sign;
318 GCPnts_AbscissaPoint Discret( C3d, curvLength, prevU );
319 if ( !Discret.IsDone() )
321 double U = Discret.Parameter();
322 if ( U > first && U < last )
323 theParams.push_back( U );
334 //================================================================================
336 * \brief adjust internal node parameters so that the last segment length == an
337 * \param a1 - the first segment length
338 * \param an - the last segment length
339 * \param U1 - the first edge parameter
340 * \param Un - the last edge parameter
341 * \param length - the edge length
342 * \param C3d - the edge curve
343 * \param theParams - internal node parameters to adjust
344 * \param adjustNeighbors2an - to adjust length of segments next to the last one
345 * and not to remove parameters
347 //================================================================================
349 static void compensateError(double a1, double an,
350 double U1, double Un,
352 Adaptor3d_Curve& C3d,
353 list<double> & theParams,
354 bool adjustNeighbors2an = false)
356 int i, nPar = theParams.size();
357 if ( a1 + an < length && nPar > 1 )
359 bool reverse = ( U1 > Un );
360 GCPnts_AbscissaPoint Discret(C3d, reverse ? an : -an, Un);
361 if ( !Discret.IsDone() )
363 double Utgt = Discret.Parameter(); // target value of the last parameter
364 list<double>::reverse_iterator itU = theParams.rbegin();
365 double Ul = *itU++; // real value of the last parameter
366 double dUn = Utgt - Ul; // parametric error of <an>
367 if ( Abs(dUn) <= Precision::Confusion() )
369 double dU = Abs( Ul - *itU ); // parametric length of the last but one segment
370 if ( adjustNeighbors2an || Abs(dUn) < 0.5 * dU ) { // last segment is a bit shorter than it should
371 // move the last parameter to the edge beginning
373 else { // last segment is much shorter than it should -> remove the last param and
374 theParams.pop_back(); nPar--; // move the rest points toward the edge end
375 dUn = Utgt - theParams.back();
378 double q = dUn / ( nPar - 1 );
379 if ( !adjustNeighbors2an ) {
380 for ( itU = theParams.rbegin(), i = 1; i < nPar; itU++, i++ ) {
386 theParams.back() += dUn;
387 double sign = reverse ? -1 : 1;
388 double prevU = theParams.back();
389 itU = theParams.rbegin();
390 for ( ++itU, i = 2; i < nPar; ++itU, i++ ) {
391 double newU = *itU + dUn;
392 if ( newU*sign < prevU*sign ) {
396 else { // set U between prevU and next valid param
397 list<double>::reverse_iterator itU2 = itU;
400 while ( (*itU2)*sign > prevU*sign ) {
403 dU = ( *itU2 - prevU ) / nb;
404 while ( itU != itU2 ) {
414 //================================================================================
416 * \brief Class used to clean mesh on edges when 0D hyp modified.
417 * Common approach doesn't work when 0D algo is missing because the 0D hyp is
418 * considered as not participating in computation whereas it is used by 1D algo.
420 //================================================================================
422 // struct VertexEventListener : public SMESH_subMeshEventListener
424 // VertexEventListener():SMESH_subMeshEventListener(0) // won't be deleted by submesh
427 // * \brief Clean mesh on edges
428 // * \param event - algo_event or compute_event itself (of SMESH_subMesh)
429 // * \param eventType - ALGO_EVENT or COMPUTE_EVENT (of SMESH_subMesh)
430 // * \param subMesh - the submesh where the event occures
432 // void ProcessEvent(const int event, const int eventType, SMESH_subMesh* subMesh,
433 // EventListenerData*, const SMESH_Hypothesis*)
435 // if ( eventType == SMESH_subMesh::ALGO_EVENT) // all algo events
437 // subMesh->ComputeStateEngine( SMESH_subMesh::MODIF_ALGO_STATE );
440 // }; // struct VertexEventListener
442 //=============================================================================
444 * \brief Sets event listener to vertex submeshes
445 * \param subMesh - submesh where algo is set
447 * This method is called when a submesh gets HYP_OK algo_state.
448 * After being set, event listener is notified on each event of a submesh.
450 //=============================================================================
452 void StdMeshers_Regular_1D::SetEventListener(SMESH_subMesh* subMesh)
454 StdMeshers_Propagation::SetPropagationMgr( subMesh );
457 //=============================================================================
460 * \param subMesh - restored submesh
462 * This method is called only if a submesh has HYP_OK algo_state.
464 //=============================================================================
466 void StdMeshers_Regular_1D::SubmeshRestored(SMESH_subMesh* subMesh)
470 //=============================================================================
472 * \brief Return StdMeshers_SegmentLengthAroundVertex assigned to vertex
474 //=============================================================================
476 const StdMeshers_SegmentLengthAroundVertex*
477 StdMeshers_Regular_1D::getVertexHyp(SMESH_Mesh & theMesh,
478 const TopoDS_Vertex & theV)
480 static SMESH_HypoFilter filter( SMESH_HypoFilter::HasName("SegmentAroundVertex_0D"));
481 if ( const SMESH_Hypothesis * h = theMesh.GetHypothesis( theV, filter, true ))
483 SMESH_Algo* algo = const_cast< SMESH_Algo* >( static_cast< const SMESH_Algo* > ( h ));
484 const list <const SMESHDS_Hypothesis *> & hypList = algo->GetUsedHypothesis( theMesh, theV, 0 );
485 if ( !hypList.empty() && string("SegmentLengthAroundVertex") == hypList.front()->GetName() )
486 return static_cast<const StdMeshers_SegmentLengthAroundVertex*>( hypList.front() );
491 //================================================================================
493 * \brief Tune parameters to fit "SegmentLengthAroundVertex" hypothesis
494 * \param theC3d - wire curve
495 * \param theLength - curve length
496 * \param theParameters - internal nodes parameters to modify
497 * \param theVf - 1st vertex
498 * \param theVl - 2nd vertex
500 //================================================================================
502 void StdMeshers_Regular_1D::redistributeNearVertices (SMESH_Mesh & theMesh,
503 Adaptor3d_Curve & theC3d,
505 std::list< double > & theParameters,
506 const TopoDS_Vertex & theVf,
507 const TopoDS_Vertex & theVl)
509 double f = theC3d.FirstParameter(), l = theC3d.LastParameter();
510 int nPar = theParameters.size();
511 for ( int isEnd1 = 0; isEnd1 < 2; ++isEnd1 )
513 const TopoDS_Vertex & V = isEnd1 ? theVf : theVl;
514 const StdMeshers_SegmentLengthAroundVertex* hyp = getVertexHyp (theMesh, V );
516 double vertexLength = hyp->GetLength();
517 if ( vertexLength > theLength / 2.0 )
519 if ( isEnd1 ) { // to have a segment of interest at end of theParameters
520 theParameters.reverse();
523 if ( _hypType == NB_SEGMENTS )
525 compensateError(0, vertexLength, f, l, theLength, theC3d, theParameters, true );
527 else if ( nPar <= 3 )
530 vertexLength = -vertexLength;
531 GCPnts_AbscissaPoint Discret(theC3d, vertexLength, l);
532 if ( Discret.IsDone() ) {
534 theParameters.push_back( Discret.Parameter());
536 double L = GCPnts_AbscissaPoint::Length( theC3d, theParameters.back(), l);
537 if ( vertexLength < L / 2.0 )
538 theParameters.push_back( Discret.Parameter());
540 compensateError(0, vertexLength, f, l, theLength, theC3d, theParameters, true );
546 // recompute params between the last segment and a middle one.
547 // find size of a middle segment
548 int nHalf = ( nPar-1 ) / 2;
549 list< double >::reverse_iterator itU = theParameters.rbegin();
550 std::advance( itU, nHalf );
552 double Lm = GCPnts_AbscissaPoint::Length( theC3d, Um, *itU);
553 double L = GCPnts_AbscissaPoint::Length( theC3d, *itU, l);
554 StdMeshers_Regular_1D algo( *this );
555 algo._hypType = BEG_END_LENGTH;
556 algo._value[ BEG_LENGTH_IND ] = Lm;
557 algo._value[ END_LENGTH_IND ] = vertexLength;
558 double from = *itU, to = l;
560 std::swap( from, to );
561 std::swap( algo._value[ BEG_LENGTH_IND ], algo._value[ END_LENGTH_IND ]);
564 if ( algo.computeInternalParameters( theMesh, theC3d, L, from, to, params, false ))
566 if ( isEnd1 ) params.reverse();
567 while ( 1 + nHalf-- )
568 theParameters.pop_back();
569 theParameters.splice( theParameters.end(), params );
573 compensateError(0, vertexLength, f, l, theLength, theC3d, theParameters, true );
577 theParameters.reverse();
582 //=============================================================================
586 //=============================================================================
587 bool StdMeshers_Regular_1D::computeInternalParameters(SMESH_Mesh & theMesh,
588 Adaptor3d_Curve& theC3d,
592 list<double> & theParams,
593 const bool theReverse,
594 bool theConsiderPropagation)
598 double f = theFirstU, l = theLastU;
607 if ( _hypType == MAX_LENGTH )
609 double nbseg = ceil(theLength / _value[ BEG_LENGTH_IND ]); // integer sup
611 nbseg = 1; // degenerated edge
612 eltSize = theLength / nbseg;
614 else if ( _hypType == LOCAL_LENGTH )
616 // Local Length hypothesis
617 double nbseg = ceil(theLength / _value[ BEG_LENGTH_IND ]); // integer sup
620 bool isFound = false;
621 if (theConsiderPropagation && !_mainEdge.IsNull()) // propagated from some other edge
623 // Advanced processing to assure equal number of segments in case of Propagation
624 SMESH_subMesh* sm = theMesh.GetSubMeshContaining(_mainEdge);
626 bool computed = sm->IsMeshComputed();
628 if (sm->GetComputeState() == SMESH_subMesh::READY_TO_COMPUTE) {
629 sm->ComputeStateEngine(SMESH_subMesh::COMPUTE);
630 computed = sm->IsMeshComputed();
634 SMESHDS_SubMesh* smds = sm->GetSubMeshDS();
635 int nb_segments = smds->NbElements();
636 if (nbseg - 1 <= nb_segments && nb_segments <= nbseg + 1) {
643 if (!isFound) // not found by meshed edge in the propagation chain, use precision
645 double aPrecision = _value[ PRECISION_IND ];
646 double nbseg_prec = ceil((theLength / _value[ BEG_LENGTH_IND ]) - aPrecision);
647 if (nbseg_prec == (nbseg - 1)) nbseg--;
651 nbseg = 1; // degenerated edge
652 eltSize = theLength / nbseg;
656 // Number Of Segments hypothesis
657 int NbSegm = _ivalue[ NB_SEGMENTS_IND ];
658 if ( NbSegm < 1 ) return false;
659 if ( NbSegm == 1 ) return true;
661 switch (_ivalue[ DISTR_TYPE_IND ])
663 case StdMeshers_NumberOfSegments::DT_Scale:
665 double scale = _value[ SCALE_FACTOR_IND ];
667 if (fabs(scale - 1.0) < Precision::Confusion()) {
668 // special case to avoid division by zero
669 for (int i = 1; i < NbSegm; i++) {
670 double param = f + (l - f) * i / NbSegm;
671 theParams.push_back( param );
674 // general case of scale distribution
678 double alpha = pow(scale, 1.0 / (NbSegm - 1));
679 double factor = (l - f) / (1.0 - pow(alpha, NbSegm));
681 for (int i = 1; i < NbSegm; i++) {
682 double param = f + factor * (1.0 - pow(alpha, i));
683 theParams.push_back( param );
689 case StdMeshers_NumberOfSegments::DT_TabFunc:
691 FunctionTable func(_vvalue[ TAB_FUNC_IND ], _ivalue[ CONV_MODE_IND ]);
692 return computeParamByFunc(theC3d, f, l, theLength, theReverse,
693 _ivalue[ NB_SEGMENTS_IND ], func,
697 case StdMeshers_NumberOfSegments::DT_ExprFunc:
699 FunctionExpr func(_svalue[ EXPR_FUNC_IND ].c_str(), _ivalue[ CONV_MODE_IND ]);
700 return computeParamByFunc(theC3d, f, l, theLength, theReverse,
701 _ivalue[ NB_SEGMENTS_IND ], func,
705 case StdMeshers_NumberOfSegments::DT_Regular:
706 eltSize = theLength / _ivalue[ NB_SEGMENTS_IND ];
712 GCPnts_UniformAbscissa Discret(theC3d, eltSize, f, l);
713 if ( !Discret.IsDone() )
714 return error( "GCPnts_UniformAbscissa failed");
716 int NbPoints = Discret.NbPoints();
717 for ( int i = 2; i < NbPoints; i++ )
719 double param = Discret.Parameter(i);
720 theParams.push_back( param );
722 compensateError( eltSize, eltSize, f, l, theLength, theC3d, theParams ); // for PAL9899
726 case BEG_END_LENGTH: {
728 // geometric progression: SUM(n) = ( a1 - an * q ) / ( 1 - q ) = theLength
730 double a1 = _value[ BEG_LENGTH_IND ];
731 double an = _value[ END_LENGTH_IND ];
732 double q = ( theLength - a1 ) / ( theLength - an );
734 double U1 = theReverse ? l : f;
735 double Un = theReverse ? f : l;
737 double eltSize = theReverse ? -a1 : a1;
739 // computes a point on a curve <theC3d> at the distance <eltSize>
740 // from the point of parameter <param>.
741 GCPnts_AbscissaPoint Discret( theC3d, eltSize, param );
742 if ( !Discret.IsDone() ) break;
743 param = Discret.Parameter();
744 if ( f < param && param < l )
745 theParams.push_back( param );
750 compensateError( a1, an, U1, Un, theLength, theC3d, theParams );
751 if (theReverse) theParams.reverse(); // NPAL18025
755 case ARITHMETIC_1D: {
757 // arithmetic progression: SUM(n) = ( an - a1 + q ) * ( a1 + an ) / ( 2 * q ) = theLength
759 double a1 = _value[ BEG_LENGTH_IND ];
760 double an = _value[ END_LENGTH_IND ];
762 double q = ( an - a1 ) / ( 2 *theLength/( a1 + an ) - 1 );
763 int n = int(fabs(q) > numeric_limits<double>::min() ? ( 1+( an-a1 )/q ) : ( 1+theLength/a1 ));
765 double U1 = theReverse ? l : f;
766 double Un = theReverse ? f : l;
773 while ( n-- > 0 && eltSize * ( Un - U1 ) > 0 ) {
774 // computes a point on a curve <theC3d> at the distance <eltSize>
775 // from the point of parameter <param>.
776 GCPnts_AbscissaPoint Discret( theC3d, eltSize, param );
777 if ( !Discret.IsDone() ) break;
778 param = Discret.Parameter();
779 if ( param > f && param < l )
780 theParams.push_back( param );
785 compensateError( a1, an, U1, Un, theLength, theC3d, theParams );
786 if (theReverse) theParams.reverse(); // NPAL18025
791 case FIXED_POINTS_1D: {
792 const std::vector<double>& aPnts = _fpHyp->GetPoints();
793 const std::vector<int>& nbsegs = _fpHyp->GetNbSegments();
795 TColStd_SequenceOfReal Params;
796 for(; i<aPnts.size(); i++) {
797 if( aPnts[i]<0.0001 || aPnts[i]>0.9999 ) continue;
799 bool IsExist = false;
800 for(; j<=Params.Length(); j++) {
801 if( fabs(aPnts[i]-Params.Value(j)) < 1e-4 ) {
805 if( aPnts[i]<Params.Value(j) ) break;
807 if(!IsExist) Params.InsertBefore(j,aPnts[i]);
809 double par2, par1, lp;
818 double eltSize, segmentSize = 0.;
819 double currAbscissa = 0;
820 for(i=0; i<Params.Length(); i++) {
821 int nbseg = ( i > nbsegs.size()-1 ) ? nbsegs[0] : nbsegs[i];
822 segmentSize = Params.Value(i+1)*theLength - currAbscissa;
823 currAbscissa += segmentSize;
824 GCPnts_AbscissaPoint APnt(theC3d, sign*segmentSize, par1);
826 return error( "GCPnts_AbscissaPoint failed");
827 par2 = APnt.Parameter();
828 eltSize = segmentSize/nbseg;
829 GCPnts_UniformAbscissa Discret(theC3d, eltSize, par1, par2);
831 Discret.Initialize(theC3d, eltSize, par2, par1);
833 Discret.Initialize(theC3d, eltSize, par1, par2);
834 if ( !Discret.IsDone() )
835 return error( "GCPnts_UniformAbscissa failed");
836 int NbPoints = Discret.NbPoints();
837 list<double> tmpParams;
838 for(int i=2; i<NbPoints; i++) {
839 double param = Discret.Parameter(i);
840 tmpParams.push_back( param );
843 compensateError( eltSize, eltSize, par2, par1, segmentSize, theC3d, tmpParams );
847 compensateError( eltSize, eltSize, par1, par2, segmentSize, theC3d, tmpParams );
849 list<double>::iterator itP = tmpParams.begin();
850 for(; itP != tmpParams.end(); itP++) {
851 theParams.push_back( *(itP) );
853 theParams.push_back( par2 );
858 int nbseg = ( nbsegs.size() > Params.Length() ) ? nbsegs[Params.Length()] : nbsegs[0];
859 segmentSize = theLength - currAbscissa;
860 eltSize = segmentSize/nbseg;
861 GCPnts_UniformAbscissa Discret;
863 Discret.Initialize(theC3d, eltSize, par1, lp);
865 Discret.Initialize(theC3d, eltSize, lp, par1);
866 if ( !Discret.IsDone() )
867 return error( "GCPnts_UniformAbscissa failed");
868 int NbPoints = Discret.NbPoints();
869 list<double> tmpParams;
870 for(int i=2; i<NbPoints; i++) {
871 double param = Discret.Parameter(i);
872 tmpParams.push_back( param );
875 compensateError( eltSize, eltSize, lp, par1, segmentSize, theC3d, tmpParams );
879 compensateError( eltSize, eltSize, par1, lp, segmentSize, theC3d, tmpParams );
881 list<double>::iterator itP = tmpParams.begin();
882 for(; itP != tmpParams.end(); itP++) {
883 theParams.push_back( *(itP) );
887 theParams.reverse(); // NPAL18025
894 GCPnts_UniformDeflection Discret(theC3d, _value[ DEFLECTION_IND ], f, l, true);
895 if ( !Discret.IsDone() )
898 int NbPoints = Discret.NbPoints();
899 for ( int i = 2; i < NbPoints; i++ )
901 double param = Discret.Parameter(i);
902 theParams.push_back( param );
913 //=============================================================================
917 //=============================================================================
919 bool StdMeshers_Regular_1D::Compute(SMESH_Mesh & theMesh, const TopoDS_Shape & theShape)
921 if ( _hypType == NONE )
924 SMESHDS_Mesh * meshDS = theMesh.GetMeshDS();
926 const TopoDS_Edge & EE = TopoDS::Edge(theShape);
927 TopoDS_Edge E = TopoDS::Edge(EE.Oriented(TopAbs_FORWARD));
928 int shapeID = meshDS->ShapeToIndex( E );
931 Handle(Geom_Curve) Curve = BRep_Tool::Curve(E, f, l);
933 TopoDS_Vertex VFirst, VLast;
934 TopExp::Vertices(E, VFirst, VLast); // Vfirst corresponds to f and Vlast to l
936 ASSERT(!VFirst.IsNull());
937 ASSERT(!VLast.IsNull());
938 const SMDS_MeshNode * idFirst = SMESH_Algo::VertexNode( VFirst, meshDS );
939 const SMDS_MeshNode * idLast = SMESH_Algo::VertexNode( VLast, meshDS );
940 if (!idFirst || !idLast)
941 return error( COMPERR_BAD_INPUT_MESH, "No node on vertex");
945 list< double > params;
946 bool reversed = false;
947 if ( theMesh.GetShapeToMesh().ShapeType() >= TopAbs_WIRE ) {
948 reversed = ( EE.Orientation() == TopAbs_REVERSED );
950 if ( !_mainEdge.IsNull() ) {
951 reversed = ( _mainEdge.Orientation() == TopAbs_REVERSED );
953 else if ( _revEdgesIDs.size() > 0 ) {
954 for ( int i = 0; i < _revEdgesIDs.size(); i++) {
955 if ( _revEdgesIDs[i] == shapeID ) {
956 reversed = !reversed;
961 BRepAdaptor_Curve C3d( E );
962 double length = EdgeLength( E );
963 if ( ! computeInternalParameters( theMesh, C3d, length, f, l, params, reversed, true )) {
966 redistributeNearVertices( theMesh, C3d, length, params, VFirst, VLast );
968 // edge extrema (indexes : 1 & NbPoints) already in SMDS (TopoDS_Vertex)
969 // only internal nodes receive an edge position with param on curve
971 const SMDS_MeshNode * idPrev = idFirst;
985 for (list<double>::iterator itU = params.begin(); itU != params.end(); itU++) {
987 gp_Pnt P = Curve->Value(param);
989 //Add the Node in the DataStructure
990 SMDS_MeshNode * node = meshDS->AddNode(P.X(), P.Y(), P.Z());
991 meshDS->SetNodeOnEdge(node, shapeID, param);
994 // create medium node
995 double prm = ( parPrev + param )/2;
996 gp_Pnt PM = Curve->Value(prm);
997 SMDS_MeshNode * NM = meshDS->AddNode(PM.X(), PM.Y(), PM.Z());
998 meshDS->SetNodeOnEdge(NM, shapeID, prm);
999 SMDS_MeshEdge * edge = meshDS->AddEdge(idPrev, node, NM);
1000 meshDS->SetMeshElementOnShape(edge, shapeID);
1003 SMDS_MeshEdge * edge = meshDS->AddEdge(idPrev, node);
1004 meshDS->SetMeshElementOnShape(edge, shapeID);
1010 if(_quadraticMesh) {
1011 double prm = ( parPrev + parLast )/2;
1012 gp_Pnt PM = Curve->Value(prm);
1013 SMDS_MeshNode * NM = meshDS->AddNode(PM.X(), PM.Y(), PM.Z());
1014 meshDS->SetNodeOnEdge(NM, shapeID, prm);
1015 SMDS_MeshEdge * edge = meshDS->AddEdge(idPrev, idLast, NM);
1016 meshDS->SetMeshElementOnShape(edge, shapeID);
1019 SMDS_MeshEdge* edge = meshDS->AddEdge(idPrev, idLast);
1020 meshDS->SetMeshElementOnShape(edge, shapeID);
1025 //MESSAGE("************* Degenerated edge! *****************");
1027 // Edge is a degenerated Edge : We put n = 5 points on the edge.
1028 const int NbPoints = 5;
1029 BRep_Tool::Range( E, f, l ); // PAL15185
1030 double du = (l - f) / (NbPoints - 1);
1032 gp_Pnt P = BRep_Tool::Pnt(VFirst);
1034 const SMDS_MeshNode * idPrev = idFirst;
1035 for (int i = 2; i < NbPoints; i++) {
1036 double param = f + (i - 1) * du;
1037 SMDS_MeshNode * node = meshDS->AddNode(P.X(), P.Y(), P.Z());
1038 if(_quadraticMesh) {
1039 // create medium node
1040 double prm = param - du/2.;
1041 SMDS_MeshNode * NM = meshDS->AddNode(P.X(), P.Y(), P.Z());
1042 meshDS->SetNodeOnEdge(NM, shapeID, prm);
1043 SMDS_MeshEdge * edge = meshDS->AddEdge(idPrev, node, NM);
1044 meshDS->SetMeshElementOnShape(edge, shapeID);
1047 SMDS_MeshEdge * edge = meshDS->AddEdge(idPrev, node);
1048 meshDS->SetMeshElementOnShape(edge, shapeID);
1050 meshDS->SetNodeOnEdge(node, shapeID, param);
1053 if(_quadraticMesh) {
1054 // create medium node
1055 double prm = l - du/2.;
1056 SMDS_MeshNode * NM = meshDS->AddNode(P.X(), P.Y(), P.Z());
1057 meshDS->SetNodeOnEdge(NM, shapeID, prm);
1058 SMDS_MeshEdge * edge = meshDS->AddEdge(idPrev, idLast, NM);
1059 meshDS->SetMeshElementOnShape(edge, shapeID);
1062 SMDS_MeshEdge * edge = meshDS->AddEdge(idPrev, idLast);
1063 meshDS->SetMeshElementOnShape(edge, shapeID);
1070 //=============================================================================
1074 //=============================================================================
1076 bool StdMeshers_Regular_1D::Evaluate(SMESH_Mesh & theMesh,
1077 const TopoDS_Shape & theShape,
1078 MapShapeNbElems& aResMap)
1080 if ( _hypType == NONE )
1083 //SMESHDS_Mesh * meshDS = theMesh.GetMeshDS();
1085 const TopoDS_Edge & EE = TopoDS::Edge(theShape);
1086 TopoDS_Edge E = TopoDS::Edge(EE.Oriented(TopAbs_FORWARD));
1087 // int shapeID = meshDS->ShapeToIndex( E );
1090 Handle(Geom_Curve) Curve = BRep_Tool::Curve(E, f, l);
1092 TopoDS_Vertex VFirst, VLast;
1093 TopExp::Vertices(E, VFirst, VLast); // Vfirst corresponds to f and Vlast to l
1095 ASSERT(!VFirst.IsNull());
1096 ASSERT(!VLast.IsNull());
1098 std::vector<int> aVec(SMDSEntity_Last,0);
1100 if (!Curve.IsNull()) {
1101 list< double > params;
1103 BRepAdaptor_Curve C3d( E );
1104 double length = EdgeLength( E );
1105 if ( ! computeInternalParameters( theMesh, C3d, length, f, l, params, false, true )) {
1106 SMESH_subMesh * sm = theMesh.GetSubMesh(theShape);
1107 aResMap.insert(std::make_pair(sm,aVec));
1108 SMESH_ComputeErrorPtr& smError = sm->GetComputeError();
1109 smError.reset( new SMESH_ComputeError(COMPERR_ALGO_FAILED,"Submesh can not be evaluated",this));
1112 redistributeNearVertices( theMesh, C3d, length, params, VFirst, VLast );
1114 if(_quadraticMesh) {
1115 aVec[SMDSEntity_Node] = 2*params.size() + 1;
1116 aVec[SMDSEntity_Quad_Edge] = params.size() + 1;
1119 aVec[SMDSEntity_Node] = params.size();
1120 aVec[SMDSEntity_Edge] = params.size() + 1;
1125 //MESSAGE("************* Degenerated edge! *****************");
1126 // Edge is a degenerated Edge : We put n = 5 points on the edge.
1127 if(_quadraticMesh) {
1128 aVec[SMDSEntity_Node] = 11;
1129 aVec[SMDSEntity_Quad_Edge] = 6;
1132 aVec[SMDSEntity_Node] = 5;
1133 aVec[SMDSEntity_Edge] = 6;
1137 SMESH_subMesh * sm = theMesh.GetSubMesh(theShape);
1138 aResMap.insert(std::make_pair(sm,aVec));
1144 //=============================================================================
1146 * See comments in SMESH_Algo.cxx
1148 //=============================================================================
1150 const list <const SMESHDS_Hypothesis *> &
1151 StdMeshers_Regular_1D::GetUsedHypothesis(SMESH_Mesh & aMesh,
1152 const TopoDS_Shape & aShape,
1153 const bool ignoreAuxiliary)
1155 _usedHypList.clear();
1156 _mainEdge.Nullify();
1158 SMESH_HypoFilter auxiliaryFilter, compatibleFilter;
1159 auxiliaryFilter.Init( SMESH_HypoFilter::IsAuxiliary() );
1160 const bool ignoreAux = true;
1161 InitCompatibleHypoFilter( compatibleFilter, ignoreAux );
1163 // get non-auxiliary assigned to aShape
1164 int nbHyp = aMesh.GetHypotheses( aShape, compatibleFilter, _usedHypList, false );
1166 if (nbHyp == 0 && aShape.ShapeType() == TopAbs_EDGE)
1168 // Check, if propagated from some other edge
1169 _mainEdge = StdMeshers_Propagation::GetPropagationSource( aMesh, aShape );
1170 if ( !_mainEdge.IsNull() )
1172 // Propagation of 1D hypothesis from <aMainEdge> on this edge;
1173 // get non-auxiliary assigned to _mainEdge
1174 nbHyp = aMesh.GetHypotheses( _mainEdge, compatibleFilter, _usedHypList, true );
1178 if (nbHyp == 0) // nothing propagated nor assigned to aShape
1180 SMESH_Algo::GetUsedHypothesis( aMesh, aShape, ignoreAuxiliary );
1181 nbHyp = _usedHypList.size();
1185 // get auxiliary hyps from aShape
1186 aMesh.GetHypotheses( aShape, auxiliaryFilter, _usedHypList, true );
1188 if ( nbHyp > 1 && ignoreAuxiliary )
1189 _usedHypList.clear(); //only one compatible non-auxiliary hypothesis allowed
1191 return _usedHypList;