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 );
332 //================================================================================
334 * \brief adjust internal node parameters so that the last segment length == an
335 * \param a1 - the first segment length
336 * \param an - the last segment length
337 * \param U1 - the first edge parameter
338 * \param Un - the last edge parameter
339 * \param length - the edge length
340 * \param C3d - the edge curve
341 * \param theParams - internal node parameters to adjust
342 * \param adjustNeighbors2an - to adjust length of segments next to the last one
343 * and not to remove parameters
345 //================================================================================
347 static void compensateError(double a1, double an,
348 double U1, double Un,
350 Adaptor3d_Curve& C3d,
351 list<double> & theParams,
352 bool adjustNeighbors2an = false)
354 int i, nPar = theParams.size();
355 if ( a1 + an < length && nPar > 1 )
357 bool reverse = ( U1 > Un );
358 GCPnts_AbscissaPoint Discret(C3d, reverse ? an : -an, Un);
359 if ( !Discret.IsDone() )
361 double Utgt = Discret.Parameter(); // target value of the last parameter
362 list<double>::reverse_iterator itU = theParams.rbegin();
363 double Ul = *itU++; // real value of the last parameter
364 double dUn = Utgt - Ul; // parametric error of <an>
365 if ( Abs(dUn) <= Precision::Confusion() )
367 double dU = Abs( Ul - *itU ); // parametric length of the last but one segment
368 if ( adjustNeighbors2an || Abs(dUn) < 0.5 * dU ) { // last segment is a bit shorter than it should
369 // move the last parameter to the edge beginning
371 else { // last segment is much shorter than it should -> remove the last param and
372 theParams.pop_back(); nPar--; // move the rest points toward the edge end
373 dUn = Utgt - theParams.back();
376 double q = dUn / ( nPar - 1 );
377 if ( !adjustNeighbors2an ) {
378 for ( itU = theParams.rbegin(), i = 1; i < nPar; itU++, i++ ) {
384 theParams.back() += dUn;
385 double sign = reverse ? -1 : 1;
386 double prevU = theParams.back();
387 itU = theParams.rbegin();
388 for ( ++itU, i = 2; i < nPar; ++itU, i++ ) {
389 double newU = *itU + dUn;
390 if ( newU*sign < prevU*sign ) {
394 else { // set U between prevU and next valid param
395 list<double>::reverse_iterator itU2 = itU;
398 while ( (*itU2)*sign > prevU*sign ) {
401 dU = ( *itU2 - prevU ) / nb;
402 while ( itU != itU2 ) {
412 //================================================================================
414 * \brief Class used to clean mesh on edges when 0D hyp modified.
415 * Common approach doesn't work when 0D algo is missing because the 0D hyp is
416 * considered as not participating in computation whereas it is used by 1D algo.
418 //================================================================================
420 // struct VertexEventListener : public SMESH_subMeshEventListener
422 // VertexEventListener():SMESH_subMeshEventListener(0) // won't be deleted by submesh
425 // * \brief Clean mesh on edges
426 // * \param event - algo_event or compute_event itself (of SMESH_subMesh)
427 // * \param eventType - ALGO_EVENT or COMPUTE_EVENT (of SMESH_subMesh)
428 // * \param subMesh - the submesh where the event occures
430 // void ProcessEvent(const int event, const int eventType, SMESH_subMesh* subMesh,
431 // EventListenerData*, const SMESH_Hypothesis*)
433 // if ( eventType == SMESH_subMesh::ALGO_EVENT) // all algo events
435 // subMesh->ComputeStateEngine( SMESH_subMesh::MODIF_ALGO_STATE );
438 // }; // struct VertexEventListener
440 //=============================================================================
442 * \brief Sets event listener to vertex submeshes
443 * \param subMesh - submesh where algo is set
445 * This method is called when a submesh gets HYP_OK algo_state.
446 * After being set, event listener is notified on each event of a submesh.
448 //=============================================================================
450 void StdMeshers_Regular_1D::SetEventListener(SMESH_subMesh* subMesh)
452 StdMeshers_Propagation::SetPropagationMgr( subMesh );
455 //=============================================================================
458 * \param subMesh - restored submesh
460 * This method is called only if a submesh has HYP_OK algo_state.
462 //=============================================================================
464 void StdMeshers_Regular_1D::SubmeshRestored(SMESH_subMesh* subMesh)
468 //=============================================================================
470 * \brief Return StdMeshers_SegmentLengthAroundVertex assigned to vertex
472 //=============================================================================
474 const StdMeshers_SegmentLengthAroundVertex*
475 StdMeshers_Regular_1D::getVertexHyp(SMESH_Mesh & theMesh,
476 const TopoDS_Vertex & theV)
478 static SMESH_HypoFilter filter( SMESH_HypoFilter::HasName("SegmentAroundVertex_0D"));
479 if ( const SMESH_Hypothesis * h = theMesh.GetHypothesis( theV, filter, true ))
481 SMESH_Algo* algo = const_cast< SMESH_Algo* >( static_cast< const SMESH_Algo* > ( h ));
482 const list <const SMESHDS_Hypothesis *> & hypList = algo->GetUsedHypothesis( theMesh, theV, 0 );
483 if ( !hypList.empty() && string("SegmentLengthAroundVertex") == hypList.front()->GetName() )
484 return static_cast<const StdMeshers_SegmentLengthAroundVertex*>( hypList.front() );
489 //================================================================================
491 * \brief Tune parameters to fit "SegmentLengthAroundVertex" hypothesis
492 * \param theC3d - wire curve
493 * \param theLength - curve length
494 * \param theParameters - internal nodes parameters to modify
495 * \param theVf - 1st vertex
496 * \param theVl - 2nd vertex
498 //================================================================================
500 void StdMeshers_Regular_1D::redistributeNearVertices (SMESH_Mesh & theMesh,
501 Adaptor3d_Curve & theC3d,
503 std::list< double > & theParameters,
504 const TopoDS_Vertex & theVf,
505 const TopoDS_Vertex & theVl)
507 double f = theC3d.FirstParameter(), l = theC3d.LastParameter();
508 int nPar = theParameters.size();
509 for ( int isEnd1 = 0; isEnd1 < 2; ++isEnd1 )
511 const TopoDS_Vertex & V = isEnd1 ? theVf : theVl;
512 const StdMeshers_SegmentLengthAroundVertex* hyp = getVertexHyp (theMesh, V );
514 double vertexLength = hyp->GetLength();
515 if ( vertexLength > theLength / 2.0 )
517 if ( isEnd1 ) { // to have a segment of interest at end of theParameters
518 theParameters.reverse();
521 if ( _hypType == NB_SEGMENTS )
523 compensateError(0, vertexLength, f, l, theLength, theC3d, theParameters, true );
525 else if ( nPar <= 3 )
528 vertexLength = -vertexLength;
529 GCPnts_AbscissaPoint Discret(theC3d, vertexLength, l);
530 if ( Discret.IsDone() ) {
532 theParameters.push_back( Discret.Parameter());
534 double L = GCPnts_AbscissaPoint::Length( theC3d, theParameters.back(), l);
535 if ( vertexLength < L / 2.0 )
536 theParameters.push_back( Discret.Parameter());
538 compensateError(0, vertexLength, f, l, theLength, theC3d, theParameters, true );
544 // recompute params between the last segment and a middle one.
545 // find size of a middle segment
546 int nHalf = ( nPar-1 ) / 2;
547 list< double >::reverse_iterator itU = theParameters.rbegin();
548 std::advance( itU, nHalf );
550 double Lm = GCPnts_AbscissaPoint::Length( theC3d, Um, *itU);
551 double L = GCPnts_AbscissaPoint::Length( theC3d, *itU, l);
552 StdMeshers_Regular_1D algo( *this );
553 algo._hypType = BEG_END_LENGTH;
554 algo._value[ BEG_LENGTH_IND ] = Lm;
555 algo._value[ END_LENGTH_IND ] = vertexLength;
556 double from = *itU, to = l;
558 std::swap( from, to );
559 std::swap( algo._value[ BEG_LENGTH_IND ], algo._value[ END_LENGTH_IND ]);
562 if ( algo.computeInternalParameters( theMesh, theC3d, L, from, to, params, false ))
564 if ( isEnd1 ) params.reverse();
565 while ( 1 + nHalf-- )
566 theParameters.pop_back();
567 theParameters.splice( theParameters.end(), params );
571 compensateError(0, vertexLength, f, l, theLength, theC3d, theParameters, true );
575 theParameters.reverse();
580 //=============================================================================
584 //=============================================================================
585 bool StdMeshers_Regular_1D::computeInternalParameters(SMESH_Mesh & theMesh,
586 Adaptor3d_Curve& theC3d,
590 list<double> & theParams,
591 const bool theReverse,
592 bool theConsiderPropagation)
596 double f = theFirstU, l = theLastU;
605 if ( _hypType == MAX_LENGTH )
607 double nbseg = ceil(theLength / _value[ BEG_LENGTH_IND ]); // integer sup
609 nbseg = 1; // degenerated edge
610 eltSize = theLength / nbseg;
612 else if ( _hypType == LOCAL_LENGTH )
614 // Local Length hypothesis
615 double nbseg = ceil(theLength / _value[ BEG_LENGTH_IND ]); // integer sup
618 bool isFound = false;
619 if (theConsiderPropagation && !_mainEdge.IsNull()) // propagated from some other edge
621 // Advanced processing to assure equal number of segments in case of Propagation
622 SMESH_subMesh* sm = theMesh.GetSubMeshContaining(_mainEdge);
624 bool computed = sm->IsMeshComputed();
626 if (sm->GetComputeState() == SMESH_subMesh::READY_TO_COMPUTE) {
627 sm->ComputeStateEngine(SMESH_subMesh::COMPUTE);
628 computed = sm->IsMeshComputed();
632 SMESHDS_SubMesh* smds = sm->GetSubMeshDS();
633 int nb_segments = smds->NbElements();
634 if (nbseg - 1 <= nb_segments && nb_segments <= nbseg + 1) {
641 if (!isFound) // not found by meshed edge in the propagation chain, use precision
643 double aPrecision = _value[ PRECISION_IND ];
644 double nbseg_prec = ceil((theLength / _value[ BEG_LENGTH_IND ]) - aPrecision);
645 if (nbseg_prec == (nbseg - 1)) nbseg--;
649 nbseg = 1; // degenerated edge
650 eltSize = theLength / nbseg;
654 // Number Of Segments hypothesis
655 int NbSegm = _ivalue[ NB_SEGMENTS_IND ];
656 if ( NbSegm < 1 ) return false;
657 if ( NbSegm == 1 ) return true;
659 switch (_ivalue[ DISTR_TYPE_IND ])
661 case StdMeshers_NumberOfSegments::DT_Scale:
663 double scale = _value[ SCALE_FACTOR_IND ];
665 if (fabs(scale - 1.0) < Precision::Confusion()) {
666 // special case to avoid division by zero
667 for (int i = 1; i < NbSegm; i++) {
668 double param = f + (l - f) * i / NbSegm;
669 theParams.push_back( param );
672 // general case of scale distribution
676 double alpha = pow(scale, 1.0 / (NbSegm - 1));
677 double factor = (l - f) / (1.0 - pow(alpha, NbSegm));
679 for (int i = 1; i < NbSegm; i++) {
680 double param = f + factor * (1.0 - pow(alpha, i));
681 theParams.push_back( param );
687 case StdMeshers_NumberOfSegments::DT_TabFunc:
689 FunctionTable func(_vvalue[ TAB_FUNC_IND ], _ivalue[ CONV_MODE_IND ]);
690 return computeParamByFunc(theC3d, f, l, theLength, theReverse,
691 _ivalue[ NB_SEGMENTS_IND ], func,
695 case StdMeshers_NumberOfSegments::DT_ExprFunc:
697 FunctionExpr func(_svalue[ EXPR_FUNC_IND ].c_str(), _ivalue[ CONV_MODE_IND ]);
698 return computeParamByFunc(theC3d, f, l, theLength, theReverse,
699 _ivalue[ NB_SEGMENTS_IND ], func,
703 case StdMeshers_NumberOfSegments::DT_Regular:
704 eltSize = theLength / _ivalue[ NB_SEGMENTS_IND ];
710 GCPnts_UniformAbscissa Discret(theC3d, eltSize, f, l);
711 if ( !Discret.IsDone() )
712 return error( "GCPnts_UniformAbscissa failed");
714 int NbPoints = Discret.NbPoints();
715 for ( int i = 2; i < NbPoints; i++ )
717 double param = Discret.Parameter(i);
718 theParams.push_back( param );
720 compensateError( eltSize, eltSize, f, l, theLength, theC3d, theParams ); // for PAL9899
724 case BEG_END_LENGTH: {
726 // geometric progression: SUM(n) = ( a1 - an * q ) / ( 1 - q ) = theLength
728 double a1 = _value[ BEG_LENGTH_IND ];
729 double an = _value[ END_LENGTH_IND ];
730 double q = ( theLength - a1 ) / ( theLength - an );
732 double U1 = theReverse ? l : f;
733 double Un = theReverse ? f : l;
735 double eltSize = theReverse ? -a1 : a1;
737 // computes a point on a curve <theC3d> at the distance <eltSize>
738 // from the point of parameter <param>.
739 GCPnts_AbscissaPoint Discret( theC3d, eltSize, param );
740 if ( !Discret.IsDone() ) break;
741 param = Discret.Parameter();
742 if ( f < param && param < l )
743 theParams.push_back( param );
748 compensateError( a1, an, U1, Un, theLength, theC3d, theParams );
749 if (theReverse) theParams.reverse(); // NPAL18025
753 case ARITHMETIC_1D: {
755 // arithmetic progression: SUM(n) = ( an - a1 + q ) * ( a1 + an ) / ( 2 * q ) = theLength
757 double a1 = _value[ BEG_LENGTH_IND ];
758 double an = _value[ END_LENGTH_IND ];
760 double q = ( an - a1 ) / ( 2 *theLength/( a1 + an ) - 1 );
761 int n = int(fabs(q) > numeric_limits<double>::min() ? ( 1+( an-a1 )/q ) : ( 1+theLength/a1 ));
763 double U1 = theReverse ? l : f;
764 double Un = theReverse ? f : l;
771 while ( n-- > 0 && eltSize * ( Un - U1 ) > 0 ) {
772 // computes a point on a curve <theC3d> at the distance <eltSize>
773 // from the point of parameter <param>.
774 GCPnts_AbscissaPoint Discret( theC3d, eltSize, param );
775 if ( !Discret.IsDone() ) break;
776 param = Discret.Parameter();
777 if ( param > f && param < l )
778 theParams.push_back( param );
783 compensateError( a1, an, U1, Un, theLength, theC3d, theParams );
784 if (theReverse) theParams.reverse(); // NPAL18025
789 case FIXED_POINTS_1D: {
790 const std::vector<double>& aPnts = _fpHyp->GetPoints();
791 const std::vector<int>& nbsegs = _fpHyp->GetNbSegments();
793 TColStd_SequenceOfReal Params;
794 for(; i<aPnts.size(); i++) {
795 if( aPnts[i]<0.0001 || aPnts[i]>0.9999 ) continue;
797 bool IsExist = false;
798 for(; j<=Params.Length(); j++) {
799 if( fabs(aPnts[i]-Params.Value(j)) < 1e-4 ) {
803 if( aPnts[i]<Params.Value(j) ) break;
805 if(!IsExist) Params.InsertBefore(j,aPnts[i]);
807 double par2, par1, lp;
816 double eltSize, segmentSize = 0.;
817 double currAbscissa = 0;
818 for(i=0; i<Params.Length(); i++) {
819 int nbseg = ( i > nbsegs.size()-1 ) ? nbsegs[0] : nbsegs[i];
820 segmentSize = Params.Value(i+1)*theLength - currAbscissa;
821 currAbscissa += segmentSize;
822 GCPnts_AbscissaPoint APnt(theC3d, sign*segmentSize, par1);
824 return error( "GCPnts_AbscissaPoint failed");
825 par2 = APnt.Parameter();
826 eltSize = segmentSize/nbseg;
827 GCPnts_UniformAbscissa Discret(theC3d, eltSize, par1, par2);
829 Discret.Initialize(theC3d, eltSize, par2, par1);
831 Discret.Initialize(theC3d, eltSize, par1, par2);
832 if ( !Discret.IsDone() )
833 return error( "GCPnts_UniformAbscissa failed");
834 int NbPoints = Discret.NbPoints();
835 list<double> tmpParams;
836 for(int i=2; i<NbPoints; i++) {
837 double param = Discret.Parameter(i);
838 tmpParams.push_back( param );
841 compensateError( eltSize, eltSize, par2, par1, segmentSize, theC3d, tmpParams );
845 compensateError( eltSize, eltSize, par1, par2, segmentSize, theC3d, tmpParams );
847 list<double>::iterator itP = tmpParams.begin();
848 for(; itP != tmpParams.end(); itP++) {
849 theParams.push_back( *(itP) );
851 theParams.push_back( par2 );
856 int nbseg = ( nbsegs.size() > Params.Length() ) ? nbsegs[Params.Length()] : nbsegs[0];
857 segmentSize = theLength - currAbscissa;
858 eltSize = segmentSize/nbseg;
859 GCPnts_UniformAbscissa Discret;
861 Discret.Initialize(theC3d, eltSize, par1, lp);
863 Discret.Initialize(theC3d, eltSize, lp, par1);
864 if ( !Discret.IsDone() )
865 return error( "GCPnts_UniformAbscissa failed");
866 int NbPoints = Discret.NbPoints();
867 list<double> tmpParams;
868 for(int i=2; i<NbPoints; i++) {
869 double param = Discret.Parameter(i);
870 tmpParams.push_back( param );
873 compensateError( eltSize, eltSize, lp, par1, segmentSize, theC3d, tmpParams );
877 compensateError( eltSize, eltSize, par1, lp, segmentSize, theC3d, tmpParams );
879 list<double>::iterator itP = tmpParams.begin();
880 for(; itP != tmpParams.end(); itP++) {
881 theParams.push_back( *(itP) );
885 theParams.reverse(); // NPAL18025
892 GCPnts_UniformDeflection Discret(theC3d, _value[ DEFLECTION_IND ], f, l, true);
893 if ( !Discret.IsDone() )
896 int NbPoints = Discret.NbPoints();
897 for ( int i = 2; i < NbPoints; i++ )
899 double param = Discret.Parameter(i);
900 theParams.push_back( param );
911 //=============================================================================
915 //=============================================================================
917 bool StdMeshers_Regular_1D::Compute(SMESH_Mesh & theMesh, const TopoDS_Shape & theShape)
919 if ( _hypType == NONE )
922 SMESHDS_Mesh * meshDS = theMesh.GetMeshDS();
924 const TopoDS_Edge & EE = TopoDS::Edge(theShape);
925 TopoDS_Edge E = TopoDS::Edge(EE.Oriented(TopAbs_FORWARD));
926 int shapeID = meshDS->ShapeToIndex( E );
929 Handle(Geom_Curve) Curve = BRep_Tool::Curve(E, f, l);
931 TopoDS_Vertex VFirst, VLast;
932 TopExp::Vertices(E, VFirst, VLast); // Vfirst corresponds to f and Vlast to l
934 ASSERT(!VFirst.IsNull());
935 ASSERT(!VLast.IsNull());
936 const SMDS_MeshNode * idFirst = SMESH_Algo::VertexNode( VFirst, meshDS );
937 const SMDS_MeshNode * idLast = SMESH_Algo::VertexNode( VLast, meshDS );
938 if (!idFirst || !idLast)
939 return error( COMPERR_BAD_INPUT_MESH, "No node on vertex");
943 list< double > params;
944 bool reversed = false;
945 if ( theMesh.GetShapeToMesh().ShapeType() >= TopAbs_WIRE ) {
946 reversed = ( EE.Orientation() == TopAbs_REVERSED );
948 if ( !_mainEdge.IsNull() ) {
949 reversed = ( _mainEdge.Orientation() == TopAbs_REVERSED );
951 else if ( _revEdgesIDs.size() > 0 ) {
952 for ( int i = 0; i < _revEdgesIDs.size(); i++) {
953 if ( _revEdgesIDs[i] == shapeID ) {
954 reversed = !reversed;
959 BRepAdaptor_Curve C3d( E );
960 double length = EdgeLength( E );
961 if ( ! computeInternalParameters( theMesh, C3d, length, f, l, params, reversed, true )) {
964 redistributeNearVertices( theMesh, C3d, length, params, VFirst, VLast );
966 // edge extrema (indexes : 1 & NbPoints) already in SMDS (TopoDS_Vertex)
967 // only internal nodes receive an edge position with param on curve
969 const SMDS_MeshNode * idPrev = idFirst;
983 for (list<double>::iterator itU = params.begin(); itU != params.end(); itU++) {
985 gp_Pnt P = Curve->Value(param);
987 //Add the Node in the DataStructure
988 SMDS_MeshNode * node = meshDS->AddNode(P.X(), P.Y(), P.Z());
989 meshDS->SetNodeOnEdge(node, shapeID, param);
992 // create medium node
993 double prm = ( parPrev + param )/2;
994 gp_Pnt PM = Curve->Value(prm);
995 SMDS_MeshNode * NM = meshDS->AddNode(PM.X(), PM.Y(), PM.Z());
996 meshDS->SetNodeOnEdge(NM, shapeID, prm);
997 SMDS_MeshEdge * edge = meshDS->AddEdge(idPrev, node, NM);
998 meshDS->SetMeshElementOnShape(edge, shapeID);
1001 SMDS_MeshEdge * edge = meshDS->AddEdge(idPrev, node);
1002 meshDS->SetMeshElementOnShape(edge, shapeID);
1008 if(_quadraticMesh) {
1009 double prm = ( parPrev + parLast )/2;
1010 gp_Pnt PM = Curve->Value(prm);
1011 SMDS_MeshNode * NM = meshDS->AddNode(PM.X(), PM.Y(), PM.Z());
1012 meshDS->SetNodeOnEdge(NM, shapeID, prm);
1013 SMDS_MeshEdge * edge = meshDS->AddEdge(idPrev, idLast, NM);
1014 meshDS->SetMeshElementOnShape(edge, shapeID);
1017 SMDS_MeshEdge* edge = meshDS->AddEdge(idPrev, idLast);
1018 meshDS->SetMeshElementOnShape(edge, shapeID);
1023 //MESSAGE("************* Degenerated edge! *****************");
1025 // Edge is a degenerated Edge : We put n = 5 points on the edge.
1026 const int NbPoints = 5;
1027 BRep_Tool::Range( E, f, l ); // PAL15185
1028 double du = (l - f) / (NbPoints - 1);
1030 gp_Pnt P = BRep_Tool::Pnt(VFirst);
1032 const SMDS_MeshNode * idPrev = idFirst;
1033 for (int i = 2; i < NbPoints; i++) {
1034 double param = f + (i - 1) * du;
1035 SMDS_MeshNode * node = meshDS->AddNode(P.X(), P.Y(), P.Z());
1036 if(_quadraticMesh) {
1037 // create medium node
1038 double prm = param - du/2.;
1039 SMDS_MeshNode * NM = meshDS->AddNode(P.X(), P.Y(), P.Z());
1040 meshDS->SetNodeOnEdge(NM, shapeID, prm);
1041 SMDS_MeshEdge * edge = meshDS->AddEdge(idPrev, node, NM);
1042 meshDS->SetMeshElementOnShape(edge, shapeID);
1045 SMDS_MeshEdge * edge = meshDS->AddEdge(idPrev, node);
1046 meshDS->SetMeshElementOnShape(edge, shapeID);
1048 meshDS->SetNodeOnEdge(node, shapeID, param);
1051 if(_quadraticMesh) {
1052 // create medium node
1053 double prm = l - du/2.;
1054 SMDS_MeshNode * NM = meshDS->AddNode(P.X(), P.Y(), P.Z());
1055 meshDS->SetNodeOnEdge(NM, shapeID, prm);
1056 SMDS_MeshEdge * edge = meshDS->AddEdge(idPrev, idLast, NM);
1057 meshDS->SetMeshElementOnShape(edge, shapeID);
1060 SMDS_MeshEdge * edge = meshDS->AddEdge(idPrev, idLast);
1061 meshDS->SetMeshElementOnShape(edge, shapeID);
1068 //=============================================================================
1072 //=============================================================================
1074 bool StdMeshers_Regular_1D::Evaluate(SMESH_Mesh & theMesh,
1075 const TopoDS_Shape & theShape,
1076 MapShapeNbElems& aResMap)
1078 if ( _hypType == NONE )
1081 //SMESHDS_Mesh * meshDS = theMesh.GetMeshDS();
1083 const TopoDS_Edge & EE = TopoDS::Edge(theShape);
1084 TopoDS_Edge E = TopoDS::Edge(EE.Oriented(TopAbs_FORWARD));
1085 // int shapeID = meshDS->ShapeToIndex( E );
1088 Handle(Geom_Curve) Curve = BRep_Tool::Curve(E, f, l);
1090 TopoDS_Vertex VFirst, VLast;
1091 TopExp::Vertices(E, VFirst, VLast); // Vfirst corresponds to f and Vlast to l
1093 ASSERT(!VFirst.IsNull());
1094 ASSERT(!VLast.IsNull());
1096 std::vector<int> aVec(SMDSEntity_Last,0);
1098 if (!Curve.IsNull()) {
1099 list< double > params;
1101 BRepAdaptor_Curve C3d( E );
1102 double length = EdgeLength( E );
1103 if ( ! computeInternalParameters( theMesh, C3d, length, f, l, params, false, true )) {
1104 SMESH_subMesh * sm = theMesh.GetSubMesh(theShape);
1105 aResMap.insert(std::make_pair(sm,aVec));
1106 SMESH_ComputeErrorPtr& smError = sm->GetComputeError();
1107 smError.reset( new SMESH_ComputeError(COMPERR_ALGO_FAILED,"Submesh can not be evaluated",this));
1110 redistributeNearVertices( theMesh, C3d, length, params, VFirst, VLast );
1112 if(_quadraticMesh) {
1113 aVec[SMDSEntity_Node] = 2*params.size() + 1;
1114 aVec[SMDSEntity_Quad_Edge] = params.size() + 1;
1117 aVec[SMDSEntity_Node] = params.size();
1118 aVec[SMDSEntity_Edge] = params.size() + 1;
1123 //MESSAGE("************* Degenerated edge! *****************");
1124 // Edge is a degenerated Edge : We put n = 5 points on the edge.
1125 if(_quadraticMesh) {
1126 aVec[SMDSEntity_Node] = 11;
1127 aVec[SMDSEntity_Quad_Edge] = 6;
1130 aVec[SMDSEntity_Node] = 5;
1131 aVec[SMDSEntity_Edge] = 6;
1135 SMESH_subMesh * sm = theMesh.GetSubMesh(theShape);
1136 aResMap.insert(std::make_pair(sm,aVec));
1142 //=============================================================================
1144 * See comments in SMESH_Algo.cxx
1146 //=============================================================================
1148 const list <const SMESHDS_Hypothesis *> &
1149 StdMeshers_Regular_1D::GetUsedHypothesis(SMESH_Mesh & aMesh,
1150 const TopoDS_Shape & aShape,
1151 const bool ignoreAuxiliary)
1153 _usedHypList.clear();
1154 _mainEdge.Nullify();
1156 SMESH_HypoFilter auxiliaryFilter, compatibleFilter;
1157 auxiliaryFilter.Init( SMESH_HypoFilter::IsAuxiliary() );
1158 const bool ignoreAux = true;
1159 InitCompatibleHypoFilter( compatibleFilter, ignoreAux );
1161 // get non-auxiliary assigned to aShape
1162 int nbHyp = aMesh.GetHypotheses( aShape, compatibleFilter, _usedHypList, false );
1164 if (nbHyp == 0 && aShape.ShapeType() == TopAbs_EDGE)
1166 // Check, if propagated from some other edge
1167 _mainEdge = StdMeshers_Propagation::GetPropagationSource( aMesh, aShape );
1168 if ( !_mainEdge.IsNull() )
1170 // Propagation of 1D hypothesis from <aMainEdge> on this edge;
1171 // get non-auxiliary assigned to _mainEdge
1172 nbHyp = aMesh.GetHypotheses( _mainEdge, compatibleFilter, _usedHypList, true );
1176 if (nbHyp == 0) // nothing propagated nor assigned to aShape
1178 SMESH_Algo::GetUsedHypothesis( aMesh, aShape, ignoreAuxiliary );
1179 nbHyp = _usedHypList.size();
1183 // get auxiliary hyps from aShape
1184 aMesh.GetHypotheses( aShape, auxiliaryFilter, _usedHypList, true );
1186 if ( nbHyp > 1 && ignoreAuxiliary )
1187 _usedHypList.clear(); //only one compatible non-auxiliary hypothesis allowed
1189 return _usedHypList;