1 // Copyright (C) 2014-2015 EDF-R&D
2 // This library is free software; you can redistribute it and/or
3 // modify it under the terms of the GNU Lesser General Public
4 // License as published by the Free Software Foundation; either
5 // version 2.1 of the License, or (at your option) any later version.
7 // This library is distributed in the hope that it will be useful,
8 // but WITHOUT ANY WARRANTY; without even the implied warranty of
9 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
10 // Lesser General Public License for more details.
12 // You should have received a copy of the GNU Lesser General Public
13 // License along with this library; if not, write to the Free Software
14 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
16 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
19 #include "HYDROData_Profile.h"
21 #include "HYDROData_Document.h"
22 #include "HYDROData_Iterator.h"
23 #include "HYDROData_Tool.h"
24 #include "HYDROData_PolylineXY.h"
26 #include <boost/math/special_functions/fpclassify.hpp>
28 #include <BRepBuilderAPI_MakeEdge.hxx>
29 #include <BRepBuilderAPI_MakeWire.hxx>
30 #include <BRepBuilderAPI_MakePolygon.hxx>
32 #include <BRepExtrema_ExtCC.hxx>
34 #include <BRep_Tool.hxx>
39 #include <gp_Pnt2d.hxx>
41 #include <TDataStd_AsciiString.hxx>
42 #include <TDataStd_RealArray.hxx>
45 #include <TopoDS_Edge.hxx>
46 #include <TopoDS_Wire.hxx>
47 #include <TopoDS_Iterator.hxx>
49 #include <OSD_File.hxx>
50 #include <OSD_Protection.hxx>
53 #include <QStringList>
55 IMPLEMENT_STANDARD_HANDLE(HYDROData_Profile, HYDROData_Object)
56 IMPLEMENT_STANDARD_RTTIEXT(HYDROData_Profile, HYDROData_Object)
58 HYDROData_Profile::HYDROData_Profile()
59 : HYDROData_Object( Geom_3d )
63 HYDROData_Profile::~HYDROData_Profile()
67 QStringList HYDROData_Profile::DumpToPython( const QString& thePyScriptPath,
68 MapOfTreatedObjects& theTreatedObjects ) const
70 QStringList aResList = dumpObjectCreation( theTreatedObjects );
71 QString aProfileName = GetObjPyName();
73 //TCollection_AsciiString aFilePath = GetFilePath();
74 //if ( !aFilePath.IsEmpty() )
76 // aResList << QString( "%1.ImportFromFile( \"%2\" );" )
77 // .arg( aName ).arg( aFilePath.ToCString() );
80 bool anIsValidProfile = IsValid();
82 QStringList aPntsDefinition;
83 QString aPntsListName = HYDROData_Tool::GenerateNameForPython( theTreatedObjects, "profile_points" );
85 QString aGap = QString().fill( ' ', aPntsListName.length() + 5 );
86 if ( anIsValidProfile )
88 HYDROData_Profile::ProfilePoints aPointsList = GetProfilePoints( true );
89 for ( int k = 1, aNbPoints = aPointsList.Size(); k <= aNbPoints; ++k )
91 const ProfilePoint& aPoint = aPointsList.Value( k );
92 aPntsDefinition << QString( aGap + "gp_XYZ( %1, %2, %3 )%4" )
93 .arg( aPoint.X() ).arg( aPoint.Y() ).arg( aPoint.Z() )
94 .arg( ( k < aNbPoints ? "," : "" ) );
99 HYDROData_IPolyline::PointsList aPointsList = GetParametricPoints();
100 for ( int k = 1, aNbPoints = aPointsList.Size(); k <= aNbPoints; ++k )
102 const HYDROData_IPolyline::Point& aPoint = aPointsList.Value( k );
103 aPntsDefinition << QString( aGap + "gp_XY( %1, %2 )%3" )
104 .arg( aPoint.X() ).arg( aPoint.Y() )
105 .arg( ( k < aNbPoints ? "," : "" ) );
109 if ( !aPntsDefinition.isEmpty() )
111 QString& aFirstStr = aPntsDefinition.first();
112 aFirstStr = aFirstStr.trimmed();
113 aFirstStr.prepend( QString( "%1 = [ " ).arg( aPntsListName ) );
115 aPntsDefinition.last().append( " ];" );
117 aResList << aPntsDefinition;
119 aResList << QString( "%1.%3( %2 );" )
120 .arg( aProfileName ).arg( aPntsListName )
121 .arg( anIsValidProfile ? "SetProfilePoints" : "SetParametricPoints" );
123 aResList << QString( "" );
126 // Set a polyline type if it is not default
127 Handle(HYDROData_ProfileUZ) aPrf = GetProfileUZ( false );
128 if ( !aPrf.IsNull() )
130 HYDROData_IPolyline::SectionType aSecType = aPrf->GetSectionType( 0 );
131 if ( aSecType != HYDROData_IPolyline::SECTION_POLYLINE )
133 aResList << QString( "%1.GetProfileUZ().SetSectionType( 0, %2 );" )
134 .arg( aProfileName ).arg( "HYDROData_IPolyline.SECTION_SPLINE" );
135 aResList << QString( "" );
139 aResList << QString( "%1.Update();" ).arg( aProfileName );
140 aResList << QString( "" );
145 TopoDS_Shape HYDROData_Profile::GetTopShape() const
149 gp_XY aFirstPoint, aLastPoint;
150 if ( !GetLeftPoint( aFirstPoint, false ) || !GetRightPoint( aLastPoint, false ) )
153 gp_Pnt aPnt1( aFirstPoint.X(), aFirstPoint.Y(), 0 );
154 gp_Pnt aPnt2( aLastPoint.X(), aLastPoint.Y(), 0 );
156 BRepBuilderAPI_MakeEdge aMakeEdge( aPnt1, aPnt2 );
157 TopoDS_Edge anEdge = aMakeEdge;
159 BRepBuilderAPI_MakeWire aMakeWire( anEdge );
165 TopoDS_Shape HYDROData_Profile::GetShape3D() const
167 TopoDS_Shape aShape = HYDROData_Object::GetShape3D();
168 if( aShape.IsNull() )
169 aShape = CreateProfileWire( true );
173 TopoDS_Shape HYDROData_Profile::CreateProfileWire( bool canUseDefaultPoints ) const
176 Handle(HYDROData_ProfileUZ) aProfile = GetProfileUZ( false );
177 if ( !aProfile.IsNull() )
179 ProfilePoints aProfilePoints = GetProfilePoints( false, canUseDefaultPoints );
180 HYDROData_IPolyline::SectionType aSectionType = aProfile->GetSectionType( 0 );
182 aWire = HYDROData_PolylineXY::BuildWire( aSectionType, false, aProfilePoints );
187 void HYDROData_Profile::Update()
189 HYDROData_Object::Update();
191 TopoDS_Shape aShape = CreateProfileWire( true );
192 SetShape3D( aShape );
195 QColor HYDROData_Profile::DefaultFillingColor() const
197 return QColor( Qt::transparent );
200 QColor HYDROData_Profile::DefaultBorderColor() const
202 return QColor( Qt::black );
205 bool HYDROData_Profile::IsValid() const
207 gp_XY aFirstPoint, aLastPoint;
208 if ( !GetLeftPoint( aFirstPoint, false ) || !GetRightPoint( aLastPoint, false ) )
211 int aNbPoints = NbPoints();
212 return aNbPoints > 1;
215 void HYDROData_Profile::SetLeftPoint( const gp_XY& theGPoint, bool IsConvertFromGlobal )
217 TDF_Label aLabel = myLab.FindChild( DataTag_FirstPoint );
218 if ( aLabel.IsNull() )
221 Handle(HYDROData_Document) aDoc = HYDROData_Document::Document( Label() );
222 gp_XY aLPoint = theGPoint;
223 if( IsConvertFromGlobal )
224 aDoc->Transform( aLPoint, true );
226 Handle(TDataStd_RealArray) anArray;
227 if ( !aLabel.FindAttribute( TDataStd_RealArray::GetID(), anArray ) )
228 anArray = TDataStd_RealArray::Set( aLabel, 0, 1 );
230 anArray->SetValue( 0, aLPoint.X() );
231 anArray->SetValue( 1, aLPoint.Y() );
236 bool HYDROData_Profile::GetLeftPoint( gp_XY& thePoint, bool IsConvertToGlobal,
237 bool CanUseDefault ) const
239 HYDROData_ProfileUZ::PointsList aParametricPoints = GetParametricPoints();
240 if ( aParametricPoints.Length() < 2 )
243 thePoint = GetParametricPoints().First();
245 //thePoint.SetX( 0 );
246 thePoint.SetY( 0 ); //default left point of not-georeferenced profile
247 TDF_Label aLabel = myLab.FindChild( DataTag_FirstPoint, false );
248 if ( aLabel.IsNull() )
250 return CanUseDefault;
253 Handle(HYDROData_Document) aDoc = HYDROData_Document::Document( myLab );
254 Handle(TDataStd_RealArray) anArray;
255 if ( !aLabel.FindAttribute( TDataStd_RealArray::GetID(), anArray ) )
257 return CanUseDefault;
260 thePoint.SetX( anArray->Value( 0 ) );
261 thePoint.SetY( anArray->Value( 1 ) );
263 if( IsConvertToGlobal )
264 aDoc->Transform( thePoint, false );
269 void HYDROData_Profile::SetRightPoint( const gp_XY& theGPoint, bool IsConvertFromGlobal )
271 TDF_Label aLabel = myLab.FindChild( DataTag_LastPoint );
273 Handle(HYDROData_Document) aDoc = HYDROData_Document::Document( Label() );
274 gp_XY aLPoint = theGPoint;
275 if( IsConvertFromGlobal )
276 aDoc->Transform( aLPoint, true );
278 Handle(TDataStd_RealArray) anArray;
279 if ( !aLabel.FindAttribute( TDataStd_RealArray::GetID(), anArray ) )
280 anArray = TDataStd_RealArray::Set( aLabel, 0, 1 );
282 anArray->SetValue( 0, aLPoint.X() );
283 anArray->SetValue( 1, aLPoint.Y() );
288 bool HYDROData_Profile::GetRightPoint( gp_XY& thePoint, bool IsConvertToGlobal,
289 bool CanUseDefault ) const
291 HYDROData_ProfileUZ::PointsList aParametricPoints = GetParametricPoints();
292 if ( aParametricPoints.Length() < 2 )
295 thePoint = GetParametricPoints().Last();
298 TDF_Label aLabel = myLab.FindChild( DataTag_LastPoint, false );
299 if ( aLabel.IsNull() )
301 return CanUseDefault;
304 Handle(HYDROData_Document) aDoc = HYDROData_Document::Document( myLab );
305 Handle(TDataStd_RealArray) anArray;
306 if ( !aLabel.FindAttribute( TDataStd_RealArray::GetID(), anArray ) )
308 return CanUseDefault;
311 thePoint.SetX( anArray->Value( 0 ) );
312 thePoint.SetY( anArray->Value( 1 ) );
314 if( IsConvertToGlobal )
315 aDoc->Transform( thePoint, false );
320 void HYDROData_Profile::Invalidate()
322 TDF_Label aFirstLabel = myLab.FindChild( DataTag_FirstPoint, false );
323 if ( !aFirstLabel.IsNull() )
324 aFirstLabel.ForgetAllAttributes();
326 TDF_Label aLastLabel = myLab.FindChild( DataTag_LastPoint, false );
327 if ( !aLastLabel.IsNull() )
328 aLastLabel.ForgetAllAttributes();
333 Handle(HYDROData_ProfileUZ) HYDROData_Profile::GetProfileUZ( const bool theIsCreate ) const
335 Handle(HYDROData_ProfileUZ) aProfileUZ;
337 TDF_Label aLabel = myLab.FindChild( DataTag_ChildProfileUZ, theIsCreate );
338 if ( aLabel.IsNull() )
341 aProfileUZ = Handle(HYDROData_ProfileUZ)::DownCast( HYDROData_Iterator::Object( aLabel ) );
342 if ( aProfileUZ.IsNull() && theIsCreate )
344 aProfileUZ = Handle(HYDROData_ProfileUZ)::DownCast(
345 HYDROData_Iterator::CreateObject( aLabel, KIND_PROFILEUZ ) );
351 int HYDROData_Profile::NbPoints() const
353 Handle(HYDROData_ProfileUZ) aProfileUZ = GetProfileUZ( false );
354 return aProfileUZ.IsNull() ? 0 : aProfileUZ->NbPoints();
357 void HYDROData_Profile::RemovePoints()
359 Handle(HYDROData_ProfileUZ) aProfileUZ = GetProfileUZ( false );
360 if ( !aProfileUZ.IsNull() )
362 aProfileUZ->RemoveSections();
367 void HYDROData_Profile::SetParametricPoints( const HYDROData_ProfileUZ::PointsList& thePoints )
371 Handle(HYDROData_ProfileUZ) aProfileUZ = GetProfileUZ();
372 for ( int i = 1, n = thePoints.Length(); i <= n ; ++i )
374 const HYDROData_ProfileUZ::Point& aPoint = thePoints.Value( i );
375 aProfileUZ->AddPoint( 0, aPoint );
381 HYDROData_ProfileUZ::PointsList HYDROData_Profile::GetParametricPoints() const
383 Handle(HYDROData_ProfileUZ) aProfileUZ = GetProfileUZ( false );
384 return aProfileUZ.IsNull() ? HYDROData_ProfileUZ::PointsList() : aProfileUZ->GetPoints();
387 void HYDROData_Profile::SetProfilePoints( const ProfilePoints& thePoints, bool IsConvertFromGlobal )
390 if ( thePoints.Length() < 2 )
393 gp_XY aFirstPoint, aLastPoint;
395 Handle(HYDROData_Document) aDoc = HYDROData_Document::Document( Label() );
396 Handle(HYDROData_ProfileUZ) aProfileUZ = GetProfileUZ();
397 for ( int i = 1, n = thePoints.Length(); i <= n ; ++i )
399 ProfilePoint aPoint = thePoints.Value( i );
400 if( IsConvertFromGlobal )
401 aDoc->Transform( aPoint, true );
403 gp_XY aPointXY( aPoint.X(), aPoint.Y() );
406 aFirstPoint = aPointXY;
408 aLastPoint = aPointXY;
410 double aDistance = gp_Pnt2d( aFirstPoint ).Distance( aPointXY );
412 HYDROData_ProfileUZ::Point aParPoint( aDistance, aPoint.Z() );
413 aProfileUZ->AddPoint( 0, aParPoint );
416 SetLeftPoint( aFirstPoint, false );//already converted to local CS
417 SetRightPoint( aLastPoint, false );
420 HYDROData_Profile::ProfilePoints HYDROData_Profile::GetProfilePoints
421 ( bool IsConvertToGlobal, bool CanUseDefaultLeftRight ) const
423 ProfilePoints aResPoints;
425 gp_XY aFirstPoint, aLastPoint;
426 if ( !GetLeftPoint( aFirstPoint, IsConvertToGlobal, CanUseDefaultLeftRight ) ||
427 !GetRightPoint( aLastPoint, IsConvertToGlobal, CanUseDefaultLeftRight ) )
430 HYDROData_ProfileUZ::PointsList aParametricPoints = GetParametricPoints();
431 if ( aParametricPoints.Length() < 2 )
434 const HYDROData_ProfileUZ::Point& aFirstParPoint = aParametricPoints.First();
435 const HYDROData_ProfileUZ::Point& aLastParPoint = aParametricPoints.Last();
437 double aFullLength = aLastPoint.X() - aFirstPoint.X();
438 double aParFullLength = aLastParPoint.X() - aFirstParPoint.X();
440 // Add first point as is
441 aResPoints.Append( ProfilePoint( aFirstPoint.X(), aFirstPoint.Y(), aFirstParPoint.Y() ) );
443 // Compute all other points
444 for ( int i = 2, n = aParametricPoints.Length(); i < n ; ++i )
446 const HYDROData_ProfileUZ::Point& aParPoint = aParametricPoints.Value( i );
448 double aParPointDist = aParPoint.X() - aFirstParPoint.X();
449 double aRatio = aParPointDist / aParFullLength;
451 double aParX = aFirstPoint.X() * (1-aRatio) + aLastPoint.X() * aRatio;
452 double aParY = aFirstPoint.Y() * (1-aRatio) + aLastPoint.Y() * aRatio;
454 ProfilePoint aCompPoint( aParX, aParY, aParPoint.Y() );
455 aResPoints.Append( aCompPoint );
458 // Add last point as is
459 aResPoints.Append( ProfilePoint( aLastPoint.X(), aLastPoint.Y(), aLastParPoint.Y() ) );
464 void HYDROData_Profile::SetFilePath( const TCollection_AsciiString& theFilePath )
466 TDataStd_AsciiString::Set( myLab.FindChild( DataTag_FilePath ), theFilePath );
469 TCollection_AsciiString HYDROData_Profile::GetFilePath() const
471 TCollection_AsciiString aRes;
473 Handle(TDataStd_AsciiString) anAsciiStr;
474 if ( myLab.FindChild( DataTag_FilePath ).FindAttribute( TDataStd_AsciiString::GetID(), anAsciiStr ) )
475 aRes = anAsciiStr->Get();
480 int HYDROData_Profile::ImportFromFile( const Handle(HYDROData_Document)& theDoc,
481 const TCollection_AsciiString& theFileName,
482 NCollection_Sequence<int>& theBadProfilesIds )
484 if ( theDoc.IsNull() || theFileName.IsEmpty() )
487 OSD_File aFile( theFileName );
488 if ( !aFile.IsReadable() )
491 aFile.Open( OSD_ReadOnly, OSD_Protection() );
492 if ( !aFile.IsOpen() )
495 NCollection_Sequence<Handle(HYDROData_Profile)> aCreatedProfiles;
498 Handle(HYDROData_Profile) aNewProfile;
499 for ( ; !aFile.IsAtEnd(); ++aProfileId )
501 if ( aNewProfile.IsNull() )
502 aNewProfile = Handle(HYDROData_Profile)::DownCast( theDoc->CreateObject( KIND_PROFILE ) );
504 bool anIsRead = false;
505 if ( aNewProfile->ImportFromFile( aFile, &anIsRead ) )
507 aCreatedProfiles.Append( aNewProfile );
508 aNewProfile.Nullify();
512 theBadProfilesIds.Append( aProfileId );
516 if ( !aNewProfile.IsNull() )
517 aNewProfile->Remove();
522 for ( int i = 1, n = aCreatedProfiles.Length(); i <= n ; ++i )
524 Handle(HYDROData_Profile) aProfile = aCreatedProfiles.Value( i );
526 QString aProfileName = HYDROData_Tool::GenerateObjectName( theDoc, "Profile" );
527 aProfile->SetName( aProfileName );
529 aProfile->SetFilePath( theFileName );
531 aProfile->SetBorderColor( aProfile->DefaultBorderColor() );
534 return aCreatedProfiles.Length();
537 bool HYDROData_Profile::ImportFromFile( const TCollection_AsciiString& theFileName,
543 // Try to open the file
544 OSD_File aFile( theFileName );
545 if ( !aFile.IsReadable() )
548 aFile.Open( OSD_ReadOnly, OSD_Protection() );
549 if ( !aFile.IsOpen() )
552 bool aRes = ImportFromFile( aFile, theIsRead );
560 SetFilePath( theFileName );
566 bool HYDROData_Profile::ImportFromFile( OSD_File& theFile,
572 if ( !theFile.IsOpen() )
577 bool anIsParametric = false;
578 bool anIsGeoref = false;
580 HYDROData_ProfileUZ::PointsList aPointsUZ;
581 ProfilePoints aPointsXYZ;
583 double aPrevVal = -DBL_MAX;
584 while ( !theFile.IsAtEnd() )
586 Standard_Integer aNbRead = 0;
587 TCollection_AsciiString aLine;
588 theFile.ReadLine( aLine, 1024, aNbRead );
590 aLine.LeftAdjust(); aLine.RightAdjust();
591 if ( aLine.IsEmpty() )
593 if ( !anIsParametric && !anIsGeoref )
594 continue; // Definition is not started yet
596 break; // Next profile started
599 // Set flag of read status to true
603 TCollection_AsciiString aValX = aLine.Token( " \t", 1 );
604 TCollection_AsciiString aValY = aLine.Token( " \t", 2 );
605 TCollection_AsciiString aValZ = aLine.Token( " \t", 3 );
607 if ( aValX.IsEmpty() || !aValX.IsRealValue() ||
608 aValY.IsEmpty() || !aValY.IsRealValue() )
614 if ( !anIsParametric && !anIsGeoref )
616 anIsParametric = aValZ.IsEmpty();
617 anIsGeoref = !aValZ.IsEmpty();
620 double aCoordX = aValX.RealValue();
621 double aCoordY = aValY.RealValue();
623 if ( boost::math::isnan( aCoordX ) || boost::math::isinf( aCoordX ) ||
624 boost::math::isnan( aCoordY ) || boost::math::isinf( aCoordY ) )
627 if ( anIsParametric )
629 if ( aCoordX < aPrevVal )
631 // Move back readed line
632 theFile.Seek( -( aNbRead + 1 ), OSD_FromHere );
636 HYDROData_ProfileUZ::Point aPoint( aCoordX, aCoordY );
637 aPointsUZ.Append( aPoint );
643 if ( aValZ.IsEmpty() || !aValZ.IsRealValue() )
649 double aCoordZ = aValZ.RealValue();
650 if ( boost::math::isnan( aCoordZ ) || boost::math::isinf( aCoordZ ) )
653 ProfilePoint aPoint( aCoordX, aCoordY, aCoordZ );
654 aPointsXYZ.Append( aPoint );
658 aRes = aRes && ( anIsParametric && !aPointsUZ.IsEmpty() ||
659 anIsGeoref && !aPointsXYZ.IsEmpty() );
662 // Update profile points
663 if ( anIsParametric )
665 SetParametricPoints( aPointsUZ );
667 else if ( anIsGeoref )
669 SetProfilePoints( aPointsXYZ, true );
678 void HYDROData_Profile::UpdateLocalCS( double theDx, double theDy )
680 gp_XY aDelta( theDx, theDy );
683 GetLeftPoint( aPnt, false );
685 SetLeftPoint( aPnt, false );
687 GetRightPoint( aPnt, false );
689 SetRightPoint( aPnt, false );
692 HYDROData_Profile::ProfilePoint HYDROData_Profile::GetBottomPoint() const
694 ProfilePoint aBottom;
696 // Get parametric points
697 HYDROData_ProfileUZ::PointsList aParametricPoints = GetParametricPoints();
698 if ( aParametricPoints.Length() < 1 ) {
702 // Calculate midvalue for U parameter
703 Standard_Real anUMidValue = aParametricPoints.First().X();
704 Standard_Real anUMinValue = anUMidValue;
705 Standard_Real anUMaxValue = anUMidValue;
707 for ( int i = 2, aNbPoints = aParametricPoints.Size(); i <= aNbPoints; i++ ) {
708 const HYDROData_IPolyline::Point& aParPoint = aParametricPoints.Value( i );
709 Standard_Real anU = aParPoint.X();
711 if ( anU < anUMinValue ) {
713 } else if ( anU > anUMaxValue ) {
718 anUMidValue = ( anUMinValue + anUMaxValue ) / 2;
720 // Find index of the parametric point with minimal Z value
721 int aBottomIndex = 1;
722 HYDROData_IPolyline::Point aParBottom = aParametricPoints.First();
724 for ( int i = 2, aNbPoints = aParametricPoints.Size(); i <= aNbPoints; i++ ) {
725 const HYDROData_IPolyline::Point& aParPoint = aParametricPoints.Value( i );
726 if ( aParPoint.Y() < aParBottom.Y() ) {
728 aParBottom = aParPoint;
729 } else if ( aParPoint.Y() == aParBottom.Y() ) {
730 // Check which point is neares to the U = 0.5
731 if ( fabs( aParPoint.X() - anUMidValue ) < fabs( aParBottom.X() - anUMidValue ) ) {
733 aParBottom = aParPoint;
738 // Find the corresponding profile point
739 ProfilePoints aProfilePoints = GetProfilePoints( false );
740 if ( aBottomIndex >= 1 && aBottomIndex <= aProfilePoints.Length() ) {
741 aBottom = aProfilePoints.Value( aBottomIndex );
747 HYDROData_Profile::ProfilePoint HYDROData_Profile::GetMiddlePoint( bool CanUseDefault ) const
749 ProfilePoint aMiddlePoint;
751 gp_XY aLeftPnt, aRightPnt;
752 if ( GetLeftPoint( aLeftPnt, true, CanUseDefault ) && GetRightPoint( aRightPnt, true, CanUseDefault ) ) {
753 gp_XYZ aPnt1( aLeftPnt.X(), aLeftPnt.Y(), 0. );
754 gp_XYZ aPnt2( aRightPnt.X(), aRightPnt.Y(), 0. );
755 gp_Pnt aMiddlePoint2d( 0.5 * ( aPnt1 + aPnt2 ) );
757 gp_Lin aMidLin( aMiddlePoint2d, gp::DZ() );
758 TopoDS_Edge aMidEdge = BRepLib_MakeEdge( aMidLin );
760 TopoDS_Iterator anIt( TopoDS::Wire( GetShape3D() ) );
761 for ( ; anIt.More(); anIt.Next()) {
762 const TopoDS_Edge& anEdge = TopoDS::Edge( anIt.Value() );
765 Standard_Real aStart, anEnd;
766 Handle(Geom_Curve) aCurve = BRep_Tool::Curve( anEdge, aStart, anEnd );
767 gp_Pnt aMiddlePointOnCurve = aCurve->Value( ( aStart + anEnd ) / 2 );
770 BRepExtrema_ExtCC ExtremaEE( aMidEdge, anEdge);
771 if (ExtremaEE.IsDone() && ExtremaEE.NbExt() != 0) {
772 for ( Standard_Integer i = 1; i <= ExtremaEE.NbExt(); i++ ) {
773 if ( ExtremaEE.SquareDistance(i) <= Precision::Confusion() ) {
774 aMiddlePoint = ExtremaEE.PointOnE1(i).XYZ();