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( MapOfTreatedObjects& theTreatedObjects ) const
69 QStringList aResList = dumpObjectCreation( theTreatedObjects );
70 QString aProfileName = GetObjPyName();
72 //TCollection_AsciiString aFilePath = GetFilePath();
73 //if ( !aFilePath.IsEmpty() )
75 // aResList << QString( "%1.ImportFromFile( \"%2\" );" )
76 // .arg( aName ).arg( aFilePath.ToCString() );
79 bool anIsValidProfile = IsValid();
81 QStringList aPntsDefinition;
82 QString aPntsListName = HYDROData_Tool::GenerateNameForPython( theTreatedObjects, "profile_points" );
84 QString aGap = QString().fill( ' ', aPntsListName.length() + 5 );
85 if ( anIsValidProfile )
87 HYDROData_Profile::ProfilePoints aPointsList = GetProfilePoints( true );
88 for ( int k = 1, aNbPoints = aPointsList.Size(); k <= aNbPoints; ++k )
90 const ProfilePoint& aPoint = aPointsList.Value( k );
91 aPntsDefinition << QString( aGap + "gp_XYZ( %1, %2, %3 )%4" )
92 .arg( aPoint.X() ).arg( aPoint.Y() ).arg( aPoint.Z() )
93 .arg( ( k < aNbPoints ? "," : "" ) );
98 HYDROData_IPolyline::PointsList aPointsList = GetParametricPoints();
99 for ( int k = 1, aNbPoints = aPointsList.Size(); k <= aNbPoints; ++k )
101 const HYDROData_IPolyline::Point& aPoint = aPointsList.Value( k );
102 aPntsDefinition << QString( aGap + "gp_XY( %1, %2 )%3" )
103 .arg( aPoint.X() ).arg( aPoint.Y() )
104 .arg( ( k < aNbPoints ? "," : "" ) );
108 if ( !aPntsDefinition.isEmpty() )
110 QString& aFirstStr = aPntsDefinition.first();
111 aFirstStr = aFirstStr.trimmed();
112 aFirstStr.prepend( QString( "%1 = [ " ).arg( aPntsListName ) );
114 aPntsDefinition.last().append( " ];" );
116 aResList << aPntsDefinition;
118 aResList << QString( "%1.%3( %2 );" )
119 .arg( aProfileName ).arg( aPntsListName )
120 .arg( anIsValidProfile ? "SetProfilePoints" : "SetParametricPoints" );
122 aResList << QString( "" );
125 // Set a polyline type if it is not default
126 Handle(HYDROData_ProfileUZ) aPrf = GetProfileUZ( false );
127 if ( !aPrf.IsNull() )
129 HYDROData_IPolyline::SectionType aSecType = aPrf->GetSectionType( 0 );
130 if ( aSecType != HYDROData_IPolyline::SECTION_POLYLINE )
132 aResList << QString( "%1.GetProfileUZ().SetSectionType( 0, %2 );" )
133 .arg( aProfileName ).arg( "HYDROData_IPolyline.SECTION_SPLINE" );
134 aResList << QString( "" );
138 aResList << QString( "%1.Update();" ).arg( aProfileName );
139 aResList << QString( "" );
144 TopoDS_Shape HYDROData_Profile::GetTopShape() const
148 gp_XY aFirstPoint, aLastPoint;
149 if ( !GetLeftPoint( aFirstPoint, false ) || !GetRightPoint( aLastPoint, false ) )
152 gp_Pnt aPnt1( aFirstPoint.X(), aFirstPoint.Y(), 0 );
153 gp_Pnt aPnt2( aLastPoint.X(), aLastPoint.Y(), 0 );
155 BRepBuilderAPI_MakeEdge aMakeEdge( aPnt1, aPnt2 );
156 TopoDS_Edge anEdge = aMakeEdge;
158 BRepBuilderAPI_MakeWire aMakeWire( anEdge );
164 TopoDS_Shape HYDROData_Profile::GetShape3D() const
166 TopoDS_Shape aShape = HYDROData_Object::GetShape3D();
167 if( aShape.IsNull() )
168 aShape = CreateProfileWire( true );
172 TopoDS_Shape HYDROData_Profile::CreateProfileWire( bool canUseDefaultPoints ) const
175 Handle(HYDROData_ProfileUZ) aProfile = GetProfileUZ( false );
176 if ( !aProfile.IsNull() )
178 ProfilePoints aProfilePoints = GetProfilePoints( false, canUseDefaultPoints );
179 HYDROData_IPolyline::SectionType aSectionType = aProfile->GetSectionType( 0 );
181 aWire = HYDROData_PolylineXY::BuildWire( aSectionType, false, aProfilePoints );
186 void HYDROData_Profile::Update()
188 HYDROData_Object::Update();
190 TopoDS_Shape aShape = CreateProfileWire( true );
191 SetShape3D( aShape );
194 QColor HYDROData_Profile::DefaultFillingColor() const
196 return QColor( Qt::transparent );
199 QColor HYDROData_Profile::DefaultBorderColor() const
201 return QColor( Qt::black );
204 bool HYDROData_Profile::IsValid() const
206 gp_XY aFirstPoint, aLastPoint;
207 if ( !GetLeftPoint( aFirstPoint, false ) || !GetRightPoint( aLastPoint, false ) )
210 int aNbPoints = NbPoints();
211 return aNbPoints > 1;
214 void HYDROData_Profile::SetLeftPoint( const gp_XY& theGPoint, bool IsConvertFromGlobal )
216 TDF_Label aLabel = myLab.FindChild( DataTag_FirstPoint );
217 if ( aLabel.IsNull() )
220 Handle(HYDROData_Document) aDoc = HYDROData_Document::Document( Label() );
221 gp_XY aLPoint = theGPoint;
222 if( IsConvertFromGlobal )
223 aDoc->Transform( aLPoint, true );
225 Handle(TDataStd_RealArray) anArray;
226 if ( !aLabel.FindAttribute( TDataStd_RealArray::GetID(), anArray ) )
227 anArray = TDataStd_RealArray::Set( aLabel, 0, 1 );
229 anArray->SetValue( 0, aLPoint.X() );
230 anArray->SetValue( 1, aLPoint.Y() );
235 bool HYDROData_Profile::GetLeftPoint( gp_XY& thePoint, bool IsConvertToGlobal,
236 bool CanUseDefault ) const
238 HYDROData_ProfileUZ::PointsList aParametricPoints = GetParametricPoints();
239 if ( aParametricPoints.Length() < 2 )
242 thePoint = GetParametricPoints().First();
244 //thePoint.SetX( 0 );
245 thePoint.SetY( 0 ); //default left point of not-georeferenced profile
246 TDF_Label aLabel = myLab.FindChild( DataTag_FirstPoint, false );
247 if ( aLabel.IsNull() )
249 return CanUseDefault;
252 Handle(HYDROData_Document) aDoc = HYDROData_Document::Document( myLab );
253 Handle(TDataStd_RealArray) anArray;
254 if ( !aLabel.FindAttribute( TDataStd_RealArray::GetID(), anArray ) )
256 return CanUseDefault;
259 thePoint.SetX( anArray->Value( 0 ) );
260 thePoint.SetY( anArray->Value( 1 ) );
262 if( IsConvertToGlobal )
263 aDoc->Transform( thePoint, false );
268 void HYDROData_Profile::SetRightPoint( const gp_XY& theGPoint, bool IsConvertFromGlobal )
270 TDF_Label aLabel = myLab.FindChild( DataTag_LastPoint );
272 Handle(HYDROData_Document) aDoc = HYDROData_Document::Document( Label() );
273 gp_XY aLPoint = theGPoint;
274 if( IsConvertFromGlobal )
275 aDoc->Transform( aLPoint, true );
277 Handle(TDataStd_RealArray) anArray;
278 if ( !aLabel.FindAttribute( TDataStd_RealArray::GetID(), anArray ) )
279 anArray = TDataStd_RealArray::Set( aLabel, 0, 1 );
281 anArray->SetValue( 0, aLPoint.X() );
282 anArray->SetValue( 1, aLPoint.Y() );
287 bool HYDROData_Profile::GetRightPoint( gp_XY& thePoint, bool IsConvertToGlobal,
288 bool CanUseDefault ) const
290 HYDROData_ProfileUZ::PointsList aParametricPoints = GetParametricPoints();
291 if ( aParametricPoints.Length() < 2 )
294 thePoint = GetParametricPoints().Last();
297 TDF_Label aLabel = myLab.FindChild( DataTag_LastPoint, false );
298 if ( aLabel.IsNull() )
300 return CanUseDefault;
303 Handle(HYDROData_Document) aDoc = HYDROData_Document::Document( myLab );
304 Handle(TDataStd_RealArray) anArray;
305 if ( !aLabel.FindAttribute( TDataStd_RealArray::GetID(), anArray ) )
307 return CanUseDefault;
310 thePoint.SetX( anArray->Value( 0 ) );
311 thePoint.SetY( anArray->Value( 1 ) );
313 if( IsConvertToGlobal )
314 aDoc->Transform( thePoint, false );
319 void HYDROData_Profile::Invalidate()
321 TDF_Label aFirstLabel = myLab.FindChild( DataTag_FirstPoint, false );
322 if ( !aFirstLabel.IsNull() )
323 aFirstLabel.ForgetAllAttributes();
325 TDF_Label aLastLabel = myLab.FindChild( DataTag_LastPoint, false );
326 if ( !aLastLabel.IsNull() )
327 aLastLabel.ForgetAllAttributes();
332 Handle(HYDROData_ProfileUZ) HYDROData_Profile::GetProfileUZ( const bool theIsCreate ) const
334 Handle(HYDROData_ProfileUZ) aProfileUZ;
336 TDF_Label aLabel = myLab.FindChild( DataTag_ChildProfileUZ, theIsCreate );
337 if ( aLabel.IsNull() )
340 aProfileUZ = Handle(HYDROData_ProfileUZ)::DownCast( HYDROData_Iterator::Object( aLabel ) );
341 if ( aProfileUZ.IsNull() && theIsCreate )
343 aProfileUZ = Handle(HYDROData_ProfileUZ)::DownCast(
344 HYDROData_Iterator::CreateObject( aLabel, KIND_PROFILEUZ ) );
350 int HYDROData_Profile::NbPoints() const
352 Handle(HYDROData_ProfileUZ) aProfileUZ = GetProfileUZ( false );
353 return aProfileUZ.IsNull() ? 0 : aProfileUZ->NbPoints();
356 void HYDROData_Profile::RemovePoints()
358 Handle(HYDROData_ProfileUZ) aProfileUZ = GetProfileUZ( false );
359 if ( !aProfileUZ.IsNull() )
361 aProfileUZ->RemoveSections();
366 void HYDROData_Profile::SetParametricPoints( const HYDROData_ProfileUZ::PointsList& thePoints )
370 Handle(HYDROData_ProfileUZ) aProfileUZ = GetProfileUZ();
371 for ( int i = 1, n = thePoints.Length(); i <= n ; ++i )
373 const HYDROData_ProfileUZ::Point& aPoint = thePoints.Value( i );
374 aProfileUZ->AddPoint( 0, aPoint );
380 HYDROData_ProfileUZ::PointsList HYDROData_Profile::GetParametricPoints() const
382 Handle(HYDROData_ProfileUZ) aProfileUZ = GetProfileUZ( false );
383 return aProfileUZ.IsNull() ? HYDROData_ProfileUZ::PointsList() : aProfileUZ->GetPoints();
386 void HYDROData_Profile::SetProfilePoints( const ProfilePoints& thePoints, bool IsConvertFromGlobal )
389 if ( thePoints.Length() < 2 )
392 gp_XY aFirstPoint, aLastPoint;
394 Handle(HYDROData_Document) aDoc = HYDROData_Document::Document( Label() );
395 Handle(HYDROData_ProfileUZ) aProfileUZ = GetProfileUZ();
396 for ( int i = 1, n = thePoints.Length(); i <= n ; ++i )
398 ProfilePoint aPoint = thePoints.Value( i );
399 if( IsConvertFromGlobal )
400 aDoc->Transform( aPoint, true );
402 gp_XY aPointXY( aPoint.X(), aPoint.Y() );
405 aFirstPoint = aPointXY;
407 aLastPoint = aPointXY;
409 double aDistance = gp_Pnt2d( aFirstPoint ).Distance( aPointXY );
411 HYDROData_ProfileUZ::Point aParPoint( aDistance, aPoint.Z() );
412 aProfileUZ->AddPoint( 0, aParPoint );
415 SetLeftPoint( aFirstPoint, false );//already converted to local CS
416 SetRightPoint( aLastPoint, false );
419 HYDROData_Profile::ProfilePoints HYDROData_Profile::GetProfilePoints
420 ( bool IsConvertToGlobal, bool CanUseDefaultLeftRight ) const
422 ProfilePoints aResPoints;
424 gp_XY aFirstPoint, aLastPoint;
425 if ( !GetLeftPoint( aFirstPoint, IsConvertToGlobal, CanUseDefaultLeftRight ) ||
426 !GetRightPoint( aLastPoint, IsConvertToGlobal, CanUseDefaultLeftRight ) )
429 HYDROData_ProfileUZ::PointsList aParametricPoints = GetParametricPoints();
430 if ( aParametricPoints.Length() < 2 )
433 const HYDROData_ProfileUZ::Point& aFirstParPoint = aParametricPoints.First();
434 const HYDROData_ProfileUZ::Point& aLastParPoint = aParametricPoints.Last();
436 double aFullLength = aLastPoint.X() - aFirstPoint.X();
437 double aParFullLength = aLastParPoint.X() - aFirstParPoint.X();
439 // Add first point as is
440 aResPoints.Append( ProfilePoint( aFirstPoint.X(), aFirstPoint.Y(), aFirstParPoint.Y() ) );
442 // Compute all other points
443 for ( int i = 2, n = aParametricPoints.Length(); i < n ; ++i )
445 const HYDROData_ProfileUZ::Point& aParPoint = aParametricPoints.Value( i );
447 double aParPointDist = aParPoint.X() - aFirstParPoint.X();
448 double aRatio = aParPointDist / aParFullLength;
450 double aParX = aFirstPoint.X() * (1-aRatio) + aLastPoint.X() * aRatio;
451 double aParY = aFirstPoint.Y() * (1-aRatio) + aLastPoint.Y() * aRatio;
453 ProfilePoint aCompPoint( aParX, aParY, aParPoint.Y() );
454 aResPoints.Append( aCompPoint );
457 // Add last point as is
458 aResPoints.Append( ProfilePoint( aLastPoint.X(), aLastPoint.Y(), aLastParPoint.Y() ) );
463 void HYDROData_Profile::SetFilePath( const TCollection_AsciiString& theFilePath )
465 TDataStd_AsciiString::Set( myLab.FindChild( DataTag_FilePath ), theFilePath );
468 TCollection_AsciiString HYDROData_Profile::GetFilePath() const
470 TCollection_AsciiString aRes;
472 Handle(TDataStd_AsciiString) anAsciiStr;
473 if ( myLab.FindChild( DataTag_FilePath ).FindAttribute( TDataStd_AsciiString::GetID(), anAsciiStr ) )
474 aRes = anAsciiStr->Get();
479 int HYDROData_Profile::ImportFromFile( const Handle(HYDROData_Document)& theDoc,
480 const TCollection_AsciiString& theFileName,
481 NCollection_Sequence<int>& theBadProfilesIds )
483 if ( theDoc.IsNull() || theFileName.IsEmpty() )
486 OSD_File aFile( theFileName );
487 if ( !aFile.IsReadable() )
490 aFile.Open( OSD_ReadOnly, OSD_Protection() );
491 if ( !aFile.IsOpen() )
494 NCollection_Sequence<Handle(HYDROData_Profile)> aCreatedProfiles;
497 Handle(HYDROData_Profile) aNewProfile;
498 for ( ; !aFile.IsAtEnd(); ++aProfileId )
500 if ( aNewProfile.IsNull() )
501 aNewProfile = Handle(HYDROData_Profile)::DownCast( theDoc->CreateObject( KIND_PROFILE ) );
503 bool anIsRead = false;
504 if ( aNewProfile->ImportFromFile( aFile, &anIsRead ) )
506 aCreatedProfiles.Append( aNewProfile );
507 aNewProfile.Nullify();
511 theBadProfilesIds.Append( aProfileId );
515 if ( !aNewProfile.IsNull() )
516 aNewProfile->Remove();
521 for ( int i = 1, n = aCreatedProfiles.Length(); i <= n ; ++i )
523 Handle(HYDROData_Profile) aProfile = aCreatedProfiles.Value( i );
525 QString aProfileName = HYDROData_Tool::GenerateObjectName( theDoc, "Profile" );
526 aProfile->SetName( aProfileName );
528 aProfile->SetFilePath( theFileName );
530 aProfile->SetBorderColor( aProfile->DefaultBorderColor() );
533 return aCreatedProfiles.Length();
536 bool HYDROData_Profile::ImportFromFile( const TCollection_AsciiString& theFileName,
542 // Try to open the file
543 OSD_File aFile( theFileName );
544 if ( !aFile.IsReadable() )
547 aFile.Open( OSD_ReadOnly, OSD_Protection() );
548 if ( !aFile.IsOpen() )
551 bool aRes = ImportFromFile( aFile, theIsRead );
559 SetFilePath( theFileName );
565 bool HYDROData_Profile::ImportFromFile( OSD_File& theFile,
571 if ( !theFile.IsOpen() )
576 bool anIsParametric = false;
577 bool anIsGeoref = false;
579 HYDROData_ProfileUZ::PointsList aPointsUZ;
580 ProfilePoints aPointsXYZ;
582 double aPrevVal = -DBL_MAX;
583 while ( !theFile.IsAtEnd() )
585 Standard_Integer aNbRead = 0;
586 TCollection_AsciiString aLine;
587 theFile.ReadLine( aLine, 1024, aNbRead );
589 aLine.LeftAdjust(); aLine.RightAdjust();
590 if ( aLine.IsEmpty() )
592 if ( !anIsParametric && !anIsGeoref )
593 continue; // Definition is not started yet
595 break; // Next profile started
598 // Set flag of read status to true
602 TCollection_AsciiString aValX = aLine.Token( " \t", 1 );
603 TCollection_AsciiString aValY = aLine.Token( " \t", 2 );
604 TCollection_AsciiString aValZ = aLine.Token( " \t", 3 );
606 if ( aValX.IsEmpty() || !aValX.IsRealValue() ||
607 aValY.IsEmpty() || !aValY.IsRealValue() )
613 if ( !anIsParametric && !anIsGeoref )
615 anIsParametric = aValZ.IsEmpty();
616 anIsGeoref = !aValZ.IsEmpty();
619 double aCoordX = aValX.RealValue();
620 double aCoordY = aValY.RealValue();
622 if ( boost::math::isnan( aCoordX ) || boost::math::isinf( aCoordX ) ||
623 boost::math::isnan( aCoordY ) || boost::math::isinf( aCoordY ) )
626 if ( anIsParametric )
628 if ( aCoordX < aPrevVal )
630 // Move back readed line
631 theFile.Seek( -( aNbRead + 1 ), OSD_FromHere );
635 HYDROData_ProfileUZ::Point aPoint( aCoordX, aCoordY );
636 aPointsUZ.Append( aPoint );
642 if ( aValZ.IsEmpty() || !aValZ.IsRealValue() )
648 double aCoordZ = aValZ.RealValue();
649 if ( boost::math::isnan( aCoordZ ) || boost::math::isinf( aCoordZ ) )
652 ProfilePoint aPoint( aCoordX, aCoordY, aCoordZ );
653 aPointsXYZ.Append( aPoint );
657 aRes = aRes && ( anIsParametric && !aPointsUZ.IsEmpty() ||
658 anIsGeoref && !aPointsXYZ.IsEmpty() );
661 // Update profile points
662 if ( anIsParametric )
664 SetParametricPoints( aPointsUZ );
666 else if ( anIsGeoref )
668 SetProfilePoints( aPointsXYZ, true );
677 void HYDROData_Profile::UpdateLocalCS( double theDx, double theDy )
679 gp_XY aDelta( theDx, theDy );
682 GetLeftPoint( aPnt, false );
684 SetLeftPoint( aPnt, false );
686 GetRightPoint( aPnt, false );
688 SetRightPoint( aPnt, false );
691 HYDROData_Profile::ProfilePoint HYDROData_Profile::GetBottomPoint() const
693 ProfilePoint aBottom;
695 // Get parametric points
696 HYDROData_ProfileUZ::PointsList aParametricPoints = GetParametricPoints();
697 if ( aParametricPoints.Length() < 1 ) {
701 // Calculate midvalue for U parameter
702 Standard_Real anUMidValue = aParametricPoints.First().X();
703 Standard_Real anUMinValue = anUMidValue;
704 Standard_Real anUMaxValue = anUMidValue;
706 for ( int i = 2, aNbPoints = aParametricPoints.Size(); i <= aNbPoints; i++ ) {
707 const HYDROData_IPolyline::Point& aParPoint = aParametricPoints.Value( i );
708 Standard_Real anU = aParPoint.X();
710 if ( anU < anUMinValue ) {
712 } else if ( anU > anUMaxValue ) {
717 anUMidValue = ( anUMinValue + anUMaxValue ) / 2;
719 // Find index of the parametric point with minimal Z value
720 int aBottomIndex = 1;
721 HYDROData_IPolyline::Point aParBottom = aParametricPoints.First();
723 for ( int i = 2, aNbPoints = aParametricPoints.Size(); i <= aNbPoints; i++ ) {
724 const HYDROData_IPolyline::Point& aParPoint = aParametricPoints.Value( i );
725 if ( aParPoint.Y() < aParBottom.Y() ) {
727 aParBottom = aParPoint;
728 } else if ( aParPoint.Y() == aParBottom.Y() ) {
729 // Check which point is neares to the U = 0.5
730 if ( fabs( aParPoint.X() - anUMidValue ) < fabs( aParBottom.X() - anUMidValue ) ) {
732 aParBottom = aParPoint;
737 // Find the corresponding profile point
738 ProfilePoints aProfilePoints = GetProfilePoints( false );
739 if ( aBottomIndex >= 1 && aBottomIndex <= aProfilePoints.Length() ) {
740 aBottom = aProfilePoints.Value( aBottomIndex );
746 HYDROData_Profile::ProfilePoint HYDROData_Profile::GetMiddlePoint( bool CanUseDefault ) const
748 ProfilePoint aMiddlePoint;
750 gp_XY aLeftPnt, aRightPnt;
751 if ( GetLeftPoint( aLeftPnt, true, CanUseDefault ) && GetRightPoint( aRightPnt, true, CanUseDefault ) ) {
752 gp_XYZ aPnt1( aLeftPnt.X(), aLeftPnt.Y(), 0. );
753 gp_XYZ aPnt2( aRightPnt.X(), aRightPnt.Y(), 0. );
754 gp_Pnt aMiddlePoint2d( 0.5 * ( aPnt1 + aPnt2 ) );
756 gp_Lin aMidLin( aMiddlePoint2d, gp::DZ() );
757 TopoDS_Edge aMidEdge = BRepLib_MakeEdge( aMidLin );
759 TopoDS_Iterator anIt( TopoDS::Wire( GetShape3D() ) );
760 for ( ; anIt.More(); anIt.Next()) {
761 const TopoDS_Edge& anEdge = TopoDS::Edge( anIt.Value() );
764 Standard_Real aStart, anEnd;
765 Handle(Geom_Curve) aCurve = BRep_Tool::Curve( anEdge, aStart, anEnd );
766 gp_Pnt aMiddlePointOnCurve = aCurve->Value( ( aStart + anEnd ) / 2 );
769 BRepExtrema_ExtCC ExtremaEE( aMidEdge, anEdge);
770 if (ExtremaEE.IsDone() && ExtremaEE.NbExt() != 0) {
771 for ( Standard_Integer i = 1; i <= ExtremaEE.NbExt(); i++ ) {
772 if ( ExtremaEE.SquareDistance(i) <= Precision::Confusion() ) {
773 aMiddlePoint = ExtremaEE.PointOnE1(i).XYZ();