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e2ca538ae6
Useless variable MAXTOLERANCEGEOM is removed in order to allow to place point at any distance from curve/surface. Algorithm is simplified: particular calculations for analytical geometry are removed, only using of Extrema_... is kept. Test case for issue #27110
228 lines
7.0 KiB
C++
228 lines
7.0 KiB
C++
// Created on: 2003-03-18
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// Created by: Oleg FEDYAEV
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// Copyright (c) 2003-2014 OPEN CASCADE SAS
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//
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// This file is part of Open CASCADE Technology software library.
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//
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// This library is free software; you can redistribute it and/or modify it under
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// the terms of the GNU Lesser General Public License version 2.1 as published
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// by the Free Software Foundation, with special exception defined in the file
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// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
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// distribution for complete text of the license and disclaimer of any warranty.
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//
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// Alternatively, this file may be used under the terms of Open CASCADE
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// commercial license or contractual agreement.
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#include <ElCLib.hxx>
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#include <ElSLib.hxx>
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#include <Extrema_ExtPC.hxx>
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#include <Extrema_ExtPC2d.hxx>
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#include <Extrema_ExtPS.hxx>
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#include <Geom2d_BezierCurve.hxx>
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#include <Geom2d_BSplineCurve.hxx>
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#include <Geom2d_Circle.hxx>
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#include <Geom2d_Curve.hxx>
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#include <Geom2d_Ellipse.hxx>
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#include <Geom2d_Hyperbola.hxx>
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#include <Geom2d_Line.hxx>
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#include <Geom2d_OffsetCurve.hxx>
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#include <Geom2d_Parabola.hxx>
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#include <Geom2d_TrimmedCurve.hxx>
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#include <Geom2dAdaptor_Curve.hxx>
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#include <Geom_BezierCurve.hxx>
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#include <Geom_BezierSurface.hxx>
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#include <Geom_BSplineCurve.hxx>
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#include <Geom_BSplineSurface.hxx>
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#include <Geom_Circle.hxx>
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#include <Geom_ConicalSurface.hxx>
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#include <Geom_Curve.hxx>
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#include <Geom_CylindricalSurface.hxx>
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#include <Geom_Ellipse.hxx>
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#include <Geom_Hyperbola.hxx>
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#include <Geom_Line.hxx>
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#include <Geom_OffsetCurve.hxx>
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#include <Geom_OffsetSurface.hxx>
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#include <Geom_Parabola.hxx>
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#include <Geom_Plane.hxx>
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#include <Geom_RectangularTrimmedSurface.hxx>
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#include <Geom_SphericalSurface.hxx>
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#include <Geom_Surface.hxx>
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#include <Geom_SurfaceOfLinearExtrusion.hxx>
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#include <Geom_SurfaceOfRevolution.hxx>
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#include <Geom_ToroidalSurface.hxx>
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#include <Geom_TrimmedCurve.hxx>
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#include <GeomAdaptor_Curve.hxx>
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#include <GeomAdaptor_Surface.hxx>
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#include <GeomLib_Tool.hxx>
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#include <gp_Circ.hxx>
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#include <gp_Circ2d.hxx>
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#include <gp_Cone.hxx>
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#include <gp_Cylinder.hxx>
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#include <gp_Elips.hxx>
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#include <gp_Elips2d.hxx>
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#include <gp_Hypr.hxx>
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#include <gp_Hypr2d.hxx>
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#include <gp_Lin.hxx>
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#include <gp_Lin2d.hxx>
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#include <gp_Parab.hxx>
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#include <gp_Parab2d.hxx>
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#include <gp_Pln.hxx>
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#include <gp_Pnt.hxx>
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#include <gp_Pnt2d.hxx>
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#include <gp_Sphere.hxx>
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#include <gp_Torus.hxx>
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#include <gp_Vec.hxx>
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// The functions Parameter(s) are used to compute parameter(s) of point
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// on curves and surfaces. The main rule is that tested point must lied
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// on curves or surfaces otherwise the resulted parameter(s) may be wrong.
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// To make search process more common the MaxDist value is used to define
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// the proximity of point to curve or surface. It is clear that this MaxDist
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// value can't be too high to be not in conflict with previous rule.
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static const Standard_Real PARTOLERANCE = 1.e-9;
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//=======================================================================
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//function : Parameter
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//purpose : Get parameter on curve of given point
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// return FALSE if point is far from curve than MaxDist
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// or computation fails
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//=======================================================================
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Standard_Boolean GeomLib_Tool::Parameter(const Handle(Geom_Curve)& Curve,
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const gp_Pnt& Point,
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const Standard_Real MaxDist,
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Standard_Real& U)
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{
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if( Curve.IsNull() ) return Standard_False;
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//
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U = 0.;
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Standard_Real aTol = MaxDist * MaxDist;
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//
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GeomAdaptor_Curve aGAC(Curve);
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Extrema_ExtPC extrema(Point,aGAC);
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//
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if( !extrema.IsDone() ) return Standard_False;
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//
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Standard_Integer n = extrema.NbExt();
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if( n <= 0 ) return Standard_False;
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//
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Standard_Integer i = 0, iMin = 0;
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Standard_Real Dist2Min = RealLast();
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for( i = 1; i <= n; i++ )
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{
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if (extrema.SquareDistance(i) < Dist2Min)
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{
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iMin = i;
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Dist2Min = extrema.SquareDistance(i);
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}
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}
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if( iMin != 0 && Dist2Min <= aTol )
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{
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U = (extrema.Point(iMin)).Parameter();
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}
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else
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{
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return Standard_False;
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}
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return Standard_True;
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}
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//=======================================================================
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//function : Parameters
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//purpose : Get parameters on surface of given point
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// return FALSE if point is far from surface than MaxDist
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// or computation fails
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//=======================================================================
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Standard_Boolean GeomLib_Tool::Parameters(const Handle(Geom_Surface)& Surface,
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const gp_Pnt& Point,
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const Standard_Real MaxDist,
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Standard_Real& U,
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Standard_Real& V)
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{
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if( Surface.IsNull() ) return Standard_False;
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//
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U = 0.;
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V = 0.;
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Standard_Real aTol = MaxDist * MaxDist;
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//
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GeomAdaptor_Surface aGAS(Surface);
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Standard_Real aTolU = PARTOLERANCE, aTolV = PARTOLERANCE;
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//
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Extrema_ExtPS extrema(Point,aGAS,aTolU,aTolV);
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//
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if( !extrema.IsDone() ) return Standard_False;
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//
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Standard_Integer n = extrema.NbExt();
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if( n <= 0 ) return Standard_False;
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//
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Standard_Real Dist2Min = RealLast();
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Standard_Integer i = 0, iMin = 0;
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for( i = 1; i <= n; i++ )
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{
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if( extrema.SquareDistance(i) < Dist2Min )
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{
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Dist2Min = extrema.SquareDistance(i);
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iMin = i;
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}
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}
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if( iMin != 0 && Dist2Min <= aTol)
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{
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extrema.Point(iMin).Parameter(U,V);
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}
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else
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{
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return Standard_False;
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}
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return Standard_True;
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}
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//=======================================================================
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//function : Parameter
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//purpose : Get parameter on curve of given point
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// return FALSE if point is far from curve than MaxDist
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// or computation fails
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//=======================================================================
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Standard_Boolean GeomLib_Tool::Parameter(const Handle(Geom2d_Curve)& Curve,
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const gp_Pnt2d& Point,
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const Standard_Real MaxDist,
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Standard_Real& U)
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{
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if( Curve.IsNull() ) return Standard_False;
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//
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U = 0.;
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Standard_Real aTol = MaxDist * MaxDist;
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//
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Geom2dAdaptor_Curve aGAC(Curve);
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Extrema_ExtPC2d extrema(Point,aGAC);
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if( !extrema.IsDone() ) return Standard_False;
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Standard_Integer n = extrema.NbExt();
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if( n <= 0 ) return Standard_False;
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Standard_Integer i = 0, iMin = 0;
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Standard_Real Dist2Min = RealLast();
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for ( i = 1; i <= n; i++ )
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{
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if( extrema.SquareDistance(i) < Dist2Min )
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{
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Dist2Min = extrema.SquareDistance(i);
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iMin = i;
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}
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}
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if( iMin != 0 && Dist2Min <= aTol )
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{
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U = (extrema.Point(iMin)).Parameter();
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}
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else
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{
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return Standard_False;
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}
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return Standard_True;
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}
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