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121 lines
4.0 KiB
C++
121 lines
4.0 KiB
C++
// Created on: 1992-10-02
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// Created by: Remi GILET
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// Copyright (c) 1992-1999 Matra Datavision
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// Copyright (c) 1999-2014 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 <GCE2d_MakeArcOfCircle.hxx>
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#include <gce_MakeCirc2d.hxx>
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#include <gce_MakeLin2d.hxx>
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#include <Geom2d_Circle.hxx>
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#include <Geom2d_TrimmedCurve.hxx>
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#include <gp_Circ2d.hxx>
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#include <gp_Pnt2d.hxx>
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#include <gp_Vec2d.hxx>
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#include <IntAna2d_AnaIntersection.hxx>
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#include <StdFail_NotDone.hxx>
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GCE2d_MakeArcOfCircle::GCE2d_MakeArcOfCircle(const gp_Pnt2d& P1 ,
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const gp_Pnt2d& P2 ,
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const gp_Pnt2d& P3 )
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{
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gce_MakeCirc2d Cir = gce_MakeCirc2d(P1,P2,P3);
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TheError = Cir.Status();
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if (TheError == gce_Done) {
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gp_Circ2d C(Cir.Value());
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Standard_Real Alpha1 = ElCLib::Parameter(C,P1);
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Standard_Real Alpha2 = ElCLib::Parameter(C,P3);
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Handle(Geom2d_Circle) Circ = new Geom2d_Circle(C);
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TheArc= new Geom2d_TrimmedCurve(Circ,Alpha1,Alpha2,Standard_True);
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}
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}
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GCE2d_MakeArcOfCircle::GCE2d_MakeArcOfCircle(const gp_Pnt2d& P1 ,
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const gp_Vec2d& V ,
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const gp_Pnt2d& P2 )
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{
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Standard_Boolean Sense;
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gp_Circ2d cir;
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gp_Lin2d corde = gce_MakeLin2d(P1,P2);
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gp_Dir2d dir(corde.Direction());
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gp_Lin2d bis(gp_Pnt2d((P1.X()+P2.X())/2.,(P1.Y()+P2.Y())/2.),
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gp_Dir2d(-dir.Y(),dir.X()));
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gp_Lin2d norm(P1,gp_Dir2d(-V.Y(),V.X()));
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TheError = gce_ConfusedPoints;
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IntAna2d_AnaIntersection Intp(bis,norm);
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if (Intp.IsDone())
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{
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if (!Intp.IsEmpty())
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{
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gp_Pnt2d center(Intp.Point(1).Value());
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Standard_Real rad = (center.Distance(P1)+center.Distance(P2))/2.;
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cir = gce_MakeCirc2d(center,rad);
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TheError = gce_Done;
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}
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}
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if (TheError == gce_Done) {
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Standard_Real Alpha1 = ElCLib::Parameter(cir,P1);
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Standard_Real Alpha2 = ElCLib::Parameter(cir,P2);
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Handle(Geom2d_Circle) Circ = new Geom2d_Circle(cir);
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gp_Vec2d vv(dir);
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Standard_Real cross = V^vv;
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Sense = cross > 0.;
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TheArc= new Geom2d_TrimmedCurve(Circ,Alpha1,Alpha2,Sense);
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}
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}
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GCE2d_MakeArcOfCircle::GCE2d_MakeArcOfCircle(const gp_Circ2d& Circ ,
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const gp_Pnt2d& P1 ,
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const gp_Pnt2d& P2 ,
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const Standard_Boolean Sense )
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{
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Standard_Real Alpha1 = ElCLib::Parameter(Circ,P1);
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Standard_Real Alpha2 = ElCLib::Parameter(Circ,P2);
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Handle(Geom2d_Circle) C = new Geom2d_Circle(Circ);
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TheArc= new Geom2d_TrimmedCurve(C,Alpha1,Alpha2,Sense);
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TheError = gce_Done;
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}
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GCE2d_MakeArcOfCircle::GCE2d_MakeArcOfCircle(const gp_Circ2d& Circ ,
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const gp_Pnt2d& P ,
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const Standard_Real Alpha ,
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const Standard_Boolean Sense )
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{
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Standard_Real Alphafirst = ElCLib::Parameter(Circ,P);
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Handle(Geom2d_Circle) C = new Geom2d_Circle(Circ);
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TheArc= new Geom2d_TrimmedCurve(C,Alphafirst,Alpha,Sense);
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TheError = gce_Done;
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}
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GCE2d_MakeArcOfCircle::GCE2d_MakeArcOfCircle(const gp_Circ2d& Circ ,
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const Standard_Real Alpha1 ,
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const Standard_Real Alpha2 ,
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const Standard_Boolean Sense )
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{
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Handle(Geom2d_Circle) C = new Geom2d_Circle(Circ);
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TheArc= new Geom2d_TrimmedCurve(C,Alpha1,Alpha2,Sense);
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TheError = gce_Done;
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}
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const Handle(Geom2d_TrimmedCurve)& GCE2d_MakeArcOfCircle::Value() const
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{
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StdFail_NotDone_Raise_if (TheError != gce_Done,
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"GCE2d_MakeArcOfCircle::Value() - no result");
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return TheArc;
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}
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