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111 lines
4.1 KiB
C++
111 lines
4.1 KiB
C++
// Created on: 1992-09-28
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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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#ifndef _GCE2d_MakeCircle_HeaderFile
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#define _GCE2d_MakeCircle_HeaderFile
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#include <Standard.hxx>
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#include <Standard_DefineAlloc.hxx>
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#include <Standard_Handle.hxx>
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#include <GCE2d_Root.hxx>
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#include <Geom2d_Circle.hxx>
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class gp_Circ2d;
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class gp_Ax2d;
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class gp_Ax22d;
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class gp_Pnt2d;
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//! This class implements the following algorithms used
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//! to create Circle from Geom2d.
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//!
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//! * Create a Circle parallel to another and passing
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//! though a point.
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//! * Create a Circle parallel to another at the distance
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//! Dist.
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//! * Create a Circle passing through 3 points.
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//! * Create a Circle with its center and the normal of its
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//! plane and its radius.
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//! * Create a Circle with its axis and radius.
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class GCE2d_MakeCircle : public GCE2d_Root
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{
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public:
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DEFINE_STANDARD_ALLOC
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//! creates a circle from a non persistent one.
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Standard_EXPORT GCE2d_MakeCircle(const gp_Circ2d& C);
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//! A is the "XAxis" of the circle which defines the origin
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//! of parametrization.
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//! It is not forbidden to create a circle with Radius = 0.0
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//! The status is "NegativeRadius" if Radius < 0.
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Standard_EXPORT GCE2d_MakeCircle(const gp_Ax2d& A, const Standard_Real Radius, const Standard_Boolean Sense = Standard_True);
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//! A is the local coordinate system of the circle which defines
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//! the origin of parametrization.
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//! It is not forbidden to create a circle with Radius = 0.0
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//! The status is "NegativeRadius" if Radius < 0.
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Standard_EXPORT GCE2d_MakeCircle(const gp_Ax22d& A, const Standard_Real Radius);
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//! Make a Circle from Geom2d <TheCirc> parallel to another
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//! Circ <Circ> with a distance <Dist>.
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//! If Dist is greater than zero the result is enclosing
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//! the circle <Circ>, else the result is enclosed by the
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//! circle <Circ>.
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Standard_EXPORT GCE2d_MakeCircle(const gp_Circ2d& Circ, const Standard_Real Dist);
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//! Make a Circle from Geom2d <TheCirc> parallel to another
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//! Circ <Circ> and passing through a Pnt <Point>.
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Standard_EXPORT GCE2d_MakeCircle(const gp_Circ2d& Circ, const gp_Pnt2d& Point);
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//! Make a Circ from gp <TheCirc> passing through 3
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//! Pnt2d <P1>,<P2>,<P3>.
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Standard_EXPORT GCE2d_MakeCircle(const gp_Pnt2d& P1, const gp_Pnt2d& P2, const gp_Pnt2d& P3);
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//! Make a Circ from geom2d <TheCirc> by its center an radius.
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Standard_EXPORT GCE2d_MakeCircle(const gp_Pnt2d& P, const Standard_Real Radius, const Standard_Boolean Sense = Standard_True);
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//! Makes a Circle from geom2d <TheCirc> with its center
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//! <Center> and a point giving the radius.
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//! If Sense is true the local coordinate system of
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//! the solution is direct and non direct in the other case.
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//! Warning
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//! The MakeCircle class does not prevent the
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//! construction of a circle with a null radius.
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//! If an error occurs (that is, when IsDone returns
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//! false), the Status function returns:
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//! - gce_NegativeRadius if Radius is less than 0.0, or
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//! - gce_IntersectionError if points P1, P2 and P3
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//! are collinear and the three are not coincident.
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Standard_EXPORT GCE2d_MakeCircle(const gp_Pnt2d& Center, const gp_Pnt2d& Point, const Standard_Boolean Sense = Standard_True);
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//! Returns the constructed circle.
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//! Exceptions StdFail_NotDone if no circle is constructed.
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Standard_EXPORT const Handle(Geom2d_Circle)& Value() const;
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operator const Handle(Geom2d_Circle)& () const { return Value(); }
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private:
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Handle(Geom2d_Circle) TheCircle;
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};
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#endif // _GCE2d_MakeCircle_HeaderFile
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