// Created on: 1992-09-28
// Created by: Remi GILET
// Copyright (c) 1992-1999 Matra Datavision
// Copyright (c) 1999-2014 OPEN CASCADE SAS
//
// This file is part of Open CASCADE Technology software library.
//
// This library is free software; you can redistribute it and/or modify it under
// the terms of the GNU Lesser General Public License version 2.1 as published
// by the Free Software Foundation, with special exception defined in the file
// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
// distribution for complete text of the license and disclaimer of any warranty.
//
// Alternatively, this file may be used under the terms of Open CASCADE
// commercial license or contractual agreement.
#ifndef _GCE2d_MakeCircle_HeaderFile
#define _GCE2d_MakeCircle_HeaderFile
#include
#include
#include
#include
#include
class StdFail_NotDone;
class gp_Circ2d;
class gp_Ax2d;
class gp_Ax22d;
class gp_Pnt2d;
//! This class implements the following algorithms used
//! to create Circle from Geom2d.
//!
//! * Create a Circle parallel to another and passing
//! though a point.
//! * Create a Circle parallel to another at the distance
//! Dist.
//! * Create a Circle passing through 3 points.
//! * Create a Circle with its center and the normal of its
//! plane and its radius.
//! * Create a Circle with its axis and radius.
class GCE2d_MakeCircle : public GCE2d_Root
{
public:
DEFINE_STANDARD_ALLOC
//! creates a circle from a non persistent one.
Standard_EXPORT GCE2d_MakeCircle(const gp_Circ2d& C);
//! A is the "XAxis" of the circle which defines the origin
//! of parametrization.
//! It is not forbidden to create a circle with Radius = 0.0
//! The status is "NegativeRadius" if Radius < 0.
Standard_EXPORT GCE2d_MakeCircle(const gp_Ax2d& A, const Standard_Real Radius, const Standard_Boolean Sense = Standard_True);
//! A is the local coordinate system of the circle which defines
//! the origin of parametrization.
//! It is not forbidden to create a circle with Radius = 0.0
//! The status is "NegativeRadius" if Radius < 0.
Standard_EXPORT GCE2d_MakeCircle(const gp_Ax22d& A, const Standard_Real Radius);
//! Make a Circle from Geom2d parallel to another
//! Circ with a distance .
//! If Dist is greater than zero the result is enclosing
//! the circle , else the result is enclosed by the
//! circle .
Standard_EXPORT GCE2d_MakeCircle(const gp_Circ2d& Circ, const Standard_Real Dist);
//! Make a Circle from Geom2d parallel to another
//! Circ and passing through a Pnt .
Standard_EXPORT GCE2d_MakeCircle(const gp_Circ2d& Circ, const gp_Pnt2d& Point);
//! Make a Circ from gp passing through 3
//! Pnt2d ,,.
Standard_EXPORT GCE2d_MakeCircle(const gp_Pnt2d& P1, const gp_Pnt2d& P2, const gp_Pnt2d& P3);
//! Make a Circ from geom2d by its center an radius.
Standard_EXPORT GCE2d_MakeCircle(const gp_Pnt2d& P, const Standard_Real Radius, const Standard_Boolean Sense = Standard_True);
//! Makes a Circle from geom2d with its center
//! and a point giving the radius.
//! If Sense is true the local coordinate system of
//! the solution is direct and non direct in the other case.
//! Warning
//! The MakeCircle class does not prevent the
//! construction of a circle with a null radius.
//! If an error occurs (that is, when IsDone returns
//! false), the Status function returns:
//! - gce_NegativeRadius if Radius is less than 0.0, or
//! - gce_IntersectionError if points P1, P2 and P3
//! are collinear and the three are not coincident.
Standard_EXPORT GCE2d_MakeCircle(const gp_Pnt2d& Center, const gp_Pnt2d& Point, const Standard_Boolean Sense = Standard_True);
//! Returns the constructed circle.
//! Exceptions StdFail_NotDone if no circle is constructed.
Standard_EXPORT const Handle(Geom2d_Circle)& Value() const;
operator const Handle(Geom2d_Circle)& () const { return Value(); }
private:
Handle(Geom2d_Circle) TheCircle;
};
#endif // _GCE2d_MakeCircle_HeaderFile