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4796758e8d
Copy constructor and assignment operator from handle of derived type is added in handle class. They are enabled only if macro OCC_HANDLE_NOCASTS is defined, and operators of cast of handle to reference to handle to base type are disabled in that case. Useless type casts to handle to base type are removed in GC and GCE2d classes. Code returning reference to handle from function is corrected to return it either by value or as reference to handle of actual type.
97 lines
3.6 KiB
C++
97 lines
3.6 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_MakeEllipse_HeaderFile
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#define _GCE2d_MakeEllipse_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_Ellipse.hxx>
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class StdFail_NotDone;
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class gp_Elips2d;
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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 to
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//! create Ellipse from Geom2d.
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//! * Create an Ellipse from two apex and the center.
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//! Defines an ellipse in 2D space.
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//! The parametrization range is [0,2*PI].
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//! The ellipse is a closed and periodic curve.
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//! The center of the ellipse is the "Location" point of its
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//! axis placement "XAxis".
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//! The "XAxis" of the ellipse defines the origin of the
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//! parametrization, it is the major axis of the ellipse.
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//! The YAxis is the minor axis of the ellipse.
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class GCE2d_MakeEllipse : public GCE2d_Root
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{
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public:
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DEFINE_STANDARD_ALLOC
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//! Creates an ellipse from a non persistent one from package gp
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Standard_EXPORT GCE2d_MakeEllipse(const gp_Elips2d& E);
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//! MajorAxis is the local coordinate system of the ellipse.
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//! It is the "XAxis". The minor axis is the YAxis of the
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//! ellipse.
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//! Sense give the sense of parametrization of the Ellipse.
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//! It is not forbidden to create an ellipse with MajorRadius =
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//! MinorRadius.
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//! The status is "InvertRadius" if MajorRadius < MinorRadius or
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//! "NegativeRadius" if MinorRadius < 0.
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Standard_EXPORT GCE2d_MakeEllipse(const gp_Ax2d& MajorAxis, const Standard_Real MajorRadius, const Standard_Real MinorRadius, const Standard_Boolean Sense = Standard_True);
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//! Axis is the local coordinate system of the ellipse.
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//! It is not forbidden to create an ellipse with MajorRadius =
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//! MinorRadius.
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//! The status is "InvertRadius" if MajorRadius < MinorRadius or
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//! "NegativeRadius" if MinorRadius < 0.
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Standard_EXPORT GCE2d_MakeEllipse(const gp_Ax22d& Axis, const Standard_Real MajorRadius, const Standard_Real MinorRadius);
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//! Make an Ellipse centered on the point Center, where
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//! - the major axis of the ellipse is defined by Center and S1,
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//! - its major radius is the distance between Center and S1, and
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//! - its minor radius is the distance between S2 and the major axis.
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//! The implicit orientation of the ellipse is:
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//! - the sense defined by Axis or E,
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//! - the sense defined by points Center, S1 and S2,
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//! - the trigonometric sense if Sense is not given or is true, or
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//! - the opposite sense if Sense is false.
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Standard_EXPORT GCE2d_MakeEllipse(const gp_Pnt2d& S1, const gp_Pnt2d& S2, const gp_Pnt2d& Center);
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//! Returns the constructed ellipse.
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//! Exceptions StdFail_NotDone if no ellipse is constructed.
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Standard_EXPORT const Handle(Geom2d_Ellipse)& Value() const;
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operator const Handle(Geom2d_Ellipse)& () const { return Value(); }
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private:
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Handle(Geom2d_Ellipse) TheEllipse;
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};
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#endif // _GCE2d_MakeEllipse_HeaderFile
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