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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.
75 lines
2.8 KiB
C++
75 lines
2.8 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 _GC_MakeArcOfEllipse_HeaderFile
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#define _GC_MakeArcOfEllipse_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 <GC_Root.hxx>
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#include <Geom_TrimmedCurve.hxx>
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class StdFail_NotDone;
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class gp_Elips;
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class gp_Pnt;
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//! Implements construction algorithms for an arc
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//! of ellipse in 3D space. The result is a Geom_TrimmedCurve curve.
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//! A MakeArcOfEllipse object provides a framework for:
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//! - defining the construction of the arc of ellipse,
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//! - implementing the construction algorithm, and
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//! - consulting the results. In particular, the
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//! Value function returns the constructed arc of ellipse.
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class GC_MakeArcOfEllipse : public GC_Root
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{
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public:
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DEFINE_STANDARD_ALLOC
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//! Constructs an arc of Ellipse (TrimmedCurve from Geom) from
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//! a Ellipse between two parameters Alpha1 and Alpha2.
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Standard_EXPORT GC_MakeArcOfEllipse(const gp_Elips& Elips, const Standard_Real Alpha1, const Standard_Real Alpha2, const Standard_Boolean Sense);
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//! Constructs an arc of Ellipse (TrimmedCurve from Geom) from
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//! a Ellipse between point <P> and the angle Alpha
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//! given in radians.
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Standard_EXPORT GC_MakeArcOfEllipse(const gp_Elips& Elips, const gp_Pnt& P, const Standard_Real Alpha, const Standard_Boolean Sense);
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//! Constructs an arc of Ellipse (TrimmedCurve from Geom) from
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//! a Ellipse between two points P1 and P2.
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//! The orientation of the arc of ellipse is:
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//! - the sense of Elips if Sense is true, or
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//! - the opposite sense if Sense is false.
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//! Notes:
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//! - Alpha1, Alpha2 and Alpha are angle values, given in radians.
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//! - IsDone always returns true.
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Standard_EXPORT GC_MakeArcOfEllipse(const gp_Elips& Elips, const gp_Pnt& P1, const gp_Pnt& P2, const Standard_Boolean Sense);
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//! Returns the constructed arc of ellipse.
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Standard_EXPORT const Handle(Geom_TrimmedCurve)& Value() const;
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operator const Handle(Geom_TrimmedCurve)& () const { return Value(); }
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private:
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Handle(Geom_TrimmedCurve) TheArc;
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};
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#endif // _GC_MakeArcOfEllipse_HeaderFile
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