75 lines
2.9 KiB
C++
75 lines
2.9 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_MakeArcOfParabola_HeaderFile
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#define _GC_MakeArcOfParabola_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 gp_Parab;
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class gp_Pnt;
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//! Implements construction algorithms for an arc
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//! of parabola in 3D space. The result is a Geom_TrimmedCurve curve.
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//! A MakeArcOfParabola object provides a framework for:
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//! - defining the construction of the arc of parabola,
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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 parabola.
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class GC_MakeArcOfParabola : public GC_Root
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{
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public:
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DEFINE_STANDARD_ALLOC
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//! Creates an arc of Parabola (TrimmedCurve from Geom) from
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//! a Parabola between two parameters Alpha1 and Alpha2
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//! (given in radians).
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Standard_EXPORT GC_MakeArcOfParabola(const gp_Parab& Parab,
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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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//! Creates an arc of Parabola (TrimmedCurve from Geom) from
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//! a Parabola between point <P> and the parameter
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//! Alpha (given in radians).
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Standard_EXPORT GC_MakeArcOfParabola(const gp_Parab& Parab,
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const gp_Pnt& P,
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const Standard_Real Alpha,
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const Standard_Boolean Sense);
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//! Creates an arc of Parabola (TrimmedCurve from Geom) from
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//! a Parabola between two points P1 and P2.
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Standard_EXPORT GC_MakeArcOfParabola(const gp_Parab& Parab,
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const gp_Pnt& P1,
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const gp_Pnt& P2,
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const Standard_Boolean Sense);
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//! Returns the constructed arc of parabola.
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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_MakeArcOfParabola_HeaderFile
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