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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
3.8 KiB
C++
97 lines
3.8 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_MakeArcOfCircle_HeaderFile
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#define _GC_MakeArcOfCircle_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_Circ;
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class gp_Pnt;
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class gp_Vec;
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//! Implements construction algorithms for an
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//! arc of circle in 3D space. The result is a Geom_TrimmedCurve curve.
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//! A MakeArcOfCircle object provides a framework for:
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//! - defining the construction of the arc of circle,
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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 circle.
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class GC_MakeArcOfCircle : public GC_Root
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{
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public:
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DEFINE_STANDARD_ALLOC
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//! Make an arc of circle (TrimmedCurve from Geom) from
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//! a circle between two angles Alpha1 and Alpha2
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//! given in radiians.
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Standard_EXPORT GC_MakeArcOfCircle(const gp_Circ& Circ, const Standard_Real Alpha1, const Standard_Real Alpha2, const Standard_Boolean Sense);
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//! Make an arc of circle (TrimmedCurve from Geom) from
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//! a circle between point <P> and the angle Alpha
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//! given in radians.
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Standard_EXPORT GC_MakeArcOfCircle(const gp_Circ& Circ, const gp_Pnt& P, const Standard_Real Alpha, const Standard_Boolean Sense);
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//! Make an arc of circle (TrimmedCurve from Geom) from
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//! a circle between two points P1 and P2.
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Standard_EXPORT GC_MakeArcOfCircle(const gp_Circ& Circ, const gp_Pnt& P1, const gp_Pnt& P2, const Standard_Boolean Sense);
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//! Make an arc of circle (TrimmedCurve from Geom) from
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//! three points P1,P2,P3 between two points P1 and P2.
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Standard_EXPORT GC_MakeArcOfCircle(const gp_Pnt& P1, const gp_Pnt& P2, const gp_Pnt& P3);
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//! Make an arc of circle (TrimmedCurve from Geom) from
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//! two points P1,P2 and the tangente to the solution at
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//! the point P1.
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//! The orientation of the arc is:
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//! - the sense determined by the order of the points P1, P3 and P2;
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//! - the sense defined by the vector V; or
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//! - for other syntaxes:
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//! - the sense of Circ if Sense is true, or
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//! - the opposite sense if Sense is false.
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//! Note: Alpha1, Alpha2 and Alpha are angle values, given in radians.
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//! Warning
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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_ConfusedPoints if:
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//! - any 2 of the 3 points P1, P2 and P3 are coincident, or
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//! - P1 and P2 are coincident; or
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//! - gce_IntersectionError if:
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//! - P1, P2 and P3 are collinear and not coincident, or
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//! - the vector defined by the points P1 and
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//! P2 is collinear with the vector V.
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Standard_EXPORT GC_MakeArcOfCircle(const gp_Pnt& P1, const gp_Vec& V, const gp_Pnt& P2);
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//! Returns the constructed arc of circle.
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//! Exceptions StdFail_NotDone if no arc of circle is constructed.
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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_MakeArcOfCircle_HeaderFile
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