0031642: Visualization - crash in Graphic3d_Structure::SetVisual() on redisplaying...
[occt.git] / src / GCE2d / GCE2d_MakeScale.hxx
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42cf5bc1 1// Created on: 1992-09-28
2// Created by: Remi GILET
3// Copyright (c) 1992-1999 Matra Datavision
4// Copyright (c) 1999-2014 OPEN CASCADE SAS
5//
6// This file is part of Open CASCADE Technology software library.
7//
8// This library is free software; you can redistribute it and/or modify it under
9// the terms of the GNU Lesser General Public License version 2.1 as published
10// by the Free Software Foundation, with special exception defined in the file
11// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
12// distribution for complete text of the license and disclaimer of any warranty.
13//
14// Alternatively, this file may be used under the terms of Open CASCADE
15// commercial license or contractual agreement.
16
17#ifndef _GCE2d_MakeScale_HeaderFile
18#define _GCE2d_MakeScale_HeaderFile
19
20#include <Standard.hxx>
21#include <Standard_DefineAlloc.hxx>
22#include <Standard_Handle.hxx>
23
24#include <Standard_Real.hxx>
25class Geom2d_Transformation;
26class gp_Pnt2d;
27
28
29//! This class implements an elementary construction algorithm for
30//! a scaling transformation in 2D space. The result is a
31//! Geom2d_Transformation transformation.
32//! A MakeScale object provides a framework for:
33//! - defining the construction of the transformation,
34//! - implementing the construction algorithm, and
35//! - consulting the result.
36class GCE2d_MakeScale
37{
38public:
39
40 DEFINE_STANDARD_ALLOC
41
42
43 //! Constructs a scaling transformation with
44 //! - Point as the center of the transformation, and
45 //! - Scale as the scale factor.
46 Standard_EXPORT GCE2d_MakeScale(const gp_Pnt2d& Point, const Standard_Real Scale);
47
48 //! Returns the constructed transformation.
49 Standard_EXPORT const Handle(Geom2d_Transformation)& Value() const;
50operator const Handle(Geom2d_Transformation)& () const { return Value(); }
51
52
53
54
55protected:
56
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59
60
61private:
62
63
64
65 Handle(Geom2d_Transformation) TheScale;
66
67
68};
69
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75
76#endif // _GCE2d_MakeScale_HeaderFile