include/opencascade/GC_MakeScale.hxx

0001 // Created on: 1992-09-28
0002 // Created by: Remi GILET
0003 // Copyright (c) 1992-1999 Matra Datavision
0004 // Copyright (c) 1999-2014 OPEN CASCADE SAS
0005 //
0006 // This file is part of Open CASCADE Technology software library.
0007 //
0008 // This library is free software; you can redistribute it and/or modify it under
0009 // the terms of the GNU Lesser General Public License version 2.1 as published
0010 // by the Free Software Foundation, with special exception defined in the file
0011 // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
0012 // distribution for complete text of the license and disclaimer of any warranty.
0013 //
0014 // Alternatively, this file may be used under the terms of Open CASCADE
0015 // commercial license or contractual agreement.
0016
0017 #ifndef _GC_MakeScale_HeaderFile
0018 #define _GC_MakeScale_HeaderFile
0019
0020 #include <Standard.hxx>
0021 #include <Standard_DefineAlloc.hxx>
0022 #include <Standard_Handle.hxx>
0023
0024 #include <Standard_Real.hxx>
0025 class Geom_Transformation;
0026 class gp_Pnt;
0027
0028 //! This class implements an elementary construction algorithm for
0029 //! a scaling transformation in 3D space. The result is a
0030 //! Geom_Transformation transformation (a scaling transformation with
0031 //! the center point <Point> and the scaling value <Scale>).
0032 //! A MakeScale object provides a framework for:
0033 //! -   defining the construction of the transformation,
0034 //! -   implementing the construction algorithm, and
0035 //! -   consulting the result.
0036 class GC_MakeScale
0037 {
0038 public:
0039   DEFINE_STANDARD_ALLOC
0040
0041   //! Constructs a scaling transformation with
0042   //! -   Point as the center of the transformation, and
0043   //! -   Scale as the scale factor.
0044   Standard_EXPORT GC_MakeScale(const gp_Pnt& Point, const Standard_Real Scale);
0045
0046   //! Returns the constructed transformation.
0047   Standard_EXPORT const Handle(Geom_Transformation)& Value() const;
0048
0049   operator const Handle(Geom_Transformation) & () const { return Value(); }
0050
0051 protected:
0052 private:
0053   Handle(Geom_Transformation) TheScale;
0054 };
0055
0056 #endif // _GC_MakeScale_HeaderFile