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111 lines
3.3 KiB
C++
111 lines
3.3 KiB
C++
// Created on: 1992-11-05
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// Created by: Gilles DEBARBOUILLE
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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 _Units_ShiftedToken_HeaderFile
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#define _Units_ShiftedToken_HeaderFile
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#include <Standard.hxx>
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#include <Standard_Type.hxx>
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#include <Standard_Real.hxx>
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#include <Units_Token.hxx>
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#include <Standard_CString.hxx>
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#include <Standard_Integer.hxx>
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class Units_Dimensions;
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class Units_Token;
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class Units_ShiftedToken;
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DEFINE_STANDARD_HANDLE(Units_ShiftedToken, Units_Token)
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//! The ShiftedToken class inherits from Token and
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//! describes tokens which have a gap in addition of
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//! the multiplicative factor. This kind of token
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//! allows the description of linear functions which
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//! do not pass through the origin, of the form :
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//!
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//! y = ax +b
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//!
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//! where <x> and <y> are the unknown variables, <a>
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//! the mutiplicative factor, and <b> the gap relative
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//! to the ordinate axis.
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//!
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//! An example is the tranlation between the Celsius
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//! and Fahrenheit degree of temperature.
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class Units_ShiftedToken : public Units_Token
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{
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public:
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//! Creates and returns a shifted token. <aword> is a
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//! string containing the available word, <amean> gives
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//! the signification of the token, <avalue> is the
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//! numeric value of the dimension, <amove> is the gap,
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//! and <adimensions> is the dimension of the given word
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//! <aword>.
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Standard_EXPORT Units_ShiftedToken(const Standard_CString aword, const Standard_CString amean, const Standard_Real avalue, const Standard_Real amove, const Handle(Units_Dimensions)& adimensions);
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//! Creates and returns a token, which is a ShiftedToken.
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Standard_EXPORT virtual Handle(Units_Token) Creates() const Standard_OVERRIDE;
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//! Returns the gap <themove>
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Standard_EXPORT Standard_Real Move() const;
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//! This virtual method is called by the Measurement
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//! methods, to compute the measurement during a
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//! conversion.
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Standard_EXPORT virtual Standard_Real Multiplied (const Standard_Real avalue) const Standard_OVERRIDE;
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//! This virtual method is called by the Measurement
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//! methods, to compute the measurement during a
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//! conversion.
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Standard_EXPORT virtual Standard_Real Divided (const Standard_Real avalue) const Standard_OVERRIDE;
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//! Destroies the Token
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Standard_EXPORT virtual void Destroy() Standard_OVERRIDE;
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~Units_ShiftedToken()
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{
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Destroy();
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}
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Standard_EXPORT virtual void Dump (const Standard_Integer ashift, const Standard_Integer alevel) const Standard_OVERRIDE;
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DEFINE_STANDARD_RTTIEXT(Units_ShiftedToken,Units_Token)
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protected:
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private:
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Standard_Real themove;
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};
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#endif // _Units_ShiftedToken_HeaderFile
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