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68 lines
2.8 KiB
C++
Executable File
68 lines
2.8 KiB
C++
Executable File
// Copyright (c) 1999-2012 OPEN CASCADE SAS
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//
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// The content of this file is subject to the Open CASCADE Technology Public
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// License Version 6.5 (the "License"). You may not use the content of this file
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// except in compliance with the License. Please obtain a copy of the License
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// at http://www.opencascade.org and read it completely before using this file.
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//
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// The Initial Developer of the Original Code is Open CASCADE S.A.S., having its
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// main offices at: 1, place des Freres Montgolfier, 78280 Guyancourt, France.
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//
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// The Original Code and all software distributed under the License is
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// distributed on an "AS IS" basis, without warranty of any kind, and the
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// Initial Developer hereby disclaims all such warranties, including without
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// limitation, any warranties of merchantability, fitness for a particular
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// purpose or non-infringement. Please see the License for the specific terms
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// and conditions governing the rights and limitations under the License.
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#include <Message_ProgressScale.ixx>
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static const Standard_Real ZERO = 1e-10;
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static const Standard_Real INFINITE = 1e100;
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//=======================================================================
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//function : Message_ProgressScale
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//purpose :
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//=======================================================================
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Message_ProgressScale::Message_ProgressScale () :
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myMin(0.), myMax(100.), myStep(1.), myInfinite(Standard_False),
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myFirst(0.), myLast(1.)
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{
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}
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//=======================================================================
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//function : LocalToBase
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//purpose :
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//=======================================================================
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Standard_Real Message_ProgressScale::LocalToBase (const Standard_Real val) const
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{
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if ( val <= myMin ) return myFirst;
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if ( myMax - myMin <= ZERO ) return myLast;
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if ( ! myInfinite ) {
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if ( val >= myMax ) return myLast;
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return myFirst + ( myLast - myFirst ) * ( val - myMin ) / ( myMax - myMin );
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}
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Standard_Real x = ( val - myMin ) / ( myMax - myMin );
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// return myFirst + ( myLast - myFirst ) * ( 1. - exp ( -x ) ); // exponent
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return myFirst + ( myLast - myFirst ) * x / ( 1. + x ); // hyperbola
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}
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//=======================================================================
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//function : BaseToLocal
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//purpose :
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//=======================================================================
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Standard_Real Message_ProgressScale::BaseToLocal (const Standard_Real val) const
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{
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if ( myLast - val <= ZERO )
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return myInfinite ? INFINITE : myMax;
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if ( ! myInfinite )
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return myMin + ( myMax - myMin ) * ( val - myFirst ) / ( myLast - myFirst );
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// Standard_Real x = log ( ( val - myFirst ) / ( myLast - val ) ); // exponent
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Standard_Real x = ( val - myFirst ) / ( myLast - val ); // hyperbola
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return myMin + x * ( myMax - myMin );
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}
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