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// This file is part of ff3d - http://www.freefem.org/ff3d
// Copyright (C) 2007 Driss Yakoubi
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2, or (at your option)
// any later version.
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software Foundation,
// Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
// $Id: SpectralConformTransformation.cpp,v 1.1 2007/04/29 19:20:35 yakoubix Exp $
#include <SpectralConformTransformation.hpp>
#include <Interval.hpp>
SpectralConformTransformation::
SpectralConformTransformation(const Interval& interval)
: __interval(interval)
{
;
}
SpectralConformTransformation::~
SpectralConformTransformation()
{
;
}
real_t SpectralConformTransformation::
operator()(const real_t& x) const
{
return (__interval.b()-__interval.a())/2 *x + (__interval.b()+__interval.a())/2;
}
real_t SpectralConformTransformation::
inverse(const real_t& x) const
{
return 2./(__interval.b()-__interval.a())*x - (__interval.b()+__interval.a())/(__interval.b()-__interval.a());
}
real_t SpectralConformTransformation::
inverseDeterminant() const
{
return 2./(__interval.b() -__interval.a());
}
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