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/*
//
// Copyright 1997-2009 Torsten Rohlfing
//
// Copyright 2004-2009, 2014 SRI International
//
// This file is part of the Computational Morphometry Toolkit.
//
// http://www.nitrc.org/projects/cmtk/
//
// The Computational Morphometry Toolkit 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 3 of
// the License, or (at your option) any later version.
//
// The Computational Morphometry Toolkit 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 the Computational Morphometry Toolkit. If not, see
// <http://www.gnu.org/licenses/>.
//
// $Revision: 5436 $
//
// $LastChangedDate: 2018-12-10 19:01:20 -0800 (Mon, 10 Dec 2018) $
//
// $LastChangedBy: torstenrohlfing $
//
*/
#ifndef __cmtkNearestNeighborInterpolator_h_included_
#define __cmtkNearestNeighborInterpolator_h_included_
#include <cmtkconfig.h>
namespace
cmtk
{
/** \addtogroup Base */
//@{
namespace
Interpolators
{
/// NearestNeighbor interpolator.
class NearestNeighbor
{
public:
/// Size of the interpolation region in grid points to the left and right.
static const int RegionSizeLeftRight = 1;
/// Flag whether this interpolator is suitable for labels.
static const bool SuitableForLabels = true;
/// Get specific interpolation weight for relative coordinate.
static Types::Coordinate GetWeight( const int weight, const Types::Coordinate x )
{
switch (weight)
{
case 0:
return (x<=0.5) ? 1 : 0;
case 1:
return (x>0.5) ? 1 : 0;
default:
#ifdef DEBUG
std::cerr << "weight=" << weight << " shouldn't happen!" << std::endl;
exit( 1 );
#endif
break;
}
return 0;
}
};
} // namespace Interpolators
} // namespace cmtk
#endif
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