NNGridder.h

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// # NNGridder.h: Definition for Nearest Neighbour Gridder
// # Copyright (C) 1996,1997,1999
// # Associated Universities, Inc. Washington DC, USA.
// #
// # This library is free software; you can redistribute it and/or modify it
// # under the terms of the GNU Library General Public License as published by
// # the Free Software Foundation; either version 2 of the License, or (at your
// # option) any later version.
// #
// # This library 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 Library General Public
// # License for more details.
// #
// # You should have received a copy of the GNU Library General Public License
// # along with this library; if not, write to the Free Software Foundation,
// # Inc., 675 Massachusetts Ave, Cambridge, MA 02139, USA.
// #
// # Correspondence concerning AIPS++ should be addressed as follows:
// #        Internet email: casa-feedback@nrao.edu.
// #        Postal address: AIPS++ Project Office
// #                        National Radio Astronomy Observatory
// #                        520 Edgemont Road
// #                        Charlottesville, VA 22903-2475 USA
 
#ifndef SCIMATH_NNGRIDDER_H
#define SCIMATH_NNGRIDDER_H
 
#include <casacore/casa/aips.h>
#include <casacore/scimath/Mathematics/Gridder.h>
 
namespace casacore {  // # NAMESPACE CASACORE - BEGIN
 
// <summary>
// A non-negative gridding class
// </summary>
 
template <class Domain, class Range>
class NNGridder : public Gridder<Domain, Range> {
 public:
  NNGridder(const IPosition& shape, const Vector<Domain>& scale, const Vector<Domain>& offset);
 
  virtual ~NNGridder() {}
 
  virtual Bool grid(Array<Range>& gridded, const Vector<Domain>& position, const Range& value);
 
  virtual Bool degrid(const Array<Range>& gridded, const Vector<Domain>& position, Range& value);
 
 protected:
  virtual Range correctionFactor1D(Int loc, Int len);
 
  Vector<Int> loc;
 
 protected:
  // # Make members of parent classes known.
  using Gridder<Domain, Range>::ndim;
  using Gridder<Domain, Range>::offsetVec;
  using Gridder<Domain, Range>::fillCorrectionVectors;
  using Gridder<Domain, Range>::onGrid;
};
 
}  // namespace casacore
 
#ifndef CASACORE_NO_AUTO_TEMPLATES
#include <casacore/scimath/Mathematics/NNGridder.tcc>
#endif  // # CASACORE_NO_AUTO_TEMPLATES
#endif