ConvolveGridder.h

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//# ConvolveGridder.h: Definition for Convolutional Gridder
//# Copyright (C) 1996,1997,1999,2003
//# Associated Universities, Inc. Washington DC, USA.
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//# This library is free software; you can redistribute it and/or modify it
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//# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
//# License for more details.
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//# $Id: ConvolveGridder.h 21024 2011-03-01 11:46:18Z gervandiepen $

#ifndef SCIMATH_CONVOLVEGRIDDER_H
#define SCIMATH_CONVOLVEGRIDDER_H

#include <scimath/Mathematics/Gridder.h>
#include <casa/BasicSL/String.h>

namespace casa { //# NAMESPACE CASA - BEGIN

// <summary>
// Does convolutional gridding
// </summary>

template <class Domain, class Range>
class ConvolveGridder : public Gridder<Domain, Range>
{
public:

  ConvolveGridder(const IPosition& shape, const Vector<Domain>& scale,
                  const Vector<Domain>& offset, const String& convType="SF");

  virtual void setConvolutionFunction(const String& type);

  virtual ~ConvolveGridder() {}

  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);

  Vector<Double>& cFunction();

  Vector<Int>& cSupport();

  Int& cSampling();

protected:
  virtual Range correctionFactor1D(Int loc, Int len);

private:
  Vector<Double> convFunc;
  Vector<Int> supportVec;
  Vector<Int> loc;
  Int sampling;
  Int support;
  String cType;

public:
  using Gridder<Domain,Range>::onGrid;
protected:
  //# Make members of parent classes known.
  using Gridder<Domain,Range>::ndim;
  using Gridder<Domain,Range>::shape;
  using Gridder<Domain,Range>::scale;
  using Gridder<Domain,Range>::offset;
  using Gridder<Domain,Range>::posVec;
  using Gridder<Domain,Range>::locVec;
  using Gridder<Domain,Range>::shapeVec;
  using Gridder<Domain,Range>::zeroShapeVec;
  using Gridder<Domain,Range>::offsetVec;
  using Gridder<Domain,Range>::centerVec;
  using Gridder<Domain,Range>::fillCorrectionVectors;
};

} //# NAMESPACE CASA - END

#ifndef CASACORE_NO_AUTO_TEMPLATES
#include <scimath/Mathematics/ConvolveGridder.tcc>
#endif //# CASACORE_NO_AUTO_TEMPLATES
#endif