CLIPNearest2D.h

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00001 //# CLIPNearest2D.h: Nearest neighbour interpolator for CurvedLattice2D
00002 //# Copyright (C) 2003
00003 //# Associated Universities, Inc. Washington DC, USA.
00004 //#
00005 //# This library is free software; you can redistribute it and/or modify it
00006 //# under the terms of the GNU Library General Public License as published by
00007 //# the Free Software Foundation; either version 2 of the License, or (at your
00008 //# option) any later version.
00009 //#
00010 //# This library is distributed in the hope that it will be useful, but WITHOUT
00011 //# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
00012 //# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
00013 //# License for more details.
00014 //#
00015 //# You should have receied a copy of the GNU Library General Public License
00016 //# along with this library; if not, write to the Free Software Foundation,
00017 //# Inc., 675 Massachusetts Ave, Cambridge, MA 02139, USA.
00018 //#
00019 //# Correspondence concerning AIPS++ should be addressed as follows:
00020 //#        Internet email: aips2-request@nrao.edu.
00021 //#        Postal address: AIPS++ Project Office
00022 //#                        National Radio Astronomy Observatory
00023 //#                        520 Edgemont Road
00024 //#                        Charlottesville, VA 22903-2475 USA
00025 //#
00026 //# $Id$
00027 
00028 #ifndef LATTICES_CLIPNEAREST2D_H
00029 #define LATTICES_CLIPNEAREST2D_H
00030 
00031 
00032 //# Includes
00033 #include <casacore/casa/aips.h>
00034 #include <casacore/lattices/LatticeMath/CLInterpolator2D.h>
00035 #include <casacore/casa/Arrays/AxesMapping.h>
00036 
00037 namespace casacore { //# NAMESPACE CASACORE - BEGIN
00038 
00039 //# Forward Declarations
00040 template<class T> class Lattice;
00041 
00042 
00043 // <summary>
00044 // Arbitrarily shaped 1-dim lattice crosscut
00045 // </summary>
00046 
00047 // <use visibility=export>
00048 
00049 // <reviewed reviewer="" date="" tests="tPixelCurve.cc">
00050 // </reviewed>
00051 
00052 // <prerequisite>
00053 //# Classes you should understand before using this one.
00054 //   <li> <linkto class=CLInterpolator2D>CLInterpolator2D</linkto>
00055 // </prerequisite>
00056 
00057 // <etymology>
00058 // CLIP means CLInterpolator (its base class).
00059 // The 2D means that interpolation in 2 dimensions needs to be done.
00060 // </etymology>
00061 
00062 // <synopsis>
00063 // CLIPNearest2D is a realisation of the abstract base class CLInterpolator2D.
00064 // This class interpolates in a very simple way by taking the nearest
00065 // neighbour.
00066 //
00067 // Note that the base class contains the lattice to be interpolated and
00068 // the axis to be used in the interpolation.
00069 // </synopsis>
00070 
00071 
00072 template<class T>
00073 class CLIPNearest2D: public CLInterpolator2D<T>
00074 {
00075 public:
00076   // Only default constructor is needed.
00077   // The set function in the base class defines the lattice and axes.
00078   CLIPNearest2D();
00079 
00080   // Make a copy of the object.
00081   virtual CLIPNearest2D<T>* clone() const;
00082 
00083   // Get the data for the given pixel points (on axis1 and axis2) and
00084   // the chunk in the other axes as given by the section.
00085   virtual void getData (Array<T>& buffer,
00086                         const Vector<Float>& x,
00087                         const Vector<Float>& y,
00088                         const Slicer& section);
00089 
00090   // Get the mask for the given pixel points (on axis1 and axis2) and
00091   // the chunk in the other axes as given by the section.
00092   virtual void getMask (Array<Bool>& buffer,
00093                         const Vector<Float>& x,
00094                         const Vector<Float>& y,
00095                         const Slicer& section);
00096 
00097   //# Make members of parent class known.
00098 protected:
00099   using CLInterpolator2D<T>::itsAxesMap;
00100   using CLInterpolator2D<T>::itsAxis1;
00101   using CLInterpolator2D<T>::itsAxis2;
00102   using CLInterpolator2D<T>::itsCurveAxis;
00103   using CLInterpolator2D<T>::itsIsRef;
00104   using CLInterpolator2D<T>::itsLatticePtr;
00105 };
00106 
00107 
00108 
00109 } //# NAMESPACE CASACORE - END
00110 
00111 #ifndef CASACORE_NO_AUTO_TEMPLATES
00112 #include <casacore/lattices/LatticeMath/CLIPNearest2D.tcc>
00113 #endif //# CASACORE_NO_AUTO_TEMPLATES
00114 #endif 
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