/usr/include/casacore/lattices/LatticeMath/CLInterpolator2D.h is in casacore-dev 2.2.0-2.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 | //# CLInterpolator2D.h: Abstract base class for interpolator used by CurvedLattice2D
//# Copyright (C) 2003
//# 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 receied 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: aips2-request@nrao.edu.
//# Postal address: AIPS++ Project Office
//# National Radio Astronomy Observatory
//# 520 Edgemont Road
//# Charlottesville, VA 22903-2475 USA
//#
//# $Id$
#ifndef LATTICES_CLINTERPOLATOR2D_H
#define LATTICES_CLINTERPOLATOR2D_H
//# Includes
#include <casacore/casa/aips.h>
#include <casacore/casa/Arrays/AxesMapping.h>
namespace casacore { //# NAMESPACE CASACORE - BEGIN
//# Forward Declarations
template<class T> class MaskedLattice;
// <summary>
// Abstract base class for interpolator used by CurvedLattice2D.
// </summary>
// <use visibility=local>
// <reviewed reviewer="" date="" tests="tCurvedLattice2D.cc">
// </reviewed>
// <prerequisite>
//# Classes you should understand before using this one.
// <li> <linkto class=CurvedLattice2D>CurvedLattice2D</linkto>
// </prerequisite>
// <etymology>
// The CL in CLInterpolator2D means CurvedLattice.
// The 2D means that interpolation in 2 dimensions needs to be done.
// </etymology>
// <synopsis>
// CurvedLattice2D needs lattice data which are not on exact grid points.
// Therefore some interpolation scheme is needed. The abstract base class
// CLInterpolation2D makes it possible for CurvedLattice2D to use any
// interpolation scheme.
// Currently the only derived class is
// <linkto class=CLIPNearest2D>CLIPNearest2D</linkto>
// <br>
// Apart from interpolating and returning data, a derived class also has to
// return a mask. For instance, in a possible derived class using
// 4-point interpolation, the interpolation scheme has to take the
// image mask into account, and make a mask for its output data (say that
// the output point is masked off if its 4 input points are masked off).
//
// This base class has some data members defining the lattice and the
// lattice axes to be interpolated. When these data members are set,
// the virtual function <src>preset</src> is called. A derived class
// can implement this function to do some precalculations, etc..
// </synopsis>
// <motivation>
// This class makes it possible to hide the interpolation to be used
// from the CurvedLattice2D class.
// </motivation>
template<class T>
class CLInterpolator2D
{
public:
CLInterpolator2D()
: itsLatticePtr(0) {;}
virtual ~CLInterpolator2D();
// Let a derived class make a copy of itself.
virtual CLInterpolator2D<T>* clone() const = 0;
// Set the internals to the values of the CurvedLattice using it.
// Note that only a copy of the lattice pointer is made.
// Thereafter the virtual function preset() is called to give a derived
// class the opportunity to do some initial work.
void set (MaskedLattice<T>* lattice,
const AxesMapping& axesMap,
uInt axis1, uInt axis2, uInt curveAxis);
// Get the data for the given pixel points (on axis1 and axis2) and
// the chunk in the other axes as given by the section.
// The Slicer is fixed and the buffer has the correct shape.
virtual void getData (Array<T>& buffer,
const Vector<Float>& x,
const Vector<Float>& y,
const Slicer& section) = 0;
// Get the mask for the given pixel points (on axis1 and axis2) and
// the chunk in the other axes as given by the section.
// The Slicer is fixed and the buffer has the correct shape.
virtual void getMask (Array<Bool>& buffer,
const Vector<Float>& x,
const Vector<Float>& y,
const Slicer& section) = 0;
protected:
// Copy constructor can only be used by derived classes.
CLInterpolator2D (const CLInterpolator2D<T>&);
// Assignment can only be used by derived classes.
CLInterpolator2D& operator= (const CLInterpolator2D<T>&);
// Let a derived class do some initial work after set is called.
// The default implementation does nothing.
virtual void preset();
MaskedLattice<T>* itsLatticePtr;
AxesMapping itsAxesMap;
uInt itsAxis1;
uInt itsAxis2;
uInt itsCurveAxis;
Bool itsIsRef; // True = lattice returns array reference
};
} //# NAMESPACE CASACORE - END
#ifndef CASACORE_NO_AUTO_TEMPLATES
#include <casacore/lattices/LatticeMath/CLInterpolator2D.tcc>
#endif //# CASACORE_NO_AUTO_TEMPLATES
#endif
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