/usr/include/casacore/casa/Arrays/ExtendSpecifier.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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 | //# ExtendSpecifier.h: Specification of new and stretched lattice axes
//# Copyright (C) 2001
//# 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: aips2-request@nrao.edu.
//# Postal address: AIPS++ Project Office
//# National Radio Astronomy Observatory
//# 520 Edgemont Road
//# Charlottesville, VA 22903-2475 USA
//#
//#
//# $Id$
#ifndef CASA_EXTENDSPECIFIER_H
#define CASA_EXTENDSPECIFIER_H
//# Includes
#include <casacore/casa/aips.h>
#include <casacore/casa/Arrays/IPosition.h>
namespace casacore { //# NAMESPACE CASACORE - BEGIN
//# Forward Declarations
class Slicer;
template<class T> class Block;
// <summary>
// Specification of new and stretched lattice axes
// </summary>
// <use visibility=local>
// <reviewed reviewer="" date="yyyy/mm/dd" tests="tExtendSpecifier.cc" demos="">
// </reviewed>
// <prerequisite>
// <li> <linkto class="IPosition">IPosition</linkto>
// </prerequisite>
// <synopsis>
// ExtendSpecifier is a class internally used by class
// <linkto class=ExtendLattice>ExtendLattice</linkto>.
// It holds the information which axes are stretched and which axes
// are new. Note that a stretched axis has to have length 1 in the
// original shape.
// <p>
// The class only contains the functionality needed by ExtendLattice.
// which are (mainly) 2 conversion functions. One function converts
// a slicer from the extended lattice to the original lattice, so
// ExtendLattice can read the correct data.
// The other function converts a shape in the original lattice to the
// shape in the extended lattice.
// <br>Some data is precalculated for more efficient processing
// of the conversion of slicers and shapes.
// </synopsis>
// <example>
// <srcblock>
// IPosition oldShape(4,10,1,3,1);
// IPosition newShape(5,10,1,5,3,8);
// ExtendSpecifier spec (oldShape, newShape, IPosition(1,2), IPosition(1,4));
// </srcblock>
// This example extends the old shape to the new shape.
// <br>The 3rd argument tells that axes 2 is new. The newShape tells that
// its length will be 5. Note that adding this axis means that axes 2
// in the old shape will get axes 3 in the new shape.
// <br>The 4th argument tells that axes 4 (in the new shape!!) is stretched
// (to 8 according to newShape).
// </example>
//# <todo asof="yyyy/mm/dd">
//# </todo>
class ExtendSpecifier
{
public:
// Default constructor generates empty IPositions.
ExtendSpecifier();
// Tell if no or all degenerate axes have to be removed.
ExtendSpecifier (const IPosition& oldShape,
const IPosition& newShape,
const IPosition& newAxes,
const IPosition& stretchAxes);
// Copy constructor (copy semantics).
ExtendSpecifier(const ExtendSpecifier& other);
~ExtendSpecifier();
// Assignment (copy semantics).
// This and that do not have to have the same length.
ExtendSpecifier& operator= (const ExtendSpecifier& other);
// Return the new shape.
const IPosition& newShape() const
{ return itsNewShape; }
// Return the new axes.
const IPosition& newAxes() const
{ return itsNewAxes; }
// Return the axes to be stretched.
const IPosition& stretchAxes() const
{ return itsStretchAxes; }
// Return the old shape.
const IPosition& oldShape() const
{ return itsOldShape; }
// Return the axes to be extended (i.e. new and stretch axes).
const IPosition& extendAxes() const
{ return itsExtendAxes; }
// Return the old axes (i.e. axes new nor stretched) as in old shape.
const IPosition& oldOldAxes() const
{ return itsOldOldAxes; }
// Return the old axes as in new shape.
const IPosition& oldNewAxes() const
{ return itsOldNewAxes; }
// Convert the slicer to the specification for the old shape.
// It fills <src>shape</src> with the shape to reform the section
// length such that it contains the new axes.
Slicer convert (IPosition& shape, const Slicer& section) const;
// Convert a shape to the specification for the new shape.
IPosition convertNew (const IPosition& oldShape) const;
private:
// Fill the flags for the given axes.
// It throws an exception if the axis is invalid or multiply given.
void fill (Block<Bool>& flags, const IPosition& axes) const;
IPosition itsOldShape;
IPosition itsNewShape;
IPosition itsNewAxes;
IPosition itsStretchAxes;
IPosition itsExtendAxes;
IPosition itsOldOldAxes;
IPosition itsOldNewAxes;
};
} //# NAMESPACE CASACORE - END
#endif
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