LatticeStatsDataProviderBase.h

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//# Copyright (C) 2000,2001
//# 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
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//# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
//# License for more details.
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//# $Id: Array.h 21545 2015-01-22 19:36:35Z gervandiepen $

#ifndef LATTICES_LATTICESTATSDATAPROVIDERBASE_H
#define LATTICES_LATTICESTATSDATAPROVIDERBASE_H

#include <casacore/scimath/Mathematics/StatsDataProvider.h>

#include <casacore/scimath/Mathematics/NumericTraits.h>
#include <casacore/lattices/Lattices/LatticeIterator.h>
#include <casacore/lattices/LatticeMath/LattStatsProgress.h>

#include <casacore/casa/aips.h>

namespace casacore {

class LatticeProgress;

// Abstract base class of data providers which allows stats framework to iterate through a lattice.

template <class T> class LatticeStatsDataProviderBase
        : public StatsDataProvider<typename NumericTraits<T>::PrecisionType, const T*, const Bool*> {

public:

        //typedef typename NumericTraits<T>::PrecisionType AccumType;

        virtual ~LatticeStatsDataProviderBase();

        // estimated number of steps to iterate through the the lattice
        virtual uInt estimatedSteps() const = 0;

        virtual void finalize();

        // Get the stride for the current mask (only called if hasMask() returns True).
        uInt getMaskStride();

        // Get the associated range(s) of the current dataset. Only called if hasRanges() returns True;
        std::vector<std::pair<typename NumericTraits<T>::PrecisionType, typename NumericTraits<T>::PrecisionType> > getRanges();

        // Get the stride for the current data set.
        uInt getStride();

        // Returns NULL; lattices do not have associated weights.
        const T* getWeights();

        // Does the current data set have associated range(s)?
        Bool hasRanges() const;

        // returns False; lattices do not have associated weights.
        Bool hasWeights() const;

        // If the associated data set has ranges, are these include (return True) or
        // exclude (return False) ranges?
        Bool isInclude() const;

        // get the positions of the min and max
        void minMaxPos(IPosition& minpos, IPosition& maxpos) const;

        virtual void reset();

        void setProgressMeter(CountedPtr<LattStatsProgress> pm);

        // set the data ranges
        void setRanges(
                const std::vector<std::pair<typename NumericTraits<T>::PrecisionType, typename NumericTraits<T>::PrecisionType> >& ranges,
                Bool isInclude
        );

protected:
        LatticeStatsDataProviderBase();

        //virtual uInt _nsteps() const = 0;

        void _updateMaxPos(const IPosition& maxPos) { _maxPos = maxPos; }

        void _updateMinPos(const IPosition& minPos) { _minPos = minPos; }

        void _updateProgress();

private:
        Bool _hasRanges, _isInclude;
        std::vector<std::pair<typename NumericTraits<T>::PrecisionType, typename NumericTraits<T>::PrecisionType> > _ranges;
        CountedPtr<LattStatsProgress> _progressMeter;
        IPosition _minPos, _maxPos;
};

}

#ifndef CASACORE_NO_AUTO_TEMPLATES
#include <casacore/lattices/LatticeMath/LatticeStatsDataProviderBase.tcc>
#endif //# CASACORE_NO_AUTO_TEMPLATES

#endif