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HxInOutGetPoints.h

/*
 *  Copyright (c) 2000, University of Amsterdam, The Netherlands.
 *  All rights reserved.
 *
 *  Author(s):
 *  Edo Poll (poll@wins.uva.nl)
 */

#ifndef HxInOutGetPoints_h
#define HxInOutGetPoints_h

#include "HxCategories.h"
#include "HxTagList.h"
#include "HxPointList.h"


template<class ArithT>
class HxInOutGetPoints
{
public:
    typedef HxTagPixOpOut       DirectionCategory;
    typedef HxTagTransVar       TransVarianceCategory;
    typedef HxTag1Phase         PhaseCategory;

                                    HxInOutGetPoints(HxTagList&, int, int, int);

    void                            doIt(const ArithT& v, int x, int y, int z);

    static HxString                 className();
private:
    HxPointListBackInserter         _ptIns;
    HxPointList&                    dummyList();
    HxPointListBackInserter&        dummyInserter();
};

template<class ArithT>
inline
HxInOutGetPoints<ArithT>::HxInOutGetPoints(HxTagList& tags, int, int, int)
    : _ptIns(*HxGetTag(tags, "pointInserter", &dummyInserter()))
{
}

template<class ArithT>
inline HxString
HxInOutGetPoints<ArithT>::className()
{
    static HxString theName("getPoints");
    return theName;
}

template<class ArithT>
inline void
HxInOutGetPoints<ArithT>::doIt(const ArithT& v, int x, int y, int z)
{
    if (HxScalarInt(v).x())
        *_ptIns++ = HxPoint(x, y, z);
}

template<class ArithT>
inline HxPointList&
HxInOutGetPoints<ArithT>::dummyList()
{
    static HxPointList theList;
    return theList;
}

template<class ArithT>
inline HxPointListBackInserter&
HxInOutGetPoints<ArithT>::dummyInserter()
{
    static HxPointListBackInserter theInserter(std::back_inserter(dummyList()));
    return theInserter;
}

#endif

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