eoTruncSelect.h

//-----------------------------------------------------------------------------

#ifndef _eoTruncSelect_h
#define _eoTruncSelect_h


//-----------------------------------------------------------------------------
#include <eoSelect.h>
#include <utils/eoHowMany.h>
#include <math.h>
//-----------------------------------------------------------------------------

template<class EOT>
class eoTruncSelect : public eoSelect<EOT>
{
 public:
  eoTruncSelect(eoSelectOne<EOT>& _select, eoHowMany _howMany)
    : select(_select), howMany(_howMany) {}

  virtual void operator()(const eoPop<EOT>& _source, eoPop<EOT>& _dest)
  {
    unsigned target = howMany(_source.size());

    _dest.resize(target);

    select.setup(_source);

    for (size_t i = 0; i < _dest.size(); ++i)
      _dest[i] = select(_source);
  }

private :
  eoSelectOne<EOT>& select;
  eoHowMany howMany;
};

#endif