threshold.h

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 */
 
/*
 *  Threshold operators
 */
#ifndef AIMS_UTILITY_THRESHOLD_H
#define AIMS_UTILITY_THRESHOLD_H
 
#include <iostream>
#include <limits>
#include <functional>
 
#include <aims/config/aimsdata_config.h>
#include <cartodata/volume/volume.h>
#include <aims/mesh/texture.h>
 
 
enum threshold_t
{
  AIMS_LOWER_THAN,
  AIMS_LOWER_OR_EQUAL_TO,
  AIMS_GREATER_THAN,
  AIMS_GREATER_OR_EQUAL_TO,
  AIMS_EQUAL_TO,
  AIMS_DIFFER,
  AIMS_BETWEEN,
  AIMS_OUTSIDE, 
  AIMS_BETWEEN_EXCLUDE_LOWER_BOUND, 
  AIMS_BETWEEN_EXCLUDE_HIGHER_BOUND, 
  AIMS_BETWEEN_EXCLUDE_BOUNDS, 
  AIMS_OUTSIDE_INCLUDE_LOWER_BOUND, 
  AIMS_OUTSIDE_INCLUDE_HIGHER_BOUND, 
  AIMS_OUTSIDE_INCLUDE_BOUNDS, 
};
 
template <class T,class U>
class AimsThreshold
{
public:
  inline AimsThreshold( threshold_t type,T level,T level2 = 0, 
                        T backgd = 0, 
                        U foregd = (U)(!std::numeric_limits<U>::is_specialized 
                                      || (std::numeric_limits<U>::max() >= 32767)
                                      ? 32767 : std::numeric_limits<U>::max() ) );
  virtual ~AimsThreshold() {}
 
  inline carto::VolumeRef<T> operator () (const carto::VolumeRef<T> &sqv);
  inline carto::VolumeRef<T> clip(const carto::VolumeRef<T> &sqv);
  inline carto::VolumeRef<U> bin(const carto::VolumeRef<T> &sqv);
 
protected:
  threshold_t _type;
  T    _level;
  T    _level2;
  T    _backgd;
  U    _foregd;
};
 
template <class T,class U>
class AimsTexThreshold
{
public:
  inline AimsTexThreshold( threshold_t type,T level,T level2=0, T backgd = 0 );
  virtual ~AimsTexThreshold() {}
 
  inline TimeTexture<T> operator () (const TimeTexture<T> &sqv);
  inline TimeTexture<U> bin(const TimeTexture<T> &sqv);
 
protected:
  threshold_t _type;
  T    _level;
  T    _level2;
  T    _backgd;
};
 
template <class T,class U> inline
AimsThreshold<T,U>::AimsThreshold( threshold_t type, T level, T level2, 
                                   T backgd, U foregd )
  : _type( type ), _level( level ), _level2( level2 ), _backgd( backgd ), _foregd( foregd )
{
}
 
template <class T,class U> inline
AimsTexThreshold<T,U>::AimsTexThreshold( threshold_t type,T level,T level2, 
                                         T backgd )
  : _type( type ), _level( level ), _level2( level2 ), _backgd( backgd )
{
}
 
namespace internal
{
 
  template <typename LEFT, typename OP>
  struct thresh1: public std::unary_function<LEFT, LEFT>
  {
    thresh1( LEFT threshold, LEFT background )
      : std::unary_function<LEFT, LEFT>(), threshold( threshold ),
        background( background )
    {
    }
 
    LEFT operator() (const LEFT & x) const
    {
      return OP()( x, threshold ) ? x : background;
    }
 
    LEFT threshold;
    LEFT background;
  };
 
 
  template <typename T>
  struct between_with_bounds
  {
    bool operator() (const T & x, const T & y, const T & z) const
    {
      return x >= y && x <= z;
    }
  };
 
 
  template <typename T>
  struct between_with_upper_bound
  {
    bool operator() (const T & x, const T & y, const T & z) const
    {
      return x > y && x <= z;
    }
  };
 
 
  template <typename T>
  struct between_with_lower_bound
  {
    bool operator() (const T & x, const T & y, const T & z) const
    {
      return x >= y && x < z;
    }
  };
 
 
  template <typename T>
  struct between_without_bounds
  {
    bool operator() (const T & x, const T & y, const T & z) const
    {
      return x > y && x < z;
    }
  };
 
 
  template <typename T>
  struct outside_with_bounds
  {
    bool operator() (const T & x, const T & y, const T & z) const
    {
      return x <= y || x >= z;
    }
  };
 
 
  template <typename T>
  struct outside_with_upper_bound
  {
    bool operator() (const T & x, const T & y, const T & z) const
    {
      return x < y || x >= z;
    }
  };
 
 
  template <typename T>
  struct outside_with_lower_bound
  {
    bool operator() (const T & x, const T & y, const T & z) const
    {
      return x <= y || x > z;
    }
  };
 
 
  template <typename T>
  struct outside_without_bounds
  {
    bool operator() (const T & x, const T & y, const T & z) const
    {
      return x < y || x > z;
    }
  };
 
 
  template <typename LEFT, typename OP>
  struct thresh2: public std::unary_function<LEFT, LEFT>
  {
    thresh2( LEFT threshold1, LEFT threshold2, LEFT background )
      : std::unary_function<LEFT, LEFT>(), threshold1( threshold1 ),
        threshold2( threshold2), background( background )
    {
    }
 
    LEFT operator() (const LEFT & x) const
    {
      return OP()( x, threshold1, threshold2 ) ? x : background;
    }
 
    LEFT threshold1;
    LEFT threshold2;
    LEFT background;
  };
 
}
 
template <class T,class U> inline
carto::VolumeRef<T> AimsThreshold<T,U>::operator () (const carto::VolumeRef<T> &sqv)
{
  carto::VolumeRef<T> res( sqv.getSize(), sqv.getBorders() );
  res.setVoxelSize( sqv.getVoxelSize() );
 
  res = T( 0 );
 
  switch (_type)
  { case AIMS_LOWER_THAN :
      carto::volumeutil::applyTowards(
        *sqv, *res,
        ::internal::thresh1<T, carto::volumeutil::less<T> >( _level, _backgd ) );
      break;
    case AIMS_LOWER_OR_EQUAL_TO :
      carto::volumeutil::applyTowards(
        *sqv, *res,
        ::internal::thresh1<T, carto::volumeutil::less_equal<T> >( _level,
                                                                 _backgd ) );
      break;
    case AIMS_GREATER_THAN :
      carto::volumeutil::applyTowards(
        *sqv, *res,
        ::internal::thresh1<T, carto::volumeutil::greater<T> >( _level,
                                                              _backgd ) );
      break;
    case AIMS_GREATER_OR_EQUAL_TO :
      carto::volumeutil::applyTowards(
        *sqv, *res,
        ::internal::thresh1<T, carto::volumeutil::greater_equal<T> >(
          _level, _backgd ) );
      break;
    case AIMS_EQUAL_TO :
      carto::volumeutil::applyTowards(
        *sqv, *res,
        ::internal::thresh1<T, carto::volumeutil::equal_to<T> >(
          _level, _backgd ) );
      break;
    case AIMS_DIFFER :
      carto::volumeutil::applyTowards(
        *sqv, *res,
        ::internal::thresh1<T, carto::volumeutil::not_equal_to<T> >(
          _level, _backgd ) );
      break;
    case AIMS_BETWEEN :
      carto::volumeutil::applyTowards(
        *sqv, *res,
        ::internal::thresh2<T, ::internal::between_with_bounds<T> >(
          _level, _level2, _backgd ) );
      break;
    case AIMS_BETWEEN_EXCLUDE_LOWER_BOUND :
      carto::volumeutil::applyTowards(
        *sqv, *res,
        ::internal::thresh2<T, ::internal::between_with_upper_bound<T> >(
          _level, _level2, _backgd ) );
      break;
    case AIMS_BETWEEN_EXCLUDE_HIGHER_BOUND :
      carto::volumeutil::applyTowards(
        *sqv, *res,
        ::internal::thresh2<T, ::internal::between_with_lower_bound<T> >(
          _level, _level2, _backgd ) );
      break;
    case AIMS_BETWEEN_EXCLUDE_BOUNDS :
      carto::volumeutil::applyTowards(
        *sqv, *res,
        ::internal::thresh2<T, ::internal::between_without_bounds<T> >(
          _level, _level2, _backgd ) );
      break;
    case AIMS_OUTSIDE :
      carto::volumeutil::applyTowards(
        *sqv, *res,
        ::internal::thresh2<T, ::internal::outside_without_bounds<T> >(
          _level, _level2, _backgd ) );
      break;
    case AIMS_OUTSIDE_INCLUDE_LOWER_BOUND :
      carto::volumeutil::applyTowards(
        *sqv, *res,
        ::internal::thresh2<T, ::internal::outside_with_lower_bound<T> >(
          _level, _level2, _backgd ) );
      break;
    case AIMS_OUTSIDE_INCLUDE_HIGHER_BOUND :
      carto::volumeutil::applyTowards(
        *sqv, *res,
        ::internal::thresh2<T, ::internal::outside_with_upper_bound<T> >(
          _level, _level2, _backgd ) );
      break;
    case AIMS_OUTSIDE_INCLUDE_BOUNDS :
      carto::volumeutil::applyTowards(
        *sqv, *res,
        ::internal::thresh2<T, ::internal::outside_with_bounds<T> >(
          _level, _level2, _backgd ) );
      break;
  }
 
  res.copyHeaderFrom( sqv.header() );
  return(res);
}
 
namespace internal
{
 
  template <typename LEFT, typename OP>
  struct clip1: public std::unary_function<LEFT, LEFT>
  {
    clip1( LEFT threshold )
      : std::unary_function<LEFT, LEFT>(), threshold( threshold )
    {
    }
 
    LEFT operator() (const LEFT & x) const
    {
      return OP()( x, threshold ) ? x : threshold;
    }
 
    LEFT threshold;
  };
 
 
  template <typename T>
  struct rel_between_with_bounds
  {
    int operator() (const T & x, const T & y, const T & z) const
    {
      if( x < y )
        return -1;
      return x <= z ? 0 : 1;
    }
  };
 
 
  template <typename T>
  struct rel_between_with_lower_bound
  {
    int operator() (const T & x, const T & y, const T & z) const
    {
      if( x <= y )
        return -1;
      return x <= z ? 0 : 1;
    }
  };
 
 
  template <typename T>
  struct rel_between_with_upper_bound
  {
    int operator() (const T & x, const T & y, const T & z) const
    {
      if( x < y )
        return -1;
      return x < z ? 0 : 1;
    }
  };
 
 
  template <typename T>
  struct rel_between_without_bounds
  {
    int operator() (const T & x, const T & y, const T & z) const
    {
      if( x <= y )
        return -1;
      return x < z ? 0 : 1;
    }
  };
 
 
  template <typename LEFT, typename OP>
  struct clip2: public std::unary_function<LEFT, LEFT>
  {
    clip2( LEFT threshold1, LEFT threshold2 )
      : std::unary_function<LEFT, LEFT>(), threshold1( threshold1 ),
        threshold2( threshold2)
    {
    }
 
    LEFT operator() (const LEFT & x) const
    {
      switch( OP()( x, threshold1, threshold2 ) )
      {
        case -1:
          return threshold1;
        case 0:
          return x;
        case 1:
          return threshold2;
      }
      return x; // should not happen, just avoids a warning.
    }
 
    LEFT threshold1;
    LEFT threshold2;
  };
 
}
 
template <class T,class U> inline
carto::VolumeRef<T> AimsThreshold<T,U>::clip (const carto::VolumeRef<T> &sqv)
{
  carto::VolumeRef<T> res( sqv.getSize(), sqv.getBorders() );
  res.setVoxelSize( sqv.getVoxelSize() );
 
  res = T( 0 );
 
  typename carto::VolumeRef<T>::iterator       it1;
  typename carto::VolumeRef<T>::const_iterator it2;
 
  switch (_type)
  { case AIMS_LOWER_THAN :
      carto::volumeutil::applyTowards(
        *sqv, *res,
        ::internal::clip1<T, carto::volumeutil::less<T> >( _level ) );
      break;
    case AIMS_LOWER_OR_EQUAL_TO :
      carto::volumeutil::applyTowards(
        *sqv, *res,
        ::internal::clip1<T, carto::volumeutil::less_equal<T> >( _level ) );
      break;
    case AIMS_GREATER_THAN :
      carto::volumeutil::applyTowards(
        *sqv, *res,
        ::internal::clip1<T, carto::volumeutil::greater<T> >( _level ) );
      break;
    case AIMS_GREATER_OR_EQUAL_TO :
      carto::volumeutil::applyTowards(
        *sqv, *res,
        ::internal::clip1<T, carto::volumeutil::greater_equal<T> >( _level ) );
      break;
    case AIMS_BETWEEN :
      carto::volumeutil::applyTowards(
        *sqv, *res,
        ::internal::clip2<T, ::internal::rel_between_with_bounds<T> >(
          _level, _level2 ) );
      break;
    case AIMS_BETWEEN_EXCLUDE_LOWER_BOUND :
      carto::volumeutil::applyTowards(
        *sqv, *res,
        ::internal::clip2<T, ::internal::rel_between_with_upper_bound<T> >(
          _level, _level2 ) );
      break;
    case AIMS_BETWEEN_EXCLUDE_HIGHER_BOUND :
      carto::volumeutil::applyTowards(
        *sqv, *res,
        ::internal::clip2<T, ::internal::rel_between_with_lower_bound<T> >(
          _level, _level2 ) );
      break;
    case AIMS_BETWEEN_EXCLUDE_BOUNDS :
      carto::volumeutil::applyTowards(
        *sqv, *res,
        ::internal::clip2<T, ::internal::rel_between_without_bounds<T> >(
          _level, _level2 ) );
      break;
    case AIMS_OUTSIDE :
    case AIMS_OUTSIDE_INCLUDE_LOWER_BOUND :
    case AIMS_OUTSIDE_INCLUDE_HIGHER_BOUND :
    case AIMS_OUTSIDE_INCLUDE_BOUNDS :
    case AIMS_EQUAL_TO :
    case AIMS_DIFFER :
      // Clipping has no real meaning in those cases, thus we do standard
      // thresholding instead.
      std::cerr << "Warning: AimsThreshold cannot use clipping with this mode, "
        "using standard clipping instead." << std::endl;
      return (*this)(sqv);
  }
 
  res.copyHeaderFrom( sqv.header() );
  return(res);
}
 
template <class T,class U> inline
TimeTexture<T> AimsTexThreshold<T,U>::operator () (const TimeTexture<T> &sqv)
{
 
  unsigned i, n = sqv.nItem(), t , tm = sqv.size();
  TimeTexture<T> res = sqv;
 
  switch (_type)
    { case AIMS_LOWER_THAN : 
        for (t = 0; t < tm ; ++t)
          for (i = 0; i < n ; ++i)
            res.item( i )  = ( res[t].item( i ) < _level ? res[t].item( i ) 
                               : _backgd);
        break;
    case AIMS_LOWER_OR_EQUAL_TO : 
      for (t = 0; t < tm ; ++t)
        for (i = 0; i < n ; ++i)
          res.item( i )  = ( res[t].item( i ) <= _level ?  res[t].item( i ) 
                             : _backgd);
      break;
    case AIMS_GREATER_THAN : 
      for (t = 0; t < tm ; ++t)
        for (i = 0; i < n ; ++i)
          res.item( i )  = ( res[t].item( i ) > _level ?  res[t].item( i ) 
                             : _backgd);
      break;
    case AIMS_GREATER_OR_EQUAL_TO : 
      for (t = 0; t < tm ; ++t)
        for (i = 0; i < n ; ++i)
          res.item( i )  = ( res[t].item( i ) >= _level ?  res[t].item( i ) 
                             : _backgd);
      break;
    case AIMS_EQUAL_TO : 
      for (t = 0; t < tm ; ++t)
        for (i = 0; i < n ; ++i)
          res.item( i )  = ( res[t].item( i ) == _level ?  res[t].item( i ) 
                             : _backgd);
      break;
    case AIMS_DIFFER : 
      for (t = 0; t < tm ; ++t)
        for (i = 0; i < n ; ++i)
          res.item( i )  = ( res[t].item( i ) != _level ?  res[t].item( i ) 
                             : _backgd);
      break;
    case AIMS_BETWEEN : 
      for (t = 0; t < tm ; ++t)
        for (i = 0; i < n ; ++i)
          res.item( i )  = ( res[t].item( i ) >= _level && res[t].item( i ) 
                             <= _level2 ?  res[t].item( i ) : _backgd);
      break;
    case AIMS_BETWEEN_EXCLUDE_LOWER_BOUND : 
      for (t = 0; t < tm ; ++t)
        for (i = 0; i < n ; ++i)
          res.item( i )  = ( res[t].item( i ) > _level && res[t].item( i ) 
                             <= _level2 ?  res[t].item( i ) : _backgd);
      break;
    case AIMS_BETWEEN_EXCLUDE_HIGHER_BOUND : 
      for (t = 0; t < tm ; ++t)
        for (i = 0; i < n ; ++i)
          res.item( i )  = ( res[t].item( i ) > _level && res[t].item( i ) 
                             < _level2 ?  res[t].item( i ) : _backgd);
      break;
    case AIMS_BETWEEN_EXCLUDE_BOUNDS : 
      for (t = 0; t < tm ; ++t)
        for (i = 0; i < n ; ++i)
          res.item( i )  = ( res[t].item( i ) > _level && res[t].item( i ) 
                             < _level2 ?  res[t].item( i ) : _backgd);
      break;
    case AIMS_OUTSIDE : 
      for (t = 0; t < tm ; ++t)
        for (i = 0; i < n ; ++i)
          res.item( i )  = ( res[t].item( i ) < _level || res[t].item( i ) 
                             > _level2 ? (U) res[t].item( i ) : _backgd);
      break;
    case AIMS_OUTSIDE_INCLUDE_LOWER_BOUND : 
      for (t = 0; t < tm ; ++t)
        for (i = 0; i < n ; ++i)
          res.item( i )  = ( res[t].item( i ) <= _level || res[t].item( i ) 
                             > _level2 ? (U) res[t].item( i ) : _backgd);
      break;
    case AIMS_OUTSIDE_INCLUDE_HIGHER_BOUND : 
      for (t = 0; t < tm ; ++t)
        for (i = 0; i < n ; ++i)
          res.item( i )  = ( res[t].item( i ) < _level || res[t].item( i ) 
                             >= _level2 ? (U) res[t].item( i ) : _backgd);
      break;
    case AIMS_OUTSIDE_INCLUDE_BOUNDS : 
      for (t = 0; t < tm ; ++t)
        for (i = 0; i < n ; ++i)
          res.item( i )  = ( res[t].item( i ) <= _level || res[t].item( i ) 
                             >= _level2 ? (U) res[t].item( i ) : _backgd);
      break;
    }
 
  //No header for the texture yet...
  return(res);
}
 
namespace internal
{
 
  template <typename LEFT, typename RIGHT, typename OP>
  struct thresh1_bin: public std::unary_function<LEFT, RIGHT>
  {
    thresh1_bin( LEFT threshold, RIGHT foreground )
      : std::unary_function<LEFT, RIGHT>(), threshold( threshold ),
        foreground( foreground )
    {
    }
 
    RIGHT operator() (const LEFT & x) const
    {
      return OP()( x, threshold ) ? foreground : 0;
    }
 
    LEFT threshold;
    RIGHT foreground;
  };
 
 
  template <typename LEFT, typename RIGHT, typename OP>
  struct thresh2_bin: public std::unary_function<LEFT, RIGHT>
  {
    thresh2_bin( LEFT threshold1, LEFT threshold2, RIGHT foreground )
      : std::unary_function<LEFT, RIGHT>(), threshold1( threshold1 ),
        threshold2( threshold2 ), foreground( foreground )
    {
    }
 
    RIGHT operator() (const LEFT & x) const
    {
      return OP()( x, threshold1, threshold2 ) ? foreground : 0;
    }
 
    LEFT threshold1;
    LEFT threshold2;
    RIGHT foreground;
  };
 
}
 
template <class T,class U> inline
carto::VolumeRef<U> AimsThreshold<T,U>::bin(const carto::VolumeRef<T> &sqv)
{
  carto::VolumeRef<U> res( sqv.getSize(), sqv.getBorders() );
  res.setVoxelSize( sqv.getVoxelSize() );
 
  res = U( 0 );
 
  typename carto::VolumeRef<U>::iterator       it1;
  typename carto::VolumeRef<T>::const_iterator it2;
 
  switch (_type)
  {
 
    case AIMS_LOWER_THAN :
      carto::volumeutil::applyTowards(
        *sqv, *res,
        ::internal::thresh1_bin<T, U, carto::volumeutil::less<T> >(
          _level, _foregd ) );
      break;
    case AIMS_LOWER_OR_EQUAL_TO : 
      carto::volumeutil::applyTowards(
        *sqv, *res,
        ::internal::thresh1_bin<T, U, carto::volumeutil::less_equal<T> >(
          _level, _foregd ) );
      break;
    case AIMS_GREATER_THAN : 
      carto::volumeutil::applyTowards(
        *sqv, *res,
        ::internal::thresh1_bin<T, U, carto::volumeutil::greater<T> >(
          _level, _foregd ) );
      break;
    case AIMS_GREATER_OR_EQUAL_TO : 
      carto::volumeutil::applyTowards(
        *sqv, *res,
        ::internal::thresh1_bin<T, U, carto::volumeutil::greater_equal<T> >(
          _level, _foregd ) );
      break;
    case AIMS_EQUAL_TO :
      carto::volumeutil::applyTowards(
        *sqv, *res,
        ::internal::thresh1_bin<T, U, carto::volumeutil::equal_to<T> >(
          _level, _foregd ) );
      break;
    case AIMS_DIFFER :
      carto::volumeutil::applyTowards(
        *sqv, *res,
        ::internal::thresh1_bin<T, U, carto::volumeutil::not_equal_to<T> >(
          _level, _foregd ) );
      break;
    case AIMS_BETWEEN :
      carto::volumeutil::applyTowards(
        *sqv, *res,
        ::internal::thresh2_bin<T, U, ::internal::between_with_bounds<T> >(
          _level, _level2, _foregd ) );
      break;
    case AIMS_BETWEEN_EXCLUDE_LOWER_BOUND :
      carto::volumeutil::applyTowards(
        *sqv, *res,
        ::internal::thresh2_bin<T, U, ::internal::between_with_upper_bound<T> >(
          _level, _level2, _foregd ) );
      break;
    case AIMS_BETWEEN_EXCLUDE_HIGHER_BOUND :
      carto::volumeutil::applyTowards(
        *sqv, *res,
        ::internal::thresh2_bin<T, U, ::internal::between_with_lower_bound<T> >(
          _level, _level2, _foregd ) );
      break;
    case AIMS_BETWEEN_EXCLUDE_BOUNDS :
      carto::volumeutil::applyTowards(
        *sqv, *res,
        ::internal::thresh2_bin<T, U, ::internal::between_without_bounds<T> >(
          _level, _level2, _foregd ) );
      break;
    case AIMS_OUTSIDE :
      carto::volumeutil::applyTowards(
        *sqv, *res,
        ::internal::thresh2_bin<T, U, ::internal::outside_without_bounds<T> >(
          _level, _level2, _foregd ) );
      break;
    case AIMS_OUTSIDE_INCLUDE_LOWER_BOUND : 
      carto::volumeutil::applyTowards(
        *sqv, *res,
        ::internal::thresh2_bin<T, U, ::internal::outside_with_lower_bound<T> >(
          _level, _level2, _foregd ) );
      break;
    case AIMS_OUTSIDE_INCLUDE_HIGHER_BOUND : 
      carto::volumeutil::applyTowards(
        *sqv, *res,
        ::internal::thresh2_bin<T, U, ::internal::outside_with_upper_bound<T> >(
          _level, _level2, _foregd ) );
      break;
    case AIMS_OUTSIDE_INCLUDE_BOUNDS :
      carto::volumeutil::applyTowards(
        *sqv, *res,
        ::internal::thresh2_bin<T, U, ::internal::outside_with_bounds<T> >(
          _level, _level2, _foregd ) );
      break;
  }
 
  res.copyHeaderFrom( sqv.header() );
  return(res);
}
 
template <class T,class U> inline
TimeTexture<U> AimsTexThreshold<T,U>::bin(const TimeTexture<T> &sqv)
{
  unsigned i, n = sqv.nItem(), t , tm = sqv.size();
  TimeTexture<T> temp = sqv ;
  TimeTexture<U> res;
  
  switch (_type)
    { case AIMS_LOWER_THAN :     
        for (t = 0; t < tm ; ++t)
          for (i = 0; i < n ; ++i)
            if ( temp[t].item( i ) < _level) 
              res[t].push_back( 1 );
            else
              res[t].push_back( 0 );
        
        break;
    case AIMS_LOWER_OR_EQUAL_TO : 
      for (t = 0; t < tm ; ++t)
        for (i = 0; i < n ; ++i)
          if ( temp[t].item( i ) <= _level) 
            res[t].push_back( 1 );
          else
            res[t].push_back( 0 );
      break;
    case AIMS_GREATER_THAN : 
      for (t = 0; t < tm ; ++t)
        for (i = 0; i < n ; ++i)
          if ( temp[t].item( i ) > _level) 
            res[t].push_back( 1 );
          else
            res[t].push_back( 0 );
      break;
    case AIMS_GREATER_OR_EQUAL_TO : 
      for (t = 0; t < tm ; ++t)
        for (i = 0; i < n ; ++i)
          if ( temp[t].item( i ) >= _level) 
            res[t].push_back( 1 );
          else
            res[t].push_back( 0 );
      break;
    case AIMS_EQUAL_TO : 
      for (t = 0; t < tm ; ++t)
        for (i = 0; i < n ; ++i)
          if ( temp[t].item( i ) == _level) 
            res[t].push_back( 1 );
          else
            res[t].push_back( 0 );
      break;
    case AIMS_DIFFER : 
      for (t = 0; t < tm ; ++t)
        for (i = 0; i < n ; ++i)
          if ( temp[t].item( i ) != _level) 
            res[t].push_back( 1 );
          else
            res[t].push_back( 0 );
      break;
    case AIMS_BETWEEN : 
      for (t = 0; t < tm ; ++t)
        for (i = 0; i < n ; ++i)
          if ( temp[t].item( i ) >= _level 
               && temp[t].item( i ) <= _level2 ) 
            res[t].push_back( 1 );
          else
            res[t].push_back( 0 );
      break;
    case AIMS_BETWEEN_EXCLUDE_LOWER_BOUND : 
      for (t = 0; t < tm ; ++t)
        for (i = 0; i < n ; ++i)
          if ( temp[t].item( i ) > _level 
               && temp[t].item( i ) <= _level2 ) 
            res[t].push_back( 1 );
          else
            res[t].push_back( 0 );
      break;
    case AIMS_BETWEEN_EXCLUDE_HIGHER_BOUND : 
      for (t = 0; t < tm ; ++t)
        for (i = 0; i < n ; ++i)
          if ( temp[t].item( i ) >= _level 
               && temp[t].item( i ) < _level2 ) 
            res[t].push_back( 1 );
          else
            res[t].push_back( 0 );
      break;
    case AIMS_BETWEEN_EXCLUDE_BOUNDS : 
      for (t = 0; t < tm ; ++t)
        for (i = 0; i < n ; ++i)
          if ( temp[t].item( i ) > _level 
               && temp[t].item( i ) < _level2 ) 
            res[t].push_back( 1 );
          else
            res[t].push_back( 0 );
      break;
    case AIMS_OUTSIDE : 
      for (t = 0; t < tm ; ++t)
        for (i = 0; i < n ; ++i)
          if ( temp[t].item( i ) < _level 
               && temp[t].item( i ) > _level2 ) 
            res[t].push_back( 1 );
          else
            res[t].push_back( 0 );
      break;
    case AIMS_OUTSIDE_INCLUDE_LOWER_BOUND : 
      for (t = 0; t < tm ; ++t)
        for (i = 0; i < n ; ++i)
          if ( temp[t].item( i ) <= _level 
               && temp[t].item( i ) > _level2 ) 
            res[t].push_back( 1 );
          else
            res[t].push_back( 0 );
      break;
    case AIMS_OUTSIDE_INCLUDE_HIGHER_BOUND : 
      for (t = 0; t < tm ; ++t)
        for (i = 0; i < n ; ++i)
          if ( temp[t].item( i ) < _level 
               && temp[t].item( i ) >= _level2 ) 
            res[t].push_back( 1 );
          else
            res[t].push_back( 0 );
      break;
    case AIMS_OUTSIDE_INCLUDE_BOUNDS : 
      for (t = 0; t < tm ; ++t)
        for (i = 0; i < n ; ++i)
          if ( temp[t].item( i ) <= _level 
               && temp[t].item( i ) >= _level2 ) 
            res[t].push_back( 1 );
          else
            res[t].push_back( 0 );
      break;
    }
 
  //No header for the texture yet...
  return(res);
}
 
    
#endif