#ifndef IPSUBRECTANGLE_HEADER
#define IPSUBRECTANGLE_HEADER 1
/////////////////////////////////////////////////////////
//! rcsid="$Id: SubRectangle.hh,v 1.3 2000/07/07 12:57:48 ees1cg Exp $"
//! file="amma/Image/IPStream/IPBasic/SubRectangle.hh"
//! lib=IP
//! docentry="default.Charles Galambos"
//! author="Charles Galambos"
//! date="04/07/2000"

#include "amma/DP/Process.hh"
#include "amma/Image.hh"
#include <assert.h>

//! userlevel=Develop
//: Get a sub rectangle.

template <class TypeT>
class IPSubRectangleBodyC
  : public DPProcessBodyC<ImageC<TypeT>,ImageC<TypeT> >
{
public:
  IPSubRectangleBodyC(const ImageRectangleC &ir)
    : srect(ir)
    {}
  //: Constructor.
  
  virtual ImageC<TypeT> Apply (const ImageC<TypeT> &im);
  //: Apply to image.
  // NB. The first 'len' applications will not be fully filtered.
  
protected:
  ImageRectangleC srect;
};

//! userlevel=Normal
//: Get a sub rectangle.

template <class TypeT>
class IPSubRectangleC
  : public DPProcessC<ImageC<TypeT>,ImageC<TypeT> >
{
public:
  IPSubRectangleC()
    {}
  //: Default constructor.
  // Creates an invalid handle.

  IPSubRectangleC(const ImageRectangleC &ir)
    : DPProcessC<ImageC<TypeT>,ImageC<TypeT> >(*new IPSubRectangleBodyC<TypeT>(ir))
    {}
  //: Constructor.
};

//////////////////////////////////////////////////////////////////////////////////////////

template <class TypeT>
ImageC<TypeT> IPSubRectangleBodyC<TypeT>::Apply (const ImageC<TypeT> &im) {
  return ImageC<TypeT>(im,srect);
}

#endif