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/*               Copyright 1998-2002 by Ullrich Koethe                  */
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#ifndef VIGRA_BORDERTREATMENT_HXX
#define VIGRA_BORDERTREATMENT_HXX

namespace vigra {


/** \page BorderTreatmentMode BorderTreatmentMode

    Choose between different border treatment modes. In the convolution
    algorithms, these modes apply to
    all image pixels where the kernel does not completely fit inside
    the image.

    <b>\#include</b> \<vigra/bordertreatment.hxx\><br>
    Namespace: vigra

    \code
    enum BorderTreatmentMode
    {
          // do not operate on a pixel where the kernel does
          // not fit in the image
       BORDER_TREATMENT_AVOID,

          // clip kernel at image border (this is only useful if the
          //  kernel is >= 0 everywhere)
       BORDER_TREATMENT_CLIP,

          // repeat the nearest valid pixel
       BORDER_TREATMENT_REPEAT,

          // reflect image at last row/column
       BORDER_TREATMENT_REFLECT,

          // wrap image around (periodic boundary conditions)
       BORDER_TREATMENT_WRAP

          // assume that all outside points have value zero
       BORDER_TREATMENT_ZEROPAD
    };
    \endcode
*/
enum BorderTreatmentMode
{
   BORDER_TREATMENT_AVOID,
   BORDER_TREATMENT_CLIP,
   BORDER_TREATMENT_REPEAT,
   BORDER_TREATMENT_REFLECT,
   BORDER_TREATMENT_WRAP,
   BORDER_TREATMENT_ZEROPAD
};

} // namespace vigra

#endif // VIGRA_BORDERTREATMENT_HXX
