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NAME

       UStencil - structured graphic displaying a bitmap

SYNOPSIS

       #include <Unidraw/Graphic/stencil.h>

DESCRIPTION

       A UStencil is a Graphic that displays a bitmapped image.  Two Bitmap objects, an image and
       a mask, define a stencil's appearance.  The stencil potentially  paints  foreground  color
       where  image  has  a true value and background color where image is false, but only pixels
       that have a corresponding true value in mask are  thus  affected.   The  stencil's  origin
       coincides  with the origins of the image and mask bitmaps. The mask's bounding box defines
       the stencil's extent.

PUBLIC OPERATIONS

       UStencil(Bitmap* image, Bitmap* mask = nil, Graphic* = nil)
              Construct a UStencil, supplying an  image  and  an  optional  mask  bitmap  and  an
              optional graphic from which to obtain an initial set of graphics state.  Specifying
              nil for mask is equivalent to supplying a mask of the same size and shape as  image
              that contains all true values.

       void GetOriginal(Bitamp*&, Bitmap*&)
              Return the bitmap parameters supplied in the constructor.

SEE ALSO

       Bitmap(3I), Graphic(3U)