UStencil - structured graphic displaying a bitmap

       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.

       UStencil - structured graphic displaying a bitmap

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.

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

Bitmap(3I), Graphic(3U)

Unidraw                                          2 February 1991                                    UStencil(3U)

#include<Unidraw/Graphic/stencil.h>