set-polygon in region%

Sets the region to the interior of the specified polygon.

See also draw-polygon in dc<%>.

• (send a-region set-polygon points xoffset yoffset fill-style) -> void
     points : list of point% objects
     xoffset = 0 : real number
     yoffset = 0 : real number
     fill-style = 'odd-even : symbol in '(odd-even winding)