The Filled
Polygon Tool
This tool is used to fill the interior of
a polygon. To use the tool we first select the vertices of a
polygon that
we wish to fill. Then, we click the filled polygon tool to fill
the polygon.
Order is important when filling the polygon, as the polygon is filled
in
an even-odd fashion. That is, as a scan line moves across the
polygon we
count the number of intersections with the polygon. If this number is
even
(not zero) it fills that region. If it is odd, it does not fill
that region.
