GD::Polygon − Polygon class for the GD image library
The GD .pm interface is copyright 1995−2005, Lincoln D. Stein. It is distributed under the same terms as Perl itself. See the "Artistic License" in the Perl source code distribution for licensing terms.
The latest versions of GD .pm are available on CPAN:
GD GD::Polyline, GD::SVG , GD::Simple, Image::Magick