[magick-users] Fill pattern in rectangle using PerlMagick Draw('primitive' => 'rectangle', ..)

[koyaanisqatsi at imagemagick.org]

> can't for the life of me figure out how to get ImageMagick to tile a rectangle

The ImageMagick source distribution includes the shapes.pl script in the
PerlMagick/demo folder.  It tiles inside a polygon primitive but should work
with rectangles as well.