> Since the circle is smaller
This is generally not true.
A pointy triangle could be idealized as an edge,
the resulting circle will always be bigger than a bounding box.
(The corners of the box are on the circle, see Thales's theorem)
You might now claim that something like a regular octagon is better represented by a circle (probably).
But how does the average polygon look like?
I bet it depends on the randomization
 random vertices
 random edges
 random angles
will produce totally different samples
Furthermore it'll be more difficult to fit circles into a quadtree search.
I think using circles in a Cartesian system causes too many headaches.
Cheers Rolf
_{(addicted to the Perl Programming Language :)
Wikisyntax for the Monastery
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