[metapost] Drawing a urn

Troy Henderson thenders at gmail.com
Thu Nov 29 18:55:24 CET 2007

> yes, which leads to other implementations: put exactly as many black
> balls in as needed, but place them randomly (avoiding collisions), or e.
> g. put balls first in regularly and then stir them up randomly (e.g.
> repeatedly exchanging balls between two random positions.

Is that what your posted code does?


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