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Traditional
origami models, painstakingly developed by hand, have mostly been
simple structures - stylistic “sketches” of birds and
flowers, and pretty decorative boxes. The toolkit of the computational
origamist vastly expands this repertoire through the techniques
of mathematics, enabling the construction of elaborate geometrical
models and startlingly realistic animals with detailed anatomical
features such as wings and claws and antennae.
One of the major hurdles for the technical folder
is to solve what is known as the circle-packing problem. If, for
example, you want to make a lobster, which has a dozen or more different
parts, how do you assign the space on the paper so that all the
parts are accommodated? It turns out that mathematically this is
equivalent to the long-standing problem of how can one efficiently
pack a bunch of circles into a square. Though trivial to state,
mathematicians do not have a general solution to this question and
can only solve it for around two dozen circles. Fortunately that
is good enough for most origami challenges. Dr Robert Lang’s
Treemaker program will compute the circle-packing solution for a
wide range of models and design the pattern of creases to define
the desired form.
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