"As opposed to the biology inspired Hyphae and tree algorithms, the next example is based on hand drawings by John Franzen. Essentially Franzen draws lines where each line traces the outline of the previously drawn line. As each hand drawn line will have slight variations, interesting patterns soon emerge.
Drawing shapes on the computer is fairly straight forward. A line consists of a number of vertices (points) with an edge (segment) between them. To create a triangle you need three edges, and you connect them with three vertices. To draw a circle you do the same thing, but you need sufficiently many vertices to make it "impossible" to see that it is not actually a circle. If you are wondering: there are more sophisticated ways of drawing shapes, but this is an easy one."
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