Great game, and it took me a while to figure out, but here is what I found. Due to rps, the line movement wont be completely smooth thus,
Basic Shapes: 90 = square, 300 = hex, 400 = octo, 600 (or 2400, 4800 etc) = triangle. Others give you variations of stars and such, experiment with 100s.
Set to 0 1 0 then 0 0 0 to line up the first two lines (_| turns into _ _), then if the first two numbers remain the same, the movement remains constant and you get a bigger shape. Line up your first two lines then set 90 90 181 (180 = up and down, 181 is thus a slowly rotating) and you'll get a game controller keypad looking thing.(only if the two lines start out parallel) If you remember what the various 100s do, eventually you'll be able to produce almost anything within reason.
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