October 28, 2020 by Chris Johnson. Filed under public, twoville.
Yesterday I posted a checkerboard that reorganized itself by translation. This one reorganizes by rotation.
And here’s the Twoville source code.
step = 20 with export size = [512, ~] with time start = 0 stop = step * 4 delay = 0.05 for r in -1..11 for c in -1..11 if abs(r) % 2 != abs(c) % 2 // Bottom right with polygon() stroke.color = :cornflower stroke.size = 0.25 color = :cornflower vertex().position = [c, r] * 10 vertex().position = [c + 1, r] * 10 vertex().position = [c + 1, r + 1] * 10 with rotate() pivot = [c + 1, r] * 10 0 -> step * 1 -> t degrees = 0 t -> step * 2 -> step * 3 -> t degrees = -90 t -> step * 4 //-> step * 5 -> t degrees = -180 // Top left with polygon() stroke.color = :cornflower stroke.size = 0.25 color = :cornflower vertex().position = [c, r] * 10 vertex().position = [c + 1, r + 1] * 10 vertex().position = [c, r + 1] * 10 with rotate() pivot = [c, r + 1] * 10 0 -> step * 1 -> t degrees = 0 t -> step * 2 -> step * 3 -> t degrees = -90 t -> step * 4 //-> step * 5 -> t degrees = -180 step = 20 with export size = [512, ~] with time start = 0 stop = step * 4 delay = 0.05 for r in -1..11 for c in -1..11 if abs(r) % 2 != abs(c) % 2 // Bottom right with polygon() stroke.color = :cornflower stroke.size = 0.25 color = :cornflower vertex().position = [c, r] * 10 vertex().position = [c + 1, r] * 10 vertex().position = [c + 1, r + 1] * 10 with rotate() pivot = [c + 1, r] * 10 0 -> step * 1 -> t degrees = 0 t -> step * 2 -> step * 3 -> t degrees = -90 t -> step * 4 //-> step * 5 -> t degrees = -180 // Top left with polygon() stroke.color = :cornflower stroke.size = 0.25 color = :cornflower vertex().position = [c, r] * 10 vertex().position = [c + 1, r + 1] * 10 vertex().position = [c, r + 1] * 10 with rotate() pivot = [c, r + 1] * 10 0 -> step * 1 -> t degrees = 0 t -> step * 2 -> step * 3 -> t degrees = -90 t -> step * 4 //-> step * 5 -> t degrees = -180 expand
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