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u(t) is called 60 times per second. t: Elapsed time in seconds. S: Shorthand for Math.sin. C: Shorthand for Math.cos. T: Shorthand for Math.tan. R: Function that generates rgba-strings, usage ex.: R(255, 255, 255, 0.5) c: A 1920x1080 canvas. x: A 2D context for that canvas.
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remix of d/11420 by u/cantelope

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remix of d/11421 by u/pavel

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remix of d/11432 by u/pavel

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  • Xen: never before have i used arm movements and shouting to interact with a dweet!

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remix of d/11426 by u/Quant1um

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  • pavel: Single stroke call and only ellipse to draw. The lines are canvas connecting the various ellipse draw cal into a single stroke, I just manage the start angles.
  • pavel: o determines which ellipse, 0 is top and 1 is bottom. It goes: top, bottom, bottom, top. Four-cycle to draw two vertical lines and reset. The angle increments every 2 so top and bottom angle is the same.
  • jylikangas: Thanks for writing about the tricks in your dweets.

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remix of d/11391 by u/pavel

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  • pavel: Fredkin Replicator (non-minified version)
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  • pavel: A cell is 'on' iff the parity of its 'on' neighbors is odd which is the same as the xor of neighbor states
  • pavel: I cheat a little. Y=i>>10 so my rect should use (i>>10)*8 but to save chars I use i>>7. The cells are slightly off-place vertically but its hard to notice.
  • pavel: i&1017 is a mistake, oops, should be i&1016, causes tiny visual glitch. 1016=0b1111111000 which is X*8

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