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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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  • Blacklink: An animation showing the impact of resolution and loop depth on the quality of a mandelbrot!

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Xen
remix of d/14662 by u/Xen

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  • username: weeeeeeeeeeeeeeeeeeeeeeeeeeeeeell, golfing at all costs?
  • Xen: yes!... EVERY cost! lol

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Xen
remix of d/14647 by u/Xen

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  • 13thptr: !
  • Xen: massive shoutz to rodrigo, nice clean code, couldn't of golfed this without him!
  • katkip: 97 for(I=1e3;I;x.fillRect(I--,t*199,X>1,3))for(W=X=I/250-3,Z=Y=t-2,T=9;T--;Y=2*U*Y+Z)U=X,X=X*X-Y*Y+W

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  • rodrigo.siqueira: Artfarnaa, it is possible to make super fast, see this pure JS fast implementation: https://csl.name/mandelbrot/ There are many tricks specifically created to calculate Mandelbrot Set (e.g. avoid calculations in a rectangle inside the main set because all pixels are white and calculations in this white area is slower than other parts), but no speed optimization were used here because of space constraints. Some tricks to make it faster: do not use time variable to do calculations (because it is max 60 fps), do not plot each pixel, but store them in an array and plot at once using c.putImageData(img)...
  • KilledByAPixel: There is one way to make it very very fast. I just made a quick shader of it for you! https://www.shadertoy.com/view/wtjGz3
  • artfarnaa: Thanks guys, great inspiration.

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