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function u(t) {
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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.
Theme challenge of the month: #dancing
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  • u/tomxor
    300px is the default canvas width. What's particularly odd is that while setting negative numbers causes default value, everything else that ordinarily coerces to NaN will result in 0. e.g throw Number({}).toString() // NaN c.width={}; throw c.width.toString() // 0
  • u/tomxor
    I guess in c++ land width has outofrange=300 and NaN=0
  • u/katkip
    looks good
  • u/katkip
    but dangerous

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  • The Enemy

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  • u/tomxor
    Yup, some of the oldest ones from 2017 are quite impressive and completely ucompressed, although that tag is a bit polluted with serpinski triangles later on.
  • u/rodrigo.siqueira
    Code with 185 characters:
  • u/rodrigo.siqueira
    for(w=44,i=w*w;i--;)T[i*!t]=i%7%2 for(e=[i=w*w];i--;)for(n=0,f=9;f--;n+=T[(~~(i/w)+w+f%3-1)%w*w+(i+w+~~(f/3)-1)%w],e[i]=n==3|n-T[i]==3,x.fillStyle=R(T[i]*i),x.fillRect(i%w*w,i,w,w));T=e
  • u/rodrigo.siqueira
    Code with 185 characteres (previous code not working because comment removed a new line): for(w=44,i=w*w;i--;)T[i*!t]=i%7%2;for(e=[i=w*w];i--;)for(n=0,f=9;f--;n+=T[(~~(i/w)+w+f%3-1)%w*w+(i+w+~~(f/3)-1)%w],e[i]=n==3|n-T[i]==3,x.fillStyle=R(T[i]*i),x.fillRect(i%w*w,i,w,w));T=e

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  • Mutating blood cell on microscope

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