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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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  • nice one

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remix of d/18577 by u/trusktr

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  • Tan plane looking at your mouse
  • u/pavel
    #interactive #mouse
  • u/pavel
    I tried doing this in js but its just too hard to fit!
  • u/pavel
    168 c.width|=onmousemove=e=>T=e;b=.6-T.y/264;e=g=>C(i)*g(1-T.x/264);f=g=>S(i)*g(b)+e(S)*g(b-1.6);for(i=.8;i<6;x.fill(x.lineTo(960+e(C)/z,540-f(C)/z)))i+=1.57,z=(2+f(S))/960
  • u/pavel
    This post looks better with rotation angles divided by 2 but I couldn't figure out how to fit it.

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  • u/Xen
    sexy lines
  • u/pavel
    It seems like Safari plays dweets significantly slower until you tap on them... Giving the iframe focus increases the request animation frame rate.
  • u/katkip
    very sexy

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remix of d/18322 by u/pavel

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  • #julia set for c = −0.8 + 0.156i

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remix of d/13495 by u/pavel

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  • Show more comments…
  • u/13thptr
    awesome, looks like the ball escapes without breaking everything after a while though. will read the explanation more thoroughly.
  • u/pavel
    No chars left for bounds checks! It freaks out with negative positions. If I find a way to shorten I will add bounds.
  • u/ersagun
    I need to read and reread that explanation on a loop until I get this. This is incredible.
  • u/Qwitter
    Just wow.

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remix of d/18153 by u/Kirjava

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  • u/pavel
    This is a breadth-first traversal of a binary tree, one frame at a time. The tree is maintained in a 1D array (2n+i notation) that I simply iterate left-to-right. The loop does double-duty for drawing the current node and inserting the children. The shape has four corners so the loop runs four times and inserts four children: 2n+0, 2n+1, 2n+2, 2n+3. My mind was blown when I realized no extra code was needed to prevent the adding of the extra children because the first two children of the next iteration will overwrite them!
  • u/joeytwiddle
    #broccoli
  • u/katkip
    interesting
  • u/pavel
    https://i.imgur.com/FZ9Whj4.png

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