#interactive #d3 #perspective, see also… by gabrielsroka

function u(t) {

c.width=1920 // clear the canvas
for(i=0;i<9;i++)
x.fillRect(400+i*100+S(t)*300,400,50,200) // draw 50x200 rects

} // 122/140

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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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gabrielsroka

function u(t) {

eval(unescape(escape`睩瑨⡸⥯湭潵獥浯癥㵥㴾氨匽攮砬䌽攮礬吽挮睩摴栽㔶㠩ⱸ⹬㵬楮敔漬氨䔽匯㈬䐽䌯㈩ⱬ⡅ⱊ㵄⬹㤩ⱬ⡓ⱆ㵊⨲⤬氨匬䌩ⱬ⡗㵔⼲⭅ⱄ⤬氨圬䨩ⱬ⡓ⱆ⤬氨匬䌩ⱬ⡅ⱄ⤬氨㈪圯㌬䌯㌩ⱬ⡗ⱄ⤬氨匬䌩ⱳ瑲潫攨⤻`.replace(/u(..)/g,"$1%")))

Oct 14 2018 8:53 PM UTC

}// 140/140

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#interactive #d3 #perspective, see also https://www.khanacademy.org/computer-program…

Show more comments…
u/gabrielsroka

see also https://www.dwitter.net/d/9207
u/gabrielsroka

uncompressed: with(x)onmousemove=e=>l(S=e.x,C=e.y,T=c.width=568),x.l=lineTo,l(E=S/2,D=C/2),l(E,J=D+99),l(S,F=J*2),l(S,C),l(W=T/2+E,D),l(W,J),l(S,F),l(S,C),l(E,D),l(2*W/3,C/3),l(W,D),l(S,C),stroke()
u/gabrielsroka

#cube maybe?
u/pavel

onmousemove=e=>[S=e.x,E=S/2,E,S,S,W=284+E,W,S,S,E,W*2/3,W,c.width=568].map((a,i)=>x.lineTo(a,[C=e.y,D=C/2,J=D+99,F=J*2,C,D,J,F,C,D,C/3,D][i])),x.stroke()
u/yonatan

139 with Path2D: onmousemove=e=>x.stroke(new Path2D('M'+[S=e.x,C=e.y,E=S/2,D=C/2,E,J=D+99,S,F=J*2,S,C,W=274+E,D,W,J,S,F,S,C,E,D,2*W/3,C/3,W,D],c.width=568))
u/gabrielsroka

u/pavel - i was just thinking about trying something similar, but you beat me to it. well done!
u/gabrielsroka

u/yonatan - i was not aware of Path2D. thanks, and well done! i also see my T could be optimized (leftover from a previous iteration)
u/donbright

brava
u/rep_movsd

#underrated


      u(t) is called 60 times per second.
      t: elapsed time in seconds.
      c: A 1920x1080 canvas.
      x: A 2D context for that canvas.
      S: Math.sin
      C: Math.cos
      T: Math.tan
      R: Generates rgba-strings, ex.: R(255, 255, 255, 0.5)

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