Dweets awesomed by u/triclops200

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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Current theme challenge: #Opposites

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Tesseract

remix of d/2667 by u/yonatan

function u(t) {

r=(t**5)%6&6,
x.fillRect(S=425*r+S>>1,C=425*(2&r)+C>>1,3,3)
//slow but short

May 22 2018 5:43 PM UTC

}// 76/140

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u/lionleaf

#short
u/S.T.L.K.R.

Damn I was trying to do that

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triclops200

function u(t) {

w=1920;c.width=w;m=150
for(i=0;i<m;i++){k=C(t*2+i/50)*255
x.fillStyle=R(255-k/2,0,k)
x.fillRect(i/m*w,w/3.6+100*S(i/10+t/2),10,150*C(i+t))}

Feb 20 2018 11:11 PM UTC

}// 139/140

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u/BirdsTweetCodersDweet

Golfed-ish... Maybe learn some new techniques fromit IDEK, https://www.dwitter.net/d/7041
u/BirdsTweetCodersDweet

See the link in the comments of that one as well. Shortened it some more.
u/triclops200

The first one had golf that kept the output the same, but the second has output changes (the /3.6, for example, was there to approximate center of screen y), otherwise, good golf
u/snydej

Note that "540" is shorter than "w/3.6" ;)

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jellyedwards

function u(t) {

c.width=w=600;for(s=j=80;j<330;j+=4){x.beginPath();for(h=i=200;i;i-=5){d=(i-w/6)/38;x.lineTo(h+i,j-(s/=.9)%w/t*Math.exp(-d*d))}x.stroke()}

Feb 20 2018 8:48 PM UTC

}// 138/140

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unknown pleasures

u/joeytwiddle

Nice! Dwitter album covert art d/2108
u/jellyedwards

@joeytwiddle yours looks much more like it! I had a few other versions with fBm and fill etc. but couldn't get them under 140 chars!

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