Dweets awesomed by u/Volfegan

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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smtsjhr

remix of d/20616 by u/smtsjhr

function u(t) {

for(c.width|=n=12;n--;x.stroke())for(i=0|99;i--;)k=((w=T(-t/3+n*20))*60*C(t+i)*S(n)),x.lineTo(960+w*120+k*S(j=i*6.28/n),540+k*C(j))

Jan 4 2021 11:25 AM UTC

}// 131/140

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everything is connected on this free way

u/ciaccodavide

Cool!
u/donbright

amazinng

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Pascal

function u(t) {

for(c.width|=a=1280;a--;c.style.filter="blur(4px)brightness(.65)contrast(99)")x.fillRect(1909-1.5*a,529-540*T(Math.atan(C(a+t/15))),22,22)

Jan 3 2021 7:18 PM UTC

}// 138/140

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tomxor

remix of d/21114 by u/magna

function u(t) {

for(c.width&=i=8320;i--;)
x.fillRect(X=i&127,Y=i>>7,1,Y/4-8>T(T(S(X/4)*S(Y/4+t*4))))

Jan 3 2021 11:45 AM UTC

}// 84/140

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Smolr

u/DataMeta

bravo
u/magna

83, if you roll the second line up

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rodrigo.siqueira

remix of d/20902 by u/taupelink

function u(t) {

for(i=996;i--;x.fillRect(250*X,250*Y,2e3,1))X=t/2,Y=i/230,h=300*S(Y%S(m=X/2%S(p=C(q=Y*S(X/3))*2)*2+T(i*i**t)/6)),x.fillStyle=R(h*p,h*m,h*q)

Dec 4 2020 5:29 AM UTC

}// 139/140

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Noisy signal

u/taupelink

whoa
u/magna

WOWZA!
u/SMON

haha...not sure why - I guess aliasing - but it sparkles when I scroll :D

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taupelink

remix of d/20654 by u/taupelink

function u(t) {

r=Math.random;for(i=k=214;i--;x.fillRect(k*X,k*Y,i/t,i/t))X=r(Y=r()*5)*9,h=k*S(Y%S(m=X/6%S(p=C(q=Y*S(X/3))*2)*2)),x.fillStyle=R(h*p,h*m,h*q)

Dec 2 2020 4:43 AM UTC

}// 140/140

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d/20902

u/pavel

You can save 7 chars by doing f=i*t,X=f*f%9,Y=X*f%5 in these instead of Math.random. It seems random enough.
u/taupelink

Oh cool, thank you!! I like the way it changes the animation at the beginning too.

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taupelink

remix of d/20630 by u/taupelink

function u(t) {

r=Math.random;for(i=k=214;i--;x.strokeRect(k*X,k*Y,i/t,k/t))X=r(Y=r()*5)*9,h=k*S(S(Y*.7)%C(p=S(q=1.5-X/3)*q+2)),x.strokeStyle=R(h*q,h*p,h*Y)

Nov 22 2020 7:22 PM UTC

}// 140/140

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d/20784

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taupelink

remix of d/20764 by u/taupelink

function u(t) {

r=Math.random;for(i=k=214;i--;x.fillRect(k*X,k*Y,i/t,i/t))X=r(Y=r()*5)*9,h=k*S(m=X%.7%C(p=15%(3-Y)*S(q=X/3)*3)),x.fillStyle=R(h*p,h*q,6*h*m)

Nov 22 2020 6:56 PM UTC

}// 140/140

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d/20783

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taupelink

remix of d/20630 by u/taupelink

function u(t) {

r=Math.random;for(i=k=214;i--;x.fillRect(k*X,k*Y,i/t,i/t))X=r(Y=r()*5)*9,h=k*S(Y*S(m=3*C(p=6%Y*S(q=X/3+.2)))+m-p),x.fillStyle=R(h*p,h*q,h*m)

Nov 21 2020 2:30 AM UTC

}// 140/140

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d/20751

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New_Core

remix of d/17209 by u/New_Core

function u(t) {

x.fillRect(0,0,w=2e3,w)
for(i=480;i--;x.strokeRect(960-i*2,540-i*2,i*4,i*4))x.setLineDash([i]),x.lineDashOffset=w%i+i*t-w,x.strokeStyle=R(i)

Oct 2 2020 10:59 PM UTC

}// 140/140

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danny@hille.dk

function u(t) {

eval(unescape(escape`景爨呗㵉㴾匨琪㌫爫䤪ㄮ㘩⨶〬挮睩摴栽礽㜰〻搽呗⡲㵹⼲㔵⤬礭㴲㬩景爨椽㐻渽呗⡩⤬洽呗⡩⬱⤬戽㈵㔪⡭⵮⤯㜰ⱸ⹦楬汓瑹汥㵒⡩┲㼰㩢ⰰⱩ┲☦戩Ⱪⴭ㬩渼洦♸⹦楬汒散琨渫搫㌵〬礬洭測㈩`.replace(/u(..)/g,"$1%")))

Sep 29 2020 2:59 PM UTC

}// 134/140

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Nothing new, it has all been done before. I just had to try again :-) #twister for(TW=I=>S(t*3+r+I*1.6)*60,c.width=y=700;d=TW(r=y/255),y-=2;)for(i=4;n=TW(i),m=TW(i+1),b=255*(m-n)/70,x.fillStyle=R(i%2?0:b,0,i%2&&b),i--;)n<m&&x.fillRect(n+d+350,y,m-n,2)

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