Top dweets of all time

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: #Food

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jasonbdly

function u(t) {

d=x.createImageData(w=c.width=256,144)
d.data.map((v,i,a)=>{a[i]=(i/.01%w-128)**2*C(t)**2-(i/2/w+32)**1.5*S(t)*S(i)});x.putImageData(d,0,0);

Feb 23 2017 6:31 AM UTC

}// 140/140

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recursive

remix of d/887 by u/New_Core

function u(t) {

t||((I=new Image()).src="https://is.gd/aYk0fZ")
x.fillRect(0,0,z=5e5,z)
for(i=960;i--;)x.drawImage(I,0,t*60-z/(250+i),w=640,1,w-i,i,w+i*2,1)

Feb 22 2017 6:42 PM UTC

}// 140/140

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Got a black backgrounhd

u/lionleaf

Awesome! Give it some time to start ;)
u/New_Core

nice =)

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sigveseb

function u(t) {

for(n=c.width=i=1e3,s=S(t),k=C(t);i--;x.lineTo(n*X/Z,n*Y/Z))F=S(i),U=C(i),V=(i&7)-3,_=V*s+F*k,Z=V*k-F*s+15,X=_*k-U*s+7,Y=_*s+U*k+3;x.fill()

Aug 8 2016 1:32 AM UTC

}// 139/140

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two-axis rotation

Show more comments…
u/sigveseb

and a quasi-reflective material
u/iverjo

Wicked!
u/iverjo

Btw, this is really slow in FF (~1 FPS) but fast in Chrome (looks like 60 FPS)
u/sigveseb

typical :P
u/3bl3gamer

FF, 30-50 fps
u/p01

Witchcraft!

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sigveseb

function u(t) {

c.width=512;x.beginPath();x.translate(256,128);(a=b=>{b&&a(b-1);x.rotate(1+S(t/99));x.lineTo(C(t+b/90)*b/8+b/4,9+S(t)*99)})(512);x.stroke();

Jul 21 2016 10:40 PM UTC

}// 140/140

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u/iverjo

Cool! If you had to give this a name, what would it be?
u/sigveseb

Dweety McDweetface
u/iverjo

lol
u/iverjo

Swirly McSwirlface

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iverjo

remix of d/286 by u/iverjo

function u(t) {

t=t%4;if(t<.1)r=X=Y=0,W=c.width=960,H=540;for(i=W*4;i--;)x.fillRect(X=(X+S(r+=.5-Math.random())%W+W)%W,Y=(Y+C(r)%H+H)%H,A=5/(1+t*9),A)

Jul 21 2016 1:21 PM UTC

}// 134/140

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u/sigveseb

almost looks like a map!
u/joeytwiddle

Whoa! When I was younger I used to have nightmares about this damn thing. I would clean it all away but then it would come creeping back. Weird that you found it in 2016!
u/iverjo

#random

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iverjo

function u(t) {

c.width=198;X=Y=99,a=0,d=9;for(i=0;i++<30;)x.beginPath(),x.moveTo(X,Y),x.lineTo(X-=d*S(a),Y-=d*C(a)),d*=.9,x.stroke(),a+=S(2*t-i/12)/3

Jan 8 2016 1:22 AM UTC

}// 134/140

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u/stiaje

Nice blurring!
u/iverjo

The blur wasn't meant as a part of the effect. I believe it was done as a compromise to save a few bytes at a point during the process of creating the dweet
u/katkip

#plant

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rodrigo.siqueira

remix of d/34368 by u/rodrigo.siqueira

function u(t) {

c.style.filter=`sepia(.2`
if(t<1)for(n=i=33500;i--;x.fillRect(960+350*l*S(q=i/330+S(i/t)),660*C(l/1.63)**S(q+l/2)-250,.4,1))l=i/2e4

Sep 27 2025 4:46 PM UTC

}// 131/140

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Spiral bend

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rodrigo.siqueira

remix of d/34334 by u/KilledByAPixel

function u(t) {

for(i=1e4;i--;d=T(i+i*t)<<1)A[j=i]&&!A[j+=--d]&!A[j+d]&j%w<99?A[j]=A[j+d]=20:x.fillRect(i/2.8/t-9,i%w*36.5/t-14,2*(t<2),A[i]/9)}{A=[w=90]

Sep 18 2025 2:58 PM UTC

}// 137/140

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Multiple perspective patterns

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rodrigo.siqueira

remix of d/34278 by u/rodrigo.siqueira

function u(t) {

for(x.fillRect(x.globalAlpha=.1,0,i=2e4,i),h=540;i--;x.clearRect(960-.4/C(i)/Z*h**1.1,540+S(l)/S(i)/Z*h,s=4/Z+3,s))Z=C(l=i*i+t/2)/S(i)+2+1/t

Sep 11 2025 2:56 AM UTC

}// 140/140

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Double particle rotator

u/fadine

what is this?
u/jellyedwards

So cool!
u/ximavus

u/fadine D o u b l e p a r t i c l e r o t a t o r
u/ximavus

its double and it rotates particles

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Daithi

function u(t) {

v=-2e3;for(i=2e4;i--;)
(j=S(i+t))>.7&&(x.fillStyle=R(v,v),x.fillRect(j**3*S(i*i)*300+v+i%2*800,C(t/2)*C(i*i)*300+v,p=40+(v<=0)*i,p),v=535)

Sep 3 2025 2:31 PM UTC

}// 139/140

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Eyes in the dark