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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.

Try the new frontend: beta.dwitter.net
Current theme challenge: #Food

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taupelink

remix of d/35385 by u/taupelink

function u(t) {

for(i=z=1440,k=120;i--;x.fillRect(i%16*k,m*k,k,k))m=i>>4,x.fillStyle=R(r=257-(z&=(m*z+t/15+9*z)%8)**2*4,r,r,r**-.5),z=8+8*C(z-t/25*C(z+i))

May 21 2026 4:45 AM UTC

}// 138/140

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d/35411

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46uuuu

function u(t) {

k=50*t
r=8*k
x.fillStyle=R(k,k,k)
x.font="99px Arial"
x.fillText("Never gonna give you up ",r,r)
if(k>142)throw"😂 "+"You are fastened";

May 20 2026 3:06 PM UTC

}// 135/140

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Seatbelt

u/cantelope

gottem

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rodrigo.siqueira

remix of d/35373 by u/rodrigo.siqueira

function u(t) {

for(i=99;i--;f(i,t,600))f=(X,Y,n)=>n--&&(f(.5+.9*(X*C(Z=C(Y+3)/(X*X+Y*Y)+2)-Y*S(Z)),X*S(Z)+Y*C(Z),n),x.fillRect(X*650+800,730-Y*520,t<2,.1))

May 16 2026 4:46 PM UTC

}// 140/140

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Marbled spiral #attractor

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rodrigo.siqueira

remix of d/35351 by u/rodrigo.siqueira

function u(t) {

for(i=99;i--;f(i,t,900))f=(X,Y,n)=>n--&&(f(1.2+.8*(X*C(Z=1/C(X*X+Y*Y)-6)-Y*S(Z)),X*S(Z)+Y*C(Z),n),x.fillRect(X*500+360,Y*400+550,t<3,.2))

May 15 2026 2:17 PM UTC

}// 137/140

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Marbled paper effect

u/cantelope

don't get me started about marbled paper! half the stores i go to have it on every isle. I can't throw a rock without hitting some marbled paper. my house is stacked with ream after ream of it. towers of marbled paper from floor to ceiling. My clothes, bedding, wallpaper... you guessed it. all marbled paper. great dweet by the way.

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taupelink

remix of d/35363 by u/taupelink

function u(t) {

for(i=z=2e3;i--;x.fillRect(i,180*t,z+=4+8*S(z+=t),9))x.fillStyle=`hsl(${[0,150,195,15][z&=3]},60%,${90+t*C(z-t)*(z+=6*S(i/(z+=2)**4))}%,.2)`

May 13 2026 2:00 AM UTC

}// 140/140

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d/35365

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yokiebob

function u(t) {

with(x)q="strokeText",j=200,c.width|=0,font="170px Arial",lineWidth=7,setLineDash([j,10,(C(t*9)+1)*200]),x[q]("Help me compress",j,j);

May 7 2026 2:04 AM UTC

}// 134/140

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In comments pls

Show more comments…
u/yokiebob

with(x)for(O=200,i=0,c.width|=0,q=Math,f=t=>S(t)+C(t),y=t=>f(t)*C(t)+t,d=t=>(y(t+.1)-y(t))/(f(t+.1)-f(t));i++<14;)m=(3*t-i/2)%7,save(),translate(f(m)*O+600,y(m)*O-O),rotate(q.atan(d(m))),fillRect(-25,-99,50,O),restore();
u/KilledByAPixel

https://beta.dwitter.net/ has built in compression. ;)
u/yokiebob

I mean that I want to reduce the byte size to fit. I know about the compression already and I don't think mine fits with that compression anyway yet.
u/cantelope

of help perhaps, https://dwitter.net/h/compressor i use d/11852 a lot
u/KilledByAPixel

check this one out https://www.dwitter.net/d/19823
u/yokiebob

Cool Dweet! That's basically the look I was going for. What I really meant to say was help me _golf_ this, because even with compression I can't get it sub 140. If it's just a skill issue sorry. I got the dweet to 216 uncompressed right now.
u/yokiebob

with(x)for(O=200,i=0,c.width|=0,f=t=>S(t)+C(t),y=t=>f(t)*C(t)+t,d=t=>(y(t+.1)-y(t))/(f(t+.1)-f(t));i++<14;)m=(3*t-i/2)%7,translate(f(m)*O+600,y(m)*O-O),rotate(Math.atan(d(m))),fillRect(-25,-99,50,O),resetTransform();
u/dee-gomma

Simple initial golfing to reach the goal:
u/dee-gomma

with(x)for(c.width|=i=O=200,f=t=>S(t)+C(t),y=t=>f(t)*C(t)+t;i--;fillRect(-25,-99,50,O),resetTransform())translate(f(m=(3*t-i/2)%7)*O+600,y(m)*O-O),rotate(Math.atan((y(a=m+.1)-y(m))/(f(a)-f(m))))
u/yokiebob

Thanks! Nice work.
u/Joachim

enjoy --> c.width=400,x.font='50px"',x.setLineDash([120+C(t)*120,120]),x.strokeText("Help me compress",9,99)

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taupelink

remix of d/35444 by u/taupelink

function u(t) {

for(i=z=1080;i--;x.fillRect(420*t,i,z*4,6))r=36+(z=z%.6*9|0)**3,x.fillStyle=R(r*z,3*r,r*5/++z,(z+=2+S(t/z))/r),z+=S(z-(i/240/z+t/15)**(3/z))

May 26 2026 4:04 PM UTC

}// 140/140

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d/35445

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46uuuu

remix of d/14430 by u/veubeke

function u(t) {

x.font=300+S(t*2)*99+'px"'
x.save()
x.translate(960,540)
x.rotate(t)
x.fillText('😂',-85,40)
x.restore()
x.drawImage(c,-2,-2,1924,1084)

May 23 2026 3:45 AM UTC

}// 134/140

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46uuuu

function u(t) {

eval(unescape(escape`𨠽𩁯𨱵𫑥𫡴𛡢𫱤𮐻𒡢𛡩𫡮𩑲𥁥𮁴👠𣡧𪑶𩐠𭐠𭑰𣡬𩑴𘁵𘁤𫱷𫡎𪱩𫁬𘁵𘁢𮐠𨐠𬁩𮁥𫁎𬡩𨱫𬡯𫁬𘁵𒡢𭑴𛠮𛠠𢐠𨑬𬡥𨑤𮐠𩁩𩀠𭁨𪑳𨀮𬡥𬁬𨑣𩐨𛱎𛱧𛁠𒡎𩑶𩑲𘁧𫱮𫡡𘁠𚐊𨠮𬱴𮑬𩐮𩡯𫡴𤱩𮡥🐢𜡥𫐢`.replace(/u../g,'')))

May 22 2026 3:01 AM UTC

}// 123/140

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u/cantelope

virus

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46uuuu

function u(t) {

const my = 10;
const kebab = 0;
const caase = 0;
const variable = 0;

x.font = "100px Arial";
x.fillText(my-kebab-caase-variable, 500, 500)

May 21 2026 3:12 PM UTC

}// 139/140

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How to do kebab-case variables in JavaScript (look at source code)

u/KilledByAPixel

ha! i've always thought kebab-case is misnamed. kebab means meat. it should be called shish-case