Random dweets | Dwitter

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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TGY

remix of d/23680 by u/TGY

function u(t) {

for(i=frame%214,j=6;j--;)
for(y=82-20*j+9*S(p=i/45+j)**2;y++<120-j*20;x.fillRect(9*i,9*y|0,9,9))
x.fillStyle=R(g=80+45*S(p+y/20)**2,g+y,3*g)

Aug 30 2021 4:05 PM UTC

}// 140/140

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#windows11

u/davidsover

Upgrade for free!

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ximavus

function u(t) {

x.fillRect(x.globalAlpha=.001/t,0,2e3,1080)
for(i=2e3;i--;)x.clearRect(i,C(t+i)**S(t+i)*t,9,9)

Dec 14 2025 7:27 PM UTC

}// 94/140

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Demonstration of a bug I found with x.globalAlpha. Breaking the .001961 limit. As long as it is more than .001961 at some point if will be valid

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ciaccodavide

remix of d/21648 by u/Pascal

function u(t) {

for(c.width|=i=w=960;i--;x.fillStyle=R(i),x.fillRect(w+w*(3*C(U)+C(V=i/1.752-t))/Z,w-(S(U)+C(V)*T(V)-2.5)/Z*w,s=(8/Z)**5,s))Z=S(U=i+1.1*t)-5

Feb 12 2021 9:01 AM UTC

}// 140/140

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SakulTheBadger

function u(t) {

c.width=1920 // clear the canvas
for(i=0;i<9;i++)
for(i=0;i<227;i++) {
x.strokeRect(45+i*t+10+S(t)*300,400,50,2000) // draw 50x200 rects
}

Mar 28 2021 9:44 PM UTC

}// 138/140

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Weird accordion

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384.cz

function u(t) {

eval(unescape(escape`𪑦𚀰🐽𭀩𩡯𬠨𨐽𜐱𝐷𞐲𜀸𞐲𜰶𝐷𞀹𞐵𝰲𜠲𝠷𞐲𝰲𜐰𞀰𝠱𝰶𝀴𞀹𜠵𝀶𝰰𝰹𜠱𜀵𝰱𞐳𜠴𞀲𜀶𝰸𜠴𝠶𜰹𝰲𝐴𜰶𝀷𫠮𭁯𤱴𬡩𫡧𚀲𚐬𪐽𜀻𜠵𝠾𪐻𚑸𛡦𪑬𫁓𭁹𫁥🐢𘰢𚰨𘠢𚰷𚠫𨐮𨱨𨑲𠑴𚁩𚐩𛡲𩑰𩑡𭀨𜰩𛁸𛡦𪑬𫁒𩑣𭀨𪐥𜐶𚠱𝠬𪐬𜐶𛀱𝠩𛁩𚰫`.replace(/u../g,'')))

Jul 18 2022 5:59 PM UTC

}// 140/140

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#bird #pixelart

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384.cz

remix of d/26099 by u/jdspugh

function u(t) {

c.width|=a=600
x.font="9em'"
x.fillText("🏛 💂🌾",a,a)
for(i=5;i--;)x.fillText(["🏹","🧙‍♂️","👨‍🌾","👹","🐉"][i],a+S((i+1)*t/3)*a,a+C((i+1)*t/4)*a)

Sep 4 2022 7:01 AM UTC

}// 140/140

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á lá Warcraft - Emojied v2

u/384.cz

#warcraft

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sammnov

function u(t) {

{c.width=1920;for(i=500;i--;x.fillRect(960+i*C(i+t),540+i*S(i-t),W=t%5,W))x.fillStyle=`hsl(${i},99%,50%)`}

Aug 21 2026 7:37 AM UTC

}// 107/140

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A mini particle emitter inspired by the NixieFX.com web game engine runtime! #Particles

u/joeytwiddle

I think you posted this one twice. I like it, but something tells me it wants mouse interaction...

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vchoulga

function u(t) {

c.width^=0;for(i=1e3;i-=20;)x.fillStyle=`hsl(${i/5+t*60},100%,50%)`,x.beginPath(),x.arc(960,540,i+t*40,0,7),x.fill()

Nov 12 2024 6:44 PM UTC

}// 118/140

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u/fentbiggesthater

sorry, stolen

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DotsnLines

function u(t) {

c.width = 1920;
for(let i = 0; i < 1201; i++){let j = 600 - i;x.fillRect(Math.sin(t/500*i)*i*0.75+960,Math.cos(t/500*i)*j*0.75+540,8,8)}

Dec 16 2022 10:10 PM UTC

}// 136/140

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Sine Wave Portal

u/joeytwiddle

pretty!
u/4ce

Hello u/DotsnLines & everyone; maybe someone need versions this d/26627 with 90symbol: c.width+=0;for(i=1201;i--;)j=600-i,n=t/500*i,x.fillRect(S(n)*i*.75+960,C(n)*j*.75+540,8,8) and if you want get line 123symbol: c.width+=0;x.lineWidth=9;x.beginPath();for(i=1201;i--;)j=600-i,n=t/500*i,x.lineTo(S(n)*i*.75+960,C(n)*j*.75+540);x.stroke() ~_^

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Xen

function u(t) {

Z=4
for(Y=(X=(s=330)*2)/2,n=i=39;i--;X+=C(t)*n+s/n+6,Y+=S(t)*n+s/n+6)x.fillRect(X,Y,s*=.95,s),x.fillStyle=`hsla(${s*t*Z},99%,50%,.07)`

Sep 11 2017 8:44 PM UTC

}// 134/140

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Raise 'Z' as high as you dare...sit back and stare fullscreen.