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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BalintCsala

function u(t) {

for(X=99;X--+200;)for(Y=99;Y--+99;)((f=(n,x,y)=>n&&x<2&&y<2&&f(n-1,x*x-y*y+U,2*x*y+V))(99,U=X/99,V=Y/99)===0&&x.fillRect(X+200,Y+99,1,1))

Mar 24 2018 10:13 PM UTC

}// 137/140

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Mandelbrot set

u/iverjo

#mandelbrot #fractal

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mattdzugan

function u(t) {

c.width|=0;for(i=0;i<157;i++){n=t/50+i/150;x.fillStyle=R(0,99,240,.5+i/400);x.fillRect(960+300*C(24*n),540+300*C(18*n+.4),6+i/8,6+i/8);}

Dec 28 2017 9:19 PM UTC

}// 136/140

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gabeu

function u(t) {

c.width=250;for(i=0;i<3e3;i++){x.fillStyle=R(128*(1+C(i/1e3)),128*(1+S(i/1e3)),9);x.fillRect(50*(2+C((1+T(t/7))*i/99)),50*(1+S(i/99)),1,1);}

Dec 30 2017 6:50 PM UTC

}// 140/140

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u/quuxman

Simply made it bigger https://www.dwitter.net/d/4875

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hello@perk.ee

remix of d/34053 by u/hello@perk.ee

function u(t) {

with(x){beginPath()
fillStyle=`hsl(${t*9} 50%50%`
l=(T,d=.5)=>lineTo(S(t+T)/d*960+960,C(t+T)/d*540+540)
l(0)
l(.8,2)
lineTo(960,540)
fill()}

Jun 27 2025 5:23 PM UTC

}// 140/140

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384.cz

function u(t) {

t?T.valueOf=_=>Math.random()*128:f=c.width=256
x.fillText(8,T,T)
for(i=f*4;i--;x.clearRect(0,T+T,f,.05))i<32&&x.drawImage(c,T,T,T,T)

Jul 19 2024 5:55 PM UTC

}// 132/140

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Clouds

u/taupelink

Cool! Charcoal effect
u/SkibidiHawk

#sigmaboy

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WasifBoomz

function u(t) {

a=Math.random()*1920
x.strokeStyle=R(Math.random()*255,Math.random()*255,Math.random()*255,Math.random())
x.strokeRect(a-960,a-960,a/2,a/2)

Jan 14 2019 2:48 PM UTC

}// 140/140

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yokljo

remix of d/3264 by u/hoblay

function u(t) {

for(i=9,c.width=192;i--;x.fillRect(40+i*10+S(t)*30,40,5,20));

Oct 9 2017 11:55 AM UTC

}// 61/140

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Thought it could do with some golfing

u/Xen

can lose the ; by putting fillRect outside the brackets.
u/yokljo

oh yeah lol

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DaSpider

remix of d/17902 by u/BriSeven

function u(t) {

c.width=700
for(i=8;i--;){
x.font=i+'em a'
x.fillText(['🚛','🚑','🚒','🚚','🚐','🚙','🚕','🚗','🚓'][i+(_=~~(t/2))%3],620-(i/2*t*512&1023),10*i**2)
}

Mar 12 2020 8:27 PM UTC

}// 140/140

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replacing x.fillText([...'🚛🚑🚒🚚🚐🚙🚕🚗🚓'][i+(_=~~(t/2))%3],620-(i/2*t*512&1023),10*i**2) saves a few chars

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katkip

function u(t) {

eval(unescape(escape`𨰮𬱴𮑬𩐮𨡡𨱫𩱲𫱵𫡤🐢𘰱𜀱𘠻𨰮𭱩𩁴𪀪🐱𞱸𛡦𪑬𫁓𭁹𫁥🐢𘱦𩡦𘠻𦀽𦐽𜀻𩡯𬠨𪐽𞀹𞐻𪐭𛐻𚑸𛡦𪑬𫁒𩑣𭀨𦀪𝐰𜀫𜐶𜀬𝐰𜀫𦐪𜰰𜀫𤰨𭀯𞐩𚠳𜀰𛀹𛀹𚐬𦀫👓𚁙𚱓𚁴𛰹𚐩𛁙𚰽𠰨𦀫𦐯𞐹𚐠`.replace(/uD./g,'')))

Jul 28 2019 8:28 PM UTC

}// 119/140

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#space #galaxy c.style.background="#101";c.width*=1;x.fillStyle="#fff";X=Y=0;for(i=899;i--;)x.fillRect(X*500+160,500+Y*300+S(t/9)*300,9,9),X+=S(Y+S(t/9)),Y+=C(X+Y/99)

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KilledByAPixel

function u(t) {

eval(unescape(escape`𩡯𬠨𭀿𨰮𫱵𭁥𬡈𥁍𣀽𫰺𪐽𫰽𙰧𞱩𚰫🀱𜀲𝀻𫰫👠🁣𫱤𩐠𫱮𨱬𪑣𪰽𭁨𪑳𛡩𫡮𩑲𢁔𣑌🐧𙁻𣐨𪐩🰧𚠧𞡮𯁼𙲷𙱽𙰾𘰼𛱣𫱤𩐾𙁻𪐥𝠴🰧𙰺𙰼𬀾𙱽𨀩𩡯𬠨𫠽𪠽𜀻𪠼𞐻𫠫👍𚁩𛐶𝐫𪠥𜰫𚁪𚰫𛰳𯀰𚐪𝠴𚐩𣐽𪐽🡩🠶𝀦𪐼𞐶𜀦𪐥𝠴🠱𙡃𚁩𚡩𚐾𛠹`.replace(/u../g,'')))

Jul 30 2020 6:37 AM UTC

}// 138/140

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Minesweeper 💣 #interactive #game

u/KilledByAPixel

hint - the sides are safe, there are 117 mines
u/Irratix

0_0
u/Xen

This is epic!!!
u/donbright

holy cow