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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myxoh

function u(t) {

c.width=2e3
n=(o,r=20)=>{x.beginPath();x.arc(S(t/o*200+o)*o+9e2,C(t/o*200+o)*o+7e2,r,0,6);x.fill()}
n(1,99);n(3e2);n(4e2);n(6e2);n(1e3);

Jan 5 2018 2:46 PM UTC

}// 136/140

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u/donbright

oh em gee

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rodrigo.siqueira

remix of d/17748 by u/katkip

function u(t) {

c.style.filter=`sepia(`
P=(θ,R)=>x.fillRect(S(θ/5)*R+960,C(θ/5)*R+540,.6,1)
for(q=z=i=3e3;i--;)P(S(q)*9,C(z/3)*485),q+=C(z+t/z),z+=S(q*15-z)

Feb 26 2020 3:03 PM UTC

}// 140/140

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Chaotic flower #mandala

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KilledByAPixel

remix of d/14806 by u/KilledByAPixel

function u(t) {

N=(X,Y)=>S(X*X*Y**3)/2+.5
F=_=>N(X|0,Y|0)*(1-X%1)+X%1*N(X+1|0,Y|0)
for(i=2e3;i--;)
x.fillRect(i,t*60,1,F(X=i/30,Y=t*2)*(1-Y%1)+Y%1*F(++Y))

Jul 17 2021 7:00 PM UTC

}// 138/140

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Gradient Noise Demo #noise

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PeerHenry

function u(t) {

c.width=1920
for(j=0;j<12;j++){
for(i=0;i<1000;i++){
var q=t+(1+S(t))*C(t+3)
x.fillRect(80*(1+S(i+t)+2*j),10+i,17+16.5*C(q),11+10.5*S(q))
}}

Jun 12 2018 11:45 AM UTC

}// 140/140

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u/robbyg

118 chars, if you want more room to play: c.width|=0;for(j=12;j--;)for(i=1e3;i--;)x.fillRect(80*(1+S(i+t)+2*j),10+i,17+16.5*C(q=t+(1+S(t))*C(t+3)),11+10.5*S(q))

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KilledByAPixel

remix of d/13418 by u/KilledByAPixel

function u(t) {

for(i=F=2e3;i--;x.fillRect(X-200,i,199,20))k=S(i)**2,X=k*(1e9+t*299)%F,x.fillStyle=R(z=i%2?255*(1-((519-i)**2+(999-X)**2)/2e5):99,z,z+30,.1)

Apr 23 2019 7:30 PM UTC

}// 140/140

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The moon's reflection in the sea.

u/KilledByAPixel

#moon #ocean

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rodrigo.siqueira

remix of d/34778 by u/rodrigo.siqueira

function u(t) {

c.style.filter='invert()sepia()'
for(i=1e4;i--;x.fillRect(960+X*54,540-Y*54,t<2,.1))
F=i%(4+2/t),X=F*S(k=i/t)-4*S(w=k/3),Y=F*C(k)+4*C(w)

Jan 20 2026 1:02 PM UTC

}// 136/140

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Concentric Loop 4

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lewdev

function u(t) {

eval(unescape(escape`󭽩󭍨󚍸󚝴󟽣󛭷󪝤󭍨󟜹󞜺󚍯󫭫󩝹󩍯󭽮󟝯󫭫󩝹󭝰󟝥󟜾󭍨󪝳󦽠󫍵󬭠󦽥󛭷󪍩󨽨󛜳󝽝󧜽󩜮󭍹󬍥󦼵󧜬󦌽󦜽󜼰󛍡󟝵󟝲󟝬󟜰󚜬󬽡󭭥󚌩󛍴󬭡󫭳󫍡󭍥󚍘󚼽󤼨󨜩󛍙󛜽󠼨󨜩󚜬󬭯󭍡󭍥󚍡󚼽󫌿󛜮󜜺󬬿󛬱󞬮󜌵󚜬󬭥󬽴󫽲󩜨󩭩󫍬󥍥󮍴󚌧󧍵󡌸󜽄󧍵󡍅󡜶󙼬󛜵󛌳󚜩`.replace(/u../g,'')))

Jul 16 2025 11:16 PM UTC

}// 139/140

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🛦 Fly the Jet with Arrow Keys #interactive

u/lewdev

I removed so much just to get this to fit. It rotates slightly by default so you don't lose the plane immediately.

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jellyedwards

function u(t) {

x.fillRect(960+S(t/=2)*400+R*t,580+C(t)*400+Math.abs(R=T(t)),9*R,9*S(t)/R)

Feb 1 2021 11:04 PM UTC

}// 74/140

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Poor man's raytraced sphere

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ArthurThuczsec

remix of d/23833 by u/TGY

function u(t) {

for(i=2e3;i--;x.fillRect(i,t/T(i-a-l%9)*99,9,9))x.fillStyle=R(l=69*t%108,i/9,7*l+30*(a=C(i/193+t-S(-t))),.2)

Sep 14 2021 6:03 PM UTC

}// 108/140

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#windows12

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rodrigo.siqueira

remix of d/19759 by u/katkip

function u(t) {

f=(X,Y,n=210)=>Y*Y>n?n:f(2*X*Y-.6,Y*Y-X*X+.13,n-1);for(i=2e3;i--;x.fillRect(i,Y,1,1))Y=t*60,x.fillStyle=`hsl(${f(i/500-2,Y/500-1)},90%,50%)`

Aug 23 2020 9:55 PM UTC

}// 140/140

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#uncompressed #julia set #fractal

u/Xen

nice!