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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carlcrede

function u(t) {

c.style.filter="invert("
for(c.width|=i=499;i--;x.arc(1e3+C(z=i/1.5**t)**i/-1,540+S(z)*i,i*2,0,i%1e999))x.beginPath(x.stroke())

Mar 24 2021 12:52 PM UTC

}// 127/140

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u/Xen

Welcome to the dwitter family!
u/carlcrede

Thanks :)

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donbright

remix of d/6294 by u/nickd3000

function u(t) {

Q=(x,y)=>x*x+y*y
for(i=N=128;i--;)for(j=N;j--;)B=Q((半=64)-i,半-j-S(t/3)*半),G=Q(半-i-C(t)*半,半-j),x.fillStyle=R(B%G,G%B),x.fillRect(i*8,j*8,8,8)

Jan 23 2018 4:35 AM UTC

}// 140/140

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note to future self... this is some kind of weird combination of interference patterns between waves, and circle-squares fractals ....to see whats going on, start out with fillstyle=R(B%256,0,0) then work from there.

u/donbright

note to future self... this is some kind of weird combination of interference patterns between waves, and circle-squares fractals ....to see whats going on, start out with fillstyle=R(B%256,0,0) then work from there.
u/donbright

in other words, it's not drawing the "lines of force", those lines are an artefact of the remainders of the 'quadrance' (squared distance) between the two black balls

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Xen

function u(t) {

t?x.fillRect((F=frame)%3,C(F),1,1,x.fillStyle=R(F%69,F%96)):c.width=3

Jul 26 2017 6:36 PM UTC

}// 69/140

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Low-Res 69byte Plasma Gone wrong lol

u/iverjo

#plasma
u/BuRRak

67 if you use t*60 instead of frame

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cantelope

function u(t) {

with(x)fillRect(0,0,w=c.width|=0,w),translate(w/2,540),rotate(t),font=(f=1400)+'px x',textAlign='center',fillStyle='red',fillText('☯',0,490)

Dec 6 2025 11:45 PM UTC

}// 140/140

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u/hopeomathy

nice trick
u/cantelope

everything (or nothing) is a trick in code golf

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taupelink

remix of d/26135 by u/taupelink

function u(t) {

eval(unescape(escape`猽䵡瑨⹲慮摯活搽琪⩴㭦潲⡩㴲〰㭩ⴭ㭸⹦楬汒散琨堪㘵ⰸ㄰ⵯⰭ焯琬漩⥘㴳㈪猨⤬夽㤪猨⤬焽椪匨堪⩃⡙⤩⩴⨪夯㌬砮晩汬却祬攽刨爽㐰〯搪匨堪天⨪㐰Ⱪ⼷干⼴⽤ⱱⱩ⽱⽤⨪㐩Ɐ㴭㤪焪匨㜪琪⨮㔩⽤`.replace(/u([^D].)/g,'$1%')))

Sep 20 2022 6:24 PM UTC

}// 140/140

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d/26175

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marcogiollo

remix of d/792 by u/vez

function u(t) {

d=f=>{for(X=0;X<c.width;X++)x.fillRect(X,f(X),1,1)};
x.fillStyle=R(S(t+.3)*95+150,55,120,.3);
d(X=>S(t+X/(400))*(S(t+10)*285)+760);

Feb 23 2017 3:48 PM UTC

}// 131/140

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katkip

remix of d/11363 by u/katkip

function u(t) {

c.width*=1;x.lineWidth=13;for(i=40;i--;)for(j=40;j--;)x.beginPath(),x.ellipse(i*50,j*26,40,0,C(i*j*0.32+t*9)>0?3.14:1.57,0,7),x.stroke();

Dec 9 2018 1:37 PM UTC

}// 137/140

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Traffic

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butcherfly

function u(t) {

with(x)for(i=0;i<16;i++)for(j=0;j<16;j++){
fillStyle=R(S(t+i)*180,0,S(t+j)*180)
fillRect(120*i,67.5*j,120,67.5)
}

Feb 7 2019 4:10 PM UTC

}// 113/140

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ianertson

function u(t) {

for(i=w=3e3,a=b=g=333*T(t%9/7);j=(i^a*a)%4,i--;x.fillRect(S(g*9)+C(j*5)*g-a/2-w+t,t+=g-S(j*2+t)*g-b/2-w,s,s),w=6)x.fillStyle=R(s=w*9,w,s,.1)

Dec 28 2017 3:07 PM UTC

}// 140/140

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hollo47

function u(t) {

for(c.width=w=300,h=400,i=1;i<53;i++)a=3*t*i/2%w*2,a>w?a=2*w-a:a,b=h-S(t-i)*h,b>h?b=2*h-b:b,x.fillStyle=R(a,t*i,b,1),x.fillText("⬤",a,b);

Apr 5 2018 1:22 PM UTC

}// 137/140

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My best attempt at recreating the sony bravia bouncy balls ad

u/New_Core

=) did you see.. https://www.dwitter.net/d/3267
u/hollo47

No I didn't, wow.