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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rodrigo.siqueira

remix of d/33895 by u/rodrigo.siqueira

function u(t) {

for(i=3e4;i--;){
r=S(n=i*i/t)*S(n)**-1.3
X=C(k=i/4)
Y=S(k)
Z=r*r*S(C(i+r*8)*2)/400
x.fillRect(960+X/Z,540-Y/Z,.1,t<3)}

Jun 3 2025 2:17 PM UTC

}// 118/140

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Intertwined 8/16-spiral #spiral

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taupelink

remix of d/15218 by u/taupelink

function u(t) {

for(i=1e4,d=e=0;i--;)x.fillRect((q=d*3e3)*C(p=e*6.28),360+q*S(p),1,1),d+=((r=Math.random()*4|0)-1-d+d*d*e/4)/2,e+=("2110"[r]-1-e)/2

Aug 1 2019 12:36 AM UTC

}// 131/140

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Moved the X*X*Y term over to the X-coordinate

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taupelink

remix of d/27225 by u/taupelink

function u(t) {

eval(unescape(escape`景爨洽㔴〻洭ⴻ砮晩汬剥捴⠨⡭㸾㈩┸⭔⡭⤯稩⨲㐰Ɑ┵⨲㜰⭩⩶ⰲ⩩⽔⡭⤯稬ⴳ⩭⩶⤩瘽琪⨭⡴⵴⽴⨪琩ⱺ㴱⭴⵴⩶Ⱪ㵭┨㌭津㔯㠫䌨津㔪洩⤪㜰⬷〬砮晩汬却祬攽刨瀽楼⡭☱㌩┸⨳〬楼洯㌬灼洯稬瘩`.replace(/u([^D].)/g,'$1%')))

Mar 22 2023 5:19 PM UTC

}// 140/140

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d/27248

u/taupelink

Kind of a watercolor look, takes a few seconds

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e4494s

function u(t) {

with(x){c.width+=0;for(i=0;i<400;i++){T=-t+i*15;fillStyle=R(255,i*.7,0);beginPath();arc(960+i*3*C(T),540+i*3*S(T),100,0,7);fill()}}

Aug 31 2021 3:27 AM UTC

}// 131/140

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Flower tunnel

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DataMeta

remix of d/8405 by u/DataMeta

function u(t) {

c.width=1920;p=Math.PI;r=Math.random();for(i=0;i<300;i++){x.fillRect(960+p*i*S(t+i*.9),540+S(t/7+i/p)*i*1.55925,T(t/2)*r*2+2,T(t+i)*r*2+2)}

Jun 5 2018 3:11 AM UTC

}// 139/140

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fireflies glitching

u/DataMeta

#glitch

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andrea270872

remix of d/17573 by u/andrea270872

function u(t) {

T=t%12
T>2?0:c.width|=0
x.font=(33+T**2)+'px A'
x.fillText('🐤',900+3*S(T*240)*T**3,600+2*C(T*221)*T**3)

Feb 12 2020 12:07 PM UTC

}// 104/140

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golfed a bit more :>

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davidsharp

function u(t) {

c.width|=s=600
p=(new Date).getSeconds()/10
with(x)lineWidth=9,beginPath(),moveTo(s,s),lineTo(s-Math.sin(p)*s,s+Math.cos(p)*s),stroke()

Oct 3 2019 11:26 AM UTC

}// 135/140

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tick

u/davidsharp

d'oh, I didn't even use the Dwitter sine/cosine functions

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taupelink

remix of d/15591 by u/taupelink

function u(t) {

for(i=d=e=f=1e3;i--;x.fillRect(d*z,e*z,f,f))[d,e,f]=[1+(r=1+Math.random(z=170)*9|0)+f*C(d)/(q=r%3+r/20),f*(1-S(f)/3)*(2-C(d+f)),q+.1/f]

Sep 1 2019 12:34 AM UTC

}// 135/140

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d/15593

u/DataMeta

I see people with elaborate headgear facing away or robots facing us
u/tomxor

hah, same, but not the robots

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ciaccodavide

function u(t) {

z=t*t
for(i=0;i<2;i++)
x.moveTo(960,540),
x.lineTo(960+C(z|z)*2e3,540+S(z|z)*2e3)
x.stroke()

Nov 15 2020 9:37 PM UTC

}// 92/140

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tactical_retard

function u(t) {

s=0|t%6*20
M=Math
for(i=s*s;i--;x.fillRect(X*(a=1920/s),Y*(b=1080/s),a,b)){X=i%s
Y=0|i/s
x.fillStyle=R((X^Y)/(2**M.ceil(M.log2(s))-1)*255)}

Mar 1 2022 3:24 AM UTC

}// 139/140

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xor texture zoom with correct brightness scaling based on resolution

u/tactical_retard

brightness = (x ^ y) / (2 ** ceil(log2(s)) - 1) * 255
u/tactical_retard

More correct version: x.fillStyle=R((X^Y)/(2**(s-1?0|Math.log2(s-1)+1:1))*255). It subtracts 1 from s because the maximum value the component of a coordinate can have is s - 1 (e.g. the maximum x value for a coordinate on a 1920x1080 display is 1919). It also uses a more reliable method for getting the bit count of a number, because apparently the one in the post is quite naive. I wrote this script to test different methods and found 3 perfect ones: https://ghostbin.com/6DkSj/raw
u/tactical_retard

new link: https://pst.klgrth.io/paste/q4pvr/raw , archive: http://web.archive.org/web/20220601015945/ht…