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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BriSeven

remix of d/564 by u/BriSeven

function u(t) {

if(!t)d=X=Y=a=255.88;for(i=d|0;--i;)x.fillStyle=R(S(a)*d,C(a+t)*d,S(-a)*d,.1),x.fillRect(X=9*S(a)+X&(d*8),Y=9*C(a)+Y&(d*4),8,8),a+=C(t*i*a)

Dec 30 2016 9:51 PM UTC

}// 139/140

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it looks like if you keep an accumulator variable in a feedback loop, you can get C to produce more random looking results. (except for at the very start.)

u/BriSeven

a+=C(t*i*a)
u/iverjo

Nice. Related dweet: https://www.dwitter.net/d/291

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TGY

function u(t) {

for(i=1e3;t<7&&i--;x.fillRect(960+S(i)*q,(1200/t/S(t/9))+C(i)*q,9,9))q=(2+S(i*6))*t**3,x.fillStyle=R(a=20*t*S(t/5),a,t*a)

Aug 27 2021 8:07 PM UTC

}// 121/140

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forget-me-not

u/TGY

#windows11 version 😉

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46uuuu

function u(t) {

x.strokeRect(j=t*199,j,j,j*8)

Jun 13 2026 11:57 PM UTC

}// 29/140

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#bridge (extreme 29 byte)

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katkip

function u(t) {

for(c.width|=i=9;z=400,i--;)for(j=3;j--;)x.fillStyle=`hsl(${j*100},99%,50%,.4)`,x.fillRect(z+i*99+S(t)*z+S(j*j*i+t)*9,z+C(j*j*i+t)*9,50,200)

May 11 2020 10:24 AM UTC

}// 140/140

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#default

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breakster

function u(t) {

n=10;N=n*n
if(!x.a)x.a=[1]
with(x)for(d=N;d--;){
s=a[d-1]+a[d+1]+a[d-n]+a[d+n]
a[d]=!s|s
fillStyle=R(a[d]*99)
fillRect(d*n,d%n*N,N,N)
}

Jan 13 2018 12:36 PM UTC

}// 135/140

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I tried something game of lifey, but I'm not there yet.

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taupelink

remix of d/27134 by u/taupelink

function u(t) {

eval(unescape(escape`景爨椽ㅥ㐻椭ⴻ砮晩汬剥捴⠱㘰⩘ⰱ㠰⩙ⱙ⨶⬲⩦☳ⱘ⨲⭦☳⤩堽椯㤪琥㄰⬱ⱙ㴳⬲⩃⡩⭴⤬昽⠨㘭夭匨堪䌨天⤩⨪㈭⡘ⴶ⤪⨲⤯㘬砮晩汬却祬攽恨獬⠤笱㤵ⵦ紬⑻㔰ⵦ⩦┱⨳ぽ┬⑻㜰⬱㔪䌨春㈩紥⥠`.replace(/u([^D].)/g,'$1%')))

Mar 2 2023 5:54 PM UTC

}// 139/140

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d/27140

u/Joachim

Coool

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taupelink

remix of d/29548 by u/taupelink

function u(t) {

f=(u,v)=>((u%v-v/2)**2-v*v/16)**2;g=n=>!(f((f(X,n)*f(Y,n))**.3,n)&29);for(i=1e4;i--;x.fillRect(480+40*X,60+40*Y,g(6),g(8)))X=i*t%24,Y=i*X%24

Feb 22 2024 4:10 PM UTC

}// 140/140

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d/29555

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Xen

remix of d/21378 by u/Pascal

function u(t) {

for(c.width=444,f=i=t|0;i--;)f=1+1/f
for(x.fillText(f,76,i=239),p=129;i--;x.fillRect(p-p*d*C(a=2*Math.PI*f*i),99-p*d*S(a),2,2))d=(i/399)**.5

Jan 23 2021 3:08 PM UTC

}// 140/140

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golfed to fit

u/Pascal

nice
u/danny@hille.dk

Nice
u/Xen

i can golf but not code lol
u/ciaccodavide

Nice!

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CliffJonesJr

function u(t) {

c.width=520
for(i=0;i<52;i++){
x.fillStyle=R(S(t)*150+i*2,S(t*2)*100+(150-i*2),C(t*3)*250)
x.fillRect(i*10,200+S(i*2+t*2)*100,9,200)
}

Dec 27 2017 2:27 AM UTC

}// 134/140

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KilledByAPixel

remix of d/14811 by u/KilledByAPixel

function u(t) {

eval(unescape(escape`𭀪🐶𜀻𬠽𫠽🡓𚁴𚡭𚠪𫠫𞐩𚠹𯀰𞱦𫱲𚁭🐵𞰭𛑭𞱸𛡬𪑮𩑗𪑤𭁨👲𚀶𚐯𜰬𮀮𬱴𬡯𪱥𚀩𚑦𫱲𚁸𛡢𩑧𪑮𤁡𭁨𚁫🐱𩐳𚐻𪰭𛐻𮀮𫁩𫡥𥁯𚀱𜠰𚠨𭀥𜐷𚐫𩠨𤰩𛀱𜠰𚠨𭀯𜐷𯀰𚐫𩠨𠰩𚐩𩠽𡠽🠴𚡲𚀴𚐪𡠨𬠨𜰩𚡫𛰹𞐩𚰳𚡲𚀵𚐪𡠨𬠨𜠩𚡫𛰹𞐩𛐶𜀻`.replace(/u../g,'')))

Jun 30 2019 2:22 AM UTC

}// 137/140

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Random Overlapping Spirographs

u/katkip

#compressed but awesome