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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.

Try the new frontend: beta.dwitter.net
Current theme challenge: #Opposites

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danny@hille.dk

remix of d/29104 by u/danny@hille.dk

function u(t) {

c.width=88;for(i=5e3;i--;)x.fillRect(X=i%88,Y=i/88|0,Math.hypot(X-44-C(t)*9,Y-24-S(t)*7)/(.3+.1*(.5+.5*S(9*Math.atan2(X-44,Y-24)-t)))/90,1)

Dec 11 2023 10:05 PM UTC

}// 139/140

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more golf & play

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baon

remix of d/29077 by u/baon

function u(t) {

for(c.width|=0,X=Y=0,p=i=12;i--;x.fillRect(970+400*X,840-400*Y,60,12))
X=i/p*2-1,Y=0.2*S(t+X*(i^p))**500

Dec 6 2023 7:59 AM UTC

}// 106/140

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u/rodrigo.siqueira

Explained by ChatGPT: "In this intriguing artwork of 12 straight segments, the artist orchestrates a visual symphony that resembles a whimsical Morse code, each line pulsating with erratic jumps, defying a predictable pattern. The dynamic interplay of upward and downward movements evokes a sense of rhythmic chaos, challenging the viewer to decipher an elusive message encoded within the undulating dance of lines. The deliberate randomness captures the essence of uncertainty and the unpredictable nature of existence, inviting contemplation on the enigmatic messages life presents. The piece stands as a testament to the artist's mastery in transforming simplicity into complexity, leaving the observer with a puzzle to unravel within the seemingly random fluctuations of these meticulously arranged segments."
u/baon

😂

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zachygreen

function u(t) {

t=0|t+1
if(t<7)
for(i=0;i<3**t;i++)
for(j=0;j<3**t;j++)
if(i%3==1&&j%3==1)
x.fillRect(i*1920/3**t,j*1080/3**t,1920/3**t,1080/3**t)

Dec 5 2023 1:59 AM UTC

}// 130/140

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zachygreen

function u(t) {

t=S(t)*60+61
c.width*=1
for(i=0;i<1980;i++){f=0
for(j=1;j<t;j++){f+=1/(2*j-1)*S((2*j-1)*i/100)*100}x.fillRect(i,540-f,1,10)}

Dec 3 2023 7:55 AM UTC

}// 124/140

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danny@hille.dk

function u(t) {

for(i=2e3;i--;)x.fillRect(i,t*60,.2,S(t-i/60)*t^C(t+i/60)*t)

Nov 30 2023 8:05 PM UTC

}// 60/140

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u/Xen

sexy af!

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rodrigo.siqueira

remix of d/28993 by u/rodrigo.siqueira

function u(t) {

Z=740/t+t
K=!t||K+2
for(i=2e3;i--;x.fillStyle=R(Z,Z/t*2,K/9),x.fillRect(i,K-Y,1,3))Y=C(S(i/Z)*t)**2*Z,x.fillStyle=R(0),x.fillRect(i,K,1,-Y)

Nov 29 2023 2:37 AM UTC

}// 139/140

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Colorful lines - also no visible lines behind :-)

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taupelink

remix of d/28934 by u/taupelink

function u(t) {

eval(unescape(escape`景爨椽㈴〻椭ⴾㄸ〪琻砮晩汬⡸⹳瑲潫攨⤩⥸⹢敧楮偡瑨⡸⹦楬汓瑹汥㵛✣䘵㘱✬✣ㄳ㜱✬✣䙄䈱❝孩┸┳崩ⱸ孩☷㼧慲挧㨧牥捴❝⡩┹⨲㐰Ⱪ┷┵⨲㐰Ⱪ⽴⨪琬樽椪㌬樫㈫椥ㄮ㜵⨲⤬砮汩湥坩摴栽琪⩴`.replace(/u([^D].)/g,'$1%')))

Nov 24 2023 8:04 PM UTC

}// 140/140

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d/28944

u/taupelink

Created in iOS/Safari. In Windows/Chrome, when not in fullscreen, it looks like there's a stronger Moire effect.
u/MonteChristo

How !!!
u/taupelink

Well, I can say it's far, far more trial-and-error than by design :)

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Xen

remix of d/28876 by u/xyper

function u(t) {

c.style="filter:invert("
for(i=490;i--;x.strokeRect(799+S(i+t)*i*4,399+C(i+t)*i*2,i,i))x.strokeStyle=R(i,i*2,255,.5)

Nov 17 2023 7:34 PM UTC

}// 116/140

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bang a lil remix.... Star about die.

u/Xen

#warm
u/xyper

it looks like a black hole, but without, yknow, the hole
u/DataMeta

or maybe a star about to be born from nebula hot gas and dust! :D

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xyper

function u(t) {

a=b=800;c=[500,0,0,800,999,800];for(i=0;i<99;i++){f=~~(Math.random()*3);a=a+(c[f*2]-a)/2;b=b+(c[f*2+1]-b)/2;x.fillRect(a,b,1,1)}

Nov 15 2023 11:09 AM UTC

}// 128/140

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sierpinski triangle thing i made, took way too long and is probably super unoptimised

u/Xen

nicely done!
u/rodrigo.siqueira

Simple optimization to reduce 6 chars: c=[500,0,0,a=b=800,1e3,b]

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danny@hille.dk

remix of d/28848 by u/danny@hille.dk

function u(t) {

for(c.width=i=170,t*=4;i--;)for(j=99;j--;)x.fillRect(i,j,m=(i&t&j&t)%(t/4),1/m)

Nov 11 2023 4:59 PM UTC

}// 79/140

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really fu... up remix

u/Xen

this is love!