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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: #Food

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rodrigo.siqueira

remix of d/12968 by u/rodrigo.siqueira

function u(t) {

c.width+=0
for(var i=1e3;i=i-.25;){
var K=(i&2)-S(t)
var X=K*S(i)/2+S(40*i+t)
var Y=C(i)/2-C(40*i-t)*K
x.fillRect(960+X*180,520+Y*180,4,3)
}

Apr 4 2019 12:12 PM UTC

}// 140/140

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Two dancing torus. "var" is not needed, but performance (fps) is better with them.

u/username

But if you do not specify anything, it will be a var anyway?
u/yonatan

It'll be global, which means it can be accessed outside of the u() function, which kills some compiler optimizations

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Xen

remix of d/12416 by u/Xen

function u(t) {

x.fillRect(!x.rotate(1),t,4e3,1)

Apr 1 2019 10:26 PM UTC

}// 32/140

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32byte moire,, t/3e3 looks better on rotate but no room sorry

Show more comments…
u/vinca

I like this minimalism.
u/Xen

it was also posted 34 minutes before my 32nd birthday, i timed it wrong lol
u/DataMeta

As the saying goes, less is mo(i)re ;P
u/DataMeta

As the saying goes, less is mo(i)re ;P
u/katkip

#moire
u/metamero

i loved this one (and datameta's comment). i got 30B on a (much simpler) circular moire pattern d/12993

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andy

function u(t) {

for(c.width|=d=e=0,f=1e3;f--;h=d,d=e-(!!d|d>>31)*Math.abs(C(z=t/9)*d-S(z))**.5,e=C(z)+4-h,x.fillRect(d*50+800,e*50+400,t&3?5:50,t&1?3:50));

Mar 30 2019 10:29 PM UTC

}// 139/140

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u/magna

#glitch

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katkip

remix of d/12920 by u/andy

function u(t) {

for(c.width|=i=896;i--;)q=(m=2.4*i)**(t/9),s=m/40,f=(S((m*t/4e4)*i)+1)/16*i,x.beginPath(),x.arc(q*S(m)*s+960,q*C(m)*s+540,f,0,7),x.fill();

Mar 29 2019 7:39 PM UTC

}// 139/140

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Explosion

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jviide

function u(t) {

c.width=1920
x.translate(960,540)
for(i=1089;i-=11;)x.rotate(2+i+t/25),x.fillStyle=i%2?"#fff":R(50000/i),x.fillRect(-i,-i,2*i,2*i)

Mar 27 2019 8:08 PM UTC

}// 130/140

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eph_aim

remix of d/12877 by u/katkip

function u(t) {

q=0.01;t||(K=X=Y=0);for(i=999;i--;)x.fillRect(960+S(Y*q)*(2-X),540+C(Y*q)*(200-X),2,2),X+=C(Y*2)*9,Y+=S(X/(K/99+99))*111,K++

Mar 26 2019 12:06 AM UTC

}// 124/140

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Dragon Eye

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katkip

remix of d/12876 by u/katkip

function u(t) {

q=4;t||(K=X=Y=0);for(i=999;i--;)x.fillRect(960+S(Y*q)*(200-X),540+C(Y*q)*(200-X),2,2),X+=C(Y*5)*9,Y+=S(X/(K/99+99))*9,K++

Mar 24 2019 2:42 PM UTC

}// 121/140

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#attractor creates pentagram. sadly, it is pointed to hell

u/katkip

#satan

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Jezza

remix of d/12739 by u/LimeLaser

function u(t) {

c.width|=r=Math.random,Z=2e3;p=t?p.map(([i,j,u,v]=[Z*r(),Z*r(),4*r()-2,4*r()])=>[(i+u+Z)%Z,(j+v)%Z,u,v,x.fillRect(i,j,8,8)]):[...Array(4e3)]

Mar 14 2019 11:09 PM UTC

}// 140/140

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Squeezed in some snow that floats left. ❄️❄️❄️

u/tomxor

Left!? Blasphemy! :P
u/katkip

This is so smooth
u/LimeLaser

Nicely done!
u/iverjo

#snow

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danny@hille.dk

remix of d/12686 by u/danny@hille.dk

function u(t) {

for(c.width|=i=0;i<66;)x.fillRect(960+S(t+(i*3))*99,i++*17,99,17)

Mar 7 2019 11:31 PM UTC

}// 65/140

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katkip

remix of d/12507 by u/katkip

function u(t) {

x.lineWidth=30;x.fillStyle='lime';if(t<6)x.fillRect(960-310+t*99+S(t)*99,540-75,60,150);x.strokeRect(960-325,540-75,650,150);

Feb 24 2019 9:01 AM UTC

}// 125/140

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u/joeytwiddle

#loading