Dweets awesomed by u/ds0

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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batboy

function u(t) {

t==0?x.fillRect(0,0,1e5,1e5):0;
x.fillStyle="#fff"
for (i=0;i<100;i++)
x.fillRect(t*100,S(t)*100+540+(i%2==0?1:-1)|i*Math.random()*t,4.5,1)

Mar 18 2019 5:17 PM UTC

}// 139/140

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bridges

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katkip

remix of d/12812 by u/New_Core

function u(t) {

x.fillRect(0,0,b=c.width=160,b)
for(i=2e3;i--;x.fillRect((i/1.4)%b,S(i/999+C(t-i/12)/9)*90,1,a))a=5+2*S(i/5+t),x.fillStyle='#f14'

Mar 18 2019 12:56 PM UTC

}// 129/140

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More pewdiepieier lines

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vinca

function u(t) {

c.width|=0,F=(e=>{0!=e&&(x.beginPath(),x.arc(1e3+50*C((t+.1*e)%6.4),500+45*S((t+.13*e)%6.4),9*e,0,6.1),x.stroke(),F(e-2))}),F(130)

Mar 18 2019 3:42 AM UTC

}// 130/140

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andrea270872

remix of d/12771 by u/andrea270872

function u(t) {

c.width|=K=1e3
A=[(t*97%11-5)*K,(t*89%13-6)*K,0]
P=t?P.map(([i,j,z,v])=>[i,j,(z+1)%99,x.fillRect(K+i/z,500+j/z,z,z)]):[A]
P[K]||P.push(A)

Mar 15 2019 7:44 PM UTC

}// 137/140

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Build-up!

Show more comments…
u/Xen

love it
u/pavel

103 for(c.width|=K=k=1e3;k--;z>0&&x.fillRect(K+(k*97/60%11-5)*K/z,500+(k*89/60%13-6)*K/z,z,z))z=(60*t-k)%99
u/pavel

Looks like the code you started with used Math.random at each step which made the ultimate position of each square at time 't' impossible to determine directly. Switching to instead use any function of just t makes it quite simple so there is no need to initialize stuff at time 0 and keep it updated.
u/pavel

I learned that in d/11421 to save chars and make d/11424
u/andrea270872

great. thanks very much
u/andrea270872

In my head I was thinking also that t*97%11 is a pseudo-random generator...
u/katkip

Satisfying

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yokljo

remix of d/12758 by u/yokljo

function u(t) {

c.width|=0
X=C(t)+16
Y=S(t)+9
x.beginPath()
x.lineWidth=9
for(i=9;i--;)Z=S(Y),Y+=C(X),X+=Z-S(t),x.lineTo(X*60,Y*60)
x.stroke()

Mar 15 2019 10:29 AM UTC

}// 126/140

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Jezza

remix of d/12736 by u/Jezza

function u(t) {

x.fillRect(0,0,1920,1080);X=C(t/2)*6+16;Y=S(t/2.1)*6+9;x.globalAlpha=.05;for(i=99;i--;)Z=S(Y),Y+=C(X),X+=Z,x.clearRect(X*60,Y*60,5,5)

Mar 15 2019 12:30 AM UTC

}// 133/140

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Shoutout to @katkip for #attractor rabbit hole.

Show more comments…
u/tomxor

wow
u/katkip

Nice
u/aleamb

yeah!
u/jick

Wow!
u/lionleaf

That's amazing!
u/lionleaf

#grid
u/sigveseb

Rad
u/vain

How? So beautiful and impressive

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spaceman_blanc

remix of d/5603 by u/Xen

function u(t) {

t?x.fillStyle=`hsla(${t*Z*30},69%,65%,1)`:x.translate(950,Z=540)
for(i=199;i--;x.rotate(t/(Z-i)))x.fillRect(i*8-1e3,-1e3,2,1e3)

Mar 4 2019 9:50 PM UTC

}// 127/140

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Sickly spirals

u/Xen

Nice one
u/aleamb

cool

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DataMeta

remix of d/12586 by u/Xen

function u(t) {

for(c.width|=i=135;i--;x.arc(960+C(t*27+i/(t/9+99))*9,540+S(t*9+i/3)*6,i/.9*t%1111,0,x.lineWidth=7))x.beginPath(x.stroke())

Mar 3 2019 1:08 AM UTC

}// 123/140

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resonance

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u/DataMeta

big up to original
u/DataMeta

modify 'i' for different effects
u/sigveseb

#waitforit
u/Xen

Nicely done mate
u/magna

keeps on giving!
u/lionleaf

I was waiting for it pop like a balloon

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Xen

remix of d/12583 by u/Xen

function u(t) {

for(c.width|=i=135;i--;x.arc(960+C(t*27+i/(t%8+2))*9,540+S(t*29+i/3)*9,9*i,0,x.lineWidth=9))x.beginPath(x.stroke())

Mar 1 2019 10:31 PM UTC

}// 115/140

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katkip

function u(t) {

x.fillRect(0,0,2e3,2e3);t||(a=0);for(i=400;i--;)x.clearRect(960+S(a-t)*500*C(a)*S(a+t),540+C(a-t)*500*C(a+t)*S(a),i/10,i/10),a+=C(i/2+t)/3

Mar 1 2019 8:33 PM UTC

}// 138/140

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Acceleration

u/sigveseb

Very fluid

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