Dweets awesomed by u/prplz

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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katkip

function u(t) {

c.width*=1;s=5;x.translate(950,540);for(i=200;i--;)x.strokeRect(-i*s,-i*s,i*s*2,i*s*2),x.rotate(T(t/2)/99)

Feb 2 2019 5:33 PM UTC

}// 106/140

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Spinning

u/cantelope

dem moiré patterns!
u/katkip

#moire

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thorbear

function u(t) {

i=2e3,x.fillRect(0,0,i,i),u=v=t,d=1.4,s=400,x.globalAlpha=.01;for(;--i;)w=d*S(d*u)-S(d*v),v=d*C(d*u)+C(d*v),u=w,x.clearRect(s+s*u,s+v*s,4,4)

Jan 31 2019 9:05 PM UTC

}// 140/140

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spacetractor

u/thorbear

#attractor

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rodrigo.siqueira

remix of d/11965 by u/pavel

function u(t) {

for(x.fillRect(0,0,i=3e3,i);Q=S(--i*i);x.clearRect(960+150*(S(b)*4+S(i+t)*Q),540+150*(C(i*i)-(t%4>2?T(b+t):S(b+t))),4,4))b=i%6+t+(t%2>1?0:i)

Jan 28 2019 2:40 PM UTC

}// 140/140

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Torus, spheres, flow and bubbles

Show more comments…
u/rnbw

now THIS is a demo!
u/katkip

Yeah he win
u/13thptr

woah
u/joeytwiddle

Superb! Golf the end with i*(t%2>1) or i*!(t&1)
u/rodrigo.siqueira

Thanks @joeytwiddle for the golf trick. i*(t&1) also works and it's even shorter. And I found that t%4>2?... can be converted to t&2?... It works as a counter to change the function each 2 seconds.
u/yonatan

Also, since T and S take the same arguments (t%4>2?T(b+t):S(b+t)) can be (t&2?T:S)(b+t)
u/lionleaf

Wow! Now we're talking
u/vain

Wow, three fx in this tiny code? Great!

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firegodjr

remix of d/9768 by u/firegodjr

function u(t) {

x.font='3em x'
for(m=j=32;j--;)for(i=63;i--;)x.fillText('◢◣◤◥'[Math.random()*4|0],i*m,j*m),x.fillStyle=R(b=(t*m+(i^(t*m-j)))%99*2)

Jan 26 2019 8:01 PM UTC

}// 130/140

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Fractal Burn

u/joeytwiddle

Noisy triangles remind me of this: https://twitter.com/BalintCsala/status/99216…

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pavel

remix of d/11836 by u/cantelope

function u(t) {

with(x)for(c.width|=j=50;--j;stroke())for(Z=.2+j-3*t%1,lineWidth=1+50/Z/Z,beginPath(i=7);i--;)arc(960,540,1e3/Z,a=(2.513*i+Z/7+t/2)%6.283,a)

Jan 23 2019 2:40 AM UTC

}// 140/140

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Uncompressed

u/cantelope

amazing remix, as always :D
u/cantelope

was wondering where you've been.. i shudder to think what you can make within 1kb. feel free to remix my work on codegolf.tk if you like.
u/pavel

Thanks man! I was on vacation in New Zealand for a month with just my phone. I'll check out codegolf.tk, I do like optimizing down to 140.
u/pavel

#uncompressed

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katkip

remix of d/11885 by u/katkip

function u(t) {

seed=4
c.width*=1;for(i=43;i--;)for(j=71;j--;)
x.fillRect(j*30+S(i/seed+t)*100-100,i*30+C(j/seed+t)*100-100,30,30)

Jan 19 2019 6:50 PM UTC

}// 114/140

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It is going up. To go down, change seed=0.02

u/katkip

Haha, this got 20 likes
u/Xen

seed=5+C(t)*2
u/katkip

The perfect straight one is seed=.0123
u/katkip

44 likes om!
u/vain

Very cool and smooth looking fx

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Xen

function u(t) {

for(i=99;i--;)x.fillRect(1e3+C(t*i)*t*59,540+S(t*i)*t*59,t,t)

Jan 18 2019 6:47 PM UTC

}// 61/140

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Big Bang

u/metamero

Awesome!
u/DataMeta

Niiice! Wallpaper worthy
u/katkip

It has that black line error in the right

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prplz

remix of d/11836 by u/cantelope

function u(t) {

for(c.width|=j=9;j--;)for(x.beginPath(Z=9+(j-t*3)%9),x.lineWidth=9/Z,i=6;i--;x.stroke())x.lineTo(960+S(p=2.513*i+Z/5)/Z*960,540+C(p)/Z*960)

Jan 16 2019 12:38 PM UTC

}// 139/140

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decompression attempt

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metamero

remix of d/11818 by u/metamero

function u(t) {

document.body.outerHTML=t?s+=` ИИ NN`:s='<p style=line-height:.6;font-size:25px;font-family:monospace>'

Jan 15 2019 2:24 PM UTC

}// 105/140

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ИИ NN Zöllner Illusion

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metamero

function u(t) {

oremâtem='‮<p style=padding:1em;font-size:42px>‮ȯ̇̉rͬeͤm͓ͭaͭ̌͛tͥeͦmͩ';document.body.outerHTML=oremâtem

Jan 15 2019 1:02 PM UTC

}// 103/140

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u/katkip

? i don't understand the code
u/katkip

oh, ...

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