Dweets awesomed by u/dull_pixel

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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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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f8f82804

remix of d/11919 by u/mxfh

function u(t) {

for(c.width|=i=384;i--;x.fillRect(960-w/2+e,4*i,w+e,4)){y=i/80-2;w=y>.7?3e3:(1-y*y)**.5*640;e=T(t/9+i*w);x.fillStyle=`hsl(${-y}rad 99%50%)`}

Jan 24 2019 8:12 PM UTC

}// 140/140

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#minimal #outrun #glitch #sunset

u/f8f82804

d/11931
u/pavel

Omitting the space in 99%50% does not work in Safari, everything is black.
u/f8f82804

yeah safari stinks
u/f8f82804

try "for(c.width|=i=384;i--;x.fillRect(960-w/2+e,4*i,w+e,4))y=i/80-2,w=y>.7?3e3:(1-y*y)**.5*640,e=T(t/9+i*w),x.fillStyle=hsl(${-y}rad 99% 50%)" which should work and is still <140
u/bekfast2390

easrdfghj

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katkip

remix of d/11741 by u/katkip

function u(t) {

c.width^=0;for(i=800;i--;)x.lineTo(960+S(i*S(i)+t/9)*500,540+C(i*S(i)+t/9)*500);x.fill()

Jan 11 2019 2:46 PM UTC

}// 88/140

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#earth planet

u/13thptr

woah
u/username

does not look like earth though
u/joeytwiddle

It does look like a #planet though. Cool effect for 88
u/katkip

That line in the middle looks a bit like Rusia
u/magna

Awesome technique! You could potentially add a way to "seed" the generation with a number and then search for a seed that resembles the Earth the most using brute-force.

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jylikangas

function u(t) {

with(x)for(fillRect(0,0,2e3,2e3),fillStyle="#ccc",shadowColor=R(i=9);i--;fillRect(512+i*99+X/4,400,50,200))X=shadowBlur=(1+S(i/2+t*4))*40

Dec 9 2018 5:18 PM UTC

}// 137/140

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Grey #default

u/lionleaf

That's amazing!
u/joeytwiddle

mmm milky
u/Koi

So satisfying
u/vain

very cool

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veubeke

function u(t) {

c.width^=0
x.font='6em"'
for(i=9;i--;x.fillRect(25,0,50,200))x.setTransform(1,0,0,-1,(5+i)*99,(600-(t>i&&t-i)**9)),t>i&&x.fillText('🔥',0,0)

Dec 9 2018 11:35 AM UTC

}// 139/140

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#default #rockets

u/jylikangas

Awesome! :D
u/katkip

#genius
u/Xen

Love it!
u/aleamb

Lol!
u/lucio

Now make the booster land back :-)

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katkip

function u(t) {

c.style.background='#eee';c.width=400;for(n=900;n--;)x.lineTo(200+S(n*n+t)*200,114+C(n*n+n)*200);x.fill()

Nov 26 2018 2:38 PM UTC

}// 105/140

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Electricity

u/Xen

Nice!
u/katkip

Yep
u/aleamb

fucking awesome!

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pavel

function u(t) {

c.width=-1;i=t%9;with(x){for(j=9;j>i;moveTo(X=i*35,84))fillText(' Awesome!'[j],35*j--,87);fillStyle='#fe0';fill(arc(X,84,9,a=S(i*3)**2,-a))}

Nov 21 2018 8:34 AM UTC

}// 140/140

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Awesome #pacman

u/jylikangas

Awesome!
u/magna

Pacman!

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prplz

remix of d/11028 by u/iverjo

function u(t) {

throw' '.repeat(t*9%18)+'▌▌▌▌▌▌▌▌▌'

Nov 18 2018 11:57 AM UTC

}// 35/140

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anotherkitten

function u(t) {

e=(a,b)=>a/b&1?b-a%b:a%b;x.fillRect(0,0,j=2e3,j);x.globalAlpha=.1;for(;j--;x.clearRect(e(t*360*S(b),1911),e(t*360*C(b),1071),9,9))b=j/1200

Nov 9 2018 6:36 PM UTC

}// 138/140

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faster and cleaner version of linear ripple

u/katkip

I love this one!
u/iverjo

#waitforit

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rodrigo.siqueira

remix of d/10900 by u/pavel

function u(t) {

for(c.width=840,s=300;s-=12;)
for(t+=.15,Q=t%4,i=6;i--;)
x.lineTo(400+s*S(A=(Q*(Q<1)+i)*1.57),25+s/2*(C(A)+2))
x.stroke()

Nov 9 2018 2:37 AM UTC

}// 121/140

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Spinning pyramid

u/katkip

That looks awesome
u/katkip

#pyramid

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