Dweets awesomed by u/S.T.L.K.R.

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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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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ETHproductions

function u(t) {

eval(unescape(escape`景爨挮睩摴栦㵩㴭ㄷ㭩⬫㰱㌻⥦潲⡪㴭ㄷ㭪⬫㰱㌻砮晩汬剥捴⠨ㄵ⭱⨨樭椩⤪㘴⭓⡴⨴⤪搬⠱㔫焪⡩⭪⤩⨴〫䌨琪㐩⩤ⰹⰹ⤩娽椾〦樾〿〺樼椿樺椬堽樭娬夽椭娬焽⴨堼㔦夼㔦ⵚ㰵⥼ㄬ搽焪㐪⡘⭙ⵚⴶ⤫㈴`.replace(/u(..)/g,"$1%")))

Dec 7 2018 7:08 PM UTC

}// 138/140

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#cube in a corner

u/ETHproductions

Based on a tweet which I've just realized is *not* by beesandbombs: https://twitter.com/jn3008_/status/107080665…
u/katkip

This is awesome
u/katkip

uncompressed: for(c.width&=i=-17;i++<13;)for(j=-17;j++<13;x.fillRect((15+q*(j-i))*64+S(t*4)*d,(15+q*(i+j))*40+C(t*4)*d,9,9))Z=i>0&j>0?0:j<i?j:i,X=j-Z,Y=i-Z,q=-(X<5&Y<5&-Z<5)|1,d=q*4*(X+Y-Z-6)+24
u/katkip

#illusion
u/joeytwiddle

#form_from_motion

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keithclark

remix of d/11328 by u/keithclark

function u(t) {

for(x.fillRect(0,0,j=2e3,j);j--;x.clearRect(C(j)*r+960,S(j*j)*r+540,k=r>>8,k))r=900/(4-(t+j/13)%4)

Dec 7 2018 11:15 AM UTC

}// 98/140

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Golfed down to 98 bytes

Show more comments…
u/keithclark

Also fixes some glitches in the original
u/keithclark

swap ,k=r>>8,k for ,r>>=8,r to save a byte (97)
u/keithclark

also r=900/(4-(t+j/9)%4) => r=j/(4-(t+j/9)%4) (94)
u/iverjo

Very nice #starfield
u/keithclark

for(x.fillRect(0,0,j=2e3,j);j--;x.clearRect(C(j)*r+960,S(j*j)*r+540,r>>=8,r))r=j/(7-(t+j)%7) (92)
u/jylikangas

for(x.fillRect(0,0,j=2e3,j);j--;x.clearRect(C(j)*r+960,S(j*j)*r+540,r>>=8,r))r=j/(7-t++%7)(90)
u/keithclark

nice!
u/keithclark

for(x.fillRect(0,0,j=2e3,j);r=j--/(7-t++%7);)x.clearRect(C(j)*r+960,S(j*j)*r+540,r>>=8,r) (89)
u/jylikangas

Yes!
u/vain

very nice!
u/384.cz

#starfield

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tomxor

function u(t) {

c.width=w=120
for(i=w*33;i--;x.fillRect(i%w,i/w*2,1,2))f=i%w+t*60,n=T(0|(i/w+f^f-i/w)/(t**.7+6)),x.fillStyle=R((n&1)*i/n/8,n**n,(n&3)*i/n/4)

Nov 3 2018 5:53 PM UTC

}// 140/140

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#retro #fractal #game

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u/tomxor

For the lazy game designer... Just add chip tunes and a player :D
u/tomxor

#crt #degauss #sidescroller
u/magna

Awesome!
u/magna

I had a RGB CRT setup, but I hadn't been able to fit any interesting patterns: d/7512
u/tomxor

I had a look at yours magna, they are true crt, much more realistic i think. The scan lines on this are just a sideeffect I exploited and it was easy to add colour distortion in the R().
u/magna

Here we go: d/10843
u/C010011012

is it a cellular automata?
u/tomxor

Yes and no, it's a fractal n=T(0|(i/w+f^f-i/w)/(t**.7+6)) which is just a more elaborate variation of serpinsky triangles to produce more interesting patterns. Some fractals are automata, but not all automata are fractals, see here: https://en.wikipedia.org/wiki/Rule_90
u/tomxor

The implication is serpinsky triangles are computationally reducable, meaning it does not have to be computed in the same way as a cellular automata i.e state can be computed at step t directly without traversing intermidiate steps.

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f8f82804

remix of d/10810 by u/f8f82804

function u(t) {

for(c.width=s=320;s-=64;x.stroke())for(k=5;k--;)for(n=7;n--;x.lineTo(160+3*z*r*C(p),z*'034743'[n]))r=n%3>0,z=s/2/(6+r*S(p=n%4/1.6+1.26*k-t))

Nov 2 2018 5:36 PM UTC

}// 140/140

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#wireframe #d3 #perspective #decahedron #d10 #pentagonal #trapezohedron

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Xen

remix of d/637 by u/iverjo

function u(t) {

//for(c.width|=i=66;i--;x.stroke())d=(i+t*t)%66,I=C(d*.4)>0?1:0,x.beginPath(x.lineWidth=17),x.arc(1e3,540,I?d*22:1394-d*22,0,7)

Nov 2 2018 5:34 PM UTC

}// 127/140

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Extreme seizure warning, please please be careful!

u/anotherkitten

man this really messes with the eyes

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Xen

function u(t) {

x.beginPath(x.fillStyle=`hsla(${t*99},90%,50%,.01)`),x.fill(x.arc(1e3,500,600+C(t)*500,t*3,-t))

Nov 1 2018 8:45 PM UTC

}// 95/140

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f8f82804

remix of d/10805 by u/f8f82804

function u(t) {

c.width=480;for(i=6;i--;x.lineTo(a=240+S(p)*z,b=2*z-150),x.font=z/4+'px a',i&&x.fillText('🔥',a-z/8,b))z=600/(4+C(p=t-2.5133*i));x.stroke()

Nov 1 2018 6:19 PM UTC

}// 138/140

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#perspective #pentagram #witchcraft #iknowitsnovember

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pavel

remix of d/10801 by u/f8f82804

function u(t) {

c.width=480
for(k=5;k--;)for(n=7;n--;x.lineTo(240+99*r*S(p=(n<4?n:n-4)/1.6+1.26*k-t),50*r*C(p)+70*(n<4?n:6-n)))r=n%3>0
x.stroke()

Oct 31 2018 8:52 PM UTC

}// 129/140

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u/f8f82804

amazing! #wireframe #d3 #perspective #decahedron #d10
u/f8f82804

oops, looks like this doesn't use any perspective transfrom
u/iverjo

Nice!
u/f8f82804

#pentagonal #trapezohedron

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yonatan

remix of d/10782 by u/yonatan

function u(t) {

for(i=c.width=99;i--;T=(j,t)=>S(j*j+i/j-t*7)+C(j**5-i/j*7+t)**3)for(k=j=56;j-->-k;x.fillRect(i,a,1,(j>0)*T(j,t)*j/k-q*q))q=T(a=j/2+30,0)/j*2

Oct 31 2018 11:54 AM UTC

}// 140/140

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Show more comments…
u/katkip

i love your #realistic design
u/jylikangas

YES!
u/aleamb

OMFG!
u/yonatan

:O https://twitter.com/aemkei/status/1057749002…
u/lionleaf

#landscape #water #mountains #real
u/sigveseb

Full-on insanity
u/iverjo

So good!
u/katkip

#d3
u/joeytwiddle

#scene
u/vain

beautiful work! titanic, iceberg ahead
u/jdspugh

Amazing!

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