Dweets awesomed by u/eviltoad

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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Current theme challenge: #Opposites

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Xen

remix of d/3577 by u/cantelope

function u(t) {

for(w=(i=c.width|=0)/2;i--;x.fillRect(w+S(p+t)*i/Z*w,540+S(g+t)*6e5/Z,s=9e6/Z/Z,s))Z=1800+C(p=(b=i-w)/(S(t)*w)*(b<0?-1:1)*C(g=b/w+t)*t)*b

Nov 27 2017 2:45 PM UTC

}// 137/140

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BriSeven

function u(t) {

t<0.1?(x.x=0, x.y=1200,j=11):null;
for(i=0;i<10;i++)m=t*2,
x.fillRect(x.x+i*200, x.y, 5, 5);
x.x+=4*S(C(m)*j), x.y+=4*C(S(m)*j);

Nov 8 2017 11:11 AM UTC

}// 130/140

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change j for different patterns

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xem

remix of d/3325 by u/xem

function u(t) {

for(i=0;i<65;i++)for(j=0;j<65;j++)x.fillStyle=R(i*9,j*9,C(t)*99),x.fillRect(900+400*S((i+t/9)*3)*C((j+t/9)*1.5),500+400*S((j+t/9)*1.5),5,5)

Oct 21 2017 9:43 AM UTC

}// 139/140

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Some kind of Jupiter-y, Easter-egg-y thing?

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Xen

function u(t) {

Z=4
for(Y=(X=(s=330)*2)/2,n=i=39;i--;X+=C(t)*n+s/n+6,Y+=S(t)*n+s/n+6)x.fillRect(X,Y,s*=.95,s),x.fillStyle=`hsla(${s*t*Z},99%,50%,.07)`

Sep 11 2017 8:44 PM UTC

}// 134/140

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Raise 'Z' as high as you dare...sit back and stare fullscreen.

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Xen

remix of d/3143 by u/nystrand

function u(t) {

with(x)for(translate(t?C(t):i=m=990,t?0:540),i=m;i--;fillRect(-m,i+z,3e3,2+z/i))fillStyle=R(z=m/((i*i-t*i)%m),rotate(-T+(T=i+S(t))),z*9,.1)

Sep 3 2017 1:34 AM UTC

}// 139/140

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few tweaks to the original...

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donbright

remix of d/3119 by u/Xen

function u(t) {

x.globalAlpha=.008
半=500
x.fillRect(0,0,i=w=2e3,w)
for(i=(3e3);i--;)x.clearRect(frame*(i*i-(j=t*i%frame)*j)/(b=j*j+i*i),999-2*i*j*i/b,2,4)

Aug 29 2017 9:24 PM UTC

}// 138/140

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thx Xen

u/Xen

Welcome ;-)
u/Xen

i just remixed your remix of my remix of your dweet, trying to message you, find me @xen_the
u/alien

wow

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donbright

remix of d/3115 by u/joeytwiddle

function u(t) {

东=122,北=123;for(i=999;i--;){j=(东*i)%frame-frame,k=北*i/frame-frame,b=j*j+k*k,r=j*j-k*k,g=2*j*k,x.fillRect(900+i*r/b,400+i*g/b,3,3)}

Aug 29 2017 4:05 AM UTC

}// 130/140

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"The Great Something"

u/donbright

oh, note, alter 东 and 北 to get different patterns.
u/joeytwiddle

H̀̕E̸͞ ̛̕͜C͡O̷M̷͜E̸͟S͢͜
u/Xen

n̎ͭͫ͐͛ͫ͌͂̇̾͆͋̍̾̈́ͨͤͨ҉͜͠o̷̶͛ͮ͗́̚͝ơͥ̆ͦͧ̇̅̋̅ͨͮ̃ͫ͂̌̐̓҉͏̵oͦ͂̂̅͑ͩͭ̒ͧ̀̚͠o̧ͤ͌ͩ̏ͨ͏͝

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artfarnaa

function u(t) {

 for (c.width|=a=200;--a;x.arc(960+S(G+t)*400,
 540+C(t+G*1)*400,a%2*137*Math.abs(S(t))*4,0,
 6.2832))x.moveTo(G=a/2|0,0)
 x.fill('evenodd')

Aug 8 2017 1:52 AM UTC

}// 140/140

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Show more comments…
u/kchplr

Great !
u/sigveseb

Awesome!
u/ninerdelta

stupid question, but why c.width|=a=200? I was tinkering with this code and just made it a=200 and the fps drops significantly.
u/kchplr

ninerdelta: I think that the reason is that c.width|=something is not only clearing the canvas but also the 2d context. Without it each iterations keeps adding arcs to the current path, by the 10th frames there are 2000 arcs to redraw, by the 50th frames there are 10000, etc. In a, err, "non-cold golfing codebase" you could avoid this by using beginPath and closePath.
u/kchplr

"cold golfing", superb. I meant code golfing...
u/ninerdelta

ah that makes sense, thanks!
u/donbright

now this is fine work

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raurir

function u(t) {

c.width=1920;p=92;for(n=0;n<p*p;n++){i=n%p,k=n/p|0,j=(k-p/2)/(p/2),r=C(t*3+(i+k)/9*C(t))*2*(1-j*j);x.fillRect(p+k*19,p+(i-r*r)*9,19,3)}

Aug 2 2017 1:08 PM UTC

}// 135/140

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My take on Unknown Pleasures

u/raurir

Thanks to xen!
u/cantelope

cloth physics in 135b!
u/Xen

i bet you could beat 100bytes ;)
u/raurir

140 is the target, mission accomplished. You're welcome.
u/joeytwiddle

#cloth #material

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p01

function u(t) {

for(x.beginPath(i=1,q=t*99&124);i-=1/32;c.style.filter='invert(')x.lineTo(600+i*720,99+q*7-(x+i).charCodeAt(i*q*q%19)*S(i*3)**19);x.stroke()

Jul 27 2017 9:31 PM UTC

}// 140/140

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JOY-DIVISION

Show more comments…
u/p01

Best seen in fullscreen while listening to JOY DIVISION by UNKNOWN PLEASURES
u/p01

for the code golfers around, I got this one down ~112bytes without the colors and less interesting noise
u/raurir

Well, I guess it's the thought that counts
u/p01

Thanks for bringing up JOY DIVISION on Slack - https://www.dwitter.net/d/2108 is super well done as well.
u/magna

Is there a Slack for Dwitter?
u/FireFly

There is a general JS golf slack with a lot of dweeters in it at jsgolf.club
u/sigveseb

kinda reminds me of life on the grid from solskogen this year: http://www.pouet.net/prod.php?which=70987
u/rodrigo.siqueira

#joydivision Here is the original Ph.D. dissertation page where this were published: https://twitter.com/ChristiansenJen/status/1…

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