Dweets awesomed by u/yokljo

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.

Try the new frontend: beta.dwitter.net
Current theme challenge: #Opposites

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nystrand

function u(t) {

for(i=c.width+=0;q=--i/3|0;x.lineTo(a*w+1e3,b*w+540))[a,b,z,w=(z+4)*89]=t&7?x[q]:[C(t*i),i%5?1:-1,2*i%4-1],x[q]=[b+a/99,z,a-b/99];x.stroke()

Aug 19 2017 3:23 PM UTC

}// 140/140

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u/donbright

nice work

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nystrand

function u(t) {

for(i=c.width+=0;i--;x.fillRect(a*w+1e3,b*w+540,m=w/9-9,m))[a,b,z,w=(z+9+T(t))*19]=t?x[i/3|0]:[S(i),C(i),6*i%8-3],x[i/3|0]=[b+a/77,z,a-b/77]

Aug 19 2017 1:34 PM UTC

}// 140/140

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u/iverjo

Respect!
u/joeytwiddle

Wow!
u/cantelope

unreal!
u/n0va

Impressive!
u/FireFly

This one is really cool! Keep it up! :)
u/p01

👍
u/donbright

oh man!!!
u/nystrand

thanks for all the nice comments!
u/13thptr

#d3 #perspective

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statenlogic

function u(t) {

for(c.width=d=300,e=2e3;e;a=C(e)*C(d+t),b=S(e),z=C(e)*S(d+t),q=6e3/(z+100),x.fillRect(a*q+150,b*q+85,r=z>-.1&&2+5*z**4*(a+b),r))d+=e-=.5

Aug 16 2017 8:21 PM UTC

}// 136/140

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u/sigveseb

Stellar!
u/sigveseb

The shading!
u/magna

WOW!
u/donbright

epic win
u/statenlogic

Thanks guys. It's my first dweet.
u/cantelope

this is one of the most amazing dweets i've ever seen. gr8 job!
u/nystrand

really nice first dweet!
u/n0va

I realy like this one, welldone!
u/iverjo

#sphere
u/joeytwiddle

#lighting #shading

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tibbifox

function u(t) {

W=c.width=1000;v=(X,Y,R)=>[S(Y+t)*C(X+t)*R+500,S(X+t)*C(Y+t*.5)*R+250]
for(i=0;i<300;i++)
x.lineTo(...v(S(t/100)*i,i/2,i*S(t)))
x.stroke()

Aug 16 2017 6:51 AM UTC

}// 138/140

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yokljo

function u(t) {

t==0?w=c.width=100:d=x.getImageData(0,0,w,w);for(a=256;a--;d.data[a*~~(S(t*w/a)*w)]=a);x.putImageData(d,0,0)

Aug 12 2017 10:50 PM UTC

}// 108/140

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This does some whack stuff on my desktop Chrome, which you may see if you attempt to edit the code (put a space at the end or something)

u/yokljo

Here is the minimum requirements for the weird Chrome bug to occur: t<.1?w=c.width=100:d=x.getImageData(0,0,w,w);x.putImageData(d,0,0)

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leonarven

function u(t) {

P=[k=[w=1920,h=1080],[0,h],[w/2,0]];while(w--)k=[(k[0]+(p=P[Math.round(Math.random()*2)])[0])/2,(k[1]+p[1])/2],x.fillRect(k[0],k[1],1,1)//:)

Aug 9 2017 3:42 PM UTC

}// 140/140

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My first one, written with mobile phone only. Not really handy :)

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yokljo

remix of d/3040 by u/Xen

function u(t) {

c.width=99;for(i=2e2;i--;x.fillStyle=R(i*S(t)*5,i))x.fillRect(40+T(i+t*5)*10,30+S(i+t*5)*8,X=C(t*2+i)*4,X/2),x.fillText('ylophone',55,33)

Aug 9 2017 2:52 PM UTC

}// 137/140

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u/Xen

I approve! :D lol

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Xen

function u(t) {

c.width=99;for(i=2e2;i--;x.fillStyle=R(i))x.fillRect(50+T(i+t)*8,30+S(i+t)*8,X=C(t+i)*4,X/2),x.fillText('EN    Shoutz 2 CodeGolfTeam',74,33)

Aug 8 2017 10:33 PM UTC

}// 140/140

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u/sigveseb

This one is pretty cool!
u/magna

You can shave a lot of bytes by removing the shoutz. :P
u/Xen

my fillstyle and filltext did make use of 'X' but there just wasn't enough shoutz ;)

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yokljo

remix of d/3031 by u/yokljo

function u(t) {

x.globalAlpha=.1
x.save()
x.rotate(S(t*2)*.2)
x.scale(S(t),C(t))
x.fillRect(S(t)*700+900,C(t*5.2)*100+400,200,200)
x.restore()

Aug 8 2017 5:39 PM UTC

}// 126/140

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Just playing around on my phone

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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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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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