Dweets awesomed by u/joeytwiddle

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: #Food

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lurifax

function u(t) {

for(x[f='fillRect'](i=0,0,2e3,2e3);i++<(w=255);x.fillStyle=R(a=w*2-i*2,a/2,50,1.2-i%w/w))x[f](960-S(2*t+S(t+i))*i*3,540-C(t+i)*i*2,i/5,i/5)

Oct 7 2017 1:02 PM UTC

}// 139/140

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u/magna

WOW! Depth of field with just colours!
u/lionleaf

Stunning!
u/sigveseb

Radical!
u/sadropol

Lovely!
u/Galaxtone

It has that dancing ballerina effect
u/Galaxtone

is it going left or right?

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Xen

remix of d/3256 by u/gbnikolov

function u(t) {

for(i=c.width|=l=5e2;i--;x.lineWidth=.2)x.moveTo(960+S(i)*l,540+C(i+t)*l),x.lineTo(960+S(i/t+t)*l,540+C(i/t)*l);x.stroke()

Oct 6 2017 8:13 PM UTC

}// 122/140

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u/gbnikolov

that's insane <3
u/Xen

thanks :-)
u/magna

So pretty!
u/donbright

how did i miss this one... super work
u/Xen

thank you

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nystrand

function u(t) {

for(x[n=t?++n%4e3:0]=n,c.width|=i=0;i++<n-2;x.lineTo(a+800,x[i-1]+400))a=x[i]+=(i%3+~t%3+~S(t*n))*x[i+~~t%3]/(399-n/18);x.stroke()

Oct 5 2017 1:42 PM UTC

}// 130/140

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u/magna

Wow!
u/artfarnaa

Double wow
u/Xen

nice work! :)
u/joeytwiddle

#shape #model #3d

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cantelope

remix of d/3246 by u/cantelope

function u(t) {

for(x.fillRect(0,0,i=(w=960)*3,i);i--;x.clearRect(w+(S(q=i/381+S(t)*2)*Z)/(Z=C(q)*Z-7)*w,540+S(p)*v/Z*w,6,6))Z=C(p=i/63.67)*(v=i%8/8+1)+3

Oct 5 2017 5:53 AM UTC

}// 137/140

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new dweet exporter site https://dweet.net/194/3252

u/innovati

Very nice!
u/cantelope

should probably have done 63.67+t
u/sigveseb

Nice!
u/joeytwiddle

#perspective #dots

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joeytwiddle

function u(t) {

x.fillStyle='black',x.fillRect(0,0,1920,1080)
X=960-1200*C(t),Y=1200-800*S(t)
x.fillStyle='white',x.beginPath(),x.arc(X,Y,199,0,7),x.fill()

Oct 4 2017 9:18 AM UTC

}// 139/140

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Happy https://en.wikipedia.org/wiki/Mid-Autumn_Fes… !

u/joeytwiddle

Suggestion: Send some Chinese lanterns up into the sky
u/joeytwiddle

Suggestion: Prepare your rangoli for next week: https://www.google.com/search?tbm=isch&q…
u/joeytwiddle

Someone did this: https://www.dwitter.net/d/3293
u/joeytwiddle

A similar concept, but much prettier: d/6940

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cantelope

function u(t) {

for(i=(w=(c.width|=0)/2)*2.5+1;i--;x.lineTo(w+(S(q=i/382)*Z)/(Z=C(q)*Z-1.9)*w,540+S(p)*v/Z*w))Z=C(p=i/153+C(t/2)*6)*(v=i%2-.5)+.8;x.stroke()

Oct 4 2017 7:21 AM UTC

}// 140/140

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best fullscreen... color version: https://codegolf.tk/a/192

u/joeytwiddle

Very striking! Have you considered designing furniture for the overly comfortable?
u/cantelope

now i have :)
u/donbright

hot damn

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Xen

function u(t) {

t?x[(c[p+=[-1,-v,1,v][d=c[p]-~d&3]]^=2)?"fillRect":"clearRect"](p/v|0,p%v,1,1):(p=d=6e3,c.width=130,v=99)

Oct 3 2017 9:22 PM UTC

}// 105/140

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not sure if someone from the team posted this already...

u/joeytwiddle

Not in 105 chars! Kalanchoe did Langton's Ant in 140: https://www.dwitter.net/d/1132
u/Xen

can do it in 103 by shaving |0 but just doesnt look right....
u/iverjo

Impressive!
u/alien

NOOO!!! you did and L system in 105 chars.. this brings shame to my java version T___T this is so awesome.
u/Xen

thanks :D

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lurifax

remix of d/3221 by u/lurifax

function u(t) {

c.width|=0;for(j=361;--j;x.fillRect(960+500*S(d=j/56)*C(e=t+j%4*.785),540+500*C(d)*S(e),9,9))x.fillStyle=`hsl(${j},99%,50%`

Oct 3 2017 8:16 PM UTC

}// 123/140

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Fixed the annoying black dot in the original and golfed 17b :)

u/Xen

you can get it to 115b ;-)
u/lurifax

Oh, interesting! Hmm, can you give a hint Xen? :)
u/lurifax

Got in down to 116b, thanks for the encouragement Xen: for(c.width|=j=360;--j;x.fillRect(960+500*S(d=j/54)*C(e=t+j%3),540+500*C(d)*S(e),9,9))x.fillStyle=hsl(${j},99%,50%
u/lurifax

Still can't find the last byte though :)
u/joeytwiddle

Could j start off with a higher value? ;)

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joeytwiddle

function u(t) {

r=()=>Math.random()*2520;for(i=99;i--;)x.fillStyle=`hsla(${r()},99%,50%,.01`,x.beginPath(),x.arc(r()-99,r()/2-99,r()**3/4e7,0,7),x.fill()

Oct 3 2017 4:47 AM UTC

}// 137/140

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Show more comments…
u/cantelope

mmm love it
u/sigveseb

This needs more awesome votes!
u/Xen

got mine <3
u/iverjo

This one looks better in Chrome than in Firefox
u/joeytwiddle

Firefox users: please replace 50% with 33% or 66%
u/joeytwiddle

I guess this is exploiting rounding behaviour. RGB clouds emerge first, CMY later.
u/joeytwiddle

It has stopped working in Chrome. Now Chrome needs the same fix as Firefox!

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Xen

remix of d/3228 by u/cantelope

function u(t) {

t?v=S(t*4):c.width=1e3
for(i=1e4;i--;x.fillRect(500+S(p=q*(t*v)+v)*q,290+C(p)*q,9,9))x.fillStyle=`hsla(${(t*2*(q=i/9))*C(t)},99%,40%,.2)`

Oct 3 2017 12:20 AM UTC

}// 137/140

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last one was broken for chrome users sorry... firefox auto-fix's a set alpha on hsl().

u/magna

Nice!
u/Xen

thanks :)

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