Dweets awesomed by u/xem

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=w=3e3,a=b=g=333*T(t%9/7);j=(i^a*a)%4,i--;x.fillRect(a+=g+C(j*5+t)*g-a/2-w+g,b+=g+S(j*9+t)*g-b/2-w,s,s),w=2)x.fillStyle=R(s=w*9,w,s,.1)

Dec 28 2017 2:50 PM UTC

}// 140/140

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Show more comments…
u/sigveseb

This one is fantastic! Good job indeed
u/Bendoman

Brilliant!
u/Xen

very very impressive!
u/magna

HOW ON EARTH
u/nic

MIND:=BLOWN
u/lowpoly

Gawd, I learnt a lot today
u/Citiral

Since when does Javascript support black magic?
u/sigveseb

Needs more upvotes!
u/doof

this was such a delight to unpack :)
u/Lazy1337

wow
u/aleamb

amazing
u/iverjo

I'm awestruck
u/xem

unbelievable
u/trapkid

lol
u/aleamb

epic! one of the greatest dwitter
u/ThreeNPlusOne

sierpinski triangle :D
u/xem

It'd be nice to have a blog post explaining it :) (please?)
u/trupples

I didn't look much into it but it might have to do with a thing I read about once where if you have a point that "walks" half the distance towards a random corner of a triangle you'll end up drawing a sierpinski triangle sorta like you can see in https://www.dwitter.net/d/5097
u/trupples

And according to http://distrustsimplicity.net/articles/sierp… if you were to use 4 points instead of 3 you'd get a tetrahedron like in this dweet. Fascinating stuff
u/stiaje

#witchcraft
u/lionleaf

#top_of_the_year
u/Scaledish

wow
u/Tekmap

👏👏👏👏👏
u/vain

that's not from this world! incredible code / 3d fx and blur
u/rodrigo.siqueira

3D flying #sierpinski pyramid #fractal

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lowpoly

remix of d/4348 by u/lowpoly

function u(t) {

i=2e3,c.width=i,x.fillRect(0,0,i,i),x.fillStyle='#fff';for(p=i;p--;)d=p/500,x.fillRect((p+d*50*(t+i))%i,(''+p*T(p)/i).substr(-3)/999*i,d,d)

Dec 28 2017 11:00 AM UTC

}// 139/140

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Scrolling stars that look more like stars :) Now to add sine functions or something.

u/Xen

x.fillRect(0,0,c.width=p=i=2e3,i)
u/lowpoly

yeah, i usually do something like i=c.width=2e3 now :P

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xem

function u(t) {

for(Q=O=1920;Q--;x.fillStyle='#'+I*12,x.fillRect(Q,t*60,1,!!I))for(V=W=0,I=99;--I/V;W=Z+Z+_/8e5-1.25)Z=V*W,V=V*V-W*W+(_=Q+t*60*O)/640%3-2.15

Dec 28 2017 9:55 AM UTC

}// 140/140

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Colored, progressive, Mandelbrot tracer. Dwitted with the great help of @veubeke. Even cooler in fullscreen! More info and credits on https://github.com/xem/miniMandelbrot/

u/Xen

Loving the detail :-)
u/E-Mouse

Xem and Xen, confused af

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0utdacious

function u(t) {

F=(r,i,j)=>i*i+j*j+r<9?F(r+1,i*i-j*j-S(t),i*j-C(t)):r
c.width=600
for(i=8;i>0;i-=.1)for(j=7;j>0;j-=.1)x.fillRect(99*j,55*i,d=F(0,i-3,j-3),d)

Dec 28 2017 7:55 AM UTC

}// 140/140

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Fractals! Transformed Julia sets from c \in (0,1)

u/Xen

love it
u/poofasa

Sick!

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xem

function u(t) {

if(!t)d=0;for(c.width=150,e=[i=6e3];i--;x.fillRect(i%k|0,i/k|0,1,e[i]=(n-1|d[i])==3|i%9&!d))for(j of[n=1,73,k=74,75])n+=d[i+j]+d[i-j];d=e

Dec 27 2017 10:17 PM UTC

}// 137/140

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Game of life inspired by https://github.com/xem/miniGameOfLife2/ (cc. @subzey @nderscore @veubeke @xen_the @justecorruptio), also shout out to @aemkei for #672

u/iverjo

#gameoflife

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most

function u(t) {

c.width=w=1920;
h=1080
for(i=1000;i--;)x.lineTo(w/2+C(t+i) * 600*T(t/10), h/2+C(t-i*3)*500*T(t/20))
x.stroke()

Dec 27 2017 9:37 PM UTC

}// 110/140

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Bendoman

function u(t) {

c.width=1920;for(i=0;i<20;i++){x.arc(900+C(t)*-30*i,200+(i*20),20,0,Math.PI*2);x.arc(900+S(t)*30*i,900-(i*20),20,0,Math.PI*2);x.stroke()}

Dec 27 2017 9:00 PM UTC

}// 137/140

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Xen

function u(t) {

x.fill(x.arc(c.width=t,t,t,0,7))

Dec 27 2017 7:42 PM UTC

}// 32/140

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[32bytes of precision]

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xem

function u(t) {

x.fill(x.arc(t,t,t,t,t))

Dec 27 2017 7:08 PM UTC

}// 24/140

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quest for the smallest aimated dweet, top 3: 24b

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xem

function u(t) {

x.fillText(t,t,t)

Dec 27 2017 7:03 PM UTC

}// 17/140

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quest for the smallest aimated dweet, top 1: 17b

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