Dweets awesomed by u/eskimofo

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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eskimofo

remix of d/4576 by u/eskimofo

function u(t) {

c.width|=0;r=400
for(i=0;i++<1e3;){y=i*2*Math.PI/(Math.floor(t/2)+3)
x.lineTo(960+y*S(y)*C(y*t+2*t),560+r*S(y))}x.stroke()

Dec 29 2017 2:16 AM UTC

}// 123/140

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eskimofo

remix of d/4574 by u/eskimofo

function u(t) {

c.width|=0;r=400
for(i=0;i++<1e3;){y=i*2*Math.PI/(Math.floor(t/2)+2%10)
x.lineTo(960+r*C(y-t),560+r*S(y+t))}x.stroke()

Dec 29 2017 2:05 AM UTC

}// 119/140

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eskimofo

remix of d/4573 by u/eskimofo

function u(t) {

c.width|=0;r=400
for(i=0;i++<1e3;){y=i*2*Math.PI/t
x.lineTo(960+r/C(y-t),560+r/S(y+t))}x.stroke()

Dec 29 2017 1:57 AM UTC

}// 98/140

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eskimofo

remix of d/4325 by u/eskimofo

function u(t) {

c.width|=0;r=400
for(i=0;i++<2e3;){y=i*2*Math.PI/t
x.lineTo(960+r/C(y-t),560+r*S(y+t))}x.stroke()

Dec 29 2017 1:55 AM UTC

}// 98/140

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rikardlindstrom

function u(t) {

!t&&x.translate(960,540)
j=t%1*255
x.strokeStyle=R(j,j,j)
x.strokeRect(0,0,9,9)
x.drawImage(c,-960,-540)
x.rotate(.01)
s=1.001
x.scale(s,s)

Dec 29 2017 12:38 AM UTC

}// 139/140

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ebiester

remix of d/4452 by u/Xen

function u(t) {

c.width|=s=S(t)
x.translate(o=960,480)
for(i=o/2;i--;x.rotate(C(t/2)/i*t))x.fillStyle=R(i*C(t)+99,99,220-i),x.fillRect(i*6*s,i*6*s,i/6,i*5)

Dec 28 2017 10:53 PM UTC

}// 139/140

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Shouts back to Xen - this is really a minor tweak on his idea.

u/Xen

looking good

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eskimofo

function u(t) {

c.width|=0;g=()=>Math.random()
for(i=0;i<15000;i++)
x.fillRect(g()*1920,g()*1080,10,10)

Dec 28 2017 10:27 PM UTC

}// 87/140

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u/iverjo

No signal (Error Code: DEADBEEF). This could be due to a bad connection or bad weather conditions at your end or 1. Check the cable connections and remove any obstruction around the dish. 2. Try to change channels. 3. Have you tried turning it off and on again?

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eskimofo

function u(t) {

if(t<5.5)for(i=-100;i<=100;i++){x.beginPath()
m=300*i+T(t/4)*200
x.moveTo(m,0)
x.quadraticCurveTo(300*i+S(t)*400,560,m,1080)
x.stroke()}

Dec 28 2017 10:14 PM UTC

}// 136/140

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eskimofo

function u(t) {

c.width|=0;r=400;m=2*Math.PI
for(i=0;i<10;i++){x.beginPath()
x.arc(960+r*S(2*t),580,r*((1+S(t+i*m/10))/2),0,m)
x.stroke()}

Dec 28 2017 6:17 PM UTC

}// 122/140

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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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