Dweets awesomed by u/Flopster

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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Flopster

remix of d/4548 by u/ADESONOM

function u(t) {

x.globalCompositeOperation="difference";for(i=20;i--;x.fillStyle=R((t*7)%255,(t*11)%255,(t*13)%255))x.fillRect(i*100+S(t+i)*300,0,50,1e3)

Dec 28 2017 11:01 PM UTC

}// 137/140

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ADESONOM

remix of d/4539 by u/ADESONOM

function u(t) {

x.globalCompositeOperation=(f=t%10)<8?"screen":"multiply";for(i=20;i--;x.fillStyle=R(0,c=(f*1.1),c))x.fillRect(i*100+S(f+i)*300,0,50,1e3)

Dec 28 2017 10:48 PM UTC

}// 137/140

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Remixed (again) for speed.

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ben

function u(t) {

function v(a,b,g,r){if(r>1){x.fillRect(a+=r*S(g),b-=r*C(g),2,2)
v(a,b,g-1+C(t),r*=.7)
v(a,b,g+.5+S(t),r)}}c.width=500
v(250,270,0,80)

Dec 28 2017 9:28 PM UTC

}// 133/140

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Show more comments…
u/Xen

LOVE IT!
u/ben

trying to make a swaying tree but requires too many characters to draw the branches
u/Xen

join the chat and show your code... :-)
u/sigveseb

Very good!
u/itsjustmustafa

recursive functions in under 140, love it!
u/Bendoman

Best thing on here by far.
u/FrankMoren27

awesome
u/iverjo

#recursive
u/lionleaf

#fractals
u/vain

incredible

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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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Flopster

function u(t) {

c.width|=0
s=1000
for(i=0;i<s;d=2*Math.PI/s*i,r=Math.max(0,S(t*(1+t*i*Math.PI/s)/5))*500,x.fillRect(r*C(d)+960,r*S(d)+540,10,10),i++);

Dec 28 2017 9:41 AM UTC

}// 134/140

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retera

function u(t) {

c.width=w=1920
v=t+400
for(q=255;q--;){x.fillStyle=R(q,q,q);x.beginPath();x.arc(w/2+C(v-q)*(v+q),540+S(v-q)*(v-q),40,0,6.283,!1);x.fill()}

Dec 28 2017 8:54 AM UTC

}// 138/140

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u/Xen

nice style
u/geb

#background
u/vain

well done!

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Flopster

function u(t) {

h=c.height/10
r=n=>(''+S(n))[5]
j=n=>r(n)*25.5
for(i=-90+t|0;i<9*t;i++){x.fillStyle=R(j(i),j(i),j(i+5))
x.fillRect(0,r(i+5)*h,(9*t-i)**4,h)}

Dec 28 2017 2:33 AM UTC

}// 140/140

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u/sukkamehu

h=c.height/10 r=n=>(''+S(n))[5] j=n=>r(n)*25.5 for(i=-90+t|0;i<9*t;i++)x.fillStyle=R(j(i),j(i),j(i+5)), x.fillRect(0,r(i+5)*h,(9*t-i)**4,h)
u/sukkamehu

change it to that so it's under 140

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space_hopper

function u(t) {

if(!t)r=Array(1920).fill(0),r[940]=1
o=r.slice()
for(i=1918;i;){if(o[i]>0)x.fillRect(i,t*60,1,1)
r[i]='01101001'["0b"+o[i+1]+o[i]+o[--i]-0]}

Dec 28 2017 1:34 AM UTC

}// 140/140

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u/rep_movsd

#fractal

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@.+

function u(t) {

c.width^=0;
for(i=0;i<2000;i+=10){
for(j=0;j<1200;j+=10){
g=(a,c)=>S(Math.hypot(a-j,a-i)/100-5*t)*5;
m=g(200)+g(600);
x.fillRect(i,j,m,m);}}

Dec 28 2017 12:35 AM UTC

}// 140/140

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u/Xen

pretty sexy...
u/joeytwiddle

Looks good
u/joeytwiddle

#plasma #dither
u/magna

Cool!

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Yax

function u(t) {

c.width|=0
a=300
for(i=a;i--;)
b=t/2+i,x.fillStyle=R(a,b),x.fillRect(i*10,700+a*Math.abs(S(b)),25,a),x.fillRect(a*5+i*C(b),a+i*S(b),25,25)

Dec 28 2017 12:16 AM UTC

}// 138/140

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u/sigveseb

Very stylish!
u/magna

Wow!
u/iverjo

#sun
u/joeytwiddle

#landscape #ocean #sunset

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