Dweets awesomed by u/Exca

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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Exca

function u(t) {

c.width|=e=y=>x.fillRect(k,720-y,50,y<0?3:8)
for(i=32;i--;){w=S(i*C(t+i/7))*(32-i)
w*=w/2
while(w>0){x.fillStyle=R(w-=8)
k=i*60
e(w)
e(-w)}}

Jan 5 2018 2:05 PM UTC

}// 140/140

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Thanks for helping with the last few bytes go to poro

u/sigveseb

the reflections really make this one!
u/joeytwiddle

Very cool. Here is a retro-spect-rum: d/2411

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rikardlindstrom

function u(t) {

i=c.width=192;x.translate(96,54);x.lineWidth=.1;for(;i--;)x.arc(0,C(t+i/9)*10,i,0,7);x.stroke()

Jan 4 2018 6:02 PM UTC

}// 95/140

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u/M1T0

like a perfect ripple simulation
u/donbright

smooth

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Exca

function u(t) {

c.width|=l=Math.hypot
for(i=3e3;i--;){q=i%99,w=i/99,a=S(t)*29+70,s=C(t)*55,b=l(q-a,w-s)+l(q-a/3,w-s/5),n=S(b)*19,x.fillRect(q*20,w*36,n,n)}

Jan 4 2018 7:15 AM UTC

}// 139/140

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Exca

remix of d/5392 by u/Exca

function u(t) {

c.width|=q=(w,o)=>{b=S(w/10+t)*7+960+o,v=180+w*15
x.fillStyle=R(0,0,0,w/52)
x.fillRect(b,v,50,1080-v);}
for(j=54;j--;)q(j,S(t+j*.05)*900)

Jan 3 2018 6:12 PM UTC

}// 139/140

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u/CliffJonesJr

Mesmerizing.

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Exca

function u(t) {

c.width|=t/=25
x.fillStyle=R(0,0,0,.1)
q=(w,o)=>{b=S(w/10+t)*7+960+o,v=180+w*10
x.fillRect(b,v,w,1080-v);}
for(j=54;j--;)q(j,S(t*j)*900)

Jan 3 2018 6:08 PM UTC

}// 138/140

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u/sigveseb

kefrens bars! (alcatraz bars? :D )
u/Exca

Indeed, with a pendulum swing
u/Exca

Had a version with ropes coming from top and each of the bars as squares. Couldn't get that one under 156 characters though.

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Exca

function u(t) {

//Pen!
r=v=>x.fillStyle=R(v,v,v,1)
x.fillRect(r(255)|0,340,1920,49)
x.fillRect(r(0)|960+C(t)*250*S(t/3),340,6,49)
x.drawImage(c,S(t)/4,1.2)

Dec 29 2017 4:59 PM UTC

}// 139/140

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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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poro

function u(t) {

for(i=0;i<999;i++){
c=(i+t)%9;t+=0.9;
x.fillStyle=R(c,c,c*9,.05);x.fillRect(S(t)*4*i+960-S(t)*780+S(t*2)*250,C(t)*2*i+720-C(t*.5)*120,9,9)
}

Dec 28 2017 1:19 PM UTC

}// 140/140

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Exca

function u(t) {

for(i=0;i<5184;i++){w=i%96,q=i/96|0,e=128+S((w-45)/(q-28)+t)*400;x.fillStyle=R(w/96*e,q/96*e,.5+.5*C(t)*e);x.fillRect(w*20, q*20, 20,20)
}

Dec 28 2017 12:32 PM UTC

}// 138/140

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u/Xen

nice style

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Exca

function u(t) {

t/=4;for(i=0;i<1100;i++){d=C(t+i),s=i==0?2920:9-d*8;x.fillStyle=R(i,i,i,0.1);x.fillRect(S(t*2.5+i)*220*S(C(t)+i%50)+960*(i==0?-1:1),i,s,s);}

Dec 27 2017 7:58 PM UTC

}// 140/140

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Show more comments…
u/magna

Wow!
u/Xen

impressive first 2 dweets
u/sigveseb

Very nice
u/mrremix

i really like this one... might do a remix later :]
u/CliffJonesJr

I remixed this into a tornado: https://www.dwitter.net/d/4590
u/lionleaf

#twister
u/Cloud

Milk path
u/vain

cool looking twister / tube

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