Dweets awesomed by u/pavel

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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KilledByAPixel

function u(t) {

for(T[2931]=i=6001;i--;T[i]&!(T[d+=i]|T[d+e]|T[d-e])&&x.fillRect(i%99*20,i/5,21,T[d]=21))d=(Math.random(e=1)*4|0)*2-1,d>1?d=(d-4)*99:e=99

Dec 20 2020 6:09 AM UTC

}// 137/140

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Maze Growth

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u/Xen

nice!
u/rodrigo.siqueira

I was not able to remix because it's a self-destructive code that can run only once.
u/pavel

Use u instead of T to store the data. u does not persist between edits.
u/KilledByAPixel

ah thanks pavel, good call
u/akx

This reminds me of an algorithm I discovered in 2012: https://akx.github.io/spacefill/spacefill.ht…
u/rodrigo.siqueira

It reminds me of the brain's synapse formation process (synaptogenesis) and neural embryogenesis. May be a similar algorithm (but in 3D or in higher dimensions) could be used in the simulation of stochastic neural networks.

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ntsutae

function u(t) {

f=(X,Y,n=5)=>n?f(S(X*X*3-Y*Y*2),3*S(1+X*Y)+1,n-1):Y*Y*9
for(X=2e3;X--;x.fillRect(X,t*60,1,1))x.fillStyle=R(g=f(X/2e3-.5,t/38),g*2,g*g)

Dec 17 2020 10:49 AM UTC

}// 134/140

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u/pavel

Whoa, nice!
u/Xen

love it
u/taupelink

very cool

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pavel

remix of d/21012 by u/pavel

function u(t) {

with(x)for(c.width|=i=710;i--;beginPath(fill(ellipse(40+18*C(a=++t%3.1416),0,w=S(a),!rotate(i*49+w/3),a,0,7))))setTransform(9,0,0,9,960,540)

Dec 17 2020 3:03 AM UTC

}// 140/140

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Torus Study #2

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New_Core

function u(t) {

with(x)for(c.width|=i=9;i--;fill())beginPath(fillStyle=R(255-i*255,255-i*9)),arc(X=960+(80-i*9)*S(t+i/9),Y=i*40+99,50+i*50,1,2),lineTo(X,Y)

Dec 16 2020 7:01 PM UTC

}// 139/140

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this year the Christmas tree has a "star" but no decoration

u/pavel

-4 with(x)for(c.width|=i=9;i--;fill(arc(X,Y,50+i*50,1,2)))beginPath(fillStyle=R(255*!i,255-i*9)),moveTo(X=960+(80-i*9)*S(t+i/9),Y=i*40+99)
u/pavel

-1 255*!i -> !i<<7

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pavel

function u(t) {

with(x)for(fillRect(i=-710,i,i*=-2,i);i--;clearRect(20+9*S(a=i+t),2,w=C(a),w>0))setTransform(16,0,0,16,960,540),rotate(i/226)

Dec 15 2020 11:04 PM UTC

}// 125/140

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Torus Study #1

u/magna

WOW!
u/vovanmozg

fantastic!

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intrinsic

remix of d/20935 by u/rodrigo.siqueira

function u(t) {

for(ⵠ=1e4,ഽ=(β,α,γ,ට)=>γ>1?ഽ(α+γ*S(ට),β+γ*C(ට),γ/3,T(ට/11)*23):x.fillRect(β+960,α+540,γ,γ);ⵠ--;)ഽ(0,0,360,ⵠ+t)

Dec 15 2020 8:24 PM UTC

}// 110/140

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7 bytes less #golf

u/pavel

Shaving off 8 more for(f=(X,Y,r,a)=>r>1?f(Y+r*S(a),X+r*C(a),r/3,T(a/11)*23):x.fillRect(X,Y,r,r);t<1e4;)f(960,540,360,++t)
u/intrinsic

Awesome!
u/Xen

for(f=(X,Y,r,a)=>r>1?f(Y+r*S(a),X+r*C(a),r/3,T(a/9)*23):x.fillRect(X,Y,r,r);t<1e4;)f(960,540,360,++t)

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rodrigo.siqueira

remix of d/20959 by u/jellyedwards

function u(t) {

c.style.filter=`invert(`
for(e=k=c.width|=w=50;k--;x.fillRect(w|x.rotate(k%w+t/4),9,1,1))
x.setTransform(v=2+k%7,0,0,v,k,(k*k+t*v)*w%e-w*8)

Dec 15 2020 6:23 PM UTC

}// 139/140

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Night snow #snowflake

u/Xen

smooth!
u/pavel

Nice. Here's 126, maybe room for snowflake code with(x)for(fillRect(0,0,i=2e3,i);i--;)clearRect(50,9,!setTransform(s=2+i%7,0,0,s,i,i&&(i*i+t*s)*50%2e3-400),i&&!rotate(i+t/4))

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ntsutae

function u(t) {

for(t*=30,c.width=X=128;X--;)for(Y=72;Y--;)(t+X^t-Y)%41<Y/4&&x.fillRect(X,Y,1,1)

Dec 13 2020 9:38 PM UTC

}// 80/140

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u/magna

Fantastic!

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TGY

function u(t) {

throw u.toString()
//Fair enough for quine?

Dec 12 2020 2:55 PM UTC

}// 43/140

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Quine (not golfed)

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rodrigo.siqueira

remix of d/20935 by u/rodrigo.siqueira

function u(t) {

for(ⵠ=1e4;ⵠ--;ထ(0,ꖴ=2,280,ⵠ+t,`💡&&⭕⭕➜🍩🍩`))
ထ=(ഠ,𑄗,Ꙭ,ට)=>Ꙭ>99?ထ(𑄗+Ꙭ*C(ට),ഠ+Ꙭ*S(ට),Ꙭ/ꖴ,T(ට*ට+t*ට)/ꖴ):
x.fillRect(ഠ+480+950*(ⵠ%ꖴ),𑄗+510,.4,t<ꖴ)

Dec 9 2020 4:50 PM UTC

}// 140/140

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Illuminated Double Donuts #torus #donut

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u/ciaccodavide

Nice! Double donuts everywhere!
u/pavel

Not a fan of the obfuscated code. Looks nice to people who don't care to understand it but hurts your fellow coders that want to play around with it, which is a big part of Dwitter for me.
u/geb

for(i=1e4;i--;f(0,c=2,280,i+t,💡&&⭕⭕➜🍩🍩)) f=(w,h,q,d)=>q>99?f(h+q*C(d),w+q*S(d),q/c,T(d*d+t*d)/c): x.fillRect(w+480+950*(i%c),h+510,.4,t<c)
u/rodrigo.siqueira

I posted a cleaner version (remix). I usually avoid obfuscated code, but in this case it was for aesthetic reasons and for fun ("donuts everywhere" style). The 💡&&⭕⭕➜🍩🍩 part was just to illustrate, it has no functionality in the code.
u/tomxor

I think Pavel might be refering to unicode tofu, I get this too... the "⭕⭕➜🍩🍩" bit renders but almost all the other non-ASCII chars are tofu. I think it depends on what browser/OS combo you have.
u/tomxor

... and which fonts you've bothered installing.

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