Random dweets | Dwitter

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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taupelink

remix of d/27355 by u/taupelink

function u(t) {

for(i=840,k=180;i-->t*3e3;x.fill())x.beginPath(x.fillStyle=R(i%7*45,50*i**t,i%12*25,3/i%t)),x.arc(X=i%12*k,Y=i%7*k,130/t**t,j=i*.3988,j-3.6)

Apr 8 2023 8:53 PM UTC

}// 140/140

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d/27357

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Agnes

function u(t) {

c.width+=i=0;s=~~t;for(;i<3;x.lineWidth=9+9*i++,w=500/i,s/=i<3?60:12,k=-6.283185*s,x.stroke(new Path2D(`M960 540l${-S(k)*w}
 ${-C(k)*w}`)));

Jan 31 2018 9:01 PM UTC

}// 140/140

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Replace "t" by "(new Date()).getTime()/1000" for real time. No idea how to reduce the rest by that much though.

u/Agnes

Also, the approximation of -2*pi is bad and probably de-syncs the clock after a couple of days.
u/fourier.space

Just like a real clock would!
u/iverjo

#clock

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46uuuu

function u(t) {

if(Math.random()<t/10)return
c.width=1920
for(i=0;i<9;i++)
x.fillRect(400+i*100+S(t)*300,400,50,200)

Jul 10 2026 10:56 PM UTC

}// 100/140

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sandromiccoli

function u(t) {

x.fillStyle=R(255,0,0,0.01);
x.fillRect(c.width*(S(t)+1)/2, 0,t*t/5,t*t*((T(t))))

Dec 29 2017 7:05 PM UTC

}// 81/140

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lewdev

function u(t) {

n=t*10|0
for(i=0;i<100;i++){
x.beginPath();x.moveTo(i*50,n);n=n%2?(n*3)+1:n/2;x.lineTo((i+1)*50,n);x.stroke();}

Aug 9 2021 12:06 PM UTC

}// 111/140

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3x+1 Unsolved Math Problem https://youtu.be/094y1Z2wpJg

u/rodrigo.siqueira

Paul Erdős said about the Collatz conjecture: "Mathematics may not be ready for such problems." He also offered US$500 for its solution. https://en.wikipedia.org/wiki/Collatz_conjec…
u/New_Core

I tried to visualize something with the Collatz Conjecture a few weeks ago but I didnt come up with anything good.. I bet someone can do some nice stuff with it here.
u/lewdev

Yeah, I figured there's a way to build out visuals like the ones in the video. I just did a quick one to get started. Math is a great inspiration for dweets.
u/smtsjhr

neat! some more inspiration for visualizing Collats here: https://youtu.be/RzQE2Q7lsT4

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andrea270872

remix of d/12953 by u/andrea270872

function u(t) {

c.width+=C(t)*2
for(j=1;j++<9;x.fillStyle='#02'+j)for(i=18;i--;){F=(S(i/2)*C(i/4+j+t))**.1;x.fillRect((i+j/8)*98,50*j-F*10,99,80*j+F*20)}

Apr 1 2019 6:57 PM UTC

}// 137/140

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Running in the maze (with more balanced "zoom")

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rodrigo.siqueira

remix of d/23841 by u/rodrigo.siqueira

function u(t) {

for(c.width|=i=50;i--;)for(j=25;j--;x.fillRect(50*i,50*j,45,45))
o=(j/2)*9,x.fillStyle=R(p=o*C(i/7-3+S(j/2+t*9)/8)*20-S(t*2+j/9)*1e3,p/7)

Sep 14 2021 3:07 PM UTC

}// 137/140

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Animated Flames #pixel

u/UEZ

Looks very nice but it looks much better without the grid. ^^
u/Joachim

#fire

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116

function u(t) {

o=S(t+3.15);s=96;c.width^=0;for(j=99;j--;)for(i=99;i--;)x.fillRect(j*s*2+i%2*s/2+(i%2)*S(t)/2*s+(i%2)*s/2,i*s,s-9*o*o,s-9*o*o)

Oct 14 2018 3:59 PM UTC

}// 126/140

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Parallels?

u/erin

#checkers #checkerboard #checker

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joeytwiddle

function u(t) {

for(c.width|=j=20;j--;x.fillRect(960+S(k=9*t+j/2.3)*12-w,540+C(k)*12-h,2*w,2*h))x.fillStyle=R(s=13*j,s,r=s*1.5),w=r*(.5+j%2),h=r*(1.5-j%2)

Oct 16 2018 9:51 AM UTC

}// 138/140

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Blue cross tunnel - a tribute to https://pycodelic.blogspot.com/2018/08/tunne…

u/joeytwiddle

Oops the ripples should come outwards k=9*t-j/2.3
u/sigveseb

pretty colors
u/joeytwiddle

That website is actually made by a Dwitter user, but I'm sorry I forgot who!

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hello@perk.ee

remix of d/34056 by u/hello@perk.ee

function u(t) {

with(x)beginPath(),lineTo(S(t)*1920+960,C(t)*1080+540),lineTo(S(++t)*480+960,C(t)*270+540),lineTo(960,540),fillStyle=`hsl(${t} 50%50`,fill()

Jun 27 2025 5:31 PM UTC

}// 140/140

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