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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/19629 by u/taupelink

function u(t) {

r=Math.random;f=(x,n)=>n?S(x+f(x/n,n-1)):0;for(i=1e3;i--;x.fillRect(X*60,Y*60,f(X+Y*Y,(q=T(X)/S(Y))&37),f(C(X)*S(Y),q&26)))X=r()*32,Y=r()*18

Aug 9 2020 7:39 PM UTC

}// 140/140

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d/19643

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ADESONOM

remix of d/4435 by u/ADESONOM

function u(t) {

c.width=1920;for(i=1;i<500;i++){X=10*(i+t*40)%1500;x.fillRect(960+S(i)*X,520+C(i)*X,s=(C(i*10)*15),s);x.fillStyle=R(0,0,X);}

Dec 28 2017 7:12 PM UTC

}// 126/140

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Expansion

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Cloud

function u(t) {

for(c.width|=i=400;i--;){
z=i
x.fillStyle=R(z/2)
x.fillRect(800+C(t*3-i/100)*50-i/2, 500+S(t*3-i/100)*10-i/2, 300+z, 300+z)
}

Feb 26 2020 7:19 PM UTC

}// 125/140

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#tonel

u/ivylab

I tried the same thing a few weeks ago but I couldn't do it. Now just make it more performant so you can fill the entire canvas! :)
u/13thptr

#tunnel

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corruptio

function u(t) {

for(x.setTransform(0,W=99,W,0,W,300);W--;x.fillRect(0,0,1,2))r=C(W**t)*9-6|0,r*=r>=0,x.transform(.8-r*.5,r?.2:-.1,r?.7*r-1:.1,r?.2:.9,0,2-r)

Oct 28 2017 9:33 AM UTC

}// 140/140

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u/Xen

nice :)
u/iverjo

Nice :) I'd like to see more of this kind of stuff

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yokljo

remix of d/8339 by u/yokljo

function u(t) {

x.fillRect(0,0,2e3,2e3)
for(i=1000;i--;x.fillRect(i*3,530+o*120,7,7))x.fillStyle=`hsl(${i},${i/(o=S(t+i*5)+C(t+i/99)*2)}%,${i?o*o*9+2:0}%)`

Jun 5 2018 10:30 AM UTC

}// 139/140

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u/BirdsTweetCodersDweet

Nice shadows :D

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Xen

remix of d/3143 by u/nystrand

function u(t) {

with(x)for(translate(t?C(t):i=m=990,t?0:540),i=m;i--;fillRect(-m,i+z,3e3,2+z/i))fillStyle=R(z=m/((i*i-t*i)%m),rotate(-T+(T=i+S(t))),z*9,.1)

Sep 3 2017 1:34 AM UTC

}// 139/140

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few tweaks to the original...

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gdplayer

function u(t) {

eval(unescape(escape`𨰮𭱩𩁴𪀽𜐲𞀰𛁵𭀽𭐮𭁯𤱴𬡩𫡧𚀩𞱸𛡦𫱮𭀽𘠴𝁰𮀠𠱯𫡳𫱬𨑳𘠻𮀮𩡩𫁬𥁥𮁴𚁵𭀮𬡥𬁬𨑣𩐨𛰻𛱧𛀢𧁮𘠩𛀭𭀪𝐰𜀥𚁵𭀮𫁥𫡧𭁨𚠴𝀩𚱵𭀮𫁥𫡧𭁨𚠱𜐬𚁣𛡨𩑩𩱨𭀯𜠩𚱓𚁴𚐪𜐲𞀭𜐲𞀩`.replace(/u../g,'')))

Oct 22 2023 8:13 AM UTC

}// 116/140

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minimal demo thing

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New_Core

remix of d/438 by u/New_Core

function u(t) {

c.width=(a=1200)+500*S(t);q=99;x.font=3+'cm a';x.translate(960,540);x.rotate(t/3);for(i=320;i--;x.fillText("☕",i%24*q-a,i%26*q-a))x.fill()

May 26 2017 6:12 AM UTC

}// 138/140

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u/13thptr

lol
u/13thptr

#rotozoom

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Pascal

function u(t) {

if(t<52){t=(60-t)**0.6*5;x.fillStyle=`hsl(${(40*t)%360},70%,70%)`;x.beginPath(x.fillRect(810+20*t*S(t),960+10*t*(T(t)%200)-10*t,300,100))}

Dec 10 2020 6:58 PM UTC

}// 138/140

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Colorful X

u/Xen

nice

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rodrigo.siqueira

remix of d/12440 by u/rodrigo.siqueira

function u(t) {

t||(a=b=0)
for(i=5e3;i--;)x.fillStyle=R(C(a)*200,S(a)*b/3,t*42),x.fillRect(960+b*S(a*.8),540-b*C(a*.8),1,1),a+=1.9*C(2.5*a)+C(t/5),b+=.00076

Jul 7 2019 9:15 PM UTC

}// 140/140

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Feigenbaum Flower. Homage to Mitchell Feigenbaum (1944-2019). He demonstrated the universal character of dynamical non-linear systems, which has made possible the systematic study of chaos. In 1975, using the small HP-65 calculator, he discovered that the ratio of successive distances between bifurcation events tends to a constant δ ≈ 4.66920... This "ratio of convergence" of period-doubling bifurcations is now known as the first Feigenbaum constant. #bifurcation #attractor #fractal #chaos #math

u/taupelink

This is a great tribute. RIP.
u/donbright

really nice
u/artfarnaa

Rodrigo - are you working full time on this fractal stuff? Super impressive if its only a hobby. Great work.
u/rodrigo.siqueira

#tribute