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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Tekmap

remix of d/16539 by u/rodrigo.siqueira

function u(t) {

x.fillRect(0,0,2e3,2e3);for(i=25;i--;)for(j=25;j--;)
x.clearRect(i*60+(S(j+t)*2+(-16+t%9*4))*99,j*60+(S(i*t^1.5)*2)*60,5,j)
x.globalAlpha=.2

Jun 17 2021 12:43 PM UTC

}// 140/140

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magna

function u(t) {

x.fillRect(0,0,s=2e3,s)

Oct 21 2017 5:23 PM UTC

}// 23/140

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Black scene

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Xen

function u(t) {

for(m=t?0:8e4;m;)x.fillRect(0,0,!x.rotate(--m&-m&m/2?11:-11),!x.translate(1,0))

Dec 24 2019 3:54 AM UTC

}// 79/140

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79byte #dragoncurve with freeze and clean otherwise(75byte)

u/Xen

Ultra slow 60bytes? x.fillRect(0,0,!x.rotate(t&-t&t/2?11:-11),!x.translate(1,0))

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ratdog507

function u(t) {

l=0.4*S(t+30)
l=l<0?l*-1:l
x.strokeStyle=R(0,0,0,l)
for(i=0;i<9;i++)x.strokeRect(S(t/2)*800+920,520+420*S(t),100,100)

Dec 23 2021 1:24 PM UTC

}// 117/140

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wgetch

remix of d/21613 by u/wgetch

function u(t) {

for(r=j=i=2e3;i-=z=40;x.fillStyle=R(r=(1+S(i/j*z*C(t^r)*C(t*z)))*(b=128),b-r*C(t/z^t),C(r*S(t))*b))x.fillRect(i%z+t*z*z%j,i-z,z,z)

Feb 7 2021 6:35 AM UTC

}// 130/140

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ｍｕｔａｇｅｎ

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thorbear

remix of d/8394 by u/loni_art

function u(t) {

t?(d=X+.2*(Y-X),e=Y+.01*(X*(28-Z)-Y),Z+=.01*(X*Y-8/3*Z),X=d,Y=e,x.lineTo(Z*20+o,X*20+o),x.stroke()):(X=.2,Y=Z=2,d=e=o=550)

Jan 31 2019 10:05 PM UTC

}// 122/140

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lineTo Lorentz

u/thorbear

#attractor
u/thorbear

I like the t? trick to do the update and init if t==0

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joeytwiddle

remix of d/3598 by u/joeytwiddle

function u(t) {

r=Math.random;if(t%2<.7){c.width=199
for(X=55;X<137;X++)~X&64||r()<.5?x.fillRect(X,9,1,78):0
x.fillText(Object.keys(this)[r()*215|0],55,99)}

Jan 22 2022 2:11 PM UTC

}// 140/140

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Little #barcode remix

u/joeytwiddle

2024/11/18: Object.keys(window).length === 256 on Firefox (249 in Chrome)

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SpilledMilk

function u(t) {

for(i=10;i>0;i--){x.fillStyle=R(100,0,t*20*i%255,1);x.fillRect(960,550,C(t*i)*110*i,S(t*i)*110*i)}

Jan 31 2019 3:25 PM UTC

}// 98/140

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flashing image warning

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nml

function u(t) {

c.width=1920 
for(i=0;i<9;i++)
x.beginPath();
x.arc(95, 50, 40, 0, 2 * Math.PI);
x.stroke();

Jun 12 2020 5:18 PM UTC

}// 92/140

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deobfuscate

function u(t) {

c.width=50
x.beginPath()
x.arc(28,17-Math.abs(S(t)*10),2,0,8)
x.fill()
for(i=9;i--;)x.fillRect(o=((t*6.28+i*10)%50)-10,o,10,10)

Sep 4 2023 4:20 PM UTC

}// 127/140

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BOUNCE