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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tzador

function u(t) {

for(c.width|=1,P=.142,X=960,Y=500,R=300,i=0;i++<44;)z=t+P*i,x.moveTo(X-Y+R*C(z),Y+R*S(z)),x.lineTo(X+Y+R*C(z+90),Y+R*S(z+90));x.stroke();

Jan 24 2025 1:49 PM UTC

}// 137/140

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Rotating Wires

u/tzador

http://www.dwitter.net
u/tzador

javascript://alert('hello')

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BriSeven

remix of d/33625 by u/BriSeven

function u(t) {

eval(unescape(escape`吽晲慭攊䌽吥㔊刽启㕼《䄽䌪㈫㐊楦⠡琩愽《楦⠡䌩愽愾㸱ੌ㵍慴栮牡湤潭⠩⨲㰼㍼愾㹁ⴳ☷੖㴳㈰㠵㸾䰦ㄊ愽愦縨ㄼ㱁⥼嘼㱁੸⹦楬汒散琨ㄹ㈰ⵒ┲㔵⨹Ⱘ㔭䌩⨹⬨刯㈵㕼〩⨵㐬㤪嘬㤩`.replace(/u([^D].)/g,'$1%')))

Apr 23 2025 8:46 AM UTC

}// 133/140

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Kufic-esque Redux

u/BriSeven

Brought it down from 177 to 164 characters by switching the memory from an array to an int, and using bit shifting instead. Got rid of a lot of array operations by making my lookup index into 3 consecutive bits on the int. I saved enough bytes to be able to rearrange the offsets to fill the screen.
u/BriSeven

The dark underline on the previous go was a bug, a nice one. but unfortunately I ended up fixing it.
u/BriSeven

Oh, but you can recreate the bug by changing A=C*2+4 to A=C*2+2`
u/BriSeven

146.. so close! a=t?a:0 T=255 for(C=5;C--;x.fillRect(T*8-t*60%T*8,(5-C)*8+(t*60/T|0)*60,8*V,8))C||(a>>=1),A=C*2+2,V=32085>>(a*t&1<<3|a>>A-3&7)&1,a=a&~(1<<A)|V<<A;
u/warbino

@u/BriSeven 👍

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Xen

remix of d/17569 by u/andrea270872

function u(t) {

c.width=69
d=x.getImageData(0,0,69,39)
D=d.data
for(i=D.length;i--;D[K+1]=255)D[K=i*4+2]=255*S(i*K+t*7)
x.putImageData(d,0,0)

Feb 11 2020 8:31 PM UTC

}// 125/140

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paint by colors with a Vengeance

u/andrea270872

nice pattern

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magna

function u(t) {

c.width+=S(t)*9
for(i=9;i--;)x.fillRect(400+i*100+S(t)*300,400,50,200)

Jun 19 2018 5:33 AM UTC

}// 70/140

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Not clearing canvas in the usual way. #default

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ellisk1

remix of d/3713 by u/bobdunn

function u(t) {

c.width|=0;for(i=0;i<22;i++){d=2*t+i*3;x.fillStyle=R(0,125*(1+C(3.14*i)),255,1);x.fillRect(360+55*i,500+100*S(d)+S(d)*T(t/28+i*3),50,200)}

Dec 28 2017 6:43 AM UTC

}// 138/140

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jick

function u(t) {

for(i=0;i<2e3;i++) { x.fillStyle=R(0,C(t*i)*255,0); x.fillRect(i,1070,10,4); }
x.drawImage(c,0,-5,1920,1080)

Mar 21 2017 3:07 AM UTC

}// 109/140

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u/donbright

interesting technique
u/Xen

your turn ;-) remix: #2920, i hope you like!
u/Xen

your turn ;-) remix: #2920, i hope you like!

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DirtyDan

remix of d/5507 by u/DirtyDan

function u(t) {

c.width=960;p=Math.PI*2;x.beginPath();a=480;for(i=0;i<270;i++){b=p*(i/135)*T(t);x.lineTo(a+a*S(b),0);x.lineTo(a+a*-S(b)*C(t),i*2)}x.stroke()

Jan 4 2018 7:04 PM UTC

}// 140/140

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Reduced the size and amount of lines to run well on mobile

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rileyjshaw

function u(t) {

for(i=0;(i+=3/t)<1;x.beginPath(),x.arc(860,540,1e5*(1-i)*S(t/999),0,i*6))x.fill()

Aug 3 2019 10:37 PM UTC

}// 81/140

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jonathan_b

remix of d/6271 by u/jonathan_b

function u(t) {

for(c.width|=s=i=1008;i-=12;)q=S(S(t+i)*C(t+i)),x.lineTo(s+s*2*q,s/2+s/2*S(q+t+i+i)),x.lineWidth=i/2,x.strokeStyle=R(q*i,q*s/2,i),x.stroke()

Jan 21 2018 2:46 AM UTC

}// 140/140

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works best on Firefox

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ben

function u(t) {

x.fillStyle=R(255*S(t)**4,80,255*C(t)**2)
x.translate(999,500)
x.rotate(t/99)
x.fillRect(Math.floor(t)%9*50,0,50,20)
x.translate(-999,-500)

Dec 28 2017 2:19 PM UTC

}// 139/140

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