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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YusukeJP

function u(t) {

c.width|=0;for(i=2e3;i--;x.fillRect(i%80*24,(i/80|0)*43+S(i/9+t*2)*100,24,43))x.fillStyle=R(i%2?20:0,i%2?90:30,i%2?180:40)

Jul 27 2026 3:35 PM UTC

}// 122/140

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davidsharp

function u(t) {

c.width|=0;k=100;x.font=k+'px courier'
for(i=0;i<22;i++)for(j=0;j<22;j++)x.fillText('?',-k+(k*i)+(t*k)*(j%2||-1)%k,k*j)

Jan 23 2019 1:02 PM UTC

}// 119/140

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f8f82804

remix of d/12670 by u/f8f82804

function u(t) {

for(r=Math.random,i=1e4;i--;x.fillRect(p[0]+=2-4*r(),p[1]+=2-4*r(),1,1))p=u[z=i%2e3]=u[z]||[a=z,b=r()*1080,R(a/8,b/4)],x.fillStyle=p[2]

Mar 7 2019 6:30 PM UTC

}// 135/140

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drawing smaller points doesn't help; this suggests the overhead is in color parsing

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sigveseb

function u(t) {

c.width=99;for(X=0;X<99;X++)for(Y=0;Y<99;x.fillStyle=R(c=S(t+X*Y+t*9)*255,c,c),Y++)x.fillRect(X,Y,1,1)

Apr 27 2016 12:33 AM UTC

}// 102/140

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mxfh

remix of d/22389 by u/mxfh

function u(t) {

d=x.getImageData(o=-1,0,w=c.width=256,h=128)
for(i=b=64;i>-b;i--)for(j=h;j>-h;j--)d.data[o+=4]=((i*j)%~(T(t)*b-i))**8
x.putImageData(d,0,0)

Apr 11 2021 1:31 AM UTC

}// 139/140

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u/EliteDaMyth

for(d=x.getImageData(o=-1,0,w=c.width=256,h=128),i=b=64;i>-b;i--)for(j=h;j>-h;j--)d.data[o+=4]=(i*j%~(T(t)*b-i))**8 x.putImageData(d,0,0) 137
u/EliteDaMyth

for(d=x.getImageData(o=-1,0,w=c.width=256,h=128),i=b=64;i-->-b;)for(j=h;j>-h;j--)d.data[o+=4]=(i*j%~(T(t)*b-i))**8 x.putImageData(d,0,0) 136
u/mxfh

for(d=x.getImageData(o=3,b=i=64,w=c.width=256,h=128);i-->-b;)for(j=h;j-->-h;)d.data[o+=4]=(i*j%~(T(t)*b-i))**8 x.putImageData(d,0,0) 132

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rodrigo.siqueira

remix of d/32379 by u/rodrigo.siqueira

function u(t) {

`꩜ Hypnotic Spiral ꩜`
for(x.reset(i=8e3);i;)x.fillRect(960+S(k=i--/199+t*8)*i/19,(t<10?t*44:440)+400+C(k)*i/25-C(3)**2*(1-i/2e3/t)*440,5,5)

Sep 7 2024 9:00 PM UTC

}// 139/140

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꩜ Hypnotic Spiral ꩜ #spiral

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function u(t) {

s=20;w=48;h=27;c.width|=0
F=i=>(x.globalAlpha=C(i*t),x.fillRect((w+X)*s,(h+Y)*s,s,s))
for(X=-w;++X<w;)for(Y=-h;++Y<h;)u=X/w,v=Y/h,F(u*u+v*v)

Jul 21 2020 11:13 PM UTC

}// 140/140

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sigveseb

function u(t) {

t?x.lineWidth=1/(F=400):a=[];s=t*50.26;P=[F+C(s)*t*F,F+S(s)*t*F];a.push(P);for(V of a)x.moveTo(...V),x.lineTo(...P);t<2&&x.stroke()

Jan 2 2018 1:18 AM UTC

}// 131/140

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cobweb challenge

u/donbright

awesome on chrome, blank on my firefox...
u/iverjo

#cobweb

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TGY

remix of d/25685 by u/TGY

function u(t) {

eval(unescape(escape`瀽㌫琥㌰⼹੩㴷⵴⼳ぼ《景爨洽樽ㅥ㌻樭ⴻ砮晩汬剥捴⠹〰⭬⩃⡰⤬ㄲ〰⭬⩓⡰⤬㌬㌩⥸⹦楬汓瑹汥㵒⡧㴸〫㐵⩓⡰⭩⤪⨲Ⱨ⬨氽㈰〪⡩ⴴ⤫樫㜰⩃⡩⩰⨲⭩⤩⼹Ⱨ⨳⤠`.replace(/u([^D].)/g,'$1%')))

Jun 28 2022 3:37 PM UTC

}// 125/140

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#windows11 fhd

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rodrigo.siqueira

remix of d/32803 by u/mrncstt

function u(t) {

x.fillRect(x.globalAlpha=.15,p=S(frame),2e3,2e3)
b=(1-p)**20
for(i=9;i--;b*=i/(p*2-1))x.clearRect(i*50+b+760+S(t)*90,500-b*2,20+b,b*4+99)

Nov 22 2024 10:20 PM UTC

}// 137/140

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Flash #default