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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f8f82804

function u(t) {

with(x)for(globalCompositeOperation='color',s=192,i=9;shadowBlur=i*i--;fillRect(864+s*S(t),444+s*C(t*3),s,s))shadowColor=`hsl(${t*s} 85%45%`

Oct 8 2018 7:54 PM UTC

}// 140/140

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#composite #glow #color

u/donbright

fascinating effect

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Axioplase

function u(t) {

c.width=1920
for(i=0;i<90;i++)
x.fillRect(i*100%2000,(400*i)%1400,50,100*(1+S(i+t*35)))

Jun 24 2025 11:43 PM UTC

}// 88/140

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Negative space, left-moving triangles

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argarak

function u(t) {

c.width=1920
for(a=0;a<40;a++){for(i=0;i<40*a/3;i++) x.fillRect(880+t/a+(400)*S(180-(i*4/t/20)),400*a+(t*a*200)*S(270-(i/t/200)),10,10)}

May 15 2020 3:03 AM UTC

}// 136/140

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quick flame

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phillipcool

remix of d/3693 by u/Citiral

function u(t) {

c.width=1920;s=50;for(i=0;i<1920;i+=s){for(j=0;j<1080;j+=s){f=s*(1-S(2*t+i**(2+C(i))+j))**0.5/25;x.fillRect(i+f,j+f,s-f*2,s-f*2)}}

Dec 27 2017 11:11 AM UTC

}// 130/140

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anotherkitten

function u(t) {

x.fillStyle='#1021'
x.fillRect(0,0,2e3,2e3)
for(i=64;i--;)for(j=36;j--;)if(T(C(j/8+i/6)+i-t)>9)x.clearRect(i*30,j*30,30,30)

Oct 5 2020 7:09 PM UTC

}// 123/140

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asciislinger

function u(t) {

X=1820;Y=980;r=Math.random;x.lineWidth=r();x.lineTo((X+t+r()*200)%1920,(Y+r()*200)%1080);x.stroke();(r()<.0005?x.lineTo(r()*X,r()*Y):0)

Sep 3 2020 1:04 PM UTC

}// 135/140

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Dotting the t's and crossing the i's

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mxfh

remix of d/22456 by u/mxfh

function u(t) {

d=x.getImageData(0,0,w=c.width=128,w)
d.data.forEach((v,i,A)=>A[i]=(i%w>>2^(i>>9)+t*30)%(3+i%4)*w)
x.putImageData(d,0,0)

Apr 12 2021 10:09 PM UTC

}// 120/140

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rodrigo.siqueira

remix of d/32410 by u/zadgy5534

function u(t) {

for(i=w=1e4;i--;x.globalAlpha=.3)x.fillStyle=R(r=w%i*T(i)/9/t/t,r*t*t/79),x.fillRect(960+C(w%i^t)*900/t,540+S(w<<i/t)*440/t,p=17*S(i*t)/t,p)

Sep 16 2024 1:37 PM UTC

}// 140/140

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red liminal space

u/magna

Make it green and it's the Matrix
u/lewdev

u/magna I gotchu fam. x.fillStyle=R(0,r=w%i*T(i)/9/t/t) for matrix

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danny@hille.dk

function u(t) {

for(c.width|=i=0;i<6.3;i+=.01){x.lineWidth=8
r=(.3*S(t+C(t-i)))*(.5*C(S(i*9)))*2e3
a=i+S(r/99+t)
x.lineTo(960+r*C(a),540+r*S(a))
}x.stroke()

Aug 29 2020 9:03 PM UTC

}// 140/140

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u/Xen

sexy!
u/danny@hille.dk

looks like an animated tribal tattoo: for(c.width|=i=0;i<6.3;i+=.01){x.lineWidth=8 r=(.3*S(t+C(t-i)))*(.5*C(S(i*9)))*2e3 a=i+S(r/99+t) x.lineTo(960+r*C(a),540+r*S(a)) }x.fill()

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Feiro

remix of d/8739 by u/firegodjr

function u(t) {

with(x)for(fillRect(0,0,k=2e3,k);k--;beginPath(fillStyle="#0001"))arc(960,540,k/4,v=k%4*1.57+S(t*3-k/280)+t,v+.2),strokeStyle="red",stroke()

Jun 28 2018 11:07 AM UTC

}// 140/140

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red is shorter than any other color! :D

u/firegodjr

Looks like a rose :D
u/Agnes

For the record, strokeStyle="tan" is as short as red.
u/magna

R(k) also seems to work
u/zanella

You can replace 1.57 with 1.6, and use this extra byte to use hex colors instead of red, like #0f0. ;)
u/zanella

Or, if you want to keep it really precise, replace *1.57 with /.64.