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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Sebnem

function u(t) {

tscc.width=1920; /* clear the canvas */
  for(i=0;i<9;i++)rc
  x.fillRect(400+i*100+S(t)*300, 400, 50, 200) /* draw 50x200 rects */

Jul 31 2017 3:46 PM UTC

}// 131/140

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magna

remix of d/11185 by u/magna

function u(t) {

x.fillRect(0,0,2e3,2e3);for(i=8418;i--;x.clearRect(X*16-16+S(a=t*9-(X*60+(Y-34)**2)**.4)*14,Y*16+C(a)*14,4,5))X=i%122,Y=i/122|0

Nov 28 2018 2:30 PM UTC

}// 127/140

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Ripples in fabric

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Xen

function u(t) {

x.globalCompositeOperation='xor';t?x.drawImage(c,w/4*(t*9%3|0),h/2*(((t*9%3|0)+1)%2),w/2,h/2):x.fillRect(0,0,w=1920,h=1080)

Aug 10 2017 10:07 PM UTC

}// 123/140

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making this gave me such a headache, can you spot a simple 4bytes to shave? ;-)

u/Xen

dont post here, you see it when you see it, let others use this as target practice.

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cheekyKhuckle

function u(t) {

c.width=1980
for(i=-9;i<27;i++){x.beginPath()
x.arc(980,540,50 + 90 * Math.abs(T(t+i)),0,9)
x.fillStyle='hsl('+i*99+',70%,50%)'
x.fill()}

Dec 16 2021 3:00 PM UTC

}// 137/140

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u/magna

Groovy!

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rodrigo.siqueira

remix of d/34918 by u/rodrigo.siqueira

function u(t) {

c.style.filter=`invert(`
for(𝕏=X=Y=i=3e4;i--;𝕏=X,x.fillRect(Y*900+960,X*1600+210,t<1,.1))
X=T(X*X-Y*Y)+.27,Y=T(𝕏*Y-.02+S(i/1.02+S(i+t)%1)/3)

May 5 2026 2:28 PM UTC

}// 140/140

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Silk surface

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taupelink

remix of d/31822 by u/taupelink

function u(t) {

f=(u,m=i&6)=>(m>1?f(u,m*.9)/p-m:u/5%p-p/2)**2;g=_=>f(X)+f(Y)&9;for(i=2e4;i--;x.fillRect(150+18*X,18*Y,g(p=3)<g(p=2),t<4))X=i*i*t%90,Y=X*i%60

May 24 2024 3:04 PM UTC

}// 140/140

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d/31872

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Forge

remix of d/10398 by u/Forge

function u(t) {

for(x.fillRect(o=12,0,i=n=c.width=900,n);i-=o;)for(j=0,a=((n*i^1e9)+n*t)%n;j<a;j+=o)x.fillStyle=R(b=n*(o>a-j),n/2+j-a,b),x.fillText(j%9,i,j)

Oct 13 2018 9:36 PM UTC

}// 140/140

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Slightly larger/slower

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matt.mcalister93

function u(t) {

for(i=2;i<9;i++){
x.fillStyle=R(200*C(t),0,200*S(t))
s=S(i*t/7)*250
c=C(t/i)*500
x.fillRect(c+960,s+540,9,9)
x.fillRect(-s+960,c+540,9,9)}

Jan 12 2018 5:17 PM UTC

}// 138/140

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katkip

function u(t) {

c.width^=0;for(i=1;i<10;i++)for(j=1;j++<24;)x.fillRect(540+2*j+i*100+S(t)*300,200,2,200+C(j+i)*10),x.rotate(1/j/200+C(t)/999)

Oct 6 2018 2:09 PM UTC

}// 125/140

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Coil #default

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katkip

remix of d/13239 by u/katkip

function u(t) {

f=x=>(C(x/4)*2+S(x/9)/29)/9;t||(X=Y=s=4);for(i=99;i--;)x.fillRect(1160+X*s+f(i/99)*159,250+Y*s+f(i/99)*159,5,5),Y+=f(X),X+=f(Y)

Apr 15 2019 5:31 AM UTC

}// 127/140

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On firefox there is something else