Dwitter - javascript demos in 140 characters

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.

Try the new frontend: beta.dwitter.net
Current theme challenge: #Food

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petermel

remix of d/22014 by u/KENZYY

function u(t) {

for(i=0;i<400;i++)
x.rotate(10*1000*100*0.5)
x.translate(i*4,800)
x.rect(i*S(t)*9,111,9,i*T(t*5)*0.5)
x.stroke()
x.translate(i,i*2)

Mar 17 2021 3:31 PM UTC

}// 138/140

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Tubes

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KENZYY

function u(t) {

x.stroke()
x.rotate(1000000*100*10*2)
x.translate(100, 800)
for(i=0;i<150;i+=5)
x.rect(2,4,6,50)
x.stroke()
x.translate(100, 800)

Mar 17 2021 3:07 PM UTC

}// 135/140

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Forloops doesnt matter - everything will be black, and there is nothing to do about it.

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magna

function u(t) {

c.width=192
for(i=9;i--;)x.fillRect(40+i*10+S(t)*30,40,5,20)
x.putImageData(new ImageData(x.getImageData(10,40,150,20).data,30,100),162,0)

Mar 16 2021 12:26 AM UTC

}// 138/140

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Image data remapping experiment #default

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KENZYY

remix of d/20457 by u/rodrigo.siqueira

function u(t) {

for(c.width|=w=5+10+1000,i=1e3;i--;x.lineTo(w+w*X/Z,w*Y/Z*540))
X=(S(V=i/10))*S(U=V*6e3+t/10)*5,Y=(C(V/U))*S(V*5)*10,Z=C(U)+Y/t
x.stroke()

Mar 17 2021 2:15 PM UTC

}// 138/140

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My eyes hurt...

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TommyVelz

function u(t) {

c.width+=0
x.font='bold 7cm courier'
s='skroWthguohT'
x.translate(960,540)
for(i=12;i--;)x.fillText(s[i],-80,-350),x.rotate(S(t)/2)

Mar 15 2021 10:54 PM UTC

}// 131/140

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Ulla62

remix of d/21959 by u/Ulla62

function u(t) {

i=(t*500)%30
x.fillStyle=R(i*8,i*9,i*7)
x.fillRect(1912,532+C(t)*32,99,4)
d=c.height/c.width
x.drawImage(c,-12*d,-4,c.width+8*d,c.height+8)

Mar 15 2021 8:32 AM UTC

}// 139/140

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KilledByAPixel

function u(t) {

for(i=2e3,c.width=w=60;i--;)x.fillRect(X=i%w,Y=i/w|0,1,T(Y|X+t*w*Y/9)/9)

Mar 13 2021 6:11 AM UTC

}// 72/140

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Express Train Past Factories 🚄🏭

u/tomxor

I like it. Reminds me of your castle #parallax d/17367
u/KilledByAPixel

Thanks! This one turned out interesting for how simple it is.

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Xen

remix of d/21949 by u/danny@hille.dk

function u(t) {

for(t?i=2e3:c.width=w=58;i--;x.fillRect(X,Y,1,1))x.fillStyle=`hsl(${i/(S((X=i%w)/6)*C((Y=i/w)/3+t*4+C(X/Y))*9)+t*w},99%,50%,.1)`

Mar 15 2021 12:15 AM UTC

}// 128/140

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"remiix" is a term?

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sasaso7

remix of d/21962 by u/danny@hille.dk

function u(t) {

c.style.filter='(3'
for(i=3e3;i--;x.fillRect(X*31,Y*30,25,25))x.fillStyle=R(r=5*t/+C((X=i%64)/2)*C((Y=i>>6)/3+t+S(X/3-t*10))*25,r*0.2,10)

Mar 14 2021 9:19 PM UTC

}// 137/140

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Alive Pasta

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taupelink

remix of d/21971 by u/taupelink

function u(t) {

for(i=k=120;--i;x.fillRect(k*X,k*Y,w=i/t*S(h/9&168),w))f=i*t,X=f*f%16,Y=X*f%9,x.fillStyle=`hsl(${h=i*Y^X},${i*S(h^X)}%,${C(Y/8)%S(h*X)*i}%)`

Mar 16 2021 4:31 AM UTC

}// 140/140

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d/21984