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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kchplr

remix of d/2938 by u/kchplr

function u(t) {

for(c.style='image-rendering:pixelated',c.width=i=130;i--;)for(j=70;j--;)x.fillRect(i,j,1,C(i*i*j*j*8+frame*8&768)<0)

Aug 9 2017 11:11 AM UTC

}// 117/140

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Same as the original but with c.style='image-rendering:pixelated' to look better and the same size

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cantelope

function u(t) {

for(V=(c.width=1e3)/2,H=j=99;j--;x.stroke())for(x.beginPath(),i=H,Z=i-j;i--;x.lineTo(V+X/Z*V,(S(i/5+C(t)*4)*C(j/9-t*7)*j/9+30)/Z*V))X=H-i*2

Aug 6 2017 6:10 AM UTC

}// 139/140

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mostly what i was going for... not exactly.

u/joeytwiddle

smooth

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artfarnaa

function u(t) {

 for (c.width|=a=48;--a;x.arc(960+S(G+t)*400,
 540+C(t+G*1)*400,a%2*137*Math.abs(S(t))*8,0,
 6.2832))x.moveTo(G=a/2|0,0)
 x.fill('evenodd')

Aug 8 2017 1:14 AM UTC

}// 140/140

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leonarven

remix of d/1973 by u/jes5199

function u(t) {

for(g=new Float32Array(1),t*=60,b=1080;b--;)(g[0]=18*(t-960)*(b-540))-g[0]>0&&x.fillRect(t,b,1,1)

Aug 9 2017 6:55 PM UTC

}// 97/140

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Just for exercise

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Xen

remix of d/3031 by u/yokljo

function u(t) {

X=999,x.globalAlpha=.02;x.save();x.rotate(S(t));x.fillRect(S(t)+X,X/T(t),S(t)*X,C(t)*X);x.restore();x.drawImage(c,S(t)*X,C(t))

Aug 8 2017 12:34 AM UTC

}// 126/140

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51 Shades of Grey

u/cantelope

wish it would keep going... but all things must eventually come to an end i guess...
u/Xen

it passed out....

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Xen

remix of d/3030 by u/New_Core

function u(t) {

x.globalAlpha=.2;for(x.fillRect(0,0,2e3,W=j=980);--j;x.clearRect(W+S(p=t+j-j*V)/Z*W-Z*S(t)*9,540+C(p)/Z*W,s=60/Z,s))Z=j%99-t*6+(V=t*6|0)

Aug 7 2017 11:53 PM UTC

}// 136/140

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Anti-Doesn't_Matter :-

u/cantelope

lol!
u/Xen

;-) lol, Shoutz to all [-CGT-]

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cantelope

function u(t) {

for(x.fillRect(0,0,2e3,2e3),W=960,j=99;--j;)for(i=3;i--;x.clearRect(W+S(p=2.1*i+j/9-6.17*V)/Z*W,540+C(p)/Z*W,s=99/Z,s))Z=j-t*6+(V=(t*6)|0)

Aug 7 2017 2:58 AM UTC

}// 138/140

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Xen

remix of d/2355 by u/cantelope

function u(t) {

x.save(),x.translate(y=960,540);for(i=69;i--;x.fillStyle=`hsla(${i*9+t},99%,40%,.1`,x.fillRect(a=i*9,a,-a,-a),x.rotate(C(t)*.4));x.restore()

Aug 6 2017 8:41 PM UTC

}// 140/140

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Xen

remix of d/3017 by u/kchplr

function u(t) {

for(i=0;i<99;Y=S(i*2+t),X=(C(3*i)+C(t+i+Y)),x.fillRect(960+X*450,536+Y*500,i,i))i+=.5,x.fillStyle=`hsla(${i*i},99%,50%,.01`

Aug 5 2017 3:19 PM UTC

}// 123/140

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An lsd inkblot inspired by Kchplr inspired by Cantelope

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yokljo

remix of d/3031 by u/yokljo

function u(t) {

x.globalAlpha=.1
x.save()
x.rotate(S(t*2)*.2)
x.scale(S(t),C(t))
x.fillRect(S(t)*700+900,C(t*5.2)*100+400,200,200)
x.restore()

Aug 8 2017 5:39 PM UTC

}// 126/140

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Just playing around on my phone