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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sukkamehu

function u(t) {

k=Math.random;c.width=1920 // clear the canvas
for(i=0;i<9000;i++)
x.fillRect(k()*800-1,k()*800-1,2,2)

May 28 2018 7:20 PM UTC

}// 102/140

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sukkamehu

remix of d/8269 by u/Xen

function u(t) {

for(a=j=99;j--;x.fillStyle=`hsl(${j-t*a},99%,50%)`)for(i=9;i--;x.rotate(t^a)){x.fillRect(Z=j*24,X=S(j/5+t*9)*a-a,a,a)}

May 28 2018 6:38 PM UTC

}// 118/140

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DataMeta

function u(t) {

c.width=1920;
for(i=0;i<60;i++){
x.fillStyle=R(128*S(t),196*S(t+i/3.146),255*S(i+3.146*t))
x.fillRect(i*32,60-C(1.86*t+(i*3))*50,32,960);}

May 27 2018 4:21 AM UTC

}// 138/140

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Xen

remix of d/855 by u/mxfh

function u(t) {

λ=r=480;c.width=r*3;for(φ=a=Math.PI;φ>-a;x.lineTo(C(φ)*S(λ+t)*r+λ/8,(C(t=t+φ/r)*S(φ)+S(t)*C(φ-=1/r)*C(λ+t*φ))*r+r))λ+=a;x.stroke()

May 24 2018 5:48 PM UTC

}// 130/140

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u/graue

mystify my mind

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DataMeta

remix of d/1129 by u/kballinas

function u(t) {

c.width=1920;
for(i=0;i<192;i++){
x.fillStyle=R(i/6,S(i+t),2*(t+i),.9)
x.fillRect(720+S((t/16)*(i-Math.log(t)))*720, 10*i, 560, 56)
}

May 25 2018 6:24 PM UTC

}// 133/140

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The stroboscopic effect takes a few seconds to spool up

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Tesseract

remix of d/8219 by u/Tesseract

function u(t) {

t||(p='m 512 224',d=0)
x.lineWidth=3
x.stroke(new Path2D(p+=["h-13","v13","h13","v-13"][(d++).toString(2).match(/1/g).length%4]))

May 24 2018 2:19 AM UTC

}// 129/140

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u/prplz

so cool!
u/Xen

one of my new top dweets
u/lionleaf

#path
u/Tesseract

#fractal

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sawaxon

remix of d/8236 by u/sawaxon

function u(t) {

a=50,c.width|=0;for(j=0;j<599;j++)for(i=0;i<9;){x.fillStyle=`hsl(${++i*5+190},99%,50%)`
x.fillRect(j*4,S(j/50+t*4)*a-a,99,99),x.rotate(55)}

May 25 2018 12:30 AM UTC

}// 140/140

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u/iverjo

#water

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Xen

remix of d/4136 by u/Exca

function u(t) {

for(i=2e3;i--;x.fillRect(S(t*3+i)*456*S(C(t*7)+i%89)+1e3*(i==0?-1:1),i,s=i==0?2920:9-d*8,s))d=C(t*i),x.fillStyle=R(i,0,i*t%i,.2)

May 24 2018 6:16 PM UTC

}// 128/140

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johnbruin

function u(t) {

c.width=-1
x.translate(150,85)
for(j=9;j--;){
x.font=j/5+'em a'
x.rotate(t)
for(i=21;i--;)x.rotate(.3),x.fillText("CIRCLE*"[i%7],0,j*20)}

May 23 2018 9:33 PM UTC

}// 137/140

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#text

u/magna

#circle

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DataMeta

remix of d/8027 by u/cesque

function u(t) {

c.width|=0;p=Math.PI;x.lineWidth=60;for(i=1;i<20;i++){x.beginPath();x.arc(960,540,50+(i*50)+S(t+i/p)*50,t+(i*3)+S(t),t/i+(i*p));x.stroke()}

May 24 2018 7:24 PM UTC

}// 139/140

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u/joeytwiddle

What is it? Is it trying to share its technology, or eat us?
u/DataMeta

Haven't been able to evoke a response from it. It just keeps broadcasting this signal.