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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f8f82804

function u(t) {

d='   ';
a=47+2*((2*t|0)%12);
for(i=c.width^=0;i--;)d.charCodeAt(i%d.length)>>8&&x.fillRect(a*(i%a|0),a*(i/a|0),a,a);

Aug 23 2018 5:34 PM UTC

}// 122/140

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Xen

remix of d/9299 by u/katkip

function u(t) {

for(i=2e3;i--;x.fillStyle=`hsla(${i^5*frame%2e3},99%,30%,.01)`)x.fillRect(i,0,2,39);x.drawImage(c,0,39)

Aug 21 2018 5:28 PM UTC

}// 103/140

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katkip

function u(t) {

function F(a,b){return T(a*b+frame/529)*S(a+b)<0};c.width=w=100;for(i=0;i<=w;i++)for(j=0;j<w;j++)if(F(i,j))x.fillRect(i-1,j-1,1,1)

Aug 23 2018 12:15 PM UTC

}// 130/140

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Building the #city !

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katkip

remix of d/9370 by u/katkip

function u(t) {

eval(unescape(escape`楦⠡琩筩㴰㭸⹴牡湳污瑥⠹㘰ⰵ㐰⤻睨楬攨椼㝥㌩筩⬫㭡㴱㐵ㄻ戽㠵㔻挽㔹ㄲ㭸⹦楬汓瑹汥㵠桳污⠤筩紬㤹┬㔰┩总砮晩汬剥捴⡓⡩⩡⤪㔴〬䌨椪戩⨵㐰ⰲ攳ⰱ⤻砮牯瑡瑥⡣⤻絽`.replace(/u(..)/g,"$1%")))

Aug 23 2018 11:46 AM UTC

}// 126/140

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f8f82804

remix of d/9412 by u/f8f82804

function u(t) {

x.drawImage(c,-17,-10.2,1954,1100);x.font='480px a';t%1.1>.01||x.fillText('🛤',720,780)

Aug 24 2018 11:51 PM UTC

}// 86/140

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riding the rails

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katkip

function u(t) {

if(!t){i=0;x.translate(960,540)}x.fillRect(Math.sin(i)*540,Math.cos(i)*540,Math.tan(i)*65,1);x.rotate((i++,0))

Aug 23 2018 9:27 AM UTC

}// 110/140

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Math logo creator

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f8f82804

function u(t) {

x.font=10*(s=4+t%2)+'em a';x.fillText('🛣',960-s*80,540+s*55)

Aug 24 2018 11:27 PM UTC

}// 60/140

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Road trip!

u/f8f82804

No idea how this will work on other browsers or platforms. It works OK, though a little choppy, on Firefox 61/Linux

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meowmixjw

function u(t) {

for(c=0;c<64;c++)for(r=0;r<36;r++)l=S(t)*(S(c/4)+C(r/4.5-t*2))*150,x.fillStyle=R(l/2,255/l,l,C(l)),x.fillRect(c*30,r*30,30,30)
//Portals :)

Aug 20 2018 8:15 PM UTC

}// 139/140

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u/DataMeta

Nice one

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Xen

remix of d/9390 by u/katkip

function u(t) {

for(i=2e3;i--;x.fillStyle=`hsla(${T(i*S(t/9)/99)*i/9},80%,60%,.1)`)
x.fillRect(0,i,1,1);x.drawImage(c,9+C(t)*5,S(t*t)*2);

Aug 23 2018 6:04 PM UTC

}// 121/140

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Xen

function u(t) {

x.lineTo(1e3+C(Z=t*93.39)*Z+C(t)*t,500+S(Z)*Z+S(t)*t)
x.stroke()

Aug 23 2018 5:44 PM UTC

}// 64/140

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64byte Dwitter Art

u/BirdsTweetCodersDweet

More like MS Logo... :P