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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AnnanFay

function u(t) {

x.putImageData(x.getImageData(X=t**3%1*2e3,Y=X**3%1e3,9,99),X,Y+9)};{I=new Image
I.crossOrigin=I.onload=_=>x.drawImage(I,0,0)
I.src='//具.pw'

Feb 12 2018 12:21 AM UTC

}// 140/140

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!h6q: please link https://picsum.photos/1920/1080?random

u/AnnanFay

38 remaining after 74 characters to load an image and 28 for x.(get/put)ImageData. If anyone can figure out how to get more characters it would be awesome!

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akm

function u(t) {

f=n=>String.fromCharCode(n&127),eval("㟦ᑲᝣ㓷㩤㹨㒽Ჽ㒻ᚭᒻ᝸㓦㙬㋒㩣ᨨᠰ㒫ᢪᠰ⦫㨨ᔩᠳᘰᠴᘰᠵ᤬ᠰ".split``.map(c=>c.charCodeAt(0)).map(n=>f(n)+f(n>>7)).join``+`)`)

Feb 10 2018 10:21 PM UTC

}// 135/140

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Alternatively, in 106 chars: eval("㟦ᑲᝣ㓷㩤㹨㒽Ჽ㒻ᚭᒻ᝸㓦㙬㋒㩣ᨨᠰ㒫ᢪᠰ⦫㨨ᔩᠳᘰᠴᘰᠵ᤬ᠰᶩ".replace(/./g,c=>String.fromCharCode((c=c.charCodeAt())&127,c>>7)))

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bokoskokos

function u(t) {

c.width|=0;f=Math.PI*2;x.font='220px Arial';x.fillText('🏀',870,500+S(t*5)*200);x.ellipse(1010,750,90+S(t*5)*50,10,0,f,0);x.fill()

Feb 8 2018 10:54 AM UTC

}// 129/140

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u/New_Core

played around with it a bit... c.width|=0;x.font='6cm Arial';x.fillText('🏀',870,800+S(a=2*-t%3.2)*500);x.ellipse(1030,850,99+S(a)*60,10,0,7,0);x.fill()
u/DirtyDan

Made it less "floaty" d/6806
u/bokoskokos

Much better!

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New_Core

remix of d/6830 by u/Yogeshp3

function u(t) {

x.shadowBlur=99,c.style.background=x.shadowColor=`hsl(${t*99},85%,50%)`,x.fillRect(960+500*C(t*5),500+400*S(t*4),a=99+25*C(t),99+25*S(t))

Feb 10 2018 9:42 PM UTC

}// 137/140

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sj_

function u(t) {

x.fillStyle=R(15*t,100,200);
x.fillRect(
 c.width/2 + C(t) * 500,
 c.height/2 + S(t) * 500,
10,10);

Feb 11 2018 9:40 PM UTC

}// 99/140

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DirtyDan

remix of d/6798 by u/bokoskokos

function u(t) {

a=-Math.abs(S(t*5))
c.width|=0;f=Math.PI*2;x.font='220px Arial';x.fillText('🏀',870,715+a*200);x.ellipse(1010,750,90+a*50,10,0,f,0);x.fill()

Feb 8 2018 10:48 PM UTC

}// 139/140

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u/joeytwiddle

#bounce

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albertarv

function u(t) {

//by @taki_bump
c.style.background=`url(//pbs.twimg.com/media/BdzojveCMAAOKcK.png) 
 rgb(${l=Math.floor(S(t)*128+128)},${l},${l}) 0/contain`

Feb 7 2018 11:38 PM UTC

}// 140/140

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u/AnnanFay

Note: Anyone who can't get this to work - you need to disable tracking protection in browser settings.
u/cantelope

love this. way to think outside of the box :)

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AnnanFay

remix of d/6823 by u/PietPtr

function u(t) {

for(i=0;i<960;i++)
r=Math.random(),
x.fillStyle=R(S(t+i/420)*255,S(r)*255,C(r)*200),
x.fillRect(960-(r*1920)/2,i*r,r*1920,r*i)

Feb 9 2018 11:45 PM UTC

}// 126/140

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Just messing around and thought it looked cool.

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bokoskokos

function u(t) {

c.width|=0;for(i=0;i++<500;)x.fillStyle=`hsl(${i},80%,70%)`,
x.fillRect(980+i*C(t+i)*10*S(t+i),500+i*S(t)*5,20*C(t+i),20*C(t+i))

Feb 9 2018 11:27 AM UTC

}// 128/140

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selfawaresoup

function u(t) {

f=n=>(Math.random()*n)|0;x.fillStyle=`hsl(${t*10},90%,${50+45*S(t)}%`;d=(f(2)+1)*100-20;x.fillRect(f(18)*100,f(10)*100,d,d);

Feb 8 2018 11:47 PM UTC

}// 124/140

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