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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ellisk1

function u(t) {

b=960;with(x)for(c.width|=i=18;i--;fill())beginPath(r=(t+i)%2),arc(X=b+(q=b*(r-(z=r|0))*z)*C(a=i*.7+t),Y=540+q*S(a),r*b,a,a+.6),lineTo(X,Y)

Sep 26 2018 5:24 AM UTC

}// 139/140

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Infinite Pizza

u/katkip

#infinite

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d0n.key

function u(t) {

for(c.width=340,i=320;i--;x.font=7+C(j=t*9+(X+Y)/2)+'pt a',x.fillText(["⚫","🔴","😊"][Y/5|0],40+C(j)+X*14,18+S(j)+Y*12))Y=i%15,X=i>>4

Sep 26 2018 9:38 AM UTC

}// 131/140

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Germanized it

u/d0n.key

Remix of https://www.dwitter.net/d/10078
u/joeytwiddle

#flag

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marc8

function u(t) {

c.width=w=1920
t||(a=b=250)
e=q=>2.71**(q/50)
onmousemove=m=>(a=e(m.x),b=e(m.y))
for(i=0;i<w;i++)x.lineTo(i,540+b*S(t+i*a/1e4))
x.stroke()

Sep 26 2018 10:09 PM UTC

}// 138/140

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Mouse driven waveform

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Purpzie

remix of d/888 by u/jczimm

function u(t) {

c.width|=0;for(i=0;i<2e3;)x.fillRect(950+200*C(a=0|i++/6)*S(T(t/1.1)+i%6/a),550+200*S(a),9,9)

Sep 27 2018 7:27 PM UTC

}// 93/140

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Shaved off 16 characters!

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katkip

function u(t) {

for(i=-1;i++<100;)for(j=-1;j++<100;)x.fillStyle=
S(i**2+j**2+i/j-j/i+C(j+i)*i+t)<0?'lime':"#000",x.fillRect(i*19,j*19,19,19)

Sep 27 2018 5:55 PM UTC

}// 124/140

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Example of entropy in math. #gameoflife 2

u/joeytwiddle

You keep using that hashtag incorrectly!
u/joeytwiddle

https://www.quora.com/Can-the-universe-as-a-…
u/joeytwiddle

https://www.researchgate.net/post/Is_there_a…

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joeytwiddle

remix of d/9844 by u/f8f82804

function u(t) {

c.width=1920,x.font='20em"'
for(i=-300;i<2e3;i+=99+t)x.fillText('🐖',i,625+200*S(i/15-4*t))

Sep 25 2018 6:39 AM UTC

}// 90/140

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Soothing #swine wave

u/katkip

Haha!
u/katkip

That's a wierd centypede
u/magna

Looks like a work by Cyriak Harris

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Agnes

function u(t) {

x.font="5em A"
x.fillText("If you remix this, the code is totally different! Try it!",50,70)

Sep 28 2018 4:54 PM UTC

}// 92/140

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Thanks u/BalintCsala for the crazy invisible JS injection trick you found that makes this possible!

u/Purpzie

no thanks
u/prplz

MAGICIANS HATE HIM! AMAZE YOUR FRIEND AND FAMILY WITH THIS ONE SIMPLE TRICK

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Purpzie

remix of d/10100 by u/Purpzie

function u(t) {

c.width=1e3
for(i=0;i<100;)with(x)lineWidth=i*10+S(t*2)*75,beginPath(),moveTo(50+i*200,-50),lineTo(i++*14,800),stroke()

Sep 27 2018 3:43 PM UTC

}// 119/140

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zebra but smaller

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katkip

function u(t) {

eval(unescape(escape`挮睩摴株㴱㭤㴨焬攬温㴾砮晩汬剥捴⡱⭮⨱〰⭓⡴⤪㌰〬攬㔰ⰲ〰⤻景爨椽〻椫⬼㤻⥤⠴〰ⰲ〰Ⱪ⤬搨㐰〫匨椪匨琩⭴⨲⤪㄰ⰷ〰⭃⠭椪䌨琯㤩⭴⨳⤪㄰Ⱪ⤻砮晩汬却祬攽✣〰晤✬砮晩汬剥捴⠰ⰵ㐰ⰲ攳ⰲ攳⤻`.replace(/u(..)/g,"$1%")))

Sep 23 2018 2:19 PM UTC

}// 140/140

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The most #realistic #water reflection Dweet ever!

u/joeytwiddle

Very nice! #default
u/sigveseb

Rocks hard

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SodaPOP

remix of d/10130 by u/Purpzie

function u(t) {

r=_=>Math.random()-.5;with(x)fillStyle=`hsl(${t*100} 50%50%)`,drawImage(c,r()*99,r()*99),font='500px"',fillText('UWU',175,700)

Sep 28 2018 1:01 PM UTC

}// 126/140

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