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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Wammbox

function u(t) {

for(i=~~(t*9);i--;){
x.rotate(0.45*i)
x.fillStyle=R(255-t*i,255-t*i,255-t*i)
x.fillRect(S(t)*99*i, S(t)*99*i, S(t)*200, S(t)*200)}

Jan 17 2018 5:57 AM UTC

}// 130/140

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Xen

remix of d/6129 by u/RUNIE

function u(t) {

for(c.width|=i=0;i<64;x.fillRect((a=2e3*i/128)+S(t+i++/9)*99,a/(3+C(t)),2e3-a*2,2e3/1.5-a))x.fillStyle=R(b=i*(S(t*i/99)+3),i,b*C(t))

Jan 17 2018 11:08 PM UTC

}// 132/140

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End.Of.Tunnel Shoutz RUNIE

u/Qwitter

Slightly frightening. Extra [Awesome!]
u/RUNIE

trippy :D

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echox

function u(t) {

c.width=C(t)*2999;x.fillStyle=R((t*99)%99,(t*99)%255,(t*99)%99);for(b=0;b<9999;b+=99){for(a=0;a<9999;a+=99){x.fillRect(a,b,50,50)}}

Jan 17 2018 12:53 PM UTC

}// 131/140

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@no_identd

remix of d/6148 by u/@no_identd

function u(t) {

x.fillStyle=R(...[S,C,T].map(_=>127*(_(t)+1)));a=2.2142975*frame;r=7.159191*frame**0.43015972;x.fillRect(r*C(a)+960,r*S(a)+540,8,8)

Jan 18 2018 12:52 PM UTC

}// 131/140

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@no_identd

remix of d/6156 by u/meks

function u(t) {

c.style.background=R();b=t*100;x.fillStyle=R(b%200,0,120+(b%120));a=2.3999631*frame;r=8*frame**.5;x.fillRect(r*C(a)+960,r*S(a)+540,8,8)

Jan 18 2018 12:47 PM UTC

}// 135/140

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DonKarlssonSan

remix of d/6084 by u/DonKarlssonSan

function u(t) {

t?1:x.translate(960,540)
for(i=799;i--;x.fillRect(i*1.5,0,9,9))x.rotate(i/5e4),x.fillStyle=`hsl(${i+t*69},90%,66%)`

Jan 15 2018 10:26 PM UTC

}// 115/140

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Yogeshp3

remix of d/6174 by u/jy1989

function u(t) {

r=(x)=>(5*x*t%255)

x.fillStyle=R(r(1),r(2),r(3))
x.fillRect(6*t+150*S(t),T(t)*150+540,10,10)
x.fillRect(T(t)*150+960,6*t+150*S(t),10,10)

Jan 19 2018 11:06 AM UTC

}// 137/140

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Blacklink

function u(t) {

a=t*.5^1
for(z=i=c.height^=0;i>0;i--){x.fillStyle=R(m=i/z*255,m,99);x.fillRect(S(t+i*a)*886+886,i,150,1)}x.font='99px f';x.fillText(a,99,99)

Jan 17 2018 10:18 AM UTC

}// 140/140

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Updated with better colours and way to change the speed, standard of .5; still counts weird but that's okay

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coderkid

remix of d/6153 by u/BackendForth

function u(t) {

c.width|=0;a=[24,60,126,219,255,60,126,165];for(j=8;j--;)for(i=8;i--;)if((a[j]>>i)%2)x.fillRect(i*99+S(t)*500+564,j*99+99,96,96);

Jan 17 2018 7:58 PM UTC

}// 129/140

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u/donbright

impressive .. alot of people pack bytes into unicode but this is straight up integers

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jy1989

function u(t) {

c.width=1920 // clear the canvas
v='Hello'
x.font='99px Arial'
x.fillText(v,t*100,540+T(t*22)*200)

Jan 18 2018 9:33 AM UTC

}// 98/140

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