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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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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Blacklink

function u(t) {

z=2000;c.height=z;a=S(t)*25+30;for(i=0;i<a;i++){for(j=0;j<a;j++){x.fillStyle=R(i*300/a,0,j*300/a);x.fillRect(j*z/a,i*z/a,z/a+1,z/a+1)}}//yey

Jan 16 2018 9:12 PM UTC

}// 140/140

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dogspace

function u(t) {

for(z=0;z<20;z++) 
for(y=0;y<11;y++) {x.fillStyle=`hsl(${(z+y)*t}, 100%, ${(S(t)/2+1)*50-y}%)`;a=100;x.fillRect(z*100, y*100,S(t)*a,T(t)*a)}

Jan 15 2018 12:21 AM UTC

}// 140/140

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fourth dweet

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DonKarlssonSan

remix of d/6078 by u/DonKarlssonSan

function u(t) {

x.strokeStyle=R(f=T(t)*99%256,f,f,1)
r=m=>Math.random()*m
x.beginPath()
for(i=99;i--;x.stroke())
x.moveTo(960,580),
x.lineTo(r(2e3),r(1e3))

Jan 15 2018 8:14 PM UTC

}// 139/140

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jonathan_b

function u(t) {

for(c.width|=s=i=504;i-=168;)for(j=s;j-=36;)q=j+i+t,x.lineTo(s*2+s*2*C(j)*C(q),s+s*C(i*4)*S(j+q+t)),x.lineWidth=i/j,x.stroke()

Jan 19 2018 3:04 AM UTC

}// 126/140

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sandromiccoli

remix of d/5854 by u/sandromiccoli

function u(t) {

c.width=2e3;x.globalCompositeOperation='xor';for(i=~~(t*9);i--;){a=i*.52;x.beginPath();x.arc(960+C(a)*199,540+S(a)*199,199,0,7);x.fill()}

Jan 13 2018 3:30 AM UTC

}// 137/140

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little donut remix: d/5999

u/iverjo

#xor