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.

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yonatan

remix of d/9345 by u/yonatan

function u(t) {

f=f=>(f(i)+f(z=i**.5)+f(t))*i/15-w
for(x[r='fillRect'](e=C(t),w=-600,i=2e3,i);i--;x[r](f(S)-e*w,f(C),z,z))x.fillStyle=R(q=(3-C(e-i))**4,q,q)

Aug 26 2018 9:07 PM UTC

}// 141/140

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DataMeta: Shader w/o compression is massively impressive
aleamb: incredible..
lionleaf: Very impressive! #d3 #snail #light

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BalintCsala

function u(t) {

with(x)t?k-=.1:arc(0,0,370,0,7,translate(960,540,k=2,fillStyle="#080")),font="8em A",k<0&&rotate(.314,k=2),fill(fillText("🌳",-70,k*50-395))

Aug 27 2018 8:05 PM UTC

}// 139/140

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Xen: love it
katkip: haha nice

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DataMeta

remix of d/9444 by u/DataMeta

function u(t) {

v=Math.abs;for(c.width|=i=360;i--;)
x.ellipse(960,b=540,b**v(C(i+t)),b**v(S(i)),t,-i,7);x.stroke();

Aug 27 2018 7:48 PM UTC

}// 100/140

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DataMeta: Superellipse approximation

katkip: This one looks dope.

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yonatan

function u(t) {

for(i=1e3;t<3&&i--;x.fillRect(960+S(i)*q,(1200/t)+C(i)*q,9,9))q=(2+S(i*6)**3)*t**4.5,x.fillStyle=R(a=t**1.6*55,a*1.5,t*t*15)

Aug 28 2018 11:00 PM UTC

}// 124/140

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joeytwiddle: Excellent! Angel's trumpet. #flower #organic
yonatan: Thanks! I was wondering what's that tree's name was

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ellisk1

remix of d/9453 by u/ellisk1

function u(t) {

t?X=Math.random()*2400-99:Y=0;x.fillStyle=`hsla(${3*t+X/9*C(q=t/50)+Y/5*S(q)},80%,50%,.04)`;x.beginPath();x.arc(X,Y,200,0,7);x.fill();Y=X/2

Aug 27 2018 10:47 PM UTC

}// 139/140

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ellisk1: Slowly shifting gradient v2

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aleamb: stylish!
magna: #waitforit
ellisk1: Thanks! Yeah it does take some time to get going ha

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alien

remix of d/2842 by u/alien

function u(t) {

w=c.width=180
f=frame
for(j=0;j<w;j++)
for(i=0;i<w;i++){
q=(i*i+j*j)**3+9*f&w
s=i*(q/45)
s%=255
x.fillStyle=R(s,s*2,s)
x.fillRect(i,j,1,1)}

Aug 28 2018 7:56 PM UTC

}// 148/140

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f8f82804

remix of d/9486 by u/f8f82804

function u(t) {

x.drawImage(c,-15,-9.2,1950,1098);x.font=99*(1+t%1)+'px a';m=x.measureText(s='🛤');x.fillText(s,960-m.width/2,530+m.width/2)

Aug 28 2018 7:31 PM UTC

}// 123/140

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joeytwiddle: Wow! Great effect. :D

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Xen

remix of d/9484 by u/f8f82804

function u(t) {

if(t%1<.01)with(o=(a=new AudioContext).createOscillator())connect(a.destination),start(),stop(a.currentTime+1);o.frequency.value=99*S(t*9&t)

Aug 27 2018 9:11 PM UTC

}// 140/140

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Xen: little song for you :-P

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f8f82804

remix of d/9465 by u/prplz

function u(t) {

let s=128;x.setTransform(1,S(t),C(t),1,960,540);for(Y=p=20;Y--+p;)for(X=q=32;X--+q;x.fillRect(X*s,Y*s,s,s))x.fillStyle=(X+Y)%2?'#000':'tan'

Aug 27 2018 6:44 PM UTC

}// 139/140

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f8f82804

function u(t) {

f=a=>j*S(i^j)/24+a;with(x)for(i=22;i-->10;)for(j=18;j--;strokeRect(2,2,58,58))setTransform(1,0,0,1,f(60*i),f(60*j)),rotate(f(0)),lineWidth=3

Aug 28 2018 10:29 PM UTC

}// 140/140

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f8f82804: A tribute to _Schotter_ -- Georg Nees, 1968

joeytwiddle: #art #tribute