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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function u(t) {

s=20;w=48;h=27;c.width|=0
F=i=>(x.globalAlpha=C(i*t),x.fillRect((w+X)*s,(h+Y)*s,s,s))
for(X=-w;++X<w;)for(Y=-h;++Y<h;)u=X/w,v=Y/h,F(u*u+v*v)

Jul 21 2020 11:13 PM UTC

}// 140/140

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nikoloffgeorgi

function u(t) {

!t&&c.parentNode.append((d=c.hidden=c.cloneNode(),b=d.getContext('webgl'),b.viewport(0,0,1,1),b.clearColor(1,0,0,1),b.clear(0x000004000),d))

Jul 22 2020 9:01 PM UTC

}// 140/140

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paint with webgl

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u/IV

a webgl that does something, and leaves 39 chars to play with
u/IV

whoops, meant to put that in the remix note, then the remox failed, bad day ;)
u/IV

here we go; https://www.dwitter.net/d/19511
u/nikoloffgeorgi

u/IV that's really cool. i wonder if anything beyond animating the color uniformly can be done within 140 chars
u/IV

This is 140 chars. If you can mix it with your moving cubes code and golf it down, youre winning! t||c.replaceWith(g=c.cloneNode());i=t|0; with(c.getContext('webgl'))(enable(0x0C11),scissor(i,i,i,i),clearColor(C(t),S(t),t,1),clear(16384))
u/IV

u/nikoloffgeorgi I did this: d/19541, (but I cant do comments properly yet) Your turn!

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taupelink

function u(t) {

g=z=>T(z)>1?C(z):T(z)*g(z+.1)
f=(d,h,i)=>i>.01?x.fillRect(960+d*C(h),540-d*S(h),g(d+S(h))<.01,g(d%h)>g(h+i))||f(d+.8,h+i,i*.98):0
f(0,t,1e4)

Jul 23 2020 1:41 PM UTC

}// 140/140

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d/19503

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taupelink

remix of d/19466 by u/taupelink

function u(t) {

f=(x,y=2)=>S(x)<y?S(x)*f(x-6,y/2):1;for(i=z=1e3;i--;)X=(r=Math.random)()*21,Y=r()*16,x.fillRect(X*90,Y*70,f(X+3*Y)*f(X|Y)*5<f(X*X)*f(X^Y),1)

Jul 21 2020 10:59 PM UTC

}// 140/140

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d/19487

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remix of d/2767 by u/jick

function u(t) {

g='globalCompositeOperation';
(T(t)<.5)?x[g]='xor':x[g]='copy'
r=Math.random;W=c.width;H=c.height;
x.fillRect(r()*W,y=r()*H,a=r()*W/6,a)

Jul 21 2020 10:00 PM UTC

}// 136/140

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#xor

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DaSpider

remix of d/19436 by u/DaSpider

function u(t) {

t?1:document.write(`<p style="word-wrap: break-word;">${eval(`for(a=z=2n*10n**26502n,d=1n;a*=d;)z+=a/=d+++d`)}`)

Jul 19 2020 4:05 PM UTC

}// 112/140

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#Pi galore

u/Irratix

0_0

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Billedluh

function u(t) {

eval(unescape(escape`𭀽𭀥𝀯𜠊𮀮𩡯𫡴🐢𜠳𩑭𙰢𒡦𫱲𚁬🐰𞱬🀹𜀰𞱬𚰫𚑻𪐽𫀥𜐵𛁫🐨𫀯𜐵𯀰𚐥𜐰𛁪👬𛰱𝐰𯀰𒡔👴𛑩𛑪𛰵𛑫𛰱𝰫𜐳𒡸𛡦𪑬𫁔𩑸𭀨𘡜𭑻𜑆𞐶𨑽𘠬𜐰𜀪𚀴𚡫𚱪𚠳𛐹𚐬𞐹𚠨𝀪𜰫𜐮𝐪𪠭𪰭𚁩𛑴𚐪𚀳𚱓𚁔𚠳𜠩𛰨𥀪𞐵𚐩𛰴𛐱𝐪𚀱𛑔𚠹𚐪𚁔🀮𜐩𚐩𯐻`.replace(/u../g,'')))

Jul 20 2020 12:18 AM UTC

}// 140/140

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Sammich Factory

u/magna

Awesome!
u/Billedluh

c.width|=onmousemove=e=>c.a=e.y,a=c.a if(!a)y=Array(6).fill(0),v=[...y] y[0]=a*3 x.font="25em'" for(i=1;i<5;i++)r=y[i]+=v[i]+=2+((b=y[i-1]-y[i]-84)<0?b/5-v[i]/2:0),x.fillText('\u{1F96a}',500,r)

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smtsjhr

function u(t) {

c.width|=0;x.translate(980,540);for(f=32;f--;){for(i=400;i--;){x.fillRect(200*S(t/5)*(200-i+t%1),-1e4,10+10*S(t/5),1e4)}x.rotate(f*.19634)}

Jul 20 2020 11:07 PM UTC

}// 139/140

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taupelink

remix of d/19451 by u/taupelink

function u(t) {

f=(x,y=1)=>S(x)<y?C(x)*f(x+.1,y*.7):y;for(i=z=1e3;i--;)X=(r=Math.random)()*21,Y=r()*16,x.fillRect(X*90,Y*70,f(X&Y)*f(z/X/Y)<f(X|Y)*f(X%Y),1)

Jul 20 2020 9:36 PM UTC

}// 140/140

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d/19466

u/rep_movsd

Amazing

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function u(t) {

c.width=1920
for(i=0;i<9;i++)
x.fillRect(400+i*100+S(t*i)*300,50*i*2,50,200)

Jul 21 2020 2:25 AM UTC

}// 76/140

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noob

u/IV

#default