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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Xen

remix of d/21003 by u/katkip

function u(t) {

for(c.width|=Z=99;Z--;c.style.filter="blur(3em)contrast(9)")x.beginPath(x.fill(x.arc(960+S(Z*3-t)*19*Z,540+C(Z+t)*13*Z,80,0,9)))

Dec 15 2020 10:19 PM UTC

}// 128/140

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play and golf 128

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Pascal

function u(t) {

eval(unescape(escape`𨰮𬱴𮑬𩐮𩡩𫁴𩑲🐢𨡬𭑲𚀱𛠵𩑭𚑣𫱮𭁲𨑳𭀨𞐹𚐢𞱦𫱲𚁣𛡷𪑤𭁨𯀽𪐽𜐲𛁴𛰽𜠻𪐭𛐻𚑰👮🐾𫠪𚁍𨑴𪀮𨑳𪑮𚁓𚀨𭀫👩𚐫𭀪𚁮𛰱𜁥𝀩𚐩𛰳𛠱𝀫𛠵𚐬𮀮𩡩𫁬𤱴𮑬𩐽𨀣𜀰𙁻𪐥𜱽𨀬𮀮𩡩𫁬𤡥𨱴𚁰𚀱𝠷𜀩𚰲𝐬𬀨𞀳𜀩𚰲𝐬𜠰𜀬𜠰𜀩`.replace(/u../g,'')))

Dec 14 2020 9:03 PM UTC

}// 134/140

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12 black and blue bouncing #metaballs

u/Pascal

c.style.filter="blur(1.5em)contrast(99)";for(c.width|=i=12,t/=2;i--;)p=n=>n*(Math.asin(S((t+=i)+t*(n/10e4)))/3.14+.5),x.fillStyle=#00${i%3},x.fillRect(p(1670)+25,p(830)+25,200,200)

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ciaccodavide

remix of d/20965 by u/ciaccodavide

function u(t) {

eval(unescape(escape`𨰮𭱩𩁴𪁼🐱𒡷𪑴𪀨𮀩𮱦𪑬𫁓𭁹𫁥🐧𘱆𠠰𙰊𩡩𫁬𤡥𨱴𚀰𛀰𛀳𩐳𛀳𩐳𚐊𩡩𫁬𤱴𮑬𩐽𙰣𜀰𜀧𒡦𫱲𚁩🐹𞱩𛐭𞰩𫑯𭡥𥁯𚁨🐹𝠰𛁫🐵𝀰𚐬𨑲𨰨𪀬𪰬𝠰𚡩𛁴𛀶𛑩𚐊𩡩𫁬𚀧𩑶𩑮𫱤𩀧𚑽`.replace(/u../g,'')))

Dec 11 2020 6:20 PM UTC

}// 115/140

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Radioactive Radar

u/danny@hille.dk

nice
u/joeytwiddle

So #radioactive even the warning symbol is corrupted
u/magna

Stylish!

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Pascal

function u(t) {

for(i=k=100,t/=1.5;i--;)x.fillRect(959+500*S(t+i*3.142/k)*S(t+i),539+500*S(t+i*3.142/k)*C(t+i),2,2)

Dec 15 2020 10:01 AM UTC

}// 99/140

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Mandala

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rodrigo.siqueira

remix of d/20961 by u/cantelope

function u(t) {

for(x.fillRect(0,0,i=2e3,i);i--;x.clearRect(960+Y/(Z=d+8)*(h=540),h+X/Z*h+i/9,6,X))X=S(i)*(G=T(q=i/45))-1,Y=S((Z=q*9)+t)*(d=T(Z*9))

Dec 12 2020 12:11 AM UTC

}// 131/140

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Aligning the stars (cosmic axis) #stars

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lerc

function u(t) {

eval(unescape(escape`𭁼𯀨𨰮𭱩𩁴𪀽𜰲𜀩𒡸𛡦𪑬𭁥𬠽𘡢𫁵𬠨𜀮𝑰𮀩𨡲𪑧𪁴𫡥𬱳𚀹𞐥𚑨𭑥𛑲𫱴𨑴𩐨𜡤𩑧𚐢𒡸𛡤𬡡𭱉𫑡𩱥𚁣𛀰𛀭𜰩𒡦𫱲𚁩🐳𜠰𞱩𛐽𜠻𚑻𮀮𩡩𫁬𤱴𮑬𩐽𨁨𬱬𚀳𝀰𛀱𜀰𙐬𙁻𤰨𠰨𭀪𪐩𚡩𚱴𚠸𚐪𜠰𚰸𜁽𙐩𨀊𮀮𩡩𫁬𤡥𨱴𚁩𛀱𞐰𛀲𛀸𚑽`.replace(/u../g,'')))

Dec 14 2020 7:49 AM UTC

}// 135/140

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Old style effect, experimental new canvas features

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rodrigo.siqueira

remix of d/20948 by u/rodrigo.siqueira

function u(t) {

c.width|=0
for(var i=5e3;i--;f(0,K=i%2,280,i))
f=(w,h,q,d)=>q>99?f(C(t*2+K)*h+q*C(d+t),w+q*S(d+t),q/2,i*i):x.fillRect(w+480+930*K,h+510,5,9)

Dec 10 2020 9:43 PM UTC

}// 140/140

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Rotating Double Donuts #torus #donut 🍩🍩

u/TGY

I don't think you need "var" there. It works fine without it :)
u/New_Core

nice, and its 5 FPS faster with the "var" then without on my old machine.

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TGY

function u(t) {

throw u.toString()
//Fair enough for quine?

Dec 12 2020 2:55 PM UTC

}// 43/140

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Quine (not golfed)

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cantelope

function u(t) {

eval(unescape(escape`𩡯𬠨𮀮𩡩𫁬𤡥𨱴𚀰𛀰𛁩🐲𩐳𛁩𚐻𪐭𛐻𮀮𨱬𩑡𬡒𩑣𭀨𞐶𜀫𦐯𚁚👃𚁰𚐪𩀫𞀩𚠨𪀽𝐴𜀩𛁨𚱘𛱚𚡨𛀵𛀸𚐩𦀽𤰨𬀽𪐯𜰮𜐸𜰩𚠨𡰽𤰨𬐽𚁩𛰲𜁼𜀩𛰹𛠵𝐫𭀩𚐫𡰪𝀬𦐽𤰨𬀽𣑡𭁨𛡡𭁡𫠲𚁙👃𚁰𚐬𦠽𠰨𬐩𚠴𚱓𚁰𚐪𠰨𬐩𚐫𭀩𚠨𩀽𣑡𭁨𛡨𮑰𫱴𚁙𛁚𚐩`.replace(/u../g,'')))

Dec 11 2020 2:39 PM UTC

}// 140/140

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perspective torus #d3

u/rodrigo.siqueira

I always learn a lot about perspective by reading Cantelope's code. Thanks!

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jellyedwards

remix of d/20959 by u/jellyedwards

function u(t) {

for(e=k=c.width|=w=60;n=--k/w|0;x.fillRect(j=k%w/12|x.rotate(k%w/1.9+R*t),S(n**j),1,1))x.setTransform(v=n%9,0,R=-R|1,R*v,e*S(m=n+t),m*v*w%e)

Dec 11 2020 5:33 PM UTC

}// 140/140

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each #snowflake spins and sways

u/KilledByAPixel

nice!
u/sigveseb

Nice snowflakes!