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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Infidel

remix of d/16121 by u/Infidel

function u(t) {

t?x.rotate(.5*Math.PI):x.translate(960,540);while(t<2&&x.ellipse(C(t)*440,S(t)*200,100,100,0,0,10));x.stroke();x.strokeStyle=R(10,50,90,2-t)

Oct 15 2019 1:59 PM UTC

}// 140/140

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Math Pulsar

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New_Core

function u(t) {

a=Math.random()*7+4
for(i=~~a;i--;x.fill())x.beginPath(),x.fillStyle=R(d=255-i*20),x.arc(t**a%2e3,1e3,i*5,0,7)
x.drawImage(c,.5*S(t),-1)

Oct 14 2019 8:27 AM UTC

}// 136/140

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asteriskman

function u(t) {

c.width|=0
x.font='9em"'
i=t%1.7
x[f='fillText']('🚶',9,n=999)
x[f]('🏇',m=1700,n+S(t*9)*9)
x[f]('🎃',m-i*n,n-S(i*1.8)*n/3)
x[f]('🌙',9,199)

Oct 15 2019 1:23 PM UTC

}// 136/140

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Inktober Day 15 - Legend

u/joeytwiddle

lol what legend is this?
u/asteriskman

Sleepy hollow!

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KilledByAPixel

remix of d/16031 by u/KilledByAPixel

function u(t) {

eval(unescape(escape`𪐽𜐶𚱴𯀰𞱲👩𙐲𝀻𩡯𬠨𪰽𝀻𪰭𛐻𚑲𚰽𝠫𤰨𞐹𚡫𚡴𛰨𜠸𚱃𚁩𚠪𪰩𚠹𚐩𚠴𞱷𪑴𪀨𮀩𩡩𫁬𚁥𫁬𪑰𬱥𚁩𙐱𝠪𜐱𞐫𝠵𛀨𨡥𩱩𫡐𨑴𪀨𮠽𭀥𜐪𞐹𚐬𪐾🠴𚐪𜐷𝐭𮠪𚀱𚱓𚁩𚠪𝐩𛰳𚐬𬠬𞐬𜀬𜀬𝰬𩡩𫁬𤱴𮑬𩐽𨁨𬱬𚀹𘀴𞐥𙁻𮠼𞐷🱺𛰲𚰴𚡲𙐲𞐺𞑽𙑠𚐩`.replace(/u../g,'')))

Oct 12 2019 5:59 PM UTC

}// 140/140

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3D Clay Vases #MultiDweet

u/DataMeta

Amazing! #realistic #compressed
u/aleamb

wow! love it!
u/fourier.space

❤️

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KilledByAPixel

remix of d/16115 by u/KilledByAPixel

function u(t) {

eval(unescape(escape`𭱩𭁨𚁸𚑦𫱲𚁳𭁲𫱫𩐨𚐬𨡥𩱩𫡐𨑴𪀨𬠽𫠽🡃𚁩𚠪𫠩𚠹𯀰𚐬𪐽𭀪𝡼𜀬𬱴𬡯𪱥𤱴𮑬𩐽𨁨𬱬𚀤𮱲𚀵𚐪𝀰𯐬𙁻𞐰𚱲𚀷𚑽𙐬𙁻𭀿𝐰𚰶𚡲𚀶𚐺𜁽𙐬𛠰𝑠𛁪🐱𩐳𞱪𛐭𞱬𪑮𩑔𫰨𞐶𜀫𥀨𤰩𛀵𝀰𚱔𚁃𚐩𚑔👦🐾𜠹𜀪𚁲𚀴𚐪𩠨𬠨𜰩𚡪𛰴𚐫𩠨𬠨𜠩𚡪𛰴𚐩`.replace(/u../g,'')))

Oct 15 2019 12:52 AM UTC

}// 140/140

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Big Spiro

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rodrigo.siqueira

remix of d/16064 by u/KilledByAPixel

function u(t) {

for(K=i=1100;i--;x.fillStyle=R(q*i,i/9,p*i),x.fillRect(C*K+560,S*K+370,2,2))p=C||0,q=S||0,C=(p/1.5-q)/2,S=(p+q)/2,T(t**i)|0||(w=S,S=C,C=1-w)

Oct 13 2019 10:31 PM UTC

}// 140/140

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Fractal Color Dragon Curve #dragoncurve

u/KilledByAPixel

👍

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RealPeha

function u(t) {

for(x.globalAlpha=.5,x.beginPath(),i=0;i<4;i++)
h=(i%2?4-i:8)*t,
m=860-S(h)*i*150,n=500+C(h)*i*150,i?x.lineTo(m,n):x.moveTo(m,n),x.stroke();

Oct 14 2019 2:27 PM UTC

}// 140/140

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Spirograph

u/RealPeha

change the variable h, for example h=(i%3?3-i:10/2)*t
u/RealPeha

or change max i value in for loop - i<20 and h=(i%20?10-i:20)*t

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afs

remix of d/16141 by u/afs

function u(t) {

p=Math.PI;with(x)for(c.width|=i=40,translate(960,540);i--;)q=p/20,beginPath(fill(arc(C(t+i*q)*400,S(t+i*q)*200,8,0,6)))

Oct 16 2019 9:11 PM UTC

}// 119/140

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afs

function u(t) {

p=Math.PI;with(x)for(c.width|=i=40,translate(960,540);i--;)q=p/20,beginPath(fill(arc(C(t+i*q)*500,S(i*(p/20))*400,8,0,6)))

Oct 16 2019 8:52 PM UTC

}// 122/140

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veubeke

remix of d/16047 by u/veubeke

function u(t) {

with(x)
globalAlpha=!fillRect(globalAlpha=.1,0,2e3,1e3),
font='40em"',
fillText('🎃',640,800),
drawImage(c,C(t*5)*2-40,S(t*5)*2-40,2e3,1160)

Oct 14 2019 6:37 PM UTC

}// 139/140

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u/magna

#glow