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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katkip

function u(t) {

eval(unescape(escape`𨰮𭱩𩁴𪀪🐱𞰻𪑦𚀡𭀩𦀽𞐶𜀬𦐽𝐴𜀬𭠽𜀬𤠽𜐮𝐷𛰲𞱦𫱲𚁩🐴𞱩𛐭𞰩𮀮𨑲𨰨𦀫𤰨𪐪𜐮𝐷𚱒𚐪𞐹𛀨𦐫👶𚰽𛠲𚐫𠰨𪐪𜐮𝐷𚱒𚐪𞐹𛀰𛀰𛀰𚐻𮀮𩡩𫁬𚀩𞱩𩠨𦐾𜐰𞀰𛐹𞐩𭠪🐭𛠸𚱃𚁶𚐯𞐬𤠫👓𚁶𚐫𜐮𝐷𛰲𞱷𪁩𫁥𚁙🠱𜀸𜀭𞐹𚑙𛐽𛠰𜐠`.replace(/uD./g,'')))*yes

Jul 28 2020 7:23 AM UTC

}// 140/140

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u/donbright

hahaha

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veubeke

function u(t) {

x.fillRect(0,0,2e3,2e3)
for(X=22;X--;)for(Y=13;Y--;x.fillText(['🦩','🍉'][$],X*89+Y*5-60,Y*90+y))$=(X+Y)%2,y=S(t*5+X+Y)*8,x.font=(6-$*2)+'em"'

Jul 27 2020 7:59 AM UTC

}// 140/140

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u/Billedluh

mmmmm
u/andrea270872

nice. I feel on holiday just by looking at this! :)
u/donbright

100% makes sense.

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remix of d/19535 by u/IV

function u(t) {

c.width=(w=960)*2,h=540
for(i=5e3;i--;)
D=C(p=i*t)*(v=i%8/3-1),
X=S(q=i/T(t))*D,Y=S(p)*v,Z=C(p)*D+3,
x.fillRect(w+X/Z*w,h+Y/Z*w,9/Z,9/Z)

Jul 27 2020 5:20 PM UTC

}// 136/140

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more pixels, less speed, easier to watch, and more shells. #physics ?

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remix of d/9098 by u/mvs202

function u(t) {

χ=S(t)*(W=960)
c=(h,a,b)=>{χ<0?x.fillStyle=`hsla(${h},99%,50%,.01)`:0
x.fillRect(W-χ,a,χ*2,b)}
c(t*53,0,300)
c(t*59,315,150)
c(t*47,480,600)

Jul 27 2020 12:38 AM UTC

}// 140/140

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fixed on #Edge, made space by removing mod on colour, decreased alpha. ahhh better.

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nikoloffgeorgi

remix of d/18805 by u/nikoloffgeorgi

function u(t) {

c.width|=e=0;x.lineWidth=99;for(i=0;i<80;x.globalAlpha=i/80,x.beginPath(),x.arc(960,540,S((t+9)*i*.05)*80+400,e,e+=.3),x.stroke(),i++);

Jul 24 2020 8:06 PM UTC

}// 135/140

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u/magna

Love this!
u/ycloud

Great

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function u(t) {

c.width=(w=960)*2,h=540
for(i=1e3;i--;)
D=C(p=i*t)*(v=i%3/3+1),
X=S(q=i/T(t))*D,Y=S(p)*v,Z=C(q)*D+3,
x.fillRect(w+X/Z*w,h+Y/Z*w,s=30/Z,s)

Jul 27 2020 12:12 AM UTC

}// 137/140

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a very nippy electron #tiny3d

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remix of d/19511 by u/IV

function u(t) {

t||c.replaceWith(g=c.cloneNode());
with(g.getContext('webgl'))(enable(3089),scissor(t,Y=t*S(t),50,Y),clearColor(0,0,0,1),clear(16384))

Jul 27 2020 4:13 PM UTC

}// 134/140

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bouncing #webgl

u/IV

drop in a t*=3; to hurry it up. change "with(g." to "with(c, " while remixing. change c back to g before posting.
u/IV

@nikiloffgeorgi
u/IV

139B: t||c.replaceWith(g=c.cloneNode());with(g.getContext('webgl'))(enable(3089),s=S(t),scissor(t,Y=s*s*t,50,Y),clearColor(0,0,0,1),clear(16384))

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ycloud

function u(t) {

c.width=999
for(i=-200;i<340;i++)
x.fillRect(-20-i*-99+C(t)*999,90,50,1000)
for(i=-200;i<300;i++)
x.fillRect(-20+i*-99+T(t)*999,90,50,1000)

Jul 27 2020 7:30 AM UTC

}// 139/140

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A old movie mechanism

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remix of d/19494 by u/IV

function u(t) {

d=x.getImageData(0,0,w=c.width=256,h=c.height=w/2)
for(i=0;i<h;i++)for(j=0;j<w;j++)d.data[(i*w+j)*4+3]=(i^j%w)*9*t%w
x.putImageData(d,0,0)

Jul 24 2020 7:36 PM UTC

}// 139/140

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xor squares (i^j%w) #xor

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nikoloffgeorgi

function u(t) {

c.width|=a=99;t||(v=o=4)
t%2<.01&&(o=Math.random()*v+3)
while(a--)x.fillRect(a*20,0,20,500+S(a/20-t*8+v)*a*(v+=(o-v)/999))

Jul 25 2020 12:38 PM UTC

}// 123/140

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