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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nikoloffgeorgi

function u(t) {

c.width|=a=100

while(a--){
x.lineWidth=2
x.lineTo(a*20, (t*1000+(Math.random()*2-1)*30+a*S(t*0.1)*50) % 1000)
}
x.stroke()

Jan 24 2020 9:59 PM UTC

}// 123/140

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KilledByAPixel

function u(t) {

for(c.width|=z=i=800;i--;x.fillRect(946+S(a)*z,940+C(a)*99,59,50*(i%20>5)+300*(i%160>65)-z))x.fillStyle=R(v=99+99*S(a=i/127+t),v/4,9,C(a)+1)

Jan 23 2020 3:36 AM UTC

}// 140/140

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#Castle

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KilledByAPixel

remix of d/17360 by u/KilledByAPixel

function u(t) {

with(x)for(c.width|=i=w=513;a=i--/.477465;fill(arc(960+i*S(a),430+i*C(a),f?30:99,0,7)))beginPath(f=i<w-3),fillStyle=R(v=(i*2+t*w*f)%255,v,v)

Jan 23 2020 6:57 PM UTC

}// 140/140

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Flux Capacitor #uncompressed

u/katkip

owo

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rodrigo.siqueira

function u(t) {

c.width+=0
for(i=2000;i--;){
 Z=i/350
 X=C(i/80+t*5)
 Y=S(i/80+t*5)
x.fillRect(
 980+150*(X*C(t/2)-Z*S(t/2)),
 500-Y*150+Z*C(t*.8)*59,
9,9)}

Jan 25 2020 12:16 AM UTC

}// 140/140

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Rotating helix #D3. Simple code (not golfed) for readability and meant to be remixed for other rotating D3 projects.

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yonatan

remix of d/10782 by u/yonatan

function u(t) {

for(i=c.width=99;i--;)for(k=j=56;j-->-k;)x.fillRect(i,j/2+28,1/t,j>0?(S(j*j+i/j-t*7)+C(j**5-i/j*6+t)**3)*j/k:Math.hypot(j+t*9,i-k)/300/t)

Jan 20 2020 6:48 PM UTC

}// 137/140

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sunrise

Show more comments…
u/denzen

Amazing!
u/tomxor

Holly **** ! or a nuke on the horizon :P
u/aleamb

Brutal!!!
u/aleamb

#sunrise #sea #landscape #sun
u/13thptr

thought about a nuke too x) gret job
u/13thptr

*great
u/katkip

!! awesome
u/Leodude123

Coll
u/Leodude123

Sorry I misspelled that
u/Leodude123

I meant cool!
u/eduft15

nice man!

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iznax

function u(t) {

c.width=800;p=(a)=>x[b](400+S(a)*"4335"[k>>1]*32,90+C(a)*8+k*48)||p;for(z=43;--z;p(t,b='moveTo')(t+=7,b='lineTo')(t,++k)(t-7),x.fill())k=z%7

Jan 22 2020 6:11 AM UTC

}// 140/140

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#Castle Rook

u/KilledByAPixel

♜👍

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KilledByAPixel

function u(t) {

eval(unescape(escape`𭱩𭁨𚁸𚑦𫱲𚁩👴🰱𞡘👙🐲𩐳𛁺👧𩑴𢑭𨑧𩑄𨑴𨐨𦀬𦐫𞐬𜐬𜐩𛡤𨑴𨑛𜡝𞱩𛐭𞱢𩑧𪑮𤁡𭁨𚁦𪑬𫀨𩑬𫁩𬁳𩐨𭀿𦀺𪐬𭀿𦐫🐹𞠲𜀰𚡓𚁩𛰲𞐹𚐭𝀰𜀬𬐽𮠿𜰺𚁙🐰𛁘🐱𩐳𚱓𚁴𚐪𞐰𜁼𜀬𞐹𚐬𭀿𬐺𜑥𜰬𜀬𜀬𝰩𚐩𚑦𪑬𫁓𭁹𫁥👴𙠦𮠿𙰣𡡆𡠧𞠧𘰰𜀳𙰻`.replace(/u../g,'')))

Jan 22 2020 11:34 PM UTC

}// 140/140

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Bombs Away! 💣

u/tomxor

hah nice, oldskool colision detection :)
u/katkip

Reminds me of pocket tanks
u/tomxor

wait... this is almost literally your name :D

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Xen

function u(t) {

for(X=i=1e3;i--;x[i%2?'fillRect':'clearRect'](956+956*X,536+536*Y,9,9))X=S((Y=X/2)-C(i-t)*t*i/4e3)

Jan 24 2020 3:48 PM UTC

}// 98/140

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lil play about

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Xen

remix of d/17358 by u/rodrigo.siqueira

function u(t) {

x.font=`${t*T(i=t)}in'`
for(k in x)p=P=>1e3*S(i*P),x.fillStyle=R(p(i),p(.9),p(t),.02),x.fillText(t,S(t+i++)*i,i*i*C(i)),x.rotate(C(i)/i)

Jan 24 2020 3:25 PM UTC

}// 136/140

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Xen Remix, Shoutz 2 Mr rodrigo.siqueira

u/Xen

ScreenShot whenever for new wallpaper

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yukulele

function u(t) {

c.width+=j=0
for(i=-t*5;i<1e3;j=i++*2.4)x.beginPath(x.fillStyle=`hsl(${i*t**2},99%,50%`)+x.arc(960+C(j)*i,540+S(j)*i,i**.5,0,7)+x.fill()

Jan 22 2020 6:17 PM UTC

}// 136/140

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🌈🌻

u/f8f82804

#phyllotaxis
u/Xen

love it
u/Odog8

yes, phi