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/16128 by u/rodrigo.siqueira

function u(t) {

for(X=Y=K=i=3e3;i--;)x.fillRect(i**t%3||X--*K,Y*K,Y+=X=(X-Y)/2,8)

Oct 25 2019 5:22 PM UTC

}// 65/140

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65bytes #dragoncurve #waitforit .... massive shoutz to rodrigo.siqueira!

u/Xen

i'm gonna get beaten 😂😂😂😂
u/KilledByAPixel

64! for(X=Y=K=i=3e3;i--;Y+=X=(X-Y)/2)x.fillText(0,i**t%3||X--*K,Y*K)
u/Xen

FrankForce done gone got 64b.....
u/Xen

fully upset right about now!... back in 90 years for the 33byte yea????
u/DataMeta

Marked it in my calendar! ;)

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jellyedwards

remix of d/16288 by u/robbyg

function u(t) {

with(x)for(rect(0,440,a=c.width|=0,a),clip(arc(960,35*t,300,0,7)),i=60;i--;fillStyle=R(z=400-i*t,z/2,i*i-t*t))fillRect(0,i*40,a,25+i/2)

Oct 25 2019 6:39 AM UTC

}// 135/140

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Lots of space to animate it

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katkip

function u(t) {

for(i=2e3;i--;)x.fillStyle=R(z=100+C(i*2.3+t*39)*100,z,z*S(t+i)),x.beginPath(),x.ellipse(960+S(i*2+t)*i,540+C(i*2+t)*i,19,49,t,0,7),x.fill()

Oct 29 2019 6:41 PM UTC

}// 140/140

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Bee spiral

u/Xen

smooooth

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Xen

remix of d/16351 by u/KilledByAPixel

function u(t) {

for(c.width=i=99;a=i-->>3;x.ellipse(50,9+a%2*31,22,9,0,q=t-(i-a)*1.563%25,q))x.stroke()

Oct 28 2019 4:59 PM UTC

}// 87/140

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slight golf

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metamero

function u(t) {

for(i=999;--i;i&1&&x.fillRect(z*(i%23),z*(i/23|0),z,z))z=90

Oct 29 2019 3:37 PM UTC

}// 59/140

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59B checkered pattern ! new ultra-golf challenge ! rules proposed on discord

u/New_Core

I didnt read the rules but here is a 48B for(i=166;i--;)x.fillRect(i%24*90,i%14*90,90,90)
u/pavel

Would be good to put the rules here... Can the scale be not 90? Seems like a bad number. 120 fits nicely horizontally and vertically, I'd choose that. Or a power of two for possible bit twiddling.
u/metamero

rules of this one: - full render on first/each frame - full resolution - exact 12 squares on vertical

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Xen

remix of d/16334 by u/katkip

function u(t) {

for(j=i=99;i--;x.fill())x.beginPath(x.fillStyle=R(i^t,S(t*j)*j,C(t*i)*j,.1)),x.arc(960+S(t)*i*t,540+C(t)*i*t,t+S(t*i)*t,0,t)

Oct 27 2019 9:52 PM UTC

}// 124/140

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https://www.youtube.com/watch?v=qTNgowXRCYo

u/Xen

visual+audio
u/tomxor

I wish there was a way to autolink youtube videos as an audio source for dweets ... behind an automuted UI obviously.

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larzuk

remix of d/16077 by u/larzuk

function u(t) {

a="O‮HOBFUSCATE";c.width=w=320;for(i=0;++i<64e3;)u=i%w,v=i/w|0,x.fillStyle=R(m=u^v,m,m),x.fillRect(u,v,1,1)

Oct 27 2019 4:18 PM UTC

}// 107/140

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BLACK MAGIC FUCKERYIII

u/Xen

noicely dahn!
u/Irratix

wha
u/tomxor

‮wha

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KilledByAPixel

function u(t) {

eval(unescape(escape`𦐽𝠰𜀭𠰨𭀯𝐩𚠲𝐰𞱷𪑴𪀨𮀩𩡯𬠨𩡩𫁬𤡥𨱴𚀰𛀰𛁣𛡷𪑤𭁨𯀽𮠽𪐽𜑥𜰬𜡥𜰩𛁥𫁬𪑰𬱥𚁘👺𚱃𚁴𛰳𚐪𚀹𜀰𛑙𚐬𦐬𦐬𦐯𞐬𜀬𜀬𝰩𞱩𛐭𞱦𪑬𫁒𩑣𭀨𮠫𬀪𚁘𛑺𛑙𚐬𬀪𦐬𜠪𦐪𬀬𜠩𚑦𪑬𫁓𭁹𫁥👒𚁡👩🰱𝐵𛑩𛰹𞠲𝐵𛁡𛁡𚠮𝰩𛁰👩𛱺𞱸𛡦𪑬𫀨𚐻`.replace(/u../g,'')))

Oct 26 2019 4:16 PM UTC

}// 140/140

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Empty Spotlight

u/katkip

Spotlight
u/katkip

Moonlight
u/KilledByAPixel

#Inktober day 26: Dark

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larzuk

remix of d/16337 by u/larzuk

function u(t) {

x.fillText('BLACK‮ 2CIGAM ',400,600);x.font='148px Monospace';

Oct 27 2019 4:10 PM UTC

}// 63/140

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u/Irratix

wha
u/CalSch

Someone please explain

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larzuk

function u(t) {

x.font='148px Monospace';
x.fillText('BLACK‮CIGAM',400,600);

Oct 27 2019 4:07 PM UTC

}// 60/140

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BLACK MAGIC FUCKERY

u/tomxor

0x202E wow unicode is too powerful, it even flips the parens.
u/tomxor

Weird, so to make it more confusing the browser obviously apples the control char all chars after, but the JS lexer ignores it, it only gets interpreted inside the string... by whatever renders it.
u/larzuk

‮I actually wonder how the rest of the text on the page is not being reversed too :(
u/tomxor

‮I guess control chars can't break out of elements? otherwise madness would ensue on the web :P