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: #Opposites

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KilledByAPixel

remix of d/32732 by u/KilledByAPixel

function u(t) {

eval(unescape(escape`󭽩󭍨󚍸󚝦󫽲󚍪󟜰󞽪󟌱󜼻󚼫󪬩󩭯󬬨󨬽󝬶󞽢󛜭󞽢󩝧󪝮󤍡󭍨󚍦󪝬󫌨󨝲󨼨󪜪󞌳󚼸󜌫󡬨󤼩󛍪󚬸󜼫󡬨󠼩󛍪󟼲󜌺󜝥󝌬󜌬󞜩󚜩󚝩󟝢󛼳󯌰󛍫󟝢󙜳󛍦󪝬󫍓󭍹󫍥󟝪󟽫󟽫󟬱󟽒󚌩󞬧󘽦󩭦󙼺󙼣󩬲󜬧󞬧󘼰󞍤󙼬󡬽󩬽󟬨󪼾󜜿󛜵󞬵󚭫󚜪󚌱󛝃󚍴󛼲󚜩󚭦󚍩󛼲󚽪󚜻`.replace(/u../g,'')))

Nov 11 2024 7:09 PM UTC

}// 138/140

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Illusory Motion Animation ⚪🔴⚫

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0x61

remix of d/32676 by u/0x61

function u(t) {

t||(a=1e3,p=0,e=0);e<t&&(v=!/^.?$|^(..+?)\1+$/.test('1'.repeat(p)),v?(x.font='1e3% x',x.clearRect(0,9,a,a),x.fillText(p,-9,a),e++,p++):p++)

Nov 13 2024 10:30 AM UTC

}// 139/140

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Just wanted to make the wait for primes shorter #regex #primes

u/fentbiggesthater

giving free coding tutoring sessions dm me if interested.
u/fentbiggesthater

no hate i love it i love prime numbers

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0x61

function u(t) {

t||(a=0,x.font="2e3% x",p=z=>`${z}`.padStart(2,'0'));~~t>a&&(x.clearRect(0,0,2e3,2e3),x.strokeText(`${p(~~(++a/60))}:${p(a%60)}`,620,700))

Nov 13 2024 9:06 AM UTC

}// 138/140

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You have been staring at this for #time

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KilledByAPixel

remix of d/32728 by u/KilledByAPixel

function u(t) {

z=t*20|0
for(c.width=i=240;i--;)for(j=135;j--;)x.fillRect(i,j,1,S(((i%32-16)**2+(j%32-16)**2<99-S(t)*99+49?(j>>5)*32+i%32-z:j-z)**9)**2)

Nov 10 2024 7:29 PM UTC

}// 136/140

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Animated Coffer Illusion 🔮

u/cantelope

#coffer #cofferillusion
u/joeytwiddle

Great illusion and great dweet! #illusion #opticalillusion

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bibo

function u(t) {

R=_=>Math.random()*2-1;x.font=3e2*R()**1+"px'";k=(R()+1)*9>>0
x.fillText(String.fromCodePoint(0x1f600+(k==8?1:k)),960+R()*12e2,540+R()*6e2)

Nov 13 2024 6:15 AM UTC

}// 139/140

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#emoji

u/fentbiggesthater

🤣😂😊🎶😢💖🐱‍👤🐱‍🏍🐱‍🚀🌹✔😉🍆🏴👴🏿👴🏿👴🏿👴🏿👳🏿‍♂️👲🏿👷🏿‍♂️👨🏿‍🌾👨🏿‍🔧 heh i thought it would fit since its also emojis!

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0x61

function u(t) {

c.width*=1;for(i=32400;i--;){Math.random()>.4&&x.fillRect(i%240*8,8*((i/240)>>0),8,8)}

Nov 11 2024 10:17 PM UTC

}// 86/140

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Just wanted to see how short I could make some #static

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vchoulga

function u(t) {

r=480;c.width=r*4;λ=0;for(φ=a=2.5;φ>-a;φ-=1/r){λ+=a/9;x.lineTo(2*r+C(t)*S(λ+t)*r,(S(φ)*C(λ-t)+C(φ)*S(λ+t))*r+r)}x.stroke()

Nov 12 2024 8:57 PM UTC

}// 123/140

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KilledByAPixel

function u(t) {

for(i=240,t?t=t*60|0:c.width=i;i--;)x.fillRect(i,t,1,S(((i%32-16)**2+(t%32-16)**2<99?(t>>5)*32+i%32:t)**9)**2)

Nov 10 2024 7:20 PM UTC

}// 110/140

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The Coffer Illusion 🧐

u/cantelope

#coffer #cofferillusion
u/cantelope

i have seen this, not sure who made it here
u/fentbiggesthater

same ive seen it too, stolen?, can we get a moderator to check this out✌💕😁
u/KilledByAPixel

i dont think there is a dweet for it, but it is a very well known illusion

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SockTaters

function u(t) {

x.fillText(R,9,t)

Nov 11 2024 10:10 AM UTC

}// 17/140

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#barcode #waitforit

Show more comments…
u/SockTaters

Might have been done before, but I didn't see anything under the barcode hashtag. Between u, t, c, x, S/C/T, and R, R looks the best to me.
u/tomxor

Damn that's small. For some reason this elicits the sound of a dot matrix printer in my head.
u/KilledByAPixel

nice! there are a few other barcodes, this is my fav: https://www.dwitter.net/d/7868
u/fentbiggesthater

ive been waiting for an hour, what happens?
u/SockTaters

u/fentbiggesthater it draws a barcode starting in the top left corner. Should be visible after a few seconds
u/SockTaters

Also I meant to say that I didn't see *this method* for making a barcode before, not that I'm the first to make a barcode. I could've worded that better 😅

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vchoulga

function u(t) {

c.width|=0;for(i=400;i--;)x.fillStyle=`hsl(${i+t*60},100%,50%)`,x.fillRect(960+Math.sin(t+i/5)*i*2,540+Math.cos(t+i/5)*i*2,10,10)

Nov 11 2024 10:04 PM UTC

}// 131/140

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