Dweets awesomed by u/4ce

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.

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Current theme challenge: #ScaryMovies

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KilledByAPixel

function u(t) {

for(k=0;k<450;x.fillRect(k&&540+j*99+i,k&&400,k?1:2e3,k++?200:2e3))j=k/50|0,i=k%50,x.fillStyle=R(v=128+S(k&&t*8-(1-C(i/16)**9)*C(t))*64,v,v)

Jan 24 2024 6:11 PM UTC

}// 140/140

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Default Motion Illusion

Show more comments…
u/384.cz

Wow!
u/taupelink

excellent #default
u/KilledByAPixel

Want to see something crazy, change C(t) to C(t+j)
u/Xen

sickk bro!
u/joeytwiddle

Very cool. I wonder if a similar effect can be achieved by manipulating the background colours, rather than the bars themselves.
u/Aeholbrook

awesome!

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taupelink

remix of d/29262 by u/taupelink

function u(t) {

for(i=256;i--;x.fillRect(475+(i&15)*60,55+(i>>4)*60,70,t?0:70))x.fillStyle=R(32+i%19*9,32+5*i%11*12,32+3*i%7*25,((i**3%83/2+45)/90)**3)

Jan 22 2024 2:59 AM UTC

}// 135/140

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d/29361

u/taupelink

Prompt: 16×16. #genuary #genuary2024 #genuary23
u/joeytwiddle

I love the multitude of muted #colors

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384.cz

function u(t) {

I=new ImageData(f=c.width=256,144)
for(i=2e5;i--;)I.data[i]=i%4==3?f:(i/f+f&i|f*S(i/f/f|t*9)*i%f/9)%f/(t%1); 
x.putImageData(I,0,0)

Jan 13 2024 11:08 AM UTC

}// 131/140

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𝗚̵̟̗̣̗̟̄̕͝𝗹̢̣̮̗̠̊͒̈́̈𝗶̠͙ͫ̓̅ͮ̿͠͠𝗧̪̖̗̰͇̂̊̊̂𝗰͉̙̙̞̦̪̍͋̂𝗵̩̩͖ͭ̃͐͛͘͡𝗲̱̱̻̼̇̂̾̉̕𝗱̧̛̱̯̭̇̂̇ͫ

u/magna

Love it! #glitch

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KilledByAPixel

function u(t) {

x.textAlign='center'
x.fillText([...code.replace(/\W/g,'').slice(i,i+=++w)].join` `.toUpperCase(x.font=3/w+'in"'),960,o+=340/w)}{i=w=0,o=-70

Dec 30 2023 7:13 PM UTC

}// 140/140

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Eye Chart 👁️ #quine

u/Xen

love it!

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384.cz

function u(t) {

throw 052

Dec 19 2023 6:15 PM UTC

}// 9/140

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How?!

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u/danny@hille.dk

prefixing any number with 0, and javascript interpret it as octodecimal (base 8) jist like prefixing with 0x nd javascript interpret it as hexadecimal (base 16)
u/Odog8

100% worst js feature
u/danny@hille.dk

It's a C language feature that bleed in Java, and from Java into javascript
u/Odog8

ah, didnt know that, neat. Still frustrating imo
u/New_Core

there is 0o for octal.. if use just 0 and accidently have a 8 or 9, it becomes a normal decimal while 0o will throw an error. as said before, you have 0b = binary 0o = octal 0x = hexa
u/rodrigo.siqueira

oh no, 078 throws "78" and 077 throws "63".
u/neimad

077/078 is not a really a gotcha. It seems to follow Javascript's patterns for type coercion. Some numbers can evaluate as octal numbers, and some can't. If a string starts with 0 and contains only numbers 0 through 7, then it is evaluated as octal. If the string starts with 0 and has any number above 7 (not octal), then it evaluates as decimal. It's not a mystery, it actually makes some sense even if octal in Javascript is not normally used.
u/tomxor

On the rare occasion when you need to set file permissions from JS you will finally appreciate it :D

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rodrigo.siqueira

remix of d/29159 by u/joeytwiddle

function u(t) {

x.fillRect(0,0,2e3,2e3)
for(i=1e4;i--;x.clearRect(960+Y*S(a+t/50)/2,220+Y+Y*T(a*a)/12,W,W))Y=9*i**.6,a=i+2*S(t/1e7),W=9*S(a*C(i*i+t/i))*C(a)

Dec 18 2023 8:13 PM UTC

}// 140/140

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#christmas #snow #tree

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rodrigo.siqueira

remix of d/29109 by u/baon

function u(t) {

x.fillRect(0,0,w=5e3,w)
for(i=w;i--;x.fillRect(t%9*320-i/7+S(k)*r*S(t),540+99*S(t)+C(k)*r,9,5))k=t/3+i*i,r=i*S(i/w-4)/5,x.fillStyle=R(i%300)

Dec 13 2023 12:18 PM UTC

}// 140/140

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3D Volumetric Fish #fish

u/danny@hille.dk

Are you sure it's a Fish?😶- Love it!
u/Xen

love it!
u/lewdev

I'm always amazed by #3D effects.

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taupelink

remix of d/28997 by u/taupelink

function u(t) {

for(i=150;i-->450*t;x.fill(x.stroke()))x.beginPath(x.fillStyle=['#3EB','#FC4','#C9F'][i%3]+(i%3%2+1)),x.arc(i%43%9*240,i%5*240,i*t**t,i,i+4)

Dec 3 2023 3:15 AM UTC

}// 140/140

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d/29019

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Xen

remix of d/28832 by u/timothytomato

function u(t) {

c.style.filter="blur(5vh)contrast(9"
for(i=3e2;i--;x.fillStyle=`hsl(${i*t*9} 50%50%)`)x.fillRect(1e3+C(i*t/7.7)*i*5,555+S(i*t/3.3)*i*3,19,9)

Nov 9 2023 8:14 PM UTC

}// 140/140

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Woosh

u/cantelope

neat

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KilledByAPixel

function u(t) {

eval(unescape(escape`󩭲󨝭󩜥󝬰󯍼󥌿󭌿󠬮󪝮󫭥󬭈󥍍󣌽󥌿󙽓󥍁󤭔󙼺󙽓󥍏󤌧󞭣󛭯󭝴󩝲󢍔󣝌󟜧󧍵󜬳󡬰󟍩󫭰󭝴󘍩󩌽󢜠󭭡󫍵󩜽󜜸󜌾󟍢󬬾󟍢󭝴󭍯󫬠󪝤󟝂󘍯󫭣󫍩󨽫󟝔󟜡󥌾󙼺󢜮󭭡󫍵󩜾󜌿󢜮󭭡󫍵󩜭󛜺󬽰󩝥󨽨󤽹󫭴󪍥󬽩󬼮󬽰󩝡󪼨󫭥󭼠󤽰󩝥󨽨󤽹󫭴󪍥󬽩󬽕󭍴󩝲󨝮󨽥󚌧󥌧󚜩`.replace(/u../g,'')))

Oct 23 2023 8:06 PM UTC

}// 139/140

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Tea Timer ☕

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