Dweets by u/joeytwiddle

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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joeytwiddle

function u(t) {

t||(Y=0)
onmousemove=e=>{Y=e.pageY*.7}
c.width=568;for(y=320;y--;x.fillRect(0,y,568,1))x.fillStyle=`hsl(${30*((y-Y)/30|0)},99%,50%`

Jul 14 2019 5:01 AM UTC

}// 131/140

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Broken parallax scrolling effect (only works if you wiggle your mouse over the dweet while you scroll the page)

u/joeytwiddle

I tried various things but I couldn't find any way for the iframe to know when it has been scrolled. :-/
u/katkip

It impossible. Iframe's cursor doesn't update if mouse isn't moving inside iframe

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joeytwiddle

remix of d/14824 by u/donbright

function u(t) {

c.width=400
d=(r,T)=>x.fillText(T,200+r*S(a=i/1.91),115-r*C(a))
for(i=N=t|0;i>1;i--)
for(N%i||d(60+i,i),k=50;k--;)N%i||d(k,'*')

Jun 29 2019 4:36 AM UTC

}// 127/140

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Prime factors on a clock #primes #math

Show more comments…
u/joeytwiddle

Shouts to donbright and taupelink!
u/joeytwiddle

35, 55, 77, 95, 115 and 119 all draw a lambda
u/katkip

Wow
u/taupelink

yay
u/DataMeta

Noice!
u/joeytwiddle

Oops this shows all factors, not just prime factors
u/donbright

hee hee sorry my description on the original was slightly misleading
u/donbright

you have golfed it down to where you might actually be able to do something only with prime factors
u/donbright

holy smokes... i just realized something. if you express an integer using this method, there are only 2 to the twelfth possible representations, which is 4096
u/joeytwiddle

Even fewer, since 4, 6, 8, 9, 10, and 12 never appear alone
u/joeytwiddle

They all light up at t=13860, after 3.85 hours #waitforit
u/joeytwiddle

For seconds/minutes use S(a=i/9.55) and d(60+i/4,i)
u/joeytwiddle

To see factors of odd numbers only, and quickly: i=N=t*22|1
u/donbright

cool

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joeytwiddle

function u(t) {

for(i=c=[3,4,50][q=t%3|x.beginPath()];i--;x.fillStyle='#'+'ee33e'.substr(q,3))x.arc(320+640*q,880-250*q,250-c,a=(1+q+4*i)/c*11/7,a);x.fill()

Jun 16 2019 5:48 AM UTC

}// 140/140

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#bauhaus

u/katkip

um ok
u/mbarkinozdemir

Awesome!
u/metamero

<3
u/DataMeta

yes
u/joeytwiddle

Took a while to golf this. Now I see the %3 is not needed!

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joeytwiddle

remix of d/9674 by u/f8f82804

function u(t) {

with(x)for(i=c.width^=0;beginPath(),i--;fill())arc(960+(i*960-i*i)**.5*S(a=t-i),48+i,9*(C(a)*S(i/306))**.3,0,7)

Jun 14 2019 2:15 PM UTC

}// 111/140

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Just a little remix

u/katkip

#d3
u/joeytwiddle

No perspective, but proper flattening: with(x)for(i=c.width^=0;i--;fill())beginPath(),C(a=t-i)>0&&ellipse(960+(i*960-i*i)**.5*S(a),48+i,15*C(a),15*S(i/306),0,0,7)
u/joeytwiddle

Spirals: with(x)for(i=c.width^=0;i--;fill())beginPath(),C(a=(t|0)*i-C(t))>0&&ellipse(960+(i*960-i*i)**.5*S(a),48+i,15*C(a),15*S(i/306),0,0,7)

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joeytwiddle

remix of d/14155 by u/pavel

function u(t) {

eval(unescape(escape`睩瑨⡸⥦潲⡥㵮㴾渦㠿㠭渥㠺渥㠬挮睩摴栽椽㈱㜶㭪㵩ⴭ㸾㜬椾ㄲ㜻慲挨㘰〫攨樫㌩⨱㌰ⰲ㘰⭥⡪ⴱ⤪㤰⭬⨳⵩⼱ㄮ㌬㤹⵩┲⨴〬愽椥㐯⸶㐬愩⥬㵩┱㈸Ⱨ汯扡汁汰桡㴱⵬⨪⸲⼲⸶㌬椥㑼籢敧楮偡瑨⡦楬氨⤩`.replace(/u(..)/g,"$1%")))

May 28 2019 4:28 PM UTC

}// 139/140

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Pavel's columns -> Escher's stairs

u/joeytwiddle

I don't know why two of the sides are flat ¯\_(ツ)_/¯
u/joeytwiddle

Wait this code has an arc in it? o_O
u/katkip

nice
u/joeytwiddle

globalAlpha=.5-l**.2/5.26 for a softer aesthetic
u/donbright

wonderful

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joeytwiddle

remix of d/13538 by u/vinca

function u(t) {

h=(x,y)=>2e4/(x**2+y**2),p=18;for(i=7e3;i--;x.fillRect(p*X,p*Y,p,p))Y=i%64,x.fillStyle=R(p*h(X=i>>6,1+Y)+(b=h(p*C(7*t)+p-X,p*T(5*t)-Y)),0,b)

May 1 2019 4:31 PM UTC

}// 140/140

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vinca's metaballs, compressed

u/joeytwiddle

Took liberties with the sqrt. (Dropped it!)
u/vinca

oh. nice shorter code!
u/donbright

nice

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joeytwiddle

remix of d/3239 by u/joeytwiddle

function u(t) {

r=()=>Math.random()*2520;for(i=99;i--;)x.fillStyle=`hsla(${r()},99%,63%,.01`,x.beginPath(),x.arc(r()-99,r()/2-99,r()**3/4e7,0,7),x.fill()

Apr 19 2019 9:35 AM UTC

}// 137/140

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#plasma #cloud remix for 2019

u/KilledByAPixel

nice
u/DataMeta

Neato
u/joeytwiddle

63% works well on Firefox, 67% works well on Chrome

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joeytwiddle

remix of d/12994 by u/KilledByAPixel

function u(t) {

x.textAlign='center';for(X=W=300;X--;)x.font=W*(1+S(X+t))+"px'",x.fillStyle=R(99*(1+S(X*X+t*(X%5))),0,0,1),x.fillText("♥",X%16*150,99*X/16)

Apr 6 2019 8:17 AM UTC

}// 139/140

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Love comes and goes 💕

u/joeytwiddle

#heavy Performs ok in Firefox if you wait for font sizes to cache
u/KilledByAPixel

awesome, much better then the original!

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joeytwiddle

function u(t) {

with(x){
	t||scale(20,20)
	fillStyle='#c00'
	fillRect(0,0,99,60)
	fillStyle='#fd0'
	fillText('↹',9,17)
	fillText('tabs will win',34,46)
}

Mar 18 2019 8:49 AM UTC

}// 137/140

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u/13thptr

Oh yeah they will :D tabs FTW
u/joeytwiddle

#dweetsforlostcauses

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joeytwiddle

remix of d/577 by u/iverjo

function u(t) {

for(c.width|=i=99;i--;x.lineTo(1e3+r*S(p)**3,500-r/16*(13*C(p)-5*C(2*p)-2*C(3*p)-C(4*p)),15,15))p=i/16,r=400+99*S(3*t-p/9)**26,x.fill()

Feb 14 2019 1:35 PM UTC

}// 135/140

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u/katkip

Haha! From The Coding Train live
u/iverjo

#heart
u/Galaxtone

Nice job!
u/lionleaf

#valentines

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