New #fibonacci dweets

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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lewdev

remix of d/32091 by u/KilledByAPixel

function u(t) {

T=-~T,p=n=>(s=Math.sqrt(n),s*s==n),a=T%3?'':'Fizz',c.before(`${p(5*T*T+4)||p(5*T*T-4)?'Fibonacci':T%5?a||T:a+'Buzz'}, `)

Jul 15 2024 6:22 AM UTC

}// 120/140

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#FizzBuzz #Fibonacci T=-~T is magic

u/lewdev

Sorry, I should have confirmed that my "isFibonacci" check is accurrate. It ain't right.

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Xen

function u(t) {

t?c.before(" "+(x+=y)+" "+(y+=x)):x=y=1

Jul 8 2024 4:30 PM UTC

}// 39/140

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Certain its been done before

u/cantelope

#fibonacci
u/cantelope

equivalent, with "template literals" ;) t?c.before(` ${x+=y} ${y+=x}`):x=y=1
u/lewdev

Nice! c.before( is new to me!

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DaSpider

function u(t) {

t?b=a+(a=b):(a=0n,b=1n)
document.write(a+', ')

Jan 3 2023 1:55 AM UTC

}// 46/140

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#Fibonacci sequence infinity

u/Qwitter

Bigint big infinity bigger
u/4ce

Maybe small #bug in engine Dwitter. if open https://www.dwitter.net/d/26752 => 0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55,... , and if open https://beta.dwitter.net/d/26752 => 1, 1, 2, 3, 5, 8, 13, 21, 34, 55,... (null 0, at first, in main Dwitter.net there and in beta.Dwitter.net not) .This reproduced in diferent browsers ? Yes. comment date 03.01.2023. ~_^
u/384.cz

yeah, 4ce

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CaptainMeat

function u(t) {

f=n=>{return parseInt(((((1+5**(1/2))/2)**n)-(((1-5**(1/2))/2)**n))/5**(1/2))}; throw `Fibonacci ${t&t}: ${f(t&t)}`

May 4 2022 5:56 PM UTC

}// 115/140

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#fibonacci

u/CaptainMeat

gets funky after 100

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tomxor

remix of d/18062 by u/tomxor

function u(t) {

for(a=t?b:[1],b=S,S=[],x.drawImage(c,0,1),p=1920;p--;x.fillStyle=S[p]?R():'tan',x.fillRect(p,0,1,1))
A=a[p],B=b[p],S[p]=A^B^C,C=(A^B)&C|A&B

Mar 25 2020 1:57 PM UTC

}// 139/140

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1920bit #Fibonacci sequence using 1-bit serial adder

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tomxor

remix of d/18061 by u/tomxor

function u(t) {

for(a=t?b:[1],b=S,S=[],x.drawImage(c,0,4),p=480;p--;x.fillStyle=S[p]?R():'tan',x.fillRect(p*4,0,4,4))
A=a[p],B=b[p],S[p]=A^B^C,C=(A^B)&C|A&B

Mar 25 2020 1:55 PM UTC

}// 140/140

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480bit #Fibonacci sequence using 1-bit serial adder

u/tomxor

Familiar!? Just realised that this is equivalent to an elementary cellular automata with a 2 state history.

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BalintCsala

function u(t) {

eval(unescape(escape`景爨挮睩摴桼㵩㴹㭩ⴭ㭸⹴牡湳景牭⡫㴮㘲⩃⡡㵓⡴⤪ㄮ㔷⤬猽⸶㈪匨愩Ⱝ猬欬眬眩⥸⹲散琨ㄬㄬ砮汩湥坩摴栽眽㌰〬眩ⱸ⹱畡摲慴楣䍵牶敔漨⡺㴱㔰⤫匨琩⩺ⱺⵓ⡴⤪稬眬眩㭸⹳瑲潫攨⤻`.replace(/u(..)/g,"$1%")))

Nov 8 2018 7:58 PM UTC

}// 131/140

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Fibonacci spiral

u/katkip

Owwww woottt thats awesome
u/rodrigo.siqueira

SOURCE CODE: for(c.width|=i=9;i--;x.transform(k=.62*C(a=S(t)*1.57),s=.62*S(a),-s,k,w,w))x.rect(1,1,x.lineWidth=w=300,w),x.quadraticCurveTo((z=150)+S(t)*z,z-S(t)*z,w,w);x.stroke();
u/rodrigo.siqueira

Animated Golden Rectangle #Fibonacci Sequence
u/vain

very cool golden ratio / rectangle fx. (never seen before like this, great!)

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katkip

remix of d/8663 by u/firegodjr

function u(t) {

c.width|=0
x.translate(960,540)
for(i=200;i-->0;)x.lineTo(4.8*i,0,0,0,0),x.rotate(S(t/2)/11)
x.fill("evenodd")

Oct 6 2018 1:59 PM UTC

}// 110/140

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u/firegodjr

#fibonacci

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cantelope

remix of d/10234 by u/Purpzie

function u(t) {

for(c.width=-1,з=0,_=[ф=1,п=ф];з++-20;)_.push(п+=_[з-ф]);x.fillText(_,0,9)

Oct 4 2018 4:42 PM UTC

}// 74/140

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u/magna

#fibonacci
u/magna

18 characters longer, avoids loop: x.fillText([c.width=-1,1,2,3,5,8,13,21,34,55,89,144,233,377,610,987,1597,2584,4181,67],-3,9) :D
u/donbright

#oeisA000045

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firegodjr

function u(t) {

F=a=>((p=1.62)**a-(-p)**-a)/2.2
with(x)for(c.width|=D=10,x.m=translate,m(8e2,9);D--;)arc(0,0,F(D+2)*9,0,p),m(0,F(D)*9),rotate(1.57),stroke()

Jun 16 2018 3:33 AM UTC

}// 140/140

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The first #fibonacci spiral to ever grace Dwitter! :D

dwitter.net | #fibonacci