Dweets awesomed by u/marc8

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: #ScaryMovies

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mildlybean

function u(t) {

Z=(X,Y)=>S(X*Y/999+t*9)*9
c.width|=0;for(i=-64;++i<64;)for(j=-64;++j<64;x.fillRect(960+i*d,540-.7*(j+h)*d,3,3))d=3e3/(400+.7*(j-(h=Z(i,j))))

Aug 26 2019 1:51 PM UTC

}// 140/140

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It will graph any equation you put on the first line. Give it a try, I'd love to see your remixes!

Show more comments…
u/mildlybean

S((X*X+Y*Y)**.5/4-t*16)*16 is interesting
u/tomxor

Neat! #application , shameless plug to my old retro version: d/12669
u/tomxor

yours has a much nicer resolution: Z=(X,Y)=>S((X*X^Y*Y)**.1-t*8)*16
u/katkip

Z=(X,Y)=>S(X/9*C(t)+Y/9*S(t))*9 is cute
u/tomxor

moire: Z=(X,Y)=>t
u/katkip

Any formula has a moire actually
u/mildlybean

Especially (X+Y)%2==0?0:S(t*2)*50

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veubeke

function u(t) {

c.width^=0
x.font='90px"'
for(i=11;i--;x.fillText(X<5?'🐄':'🥩',X*192,800))X=(i+t)%11-1
for(i=11;i--;)x.fillRect(i*192,i-5?800:600,192,1080)

Jul 24 2019 10:42 AM UTC

}// 138/140

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u/katkip

#genius
u/aleamb

lol
u/Xen

love it
u/young

this is amazing
u/Odog8

PETA in a nutshell
u/HellMood

xD

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marc8

function u(t) {

c.width=w=1920
p=t?p:Array(w).fill(0)
with(Math)for(m=min(...p),i=w;i;)p[random()*w|0]++,x.lineTo(i,(p[i--]-m)/(max(...p)-m)*1e3)
x.stroke()

Jul 1 2019 8:54 PM UTC

}// 140/140

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This is your PRNG distribution (let it run)

u/donbright

neat
u/joeytwiddle

#random

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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

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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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taupelink

function u(t) {

c.width|=0;f=X=>{for(i=2;i*i<=X;i++)if(X%i==0)return i+'*'+f(X/i);return X};k=frame/6|0;x.font='5em"';x.fillText(k+'='+f(k),0,540)

Jun 28 2019 1:01 AM UTC

}// 130/140

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factorization into #prime products. #math

u/taupelink

simple #recursion #recursive
u/Xen

very clever
u/katkip

wow
u/donbright

#numbertheory

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KilledByAPixel

remix of d/14763 by u/KilledByAPixel

function u(t) {

c.width|=0
with(x)for(j=50;j--;)for(beginPath(i=99);i--||stroke();)arc(j%10*192+96,50+96+(j/10|0)*192,96,q=i*.0641,(q*j+t)%(Math.PI*2))

Jun 25 2019 9:46 PM UTC

}// 135/140

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Iris Variations

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u/loktar

Awesome!
u/Xen

LOVE IT!
u/donbright

ok thats it. Internet is now complete. no need for anything else
u/magna

#multidweet
u/KilledByAPixel

Mathologer video about this: https://www.youtube.com/watch?v=qhbuKbxJsk8
u/KilledByAPixel

https://www.fxhash.xyz/generative/2216 #fxhash

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marc8

function u(t) {

c.width=e=1920
t%=10
x.font='99px courier'
r=(a,b,z)=>`${z}`.repeat(e).slice(a,b)
x.fillText(r(f=t*e,f+12,u)+r(27,27+t,x)+r(f,f+21,c),0,600)

Jun 25 2019 9:06 PM UTC

}// 140/140

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Finding password as it happens in the movies

u/katkip

#text cool

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KilledByAPixel

function u(t) {

with(x)beginPath(save(restore(font="9em'"))),translate(960,540),rotate(-t),moveTo(0,0),clip(arc(0,0,3e3,1.56,1.58)),fillText(u,-t*12*t,t*20)

Jun 24 2019 7:42 PM UTC

}// 140/140

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Spiral #quine #slowdraw

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u/Xen

very clever!
u/jylikangas

And creative!
u/katkip

#genius
u/KilledByAPixel

Thank you, this one came to me in a dream.
u/katkip

#slowrender
u/iverjo

#waitforit
u/KilledByAPixel

Full explanation on my blog: http://frankforce.com/?p=6232
u/magna

This is great!

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KilledByAPixel

function u(t) {

c.width=1e3
z=500
for(i=501;i--;x.lineTo(z+k*50*S(t/2)+S(p=(i/2|0)*Math.PI*4/z-t*k/9)*250,281+C(p)*250))k=(i%2?-5:5)
x.fill('evenodd')

May 31 2019 11:10 PM UTC

}// 134/140

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Stuck Circles

u/Xen

woot, love it
u/katkip

#moire

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marc8

remix of d/14032 by u/marc8

function u(t) {

with(Math){a=-t;b=t;f=X=>1/cosh(X)
w=c.width|=p=i=0
s=w/frame
for(k=(b-a)/w;p<w;)x.fillRect(p+=s,q=w/4,s,-q*(y=f(a+k*p)),i+=k*s*y)
throw(i)}

May 21 2019 7:18 AM UTC

}// 140/140

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Infinity integration limits: use ±t for ±∞. Convergence not guaranteed.

u/13thptr

great
u/13thptr

#math

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