Dweets awesomed by u/Feiro

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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richev

function u(t) {

x.lineCap='round'
x.lineWidth=20*t
x.beginPath()
c=6.28*t-1.5
x.strokeStyle=`hsl(${t*72},99%,60%)`
x.arc(960,540,270,c,c+.2)
x.stroke()

Aug 5 2018 6:54 AM UTC

}// 135/140

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Expanding rainbow loop

u/lionleaf

Very satisfying to watch #rainbow #donut

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yonatan

remix of d/9104 by u/yonatan

function u(t) {

eval(unescape(escape`景爨挮睩摴栽ⴱⱴ⬽ㅥ㜬椽㌳㭁㵓⡩ⴭ⤻⥦潲⡪㵩㭘㵓⡪ⴭ⤻砮獴牯步⡮敷⁐慴栲䐨❍✫倩⤩倽孁ⱂ㵃⡩⤬堬夽䌨権崮浡瀨砽㹸⩴⨳㌦㈵㔩ⱸ⹬楮敗楤瑨㴨⡐嬰崭偛㉝⤪⨲⬨偛ㅝⵐ嬳崩⨪㈩⨪⴮㘪㘠`.replace(/u(..)/g,"$1%")))

Aug 4 2018 10:47 PM UTC

}// 135/140

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particles.js clone in 135 chars, thanks to d/9094 by u/MrM@_S

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u/yonatan

uncompressed version: for(c.width=-1,t+=1e7,i=33;A=S(i--);)for(j=i;X=S(j--);x.stroke(new Path2D('M'+P)))P=[A,B=C(i),X,Y=C(j)].map(x=>x*t*33&255),x.lineWidth=((P[0]-P[2])**2+(P[1]-P[3])**2)**-.6*6
u/katkip

Wow that's nice.
u/joeytwiddle

Impressive!
u/Lazy1337

#compressed
u/Lazy1337

#particles
u/joeytwiddle

#graph #network #web

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yonatan

remix of d/7241 by u/yonatan

function u(t) {

for(i=j=c.width=99;i--;)for(X=i-50,Y=40;Y++<j;)h=S(t)+S(X/Y*9)*S(X/9+Y/5-t*9)**3,x.fillStyle=R(j+h*j,Y*h,i*h),x.fillRect(i,(Y-h*22)*Y/j,1,j)

Aug 4 2018 7:42 PM UTC

}// 140/140

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Agnes

remix of d/9088 by u/firegodjr

function u(t) {

F=n=>C(n)^T(n/t|0);x.drawImage(c,0,l=9);for(j=214;j--;)x.fillStyle='#'+F(j+t*60^-t*60+j).toString(16).padStart(3,'0'),x.fillRect(j*l,0,l,l)

Aug 4 2018 10:24 AM UTC

}// 139/140

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Fractal Metropolis 1972

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u/katkip

Wow
u/joeytwiddle

Looks so cool and cyber, then come silly green smiley faces
u/katkip

That actually looks like a GOL
u/iverjo

Wow! Interestingly, this is the result of a long remix chain
u/fujimotos

The loop starts here: d/8940
u/donbright

i want a sweater like this
u/tomxor

I love this one!

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conorpo

remix of d/8944 by u/fujimotos

function u(t) {

c.width|=0
for(i=9;i--;)for(j=20;j--;)n=j+i*5+t*S(t)-28,x.fillStyle=`hsl(${i*99},100%,${n*8}%`,x.fillRect(400+i*100,30+j*30+3**n,100,100)

Jul 29 2018 12:41 AM UTC

}// 137/140

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Agnes

remix of d/8945 by u/firegodjr

function u(t) {

F=n=>{return C(n)*C(n)+S(n)*S(n)<1}
x.drawImage(c,0,l=10)
for(j=214;j--;)x.fillStyle=F(j^t*60)?"#0f0":"#000",x.fillRect(j*l,0,l,l)

Jul 28 2018 8:15 PM UTC

}// 130/140

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Visualising numbers for which sin(x)*sin(x) + cos(x)*cos(x) < 1.

u/donbright

wait wait wait wait wait.... sin^2 + cos^2 = 1. im so confused. is this about the imprecision of floating point arithmetic?
u/donbright

this is absolutely fascinating... set it ==1 or >1 gives different patterns.
u/donbright

also fun... return S(n)/C(n)==T(n)

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firegodjr

remix of d/8942 by u/firegodjr

function u(t) {

F=n=>{for(i=2;i<n;)n=n%i++==0?0:n;return n>1}
x.drawImage(c,0,l=10)
for(j=214;j--;)x.fillStyle=F(j^t*60)?"#f00":"#000",x.fillRect(j*l,0,l,l)

Jul 27 2018 6:06 PM UTC

}// 140/140

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Further optimized the is_prime (F) function. How far can you scroll before timeout? :D #prime

u/fujimotos

It's kinda surprising that the distribution of prime numbers has such a noticeable pattern.
u/firegodjr

Well, primes are still technically pseudorandom. They don't form a noticeable pattern, per se. This algorithm would possibly work with any consistent pseudorandom number generator, but this pattern is uniquely made up of prime number interactions.
u/lionleaf

Well, non-prime numbers definitely have a pattern that I would expect helps making this very beatiful. For instance ever other number is not prime (even), every 5 number, every 7 number etc. So lot's of regularities.
u/fujimotos

Yeah. I see Math.random() > 0.5 produces a pettern looking nothing but garbled noise. In comparison, the one generated by prime numbers is a Persian carpet.

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geb

function u(t) {

for(k=0;k<999;k++){a=h=t/8-2;b=i=k/480-9/8
for(n=0;a*a+b*b<4&&n<64;n++)q=a,a=a*a-b*b+h,b=2*q*b+i
x.fillStyle=R(2**n);x.fillRect(t*64,k,k,2)}

Jul 24 2018 11:58 AM UTC

}// 140/140

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u/DataMeta

Niiiiice! #fractal
u/zanella

#mandelbrot
u/zanella

#mandelbrot
u/Xen

Very Nice Style
u/aleamb

#fractal
u/joeytwiddle

Nice #mandelbrot #fractal
u/katkip

Noyce.

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pythech

remix of d/8774 by u/Feiro

function u(t) {

with(x)for(fillRect(0,0,k=2e3,k);k--;beginPath(fillStyle="#0001"))arc(960,540,k/4,v=k%4*2*S(t-k)*C(t-k*9)+t,v+.2),strokeStyle="red",stroke()

Jun 30 2018 10:49 AM UTC

}// 140/140

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u/magna

Stylish! #radar

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colinpt

remix of d/8774 by u/Feiro

function u(t) {

with(x)for(fillRect(0,0,k=2e3,k);k--;beginPath(fillStyle="#1001"))arc(920,540,k/1,v=k%1*9+S(t*9999-k/3)+t,v+.1),strokeStyle="white",stroke()

Jun 30 2018 3:59 AM UTC

}// 140/140

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u/magna

Wow!

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