Dweets awesomed by u/pavel

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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rodrigo.siqueira

remix of d/25303 by u/pavel

function u(t) {

f=(x,y,n=0)=>x/y/X<99?f(x*x-y*y-.8,2*x*T(y)+.2,n+1):C(n/4)/2-.4
for(i=5e4;i--;x.fillRect(X=u&2047,u>>11,f(X/4000+.28,u/8e6-.24),1))u=-~u

Apr 12 2022 2:26 PM UTC

}// 136/140

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Two interlaced spirals #fractal

u/vain

very nice. looks a bit like #bumpmap

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pavel

function u(t) {

for(i=c.width|=0;i--;x[i&1?'moveTo':'arc'](960+8*r*C(a=i*.0997),540+8*r*S(a),r+r/(1.2+999**S(i/180+a-2*t)),0,7))r=1.0028**i
x.fill`evenodd`

Apr 8 2022 11:33 PM UTC

}// 139/140

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Kaleidoscopic Spiral

u/pavel

Remix of https://twitter.com/beesandbombs/status/1386…
u/pavel

#beesandbombs
u/pavel

I like this trick of re-using the same args for moveTo and arc back to back. The first two args are x and y for both and moveTo ignores extra args.
u/magna

YES!
u/vain

very cool and beautiful fx.

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pavel

function u(t) {

f=(x,y,n=0)=>x<2?f(x*x-y*y,2*T(2*x*y)-.5,n+1):C(n/4)/2-.5
for(i=5e4;i--;x.fillRect(X=u&2047,u>>11,f(X/960-1,u/2e6-.56),1))u=-~u

Apr 7 2022 11:41 PM UTC

}// 127/140

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https://twitter.com/ntsutae/status/151218131…

Show more comments…
u/pavel

Cool function from u/ntsutae, but mostly tinkering with the rendering logic so its quick and short. Takes about a second.
u/pavel

Renders f on -1<=x<=1 and -9/16<=y<=9/16
u/pavel

Expects 0<=f(x,y)<=1 in that range
u/pavel

...or alternatively -1<=f(x,y)<=0 in that range too as my code is doing...
u/pavel

i can be initialized to whatever you want, it is a pure speed vs lag tradeoff
u/taupelink

wow!
u/ntsutae

👍👍
u/danny@hille.dk

NICE! - Interestingly this code f=(X,Y,n=98)=>Y*Y>n?n:f(4*X*Y-.5,Y*Y-X*X,n+1.2) from d/19821 produces an image with many similarities with this.
u/danny@hille.dk

DANG this is speedy! - you can crank out some fractals in no time :-) f=(X,Y,n=1)=>X*X>n?n:f(4*X*Y-.5,Y*Y-X*X,n+1.2) for(i=5e4;t<1&&i--;x.fillRect(X=u&2047,u>>11,19/f(X/960-1,u/2e6-.56),1))u=-~u

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KilledByAPixel

remix of d/25158 by u/KilledByAPixel

function u(t) {

for(w=c.width&=i=10368;i--;x.fillRect(i%w,Y=i/w|0,1,u[i]=!!(X/35-3|Y/7-5|X&4?t&2**(u[i+w]+2*u[i-w]+4*u[i+1]+8*u[i-1]):1)))X=i%w+S(t)*25+44

Apr 2 2022 9:37 PM UTC

}// 138/140

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Defautomaton #default #automata

u/magna

AWESOME!
u/magna

#glitch as well
u/vain

very cool #glitches
u/tomxor

Very good combo idea

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pavel

function u(t) {

for(i=c.width|=h=1.5708;y=i--%3-1||S(i);x.fillRect(960+16*S(a+=i*h+t/3)/p,540-9*C(a)/p+13*r*y,4,4))r=9+9/(1+i**S(i*i+t)),p=S(a=i%3*i%h+.8)/r

Mar 30 2022 10:47 PM UTC

}// 140/140

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Hypercube #beesandbombs

u/vain

very cool. like the morphing / moving dots / lines #cube #3d
u/tomxor

Very neat. The migration of the points gives it quite an etherial look.
u/aleamb

amazing!

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rodrigo.siqueira

remix of d/25259 by u/vain

function u(t) {

for(X=2e3;X--;x.fillRect(X,t*60+a,1,1)){i=a=X/2800-.08,b=t/50-.9
do{d=a*a-b*b-.61,b=2*a*b+.51,a=d,i++}while(1/a<9)x.fillStyle=R(200-i*9)}

Mar 30 2022 8:55 PM UTC

}// 137/140

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Bloody spirals #spiral #fractal

u/andrea270872

wow. this one looks like an ancient scroll from Japan or something like that!
u/pavel

That's awesome. Really like the shading.

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danny@hille.dk

remix of d/25208 by u/ntsutae

function u(t) {

w=c.width=128
f=n=>S(n)**2*w
for(i=1e4;i--;x.fillRect(T=i%w+1,C=i/w|0,f(a-t*4)/w,1))for(j=a=34;j--;)a+=S(4*Math.atan2(C-j-20,T-f(j)))

Mar 28 2022 7:11 PM UTC

}// 133/140

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Golf and play

u/ntsutae

Thank you for your remix. I think I've learned a lot
u/danny@hille.dk

Cool, I'm glad you liked it :-)

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New_Core

function u(t) {

e=-.8
m=.153
for(X=2e3;X--;){a=X/600-1.6,b=t*.1-1,i=0
do{d=a*a-b*b+e,b=2*a*b+m,a=d,i++}
while(i<255&&(a*a+b*b<4))
x.fillRect(X,t*60,1/i,i)
}

Mar 28 2022 4:08 PM UTC

}// 140/140

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in the "while".. set the number 4 to 1 to see the footprint of a julia... =)

Show more comments…
u/New_Core

the org julia code wasnt done by me, I just shorten and messed it up a bit ;)
u/andrea270872

Love the smudge effect!
u/magna

Looks like embroidery!
u/magna

#3d
u/Xen

wild!
u/danny@hille.dk

Cool!
u/vain

beyond incredible! I really love the way, how the image is drawn!
u/sigveseb

The smudge effect!
u/joeytwiddle

#julia #fractal with sort of #d3 #lighting
u/SophiaCristina

<3 <3 <3

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taupelink

remix of d/25159 by u/taupelink

function u(t) {

for(m=t?0:5e4;m--;x.fillRect(960*++X,720+q*Y,q,-2*i))X=S(m%5*m+m),Y=S(g=X+m*m),x.fillStyle=R(i=m%250,q=i-(C(g-m)+X/4)**2*i,q/4**Y,m/1e6/Y/Y)

Mar 28 2022 1:54 AM UTC

}// 140/140

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d/25213

u/joeytwiddle

#watercolor

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ntsutae

remix of d/25207 by u/ntsutae

function u(t) {

f=n=>S(n)**2*256
for(X=1920,t*=60;X--;x.fillStyle=R(c=f(a),c,c),x.fillRect(X,t,1,1))for(j=a=54;j--;)a+=S(4*Math.atan2(t-j*20,X-f(j)*8))

Mar 27 2022 8:44 PM UTC

}// 135/140

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u/rep_movsd

Beautiful

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