New #scanline 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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Current theme challenge: #Opposites

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magna

remix of d/32471 by u/rodrigo.siqueira

function u(t) {

for(i=2e3;i--;d>91e3&Math.random()>.002&&x.fillRect(i,Y,1,1))Y=frame,d=(i-960)**2+(Y-540)**2

Sep 20 2024 2:31 AM UTC

}// 92/140

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Full moon scanline #moon #scanline

u/rodrigo.siqueira

Great! Suggestion for future code: Y=t*60 is 1 character shorter than Y=frame and it also prevents the "while line" on top because frame starts with "1" and t*60 starts with "0"
u/magna

Sweet! Noted.

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rodrigo.siqueira

remix of d/19826 by u/rodrigo.siqueira

function u(t) {

for(i=2e3,f=(X,Y,n=6)=>Y?f(X*X-Y*Y,2*X*Y-.7,n+2):x.fillStyle=`hsl(${n*8},88%,${S(n)*n}%`;i--;x.fillRect(t*99,i,2e3,1))f(i/365-1.5,t/6-1.6)

Sep 3 2020 3:14 PM UTC

}// 138/140

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Full Julia Set #fractal #julia #spiral

u/katkip

#scanline

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katkip

function u(t) {

z=(a,b)=>C(a*a+b)<0?S(a*b/5):z(1.5*b-a,.4-a);t||(w=0);for(v=9;v--;++w)for(i=1080;i--;)x.fillStyle=R(z(i/990,w/999)*500),x.fillRect(w,i,1,1)

Dec 29 2019 3:49 PM UTC

}// 139/140

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I would like to understand how this works. I made just a random recursive formula and the result is too beautiful! #recursion is awesome

u/katkip

#slow #scanline #fractal
u/poetaster

a rose by any other name is still a rose by any other name is

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katkip

function u(t) {

z=(a,b)=>C(a)<0?S(a*a-b*b/a):z(b*1.4,1-a);t||(w=0);for(v=9;v--;++w)for(i=1080;i--;)x.fillStyle=R(0,0,z(i/990,w/999)*500),x.fillRect(w,i,1,1)

Dec 28 2019 2:55 PM UTC

}// 140/140

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#fractal

u/katkip

#scanline #slowrender

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katkip

function u(t) {

z=(a,b)=>C(b*2)<S(a+b)?z(a+b*2,a-b*2):S(b*b+a)<C(a*a-b);t||(w=0);for(v=9;v--;w++){for(i=1080;i--;)if(z(i/190,w/400))x.fillRect(w,i,1,1)}

Dec 28 2019 2:33 PM UTC

}// 136/140

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#scanline #slowrender

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katkip

function u(t) {

f=frame;for(i=-108;i++<108;)x.fillStyle=`hsl(${(C(f/19)*f/2%i+C(i*f)*9)*3} 99%50%)`,x.fillRect(f*5,i*5+540,5,5)

Apr 23 2019 10:51 AM UTC

}// 111/140

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#scanline

u/Xen

nice

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andrea270872

function u(t) {

I=t*3320%2e3;J=t*94%1e3
i=A=I/2e3;B=J/1e3
for(;i++<13;[A,B]=[A*A-B*B+.3,2*A*B],C=A*A+B*B)
x.fillStyle=R(C*200,0,0,.3)
x.fillRect(I,J,i*=4,i)

Mar 7 2019 8:26 PM UTC

}// 140/140

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Ghost of Julia ver5 (in red)

u/f8f82804

#fractal
u/13thptr

weird rendering:I love it :)
u/andrea270872

thanks... I had to cut a lot of corners to even get something looking like that :D
u/13thptr

#scanline
u/Xen

love it!

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tomxor

function u(t) {

eval(unescape(escape`眽㤰Ⱪ㵬㵷⩷⼵ⱴ㴱⭴⩴⼱㈻景爨砮晩汬剥捴⠰ⰰⱣ⹷楤瑨㵷⨲ⱷ⨲⤻椭ⴻ砮晩汬剥捴⡘⨶ⱙ⨶ⰱ⭋ⰵ⤩堽椥眯㌬夽椯眬䘽琭椯氬䬽ㄭ䘥ㄬ䬪㴨奞堭繆⤯㈷┱⭋⨪㠬砮晩汬却祬攽恨獬⠤筩⨱㈰紬㤹┬⑻䬪㤹紥⥠`.replace(/u(..)/g,"$1%")))

Feb 14 2019 12:46 AM UTC

}// 140/140

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Trinitron #crt #scanline #fractal

u/tomxor

Finally resorted to UTF8. This is a reasonably accurate slow motion aperture grille scanline animation... Although if run very slow you will see it's not simulating 3 electron beams. t=fps (scanline) w=width (subpixels) the later must be a multiple of 3 and 5. Use X, Y and floored F to plugin your own fractal!
u/tomxor

Uncompressed: w=90,i=l=w*w/5,t=1+t*t/12; for(x.fillRect(0,0,c.width=w*2,w*2);i--;x.fillRect(X*6,Y*6,1+K,5)) X=i%w/3,Y=i/w|0,F=t-i/l,K=1-F%1,K*=(Y^X-~F)/27%1+K**8, x.fillStyle=hsl(${i*120},99%,${K*99}%)
u/sigveseb

Kick-ass!
u/C010011012

bypassing the character limit I see using unicode escapements and regex u r very clever

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rbong

function u(t) {

for(X=960;X--;x.fillStyle=`hsl(${(t+k)*25},99%,50%)`,x.fillRect(X*2,t%9*120,2,2))for(r=i=0,k=45;--k/r;i=j)j=2*r*i+1-t%9/54,r=r*r-i*i-X/4800

Oct 28 2018 8:38 PM UTC

}// 139/140

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Scanline Rainbow Mandelbrot Section

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u/rbong

I've spent quite a bit of time now trying to get a faster, more detailed mandelbrot set or other interesting fractal that hasn't been done in fewer characters. This has included exploring obscure fractals like those generated from polynomial roots, using image data as storage or other memoization, and the dweet earlier that used WebAssembly with a new compression technique. I'll keep exploring these ideas, but this experiment bore the quickest result. #fractal #mandelbrot #scanline #rainbow
u/rbong

Oh yeah, I also tried MAndelbrot perturbation. It's pretty expensive for these purposes but I might be able to do something similar.
u/Xen

Love it!
u/tomxor

I'd love to see more fractals, especially more esoteric ones, keep up the good work rbong.
u/katkip

Great job bro!! I love this one!
u/lionleaf

Amazing!
u/iverjo

#slow_render

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katkip

remix of d/894 by u/iverjo

function u(t) {

i=frame;for(j=1080;j--;){a=b=0;for(k=35;k--&&a*a-b*b<4;)c=a*a-b*b+i/540-2,b=2*a*b+j/540-1,a=c;x.fillStyle=R(0,k);x.fillRect(i*2,j,C(k)*2,5)}

Sep 27 2018 2:24 PM UTC

}// 140/140

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Mandeldistort #mandelbrot #slow_render #scanline #fractal

u/katkip

#waitforit it actually gets better than I expected
u/joeytwiddle

Nice fresh style

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