Top #recursive 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

} // 112/140

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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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katkip

function u(t) {

c.width^=0;f=(X,Y,s)=>{if(s>10)x.lineTo(X,Y),f(X+S(t+s)*s/5,Y+C(t+s)*s/5,s/(1.01+t/250))}
x.lineWidth=5;f(960,540,500),x.stroke()

Feb 8, 2019 5:04 PM

}// 129/140

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#organic things that does this #recursive

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katkip

remix of d/12162 by u/katkip

function u(t) {

c.width*=1;f=(X,Y,S)=>{if(S>.3)x.fillRect(X,Y,S-2,70),f(X+S/2,Y-70+C(X/8-t)*20,S/2),f(X,Y-70+C(X/9+t)*20,S/2)}
f(50,960,1760)

Feb 5, 2019 8:23 AM

}// 125/140

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Extremely smooth pistons spike-wave #recursion #recursive

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katkip

function u(t) {

c.width*=1;f=(X,Y,s)=>{if(s>20)for(i=0;i<9;i++)x.fillRect(X+i*s*2+S(t)*s*6,Y,s,s*4),f(X+s,Y+s,s/1.3)};f(300,300,100)

Jan 17, 2019 1:49 PM

}// 116/140

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#d3 #recursive #recursion #default #perspective

u/metamero

nice idea. this can go better

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joeytwiddle

function u(t) {

c.width|=p=(X,Y,W,I,H=W/2)=>H>2?(p(X,Y,H,I*=Math.random()**.2),p(X+H,Y,H,I),p(X,Y+H,H,I),p(X+H,Y+H,H,I)):x.fillRect(X,Y,I,I),p(0,0,R=1024,9)

Jan 9, 2019 3:15 PM

}// 140/140

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a sort of rough #recursive #plasma #fractal

u/joeytwiddle

Ideally we would keep the edges smooth, by holding an intensity for each corner instead of the entire square
u/joeytwiddle

W=width, H=half width, I=intensity, p=plot/plasma/partition
u/joeytwiddle

p calls p four times for each sub-square, with a randomly smaller I

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katkip

function u(t) {

eval(unescape(escape`挮睩摴桞㴰㭲㴨堬夬猩㴾筩昨猾㈩砮晩汬剥捴⡘ⱙⱳ⨲ⱳ⨲⤬爨堭猬夭猬猯㈩Ⱳ⡘⵳ⱙ⭳ⱳ⼲⤬爨堫猬夭猬猯㈩Ⱳ⡘⭳ⱙ⭳ⱳ⼲⥽㭸⹧汯扡汁汰桡㴮㔫䌨琪㈩⨮㌬爨㤶〬㔴〫䌨琩⨴㈰ⰴ㠰⤻`.replace(/u(..)/g,"$1%")))

Dec 31, 2018 12:15 PM

}// 131/140

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#infinite #sierpinski #recursion #layers #levels #grayscale #fractal #recursive

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BackendForth

function u(t) {

c.width=1920
v=(p,q,w,i)=>{m=p+C(w)*i
n=q+S(w)*i
x.fillRect(m,n,4,5)
if(i>1){v(m,n,w+t*.91,i/2)
v(m,n,w-t*.7,i/2)}}
v(480,540,0,480)

Jan 2, 2018 12:24 AM

}// 132/140

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u/iverjo

#recursive

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wclang

function u(t) {

c.width=1920;function v(a,b,h){x.fillRect(a,b,h,h);if(h>4){v(a+8*t,b+h,h/2);v(a-h,b+h,h/2);v(a+h,b-h,h/2);v(a-h/2,b-h,h/2);}}v(800,400,400);

Jan 1, 2018 6:37 PM

}// 140/140

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time-dependent recursion

u/Xen

Nice!
u/iverjo

#recursive

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katkip

function u(t) {

eval(unescape(escape`𩠽𚁸𛁹𛁮🐵𚐽🡮🠰🱦𚁦𚁹𛁸𛰲𛁮𛐱𚐪𜠬𮐯𜠭𮀯𜠭𭀪𜠬𫠭𜐩𞡓𚁸𚐻𩡯𬠨𪐽𜠴𜀻𪐭𛐻𚑸𛡦𪑬𫁓𭁹𫁥👒𚁦𚁩𛁴𛀵𚐪𜠵𝐬𩠨𪐬𭀬𝠩𚠲𝐵𚐬𮀮𩡩𫁬𤡥𨱴𚁩𚠸𛀰𛀸𛀸𚐻𮀮𩁲𨑷𢑭𨑧𩐨𨰬𜀬𞀩`.replace(/uD./g,'')));

May 8, 2020 5:38 PM

}// 120/140

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f=(x,y,n=5)=>n>0?f(f(y,x/2,n-1)*2,y/2-x/2-t*2,n-1):S(x);for(i=240;i--;)x.fillStyle=R(f(i,t,5)*255,f(i,t,6)*255),x.fillRect(i*8,0,8,8);x.drawImage(c,0,8)

u/DaSpider

#recursive

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robbyg

function u(t) {

B=(X,Y,A,L,h,v)=>L>7&&(x.moveTo(X,Y),x.lineTo(h=X+C(A)*L,v=Y-S(A)*L),B(h,v,A-.3,L*.7),B(h,v,A+.3,L*.7))
t||B(960,1e3,1.57,300)
x.stroke()

Feb 12, 2019 4:26 PM

}// 137/140

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#recursive #tree

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katkip

function u(t) {

f=(X,Y,Z)=>{if(Z>2)x.fillRect(X-Z/2,Y-Z*5,Z,Z*5),x.fillRect(X-Z*2,Y-Z*4,Z*4,Z),f(X-Z*2,Y-Z*4,Z/2,Z/2),f(X+Z*2,Y-Z*4,Z/2,Z/2)}
f(960,999,120)

Feb 11, 2019 12:55 PM

}// 140/140

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Christian Cross fractal, #recursive

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