New #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

} // 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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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 UTC

}// 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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rodrigo.siqueira

remix of d/10314 by u/veubeke

function u(t) {

c.width^=0
s=(t%3)**3
x.font="2in'"
for(Y=9;Y--;)for(X=Y+1;X--;)x.fillStyle=R(Y*99,Y*27,0),x.fillText("▲",865+(X*48-Y*24)*s,(Y-4)*46*s+600)

Jan 1 2019 4:36 PM UTC

}// 139/140

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Expanding unicode triangles. German colors.

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u/katkip

German colors? I'm curious to see the Romanian ones.
u/lionleaf

#recursive
u/lionleaf

#zoom
u/username

seemless
u/username

<- this version is not
u/username

^ meant to use an up arrow

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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 UTC

}// 131/140

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

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katkip

function u(t) {

r=(X,Y,s)=>{if(s>1)x.beginPath(),x.arc(X,Y,s*2,0,7),x.stroke(),r(X-s,Y,s/2),r(X+s,Y,s/2)}
r(960,540,480)

Dec 31 2018 11:56 AM UTC

}// 104/140

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#recursive circles #recursion #circle #arc #fractal

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katkip

remix of d/11595 by u/katkip

function u(t) {

eval(unescape(escape`挮獴祬攮扡捫杲潵湤㵒⠩Ⱳ㴨堬夬猩㴾筩昨猾㌩砮晩汬却祬攽恨獬⠤筳⩴紬㤰┬㐰┩怬砮晩汬剥捴⡘⵳ⱙ⵳ⱳ⨲ⱳ⨲⤬爨堭猬夭猬猯㈩Ⱳ⡘⵳ⱙ⭳ⱳ⼲⤬爨堫猬夭猬猯㈩Ⱳ⡘⭳ⱙ⭳ⱳ⼲⥽㭲⠹㘰ⰵ㐰ⰴ㠰⤻`.replace(/u(..)/g,"$1%")))

Dec 31 2018 11:36 AM UTC

}// 138/140

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T-square #fractal #recursion #recursive #rainbow

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katkip

function u(t) {

c.width^=0;r=(X,Y,s)=>{if(s>3)x.fillRect(X-s,Y-s,s*2,s*2),r(X-s,Y-s,s/2),r(X-s,Y+s,s/2),r(X+s,Y-s,s/2),r(X+s,Y+s,s/2)}
r(960,540,t*99)

Dec 31 2018 11:27 AM UTC

}// 134/140

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T-square #fractal #recursion #recursive

u/katkip

Why this has no likes? wtf
u/joeytwiddle

It has two likes now. Is that above average? ^^

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katkip

remix of d/11588 by u/katkip

function u(t) {

c.width|=f=(X,Y,d=700+t*80,a=C(d)*500,b=d/2)=>{if(d>20)x.fillRect(X-b,Y-b,d,d),f(X-b,Y,b),f(X,Y-b,b),f(X+b,Y,b)};x.globalAlpha=.2,f(960,800)

Dec 30 2018 1:37 PM UTC

}// 140/140

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#sierpinski using alpha

u/katkip

#fractal, #recursive

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katkip

function u(t) {

c.width^=0
f=(X,Y,d,a=C(d)*d,b=d/2)=>{if(d>20)x.strokeRect(X-b,Y-b,d,d),f(X+a,Y,b),f(X,Y+a,b),f(X-a,Y,b),f(X,Y-a,b)};f(960,540,700-t)

Dec 30 2018 1:06 PM UTC

}// 133/140

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#recursive squares. Thanks to u/BirdsTweetCodersDweet for golfing

u/katkip

It's better on fullscreen, there are different patterns

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katkip

function u(t) {

c.width^=0;f=(X,Y,d)=>{if(d>30)x.arc(X,Y,d,0,7),f(X-d*C(d+t),Y,d/2),f(X,Y-d*S(d+t),d/2),x.stroke()}
f(960,540,300)

Dec 30 2018 12:21 PM UTC

}// 114/140

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Perfectly moving circles inside a circle #recursive

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katkip

function u(t) {

eval(unescape(escape`挮睩摴桞㴰㭴⼽㈻昽⡘ⱙⱳ⤽㹻砮扥杩湐慴栨⤻楦⡳㸲〩砮慲挨堬夬猬〬㜩ⱸ⹳瑲潫攨⤬昨堫䌨猫琩⩳ⱙⱳ⼲⤬昨堭䌨猫琩⩳ⱙⱳ⼲⤬昨堬夫䌨猫琩⩳ⱳ⼲⤬昨堬夭䌨猫琩⩳ⱳ⼲⥽㭦⠹㘰ⰵ㐰ⰷ〰⤻`.replace(/u(..)/g,"$1%")))

Dec 30 2018 10:15 AM UTC

}// 135/140

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#circles #fractal #recursion #recursive I'm just like a gifted autistic kid who finally discovered recursion c.width^=0;t/=2;f=(X,Y,s)=>{x.beginPath();if(s>20)x.arc(X,Y,s,0,7),x.stroke(),f(X+C(s+t)*s,Y,s/2),f(X-C(s+t)*s,Y,s/2),f(X,Y+C(s+t)*s,s/2),f(X,Y-C(s+t)*s,s/2)};f(960,540,700)

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