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

} // 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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robbyg

function u(t) {

f=(X,Y,w)=>{var W=w/2,h=X-W,v=Y-W
x.rect(h,v,w,w)
if(W>9)f(h,v,W),f(h+w,v,W),f(h,v+w,W),f(h+w,v+w,W)}
t||f(960,540,540)
x.fill('evenodd')

Feb 11 2019 1:07 AM UTC

}// 137/140

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#recursive squares

u/robbyg

Thanks u/katkip for the recursive examples
u/katkip

Beautiful
u/robbyg

133: f=(X,Y,w,W,h,v)=>(W=w/2)>4&&(x.rect(h=X-W,v=Y-W,w,w),f(h,v,W),f(h+w,v,W),f(h,v+w,W),f(h+w,v+w,W)) t||f(960,z=540,z) x.fill('evenodd')

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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.

Show more comments…
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

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) {

r=(X,Y,s)=>{x.fillRect(X,Y,9,-s*8);if(s>1)r(X-s*4,Y-s*2,s/2),r(X+s*4,Y-s*2,s/2)};r(960,960,100)

Mar 7 2019 6:00 PM UTC

}// 95/140

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#recursive

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katkip

function u(t) {

c.width*=1;f=(X,Y,s)=>{if(s>10)x.fillRect(X-s*S(t+s),Y-s*C(t+s),s/2,s/2),f(X-s,Y,s/2),f(X,Y-s,s/2),f(X+s,Y,s/2),f(X,Y+s,s/2)}
f(960,540,800)

Jan 17 2019 3:05 PM UTC

}// 140/140

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To the top pls #recursion #recursive

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taupelink

function u(t) {

f=X=>{throw X};v=t|0
v?(s+=v+" ",v-1?u(v%2?3*v+1:v/2):(r=s,s="",f(r))):(s="",u(1))

Jul 19 2019 5:07 AM UTC

}// 82/140

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#collatz #recursive #recursion using u(t)

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katkip

remix of d/12164 by u/katkip

function u(t) {

c.width*=1;f=(X,s)=>{if(s>3)x.fillRect(960+S(X)*s,540+C(X)*s,9,9),f(X-0.02*C(t+X*T(X)),s-2)}
f(520+t,500)

Feb 5 2019 8:29 AM UTC

}// 105/140

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Electrical lighting trajectory simulation V2, high frequency current #recursive #recursion

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katkip

function u(t) {

c.width*=1;f=(X,Y,S)=>{if(S>2)x.fillRect(X,Y,S-2,90),f(X+S/2,Y-90,S/2),f(X,Y-90+C(t+X+S)*9,S/2)}
f(60,880,1760)

Feb 5 2019 8:16 AM UTC

}// 111/140

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Pistons create smooth waves #recursion #recursive

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iverjo

remix of d/302 by u/sigveseb

function u(t) {

(F=Z=>{for(W=4e3/Z,x.fillStyle=R(W,W/4,W/2),i=Z*Z*2;n=i%Z,m=i/Z|0,i--;n%2^m%2&&x.fillRect((n-t%2-1)*W,(t%2-3+m)*W,W,W));Z&&F(Z-6)})(36)

Jan 14 2017 4:06 PM UTC

}// 135/140

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#recursive

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taupelink

remix of d/17519 by u/katkip

function u(t) {

f=(x,y)=>C(x)*S(y)<-.3?f(y-2,x-1):S(x/3-2)+C(y*7);for(i=999;i--;)X=(r=Math.random)()*213,Y=r()*122,f(X/7,Y/7)<0?x.fillRect(X*9,Y*9,1,1):t

May 7 2020 12:31 AM UTC

}// 137/140

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remix with circles and black&white effects #recursive #waitforit

u/taupelink

imperfect circles...

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