New #spiral 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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rodrigo.siqueira

remix of d/20495 by u/Noobisuke

function u(t) {

if(!t)x.translate(1250,660)
if(t<3.14)x.lineWidth=4/(1+t*t),x.rotate(t/19),
ⵠ=320*(1-S(t/2)),x.strokeRect(-ⵠ*3,-ⵠ,2*ⵠ,2*ⵠ)

Nov 6 2020 3:39 PM UTC

}// 122/140

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𝜋 spiral box. It takes 𝜋 seconds to complete the drawing. #spiral

u/ciaccodavide

Love it!

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rodrigo.siqueira

remix of d/20495 by u/Noobisuke

function u(t) {

if(!t)x.translate(960,540)
if(t<1.5)x.lineWidth = 8/t,x.rotate(t/9),d=950*(1-S(t))
x.strokeRect(-d,-d,2*d,2*d)

Nov 6 2020 3:00 PM UTC

}// 110/140

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Spiral formation (rotating squares) #spiral

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rodrigo.siqueira

remix of d/12398 by u/rodrigo.siqueira

function u(t) {

f=(X,Y,r,a,s,d=1)=>r>.5&&x.lineTo(X,Y)|f(X+C(a-=s/3.9)*r,Y+S(a)*r,r-r/22,a,s,-d)|f(X,Y,r/3,a+s*d,s*d)
t||f(400,200,130,1.5,.6)|x.stroke()

Nov 4 2020 4:06 PM UTC

}// 137/140

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Fractal plant swirl #fern #spiral #fractal #plant

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rodrigo.siqueira

remix of d/20439 by u/rodrigo.siqueira

function u(t) {

for(i=2e3,f=(X,Y,n=135)=>X**3/Y<42?f(X*X-Y*Y-.8,2*X*Y+.2,n-3):x.fillStyle=`hsl(${6*n},90%,${n}%`;i--;x.fillRect(i,t*60,1,i))f(i/5e3-.7,t/85)

Nov 1 2020 6:18 PM UTC

}// 140/140

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"The Thread. The world is an infinite tapestry. There is a thread that runs between any two people, no matter when they lived or where. Find a thread and follow it." (The Teller of Tales) #fractal #pickover #spiral

u/magna

WOW

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rodrigo.siqueira

remix of d/20301 by u/rodrigo.siqueira

function u(t) {

f=(X,Y,n=0)=>X*X>4?n:f(2*X*Y-.7,T(Y*Y-X*X),n+1)
for(i=w=2e3;i--;x.fillRect(i,t*60,1,火))
x.fillStyle=R(火=f(i/w,t/28-.1)**1.6,火/6)

Oct 20 2020 12:48 PM UTC

}// 128/140

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Spiral of Fire (chinese dragon skin) #fractal #spiral

u/lionleaf

#waitforit This is insane! Super cool
u/Parasolian

Very nice. How to do this? https://jljulienleonard.wordpress.com/
u/rodrigo.siqueira

#dragon

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rodrigo.siqueira

remix of d/20258 by u/rodrigo.siqueira

function u(t) {

f=(X,Y,n=0)=>X*X>4?n:f(2*X*Y-.67,S(Y*Y-X*X),n+1);for(i=w=1920;i--;x.fillRect(i,t*60,1,g))x.fillStyle=R(g=f(i/w,t/22)**1.2,g/2.5,140/(1+t/5))

Oct 16 2020 9:14 PM UTC

}// 140/140

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Sunset shades #fractal #spiral

u/rep_movsd

Severely undervoted

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rodrigo.siqueira

remix of d/20249 by u/ntsutae

function u(t) {

f=(X,Y,n=0)=>X*X>4?n:f(2*X*Y-.7,S(Y*Y-X*X),n+1);for(i=w=1920;i--;x.fillRect(i,t*60,1,g))x.fillStyle=R(g=f(i/w,t/22)**1.3,g/2.5)

Oct 13 2020 3:34 PM UTC

}// 127/140

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Melting hot #fractal #spiral

u/Xen

sweet style
u/katkip

beautiful
u/rep_movsd

#underrated

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rodrigo.siqueira

remix of d/20147 by u/rodrigo.siqueira

function u(t) {

with(x)for(c.width|=j=20,translate(820,r=400);j--;scale(.8,.8))rect(S(t)*710,99-r,r/2,r*2.2),translate(350,115),rotate(t);x.fill`evenodd`

Oct 1 2020 10:03 PM UTC

}// 137/140

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#default #spiral moving

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rodrigo.siqueira

remix of d/20136 by u/rodrigo.siqueira

function u(t) {

with(x)for(c.width|=j=60,translate(960,r=540);j--;scale(.9,.9))
rect(r,r,r*1.5,r*1.5),rotate((~t+S(t*3)**8)/2);x.fill`evenodd`

Sep 30 2020 7:42 PM UTC

}// 127/140

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Multiple structures of the pulsating #spiral

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rodrigo.siqueira

remix of d/20128 by u/rodrigo.siqueira

function u(t) {

with(x)for(c.width|=j=62,translate(960,r=500);j--;scale(.9,.9))rect(-155,150,r/3,r/3),rotate(-.49*(1-S(j/(6+5*S(t-1 )))/9));x.fill`evenodd`

Sep 29 2020 3:29 PM UTC

}// 139/140

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Living ammonite seashell #spiral #organic

u/danny@hille.dk

glitchy version with(x)for(c.width|=j=50,translate(960,r=500);j--;scale(.9,1))rect(-299,299,r/2,r/2),rotate(-.3*S(Math.random()-C(t))) x.fillevenodd

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