Dweets by u/rodrigo.siqueira

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.

Try the new frontend: beta.dwitter.net
Current theme challenge: #Food

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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/20477 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)*r,Y+S(a)*r,r-r/22,a,s,-d)|f(X,Y,r/2.9,a+s*d,s*d)
t||f(1280,214,118,1.3,.6)|x.stroke()

Nov 4 2020 4:13 PM UTC

}// 138/140

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Organic spirals #plant #fractal

u/ciaccodavide

Beautiful!
u/Xen

Sexy!!!
u/danny@hille.dk

wow!
u/rodrigo.siqueira

My Instagram with this image (framed and zoom): https://www.instagram.com/p/CHLmJNKlevK/
u/tomxor

#art

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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/17179 by u/rodrigo.siqueira

function u(t) {

X=Y=Z=d=.02
for(i=9e3;i--;c.style='filter:invert(1')X-=d*(Y+Z),Y+=d*(X+.2*Y),Z+=d*(.2+Z*(X-5)),x.lineTo(900+72*X,800-Z*48+Y*30)
x.stroke()

Nov 4 2020 2:26 AM UTC

}// 138/140

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The Rössler Attractor (printed version). Here is a plot print of this image: https://www.instagram.com/p/CHJQov_Fly_/ The vectorial svg file to print was generated using Turtletoy here: https://turtletoy.net/turtle/c82f5e2af3 #plotter

u/rodrigo.siqueira

Comment by "themarinus" (he printed the image using a pen plotter): "The Rössler Attractor. This beautiful design is made by Rodrigo Siquera over at turtletoy. Loved it so much that I turned his line art into a plot! 160 grams A4 black cardstock White acrylic ink, with a 0.5mm line width."
u/Xen

love it
u/andrea270872

i did recognize it! Terrific

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rodrigo.siqueira

remix of d/13702 by u/rodrigo.siqueira

function u(t) {

for(c.width|=w=960,i=4e3;i--;x.lineTo(w+w*X/Z,w*Y/Z+540))
X=(S(V=i/3.1416001))*S(U=V*6e3+t/9)*4,Y=(C(V/U))*S(V*2)*2,Z=C(U)-5-Y/t
x.stroke()

Nov 3 2020 5:09 PM UTC

}// 139/140

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Vector formation object #torus The vectorial version is here https://turtletoy.net/turtle/e35cdc88c1 (to be printed using plotter)

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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/20238 by u/rodrigo.siqueira

function u(t) {

for(i=2e3,f=(X,Y,n=235)=>X**3/Y<n?f(X*X-Y*Y-.8,2*X*Y+.2,n-3):x.fillStyle=`hsl(${n*4},90%,${n/2}%`;i--;x.fillRect(i,t*60,1,999))f(i/3e3,t/50)

Oct 30 2020 4:35 PM UTC

}// 140/140

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Pickover Stalks Orbit Traps #julia zoom white purple #fractal for X**3/Y<n #pickover

u/danny@hille.dk

Wow that is beautiful
u/katkip

satisfying color pallete
u/danny@hille.dk

who knew that kale was digitally represented in the julia set? for(i=2e3,f=(X,Y,n=135)=>X**3/Y<n?f(X*X-Y*Y-.9,2*X*Y+.2,n-3):x.fillStyle=hsl(${60+n},90%,50%;i--;x.fillRect(i,t*60,1,999))f(i/3e3,t/50)

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rodrigo.siqueira

function u(t) {

if(t<2.86)
for(i=~~(N=95**t);i--;) {
 X=S(i**7)*210*(t**.5)
 Y=S(i**8)*200*(t**.7)
 x.fillRect(960+X*3,540+Y*2.6,1.5,1.5)
}

Oct 28 2020 3:14 PM UTC

}// 123/140

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Magnetic monopole fields

u/rodrigo.siqueira

Final image (for the impatient): https://twitter.com/rsiqueira/status/1321473…

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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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