Top 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/23669 by u/rodrigo.siqueira

function u(t) {

c.style.filter=`sepia(`
A=a=b=.8/t;s=400
for(i=1e4;--i;b=A,A=a)x.fillRect(900+a*s,480+b*s,1,t<5),a=.4-b+Math.abs(a/2+1/b/2e3)*(A/3-.5)

Aug 29 2021 12:23 AM UTC

}// 134/140

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Axon formation around a multinucleate alien cell

u/sigveseb

Nice!
u/Toby

Fab! Do you have a source reference for the kind of iterated formula you're using?
u/rodrigo.siqueira

You can see the original equation by changing the to "s=70" and the end to: a=1-b+Math.abs(a)
u/rodrigo.siqueira

It's based on the "Gingerbreadman Map" #gingerbreadman https://www.dwitter.net/d/14641 I don't understand the details but I know that "Even the simplest mathematical expressions, when interpreted as dynamical systems, yield fractals."
u/Toby

Ahhhh yes of course! I remember Gingerbreadman now! Thank you Rodrigo!

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rodrigo.siqueira

remix of d/23456 by u/rodrigo.siqueira

function u(t) {

for(c.width=w=512,d=new ImageData(w,w),m=w*w,i=-1;m--;d.data[i+=4]=T(Y/r-t*9|X/r)*w)r=((X=m%w-128)*X+(Y=m/w)*Y+i)/5e4
x.putImageData(d,0,0)

Aug 2 2021 9:37 PM UTC

}// 139/140

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Fly over a pixel surface

u/tomxor

oooh

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rodrigo.siqueira

remix of d/23284 by u/erin

function u(t) {

c.style.filter=`blur(2px)contrast(3)invert(`
for(i=c.width|=f=g=>i*g(i/5+t)/5+440*C(i)*g(i/5-t);i--;)x.lineTo(960+f(C),540+f(S))
x.stroke()

Jul 5 2021 2:32 AM UTC

}// 139/140

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Pulsating star and pentagon

u/jelmo

I like this

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rodrigo.siqueira

remix of d/21251 by u/rodrigo.siqueira

function u(t) {

for(i=2e3,f=g=>i*g(i*i)*g(i/t)**.3;i--;x.fillRect(960+f(C),700-f(S),9/t,9/t))x.fillStyle=`hsl(${t*i/9},99%,${S(i*i+t)*99}%,.1`

Jan 20 2021 3:26 PM UTC

}// 126/140

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Volcano sky

u/danny@hille.dk

I dig it!
u/magna

OMG
u/magna

I could hang this in my living room

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rodrigo.siqueira

remix of d/5958 by u/Jezza

function u(t) {

x.fillRect(K=4*frame,1078,4,2)
x.drawImage(c,1,-1)
x.drawImage(c,1,-1)
x.drawImage(c,-K/2,-8*frame)
x.globalCompositeOperation='xor'

Jan 14 2021 4:47 PM UTC

}// 132/140

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Sierpinski Plotter #fractal #sierpinski #generator #fullscreen

u/Qwitter

Cantor Stalagmites Too
u/erin

frame >> t*60
u/codingsilver

fractal finesse

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rodrigo.siqueira

remix of d/21095 by u/rodrigo.siqueira

function u(t) {

x.globalAlpha=.1
for(i=2e3,f=g=>i*C(i)*g(i/t/99)/t;i--;x.fillRect(960+f(S),540+f(C),9/t,9/t))x.fillStyle=`hsl(${t*i/9},99%,${C(i+t)*99/t}%`

Jan 7 2021 9:52 PM UTC

}// 139/140

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Fuzzy color double spiral #spiral

u/Xen

nice!
u/magna

Nice technique/style! Looks like sooty/mossy concrete. #texture

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rodrigo.siqueira

remix of d/20922 by u/rodrigo.siqueira

function u(t) {

for(i=1080;i--;x.fillRect(0,i,1+i/t,1))Y=i/230,
h=300*S(Y%S(m=t/9%S(p=C(q=Y*S(Y/3-S(t)/3))))),
x.fillStyle=R(h*q,h*m,h*p)
x.drawImage(c,1,0)

Dec 5 2020 7:13 PM UTC

}// 140/140

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Variation of the scrolling version by u/danny@hille.dk

u/danny@hille.dk

Freaking Awesome
u/danny@hille.dk

I love the way it starts

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rodrigo.siqueira

remix of d/13693 by u/rodrigo.siqueira

function u(t) {

x.fillRect(0,0,2e3,2e3)
for(var i=5e3;i--;x.clearRect(999+999*X/4,1e3-Y*99-450,6,6))
var X=(U=2+C(i+t*5))*S(i*i),Y=U*S(i-X*2)

Jul 13 2020 7:43 PM UTC

}// 125/140

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Moving thing

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rodrigo.siqueira

remix of d/17700 by u/yonatan

function u(t) {

for(c.width|=k=i=560;i--;x.strokeRect(960-i*2,400+9*C(t)*k/i-i/1.3,i*4,i*2))n=i/2.12,x.setLineDash((t*k+1e5/i)%99>50?[n*i,n,0]:[n,0,n])

Feb 22 2020 10:27 PM UTC

}// 136/140

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Upward and downward road tunnel. View it in fullscreen mode.

u/13thptr

woah at first sight I thought this was compressed :0 nice job
u/joeytwiddle

#tunnel
u/katkip

nice

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rodrigo.siqueira

remix of d/17299 by u/tomxor

function u(t) {

for(A=a=b=0,i=1e4;i--;x.fillRect(a*800-640,b*900,.3,1))
r=0|(1-~t/2)*Math.random(),
a+=(r-a/3+b*S(a*2))/1.8,
b+=.4-b/3+C(A*2)/3-.03,
A=a

Jan 20 2020 8:55 PM UTC

}// 136/140

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This starts with a dual structure for 2 possible values of "r" (random 0 or 1) and then a triple structure appears when r is changed to 3 possible values ( 0 or 1 or 2) #tree

u/rep_movsd

Actually a remix of https://www.dwitter.net/d/15329

dwitter.net | rodrigo.siqueira (20417)