Dweets by u/loni_art

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: #Opposites

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loni_art

function u(t) {

c.width|=R=θ=1
x.globalAlpha=.2
for(i=2e4;i--;R+=(1+t/16)*S(θ),θ=(θ+R)%6.28,R%=6.28)x.fillRect(S(θ)*R*75+999,C(θ)*R*75+600,9,9)

Sep 24 2018 2:44 AM UTC

}// 127/140

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Chirikov-Taylor map, automation on K #mapping #chaos #oscillation #waitforit

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u/joeytwiddle

https://wikipedia.org/wiki/Standard_map
u/donbright

woah
u/DataMeta

Niiiice
u/John_Matysik

tis nice
u/loni_art

i just noticed i got it wrong, since in treating angular momentum as radius!! its still a chaotic map but a different kind
u/MatthewKhan

tis

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loni_art

remix of d/9118 by u/stiaje

function u(t) {

c.width|=x.stroke()
x.translate(960,540)
r=a=>(x.rotate(a),l=>x.fillRect(-5,-50,9,l))
r(7*t+3)(500)
r(t/17-t*7+7)(350)

Aug 5 2018 7:22 PM UTC

}// 118/140

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golfed even more via evil

u/richev

Nice lambda!

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loni_art

remix of d/9014 by u/loni_art

function u(t) {

c.width|=0
x.globalAlpha=.3
m=T(t)%1
for(i=64;I=32-i+m,i--;)for(j=32;J=16-j+m,j--;)x.fillRect((2*I*J+96)*10,(I*I+360)*1.5,99,99)

Jul 31 2018 11:26 PM UTC

}// 129/140

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Squared Dual

u/loni_art

this is the function (a+be)^2 where e^2 = 0, flipped the x with the y axis for aesthetics

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loni_art

function u(t) {

c.width|=0
x.globalAlpha=.3
m=T(t)%1
for(i=64;I=32-i+m,i--;)for(j=32;J=16-j+m,j--;)x.fillRect((I*I-J*J+96)*10,(2*I*J+360)*1.5,99,99)

Jul 31 2018 11:23 PM UTC

}// 133/140

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Squared Complex

u/loni_art

this is the function z^2

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loni_art

function u(t) {

function U(X,Y,w,i){(i&&w>1)?(x.fillRect(X,Y,w,50),U(X,Y+99,w/4,i-1),U(X+2*w/3,Y+99,w/3,i-1)):0}
U(0,0,c.width,Math.floor(t));

Jun 6 2018 4:18 AM UTC

}// 126/140

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Dust

u/joeytwiddle

I can't or won't say who invented this. Or did I? Reread this. Pause. Reread this.
u/loni_art

made by the guy who's surname is the worst way to say "singer" in spanish

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loni_art

function u(t) {

t?(d=X+.1*(Y-X),e=Y+.01*(X*(28-Z)-Y),Z+=.01*(X*Y-8/3*Z),X=d,Y=e,x.fillRect(Z*20+o,X*20+o,9,9)):(X=.2,Y=Z=2,d=e=o=550,x.globalAlpha=.2)

Jun 4 2018 6:35 PM UTC

}// 134/140

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Lorentz

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u/loni_art

#chaos
u/loni_art

to have fun: modify the x,y,z variables
u/DataMeta

Amazing... It's like pseudo orbital mechanics! This inspired me to finally try something in "3D"
u/zanella

Been wanting to do a Lorentz system ever since I first saw Dwitter. Congrats! :)
u/BirdsTweetCodersDweet

#Lorenz #Attractor #lorenz #attractor #lorenzattractor
u/Mannaggia

<3

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loni_art

function u(t) {

c.width|=f=j=k=0
h=60
for(i=999;i--;x.fillRect(j*h,k*h,h,h),j=i%h,k=i/h|0,f=j^~k)
x.fillStyle=R(...[.3,.2,.2].map(d=>127*(1+C(6*(f+t-d)))))

Mar 11 2018 10:27 PM UTC

}// 140/140

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loni_art

remix of d/6894 by u/loni_art

function u(t) {

t?0:x.fillRect(0,0,2e3,2e3);
a=100
for(i=20;i--;x.fillRect(i*a,(5+T(i-t))*a,a/2,a))
x.fillStyle=R(...[0,6,12].map(d=>127*(1+C(d+i*6-t))))

Feb 13 2018 5:01 PM UTC

}// 137/140

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golden mist, thanks to Annan for the golf

u/AnnanFay

👍

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loni_art

function u(t) {

p=(d)=>(127*(1+C(6*d+t)))
c.width|=a=100
for(i=9;i--;x.fillRect((5+i+S(t))*a,(5+C(i-t))*a,a/2,a))
x.fillStyle =   R(p(i),p(.1+i),p(.2+i),1)

Feb 13 2018 3:32 PM UTC

}// 139/140

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procedural palette

u/loni_art

taken from here: http://www.iquilezles.org/www/articles/palet…
u/aleamb

nice
u/joeytwiddle

#colors

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loni_art

function u(t) {

c.width|=w=40
f=Math.floor;l=Math.log;
for(i=10*w;i--;(-1<(l(i/3*w)/l(2)-(3*(i%w+t)+i/w))%2)?x.fillRect((i%w)*w,f(i/w)*w,w,w):0);

Feb 5 2018 7:44 PM UTC

}// 129/140

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is random? is it not?

u/loni_art

note: this was an attempt of using tupper's formula to show a very special thing, but sadly, it didn't work, so i turned into a itneresting thing
u/iverjo

Cool, I actually had the same idea after seeing a tweet about Tupper's formula

dwitter.net | loni_art (113)