Dweets awesomed by u/andrey.pro7k

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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tomxor

function u(t) {

f=_=>S((X*X+Y*Y)**.5*5+t)
eval(unescape(escape`景爨爽ㄶⱣ⹷楤瑨㵩㵲⨱㈻椭㴱⽲㭸⹦楬汒散琨爪⡘⨲⭙⬶⤬爪⡘⼲ⵙ⬳⭚⤬㌬㌩⥚㴱ⵦ⡘㵩┲ⴱⱙ㵩⽲⼶ⴱ⤬砮晩汬却祬攽恈卌⠤筚⨱㈰紬㤹┬㔰╠`.replace(/u(..)/g,"$1%")))

Mar 6 2019 9:35 PM UTC

}// 140/140

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Surface Plot #application

u/tomxor

Mini surface plotter! for visualising 2D scalar fields. Plug your own function into f :)
u/f8f82804

#d3
u/aleamb

wow!
u/katkip

f=_=>S(X*X*t+Y*Y*t)+C(X*X*t-Y*Y*t)
u/tomxor

#app

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pavel

function u(t) {

for(w=c.width=1e3,i=99;r=10*i--;i?x.stroke():x.fill())x.beginPath(p=(1+t/2-r/w)%2),x.ellipse(480,270+20*S(p*40)/9**p+!i*w*(p-2),r,r/3,0,0,7)

Mar 6 2019 7:01 AM UTC

}// 140/140

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#water #drop

u/katkip

Looks good
u/aleamb

great!
u/mcdxn

damn!

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pavel

remix of d/701 by u/sigveseb

function u(t) {

for(x[f='fillRect'](i=8,0,2e3,2e3);w=3*i--;)for(x.fillStyle=R(s=666/i,s/2,s/4),k=w*w;b=k--/w|0;a+b&1&&x[f]((a-t%2)*s,(b-2+S(t))*s,s,s))a=k%w

Mar 4 2019 8:47 PM UTC

}// 140/140

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More layers and a black background #improved

u/sigveseb

Nice!

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rodrigo.siqueira

function u(t) {

c.width|=σ=(X)=>{return 1/(1+Math.pow(Math.E,-X))}
for(i=-500;i<500;i++)
x.fillRect(i+950,820-σ(i/30*C(t*2)+Math.random()*2)*400,5,5)

Mar 4 2019 8:41 PM UTC

}// 133/140

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Sigmoid activation function used in Artificial Neural Networks. Animation shows changes of neural weights plus a random bias.

u/pavel

I often use sigmoids for movement. The ease-out / ease-in looks great. I used 1/(1+1e9**(.5-t%1)) in d/11146 for the 'jumps'.
u/katkip

#sigmoid #math
u/katkip

also #ai
u/rodrigo.siqueira

also #neural

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tomxor

function u(t) {

c.width=w=96
for(i=5e3;X=i%w,Y=i/w,i--;x.fillRect(X+2*Z,Y+4*Z,.6,1))Z=(.5+S(i/15+t*2)/2)*S(S(Y/8+t)+S(X/24+t)+t),Z=C(2*Z+S((X&Y)/(1+Z*Z))/8)

Mar 2 2019 7:46 PM UTC

}// 140/140

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Fractal Lake

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katkip

function u(t) {

// Transferring...








receiveMessage=pauseDemo=0;q="";l=q.length;for(i=616;i--;)q+=C(i+C(t+i/99)*10+t*29)<0?'0':'1'
throw q

Feb 28 2019 2:42 PM UTC

}// 128/140

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#binary #hax

u/rnbw

oh neat! i tried to do something like this once (never published it) but your execution is really good
u/Ath0r

cool!
u/joeytwiddle

#parallax
u/C010011012

throwing errors for animation? wow clever

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Ath0r

function u(t) {

f=(i,j)=>{x.beginPath(),x.lineWidth=j,x.ellipse(960,560,...i),x.stroke()}
f([r=300,r,0,0,7],9)
for(i=9;i--;)f([600+20*i,100,9,2.07,1.07],35)

Feb 27 2019 9:41 PM UTC

}// 140/140

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Saturn #planets

u/Xen

nice!
u/tomxor

#saturn #graphic
u/katkip

#icon
u/Ath0r

I wanted to involve "t" to add some animation but no characters left :(

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katkip

function u(t) {

c.width*=1;x.lineWidth=4;for(j=99;j--;)for(i=4;i--;)x.lineTo(960+C(i*1.57+3.14*C(t))*400,940+S(i*1.57+3.14*C(t))*100-j*8);x.stroke();

Feb 24 2019 12:27 PM UTC

}// 133/140

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Rectangular parallelepiped #math #d3 #geometry

u/f8f82804

#moire

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rodrigo.siqueira

remix of d/12434 by u/katkip

function u(t) {

t||(a=b=0)
for(i=2e3;i--;)x.fillRect(960+b*C(a),540+b*S(a),1,1),a+=1.8*C(2.6*a)+C(t/4+.009),b+=.002

Feb 20 2019 9:24 PM UTC

}// 99/140

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The Flower of Bifurcation #bifurcation

u/katkip

this is #cute #math

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pavel

remix of d/12355 by u/cantelope

function u(t) {

for(i=c.width|=h=355/226,w=960;Y=w-i--**h%w*2;x.fillRect(w+S(i+t)*w*r/z,540+Y/z,s=99/z/z,s))r=(Y*Y<8e5||Y%1)/S(i%h+h/2),z=4-S(t)-r*C(i+t)

Feb 14 2019 11:21 PM UTC

}// 137/140

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#uncompressed

Show more comments…
u/pavel

The base code draws a tube. 1/S(i%h+h/2) radius makes the tube have a square cross section.
u/pavel

(Y*Y<8e5||Y%1) randomizes the radius between 0 and 1 near top and bottom.
u/pavel

Err, between -1 and 1, and this makes the top and bottom panels.
u/cantelope

I see some gathering of points in the middle of the top and bottom panels, but other than that, a faithful reproduction. kudos!
u/pavel

I use polar coordinates, even though the radius is uniformly random that results in more dots near the middle :/
u/iverjo

#cube #d3

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