Dweets awesomed by u/robbyg

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: #Food

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KilledByAPixel

remix of d/11335 by u/keithclark

function u(t) {

for(j=5e3;r=j--/(9-++t%9);x.fillRect(j,0,.2,2e3))x.clearRect(C(j)*r+960,S(j*j)*r+540,r>>=8,r)

Aug 18 2023 2:10 PM UTC

}// 93/140

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Tiny Starfield 🌠

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rodrigo.siqueira

remix of d/28265 by u/rodrigo.siqueira

function u(t) {

for(c.width%=W=X=2e3;X--;x.fillRect(X,Y*999,1,W))for(Y=1,k=9;k--;Y-=Math.abs(f(3**k*X/W+S(X/299+Y-t)/5)/3**k))f=n=>n+~n+.5

Aug 9 2023 1:54 PM UTC

}// 122/140

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Moving mountains #mountains

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rodrigo.siqueira

remix of d/28264 by u/rodrigo.siqueira

function u(t) {

for(c.width%=X=2e3;X--;x.fillRect(X,Y*600+200,1,3e3))for(Y=1,k=9;k--;Y-=f(t/2-f(3**k*X/1918))/2**k)f=n=>2*(n+~n+.5)**2

Aug 8 2023 7:24 PM UTC

}// 118/140

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Pulsating Blancmange waves

u/robbyg

My eyes can't decide what is foreground and what is background. I think it all depends on the edges: when the black is further up the edge, white is foreground.
u/cantelope

nice

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rodrigo.siqueira

function u(t) {

f=n=>Math.abs(n-Math.round(n))
for(X=1920;X--;){
 Y=1
 for(k=9;k--;){
  Y-=(Math.abs(f(2**k*X/1918))/2**k)
 }
 x.fillRect(X,Y*999,2,9)
}

Aug 7 2023 2:20 PM UTC

}// 136/140

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Blancmange curve (Takagi curve) #fractal

u/rodrigo.siqueira

Based on the discussion: "Unexpected link between pure mathematics and genetics." https://news.ycombinator.com/item?id=37011776
u/rodrigo.siqueira

This fractal curve described by Teiji Takagi in 1901 is constructible by midpoint subdivision. It's called the blancmange curve, because it looks like the French pudding dessert. Implementated here from the "blanc(x)" function: https://en.wikipedia.org/wiki/Blancmange_cur…

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rodrigo.siqueira

remix of d/28252 by u/rodrigo.siqueira

function u(t) {

for(i=1e5;i--;x.fillRect(960+C(K=i+2/C(i*2)/9+S(a*9)/a)*740*a,540-S(K)*630*a,(t<1)*a,.4))a=i*i*t%2

Aug 7 2023 12:59 PM UTC

}// 98/140

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Spiral Labyrinth #spiral

u/cantelope

damson thats cool. I like that
u/Joachim

Very satisfying!

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rodrigo.siqueira

remix of d/28249 by u/rodrigo.siqueira

function u(t) {

typeof 𓂀







for(𓂀=4e4;𓂀--;x.fillRect(960+C(K=𓂀*2+2/T(𓂀/3)+.5/a-3)*290*(a),540-S(K)*290*S(a*1),(t<3)/6,.02+a))a=S(t*𓂀)**(-.6+𓂀%19)%3

Aug 5 2023 10:39 PM UTC

}// 135/140

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𓂀 Eye of Horus #spiral

u/cantelope

Imhotep tho

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cantelope

function u(t) {

for(x.fillRect(0,0,i=c.width|=h=540,i*=9);i--;x.clearRect(960+(i**.9%1-.5)*S(t/2)*l/Z*h,h+(i**2.1%1-.5)*l/Z*h,s=l/Z,s))Z=(l=99)-(i+t*30)%98

Aug 5 2023 12:46 AM UTC

}// 139/140

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spatial collapse

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rodrigo.siqueira

remix of d/28246 by u/rodrigo.siqueira

function u(t) {

for(i=4e4;i--;x.fillRect(960-C(K=i*2+2/T(i/3)+.5/a-3)*530*S(a),540-S(K)*440*a,(t<3)*a,a+.04/t))a=S(t*i)**(-.5+i%19)/(.01/t+1)

Aug 4 2023 3:01 PM UTC

}// 125/140

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Time travel #spiral

u/geneptalbot

everything you make is incredible!
u/danny@hille.dk

Very nice. It kind of looks like a late-70s magazine ad. Pacman and drugs—your kids will love them!
u/cantelope

danny, sarcastic 'drugs for [your] kids' remarks and judgement about others' "sins" is all well outside the scope of this platform. Might want to get back to building and being supportive

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Sitacious

function u(t) {

eval(unescape(escape`󮬽󨼮󭽩󩍴󪌽󜼰󜌻󒭴󙜱󛬰󝬼󛬰󜬦󙬨󭼽󜼴󚜊󭼪󟜱󛬰󝬊󫜽󝌰󒭦󫽲󚍩󟝭󚭭󞽩󛜭󞼩󮌮󩭩󫍬󤭥󨽴󚍩󙝭󚭷󛍾󯬨󪜯󫜩󚭷󛍓󚍩󚭩󚜾󜌦󙭷󛍷󚜊󩭯󬬨󪜽󫜪󫜻󪜭󛜻󚝸󛭦󪝬󫍒󩝣󭌨󪜥󫜪󭼯󫜬󯭾󚍩󛽭󚜪󭼯󫜬󤼨󪜪󪜩󟬰󙬦󭼯󫜬󭼯󫜩`.replace(/u../g,"")))

Aug 2 2023 1:23 PM UTC

}// 127/140

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can you help golf? #infinite

u/robbyg

I feel like this is close but not quite right: w=t%1.06<.02?34:w*1.06;m=40,y=w/m;for(c.width=i=m*m;p=--i*i;q&&x.fillRect(i%m*y,~~(i/m)*y,y,y))q=S(p)>0,q&&x.fillRect(i%m*w,~~(i/m)*w,w,w)
u/Sitacious

u/robbyg thats perfect!
u/Joachim

A bit slow but 130 char: w=t%.8<.02?7:w/.9;m=150,y=w/m;for(c.width=999,i=m*m;p=--i*i;q&&x.fillRect(i%m*y,i/m*y,y,y))q=S(p)>0,q&&x.fillRect(i%m*w,i/m*w,w,w)

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rodrigo.siqueira

remix of d/28208 by u/rodrigo.siqueira

function u(t) {

c.width|=0
for(i=2e4;i--;x.fillRect(980+C(K=2/a-1/S(a+C(t/2))+C(i+t))*500*a+(S(a+t*3)*99),(C(a+t*6)*99)+570-S(K)*400*a,5*a,a*5))a=S(i*i)**2

Aug 1 2023 11:22 PM UTC

}// 139/140

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Bouncing spiral

u/cantelope

wild
u/andrea270872

wow

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