Random dweets | Dwitter

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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robot0001

function u(t) {

t||(s=9,w=1920,h=10);c.width=w;x.translate(w/2,540);t*=.09;for(i=0;i<9;i+=.0009){x.fillRect(w*S(t+i),h*T(t*i),s,s);x.rotate(T(i*Math.PI/9))}

Feb 22 2017 10:08 PM UTC

}// 140/140

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E-Mouse

remix of d/7894 by u/Idicious

function u(t) {

c.width=1920
w=c.width
h=c.height/2
r=Array.from({length:w},(a,b)=>T(b/S(t)/1e2)/10)
for(i=0;i<w;i++)x.fillRect(i,h-r[i]*h,1,r[i]*h*2)

May 4 2018 4:12 PM UTC

}// 134/140

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u/BuRRak

Rather than using {length:w} you can use Array(w)

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magna

remix of d/24198 by u/magna

function u(t) {

eval(unescape(escape`󬬽󣝡󭍨󛭲󨝮󩍯󫜊󩜽󬬨󩬽󬬨󨜽󨬽󜌩󚬲󛬲󝌩󚬴󛍘󟝥󛜲󛬸󛍙󟝦󛜱󛬱󜬊󩭯󬬨󪬽󞜹󞜻󨜪󨜫󨬪󨬼󟜴󙬦󪬭󛜻󬼽󞜹󞜯󭌩󦽡󛍢󧜽󦽡󚭡󛝢󚭢󚽘󛌲󚭡󚭢󚽙󧜊󮌮󩭩󫍬󤽴󮝬󩜽󤬨󪬩󛍸󛭦󪝬󫍒󩝣󭌨󩜪󝌸󜌬󩬪󝌸󜬬󚼫󬼬󬼩`.replace(/u../g,'')))

Oct 22 2021 7:27 PM UTC

}// 123/140

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#slowrender #mandelbrot

u/magna

Uncompressed: r=Math.random e=r(f=r(a=b=0)*2.24)*4,X=e-2.8,Y=f-1.12 for(j=999;a*a+b*b<=4&&j--;s=999/t)[a,b]=[a*a-b*b+X,2*a*b+Y] x.fillStyle=R(j),x.fillRect(e*480,f*482,++s,s)
u/magna

Very shitty and slow :D
u/andrea270872

I can feel the struggle. Very cool.

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robbyg

remix of d/15194 by u/robbyg

function u(t) {

for(i=2e3;i--;x.fillRect(X,Y,1,1))d=Math.random()*420,X=960+C(d+i)*d,Y=540+S(d+i)*d,x.fillStyle=`hsl(9,50%,${90-Math.hypot(760-X,400-Y)/7}%`

Jul 30 2019 9:47 PM UTC

}// 140/140

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More realistic shading.

u/robbyg

You can change the position of the "light" by changing the two numbers in Math.hypot(). Also, golfing tips welcome!
u/pavel

Some golf tricks in d/12574
u/aleamb

#shading #sphere
u/Cloud

Render in Blender)

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joeytwiddle

remix of d/1763 by u/New_Core

function u(t) {

onkeyup=e=>{T||a.close();a=new AudioContext;o=a.createOscillator();o.connect(a.destination);o.frequency.value=7*1.06**e.keyCode;T=o.start()}

Apr 13 2017 12:32 PM UTC

}// 140/140

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A piano you can play with your keyboard. G is middle-c, i think

Show more comments…
u/joeytwiddle

Twinkle little star: GGNNPPN LLKKIIG NNLLKKIx2 GGNNPPN LLKKIIG
u/joeytwiddle

Silent Night: G IG D, G IG D, N NK, L LG, (I IL KIG IGD)x2, N NQ NKL P LGDGEB L
u/joeytwiddle

Star Wars: (IIIN U SRPZ U SRPZ U SRSP)x2 I IK KSRPN NPRP KM, I IK KSRPN UP. I IK KSRPN NPRP KM, IIN LJI GED BI. IKNSP
u/joeytwiddle

Thanks to @donbright who showed me where i could save 5 chars
u/iverjo

Very impressive :D
u/donbright

this is unbelievable. (ps thx but i stole the idea from others here)
u/donbright

(ok technically they gave it to me prob @cantelope / @manga)
u/Woodmouth

This is the strangest piano i've ever played, but good job!
u/Woodmouth

Also, i found a way to stop it, just press shift. (or any other key with a value too high or low to hear (At least i think that's what happens))
u/joeytwiddle

and of course thanks to New_Core for the intro to Web Audio API
u/joeytwiddle

#audio #music #piano #interactive
u/joeytwiddle

Star Trek intro: R M P H, F KP OKHMR RV Q T L, J OT SOLQV VZ
u/joeytwiddle

Star Trek main: B-L-KIGFE, C B-N-LKIGF, E-D FGIKLKN Q, P N D, I G (ILPS!)
u/joeytwiddle

One more you might know: NPSP WWU, NPSP UUS, NPSP S UR N NU S
u/joeytwiddle

Check the old comments for some simple tunes to play. You'll need to click on the blank canvas for keyboard focus. Hit Space, Shift or Escape for "silence".

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116

remix of d/2330 by u/mxfh

function u(t) {

with(x)font='29em s',fillStyle=`hsl(${S(7*t)*180},99%,${5*T(2*t)}%)`,fillText('∙',850+69*S(2*t),690+47*C(t)),drawImage(c,-20,-10,1960,1100)

Oct 14 2018 5:46 PM UTC

}// 139/140

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Pulsar

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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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vgel

function u(t) {

eval(unescape(escape`⠨䐽摯捵浥湴⥛儽≱略特卥汥捴潲≝⠢摩瘢⥼簰⤮潵瑥版呍䰽∼楮灵琾∊挮睩摴桼㵘㵙㴵〰੦潲⡃⁯映䑛兝⠢楮灵琢⤮癡汵攩砮晩汬剥捴⡘㴨堫⡃㰢䜢㼰㨹㤹⤩⼲ⱙ㴨夫⡃㰢䌢籼䌾≇∿㤹㤺〩⤯㈬㐬㐩`.replace(/u([^D].)/g,'$1%')))

Jan 2 2024 2:20 AM UTC

}// 139/140

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DNA Fractal Viewer

u/vgel

Inspired by https://www.biorxiv.org/content/10.1101/2023…
u/vgel

Instructions: 1. Find a FASTA file (e.g. https://www.ncbi.nlm.nih.gov/nuccore/AB75036…) 2. Copy the DNA, without the > header line 3. Click the invisible input in the top left of the canvas 4. Paste the DNA in to see the fractal

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elaborate

function u(t) {

for(i=0;i<8;i++)for(j=0;j<8;j++)x.fillStyle=`rgb(0,${Math.floor(255-40*i)},${Math.floor(255-40*j)})`,x.fillRect(800+i*T(.1*t+j)*44,0,2,t*99)

May 16 2019 4:31 AM UTC

}// 140/140

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retera

remix of d/4309 by u/retera

function u(t) {

n=10;f=Math.abs(t%2-1);i=(t*1e3)%c.width/n;for(j=0;j<c.height/n;j++){x.fillStyle=R(0,0,f*100+(Math.abs(100-i)^20));x.fillRect(i*n,j*n,50,n)}

Dec 28 2017 6:28 AM UTC

}// 140/140

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