Top #tunnel dweets

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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rikardlindstrom

remix of d/4818 by u/rikardlindstrom

function u(t) {

!t&&x.translate(980,540)
for(i=20;i;i--){w=i*98
x.fillStyle='#'+(3E3|(25<<(i+t*20)%28)).toString(16).substr(-6)
x.fillRect(l=-w/2,l,w,w)}

Dec 30 2017 5:48 PM UTC

}// 137/140

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u/joeytwiddle

reverse #tunnel

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mnt

remix of d/3030 by u/New_Core

function u(t) {

x.globalAlpha=.2;for(x.fillRect(0,0,2e3,2e3),W=j=980;--j;x.clearRect(W+S(p=t+j-5.3*V)/Z*W-Z*-9,540+C(p)/Z*W,s=60/Z,s))Z=j%18-t*5+(V=t*6|0)

Dec 29 2017 5:14 PM UTC

}// 138/140

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tunnel slowly fades away

u/katkip

#tunnel

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danny@hille.dk

function u(t) {

eval(unescape(escape`󭍼󯌨󢜽󫭥󭼠󢝭󨝧󩝄󨝴󨜨󨼮󭽩󩍴󪌽󭼽󜬵󝜬󪌽󜜶󜌩󚜻󩭯󬬨󪜽󭼪󪌻󪜭󛜻󢜮󩍡󭍡󛭳󩝴󚍛󛌬󚍰󚽴󚭷󙭷󧭷󚭡󚬱󛬶󚽷󛝴󚭷󙭷󚜭󬌯󞜬󭽝󛍩󚬴󚜩󨜽󣝡󭍨󛭡󭍡󫬲󚍘󟜭󛬵󚼱󚬨󪜥󭼩󛽷󛍙󟜭󛬴󚼲󚭩󛼱󩜵󚜬󬌽󭼯󚍙󚭙󚽘󚭘󚜪󚬮󝜪󛬵󞽸󛭰󭝴󢝭󨝧󩝄󨝴󨜨󢜬󜌬󜌩`.replace(/u../g,'')))

Aug 19 2021 9:08 PM UTC

}// 140/140

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Second attempt at an old school tunnel effect

Show more comments…
u/danny@hille.dk

Uncompressed code: t||(I=new ImageData(c.width=w=255,h=160));for(i=w*h;i--;I.data.set([,,(p+t*w&w^w*a*1.6+w-t*w&w)-p/9,w],i*4))a=Math.atan2(X=-.5+1*(i%w)/w,Y=-.4+2*i/1e5),p=w/(Y*Y+X*X)**.5*.5;x.putImageData(I,0,0)
u/danny@hille.dk

#tunnel
u/danny@hille.dk

first attempt: d/23462
u/danny@hille.dk

Javascript garbage collector is struggling, when you create a new ImageData at each run, which results in some nasty stuttering. t||(I=new ImageData... fixes this issue
u/magna

This worked for me: I=x.getImageData(0,0,c.width=w=255,h=160) (no need for t|| check)
u/danny@hille.dk

u/magna while getImageData does not hit the garbage collector quite as hard, it takes about 1.3 times longer to execute, wich amounts to 53 fps, while t||(I=new ImageData... runs at a constant 60 fps (on my old 2014 macbook pro :-))

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neimad

remix of d/19261 by u/somehoax

function u(t) {

for(i=999;i--;x.fillRect(~x.setTransform(s=2e4/i,C(a=-i-t),4,4*s,t-9*s*C(a)+i,t%9+9*s*S(a)),S(t),2,.4))x.fillStyle=R(v=99-S(i/29)*80,v,v*i)

Jun 29 2020 5:53 AM UTC

}// 139/140

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u/magna

It's like surfing a giant wave
u/Joachim

#tunnel

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ntsutae

function u(t) {

c.width|=X=Y=0,x.lineWidth=4
for(s=H=960,t*=z=90;--z;s*=.96){i=z-t
X+=S(r=S(i/59)*3-C(i/71)*2)*7
Y+=C(r)*7
x.arc(H+X,540+Y,s,2,1)}x.stroke()

Jun 15 2020 4:13 PM UTC

}// 140/140

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#tunnel inspiration: https://twitter.com/ntsutae/status/120538845…

u/katkip

smooth

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rodrigo.siqueira

remix of d/15961 by u/keithclark

function u(t) {

for(k=i=1e3;z=--i/8;x.fillRect(k+S(m=k*j^k)*r-z*C(j)*8,440+C(m)*r*(1+C(t*9)/3)+z*4,s=5e3/z,s))j=i/k+t,r=1e4/z,x.fillStyle=R(90+S(j*7)*70)

Nov 29 2019 11:58 AM UTC

}// 137/140

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Hole to Hell #tunnel

u/katkip

what does antman see when travelling in thanos butt

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cagr30

function u(t) {

for(x.fillRect(0,0,2e3,2e3),W=960,j=99;--j;)for(i=16;i--;x.clearRect(W+S(p=.39*i+j/4-6.03*V)/Z*W,540+C(p)/Z*W,s=99/Z,s))Z=j-t*6+(V=(t*6)|0)

Apr 21 2018 7:32 PM UTC

}// 139/140

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u/iverjo

#tunnel

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anthonylewis

remix of d/7718 by u/anthonylewis

function u(t) {

w=c.width^=0
x.globalAlpha=.1
for(i=30;i--;)
Z=w/(i-t%2+1),x.fillRect(960-Z/2,540-Z/2,Z,Z)

Apr 21 2018 1:33 AM UTC

}// 90/140

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u/Agnes

Really classy shades of grey... looks like something you'd see at a museum.
u/BuRRak

This is so satysfing to watch
u/rjro

dat hotline bling dat James Turrell aesthetic
u/BuRRak

This is mindblowing because it is all the same color
u/lionleaf

#tunnel

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hoplite

remix of d/26555 by u/hoplite

function u(t) {

x.fillRect(0,0,i=w=c.width=2e3,w);for(;i--;x.clearRect(S(a)*z+(S(a/9e2)+2)*500,C(a)*z+(S(a/7e2)+2)*250,w/i,w/i))T=t*99,a=i-T%1,z=w*39/a,a+=T

Dec 7 2022 11:19 AM UTC

}// 140/140

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u/UEZ

#tunnel

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stephanegeorget

function u(t) {

h=50
c.width=9*h
for(i=99;i--;)for(j=9;j--;)
x.fillText('⬤',4*h+(l=3*((j+t)%9)**1.5*(9+3*Math.acos(C(i*0.317))))*S(k=i*0.0635),3*h+l*C(k),h)

Nov 8 2021 11:55 PM UTC

}// 140/140

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#tunnel #flower

u/donbright

classic

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