New #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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Current theme challenge: #ScaryMovies

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rodrigo.siqueira

remix of d/20182 by u/danny@hille.dk

function u(t) {

with(x)for(fillRect(0,0,w=2e3,i=w);i--;strokeRect(960-i/2-i*C(t),540-i/2,i*2,i))setLineDash([i]),strokeStyle=R(lineDashOffset=w+(5*t%2*i),w)

Aug 12 2023 11:27 PM UTC

}// 140/140

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Square Spiral #Tunnel

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rodrigo.siqueira

remix of d/27925 by u/KilledByAPixel

function u(t) {

c.width=355
for(i=w=127;i--;)for(j=200;j--;)x.fillRect(i+114,j,1,((w*(C(a=Math.atan2(X=i/w-.5,Y=j/w-.8))/Y/6+t)^w*(S(X+Y)/Y/6))&w)/w*C(a/t))

Jun 6 2023 3:16 PM UTC

}// 140/140

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The Tunnel #tunnel

u/tomxor

For some reason this reminds me of those weird halfpipe levels on sonic2 on the megadrive https://youtu.be/8cr1rqVcIhA?t=484

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rodrigo.siqueira

remix of d/27866 by u/@noel

function u(t) {

for(w=j=241;j--;)for(i=y=j/w;i<w;i++)k=2*i/w-1,d=k*k+y*y,z=w*C(k)/d+t*w^(w*S(k)/d+t*w),x.fillStyle=R(z&w,0,9/d),x.fillRect(i*8-8,j*4.5,8,4)

Jun 1 2023 7:36 PM UTC

}// 139/140

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Rotating #tunnel

u/deobfuscate

A light to the dweetverse.
u/Joachim

u/@noel you're able to delete comments on beta.dwitter.net if you log in :)
u/@noel

u/Joachim Thanks. I didn't notice that I wasn't logged in.

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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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mxfh

remix of d/24011 by u/KilledByAPixel

function u(t) {

for(w=710,r=113,τ=w/r,c.width|=i=0;i<w;i+=τ/3+S(t)/20)x.arc(w,w,i**(-.7+T(t)/9)*1e4,a=i+t,a+τ/4)
x.stroke()

Oct 7 2021 4:10 PM UTC

}// 107/140

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#tunnel #cavern

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danny@hille.dk

remix of d/23599 by u/danny@hille.dk

function u(t) {

c.width=w=92;for(i=6e3;i--;x.fillRect(m,i/w|0,o=((w/(Y*Y+X*X)**.5+t*w*5&w^w*a*2+w+t*w&w))/w,.7/o))a=Math.atan2(X=-.5+(m=i%w)/w,Y=-.4+i/7e3)

Sep 2 2021 3:45 PM UTC

}// 139/140

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uncompressed tunnel remix

u/tomxor

Interesting an-anisitropic event horizon in the middle :P
u/danny@hille.dk

:P I couldn't fit the code to darken by depth...
u/danny@hille.dk

heres another interesting rendition c.width=w=127;for(i=1e4;i--;x.fillRect(m,i/w|0,o=((w/(Y*Y+X*X)**.5+t*w&w^w*a+w-t/5*w&w))/w,.5/o))a=Math.atan2(X=-.5+(m=i%w)/w,Y=-i/-9e3)
u/danny@hille.dk

#tunnel

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Joachim

function u(t) {

eval(unescape(escape`󘝴󟽰󟝛󧜺󬌮󭝮󬽨󪝦󭌨󮽸󞬹󝬰󚽓󚍴󚜪󞜹󛍹󞬵󝌰󚽃󚍴󚜪󝜰󛍳󞬱󛍣󞭒󚍓󚍴󚬹󚜪󜜵󜌬󥌨󭌪󞜩󚬸󜌬󜌩󯜩󒭦󫽲󚍩󘍯󩬠󬌩󮽩󛭳󟬱󞜹󞜿󬌮󬍯󬌨󚜺󮌮󫍩󫭥󥽩󩍴󪌽󪜮󬼯󞜊󮌮󬽴󬭯󪽥󤽴󮝬󩜽󪜮󨼊󮌮󬽴󬭯󪽥󤭥󨽴󚍩󛭸󛝩󛭳󛼲󛍩󛭹󛝩󛭳󛼲󛍩󛭳󚬽󜜮󜌳󛍩󛭳󚝽`.replace(/u../g,'')))

Aug 24 2021 1:37 PM UTC

}// 140/140

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#Tunnel Of Power

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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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danny@hille.dk

function u(t) {

eval(unescape(escape`𨰮𭱩𩁴𪀽𭰽𜠵𝐻𩡯𬠨𪐽𜀬𩰽𭰪𭰬𬰽𮀮𩱥𭁉𫑡𩱥𡁡𭁡𚀰𛀰𛁷𛁷𚐻𩰭𛐻𚁰👳𛡤𨑴𨐩𦱩𚰽𝁝👷𛰨𝠪𚁘𚡘𚱙𚡙𚐪𚠮𝐫𜰪𦀩𚱴𚡷𙡷𧠨𭰪𨐪𛠹𝐵𚐭𭀪𭰦𭰬𬁛𪐭𜑝👷𚑡👍𨑴𪀮𨑴𨑮𜠨𦀽𛐱𚰲𚠨𩰥𭰩𛱷𛁙🐭𜐫𜠪𩰯𞑥𝀩𞱸𛡰𭑴𢑭𨑧𩑄𨑴𨐨𬰬𜀬𜀩`.replace(/u../g,'')))

Aug 2 2021 6:16 PM UTC

}// 140/140

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#tunnel

dwitter.net | #Tunnel