Top dweets by u/cantelope

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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cantelope

remix of d/2449 by u/cantelope

function u(t) {

x.globalAlpha=.1
x.fillRect(0,0,(w=960)*2,w*2)
for(i=99;i--;p=.2*i+t,x.clearRect(w+1/(Z=3+C(p))*(i-50)*w/20,540+S(p)/Z*w,s=199/(Z*Z),s));

Apr 9 2017 2:07 AM UTC

}// 137/140

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u/donbright

wow
u/magna

I love this series.
u/magna

Golfed down by 5 characters: https://www.dwitter.net/d/2454
u/lionleaf

#perspective #spiral

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cantelope

remix of d/2359 by u/Jenky

function u(t) {

x.globalAlpha=.1
x.fillRect(0,0,i=w=2e3,w)
if(!t)for(p=[];w--;)p.push([w*9%i,w])
p.map(v=>{v[0]+=C(t+=.2),v[1]-=S(t),x.clearRect(...v,9,9)})

Apr 1 2017 7:36 AM UTC

}// 140/140

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Experimenting with map. Might need more practice heh.

u/sigveseb

Nice style
u/donbright

love the fade

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cantelope

function u(t) {

x.fillRect(0,0,2e3,2e3);for(i=5e3;i--;Z=130-(t*40+i)%130,s=280/Z,x.clearRect(960+1/Z*(-99+i*6e72%199)*700,540+(-70+i*8e61%140)/Z*700,s,s));

Mar 29 2017 6:05 AM UTC

}// 139/140

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u/aemkei

Whaa, this is the best starfield here, so far! Good job!
u/cantelope

Thanks aemkei! I see a couple missed opportunities tho. might try again. :)
u/tapgiles

That takes me back to... around 1995. ^^
u/cantelope

#starfield #stars

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cantelope

function u(t) {

x.save(),x.translate(960,540);for(i=99;i--;a=i*10,x.fillStyle=`hsl(${i*4-t*99},99%,50%`,x.fillRect(-a,-a,a*2,a*2),x.rotate(.02));x.restore()

Mar 28 2017 4:27 AM UTC

}// 140/140

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some color to brighten up the place

u/nonce

love it, I have been playing with tunnels that you are backing out of all day it is refreshing to see on go the other way
u/sfz

Wow, you get some cool patterns if you change the .02 to .1 thru .9
u/donbright

beautiful

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cantelope

remix of d/34248 by u/rodrigo.siqueira

function u(t) {

for(x.fillRect(0,0,i=1e4,i);i--;x.clearRect(960+S(l+=t)/S(q=i%2<.5?n:4-n)/(Z=C(l)/S(q)+2)*(h=540),h+C(q)/Z*h,s=Z>0?4+6/Z:0,s))n=(l=i**.9)%2

Aug 29 2025 5:34 PM UTC

}// 139/140

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note: when Z is negative, the thing is behind the 'camera' and should be omitted, unless you're doing a 360° equirectangular thing... this remix omits the rear activity which would appear as particles going in the wrong direction

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cantelope

function u(t) {

eval(unescape(escape`𩡯𬠨𮀮𩱬𫱢𨑬𠑬𬁨𨐽𛠲𛁸𛡦𪑬𫁒𩑣𭀨𜀬𜀬𪐽𜑥𝀬𪐩𞱩𛐭𞱸𛡣𫁥𨑲𤡥𨱴𚀹𝠰𚱓𚁬𚰽𭀯𝀩𚡓𚁱👩𙐲🀮𝐿𫠺𜰮𜠭𫠩𚠨𫐽𜐫𤰨𬐪𞀫𭀪𝀫𫀪𜰩𛰸𚐯𚁚👃𚁬𚐪𤰨𬐩𚰱𛠶𚐪𚁨🐵𝀰𚐬𪀫𠰨𬐩𚡭𛱚𚡨𛁳🐮𝐫𜠯𦠬𬰩𚑮🐨𚁬👩𚠪𛠹𚐥𜐩𚠪𛠵𚠱𛠶`.replace(/u../g,'')))

Aug 23 2025 12:45 AM UTC

}// 139/140

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u/magna

Sexy!

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cantelope

function u(t) {

eval(unescape(escape`𩡯𬠨𮀮𩱬𫱢𨑬𠑬𬁨𨐽𛠱𛁸𛡦𪑬𫁒𩑣𭀨𜀬𜀬𪐽𜑥𝀬𪐩𞱩𛐭𞱸𛡣𫁥𨑲𤡥𨱴𚀹𝠰𚱓𚁬𚰽𭀯𞀩𚡓𚁱👩𙐲🀮𝐿𫠺𜰮𜠭𫠩𚠨𫐽𜐫𤰨𬐪𞀫𭀫𫀪𜰩𛰸𚐯𚁚👃𚁬𚐪𤰨𬐩𚰱𚐪𚁨🐵𝀰𚐬𪀫𠰨𬐩𚡭𛱚𚡨𛁳🐵𛰨𛠱𚱚𚐬𬰩𚑮🐨𚁬👩𚠪𛠹𚐥𜐩𚠪𛠵𚠱𛠶`.replace(/u../g,'')))

Aug 23 2025 12:43 AM UTC

}// 138/140

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cantelope

function u(t) {

for(x.fillRect(0,0,i=2e4,i);i--;x.clearRect(960+S(l+=t)*S(q=i%2<.5?n:3.2-n)/(Z=C(l)*S(q)+1)*(h=540),h+C(q)/Z*h,4,4))n=((l=i**.9)%1)**.5*1.6

Aug 22 2025 6:00 PM UTC

}// 139/140

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no Math.random

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cantelope

function u(t) {

eval(unescape(escape`𩡯𬠨𮀮𩡩𫁬𤡥𨱴𚀰𛀰𛁩🐳𩐴𛁩𚐻𪐭𛐻𮀮𨱬𩑡𬡒𩑣𭀨𪐥𞐪𚁨🐲𝐰𚐫𦀯𚁚👃𚁰𚐪𩀫𞐩𚡨𛀨𪐥𝐫𦐯𦠩𚡨𛀴𛀴𚐩𦀽𤰨𬀽𚁁👍𨑴𪀮𨑴𨑮𜠩𚁘👓𚁩𚐭𜰬𜀩𚱩𚡩𚐪𚁤🐨𢀽𣑡𭁨𛡨𮑰𫱴𚐨𦀬𜀩𚐬𦐽𤰨𬀽𠐨𦐽𠰨𪐩𛁚👃𚁰𚐪𩀩𚱴𚱩𙐹𚐪𚁤👈𚁙𛁚𚐩`.replace(/u../g,'')))

Oct 13 2024 11:13 PM UTC

}// 140/140

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torus 4

Show more comments…
u/lewdev

These donut things are great but are so slow on my computer. Anyone else have this problem?
u/cantelope

lewdev, there's known performance glitches with canvas in Firefox on Linux. Guessing that's your stack. Try Chromium?
u/tomxor

I actually always found Firefox canvas way faster than chrome, on Linux at least. Including this one, 30 FPS in chrome, but 60 FPS in Firefox, I got a new laptop this year so probably even slower in chrome on older computers.
u/tomxor

@cantelope You might be thinking of the subpixel aliasing issue on Firefox that appeared when they flipped hardware rendering on by default. That affected a lot of dweet rendering, I reported it a while back and it's been fixed in release since v128
u/cantelope

whatever causes the firefox+canvas+linux thing, somehow i always correctly guess the stack... whatever that means
u/lewdev

I was on win11 on my laptop, but it was slow on both Chrome & Firefox. It's smooth on my desktop Win11, which is much more powerful.
u/cantelope

well there you have it, bunk lappy

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cantelope

function u(t) {

eval(unescape(escape`𩡯𬠨𪐽𨰮𭱩𩁴𪁼👨🐵𝀰𞱩𛐭𞱸𛡦𪑬𫁒𩑣𭀨𞐶𜀫𤰨𬐩𚡬𛰨𦠽𠰨𬀩𚡤𚰲𚐪𪀭𚁳👬𚠸𛱚𛱮𚐯𜠬𪀫𦐯𦠪𪀭𬰯𜠬𬰬𬰩𚑙👓𚁰🐨𣐽𣑡𭁨𚐮𨑴𨑮𜠨𦐽𠰨𬐽𪐯𝰷𚱴𚠹𚐪𚁬👩𛰱𝐰𜀩𛁚🐱𛑬𚐫𭀩𚠨𩀽𣐮𪁹𬁯𭀨𦐬𦠩𚐬𮀮𩱬𫱢𨑬𠑬𬁨𨐽𫠽𪐥𜠿𛠰𝐺𛠲`.replace(/u../g,'')))

Sep 25 2024 10:09 PM UTC

}// 140/140

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spiral

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