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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jick

function u(t) {

c.width=300;for(i=300;i-=3;)for(j=240;j-=3;) {a=S(i/(90*C(t*20)))+C(j/(90*C(t*20)));x.fillStyle=`hsl(${a*99},40%,50%)`;x.fillRect(i,j,3,3);}

Apr 26 2020 11:56 PM UTC

}// 140/140

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Freakin' out, man.

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KilledByAPixel

remix of d/33572 by u/KilledByAPixel

function u(t) {

x.fillStyle=t&1?'#fff':R()
for(i=40;i--;x.drawImage(c,X=i*55-T,Y=j%2e3-T,T,T,X+.5+S(j*j)|0,Y+j%3,T,T=700))x.fillRect(i,0,j=i**3.3+t|0,1)

Apr 27 2025 4:00 PM UTC

}// 136/140

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Mini Melter

u/joeytwiddle

I feel like I pressed a very wrong button!

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veubeke

function u(t) {

c.width^=0
for(x.transform(80,i=9,0,80,960,540);i--;x.fill(new Path2D(`M-1-5q${D=C(t/2)+1} 1,2 0q ${D-2}-1,-2 0`)))x.rotate(i-8?.7:S(t/2)*6)

Nov 15 2019 9:36 AM UTC

}// 140/140

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u/Xen

smoooth
u/DataMeta

Mmm niice
u/michaelplzno

impressive!
u/katkip

#path2d

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rep_movsd

function u(t) {

eval(unescape(escape`𩠽𪰽🡛𦀪𪱛𜁝𚱙𚡫𦰱𧐬𦀪𪱛𜡝𚰨𦐫𜰩𚡫𦰳𧑝𒡘👙🐰𛁪👩🐶𜰻𭱨𪑬𩐨𪐭𛐩𮀮𩡩𫁬𤡥𨱴𚁘𚡪𚰵𜀰𛁙𚡪𛀲𛀲𚐬𦱘𛁙𧐽𩠨𦰮𛠮𘠿🰿𢑴𠐼𭁋𛡍𣀵𤁏𣠢𧐮𫑡𬀨𮀽🡸𛡣𪁡𬡃𫱤𩑁𭀨𚐯𪠭𜐩𛡳𫁩𨱥𚀴𚠨𚁺👃𚁴𚠪𪐩𚐼𛐮𞐿𜀺𮠼𛠷🰱𞡺🀮𞐿𜠺𜰩𚐩`.replace(/u../g,'')))

Sep 22 2020 11:27 PM UTC

}// 140/140

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IFS Fern

u/rep_movsd

#fractal #ifs #fern #nature

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alien

remix of d/2835 by u/alien

function u(t) {

w=c.width=180
f=frame
for(j=0;j<w;j++)
for(i=0;i<w;i++){
q=i*i+j*j
s=i*C(q)+(f%2)
s%=255
x.fillStyle=R(s*2,s*2,s*3)
x.fillRect(i,j,1,1)
}

Jul 6 2017 8:09 PM UTC

}// 140/140

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u/sigveseb

This is the prettiest dweet I've seen in a long time :)
u/alien

oh thank you :D
u/donbright

great colors

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geb

remix of d/10320 by u/veubeke

function u(t) {

c.width^=t
for(i=190;i--;)with(x)restore(save(),translate(120*(i/11|0),i%11*120),rotate((S(t)/2+i%2)*t),fillRect(-80+t,-80+t,80+t,80+t))

Oct 11 2018 10:14 PM UTC

}// 136/140

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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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Niklas

function u(t) {

r=Math.random,!t&&(p={x:960,y:540,c:0,d:0}),p.c+=2*r()-1,p.d+=2*r()-1,p.c*=.9,p.d*=.9,p.x+=p.c,p.y+=p.d,x.fillRect(p.x,p.y,3,3);

Feb 24 2017 4:23 PM UTC

}// 128/140

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Brownian molecular motion

u/danni

This resembles my signature when the UPS guy visits.

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taupelink

remix of d/25320 by u/taupelink

function u(t) {

for(m=t?0:2e4;m-->2e3;x.fillRect(m**.5%20*96+8*X,m%14*80+5*Y,q,i))i=m%349,X=6+6*S(m),Y=8+8*S(m*m),x.fillStyle=R(q=C(Y+m)*i,m/X/i,i/Y,i/X/m)

Apr 17 2022 4:52 AM UTC

}// 139/140

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d/25334

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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