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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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rodrigo.siqueira

remix of d/28864 by u/rodrigo.siqueira

function u(t) {

eval(unescape(escape`󨼮󬽴󮝬󩜽󨍦󪝬󭍥󬬺󪝮󭭥󬭴󚌩󨌊󨼽󦼵󜌰󛌰󛌰󛍡󟝢󟜸󜌰󛌱󩜳󛍢󧜻󩭯󬬨󪜽󨜻󪜭󛜻󮌮󩭩󫍬󤭥󨽴󚍘󟝢󚬲󚽢󚭃󚍩󚭩󚜯󭌯󞜬󝜴󜌭󤼨󪜩󚭡󛽩󛽴󛽴󛜵󜌪󠼨󦌯󞌫󠼨󦌯󝬰󚜪󞜩󛍋󟜱󚼮󜜯󭌬󢼪󚍴󟌳󚜩󚝦󟝾󯬨󤼨󪜪󪜪󭌩󚬪󜬪󜬩󛍡󟝣󦽦󧜫󨜯󜬬󨬽󨽛󩬪󜭝󚽢󛼲`.replace(/u../g,'')))

Nov 17 2023 1:32 AM UTC

}// 139/140

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Cosmic wave patterns

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rodrigo.siqueira

remix of d/28831 by u/rodrigo.siqueira

function u(t) {

for(X=Y=t,i=7e4;i--;x.fillRect(X*120+400,Y*139+660-X*30,.3,t<4))
Y=(r=i/Y&2)*5+Y/2+S(X/3)/2+S(Y/3)/5-X,
X+=Y,x.fillStyle=R(r*80)

Nov 10 2023 10:05 PM UTC

}// 128/140

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Redland

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taupelink

remix of d/28789 by u/taupelink

function u(t) {

eval(unescape(escape`󬌽󣝡󭍨󛭐󢜻󩭯󬬨󪜽󝬰󜌻󪜭󛜻󮌮󩭩󫍬󤭥󨽴󚍘󚬶󜜰󛝷󛍙󚬳󜼰󛝷󛍷󚬲󛍷󚬹󚭃󚍙󚭩󚜩󚝘󟝩󙝰󛍙󟝘󚭩󙝰󛍸󛭦󪝬󫍓󭍹󫍥󟝠󪍳󫌨󙍻󪌽󜼹󜌫󝜪󦜪󤼨󦜩󚬪󜼪󤼨󞌪󦌫󭌪󚬮󝜩󯜬󙍻󝜰󚽓󚍨󛼽󜜲󚽴󛼸󚜪󪍽󙜬󙍻󝬵󛝨󚭃󚍘󛼳󚽨󚝽󙜬󙍻󭼽󭌯󭌪󚭴󛼶󯜩󨌬󭼪󟝩`.replace(/u../g,'')))

Nov 7 2023 4:46 AM UTC

}// 139/140

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d/28822

u/magna

Acrylic on canvas

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sissinnguaq

remix of d/28793 by u/AArt1256

function u(t) {

for(X=Y=t,i=1e3;i--;Y=(i/Y&&1)+(Y-X)*.99,X+=Y)x.fillRect(X*95+850,Y*106+550,.9/t,t/-4);c.style.filter='invert()'

Nov 6 2023 1:45 PM UTC

}// 112/140

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u/magna

Pretty!

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rodrigo.siqueira

remix of d/28792 by u/rodrigo.siqueira

function u(t) {

A=X=Y=c.width|=0
K=1.2+t%1.3
s=200*K**3
for(i=1e4;--i;){
 r=Math.random()>.5?0:1
 X=r-Y/3
 Y=A
 A=X
 x.fillRect(800+X*s,410+Y*s,4,4)
}

Nov 5 2023 2:07 PM UTC

}// 134/140

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Infinite zoom squares.

u/rodrigo.siqueira

Just an idea. I think this can be improved to achieve smoother zooming with better timing.

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baon

function u(t) {

y=Math.PI/3;b=0;t?0:f=h=i=g=250;
while(b++<50&f<15e3){++f;for(e=4,z=2;z<3e3;z*=4)f%z==z/2?e=1:0;
i+=e;x.fillRect(g+=C(y*i),h-=S(y*i),2,2)}

Nov 5 2023 8:57 AM UTC

}// 138/140

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u/baon

remake from: https://www.dwitter.net/d/6095
u/baon

#snowflake

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rodrigo.siqueira

remix of d/28757 by u/rodrigo.siqueira

function u(t) {

for(a=b=t,i=8e4;i--;a+=(r=i/b&i%2)*3.4-b*S(a*2.1)/8-a*a/4.21,b=b/1.3-C(a*3))x.fillRect(b*600+1600,2400-a*3000+b*330,.1,t<2)

Oct 30 2023 2:26 PM UTC

}// 123/140

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Fractal dome #spiral

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vain

function u(t) {

//njoy live, njoy dwitter
for(i=c.width=192;i--;)for(j=108;j--;)x.fillRect(i,j,t/2*i*j%4,1)
x.fillStyle='#afa',x.fillText("ᕲώι𝓽𝓽𝑒r 𝐓v",9,15)

Oct 21 2024 4:39 PM UTC

}// 140/140

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[vn-08] Distorted TV-Signal - by va!n

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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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HardlyProductive

function u(t) {

f=(a,b)=>{for(i=2e3;i--;)x.fillRect(-100+j*200+75*C(a/b*i)*C(i),-100+k*200+75*S(a/b*i)*C(i),2,2)}
for(j=10;j--;){for(k=6;k--;)f(k,j)}

Oct 11 2024 2:35 PM UTC

}// 134/140

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Roses <3 https://en.wikipedia.org/wiki/Rose_(mathemat…

u/cantelope

#spirograph