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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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Cloud

remix of d/17628 by u/Cloud

function u(t) {

c.style.filter=`blur(9px)contrast(90)`
for(c.width|=i=9;i--;)
x.arc(960+300*S(t+i),490+300*C(t+i/.6),150,0,6),x.fill()

Feb 18 2020 12:36 PM UTC

}// 118/140

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#blackmatery

u/aleamb

amazing! very #organic
u/13thptr

#metaballs
u/vain

nice blur trick to get this amazing blob like effect

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Layl

function u(t) {

s=";x.bezierCurveTo(q,q,q,o,(i-6)*(C(t*i/9)*q),S(t)*o/i);";eval("q=250;o=150;c.width=q*2;for(i=1;i<9;++i){"+s+s+"x.moveTo(q,q)}x.stroke()")

Feb 17 2020 11:09 PM UTC

}// 139/140

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Plant #growth

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rodrigo.siqueira

remix of d/17654 by u/Cloud

function u(t) {

c.style.filter=`sepia()`
x.lineWidth=.03
for(i=4;i--;)p=1.6,a=i*p,b=a+C(t*2-p)/p,r=250*t,x.lineTo(S(b)*r+t*50,C(b)*r+540+S(t)*99),x.stroke()

Feb 17 2020 5:12 PM UTC

}// 140/140

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Painted with a square

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andrea270872

function u(t) {

c.width|=A=[]
x.strokeStyle='#911'
x.lineWidth=420
for(i=40;i-->0;)A.push(i+9-t%9,i*t%9)
x.stroke(new Path2D('M150,250 l'+A+'M100,700 l'+A))

Feb 16 2020 3:04 PM UTC

}// 140/140

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Bacon experiments (think of "sizzling" sounds...)

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andrea270872

remix of d/17635 by u/andrea270872

function u(t) {

c.width|=K=130
for(j=77;j-->0;){A=[];T=(t/j)%3
for(i=9;i-->0;)A.push(K+j%13*K+C(i/T)*49,K+~~(j/13)*K+S(i/T)*49)
x.stroke(new Path2D('M'+A))}

Feb 15 2020 5:22 PM UTC

}// 140/140

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Cleaner geometries

Show more comments…
u/andrea270872

#waitForIt
u/DataMeta

#waitforit :)
u/DataMeta

Oh huh, it resolves as the same tag, TIL
u/andrea270872

thanks :)
u/bandaloo

does the >0 at the end of j-- and i-- do anything? when j reaches zero it's falsey anyways
u/bandaloo

i should also say this is really beautiful
u/andrea270872

good point Bandaloo. Thanks

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Yogeshp3

remix of d/6945 by u/Yogeshp3

function u(t) {

c.style.filter="blur(1vh)sepia()invert(1";c.width|=0,a=[20,9,32,26,14,2,3]
for(i=0;i<7;)x.fillRect(500+i*160,799,50,-320+10*a[i++]*S(i*2*t))

Feb 12 2020 6:49 PM UTC

}// 140/140

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u/Xen

nice! would look good as default

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Yogeshp3

remix of d/17561 by u/pavel

function u(t) {

c.style.filter="blur(1vh)invert(1";for(c.width|=j=21,x.scale(9,9);j--;)for(i=99;i--;)x.arc(0,0,1.3**(j+i%2+t%2),a=(i+j)%24/4,a);x.stroke()

Feb 12 2020 6:38 PM UTC

}// 138/140

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u/KilledByAPixel

🕷️

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New_Core

remix of d/17584 by u/New_Core

function u(t) {

c.style.filter=`blur(60px)contrast(2e3)`
for(i=11;i--;x.fillRect(960+600*S(t+i),440+400*C(t+i*.6),200,200))x.fillStyle=`hsl(${i*t},99%,50%)`

Feb 12 2020 5:28 PM UTC

}// 140/140

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color experiment

u/Xen

Goes nice to most Deeprot ;-)
u/andrea270872

cool, looks like a lava lamp!
u/DataMeta

Ooh neat! #waitforit

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KilledByAPixel

remix of d/17561 by u/pavel

function u(t) {

eval(unescape(escape`𨰮𬱴𮑬𩐮𩡩𫁴𩑲🐢𨡬𭑲𚀱𭡨𚑳𩑰𪑡𚀩𪑮𭡥𬡴𚀱𘠻𭱩𭁨𚁸𚑦𫱲𚁣𛡷𪑤𭁨𯀽𪠽𜠱𛁬𪑮𩑗𪑤𭁨🐲𛁳𨱡𫁥𚀵𛀵𚐻𪠭𛐻𚑦𫱲𚁩🐲𝠻𪐭𛐻𫁩𫡥𢡯𪑮🐢𬡯𭑮𩀢𚑡𬡣𚀱𞐲𛀱𜀸𛀱𛠳𚠪𚁲👪𚱩𙐲𚱴𙐲𚐬𨐽𚁩𚱪𚐥𜠴𛰳𛠸𜐹𝰫𠰨𬠩𛰲𛁡𚐻𮀮𬱴𬡯𪱥𚀩`.replace(/u../g,'')))

Feb 11 2020 8:11 AM UTC

}// 140/140

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jylikangas treatment ;)

u/jylikangas

I was so happy to come up with that trick but even happier now to see it repeated. I found it when I wanted to emulate the appearance of a Vectrex console.
u/KilledByAPixel

the best tricks are often the simplest

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bandaloo

function u(t) {

d=2e3
if (t<1) x.fillRect(0,0,d,t*d)
else {x.fillText(t,(Math.floor(t)*99)%d-99,(t*d)%d)
x.fillStyle=R(0,1e3)}

Feb 7 2020 5:19 AM UTC

}// 110/140

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readout

u/Xen

nice