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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.

Try the new frontend: beta.dwitter.net
Current theme challenge: #Food

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danny@hille.dk

function u(t) {

for(c.width|=i=0;i<99;i+=.1){x.lineWidth=6
X=S(9)*i
Y=C(1/i)*i
x.lineTo(X+C(X)+C(X)*799+960,Y+S(X)+S(X+Y-t)*99+440)
}x.stroke()

Aug 29 2020 3:30 PM UTC

}// 127/140

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Not 3D

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katkip

function u(t) {

eval(unescape(escape`𬠽𣑡𭁨𛡲𨑮𩁯𫐻𩠽𚁘𛁙𛁮🐹𞐩🐾𦀪𦀫𦐪𦐾𜠿𫠪𞀺𩠨𤰨𜰪𦀪𦐫𛠹𚐪𦀪𜠮𝀬𤰨𦀪𦀭𦐪𦐫𛠲𚐪𦐪𜰬𫠭𜐩𞱦𫱲𚁩🐹𞐹𞱩𛐭𞰩𦀽𬠨𦐽𬠨𚐪𜑥𜰩𚠱𩐳𛁸𛡦𪑬𫁓𭁹𫁥👠𪁳𫀨𙁻𩠨𦀯𝐰𜀭𜐬𦐯𝐰𜀭𜐩𯐬𞐹𙐬𝐰𙐩𨀬𮀮𩡩𫁬𤡥𨱴𚁘𛁙𛀹𛱴𛀹𛱴𚐻`.replace(/u../g,``)))

Aug 25 2020 1:57 PM UTC

}// 139/140

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another #fractal. thanks to u/13thptr for some golfing <3

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danny@hille.dk

remix of d/19755 by u/danny@hille.dk

function u(t) {

for(m=Math,c.width=X=99;X--;)for(Y=64;Y--;)r=m.hypot(X-50,Y-32),a=m.atan2(X-50,Y-32),g=S(a+S(-r+t*9))*X,x.fillStyle=R(g),x.fillRect(X,Y,1,1)

Aug 22 2020 6:59 PM UTC

}// 140/140

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Ripples

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Xen

remix of d/19719 by u/smtsjhr

function u(t) {

(l=S(t)**2)<.01?b=a=t%6:a=b
for(c.width|=i=0;i++<1e3*l;x.lineTo(960+k*S(i*a),540+k*C(i*a)))k=(2e3+i*C(t*i*t))*.996**i;x.fill('evenodd')

Aug 19 2020 11:37 PM UTC

}// 135/140

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play and golf

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asciislinger

function u(t) {

t||(h=48,v=27);s=Math.random();s>.75&&v<54?v++:s>.5&&v?v--:s>.25&&h<95?h++:h?h--:0;x.fillStyle='rgba(0,0,0,0.3)';x.fillRect(h*20,v*20,16,16)

Aug 19 2020 9:13 AM UTC

}// 140/140

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More better drunkard walk

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veubeke

function u(t) {

c.width^=0
x.font='10em"'
$=Math.PI/4
for(i=4;i--;x.fillText('😀',-80,-180))
x.transform(1,i-1?0:S($),i%2?0:-T($/2),1,i<3?0:980,i<3?200:460)

Aug 5 2020 7:02 AM UTC

}// 139/140

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TIL you can rotate by shearing

u/veubeke

https://twitter.com/Peter_shirley/status/129…
u/Billedluh

Noooooooo I like this too much noooooo

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rodrigo.siqueira

remix of d/19389 by u/rodrigo.siqueira

function u(t) {

c.style.filter=`sepia(`
for(i=5e3;i--;f(480,540,300,t*i))f=(X,Y,s,r)=>s>77?f(X+s*C(r),Y+s*S(r*2),s/2,C(t+i)-r*5):x.fillRect(X*2,Y,t<3,.8)

Aug 5 2020 12:15 AM UTC

}// 137/140

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Symmetric Ribbons I

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taupelink

function u(t) {

for(i=1e3;i--;x.fillRect(X*320,Y*180,Y%C(d=a[X|0])*X%S(e=a[Y|0]),C(d+e*e)*S(e/d)))X=(r=Math.random)()*6,Y=r()*6,a=[p=X*X,X,q=Y*Y,p+q,Y,p-q]

Aug 2 2020 7:00 PM UTC

}// 139/140

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d/19588

u/taupelink

looks like all-grey on iOS...not sure what's going on
u/taupelink

I think it has to do with the fillRect function and fractional widths. I wonder whether tiny widths get rounded up in iOS, filling in blanks that appear on other systems

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katkip

function u(t) {

eval(unescape(escape`𨰮𭱩𩁴𪀪🐱𞰻𪑦𚀡𭀩𦀽𞐶𜀬𦐽𝐴𜀬𭠽𜀬𤠽𜐮𝐷𛰲𞱦𫱲𚁩🐴𞱩𛐭𞰩𮀮𨑲𨰨𦀫𤰨𪐪𜐮𝐷𚱒𚐪𞐹𛀨𦐫👶𚰽𛠲𚐫𠰨𪐪𜐮𝐷𚱒𚐪𞐹𛀰𛀰𛀰𚐻𮀮𩡩𫁬𚀩𞱩𩠨𦐾𜐰𞀰𛐹𞐩𭠪🐭𛠸𚱃𚁶𚐯𞐬𤠫👓𚁶𚐫𜐮𝐷𛰲𞱷𪁩𫁥𚁙🠱𜀸𜀭𞐹𚑙𛐽𛠰𜐠`.replace(/uD./g,'')))*yes

Jul 28 2020 7:23 AM UTC

}// 140/140

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u/donbright

hahaha

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nikoloffgeorgi

function u(t) {

c.width|=a=10
while(a--){x.globalAlpha=a/10+.05
z=400+a*100
o=200
x.fillRect(z+(a*o-z),400+o*S(t+a),o*S(t+a*.2),o)
x.fillRect(a*o,0,o,1080)}

Jul 24 2020 9:30 PM UTC

}// 140/140

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