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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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katkip

function u(t) {

if(20/t>6.5)x.font=`${20/t}cm"`;x.fillStyle=R(255-255/t,0,t*99),x.fillText(...z=["🚀be prepared",99-99/t,590]),x.strokeText(...z)

Jan 9 2020 8:22 PM UTC

}// 128/140

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u/13thptr

for ?
u/katkip

war

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Whimpers

function u(t) {

for(i=0;i<10;i++){x.lineTo(900+i*100*S(t*S(t)),500+i*100*C(t),5,5);x.stroke();}

Jan 9 2020 4:58 PM UTC

}// 79/140

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hotdogninja76

function u(t) {

eval(unescape(escape`稽㌵〻挮睩摴桼㴰㭴㼱㩷㴰㬡琿堽嬰ⰰⰰ崺ㄻ景爨椽〻椼㌻椫⬩筹㵘孩崫㵍慴栮牡湤潭⠩㰮ㄿ㤺〻砮景湴㵺⬢灸⁰∻砮晩汬呥硴⡷⵩㼢伢㨢伡∬礬稫椪稩㭩昨社挮睩摴栭稩筷㵩㭘㵛〬〬そ絽`.replace(/u(..)/g,"$1%")))

Jan 8 2020 6:47 PM UTC

}// 132/140

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Horse Racing!

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gambit

function u(t) {

c.width=1920 
for(i=0;i<100;i++)
{x.fillStyle=R(C(t)*200,C(i)*200,S(i)*200)
x.fillRect(960+200*C(t+i),540+200*S(t+i),25*C(i),25*S(t))
}

Jan 8 2020 9:02 AM UTC

}// 135/140

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my first

u/Odog8

Welcome! and congrats, thats a nice first

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KilledByAPixel

remix of d/16850 by u/KilledByAPixel

function u(t) {

eval(unescape(escape`𭱩𭁨𚁸𚑦𫱲𚁣𛡷𪑤𭁨𯀽𥀽𞐶𜀬𭁲𨑮𬱬𨑴𩐨𥀬𝐴𜀩𞱔𛐭𞱲𩑳𭁯𬡥𚁦𪑬𫁒𩑣𭀨𪠪𤰨𪠫𭀩𛁪𚡓𚁪𚡪𚱴𚐬𪠬𪠩𚐩𬱡𭡥𚁳𨱡𫁥𚀱𛀭𜐩𚐬𬡯𭁡𭁥𚀨𥀫𥀥𜠩𚠮𜐹𝠳𝐩𛁣𫁩𬀨𫡥𭰠𤁡𭁨𜡄𚀧𫐰𘀰𭠲𩐳𪀴𜀰𙰩𚐬𩡩𫁬𤱴𮑬𩐽𙰣𜠧𚰨𪠽𚁔🠾𝐩𚠲𞐩`.replace(/u../g,'')))

Jan 8 2020 4:48 AM UTC

}// 139/140

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Kaleidoscope #5

u/KilledByAPixel

#Kaleidoscope

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Xen

remix of d/17089 by u/rodrigo.siqueira

function u(t) {

for(i=1e3;i--;x.strokeStyle=`hsl(${i^t*i},75%,30%,.3`,x.stroke())x.beginPath(),x.arc(960+i*C(A=t*3*T(t/i*i)),540+i*S(A),i/7,0,7)

Jan 7 2020 4:21 PM UTC

}// 128/140

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#waitforit #Xweet

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Odog8

remix of d/17079 by u/Odog8

function u(t) {

d=2*C(t)**2;c.width=900;for(b=0;b<70;b+=.02)l=[100*S(4.01*b/3+t)*S(b),b],l=[l[0]*C(l[1]),l[0]*S(l[1])],x.fillRect(l[0]+450,l[1]+230,d,d)

Jan 6 2020 2:13 AM UTC

}// 136/140

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fading le ribbon

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Odog8

function u(t) {

c.width=1920;for(b=0;b<40;b+=0.02)l=[3*S(4.01*b/3+t)*S(b),b],l=[l[0]*C(l[1]),l[0]*S(l[1])],x.fillRect(100*l[0]+960,100*l[1]+540,6,6)

Jan 6 2020 1:30 AM UTC

}// 132/140

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le ribbon

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robotman_

function u(t) {

c.width^=0
for(i=0;i<314;i++)x.fillStyle=`hsl(${i},99%,50%`,x.fillRect(960+S(u=t-i/50)*(a=400+50*S(t*3+i)),540+C(u)*a,15,15)

Jan 5 2020 7:30 PM UTC

}// 124/140

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Circular Spiral (I don't know what happened)

u/pavel

http://mathworld.wolfram.com/Torus.html
u/pavel

Look at the parametric equations

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Jezza

remix of d/17064 by u/Jezza

function u(t) {

for(i=23;i<100;i+=Math.PI/11.75) {
 x.beginPath();
 x.ellipse(960+C(i)*i*4,540+S(i)*i*4,i**0.5*2.2,i**0.5*2.2,0,0,2*Math.PI)
 x.fill();
}

Jan 4 2020 2:17 AM UTC

}// 138/140

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https://www.reddit.com/r/askmath/comments/ej…