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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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BuRRak

function u(t) {

eval(unescape(escape`漽季㴢≝㭲㵁牲慹⠹㤩⹦楬氨椽〩㭦潲⡪⁯映焩挫㴢牛楝⬫㬬牛楝ⴭ㬬睨楬攨牛楝⥻ⱽⱩ⬫㬬椭ⴻⱯ⹰畳栨牛楝⤻∮獰汩瑠Ⱡ嬢⬭孝㸼⸢⹩湤數佦⡪⥝㭥癡氨挩㭴桲潷⁓瑲楮朮晲潭䍨慲䍯摥⠮⸮漩`.replace(/u(..)/g,"$1%",q='')))

May 10 2021 9:50 PM UTC

}// 139/140

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Brainfuck interpreter, code goes inside the q variable. Everything but input is supported.

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andrea270872

function u(t) {

eval(unescape(escape`𨰮𭱩𩁴𪁼👁🐮𜰯𠰨𭀥𞐯𞐩𒡸𛡴𬡡𫡳𫁡𭁥𚀱𩐳𚱃𚁴𚐪𝀰𜀬𝠵𜀫𤰨𭀩𚠱𞀰𚐊𮀮𩡩𫁬𤱴𮑬𩐽𘠣𠑁𠰳𘠊𩡯𬠨𪐽𞀲𞱩𛐭𞱸𛡴𬡡𫡳𩡯𬡭𚁃𚁁𚐫𛠱𛁓𚁁𚐬𛑓𚁁𚐬𠰨𠐩𛀰𛀰𚐩𮀮𩡩𫁬𤡥𨱴𚀰𛀰𛀹𛀹𚐠`.replace(/u../g,'')))

May 10 2021 9:39 PM UTC

}// 121/140

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#seashell floating in the sea

u/andrea270872

c.width|=A=.3/C(t%9/9) x.translate(1e3+C(t)*400,650+S(t)*180) x.fillStyle="#AAC3" for(i=82;i--;x.transform(C(A)+.1,S(A),-S(A),C(A),0,0))x.fillRect(0,0,9,9)

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TGY

function u(t) {

for(i=1,c.width=200,x.lineWidth=9;i<7;i+=.3)x.strokeStyle=R(i*9,i*30,i*30),x.strokeRect(71-2*i,i*(C(i*t)**2+2),56+i*4,56+i*4)

May 8 2021 9:24 AM UTC

}// 125/140

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Those waves are so sick!

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taupelink

remix of d/22662 by u/taupelink

function u(t) {

for(i=g=200;i--;x.fillRect(X,Y,-e*e*(d=.1**(2*t+1)),-e*i*d))f=g*i*t,e=f*f%g,X=e*f%3e3,Y=X*f%2e3,x.fillStyle=R(e,e*.7,Y%1*(X%2)*i^e/2,i/e/g)

May 5 2021 4:55 AM UTC

}// 139/140

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d/22713

u/rep_movsd

#wood #steamedbeech

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taupelink

remix of d/22696 by u/taupelink

function u(t) {

x.globalCompositeOperation='darken';for(i=150;--i;x.fillRect(e*f%2e3,t*e,h/b,e))f=997*i*t,x.fillStyle=R(e=(b=t**t)**(f*f%(9-t)),b*i,h=2e4/e)

May 3 2021 4:48 AM UTC

}// 140/140

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d/22701

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taupelink

remix of d/22671 by u/taupelink

function u(t) {

x.globalCompositeOperation='darken';for(i=250;i--;x.fillRect(e*f%2e3,t*e,6*i/b,e/b))f=997*i*t,x.fillStyle=R(e=(b=t+1)**(f*f%8),3*b*i,6e4/e)

May 1 2021 5:04 PM UTC

}// 139/140

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d/22691

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Pascal

function u(t) {

for(i=w=960;i--;x.fillRect(w+w*(S(i+t)+S(a=t+i/3))/2,w+(C(a)+C(a-t)*T(a)-2)/5*w,7,7))x.fillStyle=R(50,0,0,.01),c.style.filter=`contrast(5`

May 1 2021 1:03 PM UTC

}// 138/140

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symmetry

u/magna

Stylish!

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Xor

function u(t) {

x.fillRect(t*60,0,t/32,1920)

Apr 30 2021 8:17 PM UTC

}// 28/140

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Gradient in 28 bytes

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Xor

function u(t) {

for(i=w=1920;i-->0;)d=t*60*w+i,a=d%w,b=(d-a)/w,(Math.random()>a/w)?x.fillRect(a,b,1,1):0

Apr 28 2021 3:40 PM UTC

}// 88/140

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Gradient

u/UEZ

#dithering

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lars-erik

remix of d/22615 by u/lars-erik

function u(t) {

c.width=w=128,f=Math.floor,o=f(t*20),b=120
c.style.filter=`blur(6px)`
for(z=w;z--;)for(y=96;y--;)if(f((z+o)*y)%b==0)x.fillRect(z-1,y,4,4)

Apr 24 2021 1:55 AM UTC

}// 137/140

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I have no idea what I'm doing™ #4.3

u/lars-erik

Need fullscreen on phone.
u/erin

you can remove the right colon on blur(6px) to save a byte
u/erin

change it to blur(6px