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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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Current theme challenge: #Food

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DirtyDan

function u(t) {

c.width+=0
t+=T(S(t)+C(t))
for(i=0;i++<240;)a=t*i/480,x.beginPath(),x.ellipse(i*8,540,270*(1+S(a)),270*(1+C(t)),S(a),0,7),x.stroke()

Mar 5 2018 12:33 AM UTC

}// 132/140

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u/joeytwiddle

The struggle is real

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Yogeshp3

function u(t) {

c.width=1920 // clear the canvas
for(i=0;i<9;i++)
x.fillRect((140*t+70*i)%1920,500+S(3*t)*300,40,50) // draw 50x200 rects

Mar 1 2018 10:29 PM UTC

}// 121/140

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Agnes

function u(t) {

w=1920;B=x=>S(x+Math.random());e=w*t/5,o=~~(e/w);o&&q<o&&(c.width+=0);e%=w;for(i=o,v=B(e);i--;v=B(v));x.fillRect(e,540+300*v,5,5);throw(q=o)

Mar 1 2018 1:50 PM UTC

}// 140/140

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Proving a point to a colleague for why high-order trigonometric functions make for a poor random distribution. Not art. :(

u/AnnanFay

Hmm, I don't really understand. This is because you are getting the sine of values in [0,2]?

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dwardu

function u(t) {

z=128+128*S(t*15)
x.fillStyle=R(z,z,z,1)
x.fillRect(0,0,20,1080)
x.setTransform(0.99,0,0,1,0,0)
x.drawImage(c,0,0,1920,1080,20,0,1920,1080)

Feb 27 2018 10:29 PM UTC

}// 139/140

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AnnanFay

remix of d/6994 by u/snydej

function u(t) {

w=400,d=3
for(p=6.28/d;d--;x.fillRect(0,0,w,w))x.setTransform(s=2*S(q=t+d*p),C(q),S(q+=p),C(q),960,540),x.fillStyle=R(l=60+80*s,l/2,l*2)

Feb 24 2018 12:56 AM UTC

}// 136/140

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SigmaSquared

function u(t) {

pt=[[960,0],[0,1080],[1920,1080]][~~(Math.random()*3)]
p=(t==0)?[0,0]:[p[0]+(pt[0]-p[0])/2,p[1]+(pt[1]-p[1])/2]
x.fillRect(p[0],p[1],5,5)

Feb 24 2018 12:08 AM UTC

}// 137/140

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magna

remix of d/7054 by u/DirtyDan

function u(t) {

with(x)for(i=32;i--;)fillStyle=`hsla(${9*t+i*19},${t%1*100}%,50%,.01)`,beginPath(arc(S(t)*960+960+C(t)*i,540,i*(1+S(t)*C(t))*16,0,7),fill())

Feb 23 2018 4:20 PM UTC

}// 140/140

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BirdsTweetCodersDweet

function u(t) {

x.globalAlpha=.5
x.fillRect(Math.random()*1920, Math.random()*1080, 5, 5)
x.drawImage(c,-5,-2,1980,1085)
x.clearRect(0,0,300,1080)

Feb 22 2018 8:25 PM UTC

}// 130/140

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Heh... cool

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BirdsTweetCodersDweet

function u(t) {

c.width=w=1920;m=150;for(i=0;i++<m;)k=C(t*2+i/50)*255,x.fillStyle=R(255-k/2,0,k),x.fillRect(i/m*w,w/4+100*S(i/10+t/2),10,m*C(i+t))

Feb 22 2018 2:39 PM UTC

}// 130/140

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Golfed even more :D

u/snydej

Some more golfing: w=c.width+=0;for(i=m=150;i--;x.fillRect(i/m*w,w/4+100*S(i/10+t/2),10,m*C(i+t)))k=C(t*2+i/50)*255,x.fillStyle=R(255-k/2,0,k)

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function u(t) {

c.width|=0;x.fillStyle="#E00";x.fillRect(0,0,1920,1080);x.font="99px serif";x.fillText("❤️",S(t*5)*32+900,C(t*5)*32+600)

Feb 21 2018 4:53 AM UTC

}// 120/140

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