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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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xem

remix of d/3325 by u/xem

function u(t) {

for(i=0;i<65;i++)for(j=0;j<65;j++)x.fillStyle=R(i*9,j*9,C(t)*99),x.fillRect(900+400*S((i+t/9)*3)*C((j+t/9)*1.5),500+400*S((j+t/9)*1.5),5,5)

Oct 21 2017 9:43 AM UTC

}// 139/140

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Some kind of Jupiter-y, Easter-egg-y thing?

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lurifax

remix of d/3292 by u/artfarnaa

function u(t) {

for(c.width|=a=30;--a;x.fillStyle=`hsl(${S(t/9)*360},70%,70%`,x.arc(960+S(b=t+a*6)*54,540+C(b)*54,a*15,0,7))x.moveTo(0,0);x.fill('evenodd')

Oct 20 2017 6:42 PM UTC

}// 139/140

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u/artfarnaa

Nice. I wonder if it's possible to do multiple colors for each stripe?

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gbnikolov

function u(t) {

c.width|=0;i=100;
x.scale(5,1)
while(i--){j=100;while(j--)x.fillRect(i*19-i*2,j*12-i*5,S(t+j*C(t+i*.02))*10,5+S(t+i*.1)*10)}

Oct 13 2017 3:32 PM UTC

}// 124/140

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gbnikolov

remix of d/3250 by u/gbnikolov

function u(t) {

c.width=1920;for(i=0;i<1000;i++){o=960+S(i*0.5)*700;p=540+C(i*0.75+t+S(t+i))*500;x.strokeStyle=R(o,0,p,1);x.lineTo(o,p);}x.stroke()

Oct 4 2017 10:50 AM UTC

}// 131/140

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artfarnaa

remix of d/3234 by u/artfarnaa

function u(t) {

for(i=(w=c.width=1e3)+1000,x.fillRect(0,0,w,w);i--;)x.clearRect(w/2+S(p=(q=Math.sqrt(i)*5)/(1.545+(v=C(t*2))/10))*q,290+C(p/2)*q,3,3)

Oct 4 2017 4:28 AM UTC

}// 133/140

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rgarner

function u(t) {

c.width=1920
for(i=0;i<200;i++){
  x.rotate(0.01)
  x.fillStyle=`hsl(${i*3},99%,50%)`
  x.fillRect(i*S(t)*10+1500,i*C(t)*10+200, 99, 33) 
}

Sep 30 2017 8:57 PM UTC

}// 140/140

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u/Xen

nice dweet, done you a remix #3225

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magna

remix of d/3218 by u/joeytwiddle

function u(t) {

for(i=c.width=480;--i;){for(j=8,d=7;j-->2;){y=40*j**.7+30/j*S(d*t/j+i/250*j);x.fillStyle=R(0,180-j*16,200);x.fillRect(i,300-y,1,y);d=-d}}

Sep 30 2017 1:53 PM UTC

}// 137/140

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Minor tweak to make shallow water lighter instead.

u/magna

@water
u/magna

#water

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bromingo

function u(t) {

for(i=c.width=480;--i;){for(j=15,d=10;j-->2;){y=40*j**.6+30/j*C(d*t/j+i/70);x.fillStyle=R(10,200 -10*j,200);x.fillRect(i,300-y,2,y);d=d}}

Sep 29 2017 6:36 PM UTC

}// 137/140

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u/iverjo

#water

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Xen

remix of d/3187 by u/alien

function u(t) {

with(x){c.width|=v=(X,Y,R)=>[20*C(X+t)*R+950,20*S(Y+t)*R+550]
for(i=1900;i--;lineWidth=.1)lineTo(...v(4.12*i,4.12*i,i*S(i/t)/29));stroke()}

Sep 21 2017 10:22 PM UTC

}// 139/140

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Fullscreen>Count to 10>Stare at middle.

u/alien

wow that's what i live to sharing ideas they can get better :D

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New_Core

function u(t) {

e=490
d=x.getImageData(a=e+e*S(t),b=e+e*C(t*1.1),99,99)
for(i=1e4;i--;d.data[f+3]=255)d.data[f=i*4]=(d.data[f]+9)%255
x.putImageData(d,a,b)

Sep 21 2017 9:40 AM UTC

}// 139/140

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u/cantelope

very creative.