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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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kchplr

remix of #2842 by alien

function u(t){

c.width=120
for(j=0;j<68;j++)
for(i=0;i<120;i++){
q=(i*i*j*j*8+frame*8)&768
s=100*C(q)%255
s<0&&x.fillRect(i,j,1,1)}

Jul 24 2017 9:36 PM UTC

}//122/140

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alien: :D!!!
Xen: 95bytes for you: c.width=123;for(j=70;j--;)for(i=130;i--;s=C(q=(i*i*j*j*8+frame*9)&768)<0&&x.fillRect(i,j,1,1));
Xen: 95bytes for you: c.width=123;for(j=70;j--;)for(i=130;i--;s=C(q=(i*i*j*j*8+frame*9)&768)<0&&x.fillRect(i,j,1,1));

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p01

remix of #2935 by p01

function u(t){

t?x.fillText(4,Z+=(X+=((Y+=X-(X*Z-Y)/99)-X)/9)*Y/Z-1,99+X):X=Y=Z=1

Jul 24 2017 9:10 PM UTC

}//66/140

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p01: MICRO-LORENZ

p01: Nothing wild really. This is mostly a Dwitter port of http://aem1k.com/lorenz/ which we golfed previously

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p01

function u(t){

t?x.fillText(4,9*(Z+=(X+=((Y+=X-(X*Z-Y)/99)-X)/9)*Y/Z-1),540+X*9):X=Y=Z=1

Jul 24 2017 9:08 PM UTC

}//73/140

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p01: MINI-LORENZ

p01: Nothing wild really. This is mostly a Dwitter port of http://aem1k.com/lorenz/ which we golfed previously

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Xen

function u(t){

x.font="99px S";x.fillStyle=`hsl(${X=3e3*t/19},50%,59%`;x.fillText(u,T(t*X)*X,9);x.drawImage(c,0,9)

Jul 24 2017 7:46 PM UTC

}//99/140

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Xen: [_[-[=[*RainBow99*]=]-]_]

sigveseb: Looks cool

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Xen

remix of #1105 by fson

function u(t){

x.strokeStyle=R(r=T(t*5)*(N=450),r/.22,N*r*.22);x.arc(N+N,N,(S(t)+1)*N,0,6);x.stroke();x.drawImage(c,T(t),C(t))

Jul 24 2017 12:18 AM UTC

}//111/140

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sigveseb: This is cool!
Xen: Thank you. :-)

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Xen

remix of #2930 by alien

function u(t){

for(i=c.width=9;i--;x.fillRect(0,0,a,a)){x.fillStyle=R(T(a=i+t*t),0,T(a*2));x.translate(C(a),S(a))}//Woopwoop! Thats the sound of da police!

Jul 23 2017 10:54 PM UTC

}//140/140

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sigveseb: Lol the comment

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nystrand

function u(t){

for(c.width|=x[i=frame]=300,d=t?-d:1;i--;i%6||x.lineTo(T+1e3,S+540))S=T,T=x[i]+=d*x[e=i+(i+d)%3-i%3]/123*((e+d+(t&65|t/13.3))%3);x.stroke()

Jul 23 2017 1:10 AM UTC

}//139/140

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nystrand: RotatingSpherePatternPrinter

alien: wait what is going on here D: , could explain this x[i=frame] and T=x[i] plz
alien: How can you add T a numer, isn't T a defined function?

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alien

function u(t){

for(i=W=c.width=300;i--;a=i+t,x.fillRect(0,0,a,a)){
a=i+t
x.fillStyle=R(T(a)*70,T(a/2)*9,T(a)*33);
x.translate(S(t/2)*.04+.5,C(t/2)*.08+.2)}

Jul 22 2017 4:25 PM UTC

}//143/140

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Xen: Remix #2932

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FireFly

remix of #2923 by Xen

function u(t){

x.fillRect(C(t)*4+2,0,4,c.width=8)

Jul 21 2017 9:14 PM UTC

}//34/140

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p01

remix of #2926 by [deleted]

function u(t){

for(x.drawImage(c,C(t)-9,4,i=1940,1090);i--;x.fillRect(i,0,1,4))x.fillStyle=R(T(i+t),T(i)*9,T(t))

Jul 21 2017 8:50 PM UTC

}//97/140

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p01: NIGHT-TRIP

iverjo: Looks nice in fullscreen