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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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donbright

function u(t) {

x.globalAlpha=.08
x.fillRect(0,0,w=2e3,w)
for(M=N=r=1;r<500;r++){P=M;M=(N+M)%9*C(~t);N=P
X=r*S(t*M);Y=r*C(t*N)
x.clearRect(999+X,540+Y,9,9)}

Apr 8 2019 10:28 PM UTC

}// 140/140

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crowd going fibonacci

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KilledByAPixel

function u(t) {

for(i=999;i--;)X=Y=Z=M=N=O=788,N=(t*i),O+=(i-N),M^=T(i+M),X*=C(i-t),x.fillStyle=R(N,M,Y,1),x.fillRect(885+0.36*X,300+.43*O,.1*N,.1*N)

Apr 8 2019 8:20 PM UTC

}// 133/140

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Created by my automatic dwitter emitter. Though it looks much different, this is continued from my previous dweet, now at 55 generations. Gonna keep going and see what happens...

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gpolonus

function u(t) {

w=960,h=540,c.width/=1,r=100,p=(i,f)=>f(t+i*1.05)*r
for(i=0;i<6;i++){x.moveTo(w,h)
x.lineTo(w+p(i+1,C),h+p(i+1,S))
x.stroke()}

Apr 8 2019 8:18 PM UTC

}// 126/140

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Spinning sticks

u/pavel

I am glad I looked at the code here because I learned the trick of passing in C or S to differentiate X vs Y coordinate. I used to pass an offset angle of pi/2 but this is much shorter. Nice!
u/pavel

For example this shaves off 6 chars from d/12567: for(c.width|=p=300;e=p--**.9%1;x.fillRect(960+r(S)/z,200+99/z,s=9*e/z,s))r=f=>p/(1+e*C(a=t/4+p))*f(a+p)+2*p/(1/e-e)*f(p),z=.5+r(C)/800
u/gpolonus

Thanks! I'm glad my simple windmill could help :)

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KilledByAPixel

function u(t) {

for(i=1000;i--;)X=Y=Z=M=N=O=185,M-=(O-86),O=(i+90),N/=(t+t),Z&=T(91+54),X*=C(i-t),x.fillStyle=R(O,Z,Y,1),x.fillRect(10*X,-187+6*N,M,M)

Apr 8 2019 7:39 PM UTC

}// 134/140

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Created by my automatic dwitter emitter. 29 generations.

u/Jezza

That's impressive!

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username

remix of d/13095 by u/username

function u(t) {

for(x.beginPath(i=42);i--;v(v(v(v(v(v(v())))))))x.lineTo((q=()=>T(t)*999*Math.random())((v=()=>x.clearRect(q(),q(),99,99))()),q(x.stroke()))

Apr 8 2019 7:15 PM UTC

}// 140/140

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abstract art

u/username

talking about the code btw

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username

remix of d/13091 by u/username

function u(t) {

for(x.beginPath(i=42);i--;v(v(v(v(v(v(v(v(v())))))))))x.lineTo((q=()=>2e3*Math.random())((v=()=>x.clearRect(q(),q(),9,9))()),q(x.stroke()))

Apr 8 2019 7:13 PM UTC

}// 139/140

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LGTM

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username

remix of d/13090 by u/Xen

function u(t) {

for(i=999;i--;)X=Y=Z=M=N=O=928,X=i+18,N=Y%N,O-=i*i,Y/=T(i*t),Z*=C(t-M),x.fillStyle=R(Y,N,O),x.fillRect(-777+3.3*X,-126+0.73*M,0.56*Z,0.56*Z)

Apr 8 2019 5:14 PM UTC

}// 140/140

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u/f8f82804

#moire
u/Xen

nice!

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Xen

remix of d/13090 by u/Xen

function u(t) {

for(i=1e3;i--;x.fillRect(940+7*X,540+9*T(M+t),4,9))X=M=2,X=S(i),X/=T(9*t),x.fillStyle=R(M-=-i)

Apr 8 2019 5:11 PM UTC

}// 94/140

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testing golf

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username

function u(t) {

with(x){beginPath()
for(shadowBlur=i=0000000042;i--;shadowColor=`hsl(${T(t)*i*99},99%,50%`)lineTo((a=()=>2e3*Math.random())(),a()),stroke()}

Apr 8 2019 5:00 PM UTC

}// 140/140

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00000000

u/f8f82804

#shadowcolor

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Xen

function u(t) {

for(i=999;i--;)X=Y=Z=M=N=O=3,O+=T(M/X),M-=(5-i),Y=T(M-t),X=S(i+91),X/=T(N*t),x.fillStyle=R(M,Z,N,1),x.fillRect(940+10*X,540+9.77*Y,O,O)

Apr 8 2019 4:53 PM UTC

}// 135/140

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