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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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BriSeven

remix of d/18503 by u/BriSeven

function u(t) {

eval(unescape(escape`𨰮𭱩𩁴𪁼👮🐱𝠻𩡯𬠨𪰽𝐱𜠻𪰭𛐻𮀮𩡩𫁬𤡥𨱴𚁔𚠨𪐥𝀩𚰲𚡁𛑍𛁔𚠨𪐯𝁼𜀩𚰲𚠡𠐭𣐬𝀸𛀴𞀩𚑩👫𙑮𛁪👫𛱮𯀰𛁁👪𙐲𛁔🐹𝠬𣐽𜐶𞀬𮀮𩡩𫁬𤱴𮑬𩐽𘠣𡠢𚰨𘑪🰢𡑅𘠺𠐿𥀺𫠩𛁸𛡳𩑴𥁲𨑮𬱦𫱲𫐨𠰨𭀩𚠲𛁳👓𚁴𚐬𛑳𚠲𛁃𚁴𚐬𞐶𜀬𜰪𚁍𚱪𚐩`.replace(/u../g,'')))

Apr 30 2020 2:11 AM UTC

}// 139/140

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Accidentally created an optical illusion. Watch it for a while, then pause it (scrolling a bit can do this on dwitter), and it will appear to continue to move.

u/BriSeven

another part of this that interests me is that it appears to have a kind of lighting effect that changes as it rotates, but as I built the cubes up in layers of alternating colors, the lighting effect comes accidentally from the way the layers move further and closer apart as the rotate.
u/pavel

this is a nice trick
u/tomxor

I love the shading style

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rodrigo.siqueira

remix of d/18551 by u/rodrigo.siqueira

function u(t) {

for(i=2e3,f=(X,Y,n=0)=>X*X<9||Y<9?f(X*X-Y*Y-.4,2*X*Y-.7,n+2.5):x.fillStyle=`hsl(0,75%,${n}%`;i--;x.fillRect(i,t*60,1,999))f(i/480-2,1-t/9)

Apr 30 2020 1:52 AM UTC

}// 138/140

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#Fractal star filaments from #Julia set

u/aleamb

wow! amazing!
u/PoweredByWill

Wow. Why does this remind me of the credits from Total Recall?

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myro

remix of d/18548 by u/myro

function u(t) {

w=c.width=1e3
for(i=0;i<w;i++){
r=240**S(i+t/2)
a=8*T(i+t/8e9)
u=2*r*C(a)
v=r*S(a)
x.fillStyle=R(a,r,w*C(t))
x.fillRect(u+w/2,v+w/4,20,20)}

Apr 29 2020 11:55 PM UTC

}// 139/140

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blossom

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myro

remix of d/18548 by u/myro

function u(t) {

w=1080;c.width=w
for(r=0;r<w;r++){
a=(r+t*60)%6.28;u=r*C(a);v=r*S(a)
x.fillStyle=R(200+v,u*300/r,200-v)
x.fillRect(u+w/2,v+w/4,r/5,r/5)}

Apr 29 2020 9:55 PM UTC

}// 136/140

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rainbow whirlpool

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Calada2

function u(t) {

b=500
x.beginPath()
x[c='lineTo'](a=S(t*9)*200+960,C(t*9)*200+b)
x[c](S(t)*b+960,C(t)*b+b)
x.strokeStyle=`hsl(${a},50%,70%`
x.stroke()

Apr 29 2020 8:28 PM UTC

}// 134/140

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#Rainbow #Star

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Xen

remix of d/18534 by u/myro

function u(t) {

for(i=1e3;i--;x.fillStyle=R(255,v*S(t-v),!x.fillRect(u*79,v*3,v,v),.3))u=(8*t+i)%25,v=C(t-i)+i-u*9

Apr 29 2020 7:54 PM UTC

}// 98/140

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golf and test

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myro

function u(t) {

c.width=1920;t%=8;n=t*10-25
for(i=1;i<20;i++){t+=.06
v=100+200*(-2+(t)*2%4)**2
x.fillStyle=R(v,i*2*n,5*n)
x.fillRect(32*(i+n),v,i*8,i*8)}

Apr 29 2020 6:51 PM UTC

}// 137/140

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just passing

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rodrigo.siqueira

remix of d/18531 by u/rodrigo.siqueira

function u(t) {

for(i=2e3,f=(X,Y,n=11)=>X/Y<n?f(X*X-Y*Y-.8,2*X*Y+.2,n-.3):x.fillStyle=`hsl(0,99%,${n**1.9}%`;i--;x.fillRect(i,t*60,1,999))f(i/490-2,1-t/9)

Apr 29 2020 5:41 PM UTC

}// 138/140

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#Julia set fibers. #fractal similar to "Pickover stalk" and biomorph forms. Using this compact form of the test: X/Y < n

u/rodrigo.siqueira

#pickover

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Natsumi

function u(t) {

c.width=1920
for (d=i=0;i<255;d=5*T(t)*i++) {
x.fillStyle=R(i,i,i);
x.fillRect(d,d,c.width-d*2,c.height-d*2)
}

Apr 29 2020 5:34 PM UTC

}// 110/140

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flashbang

u/Natsumi

experimenting with fillRect, but I'm still not sure how to make time change the colors
u/Xen

try: x.fillStyle=hsl(${i+t*99},50%,50%)

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Natsumi

function u(t) {

d=c.width=1920;for(i=0;i<d;i++){x.beginPath();x.arc(960, 540, 2000*Math.abs(T(i)*C(t/2)),0,7);x.stroke();}

Apr 29 2020 5:07 PM UTC

}// 106/140

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away she goes, starburst!

u/Natsumi

It's cool to see how just plain circles can make such interesting patterns.