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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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zachygreen

function u(t) {

t=S(t)*60+61
c.width*=1
for(i=0;i<1980;i++){f=0
for(j=1;j<t;j++){f+=1/(2*j-1)*S((2*j-1)*i/100)*100}x.fillRect(i,540-f,1,10)}

Dec 3 2023 7:55 AM UTC

}// 124/140

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danny@hille.dk

function u(t) {

for(i=2e3;i--;)x.fillRect(i,t*60,.2,S(t-i/60)*t^C(t+i/60)*t)

Nov 30 2023 8:05 PM UTC

}// 60/140

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u/Xen

sexy af!

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rodrigo.siqueira

remix of d/28993 by u/rodrigo.siqueira

function u(t) {

Z=740/t+t
K=!t||K+2
for(i=2e3;i--;x.fillStyle=R(Z,Z/t*2,K/9),x.fillRect(i,K-Y,1,3))Y=C(S(i/Z)*t)**2*Z,x.fillStyle=R(0),x.fillRect(i,K,1,-Y)

Nov 29 2023 2:37 AM UTC

}// 139/140

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Colorful lines - also no visible lines behind :-)

u/ximavus

Awesome

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baon

remix of d/28941 by u/baon

function u(t) {

t?onmousemove=e=>m=1.5-e.x*0.01:m=2
for(c.width|=0,i=1e4;i--;x.fillRect(960+X,540+Y,10,10))
X=400*C(i)*S(m+i/2),Y=-400*S(i+0.7**C(i)**0.05)

Nov 24 2023 10:45 AM UTC

}// 140/140

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#interactive

u/baon

#heart

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Xen

remix of d/28876 by u/xyper

function u(t) {

c.style="filter:invert("
for(i=490;i--;x.strokeRect(799+S(i+t)*i*4,399+C(i+t)*i*2,i,i))x.strokeStyle=R(i,i*2,255,.5)

Nov 17 2023 7:34 PM UTC

}// 116/140

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bang a lil remix.... Star about die.

u/Xen

#warm
u/xyper

it looks like a black hole, but without, yknow, the hole
u/DataMeta

or maybe a star about to be born from nebula hot gas and dust! :D

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xyper

function u(t) {

a=b=800;c=[500,0,0,800,999,800];for(i=0;i<99;i++){f=~~(Math.random()*3);a=a+(c[f*2]-a)/2;b=b+(c[f*2+1]-b)/2;x.fillRect(a,b,1,1)}

Nov 15 2023 11:09 AM UTC

}// 128/140

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sierpinski triangle thing i made, took way too long and is probably super unoptimised

u/Xen

nicely done!
u/rodrigo.siqueira

Simple optimization to reduce 6 chars: c=[500,0,0,a=b=800,1e3,b]

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danny@hille.dk

remix of d/28848 by u/danny@hille.dk

function u(t) {

for(c.width=i=170,t*=4;i--;)for(j=99;j--;)x.fillRect(i,j,m=(i&t&j&t)%(t/4),1/m)

Nov 11 2023 4:59 PM UTC

}// 79/140

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really fu... up remix

u/Xen

this is love!

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alien

function u(t) {

w=c.width=180
f=frame
for(j=0;j<w;j++)
for(i=0;i<w;i++){
q=(i*i+j*j)**(1.14)+f&9
s=j*C(q)
s%=255
x.fillStyle=R(s*f,s,q)
x.fillRect(i,j,1,1)}

Nov 11 2023 2:57 AM UTC

}// 140/140

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rodrigo.siqueira

remix of d/28798 by u/rodrigo.siqueira

function u(t) {

c.style='filter:sepia()invert()'
for(X=Y=t,i=6e4;i--;x.fillRect(X*9+280,Y*11+99,.1,t<1))
Y=(i/Y&8)*6+(Y-X)/2+.8/Y+.8/Y*S(Y*i),X+=Y*2

Nov 4 2023 11:21 PM UTC

}// 132/140

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Fractal night

u/sissinnguaq

beautifull

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rodrigo.siqueira

remix of d/28798 by u/rodrigo.siqueira

function u(t) {

c.style='filter:sepia()invert()'
for(A=X=Y=t,i=7e4;i--;x.fillRect(1680-X*15,Y*15+540,.1,t<1))
Y=(i/Y&8)*6+(Y-X)/2,X+=Y

Nov 4 2023 11:12 PM UTC

}// 118/140

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Night fractal sky #night #stars

u/andrea270872

almost looks like an actual night-sky picture! terrific