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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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Current theme challenge: #Food

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katkip

remix of d/9556 by u/katkip

function u(t) {

if(!t){c.width=500;for(i=0;i<500;i++)for(j=0;j<500;j++)x.fillStyle=`hsl(${(i**2&j**2)/100},100%,50%)`,x.fillRect(i,j,1,1)}

Aug 30 2018 1:57 PM UTC

}// 122/140

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Rendering Metabycs #fractal

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katkip

remix of d/9555 by u/katkip

function u(t) {

c.width=100;for(i=t*30;i<100+t*30;i++)for(j=t*30;j<100+t*30;j++)x.fillStyle=`hsl(${(i**2&j**2)*t/8},100%,50%)`,x.fillRect(i-t*30,j-t*30,1,1)

Aug 30 2018 1:53 PM UTC

}// 140/140

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#infinite Exploring Metabycs #fractal

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katkip

function u(t) {

c.width=80;p=0;for(i=0;i<80;i++)for(j=0;j<80;j++)x.fillStyle=`hsl(${S(p)>C(i**2+j+t)-C(j**2+i+t)?t:400-t},99%,50%)`,x.fillRect(i,j,1,1),p++;

Aug 30 2018 9:29 AM UTC

}// 140/140

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Evolving cells and bacteria

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katkip

function u(t) {

for(i=0;i<200;i++)
x.fillStyle=R(i*i%255,i*4,256-i),x.fillRect(-400*t+i*100+t*300,0,t,2e3)

Aug 30 2018 9:07 AM UTC

}// 90/140

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katkip

function u(t) {

c.style.background=R(t*25%256,t*50%256,t*75%256);c.width=50;x.fillText(t*25%256*100/256|0,20,15)

Aug 30 2018 8:19 AM UTC

}// 96/140

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#disco

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katkip

function u(t) {

c.width^=0;x.font='2cm A';
for(i=0;i<20;i++)
x.fillText("water 💦💧🌊 text",666+S(t)*540,100),x.scale(1,1+i*t/2e2)

Aug 30 2018 6:35 AM UTC

}// 112/140

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katkip

function u(t) {

if(!t)p=0;c.width^=0;x.font='2cm A';for(i=0;i++<25;)for(j=0;++j<25;)x.fillText(String.fromCharCode(j+p/5-i*t),-70+i*77,j*45);p++;

Aug 30 2018 5:57 AM UTC

}// 129/140

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The Layers of Symbols. #ascii

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f8f82804

remix of d/9531 by u/f8f82804

function u(t) {

with(x)for(i=8e3;i--;moveTo(X,Y))lineWidth=S(k=i%48),lineTo(X=60*(i/9%17+8|0)+k*S(a=11*k),Y=60*(i/87%17+1|0)+k*C(a)),t||beginPath(stroke())

Aug 30 2018 5:30 AM UTC

}// 139/140

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#plotter #art #corruption #fullscreen

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BirdsTweetCodersDweet

remix of d/9528 by u/katkip

function u(t) {

n=(t/15|0)+4
for(i=2;i<n;i++)x.fillRect(960+C(t/i)*960/i,540+C(t*i)*540/i,9,9),x.fillStyle=`hsla(${i-t*50},99%,50%)`,frame%900||(c.width+=0)

Aug 29 2018 8:21 PM UTC

}// 140/140

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Spiralling out of control, AKA some vaguely mathematical logo thingies every 15 seconds... #btcd #remix-chain #sine

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f8f82804

remix of d/9523 by u/katkip

function u(t) {

with(x)for(i=3;--i;beginPath(fill(lineTo(960*i+320*(i==1)*(t%6-3),1080))))fillStyle='#'+862/i,moveTo(960,340),lineTo(0,1080)

Aug 29 2018 6:16 PM UTC

}// 124/140

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Rotating pyramid. Can anyone figure out how to make the colors smoothly darken so that it loops perfectly?

u/yonatan

with(x)for(i=3;--i;beginPath(fill(lineTo(960*i+320*(i==1)*(t%6-3),1080))))fillStyle=hsl(0 50%${i*(6+t%6)}%,moveTo(960,340),lineTo(0,1080)
u/yonatan

sorry, that's not quite right
u/f8f82804

it's great, see my remix
u/yonatan

hsl(0 50%${50+((i==1)-(t%6/6))*9}% works, but a bit long