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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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metamero

remix of d/15479 by u/metamero

function u(t) {

throw T=~~T+1

Aug 21 2019 1:56 PM UTC

}// 13/140

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13B variable reuse init demo

u/taupelink

nice!
u/KilledByAPixel

tight, i was looking for something like this

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rodrigo.siqueira

remix of d/15411 by u/rodrigo.siqueira

function u(t) {

v=(a,b,Φ,r)=>{for(i=0;i++<r;x.globalAlpha=.05)x.fillRect(a-=S(Φ),b-=C(Φ),s=r/42,s)
r>8&&v(a,b,Φ+S(t*i**9)/4,r*=.9)}
v(960,540+300*C(t),t,99)

Aug 20 2019 1:03 AM UTC

}// 140/140

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Dendritic projections

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tomxor

remix of d/15454 by u/katkip

function u(t) {

a ++
throw a
}{a=1e3

Aug 19 2019 7:28 PM UTC

}// 20/140

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Variable initialisation with only +2 chars (hack)

u/tomxor

Saves up to 4 chars vs t||(a=1e3);
u/katkip

Ohh
u/katkip

#genius #exploit I didnt know about that. This is clever

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django

function u(t) {

w=c.width=1920 // clear the canvas
j=t*100
for(i=0;i<800;i++){
k=j*S(0.025*(t+i))
x.fillRect(w/2-100 -S(i/t)*k/4,t+2.5*i,k/2,2.5)
}

Aug 14 2019 8:30 AM UTC

}// 131/140

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oil slick

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KilledByAPixel

remix of d/15265 by u/KilledByAPixel

function u(t) {

eval(unescape(escape`𭱩𭁨𚁸𚑦𫱲𚁦𪑬𫁒𩑣𭀨𜀬𜀬𨰮𭱩𩁴𪁼🐰𛀲𩐳𚐬𪰽𝀹𞱫𛐭𞱦𪑬𫁓𭁹𫁥👫𛐱𝐿𘠣𡡆𡠢𞠧𤡅𡀧𛁦𪑬𫀨𚐬𨡥𩱩𫡐𨑴𪀨𭀽𛑴𚐩𩡯𬠨𪠽𞐹𞱪𛐭𞱡𬡣𚁫𙐹𚡷𛀶𜀫𚁫𛰹𯀰𚐪𭰬𜐰𜀫𜰰𚡓𚁴𚠹𚰨𪰭𜐵🰱𝠺𞀩𚠨𬐽𣑡𭁨𛡐𢐪𪠯𞐹𚐩𛁱𚠽𜠬𬐩𚑷🐲𝀰`.replace(/u../g,'')))

Aug 3 2019 11:42 PM UTC

}// 139/140

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I'm just trying to fit in

u/katkip

it fits

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katkip

function u(t) {

x.fillRect(0,540,0,2e3);q=t*t*29;x.beginPath(),x.fillStyle=R(q,q,q),x.arc(960-q/5,540-q/2,400-q**(1+C(t)/99),0,7),x.fill(),x.stroke();

Jul 31 2019 5:32 PM UTC

}// 134/140

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with the trend

u/joeytwiddle

a la mode

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DataMeta

remix of d/3402 by u/magna

function u(t) {

r=Math.random;m=r(n=r(o=r(l=255)));t||(a=Array(w=2e3).fill(0));for(i=w;i--;x.fillStyle=R(l*m,l*n,l*o))x.fillRect(i,a[i],2,2),a[r()**2*w|0]++

Jul 31 2019 2:17 AM UTC

}// 140/140

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patterns out of randomness

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robbyg

function u(t) {

s=t*42
with(x)t<5?(beginPath(),arc(960-s,540-s,420-s*2,0,7),fillStyle=`hsl(99,50%,${15+s/3}%)`,fill()):0

Jul 29 2019 8:57 PM UTC

}// 104/140

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Ball?!

u/New_Core

=) in place of 0 in the end.. add : font="16cm'",fillText("❻",720,750)
u/katkip

^ kewl #sphere #lightness #light #d3

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taupelink

function u(t) {

c.width|=d=e=0;for(i=1e4;i--;)r=Math.random()*36,d+=((r&1)-d)/2,e+=((r&2)/2-e)/2,x.fillRect(400+((r/4)|0)*100+S(t)*300+d*50,400+e*200,1,1)

Jul 27 2019 2:15 AM UTC

}// 138/140

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Has this been done? #default #chaosgame

u/donbright

cool

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katkip

function u(t) {

c.width*=1;for(j=1;j--;)for(i=9;i--;)x.fillRect(400+i*100+S(t%3)*300,400,50,100),x.fillRect(410+i*100+S((4*t|0)/4%3)*300,500,50,100)

Jul 26 2019 7:19 PM UTC

}// 132/140

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Lagging #default #glitch #effect