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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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aliencaido

function u(t) {

c.width=1920
for(i=1;i<9;i++)
x.fillRect(900+i*+C(t)*400,250,50,800)

Jan 8 2020 4:36 AM UTC

}// 68/140

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KilledByAPixel

remix of d/17077 by u/robotman_

function u(t) {

with(x)for(c.width|=i=9,translate(960,540);i--;stroke())beginPath(scale(1.3,1.3)),ellipse(0,0,50*Math.abs(S(t+i/3)),50,t+i*i,0,7)

Jan 8 2020 3:22 AM UTC

}// 129/140

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Loading Gyro

u/Odog8

euler on crack

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tresspass

function u(t) {

t?0:a=0;x.strokeStyle=S(a/2)>0?"BLACK":"WHITE";a+=.01;x.beginPath();x.moveTo(960,540);x.lineTo(960-2000*C(a),540-2000*S(a));x.stroke();

Jan 8 2020 2:11 AM UTC

}// 135/140

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First dweet. Be nice ;)

u/Xen

pretty much perfect only 3 tiny golfs i see, very nice first
u/Odog8

Welcome!
u/katkip

#waitforit for full effect

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pavel

function u(t) {

for(c.width|=i=4;i--;x.fill(x.arc(96*(8+i%2*4+2*o+C(a=Math.PI*(o?q:-q))),540+96*S(a),96,0,7)))q=t+3*(i>1),x.beginPath(o='001221'[~~q%6]-1)

Jan 7 2020 11:54 PM UTC

}// 138/140

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Points

Show more comments…
u/pavel

Credit https://www.reddit.com/r/loadingicon/comment…
u/tylertoomey

Can you explain how you are declaring your variables? specifically in "8+i%2*4+2*o+C" you reference 'o' and 'C' before they have even been declared -- I think.
u/pavel

for(i=9;i--;/*code here*/)/*runs after code here*/
u/ivylab

Exactly the other way around, isn't it? First the code after the bracket runs and then the code in the brackets. Your declaration is behind them. c.width=1e3;for(i=9;i--;x.fillStyle='red')x.fillRect(112*i,0,100,1000) shows that too.
u/sigveseb

Or in other words, a for loop for(A; B; C) D; will run the different parts in this order: A B D C B D C B D C .. B
u/ivylab

Exactly what I think and meant. Well written @sigveseb
u/joeytwiddle

beginPath, arc and do-si-do 🕺💃 🎻
u/UEZ

#dance

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gambit

remix of d/3713 by u/bobdunn

function u(t) {

c.width=1920; /* clear the canvas */
  for(i=0;i<6;i++)
  x.fillRect(i*30, 400 + C(4*t+(i*3))*100, 27, 200)

Jan 7 2020 11:34 PM UTC

}// 107/140

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KilledByAPixel

function u(t) {

x.fillRect((T=-~T)%32*60-((z=T>>5)%2-(q=S(T*T)<0))*30,(z-q)*30,q?6:66,q?60:6)

Jan 7 2020 7:01 PM UTC

}// 77/140

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Mini #Maze #Truchet

u/Xen

Amazing! :-O
u/katkip

amazeing
u/sigveseb

next step: solving the maze

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hotdogninja76

function u(t) {

c.width|=0
for(j=0;j<5;j++){x.fillStyle="#d"+(2*j)+(1+S(t)+"")[2]
for(i=0;i<1920;i+=10)x.fillRect(i,S(t+j*t+i/100)*500+540,10,50)}

Jan 7 2020 6:52 PM UTC

}// 130/140

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u/Xen

true fact: this is what them aliens2 rifle thingys did on the inside but a few billions times faster!
u/Xen

intensive business for the aliens but thats what you get for standing on the shootie end!!!

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katkip

function u(t) {

c.width*=1
if(!t){p=[];for(i=100;i-->-100;)for(j=100;j-->-100;)p.push({x:i*4,y:j*4})}
for(i of p)x.fillRect(i.x*t+960,i.y*t+540,4+t*2,4+t*2)

Jan 7 2020 6:41 PM UTC

}// 140/140

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performance test

u/Odog8

it's noice when you #waitforit

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Xen

remix of d/17089 by u/rodrigo.siqueira

function u(t) {

for(i=1e3;i--;x.strokeStyle=`hsl(${i^t*i},75%,30%,.3`,x.stroke())x.beginPath(),x.arc(960+i*C(A=t*3*T(t/i*i)),540+i*S(A),i/7,0,7)

Jan 7 2020 4:21 PM UTC

}// 128/140

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#waitforit #Xweet

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rodrigo.siqueira

remix of d/17087 by u/rodrigo.siqueira

function u(t) {

for(i=40;i--;x.strokeStyle=`hsl(${9*t},55%,${50*(5*t%2)}%,.4`,x.stroke())x.beginPath(r=t*80),x.arc(960+r*S(a=T(t)*2),540+r*C(a),99*t+i,0,7)

Jan 7 2020 3:03 PM UTC

}// 139/140

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Color vortex #spiral #waitforit

u/Xen

Nice!