Top dweets by u/leonarven

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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leonarven

function u(t) {

for(i=w=c.width=600;i--;)x.fillRect(w/2+C(t+i)*S(i/97)*w/6,w/3+S(i/1)*w/6,3,3)

Aug 19 2017 3:17 PM UTC

}// 78/140

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leonarven

function u(t) {

s=S(t),x.fillStyle=R(127+127*s,0,255)
for(i=314;a=i/49,r=2+C(a*3)*s**3,a+=S(t/2),--i;)
  x.fillRect(960+99*r*C(a),540+99*r*S(a),6,6)

Sep 23 2017 9:26 PM UTC

}// 132/140

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thx @lurifax & @cantelope for #3178 and idea to write duplicate without looking your code

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leonarven

function u(t) {

c.width|=r=30
for(I=0;I<r*r;x.fill(x.arc(585+r*X,540+r*Y,G*15,0,6)))x.beginPath(X=I-r*(Y=I++/r&255),G=1+S(7*t-Math.sqrt((Y-=12.5)*Y+X*X)/9))

Oct 21 2018 11:05 AM UTC

}// 140/140

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Waves~~

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leonarven

function u(t) {

for(i=w=c.width=600;a=C(t+i)*S(t/19),b=S(i/11)+C(t+i+3)*S(i/13+3)/9,i--;)x.fillRect(w/2+a*100,200+b*200,s=4-2*Math.sqrt(a**2+b**2),s)

Aug 19 2017 3:10 PM UTC

}// 133/140

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Not what I was originally doing x)

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leonarven

function u(t) {

P=[k=[w=1920,h=1080],[0,h],[w/2,0]];while(w--)k=[(k[0]+(p=P[Math.round(Math.random()*2)])[0])/2,(k[1]+p[1])/2],x.fillRect(k[0],k[1],1,1)//:)

Aug 9 2017 3:42 PM UTC

}// 140/140

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My first one, written with mobile phone only. Not really handy :)

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leonarven

function u(t) {

for(c.width=i=127;j=127,i--;)while(j--)x.fillStyle=R(d=255*S(i*j+t),255*C(i*j+2*t),d),x.fillRect(j,i,1,1)

Aug 10 2017 5:37 PM UTC

}// 105/140

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u/jick

Wow!

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leonarven

remix of d/2726 by u/unwiredben

function u(t) {

x.fillStyle=R((a=t*60|0)%255),
x.font="80px courier",
x.fillText('\\/'[Math.random()*2&1],a%52*36,((a/52)|0)%18*60+60)

Aug 9 2017 8:31 PM UTC

}// 118/140

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Just for exercise

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leonarven

remix of d/1973 by u/jes5199

function u(t) {

for(g=new Float32Array(1),t*=60,b=1080;b--;)(g[0]=18*(t-960)*(b-540))-g[0]>0&&x.fillRect(t,b,1,1)

Aug 9 2017 6:55 PM UTC

}// 97/140

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Just for exercise

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