Dweets awesomed by u/Xen

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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dwardu

function u(t) {

z=128+128*S(t*15)
x.fillStyle=R(z,z,z,1)
x.fillRect(0,0,20,1080)
x.setTransform(0.99,0,0,1,0,0)
x.drawImage(c,0,0,1920,1080,20,0,1920,1080)

Feb 27 2018 10:29 PM UTC

}// 139/140

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yonatan

remix of d/7101 by u/yonatan

function u(t) {

for(A=c.width=99;A--;)for(B=57;B--;x.fillRect(A,B,s,s))X=A-50,Y=B-27,q=X*X+Y*Y,z=(2200+C(t)*2e3-q)**-.3,s=S((t*9+X*z^C(t)*9+Y*z)/9)

Feb 27 2018 8:26 PM UTC

}// 131/140

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jylikangas

function u(t) {

for(c.width=Y=W=256,t*=w=99;Y--;x.fillStyle=R(t%w,Y,w))x.fillRect(w-w/(z=Y/9)+S((v=Y+t)/w)*z*7+(v&8&&w)/z,W/z+Y*C(v/50),v/8%W>9&&W/z,Y%60/z)

Feb 27 2018 12:52 PM UTC

}// 140/140

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Enjoy the ride but watch out for the missing track pieces! :)

Show more comments…
u/aleamb

wow! epic!
u/zanella

Damn!!
u/sigveseb

Crazy good!
u/artfarnaa

Crazy Epic!
u/jylikangas

Thanks!
u/aleamb

#rollercoaster

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Batrachus

function u(t) {

for(c.width*=j=1;j<11;j*=10)for(a=Math.exp(t%2.3),i=-45;i<45;i++){x[f="fillRect"](d=i*20*j*a+960,0,b=5-5/a/j,1e9);x[f](0,d-420,1e9,b)}

Feb 27 2018 1:18 AM UTC

}// 134/140

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u/joeytwiddle

Calculus
u/Batrachus

Don't know why I used exp, when I could have used pow
u/BirdsTweetCodersDweet

Pow doesn't work on Chrome for me for some reason
u/joeytwiddle

#infinite #loop

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AnnanFay

remix of d/7047 by u/BuRRak

function u(t) {

throw p+=(f%4*4-4)/(f++*f++*f)};{p=3,f=2

Feb 25 2018 7:01 AM UTC

}// 40/140

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Golfing u/BuRRak π calculation using Nilakantha's series

u/AnnanFay

Alternatives are: 33 chars using Wallis product but *very* long time to converge. 24 chars using Newton-Raphson if sin & cos allowed.
u/BuRRak

Mind = blown
u/iverjo

#pi

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anilalur

remix of d/6609 by u/anilalur

function u(t) {

v=(a,b,g,r)=>{for(i=0;i++<r;)x.fillRect(a+=S(C(g)),b-=T(g),r/9,2)
r>1?v(a,b,g+=o,r*=.7)&v(a,b,g+=5,r):0}
o=t/9+1;
c.width=500
v(25,280,0,80)

Feb 24 2018 4:30 PM UTC

}// 140/140

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snydej

function u(t) {

f=(w,s,a)=>x.fillRect(w*2%1910,w%1080,s,s,x.fillStyle=R(a,a,a,a))
for(f(0,i=3e3,.06);--i;)f(t**(i<9?9:i<14?1:0)*200+i**4.7,3,255*S(i+t)**2)

Feb 24 2018 1:25 AM UTC

}// 139/140

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magna

remix of d/7054 by u/DirtyDan

function u(t) {

with(x)for(i=32;i--;)fillStyle=`hsla(${9*t+i*19},${t%1*100}%,50%,.01)`,beginPath(arc(S(t)*960+960+C(t)*i,540,i*(1+S(t)*C(t))*16,0,7),fill())

Feb 23 2018 4:20 PM UTC

}// 140/140

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DirtyDan

remix of d/7051 by u/DirtyDan

function u(t) {

with(x)for(i=32;i-->2;)fillStyle=`hsl(${i*t*9},100%,50%)`,lineWidth=i*2,beginPath(arc(960+C(a=t*i/3)*i,540+S(a)*i,i*i/2,0,7),fill(stroke()))

Feb 23 2018 2:34 AM UTC

}// 140/140

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u/aleamb

beautiful!
u/fons

dope
u/zanella

Nice color palette!
u/iverjo

Good colors indeed
u/Xen

love it

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Xen

function u(t) {

t?x.fillRect(0,0,2e3,69):x.translate(999,499)
x.rotate(t/29),x.fillStyle=`hsl(${t*199},59%,29%)`
x.globalCompositeOperation='difference'

Feb 23 2018 12:16 AM UTC

}// 136/140

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u/DirtyDan

Nice, reminds me of spin art: http://www.stevexcraig.com/style/images/art/…

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