Dweets awesomed by u/mohd-akram

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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BackendForth

function u(t) {

c.width=1920;
for(i=-594;i<23;i++)
{
q=99*(i+t*3)
r=Math.pow(1.4,i+t*3)
x.fillRect(q,(i%2)?500+r:500-r,59,199)
}
x.stroke()

Dec 31 2017 11:28 PM UTC

}// 123/140

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u/lionleaf

A zipper?

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ellisk1

function u(t) {

c.width|=0;for(j=1;j<13;j++){w=400*C(j/8);for(i=99;i--;){x.fillStyle=R(0,13*j,13*j);x.fillRect(-w+i*w/2,1100*S(j/8)+C(i/3+t*j/5)*w/3,w,w)}}

Dec 31 2017 10:56 PM UTC

}// 139/140

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bevans

function u(t) {

for(i=-960;i<960;i+=8)for(j=-540;j<540;j+=8)q=Math.sqrt(i*i+j*j)/1080,p=C(q*q*C(t)*500)*256,x.fillStyle=R(-p,p),x.fillRect(i+960,j+540,8,8)

Dec 31 2017 10:50 PM UTC

}// 139/140

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u/lionleaf

cool!

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BackendForth

function u(t) {

f=(a,b,r)=>{x.fillRect(a,b,r/2,r/2)
if(r>1){w=Math.log(r)*t
f(a+C(w)*r,b+S(w)*r,r/2)
f(a+S(w)*r,b+C(w)*r,r/2)}}
c.width=1920
f(960,540,248)

Dec 31 2017 10:34 PM UTC

}// 139/140

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veubeke

remix of d/5025 by u/koloskus

function u(t) {

F=(c,a,b)=>x.fillRect(a,b||500,1920-a*2,2,x.fillStyle=c||'#eef')||F
F(0,0,1)('#6f6',0)('#000',800)(t*2&1,940)
x.drawImage(c,-5,2,1930,1080)

Dec 31 2017 10:14 PM UTC

}// 139/140

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u/iverjo

Nice!
u/sigveseb

The DOF blur really adds another dimension to this!
u/lionleaf

#road

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n4x0r123

function u(t) {

c.width=2e3;n=999;for(i=0;i<n;i+=2)s=7/(9-(t*30/9.8+i/9)%8.9),x.beginPath(),j=i*9.79,x.lineWidth=s*s+8,x.arc(n,540,s*99,j,j+.26),x.stroke()

Dec 31 2017 10:13 PM UTC

}// 139/140

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Bendoman

function u(t) {

for(i=1;i<5;i++){x.beginPath();x.arc(900+S(t)*i*200,500+C(t)*i*S(t)*100,10,0,7);x.fillStyle=R(...[S,C,T].map(_=>127*(_(t)+1)));x.fill()}

Dec 31 2017 9:54 PM UTC

}// 136/140

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u/Pjaerr

“The more you approach infinity, the deeper you penetrate terror” ― Gustave Flaubert

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Pjaerr

remix of d/4868 by u/Pjaerr

function u(t) {

c.style.background=R();x.fillStyle=R(...[S,C,T].map(_=>127*(_(t)+1)));a=2.3998*frame;r=8*frame**.5;x.fillRect(r*C(a)+960,r*S(a)+540,8,8)

Dec 31 2017 9:35 PM UTC

}// 136/140

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u/Bendoman

Trying to relive the glory days.
u/@no_identd

Try 2.3999631 for maximum IEEE single float precision (it'll expand internally to 2.3999631404876708984375 due to how IEEE754 works)

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coderkid

remix of d/5018 by u/veubeke

function u(t) {

r=a=>x.fillRect(a*99,540+s*99,99,3);for(x.fillStyle=R(0,0,a=99,.01);a--;r(16+c*s))s=S(y=t/9+a)*4,c=C(y),c<.5&&r(3+c*s),r(8+c*2),r(12);

Dec 31 2017 9:11 PM UTC

}// 134/140

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jonsheller

function u(t) {

b=255;x.fillStyle=R(b,b,b,.1);x.fillRect(0,0,1920,1080);x.fillStyle=R()
for(i=0;i<99;i++)x.fillRect(i*20+S(t)*300,100*(5+5*C(.8*t+i)),9,9)

Dec 31 2017 8:35 PM UTC

}// 138/140

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