Dweets awesomed by u/JeremyLikness

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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JeremyLikness

function u(t) {

f=(w,a)=>{x.fillStyle=R(S(a)*255,C(a)*255,T(a)*255,0.01);x.fillRect(a,0,64,w);};for(i=2e3;i-=4;)f(C(i+t)*1e3,i);x.rotate((t%1)*Math.PI);

Jan 5 2018 2:59 PM UTC

}// 136/140

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u/joeytwiddle

Texture!

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JeremyLikness

function u(t) {

for(i=p=1e3;i--;){x.fillStyle=R(S(t+i/500)*p/2,C(t+i/500)*p/2,T(t+i/500)*p/2,0.1);x.fillRect((o=(t%1)*p/2)+S((z=t+i/10))*o,o+C(z)*o,50,50);}

Jan 5 2018 2:42 PM UTC

}// 140/140

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mpasula

function u(t) {

t||x.translate(960,540)
h=C(t*9)*255
x.fillText(t&1?'🚀K':'👾.',-6+T(h),S(h)*9+5)
x.drawImage(c,-1008,-567,2016,1134)
x.rotate(C(t)/2e3)

Jan 4 2018 8:49 AM UTC

}// 135/140

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remix of #5366 by hoplite

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jbl

remix of d/5314 by u/jbl

function u(t) {

c.width|=i=300
x.lineWidth=.1
while(--i)q=19+S(t/6)/28*i,x.arc(S(q/3)*i+q*60,(C(q*S(t/2))+4)*i/2+200,(C(q)*60+200)*S(i/96),0,7)
x.stroke()

Jan 4 2018 2:37 AM UTC

}// 138/140

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Show more comments…
u/magna

Nice!
u/nystrand

cool!
u/rikardlindstrom

love it!
u/iverjo

It looks organic
u/lionleaf

#balloon #organic #floppy
u/leonarven

Damn that looks impressive, still such simple! :)
u/skeletonNatte

Somehow pretty unsettling

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p01

function u(t) {

for(c.width=n=128;n-=r=i=1/64;x.fillRect(n%2*64,n/2,k/32,1))for(Y=1-n*i,X=n%2-1,k=32;--k/r;i=j)j=2*r*i+X*S(t)-Y*C(t),r=r*r-i*i+Y*S(t)+X*C(t)

Jan 3 2018 9:41 PM UTC

}// 140/140

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Spinning Mandelbrot set

u/magna

We're going to need a bigger CPU.
u/iverjo

Nice effect! 22 FPS on my machine, in Firefox. Surprisingly, it runs much slower in Chrome and Edge (4 FPS)
u/sigveseb

Screeching by at 4FPS on my machine too :D nice mandelbrot though
u/donbright

feel like standing up and applauding. unbelievable.
u/rodrigo.siqueira

#mandelbrot #fractal

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robbyg

function u(t) {

x.fillRect(960+C(t/2)*400+C(t*3.7)*100,540+S(t/2)*400+S(t*3.7)*100,9,9)

Jan 3 2018 9:14 PM UTC

}// 71/140

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Qwitter

function u(t) {

a=500;c.width=4*a;x.lineWidth=9;x.beginPath();for(i=1;i<10;i++){p=3*C(t)+4*i*.698;x.lineTo(a*(2+C(p)),a*(1+S(p)));}x.closePath();x.stroke();

Jan 3 2018 8:02 PM UTC

}// 140/140

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robbyg

function u(t) {

for(w=c.width=2e3,a=c.d=c.d||[...Array(w)].map((x,i)=>Math.random()*w),i=0;i<w;i++)x.fillRect(a[i]+C(a[i]+t)*15,(i+t*60)%1080,5,5)

Jan 3 2018 7:12 PM UTC

}// 130/140

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lowpoly

function u(t) {

for(y=c.width=c.height=n=80;y--;)for(z=n;z--;)x.fillRect(z,y,1,1,x.fillStyle=((Math.sqrt(z*z+y*y))^(Math.atan2(y,z)*n+t*n))&8?'#4a8':'#445')

Jan 3 2018 6:44 PM UTC

}// 140/140

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Experimenting with a "classical" formula

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eviltoad

remix of d/5386 by u/eviltoad

function u(t) {

c.width|=f=(a,d,g,b,w,h)=>!d?x.stroke():(x.lineTo(w-=g*C(a),h-=g*S(a)),[b,-b].map(_=>f(a+_,d-1,g/1.5,b,w,h)));f(1.57,9,400,5*S(t),960,1080)

Jan 3 2018 4:56 PM UTC

}// 139/140

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