Dweets awesomed by u/joeytwiddle

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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rikardlindstrom

function u(t) {

!t&&x.translate(980,540)
for(i=99;i;i--){x.fillStyle='#'+(4E5+(255<<(w=t*i))).toString(16).substr(-6)
x.rotate(.3)
x.fillRect(l=-w/2,l,w,w)}

Dec 30 2017 6:15 AM UTC

}// 140/140

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Jezza

function u(t) {

c.width=1920;d=-2.1;e=1.9;for(i=l=j=t;i<9e3;i++)k=S(d*l)+C(t)*C(j*d),m=S(e*j)+S(t)*C(l*e),j=k,l=m,x.fillRect(960+j*400,540+l*250,2,2)

Dec 30 2017 5:02 AM UTC

}// 133/140

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Newbie here. Would have loved to add some alpha but no room :)

Show more comments…
u/Jezza

Heavily inspired by: http://paulbourke.net/fractals/clifford/
u/sigveseb

A trick for alpha is to fillrect with a width < 1 ;)
u/joeytwiddle

You can save 3 chars with: c.width|=e=1.9 (doesn't seem for work for negative d)
u/joeytwiddle

I did you a low-res remix: https://www.dwitter.net/d/4842
u/Jezza

Thanks for the tips and this remix!
u/joeytwiddle

jonathan_b has also done a remix: d/5348

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indjev99

function u(t) {

D=b=>64*S((i*i+b*b)**.5-3*t);for(i=96;i--;)for(j=54;j--;)d=D(10-j)+D(44-j)+128,x.fillStyle=R(d,d,d),x.fillRect(i*20,j*20,20,20)

Dec 30 2017 5:00 AM UTC

}// 127/140

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JonasPeeters

function u(t) {

x.fillStyle="123"
x.fillRect(0,0,1920,1080)
for(i=0;i<99;i++){x.font=(h=S(i*957)+1)*15+20+"px d"
x.fillText("❄️",i*19,((t+999)*200*h)%1150)}

Dec 30 2017 2:11 AM UTC

}// 140/140

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kchplr

remix of d/4723 by u/Xen

function u(t) {

x.strokeRect(0,0,W=1912,H=1072)
x.rotate(C(t*610)/4031)
x.drawImage(c,7,4,W,H-2)
x.strokeStyle=`hsl(50,89%,${52-C(t)*50}%)`

Dec 29 2017 9:40 PM UTC

}// 123/140

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Shopping for magic numbers !

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zkfrontman

remix of d/4252 by u/zkfrontman

function u(t) {

for(c.width|=0,i=1e3;i--;)p=t+7*i,s=20*S(p)+20,x.fillStyle=R(255*S(p+2),255*S(p+4),255),x.fillRect(250*T(i)+1e3,600+200*C(p),s,s);

Dec 29 2017 9:29 PM UTC

}// 130/140

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zkfrontman

remix of d/4252 by u/zkfrontman

function u(t) {

for(c.width|=0,i=1;i<1e3;i++)p=t-16*i,x.fillStyle=R(255,255*S(p),255*S(p+4)),x.beginPath(),x.arc(2*i,600+100*T(p),4*C(p)+11,0,7),x.fill();

Dec 29 2017 8:13 PM UTC

}// 138/140

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u/fmease

it looks beautiful!
u/joeytwiddle

nice #colors

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jonathan_b

remix of d/4600 by u/jonathan_b

function u(t) {

for(c.width|=s=490,i=0;i<s;i++)for(j=2;j<9;)r=99/j,x.fillStyle=R(i*.6,s/C(j),s/C(i),12/r),x.fillRect(970+s*C(i)*C(t/r*++j+i*r),s+s*S(i),r,r)

Dec 29 2017 8:00 PM UTC

}// 140/140

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E-Mouse

remix of d/4342 by u/retera

function u(t) {

c.width=w=1920
v=t+400
for(q=255;q--;){x.fillStyle=R(q,q,q);x.beginPath();x.arc(w/2+T(v-q)*(v+q),540+S(v-q)*(v-q),40,0,6.283,!1);x.fill()}

Dec 29 2017 5:15 PM UTC

}// 138/140

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mnt

remix of d/3030 by u/New_Core

function u(t) {

x.globalAlpha=.2;for(x.fillRect(0,0,2e3,2e3),W=j=980;--j;x.clearRect(W+S(p=t+j-5.3*V)/Z*W-Z*-9,540+C(p)/Z*W,s=60/Z,s))Z=j%18-t*5+(V=t*6|0)

Dec 29 2017 5:14 PM UTC

}// 138/140

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tunnel slowly fades away

u/katkip

#tunnel

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