Bookmarklets/Let it Snow.js at master · TheTechBasket/Bookmarklets · GitHub

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javascript: (t => {
function i() {
this.D = function() {
const t = h.atan(this.i / this.d);
l.save(), l.translate(this.b, this.a), l.rotate(-t), l.scale(this.e, this.e * h.max(1, h.pow(this.j, .7) / 15)), l.drawImage(m, -v / 2, -v / 2), l.restore()
}
}
window;
const h = Math,
r = h.random,
a = document,
o = Date.now;
e = (t => {
l.clearRect(0, 0, _, f), l.fill(), requestAnimationFrame(e);
const i = .001 * y.et;
y.r();
const s = L.et * g;
for (var n = 0; n < C.length; ++n) {
const t = C[n];
t.i = h.sin(s + t.g) * t.h, t.j = h.sqrt(t.i * t.i + t.f), t.a += t.d * i, t.b += t.i * i, t.a > w && (t.a = -u), t.b > b && (t.b = -u), t.b < -u && (t.b = b), t.D()
}
}), s = (t => {
for (var e = 0; e < p; ++e) C[e].a = r() * (f + u), C[e].b = r() * _
}), n = (t => {
c.width = _ = innerWidth, c.height = f = innerHeight, w = f + u, b = _ + u, s()
});
class d {
constructor(t, e = !0) {
this._ts = o(), this._p = !0, this._pa = o(), this.d = t, e && this.s()
}
get et() {
return this.ip ? this._pa - this._ts : o() - this._ts
}
get rt() {
return h.max(0, this.d - this.et)
}
get ip() {
return this._p
}
get ic() {
return this.et >= this.d
}
s() {
return this._ts = o() - this.et, this._p = !1, this
}
r() {
return this._pa = this._ts = o(), this
}
p() {
return this._p = !0, this._pa = o(), this
}
st() {
return this._p = !0, this
}
}
const c = a.createElement("canvas");
H = c.style, H.position = "fixed", H.left = 0, H.top = 0, H.width = "100vw", H.height = "100vh", H.zIndex = "100000", H.pointerEvents = "none", a.body.insertBefore(c, a.body.children[0]);
const l = c.getContext("2d"),
p = 300,
g = 5e-4,
u = 20;
let _ = c.width = innerWidth,
f = c.height = innerHeight,
w = f + u,
b = _ + u;
const v = 15.2,
m = a.createElement("canvas"),
E = m.getContext("2d"),
x = E.createRadialGradient(7.6, 7.6, 0, 7.6, 7.6, 7.6);
x.addColorStop(0, "hsla(255,255%,255%,1)"), x.addColorStop(1, "hsla(255,255%,255%,0)"), E.fillStyle = x, E.fillRect(0, 0, v, v);
let y = new d(0, !0),
C = [],
L = new d(0, !0);
for (var j = 0; j < p; ++j) {
const t = new i;
t.a = r() * (f + u), t.b = r() * _, t.c = 1 * (3 * r() + .8), t.d = .1 * h.pow(t.c, 2.5) * 50 * (2 * r() + 1), t.d = t.d < 65 ? 65 : t.d, t.e = t.c / 7.6, t.f = t.d * t.d, t.g = r() * h.PI / 1.3, t.h = 15 * t.c, t.i = 0, t.j = 0, C.push(t)
}
s(), EL = a.addEventListener, EL("visibilitychange", () => setTimeout(n, 100), !1), EL("resize", n, !1), e()
})()