Confetti generator
This script should not be not be installed directly. It is a library for other scripts to include with the meta directive // @require https://update.greatest.deepsurf.us/scripts/463384/1171662/confettijsorg.js
// ==UserScript==
// @name confettijs.org
// @namespace https://confettijs.org/
// @description Confetti generator
// @version 1.0.0
// @author Unknown
// @grant none
// ==/UserScript==
var Confetti = function() {
var t = function() {
return function() {
this.gravity = 10, this.particle_count = 75, this.particle_size = 1, this.explosion_power = 25, this.destroy_target = !0, this.fade = !1
}
}(),
e = function() {
function e(n) {
var r = this;
if (this.bursts = [], this.setCount = function(t) {
if ("number" != typeof t) throw new Error("Input must be of type 'number'");
e.CONFIG.particle_count = t
}, this.setPower = function(t) {
if ("number" != typeof t) throw new Error("Input must be of type 'number'");
e.CONFIG.explosion_power = t
}, this.setSize = function(t) {
if ("number" != typeof t) throw new Error("Input must be of type 'number'");
e.CONFIG.particle_size = t
}, this.setFade = function(t) {
if ("boolean" != typeof t) throw new Error("Input must be of type 'boolean'");
e.CONFIG.fade = t
}, this.destroyTarget = function(t) {
if ("boolean" != typeof t) throw new Error("Input must be of type 'boolean'");
e.CONFIG.destroy_target = t
}, this.setupCanvasContext = function() {
if (!e.CTX) {
var t = document.createElement("canvas");
e.CTX = t.getContext("2d"), t.width = 2 * window.innerWidth, t.height = 2 * window.innerHeight, t.style.position = "fixed", t.style.top = "0", t.style.left = "0", t.style.width = "calc(100%)", t.style.height = "calc(100%)", t.style.margin = "0", t.style.padding = "0", t.style.zIndex = "999999999", t.style.pointerEvents = "none", document.body.appendChild(t), window.addEventListener("resize", function() {
t.width = 2 * window.innerWidth, t.height = 2 * window.innerHeight
})
}
}, this.setupElement = function(t) {
var n;
r.element = document.getElementById(t), null === (n = r.element) || void 0 === n || n.addEventListener("click", function(t) {
var n = new o(2 * t.clientX, 2 * t.clientY);
r.bursts.push(new i(n)), e.CONFIG.destroy_target && (r.element.style.visibility = "hidden")
})
}, this.update = function(t) {
r.delta_time = (t - r.time) / 1e3, r.time = t;
for (var e = r.bursts.length - 1; e >= 0; e--) r.bursts[e].update(r.delta_time), 0 == r.bursts[e].particles.length && r.bursts.splice(e, 1);
r.draw(), window.requestAnimationFrame(r.update)
}, !n) throw new Error("Missing id");
e.CONFIG || (e.CONFIG = new t), this.time = (new Date).getTime(), this.delta_time = 0, this.setupCanvasContext(), this.setupElement(n), window.requestAnimationFrame(this.update)
}
return e.prototype.draw = function() {
s.clearScreen();
for (var t = 0, e = this.bursts; t < e.length; t++) {
e[t].draw()
}
}, e
}(),
i = function() {
function t(t) {
this.particles = [];
for (var i = 0; i < e.CONFIG.particle_count; i++) this.particles.push(new n(t))
}
return t.prototype.update = function(t) {
for (var e = this.particles.length - 1; e >= 0; e--) this.particles[e].update(t), this.particles[e].checkBounds() && this.particles.splice(e, 1)
}, t.prototype.draw = function() {
for (var t = this.particles.length - 1; t >= 0; t--) this.particles[t].draw()
}, t
}(),
n = function() {
function t(t) {
this.size = new o((16 * Math.random() + 4) * e.CONFIG.particle_size, (4 * Math.random() + 4) * e.CONFIG.particle_size), this.position = new o(t.x - this.size.x / 2, t.y - this.size.y / 2), this.velocity = r.generateVelocity(), this.rotation = 360 * Math.random(), this.rotation_speed = 10 * (Math.random() - .5), this.hue = 360 * Math.random(), this.opacity = 100, this.lifetime = Math.random() + .25
}
return t.prototype.update = function(t) {
this.velocity.y += e.CONFIG.gravity * (this.size.y / (10 * e.CONFIG.particle_size)) * t, this.velocity.x += 25 * (Math.random() - .5) * t, this.velocity.y *= .98, this.velocity.x *= .98, this.position.x += this.velocity.x, this.position.y += this.velocity.y, this.rotation += this.rotation_speed, e.CONFIG.fade && (this.opacity -= this.lifetime)
}, t.prototype.checkBounds = function() {
return this.position.y - 2 * this.size.x > 2 * window.innerHeight
}, t.prototype.draw = function() {
s.drawRectangle(this.position, this.size, this.rotation, this.hue, this.opacity)
}, t
}(),
o = function() {
return function(t, e) {
this.x = t || 0, this.y = e || 0
}
}(),
r = function() {
function t() {}
return t.generateVelocity = function() {
var t = Math.random() - .5,
i = Math.random() - .7,
n = Math.sqrt(t * t + i * i);
return i /= n, new o((t /= n) * (Math.random() * e.CONFIG.explosion_power), i * (Math.random() * e.CONFIG.explosion_power))
}, t
}(),
s = function() {
function t() {}
return t.clearScreen = function() {
e.CTX && e.CTX.clearRect(0, 0, 2 * window.innerWidth, 2 * window.innerHeight)
}, t.drawRectangle = function(t, i, n, o, r) {
e.CTX && (e.CTX.save(), e.CTX.beginPath(), e.CTX.translate(t.x + i.x / 2, t.y + i.y / 2), e.CTX.rotate(n * Math.PI / 180), e.CTX.rect(-i.x / 2, -i.y / 2, i.x, i.y), e.CTX.fillStyle = "hsla(" + o + "deg, 90%, 65%, " + r + "%)", e.CTX.fill(), e.CTX.restore())
}, t
}();
return e
}();