confettijs.org

Confetti generator
此腳本不應該直接安裝，它是一個供其他腳本使用的函式庫。欲使用本函式庫，請在腳本 metadata 寫上： // @require https://update.gf.qytechs.cn/scripts/463384/1171662/confettijsorg.js
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// ==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
}();
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