MiaoDaren/assets/scripts/MathUtils.js

var t = require;
var e = module;
var i = exports;
var a;
function r(t) {
    return -1 < "+-*/()".indexOf(t);
}
function l(t) {
    switch (t) {
        case "+":
        case "-":
            return 1;
        case "*":
        case "/":
            return 2;
        default:
            return 0;
    }
}
Object.defineProperty(i, "__esModule", {value: !0}),
    (i.MathUtils = i.Dir = void 0),
    ((e = a = i.Dir || (i.Dir = {}))[(e.Top = 0)] = "Top"),
    (e[(e.TopRight = 1)] = "TopRight"),
    (e[(e.Right = 2)] = "Right"),
    (e[(e.BottomRight = 3)] = "BottomRight"),
    (e[(e.Bottom = 4)] = "Bottom"),
    (e[(e.BottomLeft = 5)] = "BottomLeft"),
    (e[(e.Left = 6)] = "Left"),
    (e[(e.TopLeft = 7)] = "TopLeft"),
    (i.MathUtils = class {
        getAngle(t) {
            return (180 * t) / Math.PI;
        }
        getRadian(t) {
            return (t / 180) * Math.PI;
        }
        getRadian2(t, e, i, s) {
            return Math.atan2(s - e, i - t);
        }
        getDistance(t, e, i, s) {
            (t = i - t), (e = s - e);
            return Math.sqrt(t * t + e * e);
        }
        computeGameObjDir(t, e, i, s) {
            var o,
                s = this.getRadian2(t, e, i, s),
                s = this.getAngle(s);
            return (
                0 == s
                    ? (o = a.Right)
                    : 90 == s
                    ? (o = a.Bottom)
                    : 180 == s
                    ? (o = a.Left)
                    : -90 == s
                    ? (o = a.Top)
                    : 0 < s && s < 90
                    ? (o = a.BottomRight)
                    : 90 < s && s < 180
                    ? (o = a.BottomLeft)
                    : -180 < s && s < -90
                    ? (o = a.TopLeft)
                    : -90 < s && s < 0 && (o = a.TopRight),
                o
            );
        }
        evalRpn(t) {
            let e = (function (t) {
                for (var e, i = t.match(/(\(|\)|\*|\+|\-|\/|\d+\.?\d*)/g), s = [], o = []; 0 < i.length; ) {
                    var a = i.shift();
                    if (r(a)) {
                        if ("(" == a) s.push(a);
                        else if (")" == a) {
                            for (var n = s.pop(); "(" != n && 0 < s.length; ) o.push(n), (n = s.pop());
                            if ("(" != n) throw "error: unmatched ()";
                        } else {
                            for (; (e = s[s.length - 1]), l(a) <= l(e) && 0 < s.length; ) o.push(s.pop());
                            s.push(a);
                        }
                    } else o.push(parseFloat(a));
                }
                if (0 < s.length) {
                    if (")" == s[s.length - 1] || "(" == s[s.length - 1]) throw "error: unmatched ()";
                    for (; 0 < s.length; ) o.push(s.pop());
                }
                return o;
            })(t);
            for (var i = []; 0 < e.length; ) {
                var s = e.shift();
                if (r(s)) {
                    if (i.length < 2) throw "unvalid stack length";
                    var o = i.pop(),
                        a = i.pop();
                    i.push(
                        (function (t, e, i) {
                            switch (i) {
                                case "+":
                                    return t + e;
                                case "-":
                                    return t - e;
                                case "*":
                                    return t * e;
                                case "/":
                                    return t / e;
                            }
                        })(a, o, s)
                    );
                } else i.push(s);
            }
            if (1 != i.length) throw "unvalid expression";
            return i[0];
        }
    });