arcade-physics/lib/geom/line/ReflectAngle.js

Use Arcade Physics without Phaser.

"use strict";
/**
 * @author       Richard Davey <rich@photonstorm.com>
 * @copyright    2020 Photon Storm Ltd.
 * @license      {@link https://opensource.org/licenses/MIT|MIT License}
 */
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
const Angle_1 = __importDefault(require("./Angle"));
const NormalAngle_1 = __importDefault(require("./NormalAngle"));
/**
 * Calculate the reflected angle between two lines.
 *
 * This is the outgoing angle based on the angle of Line 1 and the normalAngle of Line 2.
 *
 * @function Phaser.Geom.Line.ReflectAngle
 * @since 3.0.0
 *
 * @param {Phaser.Geom.Line} lineA - The first line.
 * @param {Phaser.Geom.Line} lineB - The second line.
 *
 * @return {number} The reflected angle between each line.
 */
const ReflectAngle = (lineA, lineB) => {
    return 2 * (0, NormalAngle_1.default)(lineB) - Math.PI - (0, Angle_1.default)(lineA);
};
exports.default = ReflectAngle;
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