arcade-physics/lib/geom/rectangle/Union.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 Rectangle_1 = __importDefault(require("./Rectangle"));
/**
 * Creates a new Rectangle or repositions and/or resizes an existing Rectangle so that it encompasses the two given Rectangles, i.e. calculates their union.
 *
 * @function Phaser.Geom.Rectangle.Union
 * @since 3.0.0
 *
 * @generic {Phaser.Geom.Rectangle} O - [out,$return]
 *
 * @param {Phaser.Geom.Rectangle} rectA - The first Rectangle to use.
 * @param {Phaser.Geom.Rectangle} rectB - The second Rectangle to use.
 * @param {Phaser.Geom.Rectangle} [out] - The Rectangle to store the union in.
 *
 * @return {Phaser.Geom.Rectangle} The modified `out` Rectangle, or a new Rectangle if none was provided.
 */
const Union = (rectA, rectB, out) => {
    if (out === undefined) {
        out = new Rectangle_1.default();
    }
    //  Cache vars so we can use one of the input rects as the output rect
    const x = Math.min(rectA.x, rectB.x);
    const y = Math.min(rectA.y, rectB.y);
    const w = Math.max(rectA.right, rectB.right) - x;
    const h = Math.max(rectA.bottom, rectB.bottom) - y;
    return out.setTo(x, y, w, h);
};
exports.default = Union;
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