arcade-physics/lib/geom/polygon/GetAABB.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/Rectangle"));
/**
 * Calculates the bounding AABB rectangle of a polygon.
 *
 * @function Phaser.Geom.Polygon.GetAABB
 * @since 3.0.0
 *
 * @generic {Phaser.Geom.Rectangle} O - [out,$return]
 *
 * @param {Phaser.Geom.Polygon} polygon - The polygon that should be calculated.
 * @param {(Phaser.Geom.Rectangle|object)} [out] - The rectangle or object that has x, y, width, and height properties to store the result. Optional.
 *
 * @return {(Phaser.Geom.Rectangle|object)} The resulting rectangle or object that is passed in with position and dimensions of the polygon's AABB.
 */
const GetAABB = (polygon, out) => {
    if (out === undefined) {
        out = new Rectangle_1.default();
    }
    let minX = Infinity;
    let minY = Infinity;
    let maxX = -minX;
    let maxY = -minY;
    let p;
    for (let i = 0; i < polygon.points.length; i++) {
        p = polygon.points[i];
        minX = Math.min(minX, p.x);
        minY = Math.min(minY, p.y);
        maxX = Math.max(maxX, p.x);
        maxY = Math.max(maxY, p.y);
    }
    out.x = minX;
    out.y = minY;
    out.width = maxX - minX;
    out.height = maxY - minY;
    return out;
};
exports.default = GetAABB;
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