arcade-physics/lib/geom/triangle/CenterOn.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 Centroid_1 = __importDefault(require("./Centroid"));
const Offset_1 = __importDefault(require("./Offset"));
/**
 * @callback CenterFunction
 *
 * @param {Phaser.Geom.Triangle} triangle - The Triangle to return the center coordinates of.
 *
 * @return {Phaser.Math.Vector2} The center point of the Triangle according to the function.
 */
/**
 * Positions the Triangle so that it is centered on the given coordinates.
 *
 * @function Phaser.Geom.Triangle.CenterOn
 * @since 3.0.0
 *
 * @generic {Phaser.Geom.Triangle} O - [triangle,$return]
 *
 * @param {Phaser.Geom.Triangle} triangle - The triangle to be positioned.
 * @param {number} x - The horizontal coordinate to center on.
 * @param {number} y - The vertical coordinate to center on.
 * @param {CenterFunction} [centerFunc] - The function used to center the triangle. Defaults to Centroid centering.
 *
 * @return {Phaser.Geom.Triangle} The Triangle that was centered.
 */
const CenterOn = (triangle, x, y, centerFunc) => {
    if (centerFunc === undefined) {
        centerFunc = Centroid_1.default;
    }
    //  Get the center of the triangle
    const center = centerFunc(triangle);
    //  Difference
    const diffX = x - center.x;
    const diffY = y - center.y;
    return (0, Offset_1.default)(triangle, diffX, diffY);
};
exports.default = CenterOn;
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