phaser/src/geom/rectangle/Inflate.js

A fast, free and fun HTML5 Game Framework for Desktop and Mobile web browsers.

/**
 * @author       Richard Davey <rich@photonstorm.com>
 * @copyright    2018 Photon Storm Ltd.
 * @license      {@link https://github.com/photonstorm/phaser/blob/master/license.txt|MIT License}
 */

var CenterOn = require('./CenterOn');

//  Increases the size of the Rectangle object by the specified amounts.
//  The center point of the Rectangle object stays the same, and its size increases
//  to the left and right by the x value, and to the top and the bottom by the y value.

/**
 * [description]
 *
 * @function Phaser.Geom.Rectangle.Inflate
 * @since 3.0.0
 *
 * @generic {Phaser.Geom.Rectangle} O - [rect,$return]
 *
 * @param {Phaser.Geom.Rectangle} rect - [description]
 * @param {number} x - [description]
 * @param {number} y - [description]
 *
 * @return {Phaser.Geom.Rectangle} [description]
 */
var Inflate = function (rect, x, y)
{
    var cx = rect.centerX;
    var cy = rect.centerY;

    rect.setSize(rect.width + (x * 2), rect.height + (y * 2));

    return CenterOn(rect, cx, cy);
};

module.exports = Inflate;