phaser/src/geom/line/GetMidPoint.js
2019-05-10 16:15:04 +01:00

32 lines
833 B
JavaScript

/**
* @author Richard Davey <rich@photonstorm.com>
* @copyright 2019 Photon Storm Ltd.
* @license {@link https://opensource.org/licenses/MIT|MIT License}
*/
var Point = require('../point/Point');
/**
* Get the midpoint of the given line.
*
* @function Phaser.Geom.Line.GetMidPoint
* @since 3.0.0
*
* @generic {Phaser.Geom.Point} O - [out,$return]
*
* @param {Phaser.Geom.Line} line - The line to get the midpoint of.
* @param {(Phaser.Geom.Point|object)} [out] - An optional point object to store the midpoint in.
*
* @return {(Phaser.Geom.Point|object)} The midpoint of the Line.
*/
var GetMidPoint = function (line, out)
{
if (out === undefined) { out = new Point(); }
out.x = (line.x1 + line.x2) / 2;
out.y = (line.y1 + line.y2) / 2;
return out;
};
module.exports = GetMidPoint;