phaser
Version:
A fast, free and fun HTML5 Game Framework for Desktop and Mobile web browsers.
30 lines (27 loc) • 609 B
JavaScript
/**
* @author Richard Davey <rich@photonstorm.com>
* @copyright 2018 Photon Storm Ltd.
* @license {@link https://github.com/photonstorm/phaser/blob/master/license.txt|MIT License}
*/
/**
* [description]
*
* @function Phaser.Math.Easing.Circular.InOut
* @since 3.0.0
*
* @param {number} v - [description]
*
* @return {number} [description]
*/
var InOut = function (v)
{
if ((v *= 2) < 1)
{
return -0.5 * (Math.sqrt(1 - v * v) - 1);
}
else
{
return 0.5 * (Math.sqrt(1 - (v -= 2) * v) + 1);
}
};
module.exports = InOut;