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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Phaser Source: D:/wamp/www/phaser/src/math/Math.js</title>
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<script src="//html5shiv.googlecode.com/svn/trunk/html5.js"></script>
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<h1 class="page-title">Source: D:/wamp/www/phaser/src/math/Math.js</h1>
<section>
<article>
<pre class="sunlight-highlight-javascript linenums">/**
* @author Richard Davey <rich@photonstorm.com>
* @copyright 2014 Photon Storm Ltd.
* @license {@link https://github.com/photonstorm/phaser/blob/master/license.txt|MIT License}
*/
/**
* A collection of useful mathematical functions.
*
* These are normally accessed through `game.math`.
*
* @class Phaser.Math
* @static
* @see {@link Phaser.Utils}
* @see {@link Phaser.ArrayUtils}
*/
Phaser.Math = {
/**
* Twice PI.
* @property {number} Phaser.Math#PI2
* @default ~6.283
* @deprecated 2.2.0 - Not used internally. Use `2 * Math.PI` instead.
*/
PI2: Math.PI * 2,
/**
* Two number are fuzzyEqual if their difference is less than epsilon.
*
* @method Phaser.Math#fuzzyEqual
* @param {number} a
* @param {number} b
* @param {number} [epsilon=(small value)]
* @return {boolean} True if |a-b|<epsilon
*/
fuzzyEqual: function (a, b, epsilon) {
if (typeof epsilon === 'undefined') { epsilon = 0.0001; }
return Math.abs(a - b) < epsilon;
},
/**
* `a` is fuzzyLessThan `b` if it is less than b + epsilon.
*
* @method Phaser.Math#fuzzyLessThan
* @param {number} a
* @param {number} b
* @param {number} [epsilon=(small value)]
* @return {boolean} True if a<b+epsilon
*/
fuzzyLessThan: function (a, b, epsilon) {
if (typeof epsilon === 'undefined') { epsilon = 0.0001; }
return a < b + epsilon;
},
/**
* `a` is fuzzyGreaterThan `b` if it is more than b - epsilon.
*
* @method Phaser.Math#fuzzyGreaterThan
* @param {number} a
* @param {number} b
* @param {number} [epsilon=(small value)]
* @return {boolean} True if a>b+epsilon
*/
fuzzyGreaterThan: function (a, b, epsilon) {
if (typeof epsilon === 'undefined') { epsilon = 0.0001; }
return a > b - epsilon;