Source: util.js

/*jslint plusplus: true, white: true, indent: 2, maxlen: 90 */
/*global HTMLCanvasElement, document */
/**
 *  @author    Wolfgang Kowarschick
 *  @copyright 2013, Wolfgang Kowarschick
 *  <br/>
 *  Redistribution and use in source and binary forms, with or without
 *  modification, are permitted under the terms of the 
 *  Creative Commons License Attribution-NonCommercial-ShareAlike 3.0 Unported    
 *  (CC BY-NC-SA 3.0: http://creativecommons.org/licenses/by-nc-sa/3.0/). 
 */

(function($wk$)
{ "use strict"; 

////////////////////////////////////////////////////////////////////////////////
// Class "Math"
////////////////////////////////////////////////////////////////////////////////

/**
 *  @class
 *  @name $wk$.Math
 */


/**
 *  Computes a random integer number within an interval.
 *  @method
 *  @name $wk$.Math.randomInt
 *  @param {Number | Array<Number>} p_interval
 *  @returns An integer number within the interval 
 *           [<code>p_interval[0]</code>, <code>p_interval[1]</code>].     
 */
Math.randomInt =
  function(p_interval)
  { if (p_interval instanceof Array)
    { var l_min = p_interval[0], l_max = p_interval[1];
      return l_min+Math.floor(Math.random()*(l_max-l_min+1));    
    }
    else
    { return Math.floor(p_interval); }
  };
 
/**
 *  Computes a random number within an interval.
 *  @method
 *  @name $wk$.Math.randomNum
 *  @param {Number | Array<Number>} p_interval
 *  @returns A number within the interval 
 *           [<code>p_interval[0]</code>, <code>p_interval[1]</code>].     
 */
Math.randomNum =
  function(p_interval)
  { if (p_interval instanceof Array)
    { var l_min = p_interval[0], l_max = p_interval[1];
      return l_min+Math.random()*(l_max-l_min);    
    }
    else
    { return p_interval; }
  };
  
$wk$.Math = Math;

////////////////////////////////////////////////////////////////////////////////
//End of Class "Math"
////////////////////////////////////////////////////////////////////////////////

}(this.$wk$));