text: var MATH_CONST = require('../../math/const');
  var Wrap = require('../../math/Wrap');
  var Angle = require('./Angle');
  
  /**
   * [description]
   *
   * @function Phaser.Geom.Line.NormalAngle
   * @since 3.0.0
   *
   * @param {Phaser.Geom.Line} line - [description]
   *
   * @return {number} [description]
   */
  var NormalAngle = function (line)
  {
      var angle = Angle(line) - MATH_CONST.TAU;
  
      return Wrap(angle, -Math.PI, Math.PI);
  };
  
  module.exports = NormalAngle;
  