Stores all of the points of a Polygon into a flat array of numbers following the sequence [ x,y, x,y, x,y ], i.e. each point of the Polygon, in the order it's defined, corresponds to two elements of the resultant array for the point's X and Y coordinate.
name  type  arguments  description 

polygon  Phaser.Geom.Polygon 
The Polygon whose points to export. 

output  array  Array.<number>  <optional> 
An array to which the points' coordinates should be appended. 
The modified output
array, or a new array if none was given.