Drawing a checker board pattern quickly with AS3

Today I needed to dynamically generate a checker board pattern in ActionScript 3. I couldn’t find any examples on how to do it so I made my own. Below is a snippet of code I wrote to draw it and its super fast! I used bitwise operators in the loops to speed it up and it can draw a 2000x2000px area in 10 milliseconds.

[cc lang=”actionscript3″]
// Box colour 1
var even:uint = 0xCCCCCC;

// Box colour 2
var odd:uint = 0x999999;

// Box size
var size:int = 10;

// number of boxes horizontally
var nH:int = stage.stageWidth / size;

// number of boxes vertically
var nV:int = stage.stageHeight / size;

// vars to be used in the loops
var clr:uint;
var i:uint;
var j:uint;

// loop vertical
for (i=0;i