package world {
	
	import flash.display.BitmapData;
	import flash.display.Sprite;
	
	function gridPattern(size:Number, bgColor:uint, lineColor:uint):BitmapData {
		var size2:Number = size/2;
		var size4:Number = size/4;
		var lines:Sprite = new Sprite();
		lines.graphics.lineStyle(1, lineColor);
		lines.graphics.moveTo(0, size4);
		lines.graphics.lineTo(size2, 0);
		lines.graphics.lineTo(size, size4);
		lines.graphics.lineTo(size2, size2);
		lines.graphics.lineTo(0, size4);
		
		var data:BitmapData = new BitmapData(size, size/2, false, bgColor);
		data.draw(lines);
		return data;
	}
}