1.4 grid distribution

/**
 * Copyright nicoptere ( http://wonderfl.net/user/nicoptere )
 * MIT License ( http://www.opensource.org/licenses/mit-license.php )
 * Downloaded from: http://wonderfl.net/c/ussv
 */

package 
{
	import flash.geom.Point;
	import flash.geom.Rectangle;
	
	/**
	 * @author Nicolas Barradeau
	 * http://en.nicoptere.net
	 */
	public class Grid
	{
		
		public var rect:Rectangle;
		public var x:Number;
		public var y:Number;
		public var width:Number;
		public var height:Number;
		public var colNum:int;
		public var rowNum:int;
		private var points:Vector.<Point>;
		
		public function Grid( rect:Rectangle, colNum:int = 5, rowNum:int = 5 ) 
		{
			
			this.rect = rect;
			this.x = rect.x;
			this.y = rect.y;
			
			this.width = rect.width;
			this.height = rect.height;
			
			this.colNum = colNum;
			this.rowNum = rowNum;
			
		}

		public function distribute( shuffle:Boolean = false, jitter:Number = 0 ):Vector.<Point>
		{
			
			points = new Vector.<Point>();
			var p:Point, i:int =  colNum * rowNum, offsetX:Number, offsetY:Number, x:int, y:int, dx:int, dy:int;
			
			offsetX = width / colNum;
			offsetY = height / rowNum
			
			while ( i-- )
			{
				
				x = i % colNum;
				y = int( i / colNum );
				
				dx = this.x + x * offsetX + offsetX / 2 + ( Math.random() - .5 ) * jitter;
				dy = this.y + y * offsetY + offsetY / 2 + ( Math.random() - .5 ) * jitter;
				
				p = new Point();
				p.x = dx;
				p.y = dy;
				
				points.push( p );
			}
			
			if ( shuffle ) 	points.sort( this.shuffle );
			
			return points;
			
		}
		
		private function shuffle( a:Number, b:Number ):int
		{
			return ( Math.random() > .5 ) ? 1 : -1;
		}

	}

}