public class @ax-student-ar-org-papervision3d-core-math-util-FastRectangleTools 
          {
                  
                  
                                  
                  /* 
  		 * 
  		 * in my tests runs 1/3 faster the Rectangle.intersects
  		 * Rectangle.intersects() Test: 71.4499
  		 * Fast intersect Test: 54.199
  		 * 
  		 * @Author Seb Lee-Delisle
  		 * 
  		 * @param        rect1 
  		 * @param        rect2  
  		 *
	 returns:   true if the rectangles intersect. 
  
  		 */ 
                   
                  public static function intersects(rect1 : Rectangle, rect2 :Rectangle) : Boolean
                  {
                          
                          if(!((rect1.right<rect2.left)||(rect1.left>rect2.right)))
                                  if(!((rect1.bottom<rect2.top)||(rect1.top>rect2.bottom)))
                                          return true; 
                                          
                          return false; 
                          
                  }
                          
                  
                  /* benchmarks compared to Rectangle.intersection : 
                  Rectangle.intersects() Test                        : 146.89999999999998
                  this function (without targetrect)          : 133.45
                  this function (with targetrect)              : 72.55*/
                  
                  public static function intersection(rect1:Rectangle, rect2: Rectangle, targetrect:Rectangle = null) : Rectangle
                  {
                  
                          if(!targetrect) targetrect = new Rectangle(); 
                          if(!intersects(rect1, rect2)) 
                          {
                                  targetrect.x = 
                                          targetrect.y = 
                                          targetrect.width = 
                                          targetrect.height = 0;
                                          
                                  return targetrect; 
                                  
                          }
                          targetrect.left = (rect1.left>rect2.left) ? rect1.left : rect2.left; 
                          targetrect.right = (rect1.right<rect2.right) ? rect1.right : rect2.right; 
                          targetrect.top = (rect1.top>rect2.top) ? rect1.top : rect2.top; 
                          targetrect.bottom = (rect1.bottom<rect2.bottom) ? rect1.bottom : rect2.bottom; 
                          
                          return targetrect; 
                          
                          
                          
                          
                          
                          
                  }
                  
                  
        }
}