         // (7) dx/dt = 0 <=> sin(t) / cos(t) = (c * ry) / (a * rx);   
         // (8) dy/dt = 0 <=> sin(t) / cos(t) = (d * ry) / (b * rx);
         
-        if(rx == 0 && ry == 0)
+        if (rx == 0 && ry == 0)
         {
             var pt:Point = new Point(cx, cy);
             pt = matrix.transformPoint(pt);

            // we clamp with the range. This gives us a solution with
            // values as close as possible to satisfy our custom condition when
            // the condition is a linear function of x and y (in our case it is).
            y = Math.max( rangeMinY, Math.min( y, rangeMaxY));
            x = ( -w - c * y ) / a;
            return new Point(x,y);

        }
        return null; // No solution

	 */
	public static function isDeltaIdentity(matrix:Matrix):Boolean
	{
	    if (matrix.a == 1 && matrix.d == 1 &&
	    	matrix.b == 0 && matrix.c == 0)
            return true;
        return false;
