Flash MX 2004.
Math.pointDistance(pt1, pt2)
pt1, pt2 Specify the points between which distance is measured.
A floating-point value that represents the distance between the points.
Method; computes the distance between two points.
The following example stores the value for the distance between pt1 and pt2 in the dist variable:
var pt1 = {x:10, y:20} var pt2 = {x:100, y:200}
var dist = fl.Math.pointDistance(pt1, pt2);