[disc] Distance Calculations

[mickm]

I have been doing some tests and was just wonder what is better in the long run.
1. Using flashes built in Point object.

function Util_Distance1(Object1 : Object, Object2 : Object) : Number {
	import flash.geom.Point;
	var p1 : Point = new Point(Object1._x, Object1._y);
	var p2 : Point = new Point(Object2._x, Object2._y)
	var result_distance : Number = Point.distance(p1,p2);
	delete p1;
	delete p2;
	return result_distance;
}

2. Using Math

function Util_Distance2(Object1 : Object, Object2 : Object) : Number {
	xdist = Object2._x - Object1._x;
	ydist = Object2._y - Object1._y;
	return Math.sqrt(xdist * xdist + ydist * ydist);
}

The test I have ran both return 0 as the timed result.
So my question is, which of the two functions would give any performance?

Full Code

function Util_Distance1(Object1 : Object, Object2 : Object) : Number {
	import flash.geom.Point;
	var p1 : Point = new Point(Object1._x, Object1._y);
	var p2 : Point = new Point(Object2._x, Object2._y)
	var result_distance : Number = Point.distance(p1,p2);
	delete p1;
	delete p2;
	return result_distance;
}

function Util_Distance2(Object1 : Object, Object2 : Object) : Number {
	xdist = Object2._x - Object1._x;
	ydist = Object2._y - Object1._y;
	return Math.sqrt(xdist * xdist + ydist * ydist);
}

var StartTime:Number = getTimer();
var resultDistance : Number = Util_Distance1(Player1, Player2);
var EndTime:Number = getTimer();

trace ("Using Geom")
trace ("Distance: " + resultDistance);
trace ("Duration: " + (EndTime - StartTime) + " (ms)");

StartTime = getTimer();
resultDistance = Util_Distance2(Player1, Player2);
EndTime = getTimer();

trace ("Using Math")
trace ("Distance: " + resultDistance);
trace ("Duration: " + (EndTime - StartTime) + " (ms)");