Examples of atan2 needed

[captain caffeine]

  What I need is just as it states , I understand that the command takes the x z coords and converts them into radians
or degrees or whatever, but heres what I want to do
a unit calls for help or a fire mission or what have you upon the triggering of this,  UnitB (responding) to help UnitA requesting.  

  UnitB gets the direction of UnitA using the atan2 command and faces the direction of the unit calling for help or at least the gunner will aim weapon in that direction.

 So what I need is an example or several  of the atan2 command making this unit face the direction of requesting unit.  any help will be greatly appreciated.

[toadlife]

I used it to get the compass heading from one object to another.....here ya go!

Code: [Select]

; ##the object ebing tracked
_trackee = w6

; ##the object tracking the object being tracked
_tracker = leader gw1

#start
_tracker = leader gw1

; ##the compass heading from the tracker to the trackee is calculated here

_dir = getdir (vehicle _tracker)
_degree = ((getpos _trackee select 0) - (getpos _tracker select 0)) atan2 ((getpos _trackee select 1) - (getpos _tracker select 1))

; ## "_degree" is the compass heading the tracker needs to point to face the trackee
?_degree < 0:_degree = _degree + 360


[captain caffeine]

OK cool , now heres a stupid question, is this a short script
and if so how would one implement its use, I would assume
give it a name like     setDir.sqs  and in itit line of trigger or if conditions are met [trackee , tracker] init setDir.sqs?