Calculate Hit location ?

Hello
I am trying To Make a Plugin

OK, i try To get the location where the player gets hittet!

Wiht a projectile its easy
Get projectile get location

But how works this in an sword fight?
Example: you hit a player with a sword on his head
Now it tellme a number

Player1 Hit Player2

Location location1 = ???
Locatiob location2 = Player2.getLocation();

Double number = location1.getY() - location2.getY();

Player1.sendMessage("High: " + number);

How can i geht location1
(Location where Player gets hittet by Sword, i habe done this with projectiles it works location1 = projectile.getLocation(); than i get the location where Player2 gets hittet by the projectile ,Head ,Legs and More but how can i geht
The hittet location Form example a sword?)

I think i must use yaw pitch or looking direction
But how

 

You can get the attacking player's eye location direction vector and find the intersection with the attacked player's bounding box. This is not quite the easiest task to get right and will certainly involve some intensive geometry. This process is known as raycasting and it is very well-known within the gaming programming community, some quick Googling will get you a number of good results.

 

coasterman10

Ok but what can i do now ? i found nothin about Bukkit raycasting