Split rigidbody into pieces

hey my game development fellows

i got stuck in a problem with the physics engine by unity. there is a barrel wich should break into pieces if it collides with another object faster than a specified velocity. now the problem is: how to know the torque of these pieces?

say for example:
-the barrels rigidbody rotates with a torque of (0.7,0.7,0)
-than it collides
-the velocity of the pieces can easily get by using "GetPointVelocity()"
-now destroy the barrel itself, spawn the pieces and apply the velocity .

it is important that it is physically correct.

hope anyone has some ideas /suggestions.

cheerio sumaccamus

 

You men junks body parts ? You can try add physic on fly.

Code (JavaScript):

1. function AddPhysics()
2. {
3.     if (colliding)
4.     {
5.         if (physicObj.gameObject != null)
6.         {
7.             physicObj.gameObject.AddComponent(DestroyTimeScript);
8.             physicObj.transform.DetachChildren();
9.             physicObj.transform.parent = null;      
10.                    
11.             physicObj.gameObject.AddComponent(Rigidbody).interpolation = RigidbodyInterpolation.Interpolate;      
12.             physicObj.gameObject.AddComponent(MeshCollider).convex = true;
13.         }
14.     }  
15. }

Hope help your needs.

 

i don't get the point.
not sure how this helps to find the correct torque.

 

Vector3 localangularvelocity = transform.InverseTransformDirection(rigidbody.angularVelocity);