centerOfMass and local coordinate origin

Questions & Answers
1

Is there a way to set the origin of the local coordinate system of a `rigidbody` equal to the `centerOfMass` automatically calculated by the Unity engine for a `MeshCollider` or complex of primitives?

I don't want to arbitrarily set the `centerOfMass`, since I want to use the auto-calculated one, but I want to apply rotational forces relative to the `centerOfMass`.

I'm using `addRelativeTorque` to apply rotational forces.

Thank you for your time, please ask me to clarify if necessary.

2

You could add an intermediate transform to act as an offsetter. E.g.

var offsetter = GameObject(transform.name + "Offsetter");
offsetter.transform.position = transform.TransformPoint(rigidbody.centerOfMass);
offsetter.transform.rotation = transform.rotation;
offsetter.transform.parent = transform.parent;
transform.parent = offsetter.transform;