public override Vector3 GetVelocityInLocalPoint(BulletBody pBody, Vector3 pos)
{
RigidBody body = (pBody as BulletBodyXNA).rigidBody;
IndexedVector3 posiv3 = new IndexedVector3(pos.X, pos.Y, pos.Z);
IndexedVector3 iv3 = body.GetVelocityInLocalPoint(ref posiv3);
return new Vector3(iv3.X, iv3.Y, iv3.Z);
}