Struct b3MassData NamespaceBox3D.NativeAssemblyBox3D.NET.Native.dll The mass properties of a shape or body. Mirror of b3MassData. public struct b3MassDataInherited Members object.Equals(object?) object.Equals(object?, object?) object.GetHashCode() object.GetType() object.ReferenceEquals(object?, object?) object.ToString() Fields center The local centre of mass. inertia The inertia tensor about the centre of mass. mass The mass, usually in kilograms.