Defines behavior when movement is restricted to a 2D plane defined by a specific axis/normal, so that movement along the locked axis will not be possible
public enum PlaneConstraintAxis : System.Byte
Custom 0
Lock movement to a user-defined axis
X 1
Lock movement in the X axis
Y 2
Lock movement in the Y axis
Z 3
Lock movement in the Z axis
UseGlobalPhysicsSetting 4
Use the global physics project setting