import FreeCAD as App

class LaserPath:
    def __init__(self, obj):
        '''Add some custom properties to our box feature'''
        obj.addProperty("App::Property", "base_reference", "Reference", "Reference Point (teached)")
        obj.base_reference = App.Vector(0,0,0)
        obj.Proxy = self

    def onChanged(self, fp, prop):
        '''Do something when a property has changed'''
        App.Console.PrintMessage("Change property: " + str(prop) + "\n")

    def execute(self, fp):
        '''Do something when doing a recomputation, this method is mandatory'''
        App.Console.PrintMessage("Recompute Python Box feature\n")