Python script I coded for rigging in Maya : function returns the center pos of the current selection

Python script I coded for rigging in Maya : function returns the center pos of the current selection

#maya #python #rigging

[personal memo]
#This function works for transform nodes and Poly vertices & Nurbs CVs
#
#When getting the center pos of Poly vertices & Nurbs CVs,
#the transformation of objects needs to be freezed(zero-out).
#Other wise the center pos of vertices & CVs would not be correct.