The Polygon Center and Polygon Normals output ports can output their respective position or vector values using either of the coordinate systems listed below.
The world coordinate system.
The local coordinate system as defined by the next highest object in the hierarchy.
If you want the node to output the exact point coordinates of polygons that are deformed by deformers, enable the separate Use Deformed Points option. You will find this option on the Attribute Manager’s Node Properties page. If the option is disabled, the node outputs the coordinates of the non-deformed object.