calculateBoundingBox in PolygonPoints.py

[Misca1234]

    def calculateBoundingBox(self):
        min = max = self.getRealPosition(self.nodes[0])

Is this correct, does not min and max become the same object,
and therefroe the min and max functions update "both" objects at the same time

should it not be?

    def calculateBoundingBox(self):
        min = self.getRealPosition(self.nodes[0])
        max = self.getRealPosition(self.nodes[0])

[pointhi]

There is a more fundamental problem in this code. The getRealPosition method does not exist in this class, because it does not inherit from Node.