PointCoordinate3D Objects
xfloat - The x-coordinate of the point.yfloat - The y-coordinate of the point.zfloat - The z-coordinate of the point.
from_dict
ddict - A dictionary containing point coordinate information.
PointCoordinate3D- An instance of PointCoordinate3D.
to_dict
dict- A dictionary representation of the point coordinate.

