The 3D point collection object class. This class is used to manage all nodes on the line, area object or its sub-objects. Since the line, area object or its sub-objects are all directed, the point collection object is an ordered collection of points.
Methods
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Add a 3D point object to the 3D point collection object.
Name Type Description point3D
Object 3D point object. Returns:
If it succeeds, it returns the index number of the added child object; if it fails, it returns -1. -
Clear all elements in the 3D point collection object.