How to get all the line which connected with a point in ghpython?

[AndersDeleuran]

@zmaomao981

but I don’t know how to with GH-python to get the point B and C.

You could use the Geometry Pipeline to dynamically read geometry from Rhino layers. And then feed this to your GHPython component. As for the point ordering algorithm, here’s one approach:

Sorting points clockwise

Here’s another approach (fitting a plane through the points and sorting the points by angles within the plane): [0%20Educational%20-%20%5BPerspective%5D] 160825_SortPointsRadially_GHPython.gh (3.9 KB)

Here’s a quick implementation:

200504_SortsPointRadially_00.3dm (32.0 KB) 200504_SortsPointRadially_00.gh (5.3 KB)