Random Crossing on Sphere

Tutorial : https://youtu.be/NWVq7SAe2zI

Grasshopper script contains 'Construct Point', 'Line SDL', 'Surface/Curve', 'Evaluate Surface', 'Project', 'Surface Split', 'Populate Geometry', 'Surface Closest Point', 'Rotate 3D', 'Brep Edges', 'Brep/Plane', 'Pipe'.