Importing Feature Lines from Civil3D into Dynamo using Python

Civil3D
4

“”"
Copyright 2019 Autodesk, Inc. All rights reserved.

This file is part of the Civil 3D Python Module.

“”"
author = ‘Paolo Emilio Serra’
copyright = ‘2019’
version = ‘1.0.0’

def get_featurelines():
“”"
Extract the Land Feature Lines in the document and converts them into Dynamo PolyCurves
:returns: Dynamo PolyCurves
“”"

global adoc
global cdoc

output = []

with adoc.LockDocument():
	with adoc.Database as db:
		with db.TransactionManager.StartTransaction() as t:
			bt = t.GetObject(db.BlockTableId, OpenMode.ForWrite)
			btr = t.GetObject(bt[BlockTableRecord.ModelSpace], OpenMode.ForWrite)
			
			fls = []
			for oid in btr:
				fl = t.GetObject(oid, OpenMode.ForRead)
				if isinstance(fl, FeatureLine) and fl.SiteId == ObjectId.Null:
					pts = []
					for pt in fl.GetPoints(FeatureLinePointType.AllPoints):
						pts.append(DS.Point.ByCoordinates(pt.X, pt.Y, pt.Z))
					if len(pts) > 1:
						fls.append(DS.PolyCurve.ByPoints(pts))
			if len(fls) > 0:
				output.append(fls)
			
			for sid in cdoc.GetSiteIds():
				site = t.GetObject(sid, OpenMode.ForRead)
				fls = []
				for fid in site.GetFeatureLineIds():
					fl = t.GetObject(fid, OpenMode.ForRead)
					pts = []
					for pt in fl.GetPoints(FeatureLinePointType.AllPoints):
						pts.append(DS.Point.ByCoordinates(pt.X, pt.Y, pt.Z))
					if len(pts) > 1:
						fls.append(DS.PolyCurve.ByPoints(pts))
				if len(fls) > 0:
					output.append(fls)			
return output
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