Little cluster to let you automatically close any open curve rebuilding the missing section,
merging all together with continuity ^2 condition.
Works both for planar and non planar curves.
For feedback and suggestions please text to : firstname.lastname@example.org
To add this user object, go to Files > Special Folder > User Object Folder & paste the .ghuser file into the folder. You can find the component under CalNic in the Grasshopper Plugins Tabs.
NEW UPDATE: The Cluster now is able to recognize open and closed input curves, processing the open ones, and providing you the output with:
ALREADY CLOSED CRVS