Is there a node that allows you to move the endpoint of a civil 3D alignment, basically this same structure as this graph
but with an alignment. I have a script that
looks at surfaces as a runway end is extended,
it checks if cogo points are above a surface, currently I need to move the surface by moving the alignment by hand, I’d like to move the alignment end by a slider, is that possible?
Unfortunately we don’t have any out-of-the-box nodes for modifying alignment geometry, and I’m not aware of any packages either. There is a lot of complex logic going on under-the-hood when you move alignment grips via the user interface, and it’s a little harder to capture that behavior in node form. I’m not suggesting that we’ll never explore this area in Dynamo, just likely not in the near future. It would definitely be cool though if we figured out how to make it work
In the end I made it work with polyline instead of alignment, in my case it was a runway alignment, so I thought it might be possible to give new start and end points. or make an alignment from a polyline that I could move like the graph, move the polyline build a new alignment. many things we do are quicker with station offsets, but the Polycurves seem to pretty powerful.