How to control Direction of Alignment

[jbrunkhorst]

Does any one have any ideas on how to control the direction of these curb return alignments? I need the direction of the alignments to be consistent regardless of the main alignments orientation to automate the process and apply the correct assembly to each section (left or right). This is pretty easy to control when manually creating a polyline and reversing the direction depending on the arrow it creates for you in model space.

[JaLo]

Hi @jbrunkhorst,

How are you defining the picture curb returns?
You could create a connected alignment so you have to specify the connection orden between alignments (direction).

[jbrunkhorst]

Is there a way to do that in Dynamo? Right now my script takes 2D polylines from a simple layout design to create the alignment, so I would like to avoid the manual alignment creation in Civil 3D.
Screenshot before the script creates alignments from these polylines:

[jbrunkhorst]

I found a connected alignment node within The Civil Nodes package. But I have tried with these inputs twice now and it runs, creates the connected alignment in model space, but Dynamo is stuck running the script. I have to force close the application each time.

[JaLo]

Are alignments long enough to find a solution given the angle between them and the input radius?

[jbrunkhorst]

It seems to be working now. Feel like I am crazy, but it works.

Next thought, if I use this these nodes to generate the offset alignment, too. Is there a way to control what the cross slope of from the parent profile in Dynamo? Seems to be a default value of 2%, which could very well work most of the time, but I would love to override that value by getting the cross slope of the assembly used in the corridor so it will always match.

[jbrunkhorst]

Ah, I figured out that the offset alignment node doesn’t even create an associated profile. I was able to recreate the profile manually though other nodes/logic.