Dynamo player and sequence in which it runs

[Christhian]

Good evening, I have some small inconveniences in the script, the idea is that it works as follows:

1. elevation
   2.Solid
   And so on with several solids, but the errors I find is that the solid is generated first and then the elevation, and if I select another object it no longer works.

ELEV+HATCH.dyn (18.0 KB)

[bvs1982]

You could try the Passthrough node.

[mzjensen]

Hi @Christhian,

You’ve created what’s called a race condition by have two separate branches that are independent from one another. After the Select Objects node, the flow then branches to the Object.Geometry node and the ObjectExtensions.SetParameterValueByName. There is nothing telling the computer that it should execute one or the other first, so it’s essentially a “race” between the two. There is a high likelihood that this will lead to inconsistent results. What you need to do is add a simple gate so that you force the elevation parameter to be set before you get the geometry. This post should help.

Passthrough, how can i understand that?

It is simply just creating a list and then getting the first item in the list. So it could be rewritten as: List.FirstItem(passthrough,waitfor); Or you could even simplify it further and just do a code block with: [a,b][0]; It acts as a gate because Dynamo has to “collect” all of the items in the list before passing the contents on to the next node.

[bvs1982]

Great explanation! @zachri.jensen

[Christhian]

@zachri.jensen would it be something like that? What am I doing wrong?

[mzjensen]

Is it working how you would expect now?

[Christhian]

I think that the order is already solved when creating it, but because every time I create a solid the previous one is deleted, there is a way to request that
I’ve tried changing the name of the layer but it still doesn’t work

[mzjensen]

Ah OK, I see. That’s an issue with bindings. If you want it to generate new solids every time a new polyline is selected, you’ll need to change the binding settings. See this post.

Dynamo For Civil 3D Binding

Could someone explain to me element binding best practices for Dynamo in Civil 3D? Clearly, if no binding data is retained, dynamo will recreate objects every time the script is run. However, dynamo will store binding data in the graph, in the drawing, and in the drawing for the player; what is the application for each of these options? Say I have script that offsets a polyline. I want Dynamo to allow me to adjust the offset and not recreate the polyline every time the script is run and I want…

[Christhian]

@zachri.jensen it works for me thank you very much