I am attempting to extract information from Revit regarding analytical surfaces. When we export a gbxml, Revit breaks the information down way too much, making it unfeasable to use with HAP. Therefore, I decided to take the matter into my own hands and extract what I need instead.
This is all the information I can take from the model:
Which is pretty good but I also need:
-Which space it belongs to
-Which direction it is facing
I’ve already tried using a location code block but that doesn’t return anything. And to my surprise, it has nothing related to the space.
May be more efficient ways for this, but i’d try these:
If your spaces are aligned with your rooms (or you have a list of rooms contained by each space) you can use the element.room node in the rhythm package. The node might even work for spaces (or you might be able to modify it) but I don’t know and can’t test it. Alternatively you could thicken the surface in both directions with a distance 2x the wall thickness and then do a run a “does intersect” with the geometry of every space, filtering spaces not intersected and then pulling the data that way. Fairly computationally intensive though so I hope you have some time to let it think.
For direction try getting the normal from the surface and compare that vector to the vector for true north.
Not really. The wall count limitation on HAP is really frustrating and honestly, the easier solution is likely to either export and dumb down gbxml and also use another software for calcs (maybe Trane Trace).
Anyone using Trane Trace 3D? If I understand correctly, Trace 3D will import a gbxml file, but will not export one so data can be imported back into Revit. This seems like a great use for Dynamo.
Interested to see what others are doing with this type of workflow!
