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I am trying to load the current version of all IFC files that are stored in a given folder in BIM 360 Docs into the Forge Model Viewer.

To get the derivatives of each IFC file I am calling 

projects/:project_id/folders/:folder_id/contents?filter[hidden]=false

In the included property of this response I get

  • Items of type items:autodesk.bim360:Document that seems to be the current version, but they have no derivatives.
  • Items of type items:autodesk.bim360:File that have a derivatives, but come from files that have been moved or deleted.

If I would filter out this call to return only Documents like

projects/:project_id/folders/:folder_id/contents?filter[extension.type]=items:autodesk.bim360:Document

Then the data property seems to return all current versions of the files in that folder that I am looking for, but again it has no derivatives.

How do I get derivatives from an items:autodesk.bim360:Document type or is there another way to achieve what I'm trying to do here?

I also don't really understand the difference between the type items:autodesk.bim360:Document and items:autodesk.bim360:File, but it looks that I need the items:autodesk.bim360:Document. If anyone could explain the difference between these, that would be helpfull as well.

Joep Ronde
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1 Answers1

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Plans folder on BIM 360 shows the extracted views, which are identified as bim360:Document, while the original file is identified as bim360:File. When navigating on this folder, you need to correlate the extracted views (Documents) with the file where it comes from. This blog article described how it could be done in .NET.

Project Files folder will show only files, which is what you see on the BIM 360 interface.

As you're talking about IFC files, then you need to post a translation job to the original file (Files) and access its derivatives. In this perspective, ignore the extracted views (Documents).

Augusto Goncalves
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  • Based on the article, I've filtered the folder contents call to obtain only the visibleTypes from this folder. I don't think I should do a translation job as the IFC files are uploaded to BIM 360 docs and processed automatically which would create a derivative, right? What I do next is a GET projects/:project_id/items/:item_id/refs for each version I got in the included and filter this by bim360:File. This seems to give me the items I need and contain the derivatives in the relationships property. – Joep Ronde Jun 18 '19 at 11:07
  • Correct, you don't need to extract files on BIM 360, unless you want an additional translation (e.g. we automatically extract viewables, if you want RVT to IFC, you need to post that job) – Augusto Goncalves Jun 18 '19 at 14:20
  • A GET /projects/:project_id/versions/:version_id/refs on a bim360:Document does not return a versions:autodesk.bim360:File for documents that have been copied/moved into a folder. So I can still not get the derivatives from documents that have been copied/moved. How can I get derivatives for these? – Joep Ronde Jun 20 '19 at 09:50
  • there are no derivatives from a `bim360:Document`, this is already the derivative, in this case the extracted view – Augusto Goncalves Jun 21 '19 at 13:52
  • But that's the whole point, the 'bim360:Document' that I get from a 'GET projects/:project_id/folders/:folder_id/contents' don't contain a derivatives in the relationships. How to get the derivatives from a 'bim360:Document'? – Joep Ronde Jun 24 '19 at 07:42