Autodesk’s answer to realtime rendering from Revit is continuing its steady development. Now known as Autodesk Revit Live (formerly Autodesk LIVE), the new features include being able to choose visual styles for RPC, and support for Revit LT.
I’m wondering if 2017 will be the year that BIM content management stopped being hard 🙂 Maybe that’s going a bit far, but the fact is that there are some great content management tools out in the market now. In fact, I have spent the last few months doing some detailed analysis and comparison of these. But more on that later…
In the meantime, how do you go about integrating Manufacturer content into your Company BIM / Revit library? Its an interesting question because usually your company content may be high quality, audited, approved, and regularly updated. But the manufacturer content can sometimes leave a lot to be desired. With those thoughts in mind, the upcoming webinar about UNIFI Connect could prove to be quite helpful. Unifi are looking at ways to share manufacturer content through their already awesome platform.
This all plays into a larger conversation about BPM. Think about the recent merge of the Autodesk Seek content over to BIMobject. It is one thing to collect a lot of manufacturer content, but quite another to ensure its quality and applicability to a given user. How are you going about solving this problem? Do you use BPM at all, or do you use generic in-house content?
As we move more and more information and services to the cloud, 100% uptime becomes more and more necessary. In our BIM world, if you are running a project on C4R (Collaboration for Revit), and that cloud service goes down, the project could be severely affected.
If uptime is important, so is monitoring and reporting. You can now view the latest “health” status and history of Autodesk Cloud products using the Autodesk Health Dashboard.
This is a very useful addin coded by Matt Mason during a recent Hackathon. Basically, it lets you take a Snapshot of a Revit file at a point in time and save that info to a small database file. It is not saving pure geometry, but a lightweight set of all the useful information about the model, including parameters. Then, when you get a new file, you run the Compare function to compare that snapshot against the current model. Very cool.
So when dealing with ‘world’ coordinates in a point cloud, sometimes things just don’t work too well. I thought I had this all solved recently by using the DXF, Center-to-Center, Acquire Coordinates workflow. However, I discovered that somewhere along the line, Revit still does break down with the large coordinates. I think this is happening in between Recap and the Revit point cloud rendering engine. I was getting something that looked like this:
As you can see, the shared coordinate system is very large. In this situation, you can’t even move the point cloud into the correct location in Revit, it jumps in large increments when moving. Interestingly, Navisworks and AutoCAD both handle these large coordinates ok – appending the same data does not have the error shown above. So…
How do we fix this and make Revit happy?
Basically, we do a temporary truncation of the source data, get it into Revit, and then reinstate the appropriate coordinate system.
To truncate the data, have a look at your source point cloud information. In my case, I could identify 4 leading digits for the X and Y coordinates that were not significant:
Using EmEditor (which handles large text files very well), and its Vertical Selection feature, I was able to delete the 2781 and 6181 digits from my source data.
In effect, this transformed everything by 278100m and 6121000m. Keep these numbers in mind for future reference…
Ok, with the simplified source data in hand, I followed these steps:
Index a new RCP in Recap using the simplified data
Open surveyor DXF file in AutoCAD and manually Move all the geometry. Move the objects by the values above (278100, 6121000) towards the origin. Save As – a new DWG file with modified coordinates.
Link this modified DWG into Revit, Center-to-Center
Acquire Coordinates from it
Link the Point Cloud RCP By Shared Coordinates
Everything lines up now that the large coordinate shift error has been avoided!
Link in the original DXF and align it with the modified temporary DWG we were using
You may need to temporarily neutralize coordinates (here or here), and…
Now you can Acquire Coordinates from the original DXF and you will have reinstated the ‘world coordinates’, but the Revit point cloud rendering engine is now much happier.
Hope this helps you if you face a similar problem 🙂