First off, I love Trimble Connect and the possibilities it will bring moving forward. I am running Trimble Connect on my HoloLens and am in need of some assistance with a few issues I am having... Will there be some how-to guides coming out in the future on optimizing Revit models or Sketchup models to be viewed through the Lens? I have loaded a variety of models to my account and they look and work great from the online browser. When I view on the Lens I feel like anything over 100 MB just simply wont work or is verrrrry laggy/buggy. The smaller models work and operate fine and I feel like there's really not much of a difference between them and the larger ones besides size. If there were a guide with recommended settings, size limits, etc that would be very helpful. I am having my Revit coordinator playing the guess and check game as she continues to try and reduce the size on these and it is getting frustrating for both of us.
Great question! I feel your frustration. Model size and optimization is simultaneously the most important problem and the biggest area of opportunity for us on mixed reality today. In fact, we have a whole team of developers working on increasing these capabilities in our apps.
We plan to have some better walkthrough guides/videos out for the app in the coming weeks, which will be posted on this community and YouTube. Stay tuned.
It is, however, difficult to write in stone "what works" and "what doesn't", as it's not as simple as saying "anything less than 100mb will work". The size limitations are more directly tied to polygon/edge counts and densities. For example, you may notice that large models work much better in 1:1 scale than tabletop. This is because the HoloLens is only rendering where you're looking at any given time, so at 1:1 scale you're only rendering a slice of the pie versus the entire model at once. The team at SketchUp recommends tabletop models to stay under 200,000 edges, though you may be able to get away with more in immersive, as you're only taking a "slice of the pie" at a time.
The same numbers hold for Trimble Connect for HoloLens, too, though the app may be able to handle slightly larger models since SketchUp Viewer is rendering a lot more aesthetics like imagery and textures. Our team is actively working on new ways to load and render models and more properly deal with memory management, so we expect to continue to increase the model size capabilities as the year progresses.
With all of this said, here are a few best practices / thoughts to keep in mind:
Hopefully, that gives a bit of help in the interim while we work to build out our documentation further. If you have more questions, feel free to reach out to me at firstname.lastname@example.org
Product Marketing Manager
Hi Mr. Lawver,I'm an XR10 user. I find some models cannot be downloaded and launch on TCH. For example, a 170 MB skp. file.But sometimes a small model which file size less than 100 MB still lose details.Do you have any standard or suggestion about model size or object numbers compare to file format?ScottApplication engineer
Zhong Han Tec. Ltd.
Hello ScottWhen TCH loads a model we analyze the model and automatically optimize/reduce/adjust it to maintain 60 FPS viewing experience and launch the section tool so the user can pare down the model to an area of interest. Our goal is to keep the framerate at 60 fps at all time, so for very large/polygon intensive models you may not see all details as soon as you load the model and this is by design; to keep the framerate at 60 fps. If you are using TCH v 3.0 or later on XR10/Hololen2. We support loading models of any size .
In TCH after you load a Model, you can work with it in 2 different modes
Here is a workflow that will allow you to see most of the objects in the model while keeping the framerate at 60 FPS. The following steps could be used to visualize most of the objects depending on the model.
Step 1: Launch the Model
Step 2: Section the Model. The section tool is automatically launched if the model is classified as needing reduction to keep the frame rate
Step 3: Go to immersive Mode
Hope this helps. Try out the section tool in your workflow and let us know if you have any questions