xeolabs

Hi, this sounds like a xeokit issue, since the Viewer should never allow those counts to mismatch like that - I'll investigate. Would it be OK with you if I...

I tried to reproduce this issue by adding the NavCubePlugin to the [BCF_LoadViewpoint](https://xeokit.github.io/xeokit-sdk/examples/#BCF_LoadViewpoint) and it seems to work OK. Must be something special about the model placement? Possibly a difference...

Feel free to add it in a PR, should be fairly straightforward.

@aothms @bastienmenis sounds like a flexible solution - means exposing xeogl bits through the BIMSurfer API though, which are so far encapsulated - if that's OK with everyone, that would...

@aothms - (just a general thought on extensibility in future) we could think of the viewer as being a container of xeogl components, that internally creates and manages their lifecycles,...

I can extend xeoengine to reduce FPS while the model loads, or even just suspend rendering. I'd better profile the viewer (performance and memory) on some of these bigger models...

@rubendel I've modified the viewer to render at 4 FPS while models are loading. That can be tweaked [here](https://github.com/opensourceBIM/BIMsurfer/blob/master/bimsurfer/src/xeoViewer/xeoViewer.js#L235) if necessary.

Sorry @rubendel the model I loaded was actually from the experimental server - [see this gist](https://gist.github.com/anonymous/01d1907f310efdbaada97b959e90d5ee) for details. The camera controls work OK with a randomly-generated bunch of boxes, so...

I'll get some comments in here on how the camera work in a day or two @bastienmenis . Then you can review and decide if you need to roll your...

Currently trying out a new highlight effect in commit https://github.com/opensourceBIM/BIMsurfer/commit/f03a951acd1c4d4b1dc31b01236cb8c09dab7d74 For each highlighted object, I create a another object that has the same geometry and modelling transform, but rendered after...