xeolabs

Don't use xeokit input.on(..). We need to get the mouse button and ignore when not left button.

Only left click should do that.

Need to work out modes for picking in relation to object effects. Possibilities: * Hide tool able to pick both opaque and xrayed objects * Click-drag-pivot-orbit only picks non-xrayed objects...

This way, we can, for example, view-fit an object in 3D, then when we transition to 2D, the object remains the focus. Same for transition from 2D to 3D. Otherwise,...

1. Load a model 2. Hide a small number of objects 3. Save a BCF viewpoint, in which the visibility exceptions are the hidden objects 4. Load a second model...

The event would fire when the label of any measurement is clicked, to enable a UI to highlight the measurement in a menu

Within the ````xeokit-sdk```` example models in ````./assets/models/xkt````, we currently just replace certain XKT files with the most recent version of whatever was created with the best conversion pipeline for that...