Model Bounding Boxes and Spheres must be manually calculated

Provide details on the proposal. Vanilla model bounding boxes and spheres frequently do not bound the model correctly, with bounding boxes often being considerably larger than required and bounding spheres being vastly too small. The conclusion, for now at least, is that these volumes must be manually managed. However, buttons can be provided to auto-calculate some volumes, although they will likely not be what is required.

Is your feature request related to a problem? Please describe. Calculated bounding boxes and spheres are wildly different from the vanilla ones with no clear automatic way to generate the vanilla volumes.

Pherakki / BlenderToolsForGFS

Model Bounding Boxes and Spheres must be manually calculated #108