Switching between floors in the BIM viewer used to hide geometry above or below a level — now the viewer slices the model precisely at the selected floor's elevation, giving you a clean, floor-plan-style cross-section without losing context.
When you select a level from the level controls in the BIM viewer, a section plane cuts the model at that floor's elevation. At the same time, the camera automatically shifts to a top-down orientation, so you're looking straight down at the exposed floor — the same perspective you'd use to read a traditional floor plan. Color adjustments accompany the cut to keep the geometry readable.
To use it: open a multi-level model in the BIM viewer, then pick a floor from the level selector. The section plane and top-down camera activate together. Switch to a different level and both update immediately. To return to the full 3D model, deselect the current level — the section plane clears and the camera returns to its previous state. Standard navigation controls (orbit, zoom, pan) work as usual when no level is selected, and orbit remains available within a level view if you need to tilt the perspective.
This replaces the previous toggle-visibility approach. Where visibility toggling would sometimes leave geometry from adjacent floors visible or obscure the floor you were reviewing, the section plane cuts cleanly at the actual elevation recorded in the model — so what you see reflects what's there at that level. This is particularly useful when verifying room layouts, checking clearances, or handing a specific floor view to a team member.