Interface CellOverlayLayerOptions

Parent to attach overlay meshes to (usually the scene).

The map cells are measured against. Pass an accessor if the map instance can be swapped at runtime.

Liquid predicate (e.g. t => waterTerrainSet.has(t)). When provided, overlays on liquid cells sit on the computed water surface instead of the seabed floor, matching what the user sees.

Must match the terrain geometry's elevationScale. Default ELEVATION_SCALE.