bounds
The bounding box to encompass all of the instances this group part draws.
Declaration
var bounds: BoundingBox?Discussion
If bounds is nil, RealityKit calculates a bounding box for you each time you update your instances within LowLevelInstanceData.
Automatic bounds calculation is not supported when LowLevelInstanceData is updated via replace(using:). Provide a non-nil bounds value when updating instances with Metal.