performSetup<T> abstract method
Sets up the snapping behavior for the sheet.
This method is responsible for configuring the snapping points for the
sheet based on the provided extent. The snapping points are
returned as a SplayTreeSet of doubles, which represent the positions
where the sheet can snap to.
The generic type T represents the type of the extent.
Returns a SplayTreeSet of doubles representing the snapping points,
or null if the setup could not be performed.
- Parameter extent: The extent of the sheet, which determines the snapping points.
Implementation
SplayTreeSet<double>? performSetup<T>(MultiStateSheetExtent<T> extent);