Pointer ID to normalize, negative or not.
The normalized, non-negative pointer number. Returns the same ID as given if it was already normalized.
fetch for information on the difference between the values. armedPointerID for a function to get the ID of the armed pointer.
Each HoverPointer loaded into HoverChain has two values, under two different ID numbers. This function converts either number into the original one.
Since the IDs are assigned in a consistent, deterministic manner, the pointer does not need to be loaded for this function to work.