Deprecate the GetCounts() method in Keys objects
The vtkm::worklet::Keys
object held a SortedValuesMap
array, an
Offsets
array, a Counts
array, and (optionally) a UniqueKeys
array.
Of these, the Counts
array is redundant because the counts are trivially
computed by subtracting adjacent entries in the offsets array. This pattern
shows up a lot in VTK-m, and most places we have moved to removing the
counts and just using the offsets.
This change removes the Count
array from the Keys
object. Where the
count is needed internally, adjacent offsets are subtracted. The deprecated
GetCounts
method is implemented by copying values into a new array.