With the major revision 2.0 of VTK-m, many items previously marked as
deprecated were removed. If updating to a new version of VTK-m, it is
recommended to first update to VTK-m 1.9, which will include the deprecated
features but provide warnings (with the right compiler) that will point to
the replacement code. Once the deprecations have been fixed, updating to
2.0 should be smoother.
We have been doing a better job at hiding device code (and moving code
into libraries). Smoke out source that no longer needs to be compiled by
device compilers.
`PointLocator`s have changed from being virtual objects to being trivial
objects. Part of this change means that when a worklet gets the
execution object for a point locator, it gets the actual object (or a
reference to it) instead of a pointer to an object. This means that the
new code uses the `.` operator to access the locator's features instead
of the `->` operator.
To support code still using the deprecated functionality, added a
specific `->` operator to the locator execution object to make it behave
as if it were a pointer. However, this operator is marked deprecated to
warn the user that they should modify their code to use the `.` instead.
With recent changes to `ArrayHandle`, the type for the associated array
portal is now the same across all devices. This means that almost all
exec objects no longer need to be specialized on the device types. Thus,
clean up the locator exec objects to no longer need to be templated on
device.
The newer version of `ArrayHandle` no longer supports different types of
portals for different devices. Thus, the `ReadPortalType` and
`WritePortalType` are sufficient for all types of portals across all
devices.
This significantly simplifies supporting execution objects on devices,
and thus this change also includes many changes to various execution
objects to remove their dependence on the device adapter tag.
The new name reflects better what the underlying algorithm does. It also
helps prevent confusion about what types of data the locator is good
for. The old name suggested it only worked for structured grids, which
is not the case.
