In this mode, each band in the raster can have a fixed elevation
range associated with it. This is designed for data sources which
expose elevation related data in bands, eg netcdf files, such
as a raster with temperate data at different ocean depths.
This introduces a new option for specifying how raster layers
have associated elevation. It permits a fixed elevation range
to be set for the layer. It can be used when the layer has
a single fixed elevation, or a range (slice) of elevation values.
Users can set the lower and upper elevation range for the layer,
and whether the lower or upper limits are inclusive or
exclusive.
When enabled, the layer will only be visible in elevation
filtered 2d maps when the layer's range is included in the map's
z range.
Similar to the existing setting for temporal filtering of 2d layout
maps, this setting allows users to set a specific elevation/z range
for a layout map item. When set, map layers with support for 2d
z range filtering (currently point clouds and raster DEMs) will
be filtered to show only content within this range.
The z range can be data-defined, allowing differing z range
for different atlas or report features.
These flags reflect that retrieval of the provider's 2D or 3D extent
retrieval via QgsDataProvider::extent()/extent3D() are ALWAYS guaranteed
to be trivial/fast to calculate and involve absolutely no extra work.
The old sip based approach to handling property -> getter/setter
conversion is broken on sip6, so move the patching into Python.
Also fix incorrect checks in tests, and add additional test
for compatiblity code.
This mode is purely for animated map movies -- the user can set
the total number of frames, and the animation will progress
frame by frame for that number of frames, advancing the current
map settings frame at each step (also the @frame_number expression
variable).
No time based filtering of data is performed when in this mode.
starting PyQGIS
We can't use `None` as a keyword exposed to python, it's reserved.
Also move the enum to Qgis before making it part of public stable
API.
