- filtering of input layers by expressions and min/max zoom level
- custom layer names in the output
- writing of custom metadata for MBTiles output
- auto-calculate output extent (instead of defaulting to the whole world's extent)
- passing transform context to the encoder
Initial work... Currently supporting output to a directory based on XYZ template, using Mapbox vector tiles encoding.
New classes:
- QgsVectorTileMVTEncoder - low-level class that operates on a single tile, converts vector features to raw tile byte array, for internal use
- QgsVectorTileWriter - higher level class that manages generation of multiple tiles, for use by clients
- QgsVectorTileMVTUtils - assorted helper functions for MVT encoding/decoding
