When generalizations are calculated by tile we need to know which extent to work on. If we are not working with a full planet we get that information from the (estimated) extent of the source layer. This adds support for determining the extent for raster-based source layers.
This is needed when we generalize source layers into rasters and then use those rasters as source for even lower level tiles.
When generalizations are calculated by tile we need to know which extent to work on. If we are not working with a full planet we get that information from the (estimated) extent of the source layer. This adds support for determining the extent for raster-based source layers.
This is needed when we generalize source layers into rasters and then use those rasters as source for even lower level tiles.