feat: Provide lower zoom-levels

eddy-geek commented 2 years ago

Currently we serve only z16 (the app may downscale a bit, eg alpine display z15 too) Exact implementation to be defined, some combination of steeper slopes only and higher transparency, e.g.:

Steeper slopes only: start around 13/13/28/40/49/53° for z16/15/14/13/12/11
Higher transparency: eg 70% at z13-14, 40% at z11-12 (transparency need to be encoded in the PNG palette, size increase should be low, level 16 can remain opaque)
up to which zoom-levels? z11 might not make sense, TBD

eddy-geek commented 2 years ago

done with "eslo4near" palette

eddy-geek commented 2 years ago

Reopening until pmtiles is updated

eddy-geek commented 1 year ago

[] CAlps is missing the white tiles at lower zooms to avoid the "blue box" in AlpineQuest [] CAlps Grey only layers (z<=13) are ugly, remove them) [] generate a z=13 grey-only palette in a separate file to test it [] then replace/remove z=13 in both WAlps & CAlps

eslopemap / eslope

feat: Provide lower zoom-levels #4