lunarender3

experimental openstreetmap renderer - work in progress

status: I can read PBF/MVT and make some debug images using styles hardcoded in Nim.

see demo server

More nice pictures

idea

use tilemaker (or planetiler) to make vector tiles
use this tool (lunarender3) to render map
profit! (or at least have map with nice colors)

I am far away from point 3, but I have some ideas:

instead of JSON stylesheet use Lua (hence lunarender name)
make app capable working both as localhost server and backend for public map (behind some Nginx)

my previous work

original lunarender
2018 proof of concept in Go
mapstyles which will be ported to this version

data & links

Vector tile specification (as we are implementing our own parser)
Vector tiles test suite
OpenMapTiles schema
current test data (Luxembourg from OpenMapTiles)
MAKI icons
https://www.axismaps.com/guide

TODOs & ideas

on linux it needs to be build with -d:useStdLib because of httpbeast not included or something like this
be able to write rules in lua
unreverse reversed y coordinate
handle broken tiles gracefully
bind other interfaces to be able to host demo on server
host pbf content for javascript clients
mark occupied areas to not collide text labels and icons
draw text labels from neighbor tiles to not crop labels crossing tile borders (not needed on all sources)
make "average lines" from paths to put street names on
derive zoom levels above 14 from zoom 14
optimize a lot
translate lua rules via fengari for use in Leaflet.VectorGrid
https://docs.microsoft.com/en-us/bingmaps/articles/bing-maps-tile-system
https://github.com/paulmach/orb/blob/master/maptile/tile.go
document each tile source quirks