Very interesting. We've worked on implementing a UI to choose settings for hill shade tiles and then use gdal on the fly using the MapZen Terrain tiles (https:/

Very interesting. We've worked on implementing a UI to choose settings for hill shade tiles and then use gdal on the fly using the MapZen Terrain tiles (https://www.clockworkmicro.com/terrain-tile-styler https://www.clockworkmicro.com/terrain-tile-styler). But of course in this case the settings are still applied globally. It certainly makes sense to change the light source and azimuth regionally.