https://github.com/sunpazed/garmin-tilemapper

https://forums.garmin.com/developer/connect-iq/f/discussion/195648/tilemapper-tool-for-tile-mapped-anti-aliased-graphics

https://forums.garmin.com/developer/connect-iq/f/discussion/338987/new-personal-graphics-tool-for-garmin?pifragment-1298=3#1644653