Hi! Thilo Hannemann schrieb:
you say that the draw order of the polylines depends on 1. type and 2. id. What do you mean by id? Is that the OSM id? Or do you refer to the order the lines are written into the .IMG file?
From what I see it certainly depends on the type of the polyline, but in a way that I do not understand.
From my observations, lines (and POIs) are drawn in the order of the .osm file with preserve-order on. If you use a planet file directly, it is already sorted by OSM id, but this is coincidential, you can change it to any order you like. In my hiking map I add lines as highlighting overlays. All highlights have a higher type ids than regular ways. All lines are in the same map layer. I can control whether the highlights are drawn over or below the regular ways by putting them in the correct drawing order in the osm file. If preserve-order is off, the order is randomized by mkgamp and the drawing order on the device is also randomized. I have not observed a dependency on line type id. Observations are based on mkgmap r590 to r1001. bye Nop