instanceID =/= mapID

[myrroddin]

Reading this thread got me thinking: Astrolabe can handle adding icons to instance maps just as well as world and mini maps. However, I am slowly writing my own replacement library.

If I created an API, say lib:AddIcon(mapID, mapFloor, icon) –– going simple here, passing an instance like the Garrison or a dungeon isn't going to work, as instanceIDs and mapIDs are not the same. Is there a suggested method to accomplish this?

Sure, I can look at Astrolabe, and often do, but, and I could be wrong, Astrolabe strikes me as overly complex.