I want to enable Navit to use
interpolated house numbers from OpenStreetMap - see
Ticket #1177.
I have looked at the existing code, and I'm rather confused (as described in the ticket):
The code reads the map item attributes attr_house_number_left* and attr_house_number_right* to find the house number range to interpolate. However, attr_house_number_left*/attr_house_number_right* is not used anywhere else in Navit's code. I don't see how code can work that reads an attribute that no other code uses/writes. So to me it looks like that code never worked.
Strangely, there are quite a few commits (like
rev.3564) which mention "interpolation" in the commit message, and add the code that uses attr_house_number_left/right*. It seems strange to write so much code and produce something that just cannot work.
So how does the existing interpolation code work? Where does it get the information about which house numbers to interpolate? Or did it just never work?
