[Routing] propose a new data structure for routing

[Frederik Ramm]

Hi,

hubert schmid wrote:
> If ways crossing each other without knowing
> anything about the other one, any crossing point has to be 
> recalculated. 

OpenStreetMap is topology aware. This means that if two ways cross each 
other and the place where they intersect is a routing node, then there 
WILL be an OSM node there. If they intersect without an OSM node, then 
the intersection is NOT a routing node (e.g. a bridge or tunnel).

In these cases you can calculate the position where the ways intersect 
but this is not of any use for routing.

Bye
Frederik