[mkgmap-dev] Crash in NodCheck

Wed Jul 8 21:35:51 BST 2020

Hi Steve,

I found no node with low==0 and flag==0 in Garmin maps, but I think there are ones with flags==0.
I have to double check but I think there are tiles in a demo map for Hungaria.

Gerd

________________________________________
Von: mkgmap-dev <mkgmap-dev-bounces at lists.mkgmap.org.uk> im Auftrag von Steve Ratcliffe <steve at parabola.me.uk>
Gesendet: Mittwoch, 8. Juli 2020 21:57
An: mkgmap-dev at lists.mkgmap.org.uk
Betreff: Re: [mkgmap-dev] Crash in NodCheck

Hi

>  > the current code in NodCheck (NodFile.java) stops reading route nodes
> when
>  >         if (low == 0 && flags == 0)
>  >             return null;
>
> Yes your right that check is not needed, because we know the correct
> size of the section.

Sorry this is wrong; we know the size of the section but the entries are
variable size and there has to be a way to know when we have found the
last one.

I think that flags==0 is the marker.  Have you seen any Garmin map with
flags==0?

It seems to me that a node is either on the boundary or has arcs, or
else it is not a routing node.

Steve
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