[mkgmap-dev] RoadMerger

Mon Jan 6 09:46:58 GMT 2014

Hi WanMil,

two points:
1) line 517 is obsolete:
mergePoints.add(end);
It just blows up the size of the list and processing time.

2) You were right regarding closed ways and different results.
The merge may create p-shaped loops.
See way 80605369.
If the northern node 381305537 is merged first:
2014/01/06 10:20:40 Fein (RoadMerger): e:\gerd\sp_out\63240030.o5m: Merge 33134762 and 80605369 with angle 23.159455845890676
and later:
2014/01/06 10:20:40 Fein (RoadMerger): e:\gerd\sp_out\63240030.o5m: Merge 33134762 and 80605327 with angle 44.86962367701949
This produced a p-shaped road (including a loop).

If the node 374244500 is processed first, no merge
happens because this would produce a closed loop, so
the node is added to mergeCompletedPoints.

The p-shaped road is split later in StyledConverter, so this is not an error,
but obviously it makes no sense to merge first and split again later.
Maybe you see a simple solution for this?

Gerd

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