[mkgmap-dev] question regarding MapRoadFrom GerdP gpetermann_muenchen at hotmail.com on Tue Oct 15 17:06:43 BST 2013
Hi Steve, I'd like to change the way how MapRoad objects are handled in the sub division split process. Current implementation is like this: 1) StyledConverter creates a MapRoad instance with max. 250 points, if a road has more points, multiple instances are created, each with its own RoadDef. 2) When the sub divisions are created, a MapRoad is never split, so the final result is that each instance is written to exactly one sub division. The Garmin format seems to imply that we should rather split the MapRoad to match a given bbox of a sub division. This will produce smaller img files because the offsets to the sub division centers are smaller, and if we allow to start with MapRoad instances having > 250 points, we also have fewer NOD entries. I tried to implement this, but I can't find a nice way to store the information about the order of the segments of a road. This is needed when finally the RoadDef.addPolylineRef() method is called. I think that we either have to make sure that each part of a road is processed in the correct order, or we have to restore the order after all the filters where used. (For the different levels, a road will be split into different parts, if a road goes out and in we can have multiple segments in one sub div, not directly connected to each other) I have no idea yet how to do this. Can you help? Gerd -- View this message in context: http://gis.19327.n5.nabble.com/question-regarding-MapRoad-tp5781633.html Sent from the Mkgmap Development mailing list archive at Nabble.com.
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