[mkgmap-dev] patch to write polygons in decreasing order

Sun Oct 23 15:28:12 BST 2016

Just an observation.

To me it only makes sense to order polygons if the user is not using a TYP
file.

TYP files effectively attribute a draworder to different types of polygons.

Sorting polygons into size will work if the user has plotted two polygons of
the same type, ie buildings on top of buildings - which is very unusual to
say the least

It is true that some 'old' non NT Garmin TOPO maps came with a TYP file
which did not give polygons a draworder - indeed, you could quickly mess up
the layers by giving one or two polygons a draworder.

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