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[mkgmap-dev] Commit: r1277: Improve handling of arc headings.

From svn commit svn at mkgmap.org.uk on Thu Oct 15 09:49:23 BST 2009

Version 1277 was commited by markb on 2009-10-15 09:49:23 +0100 (Thu, 15 Oct 2009) 

Improve handling of arc headings.

We now write curve data that conveys an arc's final heading - the format
is fairly well understood but if this causes any breakage use the temporary
option --no-arc-curves to disable the arc data.

Added --adjust-turn-headings option that, wherever possible, ensures
that turns off to side roads change heading sufficiently so that the
GPS believes that a turn is required rather than a fork. This also avoids
spurious instructions to "keep right/left" when the road doesn't actually

Added --report-similar-arcs option that will issue a warning if more than
one arc exists between two nodes and the arcs follow similar
(hopefully, identical) paths.

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