December 2008 - mkgmap-dev - The mkgmap lists

Commit: r804: Fix indexing error in LinePreparer introduced in previous change.
by svn commit 10 Dec '08

10 Dec '08

Version 804 was commited by robert on 2008-12-10 15:56:02 +0000 (Wed, 10 Dec 2008) Fix indexing error in LinePreparer introduced in previous change.

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Commit: r803: The noname style was mostly invisible when in the night-time scheme.
by svn commit 10 Dec '08

10 Dec '08

Version 803 was commited by steve on 2008-12-10 15:42:21 +0000 (Wed, 10 Dec 2008) The noname style was mostly invisible when in the night-time scheme. So use a different code for named roads.

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Commit: r802: Write road length to NET.
by svn commit 10 Dec '08

10 Dec '08

Version 802 was commited by robert on 2008-12-10 14:42:55 +0000 (Wed, 10 Dec 2008) Write road length to NET. Unit is 2m, which appears in some examples. Possibly not always correct.

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Commit: r801: Implement overlays.
by svn commit 10 Dec '08

10 Dec '08

Version 801 was commited by steve on 2008-12-10 14:37:13 +0000 (Wed, 10 Dec 2008) Implement overlays. With this feature you can have a line style that is formed by over laying two lines. By using a TYP file with appropriate definitions, you can create some useful effects. To use this create an overlays file in the style. Lines in the file look like this: 0x142: 0x12, 0x17, 0x18 This means that if you have a line of type 0x142, it will be written as three lines with types 0x12, 0x17 and 0x18 respectively instead of 0x142.

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Re: consecutive identical points
by Robert Vollmert 10 Dec '08

10 Dec '08

On Dec 9, 2008, at 14:39, Steve Ratcliffe wrote: > On Tue, Dec 09, 2008 at 02:11:55PM +0100, Robert Vollmert wrote: >> Another possibility: MapLine.setPoints occasionally gets passed >> consecutive identical points, I assume from rounding to the same >> coordinates. I think they're being written as zero deltas, which I >> could >> well imagine throwing MapSource off. How going through GPSMapEdit >> would >> fix this, no idea. > > There is supposed to be code to skip zero deltas in LinePreparer. > This > is because even if its ok at high zooms at lower ones, zero deltas > will start to appear (althogh there are supposed to be filtered out > earlier > on too). Right, found it now. There's still possible problems: 1. The effective number of points could drop below two, even though there's a check for at least two points initially. Though from what Alex said about one-point segments, we may want to allow that anyway. 2. If coordinates in the .mp-file are rounded to the same point in map units, this might still confuse the routing graph, since we'd create different routing nodes at the same coordinate. There's then also the possibility of arcs with length zero. We should probably check for this in polish.RoadHelper, though it'd be nice if osm2mp took care of that before. Also with the Coord/CoordNode thing, this isn't quite straightforward to implement. Cheers Robert

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Commit: r800: Adapt writing of extra bits to the possibility that points disappear.
by svn commit 10 Dec '08

10 Dec '08

Version 800 was commited by robert on 2008-12-10 13:39:04 +0000 (Wed, 10 Dec 2008) Adapt writing of extra bits to the possibility that points disappear.

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Commit: r799: Name flags in polyline definitions (highest two bits in type and label offset).
by svn commit 10 Dec '08

10 Dec '08

Version 799 was commited by robert on 2008-12-10 12:50:32 +0000 (Wed, 10 Dec 2008) Name flags in polyline definitions (highest two bits in type and label offset).

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Commit: r798: Fix bug in postwriting NET offsets.
by svn commit 10 Dec '08

10 Dec '08

Version 798 was commited by robert on 2008-12-10 12:35:33 +0000 (Wed, 10 Dec 2008) Fix bug in postwriting NET offsets. The net and extrabit flags were being stored as the high bits of the 24 bit RGN offsets, causing weird errors with RGN reaching 4MB.

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Commit: r797: Some preparation work for creating the road network directly from .osm files.
by svn commit 10 Dec '08

10 Dec '08

Version 797 was commited by steve on 2008-12-10 10:37:03 +0000 (Wed, 10 Dec 2008) Some preparation work for creating the road network directly from .osm files.

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Commit: r796: Assert that we don't write zero length or too long bitstreams.
by svn commit 10 Dec '08

10 Dec '08

Version 796 was commited by robert on 2008-12-10 10:35:14 +0000 (Wed, 10 Dec 2008) Assert that we don't write zero length or too long bitstreams.

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