[Kstars-devel] KStars, now with indexing!

[Jasem Mutlaq]

Hi James,

I just tried checking it out from SVN, but no luck,
it's not there (I'm not using anon). I'm not sure if
you can add htm to trunk though, maybe it should be
under 'branches'.

Looking forward to testing it out! 

Cheers,
Jasem

--- James Bowlin <bowlin at mindspring.com> wrote:

> I've just updated the kdeedu_kstars_htm branch of
> kstars.  This branch
> now includes a spatial index (HTM = Hierarchical
> Triangular Mesh) that
> speeds up drawing (when zoomed in) and greatly
> speeds up some searches.
> I've also added just-in-time updating for all
> indexed items.
> 
> Everyone is encourage to checkout this branch and
> try it.  It's been
> stable on my system for a few weeks now and I
> suspect that if the
> HTM code compiles on your system, it will run just
> fine.
> 
> The kdeedu_kstars_htm branch is a recent copy of
> kdeedu.  If you
> already have libkdeedu installed then all you need
> to do is:
> 
>   $ svn co
>
svn://anonsvn.kde.org/home/kde/trunk/KDE/kdeedu_kstars_htm
>   $ mkdir build-kstars_htm
>   $ cd build-kstars_htm
>   $ cmakekde ../kdeedu_kstars_htm
>   $ cd  kstars
>   $ make
>   $ sudo make install
> 
> where cmakekde is a Bash function defined as:
> 
>   function cmakekde {
>   cmake -DCMAKE_INSTALL_PREFIX=$KDEDIR
> -DCMAKE_BUILD_TYPE=debugfull $@
>   }
> 
> It's just the standard cmake dance.
> 
> NOTE: I just made the commit to svn.kde.org.  I
> don't know how long
> it will take for the changes to propagate to
> anonsvn.kde.org.  If
> you want/need to get the code from anonsvn you
> should wait the
> appropriate amount of time (24 hours?).
> 
> There were some large changes in the skycomponents/
> directory and also
> some large changes in data/ where the sets of
> Hipparcos, CBounds, and
> NGCIC files were each combined into the single
> files: stars.dat,
> cbounds.dat, and ngcic.dat.  The format of stars.dat
> was also modified
> to put the variable length star name after the fixed
> length genitive
> name.  The KStars program can read in the file in
> either format and a
> program is included, reformat-hip.pl, which can
> convert from one format
> to the other.
> 
> The code to do the indexing is under the htmesh/
> directory and is almost
> all written by a group from Johns Hopkins University
> and licensed under
> the modified BSD license.  I've built it on both x86
> and amd64 systems
> after fixing a few problems.  The code may not
> compile on all systems 
> (yet).  Any help in making it work on a larger range
> of systems would be 
> most welcome.
> 
> Most things outside the solar system have already
> been indexed including:
> 
>   o Stars
>   o DSO's
>   o Constellation Lines
>   o Constellation Boundaries
>   o Coordinate Grid
>   o Milky Way
> 
> Large changes to some (but not all) of the sky
> component classes were
> unavoidable. There are copious details in the file
> README.indexing in
> the skycomponents/ directory.  The important new
> classes are:
> 
>   + HTMesh      (in the htmesh/ directory)
>     - SkyMesh
> 
>   + LineListIndex
>     - CoordinateGrid
>     - ConstellationLines
>     - ConsellationBoundary
>     + SkipListIndex
>       - MilkWay
> 
>   + PolyListIndex
>     - ConstellationBoundaryPoly
> 
> 
> NOTE:  The code in kdeedu_kstars_htm was pretty old
> and it made CMake
> unhappy.  So I did an svn delete and then copied
> over all the code from 
> kdeedu (excluding the .svn directories). 
> Unfortunately I had a hard time 
> doing the commit because it kept barfing on files
> with DOS line endings.  
> I ended up deleting the contents of the marble/
> subdirectory because a
> lot of there errors were coming from there.  If this
> causes you a problem, 
> just let me know and I will give you instructions on
> how to fix it, 
> although you probably know more about it than I do.
> 
> -- 
> Peace, James
> 
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