[mapserver-users] Draw roads WITHOUT anti-aliasing
Eichner, Andreas - SID
Andreas.Eichner at sid.sachsen.de
Mon Nov 6 05:33:09 PST 2017
Ah, you need libxml2, so enable it: -DWITH_LIBXML2=ON
> -----Ursprüngliche Nachricht-----
> Von: Erik H [mailto:erik.h11.01 at gmail.com]
> Gesendet: Montag, 6. November 2017 14:29
> An: Eichner, Andreas - SID
> Cc: mapserver-users at lists.osgeo.org
> Betreff: Re: [mapserver-users] Draw roads WITHOUT anti-aliasing
>
> Thanks for looking into this, Andreas, but I tried again and I'm still
> getting errors.
>
>
>
> This is my script:
>
> git pull
> rm -Rf build
> mkdir build
> cd build
> export JAVA_HOME=/usr/java/jdk
> export PYTHON_INCLUDE_DIR=/usr/include/python2.6/
> export PYTHON_LIBRARY=/usr/lib64/python2.6/config/libpython2.6.so
> export GDAL_DIR=/usr/local/src/gdal-2.1.3/
> cmake -DCMAKE_PREFIX_PATH=/usr/local/ WITH_GDAL=$GDAL_DIR -
> DWITH_FRIBIDI=OFF -DWITH_WFS=OFF -DWITH_WCS=OFF -
> DWITH_PROJ=/usr/local/lib -DWITH_LIBXML2=OFF WITH_POSTGIS=/usr/bin
> -DWITH_CLIENT_WFS=OFF -DWITH_WMS=OFF -DWITH_CLIENT_WMS=OFF
> -DWITH_CURL=OFF -DWITH_SOS=OFF -DWITH_PHP=OFF -
> DWITH_PERL=OFF -DWITH_RUBY=OFF -DWITH_JAVA=ON -
> DWITH_CSHARP=OFF -DWITH_HARFBUZZ=OFF -DWITH_PYTHON=ON -
> DWITH_GEOS=0 -DWITH_SVGCAIRO=OFF -DWITH_ORACLESPATIAL=OFF
> -DWITH_CAIRO=OFF -DWITH_THREAD_SAFETY=ON -DWITH_FCGI=OFF -DWITH_GIF=0
> ../ >../configure.out.txt
> make
>
> -->
> ....
> [ 61%] Building C object CMakeFiles/mapserver.dir/mapmetadata.c.o
> /home/xxxx/work/mapserver/mapmetadata.c:41: error: expected ‘=’, ‘,’,
> ‘;’, ‘asm’ or ‘__attribute__’ before ‘_msMetadataGetCharacterString’
> ...
>
>
>
> > git log
> commit bf73b5cdfe0bcecc06f8241ddf844a99b5fa7f4b
> Author: Even Rouault <even.rouault at spatialys.com>
> Date: Fri Nov 3 15:45:20 2017 +0100
>
>
>
> On Mon, Nov 6, 2017 at 3:23 AM, Eichner, Andreas - SID
> <Andreas.Eichner at sid.sachsen.de> wrote:
>
>
> Hi Erik,
>
> just tried building a freshly pulled mapserver/master and I got
> strange CMake errors too.
> In my case wiping the build/ directory recreating it solved the
> problem.
>
> HTH
>
> > -----Ursprüngliche Nachricht-----
> > Von: mapserver-users [mailto:mapserver-users-
> bounces at lists.osgeo.org <mailto:mapserver-users-bounces at lists.osgeo.org>
> ] Im
> > Auftrag von Erik H
> > Gesendet: Freitag, 3. November 2017 21:24
> > An: mapserver-users at lists.osgeo.org <mailto:mapserver-
> users at lists.osgeo.org>
> > Betreff: Re: [mapserver-users] Draw roads WITHOUT anti-aliasing
> >
> > I made some changes to the mapserver 7 source code that achieve
> what I
> > want (I'm now able to switch between aliased and antialiased
> lines,
> > based on the ANTIALIAS keyword in the STYLE section).
> >
> > I tried to put up a pull request for it but I'm having problems
> > compiling the code in the 'master' branch - compilation errors
> for
> > mapmetadata.c. My code was branched off the release-7 branch and
> did not
> > have that problem.
> >
> > The cmake command I used was
> >
> > cmake -DCMAKE_PREFIX_PATH=/usr/local/ WITH_GDAL=$GDAL_DIR -
> > DWITH_FRIBIDI=OFF -DWITH_WFS=OFF -DWITH_WCS=OFF -
> > DWITH_PROJ=/usr/local/lib -DWITH_LIBXML2=OFF
> WITH_POSTGIS=/usr/bin
> > -DWITH_CLIENT_WFS=OFF -DWITH_WMS=OFF -
> DWITH_CLIENT_WMS=OFF
> > -DWITH_CURL=OFF -DWITH_SOS=OFF -DWITH_PHP=OFF
> -
> > DWITH_PERL=OFF -DWITH_RUBY=OFF -DWITH_JAVA=ON
> -
> > DWITH_CSHARP=OFF -DWITH_HARFBUZZ=OFF -DWITH_PYTHON=ON
> -
> > DWITH_GEOS=0 -DWITH_SVGCAIRO=OFF -
> DWITH_ORACLESPATIAL=OFF
> > -DWITH_CAIRO=OFF -DWITH_THREAD_SAFETY=ON -DWITH_FCGI=OFF -
> DWITH_GIF=0
> > ../ >../configure.out.txt
> >
> >
> > Any suggestions?
> >
> > Thanks
> >
> > On Thu, Oct 19, 2017 at 11:04 AM, Erik H <erik.h11.01 at gmail.com>
> wrote:
> >
> >
> > I just did what Andreas spelled out yesterday:
> >
> > Simply changing the typedef in line 91 of mapagg.cpp from
> >
> > typedef
> mapserver::renderer_scanline_aa_solid<renderer_base>
> > renderer_scanline;
> >
> > to
> >
> > typedef
> mapserver::renderer_scanline_bin_solid<renderer_base>
> > renderer_scanline;
> >
> >
> >
> > However, I'd like to be able to switch between rasterizer
> via some
> > option in the .map file, so I'd welcome any suggestion on how to
> do
> > that.
> >
> > On Thu, Oct 19, 2017 at 10:07 AM, Lime, Steve D (MNIT)
> > <steve.lime at state.mn.us> wrote:
> >
> >
> > Glad this was figured out! What was the code
> change exactly?
> > ________________________________
> >
> > From: mapserver-users <mapserver-users-
> > bounces at lists.osgeo.org <mailto:mapserver-users-
> bounces at lists.osgeo.org <mailto:mapserver-users-bounces at lists.osgeo.org>
> >
> > > on behalf of Erik H <erik.h11.01 at gmail.com>
> > Sent: Wednesday, October 18, 2017 8:07:42 PM
> > To: Eichner, Andreas - SID
> > Cc: mapserver-users at lists.osgeo.org
> <mailto:mapserver-users at lists.osgeo.org> <mailto:mapserver-
> > users at lists.osgeo.org>
> > Subject: Re: [mapserver-users] Draw roads WITHOUT
> anti-
> > aliasing
> >
> > Andreas,
> >
> > I made that change in mapagg.cpp and it seems to
> do exactly
> > what I need. Wunderbar!
> >
> > As for providing an option to switch rasterizer
> based on an
> > option, how about reviving the FORMATOPTION 'ANTIALIAS'?
> >
> > Thanks, Erik
> >
> > On Wed, Oct 18, 2017 at 9:18 AM, Eichner, Andreas
> - SID
> > <Andreas.Eichner at sid.sachsen.de
> <mailto:Andreas.Eichner at sid.sachsen.de>
> <mailto:Andreas.Eichner at sid.sachsen.de
> <mailto:Andreas.Eichner at sid.sachsen.de> >
> > > wrote:
> >
> >
> > Nope, this won't work:
> >
> > r->default_gamma =
> atof(msGetOutputFormatOption(
> > format, "GAMMA", "0.75" ));
> > if(r->default_gamma <= 0.0 || r-
> >default_gamma >=
> > 1.0) {
> > r->default_gamma = 0.75;
> > }
> >
> > From mapagg.cpp lines 844-847 forces 0 <
> GAMMA < 1
> > Also note that MapServer uses a linear
> gamma function
> > defined as
> >
> > double operator() (double x) const
> > {
> > if(x < m_start) return 0.0;
> > if(x > m_end) return 1.0;
> > return (x - m_start) / (m_end
> - m_start);
> > }
> >
> > Where m_start is _always_ set to 0 and
> m_end is set to
> > the GAMMA value given by you (or the default 0.75).
> > I think someone should check this - to me
> it seems a
> > power function was intented...
> >
> > HTH
> >
> > > -----Ursprüngliche Nachricht-----
> > > Von: mapserver-users [mailto:mapserver-
> users-
> > bounces at lists.osgeo.org <mailto:mapserver-users-
> bounces at lists.osgeo.org <mailto:mapserver-users-bounces at lists.osgeo.org>
> >
> > ] Im
> > > Auftrag von lars.schylberg at blixtmail.se
> > > Gesendet: Mittwoch, 18. Oktober 2017
> 14:05
> > > An: mapserver-users at lists.osgeo.org
> <mailto:mapserver-users at lists.osgeo.org>
> > <mailto:mapserver-users at lists.osgeo.org <mailto:mapserver-
> users at lists.osgeo.org> >
>
> > > Betreff: Re: [mapserver-users] Draw
> roads WITHOUT
> > anti-aliasing
> > >
> > > Hi,
> > >
> > >
> > >
> > >
> >
> > > I did some quick tests with :
> > >
> > >
> > >
> > >
> > > OUTPUTFORMAT
> > > NAME "png_G0"
> > > DRIVER AGG/PNG
> > > MIMETYPE "image/png"
> > > IMAGEMODE RGB
> > > EXTENSION "png"
> > > FORMATOPTION "GAMMA=0.0"
> > > END
> > >
> > >
> > >
> > >
> > > and shp2img with options -i
> > >
> > >
> > > eg: shp2img -m 01_polygon_td_poly.map -o
> > 01_polygon_td_poly.png -i
> > > png_G0
> > >
> > >
> > >
> > >
> > >
> > > I did some tests with both polygons,
> polygon outlines
> > and lines and they
> > > all seems to have anti-aliasing as far
> as I could
> > see.
> > >
> > > Would this be an ok way to test it? I
> also have some
> > people that would
> > > like to do lines without anti-aliasing
> for a strange
> > reason.
> > >
> > >
> > >
> > >
> > >
> > > Lars Schylberg
> > >
> > >
> > >
> > >
> > >
> > > -----Originalmeddelande-----
> > > > Från: "Rahkonen Jukka (MML)"
> > <jukka.rahkonen at maanmittauslaitos.fi
> <mailto:jukka.rahkonen at maanmittauslaitos.fi>
>
> > <mailto:jukka.rahkonen at maanmittauslaitos.fi
> <mailto:jukka.rahkonen at maanmittauslaitos.fi> > >
> > > > Till: "Eichner, Andreas - SID"
> > <Andreas.Eichner at sid.sachsen.de
> <mailto:Andreas.Eichner at sid.sachsen.de>
> <mailto:Andreas.Eichner at sid.sachsen.de
> <mailto:Andreas.Eichner at sid.sachsen.de> >
> > >, "Erik
> > > H" <erik.h11.01 at gmail.com>
> > > > Kopia: mapserver-users at lists.osgeo.org
> <mailto:mapserver-users at lists.osgeo.org>
> > <mailto:mapserver-users at lists.osgeo.org <mailto:mapserver-
> users at lists.osgeo.org> >
> > > > Datum: 2017-10-18 11:13
> > > > Ämne: Re: [mapserver-users] Draw roads
> WITHOUT
> > anti-aliasing
> > > >
> > > > Hi,
> > > >
> > > > I suppose that the amount of
> antialiasing with AGG
> > is set with "gamma"
> > > parameter. Mapserver supports that at
> least for
> > polygons as documented
> > > in
> http://www.mapserver.org/mapfile/outputformat.html
> <http://www.mapserver.org/mapfile/outputformat.html>
> > <http://www.mapserver.org/mapfile/outputformat.html
> <http://www.mapserver.org/mapfile/outputformat.html> > but you could
> try
> > > if using gamma=0.0 has an effect on
> lines as well. It
> > may be that it
> > > does not because search
> > > >
> > >
> >
> https://github.com/mapserver/mapserver/search?utf8=%E2%9C%93&q=gamma&typ
> <https://github.com/mapserver/mapserver/search?utf8=%E2%9C%93&q=gamma&ty
> p>
> >
> <https://github.com/mapserver/mapserver/search?utf8=%E2%9C%93&q=gamma&ty
> <https://github.com/mapserver/mapserver/search?utf8=%E2%9C%93&q=gamma&ty
> >
> > p>
> > > e=
> > > > seems to find only something that is
> tied to
> > polygon outlines
> > > >
> https://github.com/mapserver/mapserver/blob/branch-
> <https://github.com/mapserver/mapserver/blob/branch->
> > 7- <https://github.com/mapserver/mapserver/blob/branch-7-
> <https://github.com/mapserver/mapserver/blob/branch-7-> >
> > >
> 0/renderers/agg/include/agg_renderer_outline_aa.h
> > > >
> > > >
> > > > If gamma does not work for lines then
> it could be
> > worth making a
> > > feature request for adding a new
> formatoption
> > "GAMMA_LINE=[].
> > > >
> > > > Couple of Mapnik links dealing with
> the same issue:
> > > >
> http://gis.19327.n8.nabble.com/Turning-off-anti-
> <http://gis.19327.n8.nabble.com/Turning-off-anti->
> > aliasing- <http://gis.19327.n8.nabble.com/Turning-off-anti-
> aliasing- <http://gis.19327.n8.nabble.com/Turning-off-anti-aliasing-> >
> > > td5339458.html
> > > > http://mapnik.org/mapnik-
> reference/#3.0.6/line- <http://mapnik.org/mapnik-reference/#3.0.6/line->
> > gamma-method <http://mapnik.org/mapnik-reference/#3.0.6/line-
> gamma- <http://mapnik.org/mapnik-reference/#3.0.6/line-gamma->
> > method>
> > > >
> > > > -Jukka Rahkonen-
> > > >
> > > >
> > > >
> > > > -----Alkuperäinen viesti-----
> > > > Lähettäjä: mapserver-users
> [mailto:mapserver-users-
> > > bounces at lists.osgeo.org] Puolesta
> Eichner, Andreas -
> > SID
> > > > Lähetetty: 18. lokakuuta 2017 9:57
> > > > Vastaanottaja: Erik H
> <erik.h11.01 at gmail.com>
> > > > Kopio: mapserver-users at lists.osgeo.org
> <mailto:mapserver-users at lists.osgeo.org>
> > <mailto:mapserver-users at lists.osgeo.org <mailto:mapserver-
> users at lists.osgeo.org> >
> > > > Aihe: Re: [mapserver-users] Draw roads
> WITHOUT
> > anti-aliasing
> > > >
> > > > Damn... missed attaching the images.
> > > >
> > > > > -----Ursprüngliche Nachricht-----
> > > > > Von: mapserver-users
> [mailto:mapserver-users-
> > > bounces at lists.osgeo.org]
> > > > > Im Auftrag von Eichner, Andreas -
> SID
> > > > > Gesendet: Mittwoch, 18. Oktober 2017
> 08:28
> > > > > An: Erik H
> > > > > Cc: mapserver-users at lists.osgeo.org
> <mailto:mapserver-users at lists.osgeo.org>
> > <mailto:mapserver-users at lists.osgeo.org <mailto:mapserver-
> users at lists.osgeo.org> >
>
> > > > > Betreff: Re: [mapserver-users] Draw
> roads WITHOUT
> > anti-aliasing
> > > > >
> > > > > Hi,
> > > > >
> > > > > I just meant that it seems to be
> pretty easy to
> > implement aliased
> > > > > rendering with AGG.
> > > > > Simply changing the typedef in line
> 91 of
> > mapagg.cpp from
> > > > >
> > > > > typedef
> > mapserver::renderer_scanline_aa_solid<renderer_base>
> > > > > renderer_scanline;
> > > > >
> > > > > to
> > > > >
> > > > > typedef
> > mapserver::renderer_scanline_bin_solid<renderer_base>
> > > > > renderer_scanline;
> > > > >
> > > > > turns of anti-aliased rendering.
> I've attached
> > the output of
> > > "shp2img
> > > > > -m line_simple.map" from the
> msautotests.
> > > > > An additional member in class
> AGG2Renderer for
> > the aliased
> > > rasterizer
> > > > > and conditionally passing one or the
> other to
> > render_scanlines()
> > > > > depending on some value of
> strokeStyleObj might
> > be enough.
> > > > >
> > > > > Regards
> > > > >
> > > > > > -----Ursprüngliche Nachricht-----
> > > > > > Von: Erik H
> [mailto:erik.h11.01 at gmail.com]
> > > > > > Gesendet: Dienstag, 17. Oktober
> 2017 17:34
> > > > > > An: Eichner, Andreas - SID
> > > > > > Cc: Richard Greenwood; mapserver-
>
> > users at lists.osgeo.org <mailto:mapserver-users at lists.osgeo.org
> <mailto:mapserver-users at lists.osgeo.org> >
> > > > > > Betreff: Re: [mapserver-users]
> Draw roads
> > WITHOUT anti-aliasing
> > > > > >
> > > > > > As for Andreas' remark about
> 'simply the use of
> > another scanline
> > > > > > rasterizer.' - I'm sorry but I'm
> not much of a
> > C++ developer. If I
> > > > > have
> > > > > > to do rasterizing, I'd skip
> MapServer
> > altogether and generate the
> > > > > > PNG
> > > > > in
> > > > > > Java.
> > > > > >
> > > > >
> _______________________________________________
> > > > > mapserver-users mailing list
> > > > > mapserver-users at lists.osgeo.org
> <mailto:mapserver-users at lists.osgeo.org>
> > <mailto:mapserver-users at lists.osgeo.org <mailto:mapserver-
> users at lists.osgeo.org> >
> > > > >
> > https://lists.osgeo.org/mailman/listinfo/mapserver-users
> <https://lists.osgeo.org/mailman/listinfo/mapserver-users>
> > <https://lists.osgeo.org/mailman/listinfo/mapserver-users
> <https://lists.osgeo.org/mailman/listinfo/mapserver-users> >
> > > >
> _______________________________________________
> > > > mapserver-users mailing list
> > > > mapserver-users at lists.osgeo.org
> <mailto:mapserver-users at lists.osgeo.org> <mailto:mapserver-
> > users at lists.osgeo.org>
> > > >
> https://lists.osgeo.org/mailman/listinfo/mapserver-
> <https://lists.osgeo.org/mailman/listinfo/mapserver->
> > users <https://lists.osgeo.org/mailman/listinfo/mapserver-users
> <https://lists.osgeo.org/mailman/listinfo/mapserver-users> >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > > --
> > >
> > >
> >
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> > users at lists.osgeo.org>
> >
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> <https://lists.osgeo.org/mailman/listinfo/mapserver->
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> <https://lists.osgeo.org/mailman/listinfo/mapserver-users> >
> >
> >
> >
> >
>
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