[mapserver-dev] Thoughts on ANGLE FOLLOW results

[Alan Boudreault]

IIRC, the label placement code had been written by someone that it not 
reliable anymore. In a few parts... nobody really knew what the code was 
doing. Should we rethink/rewrite the label placement code rather than trying 
to patch it with some letterspacing hack or something similar, like I tried in 
the past? 

Alan

On August 16, 2010 10:26:50 am Lime, Steve D (DNR) wrote:
> Correct. It's as good as you're gonna do with the code as it sits. Looks
>  like GeoServer punts in the case when chars overlap. It's been a bug for
>  some time now and really needs to be fixed, even if that fix is simply to
>  detect overlap and punt...
> 
> -Steve
> 
> -----Original Message-----
> From: mapserver-dev-bounces at lists.osgeo.org
>  [mailto:mapserver-dev-bounces at lists.osgeo.org] On Behalf Of Brent Fraser
>  Sent: Monday, August 16, 2010 8:59 AM
> To: Jeff McKenna
> Cc: 'MapServer Dev Mailing List'
> Subject: Re: [mapserver-dev] Thoughts on ANGLE FOLLOW results
> 
> Jeff,
> 
>    I think the problem is related to
>       http://trac.osgeo.org/mapserver/ticket/2221
> (and http://trac.osgeo.org/mapserver/ticket/2612)
> 
> Best Regards,
> Brent Fraser
> 
> Jeff McKenna wrote:
> > For the FOSS4G WMS Benchmarking exercise we have to label a contour line
> > layer, curved along the lines.  I am comparing MapServer's results with
> > GeoServer (attached). I am trying to tweak the LABEL object parameters,
> > but I am still not happy with the MapServer results.
> >
> > Should I be satisfied with these results?  Or is this is bug in our
> > MapServer label logic?  Please give me your thoughts. (notice the
> > mangled '730' label in the middle, and the upside down '550' in the
> > bottom right)
> >
> >        LABEL
> >          COLOR  230 183 119
> >          FONT sans
> >          TYPE truetype
> >          SIZE 12
> >          PARTIALS FALSE
> >          OUTLINECOLOR 255 255 255
> >          OUTLINEWIDTH 5
> >          ANGLE FOLLOW
> >          MINFEATURESIZE AUTO
> >          BUFFER 3
> >        END
> >
> > geoserver:
> > http://12.189.158.78:8080/geoserver/wms?EXCEPTIONS=application%2Fvnd.ogc.
> >se_inimage&LAYERS=shp_alllayers_label&STYLES=&FORMAT=image%2Fpng&SERVICE=W
> >MS&VERSION=1.1.1&REQUEST=GetMap&SRS=EPSG%3A4326&BBOX=2.0887561798092,41.69
> >3440914151,2.1016307830806,41.706315517423&WIDTH=600&HEIGHT=600
> >
> >
> > mapserver:
> > http://12.189.158.78:8081/cgi-bin/mapserv_label?MAP=/benchmarking/mapserv
> >er/spain-shapefiles.map&LAYERS=vector_benchmarking_2010&FORMAT=image%2Fpng
> >&SERVICE=WMS&VERSION=1.1.1&REQUEST=GetMap&STYLES=&EXCEPTIONS=application%2
> >Fvnd.ogc.se_inimage&SRS=EPSG%3A4326&BBOX=2.0887561798092,41.693440914151,2
> >.1016307830806,41.706315517423&WIDTH=600&HEIGHT=600
> >
> >
> > -jeff
> 
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-- 
Alan Boudreault
Mapgears
http://www.mapgears.com