[mapserver-users] Truetype font rendering changes?

Stephen Woodbridge woodbri at swoodbridge.com
Mon May 7 16:55:27 EDT 2012


Hello Johan,

I have created bug #4308
https://github.com/mapserver/mapserver/issues/4308
and put a link to your tar file on my server.

Thank you for taking the time to create a simple test case, I'm sure 
this will accelerate getting it resolved.

-Steve W

On 5/7/2012 4:06 PM, Johan Forsman wrote:
> Hello Steve and thanks.
>
> I adapted your example and packaged a small test case following your
> instructions. It's attached. I ran it with MS54 under FGS95 on Linux
> and also with MS60 under the "main" environment on the same server,
> as well as with MS60 under MS4W3 on Windows Server 3008. I see the
> same rendering differences as in my general case originally reported.
> I hope the attachment provides the data you need.
>
> Thanks again, Johan.
>
> -----Original Message----- From:
> mapserver-users-bounces at lists.osgeo.org
> [mailto:mapserver-users-bounces at lists.osgeo.org] On Behalf Of Stephen
> Woodbridge Sent: Monday, May 07, 2012 10:57 AM To:
> mapserver-users at lists.osgeo.org Subject: Re: [mapserver-users]
> Truetype font rendering changes?
>
> Johan,
>
> You need to provide a simple test case if you want a developer to
> help diagnose this problem.
>
> I would suggest creating a simple mapfile that draws a single label
> like the following. Adjust it to your needs
>
> MAP SIZE 100 100 EXTENT 100 100 UNITS inches FONTSET "fontset.txt"
> IMAGETYPE ...
>
> OUTPUTFORMAT ... END
>
> LAYER TYPE POINT STATUS DEFAULT FEATURE POINTS 50 50 END END CLASS
> STYLE SYMBOL 0 COLOR 0 0 0 END TEXT "123" LABEL TYPE TRUETYPE FONT
> "arial-narrow" SIZE 7 COLOR 0 0 0 END END END END
>
> Test this on both servers. Also make sure you are using the same font
> file, ie copy it to your test example directory and create a new
> fontset.txt that only have this single font referenced in it. If you
> still get different results, then tar/zip up the test example and
> email it to Steve L or me and I will make it available as a link if
> you can post a link to it.
>
> -Steve W
>
> On 5/7/2012 11:31 AM, Johan Forsman wrote:
>> No. Unfortunately none of the sites are accessible from the
>> outside. The best I can do are screenshots.
>>
>> I attached two examples from the same Linux server. One is from the
>> FGS95 (MS54) environment and the other (MS60) is under the "main"
>> system environment. Both samples are of Arial Narrow 7 point, and
>> the image is rendered using the following output format:
>>
>> OUTPUTFORMAT NAME 'agg_q' DRIVER AGG/PNG IMAGEMODE RGB FORMATOPTION
>> "QUANTIZE_FORCE=ON" FORMATOPTION "QUANTIZE_DITHER=OFF" FORMATOPTION
>> "QUANTIZE_COLORS=256" END
>>
>> I freely confess to not knowing much about the various output
>> formats. This one I picked from the list some time long ago. I
>> tried other formats also, both 8- and 24-bit and both the AGG and
>> Cairo drivers, but I have not noticed any clear differences.
>>
>> Thanks for any suggestions and I'll be glad to collect additional
>> information if needed.
>>
>> Johan.
>>
>> -----Original Message----- From: Lime, Steve D (DNR)
>> [mailto:Steve.Lime at state.mn.us] Sent: Monday, May 07, 2012 9:43 AM
>> To: Johan Forsman; Donald Kerr; mapserver-users at lists.osgeo.org
>> Subject: RE: [mapserver-users] Truetype font rendering changes?
>>
>> Is that test case available someplace?
>>
>> -----Original Message----- From:
>> mapserver-users-bounces at lists.osgeo.org
>> [mailto:mapserver-users-bounces at lists.osgeo.org] On Behalf Of
>> Johan Forsman Sent: Monday, May 07, 2012 8:32 AM To: Donald Kerr;
>> mapserver-users at lists.osgeo.org Subject: RE: [mapserver-users]
>> Truetype font rendering changes?
>>
>> Thank you for the suggestion however I regret to report that there
>> is no discernible difference in the appearance of the text when
>> using cairopng in the Windows environment. I have also created a
>> test case using MS6 on the same Linux server (but outside the FGS95
>> environment) as my MS5.4 and the text is rendered exactly the same
>> as on the Windows platform, with the same reduced legibility.
>>
>> Thanks, Johan.
>>
>> -----Original Message----- From: Donald Kerr
>> [mailto:donald.kerr at dkerr.co.uk] Sent: Thursday, May 03, 2012 12:39
>> PM To: Johan Forsman; mapserver-users at lists.osgeo.org Subject: RE:
>> [mapserver-users] Truetype font rendering changes?
>>
>> Johan,
>>
>> Have you tried "cairopng" as an alternative to AGG?
>>
>> Regards,
>>
>> Donald
>>
>>
>> -----Original Message----- From:
>> mapserver-users-bounces at lists.osgeo.org
>> [mailto:mapserver-users-bounces at lists.osgeo.org] On Behalf Of
>> Johan Forsman Sent: 03 May 2012 16:07 To:
>> mapserver-users at lists.osgeo.org Subject: [mapserver-users] Truetype
>> font rendering changes?
>>
>>
>> Hello All:
>>
>> I am in the process of migrating from MapServer 5.4 (FGS95 on
>> Linux) to MapServer 6 (MS4W3 on Windows Server 2008 R2). Most
>> things are migrating well however I have a peculiar TrueType font
>> rendering issue where the readability on the new system is far less
>> than on the old system. I have attached two screenshots taken at
>> the same scale to illustrate the issue. In these images the parish
>> labels are Arial Bold Italic 6 pt., the interstate shields are
>> Arial 8 pt., and US highway shields are Arial Narrow 7 pt. The TTF
>> files and the MAP files were copied directly from the old system to
>> the new system. I have tried with antialias on and off in the label
>> definition and with a couple of different AGG image output formats
>> but there are no visible differences.
>>
>> I would really appreciate any suggestions or pointers where to
>> investigate.
>>
>> Thanks! Johan Forsman Geologist Engineering Services LDHH-OPH-CEHS
>> 225.342.7309
>>
>>
>>
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>>
>>
>>
>>
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