[Mapserver-dev] Re: 3.7 and native image rendering support

[Administrator]

This is a bit late, but...

I've been using nothing but PNG files as output, and I have local
changes that allow me to render layers with alpha blends.

What is the alternative to PNG output files if this support is
deprecated ?

IMHO, this seems like a rather large change to start at this late date
in the 3.7 development cycle, as it's core functionality.

John Novak

-----Original Message-----
From: Steve Lime [mailto:steve.lime at dnr.state.mn.us] 
Sent: Friday, February 07, 2003 2:55 PM
To: warmerdam at pobox.com
Cc: Mapserver-dev at lists.gis.umn.edu
Subject: Re: [Mapserver-dev] Re: 3.7 and native image rendering support


The PNG and GIF support are pure fluff in my mind. I can't imagine
people use them much. 
I've always considered a base version of MapServer to be made up of GD
and LibTiff and perhaps Freetype. That's just my history I guess.

3.7 is not ready, so now's the time. I'm still fixing joins (almost
done) but graticule code, oracle spatial fixes and I imagine other stuff
are still being finalized. EPPL7 OGR support would be crucial for
several groups here in MN.

I can ditch the old drivers and screw around with msDrawRasterLayer, as
you know I'm not 
afraid to dive right in. The 8-bit/24-bit stuff is complicated so this
would have to make life easier...

Steve

>>> Frank Warmerdam <warmerdam at pobox.com> 02/07/03 04:40PM >>>
Steve Lime wrote:
> Currently a lite version requires libtiff anyway, and since you're 
> distributing binaries it doesn't seem that bad. Building GDAL from 
> source may be a pain though. (Out of curiosity does the default build 
> support LZW TIFF or would that require a custom
> build?)

Steve,

Why does a lite version require libtiff?  The default build of GDAL's
internal libtiff TIFF driver supports decompressing LZW but not
compressing them.

> My vote is for simplification...

That's an important vote.  When would we strip away stuff?
Conservatively I would like to see such a change happen post-3.7 though
that puts us in the ackward position of possible releasing a 3.7 with
some buggy drivers.

Also, who would implement this?  I guess if we just strip out everything
bug GDAL it wouldn't be a big job.

Best regards,

-- 
---------------------------------------+--------------------------------
---------------------------------------+------
I set the clouds in motion - turn up   | Frank Warmerdam,
warmerdam at pobox.com 
light and sound - activate the windows | http://pobox.com/~warmerdam 
and watch the world go round - Rush    | Geospatial Programmer for Rent




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