Thank you Umberto, I'll try the patch.
----- Original Message -----
From: "Umberto Nicoletti" <[EMAIL PROTECTED]>
To: "Thomas Hammerlund" <[EMAIL PROTECTED]>
Cc: <[email protected]>
Sent: Wednesday, June 14, 2006 5:12 PM
Subject: Re: [UMN_MAPSERVER-USERS] Anti Alias Problem
On 6/14/06, Thomas Hammerlund <[EMAIL PROTECTED]> wrote:
Thank you for your reply Steve.
I'm running mapserver 4.8.3 and outputting jpegs via the gdal/jpeg
driver.
I'm using the gdal driver because the gd/jpeg driver output progressive
encoded jpegs(which i couldn't use).
Example layer:
LAYER
NAME l_koku_u
STATUS ON
TILEINDEX "ixs/shb/50000/l_koku_u_ix"
TILEITEM "location"
TYPE LINE
CLASSITEM Code
CLASS
MAXSCALE 337000
MINSCALE 85001
Name style1
EXPRESSION 'l_bbbcd'
STYLE
COLOR 240 184 53
WIDTH 1
#ANTIALIAS TRUE
END
END
END
I'm creating my image using perl mapscript. my mistake, the problem is
not
with the fonts but with the lines. when I turn style antialiasing on for
my
line layers perl throws an internal server error with no error message
from
mapserver (or perl).
The outputformat in my mapfile looks like this:
OUTPUTFORMAT
NAME jpeg
DRIVER "GDAL/JPEG"
MIMETYPE "image/jpeg"
IMAGEMODE RGB
FORMATOPTION "QUALITY=100"
EXTENSION "jpg"
END
Which antialias patch are you referring to?
This one (against gd-2.0.33):
*** gd.c.orig Wed Jun 14 10:06:22 2006
--- gd.c Mon Jun 12 12:05:28 2006
***************
*** 3032,3037 ****
--- 3032,3040 ----
static void gdImageSetAAPixelColor(gdImagePtr im, int x, int y, int
color, int t)
{
int dr,dg,db,p,r,g,b;
+ if(x<0||y<0||x>=im->sx||y>=im->sy) {
+ return;
+ }
p = gdImageGetPixel(im,x,y);
/* TBB: we have to implement the dont_blend stuff to provide
the full feature set of the old implementation */
or this one:
http://lists.maptools.org/pipermail/ka-map-users/2006-March/001069.html
The latter is probably better, as it uses a gd macro...
HTH,
Umberto
Thank you again,
Tom
----- Original Message -----
From: "Steve Lime" <[EMAIL PROTECTED]>
To: <[email protected]>; <[EMAIL PROTECTED]>
Sent: Wednesday, June 14, 2006 2:56 PM
Subject: Re: [UMN_MAPSERVER-USERS] Anti Alias Problem
> Hmmm... I'm suprised turning off style antialiasing would impact font
> antialiasing.
> They are totally unrelated.
>
> I guess we need a bit more information. What version of MapServer? Has
> the
> GD
> anti-aliasing patch been applied? What output image format?
>
> Steve
>
>>>> Thomas Hammerlund <[EMAIL PROTECTED]> 06/13/06 1:03 AM >>>
> Hi Everyone,
>
> I've been looking for a solution to this, but haven't been successful
> so
> far
> so I'm hoping someone can help.
>
> I'm using Fedora 5, and everything I need is working great. The
> problem
> is
> that when I try the same data set on Fedora 4 or Red Hat Advanced
> Server,
> anti alias doesn't work. The problem can be resolved by commenting out
> the
> antialias line, but then it makes my font and lines look too choppy.
> Has
> anyone seen this? Does anyone know if this is a Linux or a Mapserver
> problem?
>
> Thank you for your help,
> Tom
>
>
>
