SV: [mapserver-users] Rendering line crossing iteslf

[Niels-Peter Jensen]

Hi Thomas

Thanks for the quick answer.

We cannot make the style work in the mapfile and have to place it in the
symbol file. By the way, we are using Mapserver 5.4.2.

But anyway, I don't think it solves our problem. 
We don't have any "bridge" in our line data, it is just a single line
feature that crosses itself.

Regards 
Niels-Peter


-----Oprindelig meddelelse-----
Fra: thomas bonfort [mailto:thomas.bonfort at gmail.com] 
Sendt: 11. maj 2011 12:14
Til: Niels-Peter Jensen
Cc: mapserver-users at lists.osgeo.org
Emne: Re: [mapserver-users] Rendering line crossing iteslf


An undocumented and "not guaranteed to work in future versions" is to trick
mapserver in not drawing the cached base style for bridge lines. As you are
avoiding the line caching mechanism, you have to tweak the linecaps for the
base style.

CLASS
   EXPRESSION ([bridge]=1)
   STYLE
   END
   STYLE
      color black
      width 5
      linecap butt
   END
   STYLE
      color yellow
      width 3
      linecap round
   END
   STYLE
      color black
      width 1
   END
END

I haven't tested this recently, so please keep in touch if this solves your
problem or not.

regards,
thomas

On Wed, May 11, 2011 at 11:40, Niels-Peter Jensen <npj at i-gis.dk> wrote:
> Hi users
>
> We have a problem in rendering a route based on a line feature.
>
> When we use the common way to do that, by using two styles, with a 
> thick black line that defines an outline, and a thinner defying the 
> road center, we will not get the desired result.
>
> But I want to show where routes cross ("bridge" intersection), and not 
> as a "normal" intersection, see the attached examples.
>
> As there is no outline definition on linefeatures I can't se how that 
> can be done in a simple way.
>
>
> Niels-Peter
> I-GIS
>
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