[mapserver-users] AGG vs. GD: Label placement problems

[thomas bonfort]

Yes, that's exactly the problem, as there's a difference of a few
pixels between the size of the label calculated by gd and the size it
actually takes when rendered with agg. I realize now that it can cause
some quite visible problems in the case you show here (labels to the
left), as in that case the few pixels difference can cause the label
to overlap the point symbol. I'll see if I can fix this in the
days/weeks to come so this can be included in 5.2

cheers,
thomas

On Mon, Mar 17, 2008 at 8:25 PM, Daniel Morissette
<dmorissette at mapgears.com> wrote:
> Doyon, Jean-Francois wrote:
>  >
>  > Labels that are to the left of the point seem to be placed differently ... Look top-right ("Les Escoumins", "Saint Anne de Port Neuf", etc ...) for an example, though it happens all over the place I think.  Labels to the right of the point however seem ok.
>  >
>  > Is this a bug? A design change?  Can anything be done from the mapfiel to mitigate this?
>  >
>
>  A few days ago, ThomasB wrote on mapserver-dev that in AGG mode, "gd is
>  still used [...] for the calculation of label sizes (thus some subtle
>  discreptancies in label placement, mostly visible if using a label
>  backgroundcolor)":
>
>  http://lists.osgeo.org/pipermail/mapserver-dev/2008-March/006868.html
>
>  Maybe that's what your running into? Hopefully Thomas will see this and
>  comment.
>
>  Daniel
>  --
>  Daniel Morissette
>  http://www.mapgears.com/
>
>
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