Re: [Geoserver-users] sld fill-opacity on mark in graphic graphic stroke stroke not working?

[Andrea A. <and...@ge...>]

Hi Grégoire,
I can confirm it's the case... the situation is confusing, because for a
Graphic object one can set an opacity at the Graphic level,
which does work:

                <sld:Graphic>
                  <sld:Mark>
                    <sld:WellKnownName>circle</sld:WellKnownName>
                    <sld:Fill>
                      <sld:CssParameter
name="fill">#ff0000</sld:CssParameter>
                      <sld:CssParameter
name="fill-opacity">0.5</sld:CssParameter>
                    </sld:Fill>
                  </sld:Mark>
                  <sld:Size>12</sld:Size>
*                  <sld:Opacity>0.5</sld:Opacity>*
                </sld:Graphic>

[image: image.png]

I guess that for the fill and stroke within the mark, one could multiply
the internal opacity by the graphic's own opacity?
But right now it's not done, and the graphic opacity is overriding whatever
you set for fill and stroke.


Regards,

Andrea Aime


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On Fri, May 17, 2024 at 2:51 PM VANDENSCHRICK, Grégoire
<gva...@ur...> wrote:

> Hi,
>
> I have a rather simple sld symbology that intends to represent lines by
> circles, much like explained in the cookbook;
>
> here is my sld:
>
> <?xml version="1.0" encoding="UTF-8"?><sld:StyledLayerDescriptor xmlns="
> http://www.opengis.net/sld" xmlns:sld="http://www.opengis.net/sld"
> xmlns:gml="http://www.opengis.net/gml" xmlns:ogc="
> http://www.opengis.net/ogc" version="1.0.0">
>   <NamedLayer>
>     <sld:Name>URBAN_DUP_Public_space_filter_18_bicycle</sld:Name>
>     <UserStyle>
>       <sld:Name>URBAN_DUP_Public_space_filter_18_bicycle</sld:Name>
>       <sld:FeatureTypeStyle>
>         <sld:Rule>
>           <sld:Title>Bicycle PLUS
>             <Localized lang="fr">V&#233;lo PLUS</Localized>
>             <Localized lang="nl">Fiets PLUS</Localized>
>             <Localized lang="en">Bicycle PLUS</Localized>
>           </sld:Title>
>           <ogc:Filter xmlns:ogc="http://www.opengis.net/ogc">
>             <ogc:PropertyIsEqualTo>
>               <ogc:PropertyName>VELO</ogc:PropertyName>
>               <ogc:Literal>1</ogc:Literal>
>             </ogc:PropertyIsEqualTo>
>           </ogc:Filter>
>           <sld:LineSymbolizer uom="
> http://www.opengeospatial.org/se/units/metre">
>             <sld:Stroke>
>               <sld:GraphicStroke>
>                 <sld:Graphic>
>                   <sld:Mark>
>                     <sld:WellKnownName>circle</sld:WellKnownName>
>                     <sld:Fill>
>                       <sld:CssParameter
> name="fill">#ff0000</sld:CssParameter>
>                       <sld:CssParameter
> name="fill-opacity">0.5</sld:CssParameter>
>                     </sld:Fill>
>                   </sld:Mark>
>                   <sld:Size>40</sld:Size>
>                 </sld:Graphic>
>               </sld:GraphicStroke>
>               <CssParameter name="stroke-dasharray">40 40</CssParameter>
>             </sld:Stroke>
>           </sld:LineSymbolizer>
>         </sld:Rule>
>       </sld:FeatureTypeStyle>
>     </UserStyle>
>   </NamedLayer>
> </sld:StyledLayerDescriptor>
>
> I'm under Geoserver 2.24.2, and everything works except the fill-opacity.
> Is there a known bug there, or do I do something wrong? I did try to put a
> stroke-opacity just after the stroke-dasharray CssParameter, but it's not
> working either...
>
> Thank you already for your ideas/help,
>
> Greg for BruGIS
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