How about allowing a Displacement for Halos (relative to the label)?

--
David Winslow
OpenGeo - http://opengeo.org/

On Sun, 08 Aug 2010 21:28:49 +0200, Andrea Aime <aa...@opengeo.org> wrote:
> Hi,
> one common way to make labels stand out, other than halos (which are
> often quite cheesy) is to trop a shadow, which looks especially good
> if it's really small.
> 
> See the TypeBrewer online utility for an example (the major labels
> have a tiny white shadow that they call highlight).
> 
> I would like to add that effect to our renderer. Rendering wise
> it's trivial, what is not trivial is adding it to the API....
> 
> In theory I'd like to add the ability to parse the following:
> 
>    <xsd:element name="Shadow">
>      <xsd:annotation>
>        <xsd:documentation>
>          A "Shadows" draws the same label with an offset and a different 
> color
>        </xsd:documentation>
>      </xsd:annotation>
>      <xsd:complexType>
>        <xsd:sequence>
>          <xsd:element ref="sld:Displacement" minOccurs="0"/>
>          <xsd:element ref="sld:Fill" minOccurs="0"/>
>        </xsd:sequence>
>      </xsd:complexType>
>    </xsd:element>
> 
> A shadow has a fill color, displacementX, displacementY.
> Easy, end of story...
> 
> However, that also means adding a new interface, a new
> implementating, and changing the style visitor interface
> and all implementations. Sounds material for a proposal...
> Bleck!!!
> 
> I don't see much of an alternative though... any bright idea?
> 
> Cheers
> Andrea

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