Hi Cécile,
this does not look like expected behavior to me... the fill is really just
a repetition of a
static image that is being built based on the mark, using a 3x3 template to
account
for eventual symbol self-overlap (due to antialisasing).

I guess the code is not working well for the triangle case. I cannot help
further, but C2C
has plenty of Java developers, if you are one or can contact one, here is
the area of code
where I'd start looking:
https://github.com/geotools/geotools/blob/0613fa6cc9f132c3354f68011365a84dcfc5f707/modules/library/render/src/main/java/org/geotools/renderer/style/SLDStyleFactory.java#L1164

Cheers
Andrea


On Thu, Mar 9, 2023 at 12:42 PM Cécile Vuilleumier <
cecile.vuilleum...@camptocamp.com> wrote:

> Hello all,
> Question regarding styling: we have polygon layers with marker fills. When
> using a margin (to add space between markers) it seems the marker is cut
> apart, with the bottom of the marker appearing at the top. I am attaching
> an example to hopefully make this clearer (image and SLD file), with one
> rule without margin (on the left, marker appears correctly) and the other
> with a margin of 5 (on the right, marker appears to be broken). Is this
> expected behavior?
> Thanks in advance,
> Cécile
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-- 

Regards,

Andrea Aime

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