[mapserver-users] vector Symbol and anchorpoint

[Andrea Peri]

Hi,

Sorry, I forgot to explain my need.

I need to define an outline of polygon with an perpendicular segment
forward the internal of polygon.
It goal is to allow to use only the outline (no internal fill) and also
help the user to distinguish the internal and the external part of a
polygon when the scale is bigger and the polygon is not all in the screen.

The problem is that the symbol don't start exactly from the outpline but a
little before.as it was moved.

Andrea.




2013/8/11 thomas bonfort <thomas.bonfort at gmail.com>

> As you're not showing what you would like to obtain, nor the mapfile
> you are using to generate those images it is difficult to be of much
> help. I have added a test in
>
> https://github.com/mapserver/msautotest/commit/89d59a49586dc3192dfd2f67bd1a751f0900e36f
> that mimics what I guess you would like to obtain, and for me shows
> that anchorpoint seems to be working as expected.
>
> --
> thomas
>
> On 11 August 2013 13:07, Andrea Peri <aperi2007 at gmail.com> wrote:
> > Hi,
> > thx for response.
> >
> > I try to set this symbol:
> >
> >
> >   SYMBOL
> >     NAME "test"
> >     TYPE vector
> >     FILLED TRUE
> >     POINTS
> >        0.0 0.0
> >        1.0 0.0
> >        0.5 0.0
> >        0.5 0.5
> >
> >     END
> >     ANCHORPOINT 0.0 0.0
> >   END
> >
> > But mapserver seem move the line by 0.5.
> >
> > I show in the attached image (img1) the problem.
> > The filled green is the real polygon.
> > Instead the red is the symbol I try to define with "test".
> > As you can see the red line is not in the exact outline but 0.5 moved.
> >
> > I notice also that if I define this other kind of symbol:
> >
> >   SYMBOL
> >     NAME "chiodo"
> >
> >     TYPE vector
> >     FILLED TRUE
> >     POINTS
> >        0.0 0.0
> >        1.0 0.0
> >        0.5 0.0
> > #       0.5 0.5
> >
> >     END
> >     ANCHORPOINT 0.0 0.0
> >   END
> >
> > Where I  comment the perpendicul segment,
> > the result is a red line exactly on the outline.
> > I show this in the img2 attacched.
> >
> > So mapserver seem move the symbol when there is a perpendicular segment.
> >
> > Is this a bug or I don't understand how work the symbols ?
> >
> > Thx,
> >
> > Andrea.
> >
> >
> >
> > 2013/8/11 thomas bonfort <thomas.bonfort at gmail.com>
> >>
> >> try defining the points of your vector symbol such that min(x)=min(y)=0
> >>
> >> On 11 August 2013 10:30, Andrea Peri <aperi2007 at gmail.com> wrote:
> >> > Hi,
> >> >
> >> > I'm having trouble try.ing use the anchorpoint with a vector symbol.
> >> >
> >> > Is this working with vectors ?
> >> >
> >> > This is what I'm try to do:
> >> >
> >> >   SYMBOL
> >> >     NAME "test"
> >> >     TYPE vector
> >> >     FILLED TRUE
> >> >     POINTS
> >> >        0.5 1.0
> >> >        0.5 0.75
> >> >        0.0 0.75
> >> >        1.0 0.75
> >> >     END
> >> >     ANCHORPOINT 0.0 0.0
> >> >   END
> >> >
> >> > The anchorpoint seem always set to the 0.5 0.5 position.
> >> >
> >> > I'm use the trunk version of mapserver.
> >> >
> >> >
> >> >
> >> > --
> >> > -----------------
> >> > Andrea Peri
> >> > . . . . . . . . .
> >> > qwerty àèìòù
> >> > -----------------
> >> >
> >> > _______________________________________________
> >> > mapserver-users mailing list
> >> > mapserver-users at lists.osgeo.org
> >> > http://lists.osgeo.org/mailman/listinfo/mapserver-users
> >> >
> >
> >
> >
> >
> > --
> > -----------------
> > Andrea Peri
> > . . . . . . . . .
> > qwerty àèìòù
> > -----------------
>



-- 
-----------------
Andrea Peri
. . . . . . . . .
qwerty àèìòù
-----------------
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