a bit easier way to do it is to use mapserver substitution to recover
the map angle and calculate the final angle value directly in the
postgres data string :
DATA "geom FROM (SELECT ..., (%map_angle%::float+angle)*-1 AS angle
FROM table
WHERE condition)
as foo USING UNIQUE id USING srid=21781"
...
METADATA
...
"default_map_angle" "0"
"map_angle_validation_pattern" "[0-9.\-]*" # for map angle
END
CLASS
STYLE
SYMBOL 'bla.png'
SIZE 120.0
ANGLE [angle]
OFFSET 0 60.00
END
END
maybe there is an even easier way to do it?
dear all
I need to make a symbol rotate with the map, i.e. if my symbol has an
angle of 45° and the map is rotated by, let say, 10°, the symbol angle
should be 55° to keep it's orientation relative to the map itself.
at the moment the only way I see is to dynamically set in my database
the angle values to be used for the symbol calculated from the angle
of the map selected by the user (which is totally dynamic, not a
configured value), and that's horrendously annoying as I would have to
dynamically set the data value for the given layer so it use the
dynamically generated angles values.
is there any other way to make a symbol angle follow the map rotation ?
thanks for reading
best regards
Oliver
--
Camptocamp SA
Oliver Christen
PSE A, EPFL
CH-1015 Lausanne
www.camptocamp.com
+41 21 619 10 23 (direct)
+41 21 619 10 10 (centrale)
+41 21 619 10 00 (fax)
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