[mapserver-users] Vector symbol drawing problem

[Jez Walters]

David,


Thanks for the advice, but I've decided to draw a thin rectangle until this fault is fixed in MapServer - although the rectangle has to be at least 0.05 pixels high to be rendered.

SYMBOL
  NAME "HorizontalLine"  # Actually a thin rectangle!
  TYPE vector
  POINTS
     -0.5 0
     -0.5 0.05  # Required to force drawing!
     0.5 0.05   # Required to force drawing!
     0.5 0
     -0.5 0     # Required to force drawing!
  END
END


Regards,


Jez


-----Original Message-----
From: mapserver-users-bounces at lists.osgeo.org [mailto:mapserver-users-bounces at lists.osgeo.org] On Behalf Of Fawcett, David (MPCA)
Sent: Tuesday 10 August 2010 16:50
To: Jez Walters
Cc: 'mapserver-users at lists.osgeo.org'
Subject: RE: [mapserver-users] Vector symbol drawing problem

Is there a TrueType symbol that you could use in place of the simple vector symbol?  You could even potentially create your own if you can't find an existing one.

David.

-----Original Message-----
From: mapserver-users-bounces at lists.osgeo.org [mailto:mapserver-users-bounces at lists.osgeo.org] On Behalf Of Jez Walters
Sent: Tuesday, August 10, 2010 4:25 AM
To: Fawcett, David (MPCA)
Cc: 'mapserver-users at lists.osgeo.org'
Subject: RE: [mapserver-users] Vector symbol drawing problem

David,


As you may have noticed, I've just submitted a bug for this - ticket #3511.  In the meantime, I'm drawing thin horizontal rectangles instead, although these don't get rendered either if they're less than 0.05 units (pixels?) high!  :-(


Jez


-----Original Message-----
From: Fawcett, David (MPCA) [mailto:David.Fawcett at state.mn.us] 
Sent: Monday 9 August 2010 18:59
To: Jez Walters
Subject: RE: [mapserver-users] Vector symbol drawing problem

Thomas is the guy who knows what he is talking about, he wrote much of the agg rendering code.  

I hadn't had enough coffee this morning to give you a reasonable answer...

David.
 

-----Original Message-----
From: Jez Walters [mailto:Jez.Walters at ipl.com] 
Sent: Monday, August 09, 2010 11:31 AM
To: Fawcett, David (MPCA)
Cc: 'mapserver-users at lists.osgeo.org'
Subject: RE: [mapserver-users] Vector symbol drawing problem

Hi David,


Just in case it makes any difference, I'm attempting to draw the UK Ordnance Survey MasterMap Topography Layer.  Here's a sample map file that demonstrates the problem - although for some reason the VerticalLine symbol now gets drawn horizontally!

MAP
  NAME "IPMap"
  EXTENT 529445 179961 529555 180038  # The Mall, London
  SIZE 1200 1200
  UNITS meters
  IMAGETYPE PNG24
  IMAGECOLOR 190 255 255
  FONTSET "Fonts.lst"
  SHAPEPATH "."
  PROJECTION
    "init=epsg:27700"  # OSGB39
  END

  SYMBOL
    NAME "HorizontalLine"
    TYPE vector
    POINTS
       0 0
       1 0
    END
  END

  SYMBOL
    NAME "VerticalLine"
    TYPE vector
    POINTS
       0 0
       0 1
    END
  END

  LAYER
    NAME "TopographicPoint"
    STATUS off
    TYPE point
    UNITS meters
    MINSCALEDENOM 0
    MAXSCALEDENOM 3125
    TRANSPARENCY alpha
    TILEINDEX "OSMasterMap/TopographyLayer/TopographicPoint"

    CLASS
      STYLE
        SYMBOL "HorizontalLine"
        COLOR 0 0 0
        WIDTH 10
      END
    END
  END
END


Regards,


Jez


-----Original Message-----
From: Fawcett, David (MPCA) [mailto:David.Fawcett at state.mn.us] 
Sent: Monday 9 August 2010 17:03
To: Jez Walters; mapserver-users at lists.osgeo.org
Subject: RE: [mapserver-users] Vector symbol drawing problem

What does the rest of the map file look like?  What is your map extent?

David.

-----Original Message-----
From: mapserver-users-bounces at lists.osgeo.org [mailto:mapserver-users-bounces at lists.osgeo.org] On Behalf Of Jez Walters
Sent: Monday, August 09, 2010 11:00 AM
To: mapserver-users at lists.osgeo.org
Subject: [mapserver-users] Vector symbol drawing problem


Hello fellow MapServer users!

I'm trying to draw a really simple vector SYMBOL using MapServer - it's just
a straight line!  I expected this to be easy, but I can only get MapServer
to render vertical lines!  The following SYMBOL definition correctly draws a
vertical line:

  SYMBOL
    NAME "VerticalLine"
    TYPE VECTOR
    POINTS
       0 0
       0 1
    END
  END

However, when I change this to draw a horizontal line nothing is output:

  SYMBOL
    NAME "HorizontalLine"
    TYPE VECTOR
    POINTS
       0 0
       1 0
    END
  END

Is this a bug or am I doing something wrong?

Jez
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