RE: [OpenMap Users] Problem with rendering icons

From: Ted <theodore.wong_at_comcast.net>
Date: Tue, 29 Jan 2008 06:30:01 -0500

Hi,

I've followed up on the issues. I don't know if the gif file is
properly defined or the code is broken.

I've traced the problem to:

OMRaster(float lt, float ln, image ii)

lt = 0 //lat
ln = 0 //lon
ii = data/icons/airport.gif // from the openmap.properties file.

Then, an exception is thrown:
OMRasterObject.render: Attempting to draw a image that is not ready: Image
probably wasn't
available.

I believe that this exception is a check based on the dimensions of the
gif/image.

OMRaster appears again in an attempt to render with values:

0.0
0.0
sun.awt.image.ToolkitImage_at_129e5e9

Further in the procressing:
OMRasterObject is called to render the gif in pixel coordinates.

public void render(graphics g)
 g=g.drawimage(bitmap, point1.x, point1.y, this);

public abstract boolean drawimage( image img, int x, int y, imageobserver
observer) ic called.

Then, the message appears:
Then, an exception is thrown:
OMRasterObject.render: Attempting to draw a image that is not ready: Image
probably wasn't
available.

Has anyone seen this problem or know of a solution? If so, I would
appreciate a post.

Thanks,

Ted
  -----Original Message-----
  From: owner-openmap-users_at_bbn.com [mailto:owner-openmap-users_at_bbn.com]On
Behalf Of theodore.wong_at_comcast.net
  Sent: Monday, January 28, 2008 12:39 PM
  To: openmap-users_at_bbn.com
  Subject: [OpenMap Users] Problem with rendering icons


  Hi,

  I'm tying to mysql with gis extensions and having difficult rendering the
gif file - airport -
  that I choose for testing. I've put output statements to trace where it
fails. In MysqlGeometryLayer, the query statement with the polygon of the
rectangle returns the
  correct set of records but it never renders.

  In the openmap.properties file, I've setup:

    mygeo.pointSymbol=data/icons/airport.gif

  The three lines below were left blank, I didn't find examples for the
            color, width and fill. So, I left them blank.
    mygeo.lineColor=&ltColor for lines&gtDefault is red
    mygeo.lineWidth=&ltPixel width of lines&gtDefault is 0
    mygeo.fillColor=&ltColor of fill&gtDefault is red

  Could this be causing the problem?

  Also, I would like to use the
"com.bbn.openmap.tools.symbology.milStd2525".
  It appears that I can insert the symbology file name into mysql db and
over ride
  the default mygeo.pointSymbol=data/icons/airport.gif. Is the the correct
approach?


  Thanks,

  Ted

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Received on Tue Jan 29 2008 - 06:37:47 EST