[Geotools-gt2-users] Saving images and StreamingRenderer issues

[andyuk <an...@gm...>]

Hi,

My code for saving a map image to disk is working, but not for very large
maps/images. The map is drawn correctly on screen, but the file output is
blank or only a few features are drawn.

The JMapPane (jmp) class being used is taken from the geotools demo. I am
using the StreamingRenderer class. I suspect that not all features are in
memory so they are not all written to the image. I have put this function i=
n
the same thread (appGUI) as the JMapPane class so it should be thread safe.
The ShapefileRenderer didn't work since it complained about my Mercator
projection.

07-Sep-2007 14:14:24 org.geotools.renderer.shape.ShapefileRenderer
computeScale
WARNING: Longitude 180=C2=B001.1'W is out of range (=C2=B1180=C2=B0).
org.geotools.referencing.operation.projection.PointOutsideEnvelopeException=
:
Longitude 180=C2=B001.1'W is out of range (=C2=B1180=C2=B0).

What can I try next?

    public void saveImage(String filePath){

        logger.debug("Start: saveImage(" + filePath + ")");

        final int w =3D jmp.getWidth();
        final int h =3D jmp.getHeight();
        logger.debug("w:" + w + " h:"+ h);
       =20
        BufferedImage bufferedImage  =3D new
BufferedImage(jmp.getBounds().width, jmp.getBounds().height,
BufferedImage.BITMASK);
          =20
        Graphics2D g2 =3D bufferedImage.createGraphics();
        g2.setComposite(AlphaComposite.Src);  // set transparency
        g2.fillRect(0, 0, bufferedImage.getWidth(),
bufferedImage.getHeight());
             =20
        jmp.paint(g2);
       =20
        try {
            ImageIO.write(bufferedImage, "png", new File(filePath));
        } catch (Exception e) {
            e.printStackTrace();
        }        =20
        g2.dispose();
       =20
        logger.debug("End: saveImage(" + filePath + ")");
    }
=09
--
Andy
--=20
View this message in context: http://www.nabble.com/Saving-images-and-Strea=
mingRenderer-issues-tf4401289.html#a12555148
Sent from the geotools-gt2-users mailing list archive at Nabble.com.