Thanks for the effort,
Currently I use a simillar method creating the png and sending it to the
browser. This was never a problem.
My problem is the generation of the html image-map. I was able to create it
with the old 0.8 version, but with this 2.x version I can't access the
transformed data after drawing with the LiteRenderer. Any ideas or
experiences?
Regards,
Peter Lobacz
[EMAIL PROTECTED] schrieb am 31.07.2006 17:39:45:
> Hi Peter,
>
> I hope the following code will help. If you think I can help with
somethin
> let me know.
>
> ServletOutputStream ouputStream = response.getOutputStream();
>
> img = the buffered image
>
>
> // generate byte[] array
> ByteArrayOutputStream baos = new ByteArrayOutputStream( 1000 );
> javax.imageio.ImageIO.write( img, "png", baos );
> baos.flush();
> byte[] resultImageAsRawBytes = baos.toByteArray();
> baos.close();
> ouputStream.write(resultImageAsRawBytes);
> ouputStream.flush();
>
>
> ......
>
>
> MapContext mc = mapContext;
> BufferedImage bufferedImage = null;
>
> bufferedImage = new BufferedImage(width, height,
> BufferedImage.TYPE_INT_RGB);
> graphics2D = (Graphics2D)bufferedImage.getGraphics();
> graphics2D.setRenderingHints(new
> RenderingHints(RenderingHints.KEY_RENDERING,
> RenderingHints.VALUE_RENDER_SPEED));
> graphics2D.setColor(Color.WHITE);
> graphics2D.fillRect(0, 0, width, height);
>
> streamingRenderer = new StreamingRenderer();
> streamingRenderer.setContext(mc);
>
> RenderingHints hints = new
> RenderingHints(RenderingHints.KEY_ANTIALIASING,
> RenderingHints.VALUE_ANTIALIAS_ON );
> streamingRenderer.setJava2DHints(hints);
>
> //we already do everything that the optimized data loading
does...
> //if we set it to true then it does it all twice...
> Map rendererParams = new HashMap();
> rendererParams.put("optimizedDataLoadingEnabled",new
Boolean(true)
> );
>
> streamingRenderer.setRendererHints(rendererParams);
>
> try
> {
> streamingRenderer.paint(graphics2D, new
Rectangle(width,
> height), envelope);
> }
> catch(Exception ex)
> {
> ex.printStackTrace();
> }
>
> if (graphics2D!=null)
> graphics2D.dispose();
>
> return bufferedImage;
>
>
> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED] On Behalf Of
> [EMAIL PROTECTED]
> Sent: Monday, July 31, 2006 2:15 AM
> To: [email protected]
> Subject: [Geotools-gt2-users] Antwort: Re: Web-based mapping with
GeoTools?
>
> Yes I've done this already but I have problems generating the html -
> imagemaps. Any hints in this direction?
>
>
> Regards,
> Peter
>
>
> [EMAIL PROTECTED] schrieb am 28.07.2006
> 18:04:38:
>
> > client requests.
> >
> >
> > On 7/28/06, Bernd Resch <[EMAIL PROTECTED]> wrote:
> > > Hello,
> > >
> > > I've got a very basic question: as I understood, GeoTools aims at
> > > displaying maps etc. in client-side components such as Applets
> > > (using the JFrame class). Using GeoTools, is it also possible to
> > > build web-based applications (maps are displayed directly within an
> > > HTML page e.g. using JSP)?
> > > If yes, are the same classes like (Styled)MapPane etc. used?
> >
> > mostly you just use a renderer to draw directly to an image that the
> > servlet sends to the client.
> >
> > > If no, are there any open-source Java implementations available?
> >
> > check out geoserver and mapbuilder.
> >
> > Ian
> >
> > _______________________________________________
> > Geotools-gt2-users mailing list
> > [email protected]
> > https://lists.sourceforge.net/lists/listinfo/geotools-gt2-users
>
>
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