Mailing lists are here:
- http://geotools.org/getinvolved.html
As for buffered image you don't have much choice; that is how we render over to
SWT (since geotools supports a java Graphics2d class for rendering ). We use
the same technique to render into a texture map for those wanting draw out into
OpenGL.
There are a number of Graphics2d implementations that are backed by SWT; I have
not tried them.
We use a similar technique with the batik project (which has a Graphics2d that
writes out SVG on the back end)
--
Jody Garnett
On Wednesday, 20 June 2012 at 7:32 AM, ChenFred wrote:
> Thank you Jody for your reply.
>
> I am not sure if using BufferedImage is a good idea or not. Because the task
> is not just rendering a static map in the overview. There are some activities
> will happen within the overview, e.g. panning/dragging etc. And the overview
> needs to immediately reflect the changes that happens in the main view. Those
> changes are mainly zooming, panning, etc.
>
> No, I am not currently a contributor to gt-swt. But if you like I could
> contribute this Overview to the library when it is done.
> Sorry, I don't know this mailing list is only for geotool library developers.
> Is there another mailing list for geotools library end users?
>
> Fred
>
> Date: Tue, 19 Jun 2012 17:26:15 +1000
> From: [email protected] (mailto:[email protected])
> To: [email protected] (mailto:[email protected])
> CC: [email protected]
> (mailto:[email protected])
> Subject: Re: [Geotools-devel] How to create an overview using geotools
>
> The documentation includes examples of how to use the gt-render module
> directly; including how to use it to write out a PNG file.
>
> -http://docs.geotools.org/latest/userguide/library/render/gtrenderer.html#image
>
> I have used the geotools rendering engine to draw under SWT before; the best
> technique is to render into a buffered image with the ARGB byte order; and
> then hijack that as the contents of your SWT Image (which you can then draw
> into the correct location).
>
> The existing gt-swt module should have similar code.
>
> Can I ask if you will be contributing this as a patch to gt-swt module? This
> email list is focused on improving the library.
> --
> Jody Garnett
>
>
> On Tuesday, 19 June 2012 at 12:25 PM, ChenFred wrote:
>
> > Hi there,
> >
> > I am new to GEOTOOLS library. i am asked to add an overview to gt-swt
> > package. The overview is very similar to the Google Maps' overview, which
> > is located in the bottom left corner. I am really appreciate if anybody can
> > tell me how I can start this task with. Is there any material/documents
> > describe this topic? It will be great if someone can provide some sample
> > code, or even some pseudo code.
> >
> > thank you
> > FredChen
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> > _______________________________________________
> > GeoTools-Devel mailing list
> > [email protected]
> > (mailto:[email protected])
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> >
> >
>
>
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