Hi Thomas,
I don't think the SWT module in GeoTools is maintained (cc'ing Andrea
Antonello for
confirmation). Wondering if you are interested in the module enough to
contribute
fixes and improvements to it?
Cheers
Andrea
On Thu, Feb 11, 2016 at 11:41 PM, Thomas Wunder <[email protected]>
wrote:
> Hello Ian,
> Thanks a million for your reply. When I tried your Cartouche example the
> first thing I noticed was that I forgot to mention that my application is
> SWT based whereas Cartouche is based on swing.
>
> I had to change some minor things to make it work in my setup however in
> the swing based map view getWorldToScreen() and getScreenArea() both are
> working. However the (Feature) map (and the DirectLayer) are shown only for
> a split second upon e.g. reszing the map view (or panning etc.) and turn
> completely white afterwards (as well as before that).
>
> To see what's happening with SwtMapFrame instead I changed the code a bit
> (see attachment, and please excuse me for hardwiring the filename). These
> are my observations so far:
> - Map is drawn perfectly and stays that way when panning resizing, zooming
> etc.
> - A NullPointerException is being thrown in line 68 (println of the
> getWorldToScreen() )
> java.lang.NullPointerException
> at
> org.geotools.referencing.operation.matrix.XAffineTransform.getScaleX0(XAffineTransform.java:569)
> at
> org.geotools.referencing.operation.matrix.XAffineTransform.getScale(XAffineTransform.java:596)
> at
> org.geotools.renderer.lite.RendererUtilities.calculateOGCScaleAffine(RendererUtilities.java:507)
> at org.geotools.JSurvey.SwtCartouche.draw(SwtCartouche.java:132)
> at
> org.geotools.renderer.lite.StreamingRenderer$RenderDirectLayerRequest.execute(StreamingRenderer.java:3450)
> at
> org.geotools.renderer.lite.StreamingRenderer$PainterThread.run(StreamingRenderer.java:3504)
> at
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
> at java.util.concurrent.FutureTask.run(FutureTask.java:266)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> at java.lang.Thread.run(Thread.java:745)
> - DirectLayer (Cartouche) is never being drawn (correctly)
> - When commenting out line 68 (println...):
> -- getScreenArea() returns a (0,0,0,0) rectangle as in my original
> application
> -- Cartouche is not visible, presumably due to incorrect size values from
> getScreenArea()
>
> Does my SWT version of Cartouche work for you?
>
> Thanks again!
> Thomas
>
> On Thursday 11 February 2016 14:47:22 you wrote:
> > Here is an example of my Cartouche (
> > https://en.wikipedia.org/wiki/Cartouche_(cartography)) layer -
> > https://gitlab.com/snippets/14766 in case that helps
> >
> > Ian
> >
> > On 11 February 2016 at 14:43, Ian Turton <[email protected]> wrote:
> > > It sounds like you have a problem somewhere, I regularly use Rectangle
> > > size = viewport.getScreenArea(); in my directlayers and it is fine. Can
> > > you
> > > post some code and I can see if I can spot the problem for you,
> > >
> > > Ian
> > >
> > > On 11 February 2016 at 14:17, Thomas Wunder <[email protected]>
> > >
> > > wrote:
> > >> Hello,
> > >> I'm trying to extend the DirectLayer class but when I'm trying to use
> > >> getWorldToScreen() on the viewport argument inside the draw(...)
> method
> > >> it's
> > >> always returning null. Is this the intended behaviour of that method
> in
> > >> GeoTools 14? If so, how am I supposed to get the worldToScreen
> transform
> > >> otherwise?
> > >>
> > >> By the way viewport.getScreenArea() always returns a (0,0,0,0)
> rectangle,
> > >> whereas viewport.getBounds() seems to work properly. The getBounds()
> of
> > >> my
> > >> DirectLayer subclass I have implemented in a way that it returns
> sensible
> > >> values and a valid CRS.
> > >>
> > >>
> > >> I would really appreciate some hints on what could be going wrong here
> > >> and how
> > >> to get things working properly.
> > >>
> > >> Thanks in advance and best regards!
> > >>
> > >> Thomas
> > >>
> > >>
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> > > --
>
> > > Ian Turton
> --
>
>
>
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