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Re: [udig-devel] Draw RenderedImage
RenderUpdate and renderDone both have the side effect of causing the default mapdisplay to update. So when rendering is actively taking place, renderUpdate is called to notify the map display to update. When render done is called to update the mapdisplay when no rendering is required. For example a layer's visibility is changed. I'm not surprised that renderUpdate is called 3 times but I'm not so sure why renderDone is called twice. I'd have to check that. Could be a bug. 

Jesse

Iñigo Telleria Elola wrote:


Thank you very much for your plugin!!!!
But finally I'm going to use AWT, because I need to use the Java3D api and I think Java3D can't work on SWT. Even so, thanks for your plugin, surely I will need next time.
Now I have obtained the frame shows the map which is opened in uDig. The plugin updates automatically if I add a layer, or I make zoom, ... To achieve this I have used: 

 - ContextModelListenerAdapter: it notifies me if a layer is removed
- RenderListenerAdapter: it notifies if the user has zoomed, or move the map, ... 

I don't know if these are the most suitable classes, but it works!!
I have a question: If I debug the plugin, I don't understand why RenderListenerAdapter.renderUpdate is called 3 times and RenderListenerAdapter.renderDone 2 times when I have made only one operation, for example Zoom-In. Maybe I haven't explain correctly, but I don't know how to explain. 



    ------------------------------------------------------------------------
    From:  /Jesse Eichar <jeichar@xxxxxxxxxxxxxxx>/
    Reply-To:  /User-friendly Desktop Internet GIS
    <udig-devel@xxxxxxxxxxxxxxxxxxxxx>/
    To:  /User-friendly Desktop Internet GIS
    <udig-devel@xxxxxxxxxxxxxxxxxxxxx>/
    Subject:  /Re: [udig-devel] Draw RenderedImage/
    Date:  /Mon, 09 Jan 2006 11:06:44 -0800/
    >Hi,
    >
    >I've attached a plugin that opens a dialog showing the currently
    >active map.  I hope this helps you.
    >
    >Jesse
    >
    >Iñigo Telleria Elola wrote:
    >
    >>I want to draw an RenderedImage (obtained from udig's map) in a SWT
    >>shell. I have tried differents possibilties:
    >>  1) with GC, but this object doesn't have any method to draw
    >>RenderedImage (only Image).
    >>2) with SWTGraphics, It doesn't work.
    >>3) with Graphics2D, I don't know how to use.
    >>  anybody has an idea how I can achieve?
    >>  Thanks in advance
    >>
    >>------------------------------------------------------------------------
    >>
    >>_______________________________________________
    >>User-friendly Desktop Internet GIS (uDig)
    >>http://udig.refractions.net
    >>http://lists.refractions.net/mailman/listinfo/udig-devel
    >>
    >>
    >

    ><< swtDialog.zip >>

    >_______________________________________________
    >User-friendly Desktop Internet GIS (uDig)
    >http://udig.refractions.net
    >http://lists.refractions.net/mailman/listinfo/udig-devel

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_______________________________________________
User-friendly Desktop Internet GIS (uDig)
http://udig.refractions.net
http://lists.refractions.net/mailman/listinfo/udig-devel

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