Re: [udig-devel] DrawFeatureCommand

[Jesse Eichar <jeichar.w@xxxxxxxxx>]

Hi Ugo...  I've been trying to think what may be the problem and can't  
think of anything obvious.

I am trying to remember if there are any tricky things with the  
DrawCommands and don't really.  It is possible that the command has  
bugs.  Maybe look into it and let me know if you find anything.

Jesse


On 26-Aug-08, at 9:02 AM, Ugo Taddei wrote:

> Hello,
>
> I'm implementing a hovering tool. I basically let the mouse hover  
> over a
> feature and want to draw it, much like the selection tool (it's called
> SelectionBoxCommand, right?).
>
> Well, the code works all right, but for the way the feature is drawn.
> Apparently it gets draw either under the found feature or it gets  
> drawn
> only to be erased by a subsequent update on the found feature (or
> rather, on its bbox). As a result I see only an edge of the feature
> (drawn with the symbolizers I provided).
>
> Here's what I do:
>
> public void mouseHovered(MapMouseEvent e) {
>
>        Feature f;
>        try {
>            f = findFeature(e);
>        } catch (Exception ex) {
>            // TODO Auto-generated catch block
>            ex.printStackTrace();
>            return;
>        }
>        if (f == null) {
>            this.command.setValid(false);
>            this.context.getViewportPane().repaint();
>            return;
>        }
>
>        this.command = new DrawFeatureCommand(f);
>        // this.command.setColor(Color.RED);
>
>        this.context.getViewportPane().addDrawCommand(this.command);
>
>        Symbolizer[] symbs = new Symbolizer[] { new
> StyleBuilder().createPolygonSymbolizer(Color.RED, Color.BLUE, 10) };
>        this.command.setSymbolizers(symbs);
>
>        this.command.setValid(true);
>        this.context.sendASyncCommand(this.command);
>        this.context.getViewportPane().repaint();
>
>    }
>
> //skip dispose code...
>
> findFeature() is adapted code from examples.PickTool.java
>
> Am I doing something wrong?
>
> I can post the whole class and/or a screenshot, but I don't know if  
> that
> will get through the list.
>
> Cheers,
>
> Ugo
>
> --
> Ugo Taddei
>
> Fraunhofer Institut Intelligente Analyse- und Informationssysteme  
> (FhG IAIS)
> http://www.iais.fraunhofer.de
> Department Knowledge Discovery - IAIS.KD -
> Working Group Spatial Decision Support
> http://www.iais.fraunhofer.de/kd.html
> phone  (+49)2241-14-2184    fax    (+49)2241-14-2072
> Schloss Birlinghoven, D-53754 Sankt Augustin, Germany
> _______________________________________________
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> http://udig.refractions.net
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