Hi Tom,
you are right, it is a problem of Type.
I went a bit into the code and noticed that the method
setIsDirectManipulation(boolean) of the DataRenderer is set to false
(and throws the error I reported in the original post), if
the type of the data is not of one of the following types:
FunctionType, RealTupleType, RealType
which the Gridded2DSet is not.
I will have a closer look to the CurveManipulationRenderer class. I
already gave it a very quick look for it is a nice example of drawing.
Hopefully you are right, I could have a chance to modify it for my needs.
Thanks man,
Andrea
* [A.D. 27/11/06 10:10], Tom Rink <rink@xxxxxxxxxxxxx> probably wrote:
> Hi Andrea,
>
> The default DirectManipulationRenderer makes certain
> assumptions about the structure of the linked data in
> order to generate new data values as a result of user
> gestures. A polygon is too ambiguous for the default
> logic and probably a "notSimpleField" or "notRealFunction"
> exception is being thrown. You could try using the
> CurveManipulationRenderer class in the visad.bom
> package. I believe the folks at Unidata have done some
> work with this in the IDV.
>
> Tom
>
> Andrea Antonello wrote:
>
> >I am trying to create a toolbox that is able to modify shapefiles.
> >My first approach is the existing DirectManipulationRendererJ3D, but as
> >I try it with the code below, it gives me:
> >
> >null: DirectManipulationRendererJ3D.doTransform in the lower left corner
> >of the display.
> >
> >_________________________________________________________
> > Coordinate[] tmpCoord = coords.elementAt(i);
> > int np = tmpCoord.length;
> > float[][] samples = new float[2][np];
> > for (int j = 0; j < np; j++) {
> > samples[0][j] = (float) tmpCoord[j].x;
> > samples[1][j] = (float) tmpCoord[j].y;
> > }
> >
> > // the lines
> > Gridded2DSet tmpLines = new Gridded2DSet(earth, samples,
> > samples[0].length);
> > // create a DataReference for river system
> > DataReference rivers_ref = new DataReferenceImpl("rivers");
> > rivers_ref.setData(tmpLines);
> >
> > ConstantMap[] colorMapLines = { new ConstantMap(1, Display.Red),
> > new ConstantMap(0, Display.Green),
> > new ConstantMap(0, Display.Blue),
> > new ConstantMap(3f, Display.LineWidth) };
> > display1.addReferences(new DirectManipulationRendererJ3D(),
> > rivers_ref, colorMapLines);
> >_________________________________________________________
> >
> >What am I doing wrong?
> >
> >Regards,
> >Andrea
> >
> >
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> >
> >
> >
>
--
____________________________________________________________________________
HydroloGIS - Environmental Safety Modelling
Siemens Str. 19 via Siemens
I-39100 Bozen - Bolzano
www.hydrologis.com
Andrea Antonello
Environmental Engineer
tel. +39 0471 068065
mobile: +39 328 8497722
fax: +39 36 328 8497722
email: andrea.antonello@xxxxxxxxxxxxxx
"Let it be as much a great honour to take as to give learning,
if you want to be called wise."
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