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Hello,
my purpose is to plot some set of points on a 3D display, and once the=20
scene is rendered, to interactively draw some contours around some=20
interesting area, with the mouse. At the present time, I'm able to get the
coordinate mouse, to display some set of cross shapes, to draw lines=20
between these shapes. But I was not able to make theses shapes moveable=20
with, for example, the use of DirectManipulationRendererJ3D.
* The first solution I tried was to addReference, after the initial scene=20
is rendered. The code looks like:
private void makeVisibleCrossShape (double dx, double dy) throws=20
VisADException, RemoteException {
// a cross is displayed at the current mouse coordinate
RealTuple point=5Fcoord=5Ftuple =3D new RealTuple (xyzshapeType, new=20
double[] {dx, dy, 0, 0});
DataReferenceImpl point=5Fref =3D new DataReferenceImpl ("pointRef" +=20
pointCount);
point=5Fref.setData (point=5Fcoord=5Ftuple);
// interactive behavior added
DirectManipulationRendererJ3D point=5Fhandler =3D new=20
DirectManipulationRendererJ3D ();
dpy.addReferences (point=5Fhandler, point=5Fref, pointColor);
System.out.println ("new cross in (" + dx + ", " + dy + ")");
pointCount++;
}=20
The reason why it doesn't work is probably that I don't have the right to=20
use addReference, once the scene has been displayed. Is it correct ?
* The second solution, I had in mind, was to create a DataReferenceImpl,=20
before the scene is rendered, that contains an array of cross shapes=20
coordinates. By extending this array, I could add some shapes on the=20
display. Something like:
(Gridded1DSet) -> (x, y, z, shape}
But as soon as I add a DirectManipulationRendererJ3D to display this=20
reference, nothing appears (while with a classic Display#addreference=20
call, everything is normally displayed).
Any help on this topic ?
Renaud DA=CFAN
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