Hi Stu:
On Fri, 17 Aug 2001, Stu Wier wrote:
> Tom,
>
> > I might be naive, but I'd use a CellImpl to listen for changes in your
> > sliceFF (or the user interface), and then inside its doAction()
> > method, I'd get the data from sliceFF and make slide2D, as you described
> > ...including a setData into the DataReference you're using for
> > the 2D display. Does that make sense?
> Thanks for the help. I have not used Cell or doAction at all, so
> I will learn about it and look into it and tell you how it works.
>
Take a look at Test00.java.
Also, here's a small example I put together for ABoM training:
// import needed classes
import visad.*;
import visad.java2d.DisplayImplJ2D;
import visad.java2d.DirectManipulationRendererJ2D;
import java.rmi.RemoteException;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class Dot {
// type 'java Dot' to run this application
public static void main(String args[])
throws VisADException, RemoteException {
final RealType x = new RealType("x");
final RealType y = new RealType("y");
Real[] coord = new Real[] {new Real(x,.7), new Real(y,-.3)};
RealTuple coord_tuple = new RealTuple(coord);
DisplayImpl disp = new DisplayImplJ2D("display");
ScalarMap sx = new ScalarMap(x, Display.XAxis);
sx.setRange(-1.0, 1.0);
disp.addMap(sx);
ScalarMap sy = new ScalarMap(y, Display.YAxis);
sy.setRange(-1.0, 1.0);
disp.addMap(sy);
DataReferenceImpl ref_coord_tuple = new DataReferenceImpl("ref_c_t");
ref_coord_tuple.setData(coord_tuple);
GraphicsModeControl gmc = disp.getGraphicsModeControl();
gmc.setPointSize(5.f);
gmc.setPointMode(true);
// for simple dipslay, use
//disp.addReference(ref_coord_tuple);
// ...or...for interactive display, use
disp.addReferences(new DirectManipulationRendererJ2D(), ref_coord_tuple);
// to list out the values at the cursor
final DisplayRenderer dr = disp.getDisplayRenderer();
CellImpl cell = new CellImpl() {
public void doAction() throws VisADException {
double xcoord = dr.getDirectAxisValue(x);
double ycoord = dr.getDirectAxisValue(y);
System.out.println("x,y ="+xcoord+" "+ycoord);
}
};
cell.addReference(ref_coord_tuple);
// end of list out values addition...
JFrame frame = new JFrame("Dot Application");
frame.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {System.exit(0);}
});
// create JPanel in JFrame
JPanel panel = new JPanel();
frame.getContentPane().add(disp.getComponent());
// set size of JFrame and make it visible
frame.setSize(300, 300);
frame.setVisible(true);
}
}
And a similar example in the Jython tutorial:
http://www.ssec.wisc.edu/~tomw/visadtutor/t7example.html
(actually this will give you the flavor even if you're using that
"other" J language...)
Have a good weekend!
tom
--
Tom Whittaker (tomw@xxxxxxxxxxxxx)
University of Wisconsin-Madison
Space Science and Engineering Center
Phone/Voicemail: 608/262-2759
Fax: 608/263-6738
