I wonder if part of the problem is that Java 3D is not supported by the Java
Virtual Machine that runs under MSIExplorer?
tom
> Gianluca wrote:
>
> Hello VisAD List,
>
> My goad is to visualize a net-CDF file using an applet, and i tryed to
> transform Simple example to an applet. My Kawa compile and run this file
> successfully, but it don't run with IExplorer.
>
> Could everyone help me to solve this problem?
> Thanks,
> Gianluca
>
> ----------------sourcecode-------------------------------------------------------------------------------------------------------------------
> // import needed classes
> import visad.*;
> import visad.java3d.DisplayImplJ3D;
> import visad.util.VisADSlider;
> import visad.data.netcdf.Plain;
> import java.rmi.RemoteException;
> import java.io.IOException;
> import java.awt.*;
> import java.awt.event.*;
> import javax.swing.*;
> import java.applet.*;
>
> public class Simple extends Applet{
>
> // type 'java Simple' to run this application
> public static void main(String args[])
> throws VisADException, RemoteException, IOException {
>
> Simple SimpleIst = new Simple();
>
> // create a DataReference for an image
> final DataReference image_ref = new DataReferenceImpl("image");
>
> // create a netCDF reader
> Plain plain = new Plain();
>
> // open a netCDF file containing an image sequence and adapt
> // it to a Field Data object
> Field imagesNC = null;
> try {
> imagesNC = (Field) plain.open("images.nc");
> }
> catch (IOException exc) {
> String s = "To run this example, the images.nc file must be "
> +"present in\nyour visad/examples directory.";
> System.out.println(s);
> System.exit(0);
> }
> final Field image_sequence = imagesNC;
>
> // create a Display using Java3D
> DisplayImpl display = new DisplayImplJ3D("image display");
>
> // extract the type of image and use
> // it to determine how images are displayed
> FunctionType image_sequence_type
> (FunctionType) image_sequence.getType();
> FunctionType image_type
> (FunctionType) image_sequence_type.getRange();
> RealTupleType domain_type = image_type.getDomain();
> // map image coordinates to display coordinates
> display.addMap(new ScalarMap((RealType) domain_type.getComponent(0),
> Display.XAxis));
> display.addMap(new ScalarMap((RealType) domain_type.getComponent(1),
> Display.YAxis));
> // map image brightness values to RGB (default is grey scale)
> display.addMap(new ScalarMap((RealType) image_type.getRange(),
> Display.RGB));
>
> // link the Display to image_ref
> // display will update whenever image changes
> display.addReference(image_ref);
>
> // create a DataReference and RealType for an 'hour' value
> final DataReference hour_ref = new DataReferenceImpl("hour");
> RealType hour_type
> (RealType) image_sequence_type.getDomain().getComponent(0);
> // and link it to a slider
> VisADSlider slider = new VisADSlider("hour", 0, 3, 0, 1.0,
> hour_ref, hour_type);
>
> // create a Cell to extract an image at 'hour'
> // (this is an anonymous inner class extending CellImpl)
> Cell cell = new CellImpl() {
> public void doAction() throws VisADException, RemoteException {
> // extract image from sequence by evaluating image_sequence
> // Field at 'hour' value
> image_ref.setData(image_sequence.evaluate(
> (Real) hour_ref.getData()));
> }
> };
> // link cell to hour_ref to trigger doAction whenever
> // 'hour' value changes
> cell.addReference(hour_ref);
>
> // create JFrame (i.e., a window) for display and slider
> JFrame frame = new JFrame("Simple VisAD Application");
> frame.addWindowListener(new WindowAdapter() {
> public void windowClosing(WindowEvent e) {System.exit(0);}
> });
>
> // create JPanel in JFrame
> JPanel panel = new JPanel();
> panel.setLayout(new BoxLayout(panel, BoxLayout.Y_AXIS));
> panel.setAlignmentY(JPanel.TOP_ALIGNMENT);
> panel.setAlignmentX(JPanel.LEFT_ALIGNMENT);
> frame.getContentPane().add(panel);
>
> // add slider and display to JPanel
> panel.add(slider);
> panel.add(display.getComponent());
>
> // set size of JFrame and make it visible
> frame.setSize(500, 600);
> frame.setVisible(true);
> }
> }
--
Tom Whittaker (tomw@xxxxxxxxxxxxx)
University of Wisconsin-Madison
Space Science and Engineering Center
Phone/VoiceMail: 608/262-2759
Fax: 608/262-5974
