Example usage for java.awt.event ActionEvent getSource

List of usage examples for java.awt.event ActionEvent getSource

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Introduction

In this page you can find the example usage for java.awt.event ActionEvent getSource.

Prototype

public Object getSource()

Source Link

Document

The object on which the Event initially occurred.

Usage

From source file:SciTK.PlotXYZBlock.java

private void init(String x_label, String y_label, String window_title) {
    chart = ChartFactory.createScatterPlot("", x_label, y_label, data, PlotOrientation.VERTICAL, false, true,
            false);//from www.  j  ava 2s . com

    // turn off borders of the plot:
    XYPlot p = chart.getXYPlot();
    p.getDomainAxis().setLowerMargin(0.0);
    p.getDomainAxis().setUpperMargin(0.0);
    p.getRangeAxis().setLowerMargin(0.0);
    p.getRangeAxis().setUpperMargin(0.0);

    // --------------------------------------------
    //          set up a lookup table
    // --------------------------------------------
    // this is how we render the block plots:
    XYBlockRenderer renderer = new XYBlockRenderer();
    // need to find max and min z of the data set:
    double min = 0;
    double max = 0;
    for (int i = 0; i < data.getSeriesCount(); i++) // iterate over data sets
    {
        for (int j = 0; j < data.getItemCount(i); j++) // iterate over points in dataset
        {
            if (data.getZValue(i, j) < min)
                min = data.getZValue(i, j);
            else if (data.getZValue(i, j) > max)
                max = data.getZValue(i, j);
        }
    }
    // create paint scale using min and max values, default color black:
    LookupPaintScale paintScale = new LookupPaintScale(min, max, Color.black);
    // set up the LUT:
    double step_size = (max - min) / 255.; // step size for LUT
    for (int i = 0; i < 256; i++) {
        paintScale.add(min + i * step_size, new Color(i, i, i, 255));
    }
    renderer.setPaintScale(paintScale);
    // set this renderer to the plot:
    p.setRenderer(renderer);

    // --------------------------------------------
    //          set up a color bar
    // --------------------------------------------
    // create an array of display labels:
    num_labels = 10; // default to 10 labels on color bar
    double display_step_size = (max - min) / ((double) num_labels);
    String[] scale_bar_labels = new String[num_labels + 1];
    // to format numbers in scientific notation:
    DecimalFormat formater = new DecimalFormat("0.#E0");
    // create list of labesl:
    for (int i = 0; i <= num_labels; i++) {
        scale_bar_labels[i] = formater.format(min + i * display_step_size);
    }
    // create axis:
    SymbolAxis scaleAxis = new SymbolAxis(null, scale_bar_labels);
    scaleAxis.setRange(min, max);
    scaleAxis.setPlot(new PiePlot());
    scaleAxis.setGridBandsVisible(false);
    // set up the paint scale:
    psl = new PaintScaleLegend(paintScale, scaleAxis);
    psl.setBackgroundPaint(new Color(255, 255, 255, 0)); // clear background
    // set up frame with buffer region to allow text display
    psl.setFrame(new LineBorder((Paint) Color.BLACK, new BasicStroke((float) 1.0),
            new RectangleInsets(15, 10, 15, 10)));
    psl.setAxisOffset(5.0);
    // display on right side:
    psl.setPosition(RectangleEdge.RIGHT);
    // margin around color scale:
    psl.setMargin(new RectangleInsets(20, 15, 20, 15));
    // add to the chart so it will be displayed by default:
    chart.addSubtitle(psl);

    // --------------------------------------------
    //          WINDOW-RELATED UI
    // --------------------------------------------
    // set up the generic plot UI:
    super.window_title = window_title;
    super.initUI();

    // add another menu item
    JMenuBar mb = super.getJMenuBar(); // get the menu bar
    // find menu named "Plot"
    JMenu menu_plot = null;
    for (int i = 0; i < mb.getMenuCount(); i++) {
        if (mb.getMenu(i).getText() == "Plot")
            menu_plot = mb.getMenu(i);
    }
    // Add a new checkbox for the color scale bar
    JCheckBoxMenuItem menu_plot_scalebar = new JCheckBoxMenuItem("Color Scale");
    menu_plot_scalebar.setToolTipText("Show color scale bar?");
    menu_plot_scalebar.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent event) {
            AbstractButton aButton = (AbstractButton) event.getSource();
            boolean selected = aButton.getModel().isSelected();
            setScaleBar(selected);
        }
    });
    // set appropirate checkbox state:
    menu_plot_scalebar.setState(true);
    if (menu_plot != null) // sanity check
        menu_plot.add(menu_plot_scalebar);

}

From source file:com.projity.reports.view.ReportView.java

public void init(CoordinatesConverter coord) {
    initializing = true;// ww w  . j  av  a  2s  .  co  m
    this.coord = coord;
    setLayout(layout);
    reportLabel = new JLabel(Messages.getString("ReportView.Report")); //$NON-NLS-1$
    reportChoice = new JComboBox(ReportUtil.getReportDefinitions());
    reportChoice.setSelectedIndex(0);
    reportDefinition = (ReportDefinition) reportChoice.getSelectedItem();
    fieldArray = reportDefinition.getMainFieldArray();
    reportChoice.addActionListener(new ActionListener() {

        public void actionPerformed(ActionEvent arg0) {
            reportDefinition = (ReportDefinition) ((JComboBox) arg0.getSource()).getSelectedItem();
            fieldArray = reportDefinition.getMainFieldArray();
            dirty = true;
            showReport();
            initColumns();
        }
    });

    columnsLabel = new JLabel(Messages.getString("ReportView.Columns")); //$NON-NLS-1$
    columnsChoice = new JComboBox();
    initColumns();
    columnsChoice.addActionListener(new ActionListener() {

        public void actionPerformed(ActionEvent arg0) {
            fieldArray = (SpreadSheetFieldArray) ((JComboBox) arg0.getSource()).getSelectedItem();
            dirty = true;
            showReport();
        }
    });
    add(header(), BorderLayout.PAGE_START);
    showReport();
    initializing = false;
}

From source file:com.unicornlabs.kabouter.gui.power.PowerPanel.java

private void liveCheckBoxActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_liveCheckBoxActionPerformed
    JCheckBox source = (JCheckBox) evt.getSource();
    endTimeSpinner.setEnabled(!source.isSelected());
    endDateChooser.setEnabled(!source.isSelected());
    startTimeSpinner.setEnabled(!source.isSelected());
    startDateChooser.setEnabled(!source.isSelected());
}

From source file:com.game.ui.views.PlayerEditor.java

@Override
public void actionPerformed(ActionEvent ae) {
    validationMess.setText("");
    validationMess.setVisible(false);/*  w ww. j a  va  2s  .  c  om*/
    if (ae.getActionCommand().equalsIgnoreCase("dropDown")) {
        JComboBox comboBox = (JComboBox) ae.getSource();
        String type = comboBox.getSelectedItem().toString();
        for (GameCharacter user : GameBean.playerDetails) {
            Player player = (Player) user;
            if (player.getType().equalsIgnoreCase(type)) {
                ((JTextField) leftPanel.getComponent(2)).setText(player.getName());
                ((JTextField) leftPanel.getComponent(4)).setText(player.getImagePath());
                ((JTextField) leftPanel.getComponent(6)).setText(new Integer(player.getHealth()).toString());
                ((JTextField) leftPanel.getComponent(8)).setText(new Integer(player.getAttackPts()).toString());
                ((JTextField) leftPanel.getComponent(10)).setText(new Integer(player.getArmor()).toString());
                ((JTextField) leftPanel.getComponent(12))
                        .setText(new Integer(player.getAttackRange()).toString());
                ((JTextField) leftPanel.getComponent(14)).setText(new Integer(player.getMovement()).toString());
                ((JTextField) leftPanel.getComponent(16)).setText(player.getType());
                JComboBox cBox = (JComboBox) leftPanel.getComponent(18);
                cBox.setSelectedItem(player.getInventory().getEquippedWeapon().getName());
                lvlPanel.txtFields[0].setText("" + player.getLevel());
                lvlPanel.txtFields[1].setText("" + player.getExp());
                lvlPanel.txtFields[2].setText("" + player.getStrength());
                lvlPanel.txtFields[3].setText("" + player.getVitality());
                lvlPanel.txtFields[4].setText("" + player.getDexterity());
                lvlPanel.txtFields[5].setText("" + player.getWisdom());
                break;
                //                    return;
            }
        }
    } else {
        String name = ((JTextField) leftPanel.getComponent(2)).getText();
        String image = ((JTextField) leftPanel.getComponent(4)).getText();
        String health = ((JTextField) leftPanel.getComponent(6)).getText();
        String attackPts = ((JTextField) leftPanel.getComponent(8)).getText();
        String armourPts = ((JTextField) leftPanel.getComponent(10)).getText();
        String attackRnge = ((JTextField) leftPanel.getComponent(12)).getText();
        String movement = ((JTextField) leftPanel.getComponent(14)).getText();
        String type = ((JTextField) leftPanel.getComponent(16)).getText();
        String weapon = ((JComboBox) leftPanel.getComponent(18)).getSelectedItem().toString();
        int attr[] = new int[6];
        attr[0] = Integer.parseInt(lvlPanel.txtFields[0].getText());
        attr[1] = Integer.parseInt(lvlPanel.txtFields[1].getText());
        attr[2] = Integer.parseInt(lvlPanel.txtFields[2].getText());
        attr[3] = Integer.parseInt(lvlPanel.txtFields[3].getText());
        attr[4] = Integer.parseInt(lvlPanel.txtFields[4].getText());
        attr[5] = Integer.parseInt(lvlPanel.txtFields[5].getText());
        //            validationMess.setText("");
        //            validationMess.setVisible(false);
        if (StringUtils.isNotBlank(image) && StringUtils.isNotBlank(health) && StringUtils.isNotBlank(attackPts)
                && StringUtils.isNotBlank(armourPts) && StringUtils.isNotBlank(attackRnge)
                && StringUtils.isNotBlank(movement) && StringUtils.isNotBlank(type)
                && StringUtils.isNotBlank(weapon)) {
            validationMess.setVisible(false);
            Player player = new Player();
            //have to remove the following statement later..
            player.setName(name);
            player.setAttackPts(Integer.parseInt(attackPts));
            player.setAttackRange(Integer.parseInt(attackRnge));
            player.setHealth(Integer.parseInt(health));
            player.setImagePath(image);
            player.setMovement(Integer.parseInt(movement));
            player.setArmor(Integer.parseInt(armourPts));
            player.setType(type);
            Inventory inventory = new Inventory();
            int position = GameUtils.getPositionOfWeaponItem(weapon);
            Weapon weaponObj = (Weapon) GameBean.weaponDetails.get(position);
            inventory.setEquippedWeapon(weaponObj);
            player.setInventory(inventory);
            player.setLevel(attr[0]);
            player.setExp(attr[1]);
            player.setStrength(attr[2]);
            player.setVitality(attr[3]);
            player.setDexterity(attr[4]);
            player.setWisdom(attr[5]);
            boolean characterAlrdyPresent = false;
            for (int i = 0; i < GameBean.playerDetails.size(); i++) {
                Player charFromList = (Player) GameBean.playerDetails.get(i);
                if (charFromList.getType().equalsIgnoreCase(type)) {
                    GameBean.playerDetails.remove(i);
                    characterAlrdyPresent = true;
                }
            }
            GameBean.playerDetails.add(player);
            try {
                GameUtils.writeCharactersToXML(GameBean.playerDetails, Configuration.PATH_FOR_USER_CHARACTERS);
                validationMess.setText("Saved Successfully..");
                validationMess.setVisible(true);
                if (!characterAlrdyPresent) {
                    comboBox.addItem(type);
                    comboBox.removeActionListener(this);
                    comboBox.setSelectedItem(type);
                    comboBox.addActionListener(this);
                }
            } catch (Exception e) {
                System.out.println("PlayerEditor : actionPerformed() : Some error occured " + e);
                validationMess.setText("Some error occured..");
                validationMess.setVisible(true);
                e.printStackTrace();
            }

        } else {
            validationMess.setText("Pls enter all the fields or pls choose a character from the drop down");
            validationMess.setVisible(true);
        }
    }
    this.revalidate();
    //        JFrame frame = (JFrame)SwingUtilities.getAncestorNamed("Frame", this);
    //        frame.revalidate();
}

From source file:GeometryByReferenceTest.java

public void actionPerformed(ActionEvent e) {
    Object target = e.getSource();
    GeometryArray geo;/*from  w  w  w. ja  va  2  s.c  o  m*/
    boolean setColor = false, setVertex = false;
    if (target == geomType) {
        geo = geoArrays[geomType.getSelectedIndex()];
        // Set everything to null, and set it later ..
        geo.setColorRefFloat(null);
        geo.setColorRef3f(null);
        geo.setCoordRefFloat(null);
        geo.setCoordRef3f(null);
        shape.setGeometry(geoArrays[geomType.getSelectedIndex()]);

        setColor = true;
        setVertex = true;

    } else if (target == transparency) {
        if (transparency.isSelected()) {
            transp.setTransparencyMode(TransparencyAttributes.BLENDED);
        } else {
            transp.setTransparencyMode(TransparencyAttributes.NONE);
        }

    } else if (target == updates) {
        updateIndex = updates.getSelectedIndex();
        if (updateIndex == 1) {
            System.out.println("Doing coordinate update");
            ((GeometryArray) (shape.getGeometry())).updateData(this);
        } else if (updateIndex == 2) {
            System.out.println("Doing color update");
            ((GeometryArray) (shape.getGeometry())).updateData(this);
        }

    } else if (target == vertexType) {
        geo = ((GeometryArray) shape.getGeometry());
        if (vertexIndex == 0) {
            geo.setCoordRefFloat(null);
        } else if (vertexIndex == 1) {
            geo.setCoordRef3f(null);
        }
        vertexIndex = vertexType.getSelectedIndex();
        setVertex = true;
    } else if (target == colorType) {
        geo = (GeometryArray) shape.getGeometry();
        if (colorIndex == 0) {
            geo.setColorRefFloat(null);
        } else if (colorIndex == 1) {
            geo.setColorRef3f(null);
        }
        colorIndex = colorType.getSelectedIndex();
        setColor = true;
    }

    if (setVertex) {
        geo = (GeometryArray) shape.getGeometry();
        if (vertexIndex == 0) {
            if (geo instanceof IndexedGeometryArray)
                geo.setCoordRefFloat(indexedFloatVerts);
            else
                geo.setCoordRefFloat(floatVerts);
        } else if (vertexIndex == 1) {
            if (geo instanceof IndexedGeometryArray)
                geo.setCoordRef3f(indexedP3fVerts);
            else
                geo.setCoordRef3f(p3fVerts);
        }

    }
    if (setColor) {
        geo = (GeometryArray) shape.getGeometry();
        if (colorIndex == 0) {
            if (geo instanceof IndexedGeometryArray)
                geo.setColorRefFloat(indexedFloatClrs);
            else
                geo.setColorRefFloat(floatClrs);
        } else if (colorIndex == 1) {
            if (geo instanceof IndexedGeometryArray)
                geo.setColorRef3f(indexedC3fClrs);
            else
                geo.setColorRef3f(c3fClrs);
        }
    }

}

From source file:jgnash.ui.commodity.SecuritiesHistoryDialog.java

@Override
public void actionPerformed(final ActionEvent e) {
    if (e.getSource() == applyButton) {
        addNode();/*from w w  w  .  j  av a2s  . c  o m*/
    } else if (e.getSource() == clearButton) {
        clearForm();
    } else if (e.getSource() == deleteButton) {
        removeNode();
    } else if (e.getSource() == updateButton) {
        netAddNode();
    } else if (e.getSource() == securityCombo) {
        changeNode();
    } else if (e.getSource() == closeButton) {
        dispatchEvent(new WindowEvent(this, WindowEvent.WINDOW_CLOSING));
    }
}

From source file:com.lfv.lanzius.server.WorkspacePanel.java

public void actionPerformed(ActionEvent e) {

    JButton button = (JButton) e.getSource();

    //if(button==buttonServer) {
    //    JOptionPane.showMessageDialog(server.getFrame(),"Use the menu to stop the server!","Info!",JOptionPane.INFORMATION_MESSAGE);
    //}//from  ww  w  .  j av  a2 s .c  o  m
    //else

    if (button == buttonLoad) {
        server.menuChoiceLoadExercise();
        deselectAll();
    }

    else if (button == buttonLink) {
        try {
            if (isTerminalSelection) {
                if (server.menuChoiceTerminalLink(selectionList.get(0).intValue()))
                    deselectAll();
            } else
                deselectAll();
        } catch (ArrayIndexOutOfBoundsException ex) {
            log.warn("Invalid selection list when linking from workspace panel");
        }
    }

    else if (button == buttonUnlink) {
        if (isTerminalSelection) {
            if (server.menuChoiceTerminalUnlink(selectionList))
                deselectAll();
        } else {
            boolean deselectAll = false;
            Iterator<Integer> iteri = selectionList.iterator();
            while (iteri.hasNext()) {
                boolean b = server.menuChoiceTerminalUnlinkGroup(iteri.next().intValue());
                deselectAll = deselectAll || b;
            }

            if (deselectAll)
                deselectAll();
        }
    }

    else if (button == buttonSwap) {
        try {
            if (isTerminalSelection)
                server.menuChoiceTerminalSwap(selectionList.get(0).intValue(), selectionList.get(1).intValue());
            deselectAll();
        } catch (ArrayIndexOutOfBoundsException ex) {
            log.warn("Invalid selection list when swapping from workspace panel");
        }
    }

    else if (button == buttonMonitor) {
        server.menuChoiceTerminalMonitor(selectionList.get(0).intValue());
        deselectAll();
    }

    else if (button == buttonStart) {
        boolean deselectAll = false;
        Iterator<Integer> iteri = selectionList.iterator();
        while (iteri.hasNext()) {
            boolean b = server.menuChoiceGroupStart(iteri.next().intValue());
            deselectAll = deselectAll || b;
        }

        if (deselectAll)
            deselectAll();
    }

    else if (button == buttonStop) {
        boolean deselectAll = false;
        Iterator<Integer> iteri = selectionList.iterator();
        while (iteri.hasNext()) {
            boolean b = server.menuChoiceGroupStop(iteri.next().intValue());
            deselectAll = deselectAll || b;
        }

        if (deselectAll)
            deselectAll();
    }

    else if (button == buttonIsaStart) {
        view.initIsaChart();
        if (selectionList != null) {
            Iterator<Integer> i = selectionList.iterator();
            int tid;
            while (i.hasNext()) {
                tid = i.next().intValue();
                if (server.isaClient(tid)) {
                    //view.removeIsaTrace(tid);
                    server.isaStartStop(tid);
                } else if (server.isaStartStop(tid)) {
                    view.addIsaTrace(tid);
                }
            }
            updateButtons(false, null);
            repaint();
        }
    }
}

From source file:javaresturentdesktopclient.AddFoodItemPage.java

private void jComboBox1ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jComboBox1ActionPerformed
    // TODO add your handling code here:
    int index;/*from  ww  w  .ja v a 2 s  .c o  m*/

    index = ((JComboBox) evt.getSource()).getSelectedIndex();
    item = catagoryId[index];

    if (item == 1) {
        CategoryId = Constant.CHINEESE;
    } else if (item == 2) {
        CategoryId = Constant.BANGLA;
    } else {
        CategoryId = Constant.INDIAN;
    }
    ShowFoodTable(CategoryId);
}

From source file:ImageComponentByReferenceTest.java

public void actionPerformed(ActionEvent e) {
    Object target = e.getSource();

    if (target == rasterType) {
        if (rasterType.getSelectedIndex() < 4) {
            raster.setSize(w1, h1);//from   w ww . j a  v a  2 s .c  om
        } else {
            raster.setSize(checkw, checkh);
        }
        raster.setImage(image[rasterType.getSelectedIndex()]);
    } else if (target == texType) {
        boxShape.setAppearance(dummyApp);
        if (texType.getSelectedIndex() < 4) {
            texOne.setImage(0, image[texType.getSelectedIndex()]);
            app.setTexture(texOne);
        } else {
            texCheckBoard.setImage(0, image[texType.getSelectedIndex()]);
            app.setTexture(texCheckBoard);
        }

        boxShape.setAppearance(app);
    }

}

From source file:edu.mit.fss.examples.visual.gui.WorldWindVisualization.java

/**
 * Instantiates a new world wind visualization.
 *
 * @throws OrekitException the orekit exception
 *//*from  w  w  w .  j  a  v a2s  .  c  om*/
public WorldWindVisualization() throws OrekitException {
    logger.trace("Creating Orekit reference frames.");
    eme = ReferenceFrame.EME2000.getOrekitFrame();
    itrf = ReferenceFrame.ITRF2008.getOrekitFrame();
    // world wind frame is a fixed rotation from Earth inertial frame
    wwj = new Frame(itrf, new Transform(date, new Rotation(RotationOrder.ZXZ, 0, -Math.PI / 2, -Math.PI / 2)),
            "World Wind");

    logger.trace("Creating World Window GL canvas and adding to panel.");
    wwd = new WorldWindowGLCanvas();
    wwd.setModel(new BasicModel());
    wwd.setPreferredSize(new Dimension(800, 600));
    setLayout(new BorderLayout());
    add(wwd, BorderLayout.CENTER);

    logger.trace("Creating and adding a renderable layer.");
    displayLayer = new RenderableLayer();
    wwd.getModel().getLayers().add(displayLayer);

    logger.trace("Creating and adding a marker layer.");
    markerLayer = new MarkerLayer();
    // allow markers above/below surface
    markerLayer.setOverrideMarkerElevation(false);
    wwd.getModel().getLayers().add(markerLayer);

    logger.trace("Creating and adding a sun renderable.");
    Vector3D position = sun.getPVCoordinates(date, wwj).getPosition();
    sunShape = new Ellipsoid(wwd.getModel().getGlobe().computePositionFromPoint(convert(position)), 696000000.,
            696000000., 696000000.);
    ShapeAttributes sunAttributes = new BasicShapeAttributes();
    sunAttributes.setInteriorMaterial(Material.YELLOW);
    sunAttributes.setInteriorOpacity(1.0);
    sunShape.setAttributes(sunAttributes);
    displayLayer.addRenderable(sunShape);

    logger.trace("Creating and adding a terminator.");
    LatLon antiSun = LatLon.fromRadians(-sunShape.getCenterPosition().getLatitude().radians,
            FastMath.PI + sunShape.getCenterPosition().getLongitude().radians);
    // set radius to a quarter Earth chord at the anti-sun position less
    // a small amount (100 m) to avoid graphics problems
    terminatorShape = new SurfaceCircle(antiSun,
            wwd.getModel().getGlobe().getRadiusAt(antiSun) * FastMath.PI / 2 - 100);
    ShapeAttributes nightAttributes = new BasicShapeAttributes();
    nightAttributes.setInteriorMaterial(Material.BLACK);
    nightAttributes.setInteriorOpacity(0.5);
    terminatorShape.setAttributes(nightAttributes);
    displayLayer.addRenderable(terminatorShape);

    logger.trace("Creating and adding a panel for buttons.");
    JPanel buttonPanel = new JPanel(new FlowLayout(FlowLayout.LEFT));
    buttonPanel.add(new JCheckBox(new AbstractAction("Inertial Frame") {
        private static final long serialVersionUID = 2287109397693524964L;

        @Override
        public void actionPerformed(ActionEvent e) {
            setInertialFrame(((JCheckBox) e.getSource()).isSelected());
        }
    }));
    buttonPanel.add(new JButton(editOptionsAction));
    add(buttonPanel, BorderLayout.SOUTH);

    logger.trace(
            "Creating a timer to rotate the sun renderable, " + "terminator surface circle, and stars layer.");
    Timer rotationTimer = new Timer(15, new ActionListener() {
        @Override
        public void actionPerformed(ActionEvent e) {
            wwd.redraw();
            try {
                BasicOrbitView wwdView;
                if (wwd.getView() instanceof BasicOrbitView) {
                    wwdView = (BasicOrbitView) wwd.getView();
                } else {
                    return;
                }

                // rotate camera to simulate inertial frame
                if (wwd.getView().isAnimating() || !inertialFrame.get()) {
                    // update eme datum
                    rotationDatum = wwj.getTransformTo(eme, date)
                            .transformPosition(convert(wwdView.getCenterPoint()));
                } else if (inertialFrame.get()) {
                    Position newCenter = wwd.getModel().getGlobe().computePositionFromPoint(
                            convert(eme.getTransformTo(wwj, date).transformPosition(rotationDatum)));
                    // move to eme datum
                    wwdView.setCenterPosition(newCenter);
                }

                // rotate stars layer
                for (Layer layer : wwd.getModel().getLayers()) {
                    if (layer instanceof StarsLayer) {
                        StarsLayer stars = (StarsLayer) layer;
                        // find the EME coordinates of (0,0)
                        Vector3D emeDatum = wwj.getTransformTo(eme, date).transformPosition(convert(
                                wwd.getModel().getGlobe().computePointFromLocation(LatLon.fromDegrees(0, 0))));
                        // find the WWJ coordinates the equivalent point in ITRF
                        Vector3D wwjDatum = itrf.getTransformTo(wwj, date).transformPosition(emeDatum);
                        // set the longitude offset to the opposite of 
                        // the difference in longitude (i.e. from 0)
                        stars.setLongitudeOffset(wwd.getModel().getGlobe()
                                .computePositionFromPoint(convert(wwjDatum)).getLongitude().multiply(-1));
                    }
                }
            } catch (OrekitException ex) {
                logger.error(ex);
            }
        }
    });
    // set initial 2-second delay for initialization
    rotationTimer.setInitialDelay(2000);
    rotationTimer.start();
}