terrainprofiler.java

world wind java sdk 源码

/*
Copyright (C) 2001, 2006 United States Government
as represented by the Administrator of the
National Aeronautics and Space Administration.
All Rights Reserved.
*/
package gov.nasa.worldwind.examples;

import gov.nasa.worldwind.layers.TerrainProfileLayer;
import gov.nasa.worldwind.view.OrbitView;
import gov.nasa.worldwind.geom.LatLon;

import javax.swing.*;
import javax.swing.border.CompoundBorder;
import javax.swing.border.TitledBorder;
import javax.swing.event.ChangeListener;
import javax.swing.event.ChangeEvent;
import java.awt.*;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;

/**
 * @author tag
 * @version $Id: TerrainProfiler.java 5176 2008-04-25 21:31:06Z patrickmurris $
 */
public class TerrainProfiler extends ApplicationTemplate
{
    public static class AppFrame extends ApplicationTemplate.AppFrame
    {
        private String follow;
        private boolean showEyePosition;
        private boolean keepProportions;
        private boolean zeroBased;
        private Dimension graphDimension;
        private double profileLengthFactor;

        private JLabel helpLabel;
        private JSlider lengthSlider;
        private JCheckBox showEyeCheck;
        private TerrainProfileLayer tpl;

        public AppFrame()
        {
            super(true, true, false);

            try
            {
                // Add TerrainProfileLayer
                this.tpl = new TerrainProfileLayer();
                this.tpl.setEventSource(this.getWwd());
                this.tpl.setStartLatLon(LatLon.fromDegrees(0, -10));
                this.tpl.setEndLatLon(LatLon.fromDegrees(0, 65));
                insertBeforeCompass(this.getWwd(), tpl);
                this.getLayerPanel().update(this.getWwd());

                // retreive default values
                this.follow = this.tpl.getFollow();
                this.showEyePosition = this.tpl.getShowEyePosition();
                this.keepProportions = this.tpl.getKeepProportions();
                this.zeroBased = this.tpl.getZeroBased();
                this.graphDimension = tpl.getSize();
                this.profileLengthFactor = tpl.getProfileLenghtFactor();

                // Add control panel
                this.getLayerPanel().add(makeControlPanel(),  BorderLayout.SOUTH);

            }
            catch (Exception e)
            {
                e.printStackTrace();
            }
        }
        
        private JPanel makeControlPanel()
        {
            JPanel controlPanel = new JPanel(new GridLayout(0, 1, 0, 4));

            // Show eye position check box
            JPanel buttonsPanel = new JPanel(new GridLayout(0, 2, 0, 0));
            this.showEyeCheck = new JCheckBox("Show eye");
            this.showEyeCheck.addActionListener(new ActionListener()
            {
                public void actionPerformed(ActionEvent actionEvent)
                {
                    showEyePosition = ((JCheckBox)actionEvent.getSource()).isSelected();
                    update();
                }
            });
            this.showEyeCheck.setSelected(this.showEyePosition);
            this.showEyeCheck.setEnabled(this.follow.equals(TerrainProfileLayer.FOLLOW_EYE));
            buttonsPanel.add(this.showEyeCheck);
            // Keep proportions check box
            JCheckBox cbKeepProportions = new JCheckBox("Keep proportions");
            cbKeepProportions.addActionListener(new ActionListener()
            {
                public void actionPerformed(ActionEvent actionEvent)
                {
                    keepProportions = ((JCheckBox)actionEvent.getSource()).isSelected();
                    update();
                }
            });
            cbKeepProportions.setSelected(this.keepProportions);
            buttonsPanel.add(cbKeepProportions);

            // Zero based graph check box
            JPanel buttonsPanel2 = new JPanel(new GridLayout(0, 2, 0, 0));
            JCheckBox cb = new JCheckBox("Zero based");
            cb.addActionListener(new ActionListener()
            {
                public void actionPerformed(ActionEvent actionEvent)
                {
                    zeroBased = ((JCheckBox)actionEvent.getSource()).isSelected();
                    update();
                }
            });
            cb.setSelected(this.zeroBased);
            buttonsPanel2.add(new JLabel("")); // Dummy
            buttonsPanel2.add(cb);

            // Dimension combo
            JPanel dimensionPanel = new JPanel(new GridLayout(0, 2, 0, 0));
            dimensionPanel.add(new JLabel("  Dimension:"));
            final JComboBox cbDimension = new JComboBox(new String[] {"Small", "Medium", "Large"});
            cbDimension.addActionListener(new ActionListener()
            {
                public void actionPerformed(ActionEvent actionEvent)
                {
                    String size = (String) cbDimension.getSelectedItem();
                    if(size.equals("Small"))
                    {
                        graphDimension = new Dimension(250, 100);
                    }
                    else if(size.equals("Medium"))
                    {
                        graphDimension = new Dimension(450, 140);
                    }
                    else if(size.equals("Large"))
                    {
                        graphDimension = new Dimension(655, 240);
                    }
                    update();
                }
            });
            cbDimension.setSelectedItem("Small");
            dimensionPanel.add(cbDimension);

            // Profile length factor slider
            JPanel sliderPanel = new JPanel(new GridLayout(0, 1, 0, 0));
            JSlider s = new JSlider(JSlider.HORIZONTAL, 0, 30, (int)(this.profileLengthFactor * 10));  // -5 - 5 in tenth
            s.setMajorTickSpacing(10);
            s.setMinorTickSpacing(1);
            //s.setPaintTicks(true);
            //s.setPaintLabels(true);
            s.setToolTipText("Profile length");
            s.addChangeListener(new ChangeListener()
            {
                public void stateChanged(ChangeEvent event)
                {
                    JSlider s = (JSlider)event.getSource();
                    if (!s.getValueIsAdjusting())
                    {
                        profileLengthFactor = (double)s.getValue() / 10;
                        update();
                    }
                }

            });
            sliderPanel.add(s);
            this.lengthSlider = s;
            
            // Help label
            JPanel textPanel = new JPanel(new GridLayout(0, 1, 0, 0));
            this.helpLabel = new JLabel("Tip: move mouse over the graph.");
            this.helpLabel.setHorizontalAlignment(SwingConstants.CENTER);
            textPanel.add(this.helpLabel);

            // Follow behavior combo
            JPanel followPanel = new JPanel(new GridLayout(0, 2, 0, 0));
            followPanel.add(new JLabel("  Follow:"));
            final JComboBox cbFollow = new JComboBox(new String[] {"View", "Cursor", "Eye", "None", "Object"});
            cbFollow.addActionListener(new ActionListener()
            {
                public void actionPerformed(ActionEvent actionEvent)
                {
                    String size = (String) cbFollow.getSelectedItem();
                    if(size.equals("View"))
                    {
                        follow = TerrainProfileLayer.FOLLOW_VIEW;
                        helpLabel.setEnabled(true);
                        showEyeCheck.setEnabled(false);
                        lengthSlider.setEnabled(true);
                    }
                    else if(size.equals("Cursor"))
                    {
                        follow = TerrainProfileLayer.FOLLOW_CURSOR;
                        helpLabel.setEnabled(false);
                        showEyeCheck.setEnabled(false);
                        lengthSlider.setEnabled(true);
                    }
                    else if(size.equals("Eye"))
                    {
                        follow = TerrainProfileLayer.FOLLOW_EYE;
                        helpLabel.setEnabled(true);
                        showEyeCheck.setEnabled(true);
                        lengthSlider.setEnabled(true);
                    }
                    else if(size.equals("None"))
                    {
                        follow = TerrainProfileLayer.FOLLOW_NONE;
                        helpLabel.setEnabled(true);
                        showEyeCheck.setEnabled(false);
                        lengthSlider.setEnabled(false);
                    }
                    else if(size.equals("Object"))
                    {
                        follow = TerrainProfileLayer.FOLLOW_OBJECT;
                        helpLabel.setEnabled(true);
                        showEyeCheck.setEnabled(true);
                        lengthSlider.setEnabled(true);
                        OrbitView view = (OrbitView)getWwd().getView();
                        tpl.setObjectPosition(getWwd().getView().getEyePosition());
                        tpl.setObjectHeading(view.getHeading());

                    }
                    update();
                }
            });
            cbFollow.setSelectedItem("View");
            followPanel.add(cbFollow);

            // Assembly
            controlPanel.add(dimensionPanel);
            controlPanel.add(followPanel);
            controlPanel.add(buttonsPanel);
            controlPanel.add(buttonsPanel2);
            controlPanel.add(sliderPanel);
            controlPanel.add(textPanel);
            controlPanel.setBorder(
                new CompoundBorder(BorderFactory.createEmptyBorder(9, 9, 9, 9), new TitledBorder("Terrain profile")));
            controlPanel.setToolTipText("Terrain profile controls");
            return controlPanel;
        }

        // Update worldwind
        private void update()
        {
            this.tpl.setFollow(this.follow);
            this.tpl.setKeepProportions(this.keepProportions);
            this.tpl.setZeroBased(this.zeroBased);
            this.tpl.setSize(this.graphDimension);
            this.tpl.setShowEyePosition(this.showEyePosition);
            this.tpl.setProfileLengthFactor(this.profileLengthFactor);
            this.getWwd().redraw();
        }
    }

    public static void main(String[] args)
    {
        ApplicationTemplate.start("World Wind Terrain Profiler", AppFrame.class);
    }
}