src/tim/prune/function/ProjectPoint.java

   1 package tim.prune.function;
   2
   3 import java.awt.BorderLayout;
   4 import java.awt.Component;
   5 import java.awt.FlowLayout;
   6 import java.awt.event.ActionEvent;
   7 import java.awt.event.ActionListener;
   8 import java.awt.event.KeyAdapter;
   9 import java.awt.event.KeyEvent;
  10 import java.awt.event.MouseAdapter;
  11 import java.awt.event.MouseEvent;
  12
  13 import javax.swing.BorderFactory;
  14 import javax.swing.JButton;
  15 import javax.swing.JDialog;
  16 import javax.swing.JLabel;
  17 import javax.swing.JPanel;
  18 import javax.swing.JTextField;
  19 import javax.swing.SwingConstants;
  20
  21 import tim.prune.App;
  22 import tim.prune.GenericFunction;
  23 import tim.prune.I18nManager;
  24 import tim.prune.config.Config;
  25 import tim.prune.data.Coordinate;
  26 import tim.prune.data.DataPoint;
  27 import tim.prune.data.Distance;
  28 import tim.prune.data.Field;
  29 import tim.prune.data.Latitude;
  30 import tim.prune.data.Longitude;
  31 import tim.prune.data.Unit;
  32 import tim.prune.data.UnitSetLibrary;
  33 import tim.prune.gui.DecimalNumberField;
  34 import tim.prune.gui.GuiGridLayout;
  35 import tim.prune.gui.WholeNumberField;
  36
  37
  38 /**
  39  * Class to provide the function to project the current point
  40  * with a given bearing and distance
  41  */
  42 public class ProjectPoint extends GenericFunction
  43 {
  44         private JDialog _dialog = null;
  45         private WholeNumberField _bearingField = null;
  46         private JLabel _distanceDescLabel = null;
  47         private DecimalNumberField _distanceField = null;
  48         private boolean _distanceIsMetric = true;
  49         private JTextField _nameField = null;
  50         private JButton _okButton = null;
  51
  52
  53         /**
  54          * Constructor
  55          * @param inApp application object for callback
  56          */
  57         public ProjectPoint(App inApp)
  58         {
  59                 super(inApp);
  60         }
  61
  62         /** Get the name key */
  63         public String getNameKey() {
  64                 return "function.projectpoint";
  65         }
  66
  67         /**
  68          * Begin the function
  69          */
  70         public void begin()
  71         {
  72                 // Make dialog window
  73                 if (_dialog == null)
  74                 {
  75                         _dialog = new JDialog(_parentFrame, I18nManager.getText(getNameKey()), true);
  76                         _dialog.setLocationRelativeTo(_parentFrame);
  77                         _dialog.setDefaultCloseOperation(JDialog.DISPOSE_ON_CLOSE);
  78                         _dialog.getContentPane().add(makeDialogComponents());
  79                         _dialog.pack();
  80                 }
  81
  82                 // Clear fields
  83                 _bearingField.setText("");
  84                 _distanceField.setText("");
  85                 _nameField.setText("");
  86                 // Set the units of the distance label
  87                 setLabelText();
  88                 enableOK();
  89                 _dialog.setVisible(true);
  90         }
  91
  92
  93         /**
  94          * Create dialog components
  95          * @return Panel containing all gui elements in dialog
  96          */
  97         private Component makeDialogComponents()
  98         {
  99                 JPanel dialogPanel = new JPanel();
 100                 dialogPanel.setLayout(new BorderLayout(0, 10));
 101                 dialogPanel.add(new JLabel(I18nManager.getText("dialog.projectpoint.desc")), BorderLayout.NORTH);
 102                 JPanel mainPanel = new JPanel();
 103                 GuiGridLayout grid = new GuiGridLayout(mainPanel);
 104                 _bearingField = new WholeNumberField(3);
 105                 _distanceField = new DecimalNumberField(false);
 106                 // Listeners to enable/disable ok button
 107                 KeyAdapter keyListener = new KeyAdapter() {
 108                         /** Key released */
 109                         public void keyReleased(KeyEvent inE) {
 110                                 enableOK();
 111                                 if (inE.getKeyCode() == KeyEvent.VK_ESCAPE) {
 112                                         _dialog.dispose();
 113                                 }
 114                         }
 115                 };
 116                 MouseAdapter mouseListener = new MouseAdapter() {
 117                         public void mouseReleased(MouseEvent inE) {
 118                                 enableOK();
 119                         }
 120                 };
 121                 _bearingField.addKeyListener(keyListener);
 122                 _bearingField.addMouseListener(mouseListener);
 123                 _distanceField.addKeyListener(keyListener);
 124                 _distanceField.addMouseListener(mouseListener);
 125
 126                 JLabel bearingLabel = new JLabel(I18nManager.getText("dialog.projectpoint.bearing"));
 127                 bearingLabel.setHorizontalAlignment(SwingConstants.RIGHT);
 128                 grid.add(bearingLabel);
 129                 grid.add(_bearingField);
 130
 131                 // Distance including units
 132                 _distanceDescLabel = new JLabel(I18nManager.getText("fieldname.distance") + " (ft)");
 133                 // Note, this label will be reset at each run
 134                 _distanceDescLabel.setHorizontalAlignment(SwingConstants.RIGHT);
 135                 grid.add(_distanceDescLabel);
 136                 grid.add(_distanceField);
 137
 138                 // Waypoint name
 139                 JLabel nameLabel = new JLabel(I18nManager.getText("dialog.pointnameedit.name"));
 140                 nameLabel.setHorizontalAlignment(SwingConstants.RIGHT);
 141                 grid.add(nameLabel);
 142                 _nameField = new JTextField("", 12);
 143                 grid.add(_nameField);
 144                 dialogPanel.add(mainPanel, BorderLayout.CENTER);
 145                 // button panel at bottom
 146                 JPanel buttonPanel = new JPanel();
 147                 buttonPanel.setLayout(new FlowLayout(FlowLayout.RIGHT));
 148                 _okButton = new JButton(I18nManager.getText("button.ok"));
 149                 ActionListener okListener = new ActionListener() {
 150                         public void actionPerformed(ActionEvent e)
 151                         {
 152                                 if (_okButton.isEnabled()) {finish();}
 153                         }
 154                 };
 155                 _okButton.addActionListener(okListener);
 156                 _okButton.setEnabled(false);
 157
 158                 buttonPanel.add(_okButton);
 159                 JButton cancelButton = new JButton(I18nManager.getText("button.cancel"));
 160                 cancelButton.addActionListener(new ActionListener() {
 161                         public void actionPerformed(ActionEvent e)
 162                         {
 163                                 _dialog.dispose();
 164                         }
 165                 });
 166                 buttonPanel.add(cancelButton);
 167                 dialogPanel.add(buttonPanel, BorderLayout.SOUTH);
 168                 dialogPanel.setBorder(BorderFactory.createEmptyBorder(10, 10, 10, 15));
 169                 return dialogPanel;
 170         }
 171
 172         /**
 173          * Set the label text according to the current units
 174          */
 175         private void setLabelText()
 176         {
 177                 Unit distUnit = Config.getUnitSet().getDistanceUnit();
 178                 _distanceIsMetric = (distUnit == UnitSetLibrary.UNITS_METRES || distUnit == UnitSetLibrary.UNITS_KILOMETRES);
 179                 distUnit = _distanceIsMetric ? UnitSetLibrary.UNITS_METRES : UnitSetLibrary.UNITS_FEET;
 180                 final String unitKey = distUnit.getShortnameKey();
 181                 _distanceDescLabel.setText(I18nManager.getText("fieldname.distance") + " (" + I18nManager.getText(unitKey) + ")");
 182         }
 183
 184         /**
 185          * Enable or disable the OK button based on the contents of the input fields
 186          */
 187         private void enableOK()
 188         {
 189                 final boolean bearingOk = !_bearingField.getText().isEmpty()
 190                         && _bearingField.getValue() < 360;
 191                 final boolean distanceOk = _distanceField.getValue() > 0.0;
 192                 _okButton.setEnabled(bearingOk && distanceOk);
 193         }
 194
 195         /**
 196          * Finish the dialog when OK pressed
 197          */
 198         private void finish()
 199         {
 200                 DataPoint currPoint = _app.getTrackInfo().getCurrentPoint();
 201                 Unit distUnit = _distanceIsMetric ? UnitSetLibrary.UNITS_METRES : UnitSetLibrary.UNITS_FEET;
 202                 final double projectRads = Distance.convertDistanceToRadians(_distanceField.getValue(), distUnit);
 203                 final double origLatRads = Math.toRadians(currPoint.getLatitude().getDouble());
 204                 final double origLonRads = Math.toRadians(currPoint.getLongitude().getDouble());
 205                 System.out.println("Project from: " + origLatRads + ", " + origLonRads);
 206                 final double bearingRads = Math.toRadians(_bearingField.getValue());
 207
 208                 double lat2 = Math.asin(Math.sin(origLatRads) * Math.cos(projectRads)
 209                         + Math.cos(origLatRads) * Math.sin(projectRads) * Math.cos(bearingRads));
 210                 double lon2 = origLonRads + Math.atan2(Math.sin(bearingRads) * Math.sin(projectRads) * Math.cos(origLatRads),
 211                         Math.cos(projectRads) - Math.sin(origLatRads) * Math.sin(lat2));
 212
 213                 double finalLatDeg = Math.toDegrees(lat2);
 214                 double finalLonDeg = Math.toDegrees(lon2);
 215                 System.out.println("Result is: lat=" + finalLatDeg + ", lon=" + finalLonDeg);
 216
 217                 // Create point and append to track
 218                 DataPoint point = new DataPoint(new Latitude(finalLatDeg, Coordinate.FORMAT_DEG),
 219                         new Longitude(finalLonDeg, Coordinate.FORMAT_DEG), null);
 220                 point.setFieldValue(Field.WAYPT_NAME, _nameField.getText(), false);
 221                 _app.createPoint(point);
 222
 223                 _dialog.dispose();
 224         }
 225 }