git.gag.com Git - debian/openrocket/blob - src/net/sf/openrocket/gui/scalefigure/RocketPanel.java

   1 package net.sf.openrocket.gui.scalefigure;
   2
   3
   4 import java.awt.Dimension;
   5 import java.awt.Font;
   6 import java.awt.Point;
   7 import java.awt.event.ActionEvent;
   8 import java.awt.event.InputEvent;
   9 import java.awt.event.MouseEvent;
  10 import java.util.ArrayList;
  11 import java.util.Collection;
  12 import java.util.List;
  13 import java.util.concurrent.Executor;
  14 import java.util.concurrent.Executors;
  15 import java.util.concurrent.ThreadFactory;
  16
  17 import javax.swing.AbstractAction;
  18 import javax.swing.Action;
  19 import javax.swing.JComboBox;
  20 import javax.swing.JLabel;
  21 import javax.swing.JPanel;
  22 import javax.swing.JSlider;
  23 import javax.swing.JToggleButton;
  24 import javax.swing.JViewport;
  25 import javax.swing.SwingUtilities;
  26 import javax.swing.event.ChangeEvent;
  27 import javax.swing.event.ChangeListener;
  28 import javax.swing.event.TreeSelectionEvent;
  29 import javax.swing.event.TreeSelectionListener;
  30 import javax.swing.tree.TreePath;
  31 import javax.swing.tree.TreeSelectionModel;
  32
  33 import net.miginfocom.swing.MigLayout;
  34 import net.sf.openrocket.aerodynamics.AerodynamicCalculator;
  35 import net.sf.openrocket.aerodynamics.BarrowmanCalculator;
  36 import net.sf.openrocket.aerodynamics.FlightConditions;
  37 import net.sf.openrocket.aerodynamics.WarningSet;
  38 import net.sf.openrocket.document.OpenRocketDocument;
  39 import net.sf.openrocket.document.Simulation;
  40 import net.sf.openrocket.gui.adaptors.DoubleModel;
  41 import net.sf.openrocket.gui.adaptors.MotorConfigurationModel;
  42 import net.sf.openrocket.gui.components.BasicSlider;
  43 import net.sf.openrocket.gui.components.StageSelector;
  44 import net.sf.openrocket.gui.components.UnitSelector;
  45 import net.sf.openrocket.gui.configdialog.ComponentConfigDialog;
  46 import net.sf.openrocket.gui.figureelements.CGCaret;
  47 import net.sf.openrocket.gui.figureelements.CPCaret;
  48 import net.sf.openrocket.gui.figureelements.Caret;
  49 import net.sf.openrocket.gui.figureelements.RocketInfo;
  50 import net.sf.openrocket.gui.main.SimulationWorker;
  51 import net.sf.openrocket.gui.main.componenttree.ComponentTreeModel;
  52 import net.sf.openrocket.l10n.Translator;
  53 import net.sf.openrocket.masscalc.BasicMassCalculator;
  54 import net.sf.openrocket.masscalc.MassCalculator;
  55 import net.sf.openrocket.masscalc.MassCalculator.MassCalcType;
  56 import net.sf.openrocket.rocketcomponent.Configuration;
  57 import net.sf.openrocket.rocketcomponent.Rocket;
  58 import net.sf.openrocket.rocketcomponent.RocketComponent;
  59 import net.sf.openrocket.rocketcomponent.SymmetricComponent;
  60 import net.sf.openrocket.simulation.FlightData;
  61 import net.sf.openrocket.simulation.listeners.SimulationListener;
  62 import net.sf.openrocket.simulation.listeners.system.ApogeeEndListener;
  63 import net.sf.openrocket.simulation.listeners.system.InterruptListener;
  64 import net.sf.openrocket.startup.Application;
  65 import net.sf.openrocket.unit.UnitGroup;
  66 import net.sf.openrocket.util.ChangeSource;
  67 import net.sf.openrocket.util.Chars;
  68 import net.sf.openrocket.util.Coordinate;
  69 import net.sf.openrocket.util.MathUtil;
  70 import net.sf.openrocket.util.Prefs;
  71
  72 /**
  73  * A JPanel that contains a RocketFigure and buttons to manipulate the figure.
  74  *
  75  * @author Sampo Niskanen <sampo.niskanen@iki.fi>
  76  */
  77 public class RocketPanel extends JPanel implements TreeSelectionListener, ChangeSource {
  78
  79         private static final Translator trans = Application.getTranslator();
  80         private final RocketFigure figure;
  81         private final ScaleScrollPane scrollPane;
  82
  83         private JLabel infoMessage;
  84
  85         private TreeSelectionModel selectionModel = null;
  86
  87
  88         /* Calculation of CP and CG */
  89         private AerodynamicCalculator aerodynamicCalculator;
  90         private MassCalculator massCalculator;
  91
  92
  93         private final OpenRocketDocument document;
  94         private final Configuration configuration;
  95
  96         private Caret extraCP = null;
  97         private Caret extraCG = null;
  98         private RocketInfo extraText = null;
  99
 100
 101         private double cpAOA = Double.NaN;
 102         private double cpTheta = Double.NaN;
 103         private double cpMach = Double.NaN;
 104         private double cpRoll = Double.NaN;
 105
 106         // The functional ID of the rocket that was simulated
 107         private int flightDataFunctionalID = -1;
 108         private String flightDataMotorID = null;
 109
 110
 111         private SimulationWorker backgroundSimulationWorker = null;
 112         private boolean dirty = false;
 113
 114         private List<ChangeListener> listeners = new ArrayList<ChangeListener>();
 115
 116
 117         /**
 118          * The executor service used for running the background simulations.
 119          * This uses a fixed-sized thread pool for all background simulations
 120          * with all threads in daemon mode and with minimum priority.
 121          */
 122         private static final Executor backgroundSimulationExecutor;
 123         static {
 124                 backgroundSimulationExecutor = Executors.newFixedThreadPool(Prefs.getMaxThreadCount(),
 125                                 new ThreadFactory() {
 126                                         private ThreadFactory factory = Executors.defaultThreadFactory();
 127
 128                                         @Override
 129                                         public Thread newThread(Runnable r) {
 130                                                 Thread t = factory.newThread(r);
 131                                                 t.setDaemon(true);
 132                                                 t.setPriority(Thread.MIN_PRIORITY);
 133                                                 return t;
 134                                         }
 135                                 });
 136         }
 137
 138
 139         public RocketPanel(OpenRocketDocument document) {
 140
 141                 this.document = document;
 142                 configuration = document.getDefaultConfiguration();
 143
 144                 // TODO: FUTURE: calculator selection
 145                 aerodynamicCalculator = new BarrowmanCalculator();
 146                 massCalculator = new BasicMassCalculator();
 147
 148                 // Create figure and custom scroll pane
 149                 figure = new RocketFigure(configuration);
 150
 151                 scrollPane = new ScaleScrollPane(figure) {
 152                         @Override
 153                         public void mouseClicked(MouseEvent event) {
 154                                 handleMouseClick(event);
 155                         }
 156                 };
 157                 scrollPane.getViewport().setScrollMode(JViewport.SIMPLE_SCROLL_MODE);
 158                 scrollPane.setFitting(true);
 159
 160                 createPanel();
 161
 162                 configuration.addChangeListener(new ChangeListener() {
 163                         @Override
 164                         public void stateChanged(ChangeEvent e) {
 165                                 System.out.println("Configuration changed, calling updateFigure");
 166                                 updateExtras();
 167                                 figure.updateFigure();
 168                         }
 169                 });
 170         }
 171
 172
 173         /**
 174          * Creates the layout and components of the panel.
 175          */
 176         private void createPanel() {
 177                 setLayout(new MigLayout("", "[shrink][grow]", "[shrink][shrink][grow][shrink]"));
 178
 179                 setPreferredSize(new Dimension(800, 300));
 180
 181
 182                 //// Create toolbar
 183
 184                 // Side/back buttons
 185                 FigureTypeAction action = new FigureTypeAction(RocketFigure.TYPE_SIDE);
 186                 //// Side view
 187                 action.putValue(Action.NAME, trans.get("RocketPanel.FigTypeAct.Sideview"));
 188                 //// Side view
 189                 action.putValue(Action.SHORT_DESCRIPTION, trans.get("RocketPanel.FigTypeAct.ttip.Sideview"));
 190                 JToggleButton toggle = new JToggleButton(action);
 191                 add(toggle, "spanx, split");
 192
 193                 action = new FigureTypeAction(RocketFigure.TYPE_BACK);
 194                 //// Back view
 195                 action.putValue(Action.NAME, trans.get("RocketPanel.FigTypeAct.Backview"));
 196                 //// Back view
 197                 action.putValue(Action.SHORT_DESCRIPTION, trans.get("RocketPanel.FigTypeAct.ttip.Backview"));
 198                 toggle = new JToggleButton(action);
 199                 add(toggle, "gap rel");
 200
 201
 202                 // Zoom level selector
 203                 ScaleSelector scaleSelector = new ScaleSelector(scrollPane);
 204                 add(scaleSelector);
 205
 206
 207
 208                 // Stage selector
 209                 StageSelector stageSelector = new StageSelector(configuration);
 210                 add(stageSelector, "");
 211
 212
 213
 214                 // Motor configuration selector
 215                 //// Motor configuration:
 216                 JLabel label = new JLabel(trans.get("RocketPanel.lbl.Motorcfg"));
 217                 label.setHorizontalAlignment(JLabel.RIGHT);
 218                 add(label, "growx, right");
 219                 add(new JComboBox(new MotorConfigurationModel(configuration)), "wrap");
 220
 221
 222
 223
 224
 225                 // Create slider and scroll pane
 226
 227                 DoubleModel theta = new DoubleModel(figure, "Rotation",
 228                                 UnitGroup.UNITS_ANGLE, 0, 2 * Math.PI);
 229                 UnitSelector us = new UnitSelector(theta, true);
 230                 us.setHorizontalAlignment(JLabel.CENTER);
 231                 add(us, "alignx 50%, growx");
 232
 233                 // Add the rocket figure
 234                 add(scrollPane, "grow, spany 2, wmin 300lp, hmin 100lp, wrap");
 235
 236
 237                 // Add rotation slider
 238                 // Minimum size to fit "360deg"
 239                 JLabel l = new JLabel("360" + Chars.DEGREE);
 240                 Dimension d = l.getPreferredSize();
 241
 242                 add(new BasicSlider(theta.getSliderModel(0, 2 * Math.PI), JSlider.VERTICAL, true),
 243                                 "ax 50%, wrap, width " + (d.width + 6) + "px:null:null, growy");
 244
 245
 246                 //// <html>Click to select &nbsp;&nbsp; Shift+click to select other &nbsp;&nbsp; Double-click to edit &nbsp;&nbsp; Click+drag to move
 247                 infoMessage = new JLabel(trans.get("RocketPanel.lbl.infoMessage"));
 248                 infoMessage.setFont(new Font("Sans Serif", Font.PLAIN, 9));
 249                 add(infoMessage, "skip, span, gapleft 25, wrap");
 250
 251
 252                 addExtras();
 253         }
 254
 255
 256
 257         public RocketFigure getFigure() {
 258                 return figure;
 259         }
 260
 261         public AerodynamicCalculator getAerodynamicCalculator() {
 262                 return aerodynamicCalculator;
 263         }
 264
 265         public Configuration getConfiguration() {
 266                 return configuration;
 267         }
 268
 269         /**
 270          * Get the center of pressure figure element.
 271          *
 272          * @return center of pressure info
 273          */
 274         public Caret getExtraCP() {
 275                 return extraCP;
 276         }
 277
 278         /**
 279          * Get the center of gravity figure element.
 280          *
 281          * @return center of gravity info
 282          */
 283         public Caret getExtraCG() {
 284                 return extraCG;
 285         }
 286
 287         /**
 288          * Get the extra text figure element.
 289          *
 290          * @return extra text that contains info about the rocket design
 291          */
 292         public RocketInfo getExtraText() {
 293                 return extraText;
 294         }
 295
 296         public void setSelectionModel(TreeSelectionModel m) {
 297                 if (selectionModel != null) {
 298                         selectionModel.removeTreeSelectionListener(this);
 299                 }
 300                 selectionModel = m;
 301                 selectionModel.addTreeSelectionListener(this);
 302                 valueChanged((TreeSelectionEvent) null); // updates FigureParameters
 303         }
 304
 305
 306
 307         /**
 308          * Return the angle of attack used in CP calculation.  NaN signifies the default value
 309          * of zero.
 310          * @return   the angle of attack used, or NaN.
 311          */
 312         public double getCPAOA() {
 313                 return cpAOA;
 314         }
 315
 316         /**
 317          * Set the angle of attack to be used in CP calculation.  A value of NaN signifies that
 318          * the default AOA (zero) should be used.
 319          * @param aoa   the angle of attack to use, or NaN
 320          */
 321         public void setCPAOA(double aoa) {
 322                 if (MathUtil.equals(aoa, cpAOA) ||
 323                                 (Double.isNaN(aoa) && Double.isNaN(cpAOA)))
 324                         return;
 325                 cpAOA = aoa;
 326                 updateExtras();
 327                 figure.updateFigure();
 328                 fireChangeEvent();
 329         }
 330
 331         public double getCPTheta() {
 332                 return cpTheta;
 333         }
 334
 335         public void setCPTheta(double theta) {
 336                 if (MathUtil.equals(theta, cpTheta) ||
 337                                 (Double.isNaN(theta) && Double.isNaN(cpTheta)))
 338                         return;
 339                 cpTheta = theta;
 340                 if (!Double.isNaN(theta))
 341                         figure.setRotation(theta);
 342                 updateExtras();
 343                 figure.updateFigure();
 344                 fireChangeEvent();
 345         }
 346
 347         public double getCPMach() {
 348                 return cpMach;
 349         }
 350
 351         public void setCPMach(double mach) {
 352                 if (MathUtil.equals(mach, cpMach) ||
 353                                 (Double.isNaN(mach) && Double.isNaN(cpMach)))
 354                         return;
 355                 cpMach = mach;
 356                 updateExtras();
 357                 figure.updateFigure();
 358                 fireChangeEvent();
 359         }
 360
 361         public double getCPRoll() {
 362                 return cpRoll;
 363         }
 364
 365         public void setCPRoll(double roll) {
 366                 if (MathUtil.equals(roll, cpRoll) ||
 367                                 (Double.isNaN(roll) && Double.isNaN(cpRoll)))
 368                         return;
 369                 cpRoll = roll;
 370                 updateExtras();
 371                 figure.updateFigure();
 372                 fireChangeEvent();
 373         }
 374
 375
 376
 377         @Override
 378         public void addChangeListener(ChangeListener listener) {
 379                 listeners.add(0, listener);
 380         }
 381
 382         @Override
 383         public void removeChangeListener(ChangeListener listener) {
 384                 listeners.remove(listener);
 385         }
 386
 387         protected void fireChangeEvent() {
 388                 ChangeEvent e = new ChangeEvent(this);
 389                 ChangeListener[] list = listeners.toArray(new ChangeListener[0]);
 390                 for (ChangeListener l : list) {
 391                         l.stateChanged(e);
 392                 }
 393         }
 394
 395
 396
 397
 398         /**
 399          * Handle clicking on figure shapes.  The functioning is the following:
 400          *
 401          * Get the components clicked.
 402          * If no component is clicked, do nothing.
 403          * If the currently selected component is in the set, keep it,
 404          * unless the selector specified is pressed.  If it is pressed, cycle to
 405          * the next component. Otherwise select the first component in the list.
 406          */
 407         public static final int CYCLE_SELECTION_MODIFIER = InputEvent.SHIFT_DOWN_MASK;
 408
 409         private void handleMouseClick(MouseEvent event) {
 410                 if (event.getButton() != MouseEvent.BUTTON1)
 411                         return;
 412                 Point p0 = event.getPoint();
 413                 Point p1 = scrollPane.getViewport().getViewPosition();
 414                 int x = p0.x + p1.x;
 415                 int y = p0.y + p1.y;
 416
 417                 RocketComponent[] clicked = figure.getComponentsByPoint(x, y);
 418
 419                 // If no component is clicked, do nothing
 420                 if (clicked.length == 0)
 421                         return;
 422
 423                 // Check whether the currently selected component is in the clicked components.
 424                 TreePath path = selectionModel.getSelectionPath();
 425                 if (path != null) {
 426                         RocketComponent current = (RocketComponent) path.getLastPathComponent();
 427                         path = null;
 428                         for (int i = 0; i < clicked.length; i++) {
 429                                 if (clicked[i] == current) {
 430                                         if (event.isShiftDown() && (event.getClickCount() == 1)) {
 431                                                 path = ComponentTreeModel.makeTreePath(clicked[(i + 1) % clicked.length]);
 432                                         } else {
 433                                                 path = ComponentTreeModel.makeTreePath(clicked[i]);
 434                                         }
 435                                         break;
 436                                 }
 437                         }
 438                 }
 439
 440                 // Currently selected component not clicked
 441                 if (path == null) {
 442                         if (event.isShiftDown() && event.getClickCount() == 1 && clicked.length > 1) {
 443                                 path = ComponentTreeModel.makeTreePath(clicked[1]);
 444                         } else {
 445                                 path = ComponentTreeModel.makeTreePath(clicked[0]);
 446                         }
 447                 }
 448
 449                 // Set selection and check for double-click
 450                 selectionModel.setSelectionPath(path);
 451                 if (event.getClickCount() == 2) {
 452                         RocketComponent component = (RocketComponent) path.getLastPathComponent();
 453
 454                         ComponentConfigDialog.showDialog(SwingUtilities.getWindowAncestor(this),
 455                                         document, component);
 456                 }
 457         }
 458
 459
 460
 461
 462         /**
 463          * Updates the extra data included in the figure.  Currently this includes
 464          * the CP and CG carets.
 465          */
 466         private WarningSet warnings = new WarningSet();
 467
 468         private void updateExtras() {
 469                 Coordinate cp, cg;
 470                 double cpx, cgx;
 471
 472                 // TODO: MEDIUM: User-definable conditions
 473                 FlightConditions conditions = new FlightConditions(configuration);
 474                 warnings.clear();
 475
 476                 if (!Double.isNaN(cpMach)) {
 477                         conditions.setMach(cpMach);
 478                         extraText.setMach(cpMach);
 479                 } else {
 480                         conditions.setMach(Prefs.getDefaultMach());
 481                         extraText.setMach(Prefs.getDefaultMach());
 482                 }
 483
 484                 if (!Double.isNaN(cpAOA)) {
 485                         conditions.setAOA(cpAOA);
 486                 } else {
 487                         conditions.setAOA(0);
 488                 }
 489                 extraText.setAOA(cpAOA);
 490
 491                 if (!Double.isNaN(cpRoll)) {
 492                         conditions.setRollRate(cpRoll);
 493                 } else {
 494                         conditions.setRollRate(0);
 495                 }
 496
 497                 if (!Double.isNaN(cpTheta)) {
 498                         conditions.setTheta(cpTheta);
 499                         cp = aerodynamicCalculator.getCP(configuration, conditions, warnings);
 500                 } else {
 501                         cp = aerodynamicCalculator.getWorstCP(configuration, conditions, warnings);
 502                 }
 503                 extraText.setTheta(cpTheta);
 504
 505
 506                 cg = massCalculator.getCG(configuration, MassCalcType.LAUNCH_MASS);
 507                 //              System.out.println("CG computed as "+cg+ " CP as "+cp);
 508
 509                 if (cp.weight > 0.000001)
 510                         cpx = cp.x;
 511                 else
 512                         cpx = Double.NaN;
 513
 514                 if (cg.weight > 0.000001)
 515                         cgx = cg.x;
 516                 else
 517                         cgx = Double.NaN;
 518
 519                 // Length bound is assumed to be tight
 520                 double length = 0, diameter = 0;
 521                 Collection<Coordinate> bounds = configuration.getBounds();
 522                 if (!bounds.isEmpty()) {
 523                         double minX = Double.POSITIVE_INFINITY, maxX = Double.NEGATIVE_INFINITY;
 524                         for (Coordinate c : bounds) {
 525                                 if (c.x < minX)
 526                                         minX = c.x;
 527                                 if (c.x > maxX)
 528                                         maxX = c.x;
 529                         }
 530                         length = maxX - minX;
 531                 }
 532
 533                 for (RocketComponent c : configuration) {
 534                         if (c instanceof SymmetricComponent) {
 535                                 double d1 = ((SymmetricComponent) c).getForeRadius() * 2;
 536                                 double d2 = ((SymmetricComponent) c).getAftRadius() * 2;
 537                                 diameter = MathUtil.max(diameter, d1, d2);
 538                         }
 539                 }
 540
 541                 extraText.setCG(cgx);
 542                 extraText.setCP(cpx);
 543                 extraText.setLength(length);
 544                 extraText.setDiameter(diameter);
 545                 extraText.setMass(cg.weight);
 546                 extraText.setWarnings(warnings);
 547
 548
 549                 if (figure.getType() == RocketFigure.TYPE_SIDE && length > 0) {
 550
 551                         // TODO: LOW: Y-coordinate and rotation
 552                         extraCP.setPosition(cpx * RocketFigure.EXTRA_SCALE, 0);
 553                         extraCG.setPosition(cgx * RocketFigure.EXTRA_SCALE, 0);
 554
 555                 } else {
 556
 557                         extraCP.setPosition(Double.NaN, Double.NaN);
 558                         extraCG.setPosition(Double.NaN, Double.NaN);
 559
 560                 }
 561
 562
 563                 ////////  Flight simulation in background
 564
 565                 // Check whether to compute or not
 566                 if (!Prefs.computeFlightInBackground()) {
 567                         extraText.setFlightData(null);
 568                         extraText.setCalculatingData(false);
 569                         stopBackgroundSimulation();
 570                         return;
 571                 }
 572
 573                 // Check whether data is already up to date
 574                 if (flightDataFunctionalID == configuration.getRocket().getFunctionalModID() &&
 575                                 flightDataMotorID == configuration.getMotorConfigurationID()) {
 576                         return;
 577                 }
 578
 579                 flightDataFunctionalID = configuration.getRocket().getFunctionalModID();
 580                 flightDataMotorID = configuration.getMotorConfigurationID();
 581
 582                 // Stop previous computation (if any)
 583                 stopBackgroundSimulation();
 584
 585                 // Check that configuration has motors
 586                 if (!configuration.hasMotors()) {
 587                         extraText.setFlightData(FlightData.NaN_DATA);
 588                         extraText.setCalculatingData(false);
 589                         return;
 590                 }
 591
 592                 // Start calculation process
 593                 extraText.setCalculatingData(true);
 594
 595                 Rocket duplicate = (Rocket) configuration.getRocket().copy();
 596                 Simulation simulation = Prefs.getBackgroundSimulation(duplicate);
 597                 simulation.getOptions().setMotorConfigurationID(
 598                                 configuration.getMotorConfigurationID());
 599
 600                 backgroundSimulationWorker = new BackgroundSimulationWorker(simulation);
 601                 backgroundSimulationExecutor.execute(backgroundSimulationWorker);
 602         }
 603
 604         /**
 605          * Cancels the current background simulation worker, if any.
 606          */
 607         private void stopBackgroundSimulation() {
 608                 if (backgroundSimulationWorker != null) {
 609                         backgroundSimulationWorker.cancel(true);
 610                         backgroundSimulationWorker = null;
 611                 }
 612         }
 613
 614
 615         /**
 616          * A SimulationWorker that simulates the rocket flight in the background and
 617          * sets the results to the extra text when finished.  The worker can be cancelled
 618          * if necessary.
 619          */
 620         private class BackgroundSimulationWorker extends SimulationWorker {
 621
 622                 public BackgroundSimulationWorker(Simulation sim) {
 623                         super(sim);
 624                 }
 625
 626                 @Override
 627                 protected FlightData doInBackground() {
 628
 629                         // Pause a little while to allow faster UI reaction
 630                         try {
 631                                 Thread.sleep(300);
 632                         } catch (InterruptedException ignore) {
 633                         }
 634                         if (isCancelled() || backgroundSimulationWorker != this)
 635                                 return null;
 636
 637                         return super.doInBackground();
 638                 }
 639
 640                 @Override
 641                 protected void simulationDone() {
 642                         // Do nothing if cancelled
 643                         if (isCancelled() || backgroundSimulationWorker != this)
 644                                 return;
 645
 646                         backgroundSimulationWorker = null;
 647                         extraText.setFlightData(simulation.getSimulatedData());
 648                         extraText.setCalculatingData(false);
 649                         figure.repaint();
 650                 }
 651
 652                 @Override
 653                 protected SimulationListener[] getExtraListeners() {
 654                         return new SimulationListener[] {
 655                                         InterruptListener.INSTANCE,
 656                                         ApogeeEndListener.INSTANCE };
 657                 }
 658
 659                 @Override
 660                 protected void simulationInterrupted(Throwable t) {
 661                         // Do nothing on cancel, set N/A data otherwise
 662                         if (isCancelled() || backgroundSimulationWorker != this) // Double-check
 663                                 return;
 664
 665                         backgroundSimulationWorker = null;
 666                         extraText.setFlightData(FlightData.NaN_DATA);
 667                         extraText.setCalculatingData(false);
 668                         figure.repaint();
 669                 }
 670         }
 671
 672
 673
 674         /**
 675          * Adds the extra data to the figure.  Currently this includes the CP and CG carets.
 676          */
 677         private void addExtras() {
 678                 figure.clearRelativeExtra();
 679                 extraCG = new CGCaret(0, 0);
 680                 extraCP = new CPCaret(0, 0);
 681                 extraText = new RocketInfo(configuration);
 682                 updateExtras();
 683                 figure.addRelativeExtra(extraCP);
 684                 figure.addRelativeExtra(extraCG);
 685                 figure.addAbsoluteExtra(extraText);
 686         }
 687
 688
 689         /**
 690          * Updates the selection in the FigureParameters and repaints the figure.
 691          * Ignores the event itself.
 692          */
 693         @Override
 694         public void valueChanged(TreeSelectionEvent e) {
 695                 TreePath[] paths = selectionModel.getSelectionPaths();
 696                 if (paths == null) {
 697                         figure.setSelection(null);
 698                         return;
 699                 }
 700
 701                 RocketComponent[] components = new RocketComponent[paths.length];
 702                 for (int i = 0; i < paths.length; i++)
 703                         components[i] = (RocketComponent) paths[i].getLastPathComponent();
 704                 figure.setSelection(components);
 705         }
 706
 707
 708
 709         /**
 710          * An <code>Action</code> that shows whether the figure type is the type
 711          * given in the constructor.
 712          *
 713          * @author Sampo Niskanen <sampo.niskanen@iki.fi>
 714          */
 715         private class FigureTypeAction extends AbstractAction implements ChangeListener {
 716                 private final int type;
 717
 718                 public FigureTypeAction(int type) {
 719                         this.type = type;
 720                         stateChanged(null);
 721                         figure.addChangeListener(this);
 722                 }
 723
 724                 @Override
 725                 public void actionPerformed(ActionEvent e) {
 726                         boolean state = (Boolean) getValue(Action.SELECTED_KEY);
 727                         if (state == true) {
 728                                 // This view has been selected
 729                                 figure.setType(type);
 730                                 updateExtras();
 731                         }
 732                         stateChanged(null);
 733                 }
 734
 735                 @Override
 736                 public void stateChanged(ChangeEvent e) {
 737                         putValue(Action.SELECTED_KEY, figure.getType() == type);
 738                 }
 739         }
 740
 741 }