tim/prune/save/PovExporter.java

   1 package tim.prune.save;
   2
   3 import java.awt.BorderLayout;
   4 import java.awt.Component;
   5 import java.awt.FlowLayout;
   6 import java.awt.GridLayout;
   7 import java.awt.event.ActionEvent;
   8 import java.awt.event.ActionListener;
   9 import java.io.File;
  10 import java.io.FileWriter;
  11 import java.io.IOException;
  12 import java.util.ArrayList;
  13 import java.util.Iterator;
  14
  15 import javax.swing.BorderFactory;
  16 import javax.swing.BoxLayout;
  17 import javax.swing.ButtonGroup;
  18 import javax.swing.JButton;
  19 import javax.swing.JDialog;
  20 import javax.swing.JFileChooser;
  21 import javax.swing.JLabel;
  22 import javax.swing.JOptionPane;
  23 import javax.swing.JPanel;
  24 import javax.swing.JRadioButton;
  25 import javax.swing.JTextField;
  26 import javax.swing.SwingConstants;
  27
  28 import tim.prune.App;
  29 import tim.prune.I18nManager;
  30 import tim.prune.UpdateMessageBroker;
  31 import tim.prune.config.Config;
  32 import tim.prune.data.NumberUtils;
  33 import tim.prune.data.Track;
  34 import tim.prune.function.Export3dFunction;
  35 import tim.prune.gui.DialogCloser;
  36 import tim.prune.load.GenericFileFilter;
  37 import tim.prune.threedee.LineDialog;
  38 import tim.prune.threedee.ThreeDModel;
  39
  40 /**
  41  * Class to export a 3d scene of the track to a specified Pov file
  42  */
  43 public class PovExporter extends Export3dFunction
  44 {
  45         private Track _track = null;
  46         private JDialog _dialog = null;
  47         private JFileChooser _fileChooser = null;
  48         private String _cameraX = null, _cameraY = null, _cameraZ = null;
  49         private JTextField _cameraXField = null, _cameraYField = null, _cameraZField = null;
  50         private JTextField _fontName = null, _altitudeFactorField = null;
  51         private JRadioButton _ballsAndSticksButton = null;
  52
  53         // defaults
  54         private static final double DEFAULT_CAMERA_DISTANCE = 30.0;
  55         private static final String DEFAULT_FONT_FILE = "crystal.ttf";
  56
  57
  58         /**
  59          * Constructor
  60          * @param inApp App object
  61          */
  62         public PovExporter(App inApp)
  63         {
  64                 super(inApp);
  65                 _track = inApp.getTrackInfo().getTrack();
  66                 // Set default camera coordinates
  67                 _cameraX = "17"; _cameraY = "13"; _cameraZ = "-20";
  68         }
  69
  70         /** Get the name key */
  71         public String getNameKey() {
  72                 return "function.exportpov";
  73         }
  74
  75         /**
  76          * Set the coordinates for the camera (can be any scale)
  77          * @param inX X coordinate of camera
  78          * @param inY Y coordinate of camera
  79          * @param inZ Z coordinate of camera
  80          */
  81         public void setCameraCoordinates(double inX, double inY, double inZ)
  82         {
  83                 // calculate distance from origin
  84                 double cameraDist = Math.sqrt(inX*inX + inY*inY + inZ*inZ);
  85                 if (cameraDist > 0.0)
  86                 {
  87                         _cameraX = NumberUtils.formatNumber(inX / cameraDist * DEFAULT_CAMERA_DISTANCE, 5);
  88                         _cameraY = NumberUtils.formatNumber(inY / cameraDist * DEFAULT_CAMERA_DISTANCE, 5);
  89                         // Careful! Need to convert from java3d (right-handed) to povray (left-handed) coordinate system!
  90                         _cameraZ = NumberUtils.formatNumber(-inZ / cameraDist * DEFAULT_CAMERA_DISTANCE, 5);
  91                 }
  92         }
  93
  94
  95         /**
  96          * Show the dialog to select options and export file
  97          */
  98         public void begin()
  99         {
 100                 // Make dialog window to select angles, colours etc
 101                 if (_dialog == null)
 102                 {
 103                         _dialog = new JDialog(_parentFrame, I18nManager.getText(getNameKey()), true);
 104                         _dialog.setLocationRelativeTo(_parentFrame);
 105                         _dialog.getContentPane().add(makeDialogComponents());
 106                 }
 107
 108                 // Set angles
 109                 _cameraXField.setText(_cameraX);
 110                 _cameraYField.setText(_cameraY);
 111                 _cameraZField.setText(_cameraZ);
 112                 _altitudeFactorField.setText("" + _altFactor);
 113                 // Show dialog
 114                 _dialog.pack();
 115                 _dialog.setVisible(true);
 116         }
 117
 118
 119         /**
 120          * Make the dialog components to select the export options
 121          * @return Component holding gui elements
 122          */
 123         private Component makeDialogComponents()
 124         {
 125                 JPanel panel = new JPanel();
 126                 panel.setLayout(new BorderLayout());
 127                 JLabel introLabel = new JLabel(I18nManager.getText("dialog.exportpov.text"));
 128                 introLabel.setBorder(BorderFactory.createEmptyBorder(4, 4, 6, 4));
 129                 panel.add(introLabel, BorderLayout.NORTH);
 130                 // OK, Cancel buttons
 131                 JPanel buttonPanel = new JPanel();
 132                 buttonPanel.setLayout(new FlowLayout(FlowLayout.RIGHT));
 133                 JButton okButton = new JButton(I18nManager.getText("button.ok"));
 134                 okButton.addActionListener(new ActionListener() {
 135                         public void actionPerformed(ActionEvent e)
 136                         {
 137                                 doExport();
 138                                 _dialog.dispose();
 139                         }
 140                 });
 141                 buttonPanel.add(okButton);
 142                 JButton cancelButton = new JButton(I18nManager.getText("button.cancel"));
 143                 cancelButton.addActionListener(new ActionListener() {
 144                         public void actionPerformed(ActionEvent e)
 145                         {
 146                                 _dialog.dispose();
 147                         }
 148                 });
 149                 buttonPanel.add(cancelButton);
 150                 panel.add(buttonPanel, BorderLayout.SOUTH);
 151
 152                 // central panel
 153                 JPanel centralPanel = new JPanel();
 154                 centralPanel.setLayout(new GridLayout(0, 2, 10, 4));
 155
 156                 JLabel fontLabel = new JLabel(I18nManager.getText("dialog.exportpov.font"));
 157                 fontLabel.setHorizontalAlignment(SwingConstants.TRAILING);
 158                 centralPanel.add(fontLabel);
 159                 String defaultFont = Config.getConfigString(Config.KEY_POVRAY_FONT);
 160                 if (defaultFont == null || defaultFont.equals("")) {
 161                         defaultFont = DEFAULT_FONT_FILE;
 162                 }
 163                 _fontName = new JTextField(defaultFont, 12);
 164                 _fontName.setAlignmentX(Component.LEFT_ALIGNMENT);
 165                 _fontName.addKeyListener(new DialogCloser(_dialog));
 166                 centralPanel.add(_fontName);
 167                 //coordinates of camera
 168                 JLabel cameraXLabel = new JLabel(I18nManager.getText("dialog.exportpov.camerax"));
 169                 cameraXLabel.setHorizontalAlignment(SwingConstants.TRAILING);
 170                 centralPanel.add(cameraXLabel);
 171                 _cameraXField = new JTextField("" + _cameraX);
 172                 centralPanel.add(_cameraXField);
 173                 JLabel cameraYLabel = new JLabel(I18nManager.getText("dialog.exportpov.cameray"));
 174                 cameraYLabel.setHorizontalAlignment(SwingConstants.TRAILING);
 175                 centralPanel.add(cameraYLabel);
 176                 _cameraYField = new JTextField("" + _cameraY);
 177                 centralPanel.add(_cameraYField);
 178                 JLabel cameraZLabel = new JLabel(I18nManager.getText("dialog.exportpov.cameraz"));
 179                 cameraZLabel.setHorizontalAlignment(SwingConstants.TRAILING);
 180                 centralPanel.add(cameraZLabel);
 181                 _cameraZField = new JTextField("" + _cameraZ);
 182                 centralPanel.add(_cameraZField);
 183                 // Altitude exaggeration
 184                 JLabel altitudeCapLabel = new JLabel(I18nManager.getText("dialog.3d.altitudefactor"));
 185                 altitudeCapLabel.setHorizontalAlignment(SwingConstants.TRAILING);
 186                 centralPanel.add(altitudeCapLabel);
 187                 _altitudeFactorField = new JTextField("1.0");
 188                 centralPanel.add(_altitudeFactorField);
 189
 190                 // Radio buttons for style - balls on sticks or tubes
 191                 JPanel stylePanel = new JPanel();
 192                 stylePanel.setLayout(new GridLayout(0, 2, 10, 4));
 193                 JLabel styleLabel = new JLabel(I18nManager.getText("dialog.exportpov.modelstyle"));
 194                 styleLabel.setHorizontalAlignment(SwingConstants.TRAILING);
 195                 stylePanel.add(styleLabel);
 196                 JPanel radioPanel = new JPanel();
 197                 radioPanel.setLayout(new BoxLayout(radioPanel, BoxLayout.Y_AXIS));
 198                 _ballsAndSticksButton = new JRadioButton(I18nManager.getText("dialog.exportpov.ballsandsticks"));
 199                 _ballsAndSticksButton.setSelected(false);
 200                 radioPanel.add(_ballsAndSticksButton);
 201                 JRadioButton tubesButton = new JRadioButton(I18nManager.getText("dialog.exportpov.tubesandwalls"));
 202                 tubesButton.setSelected(true);
 203                 radioPanel.add(tubesButton);
 204                 ButtonGroup group = new ButtonGroup();
 205                 group.add(_ballsAndSticksButton); group.add(tubesButton);
 206                 stylePanel.add(radioPanel);
 207
 208                 // add this grid to the holder panel
 209                 JPanel holderPanel = new JPanel();
 210                 holderPanel.setLayout(new BorderLayout(5, 5));
 211                 JPanel boxPanel = new JPanel();
 212                 boxPanel.setLayout(new BoxLayout(boxPanel, BoxLayout.Y_AXIS));
 213                 boxPanel.add(centralPanel);
 214                 boxPanel.add(stylePanel);
 215                 holderPanel.add(boxPanel, BorderLayout.CENTER);
 216
 217                 // show lines button
 218                 JButton showLinesButton = new JButton(I18nManager.getText("button.showlines"));
 219                 showLinesButton.addActionListener(new ActionListener() {
 220                         public void actionPerformed(ActionEvent e)
 221                         {
 222                                 // Need to scale model to find lines
 223                                 ThreeDModel model = new ThreeDModel(_track);
 224                                 model.scale();
 225                                 double[] latLines = model.getLatitudeLines();
 226                                 double[] lonLines = model.getLongitudeLines();
 227                                 LineDialog dialog = new LineDialog(_parentFrame, latLines, lonLines);
 228                                 dialog.showDialog();
 229                         }
 230                 });
 231                 JPanel flowPanel = new JPanel();
 232                 flowPanel.setLayout(new FlowLayout());
 233                 flowPanel.add(showLinesButton);
 234                 holderPanel.add(flowPanel, BorderLayout.EAST);
 235                 panel.add(holderPanel, BorderLayout.CENTER);
 236                 return panel;
 237         }
 238
 239
 240         /**
 241          * Select the file and export data to it
 242          */
 243         private void doExport()
 244         {
 245                 // Copy camera coordinates
 246                 _cameraX = checkCoordinate(_cameraXField.getText());
 247                 _cameraY = checkCoordinate(_cameraYField.getText());
 248                 _cameraZ = checkCoordinate(_cameraZField.getText());
 249
 250                 // OK pressed, so choose output file
 251                 if (_fileChooser == null)
 252                 {
 253                         _fileChooser = new JFileChooser();
 254                         _fileChooser.setDialogType(JFileChooser.SAVE_DIALOG);
 255                         _fileChooser.setFileFilter(new GenericFileFilter("filetype.pov", new String[] {"pov"}));
 256                         _fileChooser.setAcceptAllFileFilterUsed(false);
 257                         // start from directory in config which should be set
 258                         final String configDir = Config.getConfigString(Config.KEY_TRACK_DIR);
 259                         if (configDir != null) {_fileChooser.setCurrentDirectory(new File(configDir));}
 260                 }
 261
 262                 // Allow choose again if an existing file is selected
 263                 boolean chooseAgain = false;
 264                 do
 265                 {
 266                         chooseAgain = false;
 267                         if (_fileChooser.showSaveDialog(_parentFrame) == JFileChooser.APPROVE_OPTION)
 268                         {
 269                                 // OK pressed and file chosen
 270                                 File file = _fileChooser.getSelectedFile();
 271                                 if (!file.getName().toLowerCase().endsWith(".pov"))
 272                                 {
 273                                         file = new File(file.getAbsolutePath() + ".pov");
 274                                 }
 275                                 // Check if file exists and if necessary prompt for overwrite
 276                                 Object[] buttonTexts = {I18nManager.getText("button.overwrite"), I18nManager.getText("button.cancel")};
 277                                 if (!file.exists() || JOptionPane.showOptionDialog(_parentFrame,
 278                                                 I18nManager.getText("dialog.save.overwrite.text"),
 279                                                 I18nManager.getText("dialog.save.overwrite.title"), JOptionPane.YES_NO_OPTION,
 280                                                 JOptionPane.WARNING_MESSAGE, null, buttonTexts, buttonTexts[1])
 281                                         == JOptionPane.YES_OPTION)
 282                                 {
 283                                         // Export the file
 284                                         if (exportFile(file))
 285                                         {
 286                                                 // file saved
 287                                                 // Store directory in config for later
 288                                                 Config.setConfigString(Config.KEY_TRACK_DIR, file.getParentFile().getAbsolutePath());
 289                                         }
 290                                         else
 291                                         {
 292                                                 // export failed so need to choose again
 293                                                 chooseAgain = true;
 294                                         }
 295                                 }
 296                                 else
 297                                 {
 298                                         // overwrite cancelled so need to choose again
 299                                         chooseAgain = true;
 300                                 }
 301                         }
 302                 } while (chooseAgain);
 303         }
 304
 305
 306         /**
 307          * Export the track data to the specified file
 308          * @param inFile File object to save to
 309          * @return true if successful
 310          */
 311         private boolean exportFile(File inFile)
 312         {
 313                 FileWriter writer = null;
 314                 // find out the line separator for this system
 315                 final String lineSeparator = System.getProperty("line.separator");
 316                 try
 317                 {
 318                         // create and scale model
 319                         ThreeDModel model = new ThreeDModel(_track);
 320                         try
 321                         {
 322                                 // try to use given altitude cap
 323                                 double altFactor = Double.parseDouble(_altitudeFactorField.getText());
 324                                 model.setAltitudeFactor(altFactor);
 325                         }
 326                         catch (NumberFormatException nfe) { // parse failed, reset
 327                                 _altitudeFactorField.setText("1.0");
 328                         }
 329                         model.scale();
 330
 331                         // Create file and write basics
 332                         writer = new FileWriter(inFile);
 333                         writeStartOfFile(writer, model.getModelSize(), lineSeparator);
 334
 335                         // write out lat/long lines using model
 336                         writeLatLongLines(writer, model, lineSeparator);
 337
 338                         // write out points
 339                         if (_ballsAndSticksButton.isSelected()) {
 340                                 writeDataPointsBallsAndSticks(writer, model, lineSeparator);
 341                         }
 342                         else {
 343                                 writeDataPointsTubesAndWalls(writer, model, lineSeparator);
 344                         }
 345
 346                         // everything worked
 347                         UpdateMessageBroker.informSubscribers(I18nManager.getText("confirm.save.ok1")
 348                                  + " " + _track.getNumPoints() + " " + I18nManager.getText("confirm.save.ok2")
 349                                  + " " + inFile.getAbsolutePath());
 350                         return true;
 351                 }
 352                 catch (IOException ioe)
 353                 {
 354                         JOptionPane.showMessageDialog(_parentFrame, I18nManager.getText("error.save.failed") + " : " + ioe.getMessage(),
 355                                 I18nManager.getText("error.save.dialogtitle"), JOptionPane.ERROR_MESSAGE);
 356                 }
 357                 finally
 358                 {
 359                         // close file ignoring exceptions
 360                         try
 361                         {
 362                                 writer.close();
 363                         }
 364                         catch (Exception e) {}
 365                 }
 366                 return false;
 367         }
 368
 369
 370         /**
 371          * Write the start of the Pov file, including base plane and lights
 372          * @param inWriter Writer to use for writing file
 373          * @param inModelSize model size
 374          * @param inLineSeparator line separator to use
 375          * @throws IOException on file writing error
 376          */
 377         private void writeStartOfFile(FileWriter inWriter, double inModelSize, String inLineSeparator)
 378         throws IOException
 379         {
 380                 inWriter.write("// Pov file produced by GpsPrune - see http://activityworkshop.net/");
 381                 inWriter.write(inLineSeparator);
 382                 inWriter.write(inLineSeparator);
 383                 // Select font based on user input
 384                 String fontPath = _fontName.getText();
 385                 if (fontPath == null || fontPath.equals(""))
 386                 {
 387                         fontPath = DEFAULT_FONT_FILE;
 388                 }
 389                 else {
 390                         Config.setConfigString(Config.KEY_POVRAY_FONT, fontPath);
 391                 }
 392                 // Set up output
 393                 String[] outputLines = {
 394                   "global_settings { ambient_light rgb <4, 4, 4> }", "",
 395                   "// Background and camera",
 396                   "background { color rgb <0, 0, 0> }",
 397                   // camera position
 398                   "camera {",
 399                   "  location <" + _cameraX + ", " + _cameraY + ", " + _cameraZ + ">",
 400                   "  look_at  <0, 0, 0>",
 401                   "}", "",
 402                 // global declares
 403                   "// Global declares",
 404                   "#declare lat_line =",
 405                   "  cylinder {",
 406                   "   <-" + inModelSize + ", 0.1, 0>,",
 407                   "   <" + inModelSize + ", 0.1, 0>,",
 408                   "   0.1            // Radius",
 409                   "   pigment { color rgb <0.5 0.5 0.5> }",
 410                   "  }",
 411                   "#declare lon_line =",
 412                   "  cylinder {",
 413                   "   <0, 0.1, -" + inModelSize + ">,",
 414                   "   <0, 0.1, " + inModelSize + ">,",
 415                   "   0.1            // Radius",
 416                   "   pigment { color rgb <0.5 0.5 0.5> }",
 417                   "  }",
 418                   "#declare point_rod =",
 419                   "  cylinder {",
 420                   "   <0, 0, 0>,",
 421                   "   <0, 1, 0>,",
 422                   "   0.15",
 423                   "   open",
 424                   "   pigment { color rgb <0.5 0.5 0.5> }",
 425                   "  }", "",
 426                   // MAYBE: Export rods to POV?  How to store in data?
 427                   "#declare waypoint_sphere =",
 428                   "  sphere {",
 429                   "   <0, 0, 0>, 0.4",
 430                   "    texture {",
 431                   "       pigment {color rgb <0.1 0.1 1.0>}",
 432                   "       finish { phong 1 }",
 433                   "    }",
 434                   "  }",
 435                   "#declare track_sphere0 =",
 436                   "  sphere {",
 437                   "   <0, 0, 0>, 0.3", // size should depend on model size
 438                   "   texture {",
 439                   "      pigment {color rgb <0.1 0.6 0.1>}", // dark green
 440                   "      finish { phong 1 }",
 441                   "   }",
 442                   " }",
 443                   "#declare track_sphere1 =",
 444                   "  sphere {",
 445                   "   <0, 0, 0>, 0.3", // size should depend on model size
 446                   "   texture {",
 447                   "      pigment {color rgb <0.4 0.9 0.2>}", // green
 448                   "      finish { phong 1 }",
 449                   "   }",
 450                   " }",
 451                   "#declare track_sphere2 =",
 452                   "  sphere {",
 453                   "   <0, 0, 0>, 0.3", // size should depend on model size
 454                   "   texture {",
 455                   "      pigment {color rgb <0.7 0.8 0.2>}", // yellow
 456                   "      finish { phong 1 }",
 457                   "   }",
 458                   " }",
 459                   "#declare track_sphere3 =",
 460                   "  sphere {",
 461                   "   <0, 0, 0>, 0.3", // size should depend on model size
 462                   "   texture {",
 463                   "      pigment {color rgb <0.5 0.8 0.6>}", // greeny
 464                   "      finish { phong 1 }",
 465                   "   }",
 466                   " }",
 467                   "#declare track_sphere4 =",
 468                   "  sphere {",
 469                   "   <0, 0, 0>, 0.3", // size should depend on model size
 470                   "   texture {",
 471                   "      pigment {color rgb <0.2 0.9 0.9>}", // cyan
 472                   "      finish { phong 1 }",
 473                   "   }",
 474                   " }",
 475                   "#declare track_sphere5 =",
 476                   "  sphere {",
 477                   "   <0, 0, 0>, 0.3", // size should depend on model size
 478                   "   texture {",
 479                   "      pigment {color rgb <1.0 1.0 1.0>}", // white
 480                   "      finish { phong 1 }",
 481                   "   }",
 482                   " }",
 483                   "#declare track_sphere_t =",
 484                   "  sphere {",
 485                   "   <0, 0, 0>, 0.25", // size should depend on model size
 486                   "   texture {",
 487                   "      pigment {color rgb <0.6 1.0 0.2>}",
 488                   "      finish { phong 1 }",
 489                   "   } no_shadow",
 490                   " }",
 491                   "#declare wall_colour = rgbt <0.5, 0.5, 0.5, 0.3>;", "",
 492                   "// Base plane",
 493                   "box {",
 494                   "   <-" + inModelSize + ", -0.15, -" + inModelSize + ">,  // Near lower left corner",
 495                   "   <" + inModelSize + ", 0.15, " + inModelSize + ">   // Far upper right corner",
 496                   "   pigment { color rgb <0.5 0.75 0.8> }",
 497                   "}", "",
 498                 // write cardinals
 499                   "// Cardinal letters N,S,E,W",
 500                   "text {",
 501                   "  ttf \"" + fontPath + "\" \"" + I18nManager.getText("cardinal.n") + "\" 0.3, 0",
 502                   "  pigment { color rgb <1 1 1> }",
 503                   "  translate <0, 0.2, " + inModelSize + ">",
 504                   "}",
 505                   "text {",
 506                   "  ttf \"" + fontPath + "\" \"" + I18nManager.getText("cardinal.s") + "\" 0.3, 0",
 507                   "  pigment { color rgb <1 1 1> }",
 508                   "  translate <0, 0.2, -" + inModelSize + ">",
 509                   "}",
 510                   "text {",
 511                   "  ttf \"" + fontPath + "\" \"" + I18nManager.getText("cardinal.e") + "\" 0.3, 0",
 512                   "  pigment { color rgb <1 1 1> }",
 513                   "  translate <" + (inModelSize * 0.97) + ", 0.2, 0>",
 514                   "}",
 515                   "text {",
 516                   "  ttf \"" + fontPath + "\" \"" + I18nManager.getText("cardinal.w") + "\" 0.3, 0",
 517                   "  pigment { color rgb <1 1 1> }",
 518                   "  translate <-" + (inModelSize * 1.03) + ", 0.2, 0>",
 519                   "}", "",
 520                   // MAYBE: Light positions should relate to model size
 521                   "// lights",
 522                   "light_source { <-1, 9, -4> color rgb <0.5 0.5 0.5>}",
 523                   "light_source { <1, 6, -14> color rgb <0.6 0.6 0.6>}",
 524                   "light_source { <11, 12, 8> color rgb <0.3 0.3 0.3>}",
 525                   "",
 526                 };
 527                 // write strings to file
 528                 int numLines = outputLines.length;
 529                 for (int i=0; i<numLines; i++)
 530                 {
 531                         inWriter.write(outputLines[i]);
 532                         inWriter.write(inLineSeparator);
 533                 }
 534         }
 535
 536
 537         /**
 538          * Write out all the lat and long lines to the file
 539          * @param inWriter Writer to use for writing file
 540          * @param inModel model object for getting lat/long lines
 541          * @param inLineSeparator line separator to use
 542          * @throws IOException on file writing error
 543          */
 544         private static void writeLatLongLines(FileWriter inWriter, ThreeDModel inModel, String inLineSeparator)
 545         throws IOException
 546         {
 547                 inWriter.write("// Latitude and longitude lines:");
 548                 inWriter.write(inLineSeparator);
 549                 int numlines = inModel.getLatitudeLines().length;
 550                 for (int i=0; i<numlines; i++)
 551                 {
 552                         // write cylinder to file
 553                         inWriter.write("object { lat_line translate <0, 0, " + inModel.getScaledLatitudeLine(i) + "> }");
 554                         inWriter.write(inLineSeparator);
 555                 }
 556                 numlines = inModel.getLongitudeLines().length;
 557                 for (int i=0; i<numlines; i++)
 558                 {
 559                         // write cylinder to file
 560                         inWriter.write("object { lon_line translate <" + inModel.getScaledLongitudeLine(i) + ", 0, 0> }");
 561                         inWriter.write(inLineSeparator);
 562                 }
 563                 inWriter.write(inLineSeparator);
 564         }
 565
 566
 567         /**
 568          * Write out all the data points to the file in the balls-and-sticks style
 569          * @param inWriter Writer to use for writing file
 570          * @param inModel model object for getting data points
 571          * @param inLineSeparator line separator to use
 572          * @throws IOException on file writing error
 573          */
 574         private static void writeDataPointsBallsAndSticks(FileWriter inWriter, ThreeDModel inModel, String inLineSeparator)
 575         throws IOException
 576         {
 577                 inWriter.write("// Data points:");
 578                 inWriter.write(inLineSeparator);
 579                 int numPoints = inModel.getNumPoints();
 580                 for (int i=0; i<numPoints; i++)
 581                 {
 582                         // ball (different according to type)
 583                         if (inModel.getPointType(i) == ThreeDModel.POINT_TYPE_WAYPOINT)
 584                         {
 585                                 // waypoint ball
 586                                 inWriter.write("object { waypoint_sphere translate <" + inModel.getScaledHorizValue(i)
 587                                         + "," + inModel.getScaledAltValue(i) + "," + inModel.getScaledVertValue(i) + "> }");
 588                         }
 589                         else
 590                         {
 591                                 // normal track point ball
 592                                 inWriter.write("object { track_sphere" + checkHeightCode(inModel.getPointHeightCode(i))
 593                                         + " translate <" + inModel.getScaledHorizValue(i) + "," + inModel.getScaledAltValue(i)
 594                                         + "," + inModel.getScaledVertValue(i) + "> }");
 595                         }
 596                         inWriter.write(inLineSeparator);
 597                         // vertical rod (if altitude positive)
 598                         if (inModel.getScaledAltValue(i) > 0.0)
 599                         {
 600                                 inWriter.write("object { point_rod translate <" + inModel.getScaledHorizValue(i) + ",0,"
 601                                         + inModel.getScaledVertValue(i) + "> scale <1," + inModel.getScaledAltValue(i) + ",1> }");
 602                                 inWriter.write(inLineSeparator);
 603                         }
 604                 }
 605                 inWriter.write(inLineSeparator);
 606         }
 607
 608
 609         /**
 610          * Write out all the data points to the file in the tubes-and-walls style
 611          * @param inWriter Writer to use for writing file
 612          * @param inModel model object for getting data points
 613          * @param inLineSeparator line separator to use
 614          * @throws IOException on file writing error
 615          */
 616         private static void writeDataPointsTubesAndWalls(FileWriter inWriter, ThreeDModel inModel, String inLineSeparator)
 617         throws IOException
 618         {
 619                 inWriter.write("// Data points:");
 620                 inWriter.write(inLineSeparator);
 621                 int numPoints = inModel.getNumPoints();
 622                 int numTrackPoints = 0;
 623                 // Loop over all points and write out waypoints as balls
 624                 for (int i=0; i<numPoints; i++)
 625                 {
 626                         if (inModel.getPointType(i) == ThreeDModel.POINT_TYPE_WAYPOINT)
 627                         {
 628                                 // waypoint ball
 629                                 inWriter.write("object { waypoint_sphere translate <" + inModel.getScaledHorizValue(i)
 630                                         + "," + inModel.getScaledAltValue(i) + "," + inModel.getScaledVertValue(i) + "> }");
 631                                 // vertical rod (if altitude positive)
 632                                 if (inModel.getScaledAltValue(i) > 0.0)
 633                                 {
 634                                         inWriter.write(inLineSeparator);
 635                                         inWriter.write("object { point_rod translate <" + inModel.getScaledHorizValue(i) + ",0,"
 636                                                 + inModel.getScaledVertValue(i) + "> scale <1," + inModel.getScaledAltValue(i) + ",1> }");
 637                                 }
 638                                 inWriter.write(inLineSeparator);
 639                         }
 640                         else {numTrackPoints++;}
 641                 }
 642                 inWriter.write(inLineSeparator);
 643
 644                 // Loop over all the track segments
 645                 ArrayList<ModelSegment> segmentList = getSegmentList(inModel);
 646                 Iterator<ModelSegment> segmentIterator = segmentList.iterator();
 647                 while (segmentIterator.hasNext())
 648                 {
 649                         ModelSegment segment = segmentIterator.next();
 650                         int segLength = segment.getNumTrackPoints();
 651
 652                         // if the track segment is long enough, do a cubic spline sphere sweep
 653                         if (segLength <= 1)
 654                         {
 655                                 // single point in segment - just draw sphere
 656                                 int index = segment.getStartIndex();
 657                                 inWriter.write("object { track_sphere_t"
 658                                         + " translate <" + inModel.getScaledHorizValue(index) + "," + inModel.getScaledAltValue(index)
 659                                         + "," + inModel.getScaledVertValue(index) + "> }");
 660                                 // maybe draw some kind of polygon too or rod?
 661                         }
 662                         else
 663                         {
 664                                 writeSphereSweep(inWriter, inModel, segment, inLineSeparator);
 665                         }
 666
 667                         // Write wall underneath segment
 668                         if (segLength > 1)
 669                         {
 670                                 writePolygonWall(inWriter, inModel, segment, inLineSeparator);
 671                         }
 672                 }
 673         }
 674
 675
 676         /**
 677          * Write out a single sphere sweep using either cubic spline or linear spline
 678          * @param inWriter Writer to use for writing file
 679          * @param inModel model object for getting data points
 680          * @param inSegment model segment to draw
 681          * @param inLineSeparator line separator to use
 682          * @throws IOException on file writing error
 683          */
 684         private static void writeSphereSweep(FileWriter inWriter, ThreeDModel inModel, ModelSegment inSegment, String inLineSeparator)
 685         throws IOException
 686         {
 687                 // 3d sphere sweep
 688                 inWriter.write("// Sphere sweep:");
 689                 inWriter.write(inLineSeparator);
 690                 String splineType = inSegment.getNumTrackPoints() < 5?"linear_spline":"cubic_spline";
 691                 inWriter.write("sphere_sweep { "); inWriter.write(splineType);
 692                 inWriter.write(" " + inSegment.getNumTrackPoints() + ",");
 693                 inWriter.write(inLineSeparator);
 694                 // Loop over all points in this segment and write out sphere sweep
 695                 for (int i=inSegment.getStartIndex(); i<=inSegment.getEndIndex(); i++)
 696                 {
 697                         if (inModel.getPointType(i) != ThreeDModel.POINT_TYPE_WAYPOINT)
 698                         {
 699                                 inWriter.write("  <" + inModel.getScaledHorizValue(i) + "," + inModel.getScaledAltValue(i)
 700                                         + "," + inModel.getScaledVertValue(i) + ">, 0.25");
 701                                 inWriter.write(inLineSeparator);
 702                         }
 703                 }
 704                 inWriter.write("  tolerance 0.1");
 705                 inWriter.write(inLineSeparator);
 706                 inWriter.write("  texture { pigment {color rgb <0.6 1.0 0.2>}  finish {phong 1} }");
 707                 inWriter.write(inLineSeparator);
 708                 inWriter.write("  no_shadow");
 709                 inWriter.write(inLineSeparator);
 710                 inWriter.write("}");
 711                 inWriter.write(inLineSeparator);
 712         }
 713
 714
 715         /**
 716          * Write out a single polygon-based wall for the tubes-and-walls style
 717          * @param inWriter Writer to use for writing file
 718          * @param inModel model object for getting data points
 719          * @param inSegment model segment to draw
 720          * @param inLineSeparator line separator to use
 721          * @throws IOException on file writing error
 722          */
 723         private static void writePolygonWall(FileWriter inWriter, ThreeDModel inModel, ModelSegment inSegment, String inLineSeparator)
 724         throws IOException
 725         {
 726                 // wall
 727                 inWriter.write(inLineSeparator);
 728                 inWriter.write("// wall between sweep and floor:");
 729                 inWriter.write(inLineSeparator);
 730                 // Loop over all points in this segment again and write out polygons
 731                 int prevIndex = -1;
 732                 for (int i=inSegment.getStartIndex(); i<=inSegment.getEndIndex(); i++)
 733                 {
 734                         if (inModel.getPointType(i) != ThreeDModel.POINT_TYPE_WAYPOINT)
 735                         {
 736                                 if (prevIndex >= 0)
 737                                 {
 738                                         double xDiff = inModel.getScaledHorizValue(i) - inModel.getScaledHorizValue(prevIndex);
 739                                         double yDiff = inModel.getScaledVertValue(i) - inModel.getScaledVertValue(prevIndex);
 740                                         double dist = Math.sqrt(xDiff * xDiff + yDiff * yDiff);
 741                                         if (dist > 0)
 742                                         {
 743                                                 inWriter.write("polygon {");
 744                                                 inWriter.write("  5, <" + inModel.getScaledHorizValue(prevIndex) + ", 0.0, " + inModel.getScaledVertValue(prevIndex) + ">,");
 745                                                 inWriter.write(" <" + inModel.getScaledHorizValue(prevIndex) + ", " + inModel.getScaledAltValue(prevIndex) + ", "
 746                                                         + inModel.getScaledVertValue(prevIndex) + ">,");
 747                                                 inWriter.write(" <" + inModel.getScaledHorizValue(i) + ", " + inModel.getScaledAltValue(i) + ", "
 748                                                         + inModel.getScaledVertValue(i) + ">,");
 749                                                 inWriter.write(" <" + inModel.getScaledHorizValue(i) + ", 0.0, " + inModel.getScaledVertValue(i) + ">,");
 750                                                 inWriter.write(" <" + inModel.getScaledHorizValue(prevIndex) + ", 0.0, " + inModel.getScaledVertValue(prevIndex) + ">");
 751                                                 inWriter.write("  pigment { color wall_colour } no_shadow");
 752                                                 inWriter.write("}");
 753                                                 inWriter.write(inLineSeparator);
 754                                         }
 755                                 }
 756                                 prevIndex = i;
 757                         }
 758                 }
 759         }
 760
 761
 762         /**
 763          * @param inCode height code to check
 764          * @return validated height code within range 0 to max
 765          */
 766         private static byte checkHeightCode(byte inCode)
 767         {
 768                 final byte maxHeightCode = 5;
 769                 if (inCode < 0) return 0;
 770                 if (inCode > maxHeightCode) return maxHeightCode;
 771                 return inCode;
 772         }
 773
 774
 775         /**
 776          * Check the given coordinate
 777          * @param inString String entered by user
 778          * @return validated String value
 779          */
 780         private static String checkCoordinate(String inString)
 781         {
 782                 double value = 0.0;
 783                 try
 784                 {
 785                         value = Double.parseDouble(inString);
 786                 }
 787                 catch (Exception e) {} // ignore parse failures
 788                 return "" + value;
 789         }
 790
 791         /**
 792          * Go through the points making a list of the segment starts and the number of track points in each segment
 793          * @param inModel model containing data
 794          * @return list of ModelSegment objects
 795          */
 796         private static ArrayList<ModelSegment> getSegmentList(ThreeDModel inModel)
 797         {
 798                 ArrayList<ModelSegment> segmentList = new ArrayList<ModelSegment>();
 799                 if (inModel != null && inModel.getNumPoints() > 0)
 800                 {
 801                         ModelSegment currSegment = null;
 802                         int numTrackPoints = 0;
 803                         for (int i=0; i<inModel.getNumPoints(); i++)
 804                         {
 805                                 if (inModel.getPointType(i) != ThreeDModel.POINT_TYPE_WAYPOINT)
 806                                 {
 807                                         if (inModel.getPointType(i) == ThreeDModel.POINT_TYPE_SEGMENT_START || currSegment == null)
 808                                         {
 809                                                 // start of segment
 810                                                 if (currSegment != null)
 811                                                 {
 812                                                         currSegment.setEndIndex(i-1);
 813                                                         currSegment.setNumTrackPoints(numTrackPoints);
 814                                                         segmentList.add(currSegment);
 815                                                         numTrackPoints = 0;
 816                                                 }
 817                                                 currSegment = new ModelSegment(i);
 818                                         }
 819                                         numTrackPoints++;
 820                                 }
 821                         }
 822                         // Add last segment to list
 823                         if (currSegment != null && numTrackPoints > 0)
 824                         {
 825                                 currSegment.setEndIndex(inModel.getNumPoints()-1);
 826                                 currSegment.setNumTrackPoints(numTrackPoints);
 827                                 segmentList.add(currSegment);
 828                         }
 829                 }
 830                 return segmentList;
 831         }
 832 }