source: josm/trunk/src/org/openstreetmap/josm/actions/mapmode/ExtrudeAction.java@ 7217

Last change on this file since 7217 was 7217, checked in by akks, 10 years ago

see #10104: refactor key press/release detection introducing Main.map.keyDetector
  • Property svn:eol-style set to native
File size: 46.4 KB
Line 
1// License: GPL. For details, see LICENSE file.
2package org.openstreetmap.josm.actions.mapmode;
3
4import static org.openstreetmap.josm.gui.help.HelpUtil.ht;
5import static org.openstreetmap.josm.tools.I18n.marktr;
6import static org.openstreetmap.josm.tools.I18n.tr;
7
8import java.awt.BasicStroke;
9import java.awt.Color;
10import java.awt.Cursor;
11import java.awt.Graphics2D;
12import java.awt.Point;
13import java.awt.Rectangle;
14import java.awt.Stroke;
15import java.awt.event.ActionEvent;
16import java.awt.event.KeyEvent;
17import java.awt.event.MouseEvent;
18import java.awt.geom.AffineTransform;
19import java.awt.geom.GeneralPath;
20import java.awt.geom.Line2D;
21import java.awt.geom.NoninvertibleTransformException;
22import java.awt.geom.Point2D;
23import java.util.ArrayList;
24import java.util.Collection;
25import java.util.LinkedList;
26import java.util.List;
27import javax.swing.JCheckBoxMenuItem;
28import javax.swing.JMenuItem;
29
30import org.openstreetmap.josm.Main;
31import org.openstreetmap.josm.actions.JosmAction;
32import org.openstreetmap.josm.command.AddCommand;
33import org.openstreetmap.josm.command.ChangeCommand;
34import org.openstreetmap.josm.command.Command;
35import org.openstreetmap.josm.command.MoveCommand;
36import org.openstreetmap.josm.command.SequenceCommand;
37import org.openstreetmap.josm.data.Bounds;
38import org.openstreetmap.josm.data.coor.EastNorth;
39import org.openstreetmap.josm.data.osm.Node;
40import org.openstreetmap.josm.data.osm.OsmPrimitive;
41import org.openstreetmap.josm.data.osm.Way;
42import org.openstreetmap.josm.data.osm.WaySegment;
43import org.openstreetmap.josm.data.osm.visitor.paint.PaintColors;
44import org.openstreetmap.josm.gui.MainMenu;
45import org.openstreetmap.josm.gui.MapFrame;
46import org.openstreetmap.josm.gui.MapView;
47import org.openstreetmap.josm.gui.layer.Layer;
48import org.openstreetmap.josm.gui.layer.MapViewPaintable;
49import org.openstreetmap.josm.gui.layer.OsmDataLayer;
50import org.openstreetmap.josm.gui.util.KeyPressReleaseListener;
51import org.openstreetmap.josm.gui.util.GuiHelper;
52import org.openstreetmap.josm.gui.util.ModifierListener;
53import org.openstreetmap.josm.tools.Geometry;
54import org.openstreetmap.josm.tools.ImageProvider;
55import org.openstreetmap.josm.tools.Shortcut;
56
57/**
58 * Makes a rectangle from a line, or modifies a rectangle.
59 */
60public class ExtrudeAction extends MapMode implements MapViewPaintable, KeyPressReleaseListener, ModifierListener {
61
62 enum Mode { extrude, translate, select, create_new, translate_node }
63
64 private Mode mode = Mode.select;
65
66 /**
67 * If {@code true}, when extruding create new node(s) even if segments are parallel.
68 */
69 private boolean alwaysCreateNodes = false;
70 private boolean nodeDragWithoutCtrl;
71
72 private long mouseDownTime = 0;
73 private WaySegment selectedSegment = null;
74 private Node selectedNode = null;
75 private Color mainColor;
76 private Stroke mainStroke;
77
78 /** settings value whether shared nodes should be ignored or not */
79 private boolean ignoreSharedNodes;
80
81 /**
82 * drawing settings for helper lines
83 */
84 private Color helperColor;
85 private Stroke helperStrokeDash;
86 private Stroke helperStrokeRA;
87
88 private Stroke oldLineStroke;
89 private double symbolSize;
90 /**
91 * Possible directions to move to.
92 */
93 private List<ReferenceSegment> possibleMoveDirections;
94
95
96 /**
97 * Collection of nodes that is moved
98 */
99 private ArrayList<OsmPrimitive> movingNodeList;
100
101 /**
102 * The direction that is currently active.
103 */
104 private ReferenceSegment activeMoveDirection;
105
106 /**
107 * The position of the mouse cursor when the drag action was initiated.
108 */
109 private Point initialMousePos;
110 /**
111 * The time which needs to pass between click and release before something
112 * counts as a move, in milliseconds
113 */
114 private int initialMoveDelay = 200;
115 /**
116 * The minimal shift of mouse (in pixels) befire something counts as move
117 */
118 private int initialMoveThreshold = 1;
119
120 /**
121 * The initial EastNorths of node1 and node2
122 */
123 private EastNorth initialN1en;
124 private EastNorth initialN2en;
125 /**
126 * The new EastNorths of node1 and node2
127 */
128 private EastNorth newN1en;
129 private EastNorth newN2en;
130
131 /**
132 * the command that performed last move.
133 */
134 private MoveCommand moveCommand;
135 /**
136 * The command used for dual alignment movement.
137 * Needs to be separate, due to two nodes moving in different directions.
138 */
139 private MoveCommand moveCommand2;
140
141 /** The cursor for the 'create_new' mode. */
142 private final Cursor cursorCreateNew;
143
144 /** The cursor for the 'translate' mode. */
145 private final Cursor cursorTranslate;
146
147 /** The cursor for the 'alwaysCreateNodes' submode. */
148 private final Cursor cursorCreateNodes;
149
150 private boolean ignoreNextKeyRelease;
151
152 private static class ReferenceSegment {
153 public final EastNorth en;
154 public final EastNorth p1;
155 public final EastNorth p2;
156 public final boolean perpendicular;
157
158 public ReferenceSegment(EastNorth en, EastNorth p1, EastNorth p2, boolean perpendicular) {
159 this.en = en;
160 this.p1 = p1;
161 this.p2 = p2;
162 this.perpendicular = perpendicular;
163 }
164
165 @Override
166 public String toString() {
167 return "ReferenceSegment[en=" + en + ", p1=" + p1 + ", p2=" + p2 + ", perp=" + perpendicular + "]";
168 }
169 }
170
171 // Dual alignment mode stuff
172 /** {@code true}, if dual alignment mode is enabled. User wants following extrude to be dual aligned. */
173 private boolean dualAlignEnabled;
174 /** {@code true}, if dual alignment is active. User is dragging the mouse, required conditions are met. Treat {@link #mode} (extrude/translate/create_new) as dual aligned. */
175 private boolean dualAlignActive;
176 /** Dual alignment reference segments */
177 private ReferenceSegment dualAlignSegment1, dualAlignSegment2;
178 // Dual alignment UI stuff
179 private final DualAlignChangeAction dualAlignChangeAction;
180 private final JCheckBoxMenuItem dualAlignCheckboxMenuItem;
181 private final Shortcut dualAlignShortcut;
182 private boolean useRepeatedShortcut;
183
184 private class DualAlignChangeAction extends JosmAction {
185 public DualAlignChangeAction() {
186 super(tr("Dual alignment"), "mapmode/extrude/dualalign",
187 tr("Switch dual alignment mode while extruding"), null, false);
188 putValue("help", ht("/Action/Extrude#DualAlign"));
189 }
190
191 @Override
192 public void actionPerformed(ActionEvent e) {
193 toggleDualAlign();
194 }
195 }
196
197 /**
198 * Creates a new ExtrudeAction
199 * @param mapFrame The MapFrame this action belongs to.
200 */
201 public ExtrudeAction(MapFrame mapFrame) {
202 super(tr("Extrude"), "extrude/extrude", tr("Create areas"),
203 Shortcut.registerShortcut("mapmode:extrude", tr("Mode: {0}", tr("Extrude")), KeyEvent.VK_X, Shortcut.DIRECT),
204 mapFrame,
205 ImageProvider.getCursor("normal", "rectangle"));
206 putValue("help", ht("/Action/Extrude"));
207 cursorCreateNew = ImageProvider.getCursor("normal", "rectangle_plus");
208 cursorTranslate = ImageProvider.getCursor("normal", "rectangle_move");
209 cursorCreateNodes = ImageProvider.getCursor("normal", "rectangle_plussmall");
210
211 dualAlignEnabled = false;
212 dualAlignChangeAction = new DualAlignChangeAction();
213 dualAlignCheckboxMenuItem = addDualAlignMenuItem();
214 dualAlignCheckboxMenuItem.getAction().setEnabled(false);
215 dualAlignCheckboxMenuItem.setState(dualAlignEnabled);
216 dualAlignShortcut = Shortcut.registerShortcut("mapmode:extrudedualalign",
217 tr("Mode: {0}", tr("Extrude Dual alignment")), KeyEvent.CHAR_UNDEFINED, Shortcut.NONE);
218 useRepeatedShortcut = Main.pref.getBoolean("extrude.dualalign.toggleOnRepeatedX", true);
219 }
220
221 @Override
222 public void destroy() {
223 super.destroy();
224 dualAlignChangeAction.destroy();
225 }
226
227 private JCheckBoxMenuItem addDualAlignMenuItem() {
228 int n = Main.main.menu.editMenu.getItemCount();
229 for (int i = n-1; i>0; i--) {
230 JMenuItem item = Main.main.menu.editMenu.getItem(i);
231 if (item != null && item.getAction() != null && item.getAction() instanceof DualAlignChangeAction) {
232 Main.main.menu.editMenu.remove(i);
233 }
234 }
235 return MainMenu.addWithCheckbox(Main.main.menu.editMenu, dualAlignChangeAction, MainMenu.WINDOW_MENU_GROUP.VOLATILE);
236 }
237
238 // -------------------------------------------------------------------------
239 // Mode methods
240 // -------------------------------------------------------------------------
241
242 @Override
243 public String getModeHelpText() {
244 StringBuilder rv;
245 if (mode == Mode.select) {
246 rv = new StringBuilder(tr("Drag a way segment to make a rectangle. Ctrl-drag to move a segment along its normal, " +
247 "Alt-drag to create a new rectangle, double click to add a new node."));
248 if (dualAlignEnabled)
249 rv.append(" ").append(tr("Dual alignment active."));
250 } else {
251 if (mode == Mode.translate)
252 rv = new StringBuilder(tr("Move a segment along its normal, then release the mouse button."));
253 else if (mode == Mode.translate_node)
254 rv = new StringBuilder(tr("Move the node along one of the segments, then release the mouse button."));
255 else if (mode == Mode.extrude)
256 rv = new StringBuilder(tr("Draw a rectangle of the desired size, then release the mouse button."));
257 else if (mode == Mode.create_new)
258 rv = new StringBuilder(tr("Draw a rectangle of the desired size, then release the mouse button."));
259 else {
260 Main.warn("Extrude: unknown mode " + mode);
261 rv = new StringBuilder();
262 }
263 if (dualAlignActive)
264 rv.append(" ").append(tr("Dual alignment active."));
265 }
266 return rv.toString();
267 }
268
269 @Override
270 public boolean layerIsSupported(Layer l) {
271 return l instanceof OsmDataLayer;
272 }
273
274 @Override
275 public void enterMode() {
276 super.enterMode();
277 Main.map.mapView.addMouseListener(this);
278 Main.map.mapView.addMouseMotionListener(this);
279 initialMoveDelay = Main.pref.getInteger("edit.initial-move-delay",200);
280 initialMoveThreshold = Main.pref.getInteger("extrude.initial-move-threshold", 1);
281 mainColor = Main.pref.getColor(marktr("Extrude: main line"), null);
282 if (mainColor == null) mainColor = PaintColors.SELECTED.get();
283 helperColor = Main.pref.getColor(marktr("Extrude: helper line"), Color.ORANGE);
284 helperStrokeDash = GuiHelper.getCustomizedStroke(Main.pref.get("extrude.stroke.helper-line", "1 4"));
285 helperStrokeRA = new BasicStroke(1);
286 symbolSize = Main.pref.getDouble("extrude.angle-symbol-radius", 8);
287 nodeDragWithoutCtrl = Main.pref.getBoolean("extrude.drag-nodes-without-ctrl", false);
288 oldLineStroke = GuiHelper.getCustomizedStroke(Main.pref.get("extrude.ctrl.stroke.old-line", "1"));
289 mainStroke = GuiHelper.getCustomizedStroke(Main.pref.get("extrude.stroke.main", "3"));
290
291 ignoreSharedNodes = Main.pref.getBoolean("extrude.ignore-shared-nodes", true);
292 dualAlignCheckboxMenuItem.getAction().setEnabled(true);
293 ignoreNextKeyRelease = true;
294 Main.map.keyDetector.addKeyListener(this);
295 Main.map.keyDetector.addModifierListener(this);
296 }
297
298 @Override
299 public void exitMode() {
300 Main.map.mapView.removeMouseListener(this);
301 Main.map.mapView.removeMouseMotionListener(this);
302 Main.map.mapView.removeTemporaryLayer(this);
303 dualAlignCheckboxMenuItem.getAction().setEnabled(false);
304 Main.map.keyDetector.removeKeyListener(this);
305 Main.map.keyDetector.removeModifierListener(this);
306 super.exitMode();
307 }
308
309 // -------------------------------------------------------------------------
310 // Event handlers
311 // -------------------------------------------------------------------------
312
313 /**
314 * This method is called to indicate different modes via cursor when the Alt/Ctrl/Shift modifier is pressed,
315 */
316 @Override
317 public void modifiersChanged(int modifiers) {
318 if (!Main.isDisplayingMapView() || !Main.map.mapView.isActiveLayerDrawable())
319 return;
320 updateKeyModifiers(modifiers);
321 if (mode == Mode.select) {
322 Main.map.mapView.setNewCursor(ctrl ? cursorTranslate : alt ? cursorCreateNew : shift ? cursorCreateNodes : cursor, this);
323 }
324 };
325
326 @Override
327 public void doKeyPressed(KeyEvent e) {
328 }
329
330 @Override
331 public void doKeyReleased(KeyEvent e) {
332 if (!dualAlignShortcut.isEvent(e) && !(useRepeatedShortcut && getShortcut().isEvent(e)))
333 return;
334 if (ignoreNextKeyRelease) {
335 ignoreNextKeyRelease = false;
336 } else {
337 toggleDualAlign();
338 }
339 }
340 /**
341 * Toggles dual alignment mode.
342 */
343 private void toggleDualAlign() {
344 dualAlignEnabled = !dualAlignEnabled;
345 dualAlignCheckboxMenuItem.setState(dualAlignEnabled);
346 updateStatusLine();
347 }
348
349 /**
350 * If the left mouse button is pressed over a segment or a node, switches
351 * to appropriate {@link #mode}, depending on Ctrl/Alt/Shift modifiers and
352 * {@link #dualAlignEnabled}.
353 * @param e
354 */
355 @Override
356 public void mousePressed(MouseEvent e) {
357 if(!Main.map.mapView.isActiveLayerVisible())
358 return;
359 if (!(Boolean)this.getValue("active"))
360 return;
361 if (e.getButton() != MouseEvent.BUTTON1)
362 return;
363
364 requestFocusInMapView();
365 updateKeyModifiers(e);
366
367 selectedNode = Main.map.mapView.getNearestNode(e.getPoint(), OsmPrimitive.isSelectablePredicate);
368 selectedSegment = Main.map.mapView.getNearestWaySegment(e.getPoint(), OsmPrimitive.isSelectablePredicate);
369
370 // If nothing gets caught, stay in select mode
371 if (selectedSegment == null && selectedNode == null) return;
372
373 if (selectedNode != null) {
374 if (ctrl || nodeDragWithoutCtrl) {
375 movingNodeList = new ArrayList<>();
376 movingNodeList.add(selectedNode);
377 calculatePossibleDirectionsByNode();
378 if (possibleMoveDirections.isEmpty()) {
379 // if no directions fould, do not enter dragging mode
380 return;
381 }
382 mode = Mode.translate_node;
383 dualAlignActive = false;
384 }
385 } else {
386 // Otherwise switch to another mode
387 if (dualAlignEnabled && checkDualAlignConditions()) {
388 dualAlignActive = true;
389 calculatePossibleDirectionsForDualAlign();
390 } else {
391 dualAlignActive = false;
392 calculatePossibleDirectionsBySegment();
393 }
394 if (ctrl) {
395 mode = Mode.translate;
396 movingNodeList = new ArrayList<>();
397 movingNodeList.add(selectedSegment.getFirstNode());
398 movingNodeList.add(selectedSegment.getSecondNode());
399 } else if (alt) {
400 mode = Mode.create_new;
401 // create a new segment and then select and extrude the new segment
402 getCurrentDataSet().setSelected(selectedSegment.way);
403 alwaysCreateNodes = true;
404 } else {
405 mode = Mode.extrude;
406 getCurrentDataSet().setSelected(selectedSegment.way);
407 alwaysCreateNodes = shift;
408 }
409 }
410
411 // Signifies that nothing has happened yet
412 newN1en = null;
413 newN2en = null;
414 moveCommand = null;
415 moveCommand2 = null;
416
417 Main.map.mapView.addTemporaryLayer(this);
418
419 updateStatusLine();
420 Main.map.mapView.repaint();
421
422 // Make note of time pressed
423 mouseDownTime = System.currentTimeMillis();
424
425 // Make note of mouse position
426 initialMousePos = e.getPoint();
427 }
428
429 /**
430 * Performs action depending on what {@link #mode} we're in.
431 * @param e
432 */
433 @Override
434 public void mouseDragged(MouseEvent e) {
435 if(!Main.map.mapView.isActiveLayerVisible())
436 return;
437
438 // do not count anything as a drag if it lasts less than 100 milliseconds.
439 if (System.currentTimeMillis() - mouseDownTime < initialMoveDelay)
440 return;
441
442 if (mode == Mode.select) {
443 // Just sit tight and wait for mouse to be released.
444 } else {
445 //move, create new and extrude mode - move the selected segment
446
447 EastNorth mouseEn = Main.map.mapView.getEastNorth(e.getPoint().x, e.getPoint().y);
448 EastNorth bestMovement = calculateBestMovement(mouseEn);
449 EastNorth n1movedEn = new EastNorth(initialN1en.getX() + bestMovement.getX(), initialN1en.getY() + bestMovement.getY());
450
451 // find out the movement distance, in metres
452 double distance = Main.getProjection().eastNorth2latlon(initialN1en).greatCircleDistance(Main.getProjection().eastNorth2latlon(n1movedEn));
453 Main.map.statusLine.setDist(distance);
454 updateStatusLine();
455
456 Main.map.mapView.setNewCursor(Cursor.MOVE_CURSOR, this);
457
458 if (dualAlignActive) {
459 calculateDualAlignNodesPositions(bestMovement);
460
461 if (mode == Mode.extrude || mode == Mode.create_new) {
462 // nothing here
463 } else if (mode == Mode.translate) {
464 EastNorth movement1 = initialN1en.sub(newN1en);
465 EastNorth movement2 = initialN2en.sub(newN2en);
466 // move nodes to new position
467 if (moveCommand == null || moveCommand2 == null) {
468 // make a new move commands
469 moveCommand = new MoveCommand(movingNodeList.get(0), movement1.getX(), movement1.getY());
470 moveCommand2 = new MoveCommand(movingNodeList.get(1), movement2.getX(), movement2.getY());
471 Command c = new SequenceCommand(tr("Extrude Way"), moveCommand, moveCommand2);
472 Main.main.undoRedo.add(c);
473 } else {
474 // reuse existing move commands
475 moveCommand.moveAgainTo(movement1.getX(), movement1.getY());
476 moveCommand2.moveAgainTo(movement2.getX(), movement2.getY());
477 }
478 }
479 } else {
480 newN1en = n1movedEn;
481 newN2en = new EastNorth(initialN2en.getX() + bestMovement.getX(), initialN2en.getY() + bestMovement.getY());
482
483 if (mode == Mode.extrude || mode == Mode.create_new) {
484 //nothing here
485 } else if (mode == Mode.translate_node || mode == Mode.translate) {
486 //move nodes to new position
487 if (moveCommand == null) {
488 //make a new move command
489 moveCommand = new MoveCommand(movingNodeList, bestMovement.getX(), bestMovement.getY());
490 Main.main.undoRedo.add(moveCommand);
491 } else {
492 //reuse existing move command
493 moveCommand.moveAgainTo(bestMovement.getX(), bestMovement.getY());
494 }
495 }
496 }
497
498 Main.map.mapView.repaint();
499 }
500 }
501
502 /**
503 * Does anything that needs to be done, then switches back to select mode.
504 * @param e
505 */
506 @Override
507 public void mouseReleased(MouseEvent e) {
508
509 if(!Main.map.mapView.isActiveLayerVisible())
510 return;
511
512 if (mode == Mode.select) {
513 // Nothing to be done
514 } else {
515 if (mode == Mode.create_new) {
516 if (e.getPoint().distance(initialMousePos) > initialMoveThreshold && newN1en != null) {
517 createNewRectangle();
518 }
519 } else if (mode == Mode.extrude) {
520 if( e.getClickCount() == 2 && e.getPoint().equals(initialMousePos) ) {
521 // double click adds a new node
522 addNewNode(e);
523 }
524 else if (e.getPoint().distance(initialMousePos) > initialMoveThreshold && newN1en != null && selectedSegment != null) {
525 // main extrusion commands
526 performExtrusion();
527 }
528 } else if (mode == Mode.translate || mode == Mode.translate_node) {
529 //Commit translate
530 //the move command is already committed in mouseDragged
531 }
532
533 updateKeyModifiers(e);
534 // Switch back into select mode
535 Main.map.mapView.setNewCursor(ctrl ? cursorTranslate : alt ? cursorCreateNew : shift ? cursorCreateNodes : cursor, this);
536 Main.map.mapView.removeTemporaryLayer(this);
537 selectedSegment = null;
538 moveCommand = null;
539 mode = Mode.select;
540
541 updateStatusLine();
542 Main.map.mapView.repaint();
543 }
544 }
545
546 // -------------------------------------------------------------------------
547 // Custom methods
548 // -------------------------------------------------------------------------
549
550 /**
551 * Inserts node into nearby segment.
552 * @param e current mouse point
553 */
554 private void addNewNode(MouseEvent e) {
555 // Should maybe do the same as in DrawAction and fetch all nearby segments?
556 WaySegment ws = Main.map.mapView.getNearestWaySegment(e.getPoint(), OsmPrimitive.isSelectablePredicate);
557 if (ws != null) {
558 Node n = new Node(Main.map.mapView.getLatLon(e.getX(), e.getY()));
559 EastNorth A = ws.getFirstNode().getEastNorth();
560 EastNorth B = ws.getSecondNode().getEastNorth();
561 n.setEastNorth(Geometry.closestPointToSegment(A, B, n.getEastNorth()));
562 Way wnew = new Way(ws.way);
563 wnew.addNode(ws.lowerIndex+1, n);
564 SequenceCommand cmds = new SequenceCommand(tr("Add a new node to an existing way"),
565 new AddCommand(n), new ChangeCommand(ws.way, wnew));
566 Main.main.undoRedo.add(cmds);
567 }
568 }
569
570 /**
571 * Creates a new way that shares segment with selected way.
572 */
573 private void createNewRectangle() {
574 if (selectedSegment == null) return;
575 // crete a new rectangle
576 Collection<Command> cmds = new LinkedList<>();
577 Node third = new Node(newN2en);
578 Node fourth = new Node(newN1en);
579 Way wnew = new Way();
580 wnew.addNode(selectedSegment.getFirstNode());
581 wnew.addNode(selectedSegment.getSecondNode());
582 wnew.addNode(third);
583 wnew.addNode(fourth);
584 // ... and close the way
585 wnew.addNode(selectedSegment.getFirstNode());
586 // undo support
587 cmds.add(new AddCommand(third));
588 cmds.add(new AddCommand(fourth));
589 cmds.add(new AddCommand(wnew));
590 Command c = new SequenceCommand(tr("Extrude Way"), cmds);
591 Main.main.undoRedo.add(c);
592 getCurrentDataSet().setSelected(wnew);
593 }
594
595 /**
596 * Does actual extrusion of {@link #selectedSegment}.
597 */
598 private void performExtrusion() {
599 // create extrusion
600 Collection<Command> cmds = new LinkedList<>();
601 Way wnew = new Way(selectedSegment.way);
602 boolean wayWasModified = false;
603 boolean wayWasSingleSegment = wnew.getNodesCount() == 2;
604 int insertionPoint = selectedSegment.lowerIndex + 1;
605
606 //find if the new points overlap existing segments (in case of 90 degree angles)
607 Node prevNode = getPreviousNode(selectedSegment.lowerIndex);
608 boolean nodeOverlapsSegment = prevNode != null && Geometry.segmentsParallel(initialN1en, prevNode.getEastNorth(), initialN1en, newN1en);
609 // segmentAngleZero marks subset of nodeOverlapsSegment. nodeOverlapsSegment is true if angle between segments is 0 or PI, segmentAngleZero only if angle is 0
610 boolean segmentAngleZero = prevNode != null && Math.abs(Geometry.getCornerAngle(prevNode.getEastNorth(), initialN1en, newN1en)) < 1e-5;
611 boolean hasOtherWays = hasNodeOtherWays(selectedSegment.getFirstNode(), selectedSegment.way);
612
613 if (nodeOverlapsSegment && !alwaysCreateNodes && !hasOtherWays) {
614 //move existing node
615 Node n1Old = selectedSegment.getFirstNode();
616 cmds.add(new MoveCommand(n1Old, Main.getProjection().eastNorth2latlon(newN1en)));
617 } else if (ignoreSharedNodes && segmentAngleZero && !alwaysCreateNodes && hasOtherWays) {
618 // replace shared node with new one
619 Node n1Old = selectedSegment.getFirstNode();
620 Node n1New = new Node(Main.getProjection().eastNorth2latlon(newN1en));
621 wnew.addNode(insertionPoint, n1New);
622 wnew.removeNode(n1Old);
623 wayWasModified = true;
624 cmds.add(new AddCommand(n1New));
625 } else {
626 //introduce new node
627 Node n1New = new Node(Main.getProjection().eastNorth2latlon(newN1en));
628 wnew.addNode(insertionPoint, n1New);
629 wayWasModified = true;
630 insertionPoint ++;
631 cmds.add(new AddCommand(n1New));
632 }
633
634 //find if the new points overlap existing segments (in case of 90 degree angles)
635 Node nextNode = getNextNode(selectedSegment.lowerIndex + 1);
636 nodeOverlapsSegment = nextNode != null && Geometry.segmentsParallel(initialN2en, nextNode.getEastNorth(), initialN2en, newN2en);
637 segmentAngleZero = nextNode != null && Math.abs(Geometry.getCornerAngle(nextNode.getEastNorth(), initialN2en, newN2en)) < 1e-5;
638 hasOtherWays = hasNodeOtherWays(selectedSegment.getSecondNode(), selectedSegment.way);
639
640 if (nodeOverlapsSegment && !alwaysCreateNodes && !hasOtherWays) {
641 //move existing node
642 Node n2Old = selectedSegment.getSecondNode();
643 cmds.add(new MoveCommand(n2Old, Main.getProjection().eastNorth2latlon(newN2en)));
644 } else if (ignoreSharedNodes && segmentAngleZero && !alwaysCreateNodes && hasOtherWays) {
645 // replace shared node with new one
646 Node n2Old = selectedSegment.getSecondNode();
647 Node n2New = new Node(Main.getProjection().eastNorth2latlon(newN2en));
648 wnew.addNode(insertionPoint, n2New);
649 wnew.removeNode(n2Old);
650 wayWasModified = true;
651 cmds.add(new AddCommand(n2New));
652 } else {
653 //introduce new node
654 Node n2New = new Node(Main.getProjection().eastNorth2latlon(newN2en));
655 wnew.addNode(insertionPoint, n2New);
656 wayWasModified = true;
657 insertionPoint ++;
658 cmds.add(new AddCommand(n2New));
659 }
660
661 //the way was a single segment, close the way
662 if (wayWasSingleSegment) {
663 wnew.addNode(selectedSegment.getFirstNode());
664 wayWasModified = true;
665 }
666 if (wayWasModified) {
667 // we only need to change the way if its node list was really modified
668 cmds.add(new ChangeCommand(selectedSegment.way, wnew));
669 }
670 Command c = new SequenceCommand(tr("Extrude Way"), cmds);
671 Main.main.undoRedo.add(c);
672 }
673
674 /**
675 * This method tests if {@code node} has other ways apart from the given one.
676 * @param node
677 * @param myWay
678 * @return {@code true} if {@code node} belongs only to {@code myWay}, false if there are more ways.
679 */
680 private static boolean hasNodeOtherWays(Node node, Way myWay) {
681 for (OsmPrimitive p : node.getReferrers()) {
682 if (p instanceof Way && p.isUsable() && p != myWay)
683 return true;
684 }
685 return false;
686 }
687
688 /**
689 * Determines best movement from {@link #initialMousePos} to current mouse position,
690 * choosing one of the directions from {@link #possibleMoveDirections}.
691 * @param mouseEn current mouse position
692 * @return movement vector
693 */
694 private EastNorth calculateBestMovement(EastNorth mouseEn) {
695
696 EastNorth initialMouseEn = Main.map.mapView.getEastNorth(initialMousePos.x, initialMousePos.y);
697 EastNorth mouseMovement = initialMouseEn.sub(mouseEn);
698
699 double bestDistance = Double.POSITIVE_INFINITY;
700 EastNorth bestMovement = null;
701 activeMoveDirection = null;
702
703 //find the best movement direction and vector
704 for (ReferenceSegment direction : possibleMoveDirections) {
705 EastNorth movement = calculateSegmentOffset(initialN1en, initialN2en, direction.en, mouseEn);
706 if (movement == null) {
707 //if direction parallel to segment.
708 continue;
709 }
710
711 double distanceFromMouseMovement = movement.distance(mouseMovement);
712 if (bestDistance > distanceFromMouseMovement) {
713 bestDistance = distanceFromMouseMovement;
714 activeMoveDirection = direction;
715 bestMovement = movement;
716 }
717 }
718 return bestMovement;
719
720
721 }
722
723 /***
724 * This method calculates offset amount by which to move the given segment
725 * perpendicularly for it to be in line with mouse position.
726 * @param segmentP1 segment's first point
727 * @param segmentP2 segment's second point
728 * @param moveDirection direction of movement
729 * @param targetPos mouse position
730 * @return offset amount of P1 and P2.
731 */
732 private static EastNorth calculateSegmentOffset(EastNorth segmentP1, EastNorth segmentP2, EastNorth moveDirection,
733 EastNorth targetPos) {
734 EastNorth intersectionPoint;
735 if (segmentP1.distanceSq(segmentP2)>1e-7) {
736 intersectionPoint = Geometry.getLineLineIntersection(segmentP1, segmentP2, targetPos, targetPos.add(moveDirection));
737 } else {
738 intersectionPoint = Geometry.closestPointToLine(targetPos, targetPos.add(moveDirection), segmentP1);
739 }
740
741 if (intersectionPoint == null)
742 return null;
743 else
744 //return distance form base to target position
745 return intersectionPoint.sub(targetPos);
746 }
747
748 /**
749 * Gathers possible move directions - perpendicular to the selected segment
750 * and parallel to neighboring segments.
751 */
752 private void calculatePossibleDirectionsBySegment() {
753 // remember initial positions for segment nodes.
754 initialN1en = selectedSegment.getFirstNode().getEastNorth();
755 initialN2en = selectedSegment.getSecondNode().getEastNorth();
756
757 //add direction perpendicular to the selected segment
758 possibleMoveDirections = new ArrayList<>();
759 possibleMoveDirections.add(new ReferenceSegment(new EastNorth(
760 initialN1en.getY() - initialN2en.getY(),
761 initialN2en.getX() - initialN1en.getX()
762 ), initialN1en, initialN2en, true));
763
764
765 //add directions parallel to neighbor segments
766 Node prevNode = getPreviousNode(selectedSegment.lowerIndex);
767 if (prevNode != null) {
768 EastNorth en = prevNode.getEastNorth();
769 possibleMoveDirections.add(new ReferenceSegment(new EastNorth(
770 initialN1en.getX() - en.getX(),
771 initialN1en.getY() - en.getY()
772 ), initialN1en, en, false));
773 }
774
775 Node nextNode = getNextNode(selectedSegment.lowerIndex + 1);
776 if (nextNode != null) {
777 EastNorth en = nextNode.getEastNorth();
778 possibleMoveDirections.add(new ReferenceSegment(new EastNorth(
779 initialN2en.getX() - en.getX(),
780 initialN2en.getY() - en.getY()
781 ), initialN2en, en, false));
782 }
783 }
784
785 /**
786 * Gathers possible move directions - along all adjacent segments.
787 */
788 private void calculatePossibleDirectionsByNode() {
789 // remember initial positions for segment nodes.
790 initialN1en = selectedNode.getEastNorth();
791 initialN2en = initialN1en;
792 possibleMoveDirections = new ArrayList<>();
793 for (OsmPrimitive p: selectedNode.getReferrers()) {
794 if (p instanceof Way && p.isUsable()) {
795 for (Node neighbor: ((Way) p).getNeighbours(selectedNode)) {
796 EastNorth en = neighbor.getEastNorth();
797 possibleMoveDirections.add(new ReferenceSegment(new EastNorth(
798 initialN1en.getX() - en.getX(),
799 initialN1en.getY() - en.getY()
800 ), initialN1en, en, false));
801 }
802 }
803 }
804 }
805
806 /**
807 * Checks dual alignment conditions:
808 * 1. selected segment has both neighboring segments,
809 * 2. selected segment is not parallel with neighboring segments.
810 * @return {@code true} if dual alignment conditions are satisfied
811 */
812 private boolean checkDualAlignConditions() {
813 Node prevNode = getPreviousNode(selectedSegment.lowerIndex);
814 Node nextNode = getNextNode(selectedSegment.lowerIndex + 1);
815 if (prevNode == null || nextNode == null) {
816 return false;
817 }
818
819 EastNorth n1en = selectedSegment.getFirstNode().getEastNorth();
820 EastNorth n2en = selectedSegment.getSecondNode().getEastNorth();
821 boolean prevSegmentParallel = Geometry.segmentsParallel(n1en, prevNode.getEastNorth(), n1en, n2en);
822 boolean nextSegmentParallel = Geometry.segmentsParallel(n2en, nextNode.getEastNorth(), n1en, n2en);
823 if (prevSegmentParallel || nextSegmentParallel) {
824 return false;
825 }
826
827 return true;
828 }
829
830 /**
831 * Gathers possible move directions - perpendicular to the selected segment only.
832 * Neighboring segments go to {@link #dualAlignSegment1} and {@link #dualAlignSegment2}.
833 */
834 private void calculatePossibleDirectionsForDualAlign() {
835 // remember initial positions for segment nodes.
836 initialN1en = selectedSegment.getFirstNode().getEastNorth();
837 initialN2en = selectedSegment.getSecondNode().getEastNorth();
838
839 // add direction perpendicular to the selected segment
840 possibleMoveDirections = new ArrayList<ReferenceSegment>();
841 possibleMoveDirections.add(new ReferenceSegment(new EastNorth(
842 initialN1en.getY() - initialN2en.getY(),
843 initialN2en.getX() - initialN1en.getX()
844 ), initialN1en, initialN2en, true));
845
846 // set neighboring segments
847 Node prevNode = getPreviousNode(selectedSegment.lowerIndex);
848 EastNorth prevNodeEn = prevNode.getEastNorth();
849 dualAlignSegment1 = new ReferenceSegment(new EastNorth(
850 initialN1en.getX() - prevNodeEn.getX(),
851 initialN1en.getY() - prevNodeEn.getY()
852 ), initialN1en, prevNodeEn, false);
853
854 Node nextNode = getNextNode(selectedSegment.lowerIndex + 1);
855 EastNorth nextNodeEn = nextNode.getEastNorth();
856 dualAlignSegment2 = new ReferenceSegment(new EastNorth(
857 initialN2en.getX() - nextNodeEn.getX(),
858 initialN2en.getY() - nextNodeEn.getY()
859 ), initialN2en, nextNodeEn, false);
860 }
861
862 /**
863 * Calculates positions of new nodes, aligning them to neighboring segments.
864 * @param movement movement to be used
865 */
866 private void calculateDualAlignNodesPositions(EastNorth movement) {
867 // new positions of selected segment's nodes, without applying dual alignment
868 EastNorth n1movedEn = new EastNorth(initialN1en.getX() + movement.getX(), initialN1en.getY() + movement.getY());
869 EastNorth n2movedEn = new EastNorth(initialN2en.getX() + movement.getX(), initialN2en.getY() + movement.getY());
870
871 // calculate intersections
872 newN1en = Geometry.getLineLineIntersection(n1movedEn, n2movedEn, dualAlignSegment1.p1, dualAlignSegment1.p2);
873 newN2en = Geometry.getLineLineIntersection(n1movedEn, n2movedEn, dualAlignSegment2.p1, dualAlignSegment2.p2);
874 }
875
876 /**
877 * Gets a node index from selected way before given index.
878 * @param index index of current node
879 * @return index of previous node or <code>-1</code> if there are no nodes there.
880 */
881 private int getPreviousNodeIndex(int index) {
882 if (index > 0)
883 return index - 1;
884 else if (selectedSegment.way.isClosed())
885 return selectedSegment.way.getNodesCount() - 2;
886 else
887 return -1;
888 }
889
890 /**
891 * Gets a node from selected way before given index.
892 * @param index index of current node
893 * @return previous node or <code>null</code> if there are no nodes there.
894 */
895 private Node getPreviousNode(int index) {
896 int indexPrev = getPreviousNodeIndex(index);
897 if (indexPrev >= 0)
898 return selectedSegment.way.getNode(indexPrev);
899 else
900 return null;
901 }
902
903
904 /**
905 * Gets a node index from selected way after given index.
906 * @param index index of current node
907 * @return index of next node or <code>-1</code> if there are no nodes there.
908 */
909 private int getNextNodeIndex(int index) {
910 int count = selectedSegment.way.getNodesCount();
911 if (index < count - 1)
912 return index + 1;
913 else if (selectedSegment.way.isClosed())
914 return 1;
915 else
916 return -1;
917 }
918
919 /**
920 * Gets a node from selected way after given index.
921 * @param index index of current node
922 * @return next node or <code>null</code> if there are no nodes there.
923 */
924 private Node getNextNode(int index) {
925 int indexNext = getNextNodeIndex(index);
926 if (indexNext >= 0)
927 return selectedSegment.way.getNode(indexNext);
928 else
929 return null;
930 }
931
932 // -------------------------------------------------------------------------
933 // paint methods
934 // -------------------------------------------------------------------------
935
936 @Override
937 public void paint(Graphics2D g, MapView mv, Bounds box) {
938 Graphics2D g2 = g;
939 if (mode == Mode.select) {
940 // Nothing to do
941 } else {
942 if (newN1en != null) {
943
944 Point p1 = mv.getPoint(initialN1en);
945 Point p2 = mv.getPoint(initialN2en);
946 Point p3 = mv.getPoint(newN1en);
947 Point p4 = mv.getPoint(newN2en);
948
949 Point2D normalUnitVector = getNormalUniVector();
950
951 if (mode == Mode.extrude || mode == Mode.create_new) {
952 g2.setColor(mainColor);
953 g2.setStroke(mainStroke);
954 // Draw rectangle around new area.
955 GeneralPath b = new GeneralPath();
956 b.moveTo(p1.x, p1.y); b.lineTo(p3.x, p3.y);
957 b.lineTo(p4.x, p4.y); b.lineTo(p2.x, p2.y);
958 b.lineTo(p1.x, p1.y);
959 g2.draw(b);
960
961 if (dualAlignActive) {
962 // Draw reference ways
963 drawReferenceSegment(g2, mv, dualAlignSegment1.p1, dualAlignSegment1.p2);
964 drawReferenceSegment(g2, mv, dualAlignSegment2.p1, dualAlignSegment2.p2);
965 } else if (activeMoveDirection != null) {
966 // Draw reference way
967 drawReferenceSegment(g2, mv, activeMoveDirection.p1, activeMoveDirection.p2);
968
969 // Draw right angle marker on first node position, only when moving at right angle
970 if (activeMoveDirection.perpendicular) {
971 // mirror RightAngle marker, so it is inside the extrude
972 double headingRefWS = activeMoveDirection.p1.heading(activeMoveDirection.p2);
973 double headingMoveDir = Math.atan2(normalUnitVector.getY(), normalUnitVector.getX());
974 double headingDiff = headingRefWS - headingMoveDir;
975 if (headingDiff < 0) headingDiff += 2 * Math.PI;
976 boolean mirrorRA = Math.abs(headingDiff - Math.PI) > 1e-5;
977 Point pr1 = mv.getPoint(activeMoveDirection.p1);
978 drawAngleSymbol(g2, pr1, normalUnitVector, mirrorRA);
979 }
980 }
981 } else if (mode == Mode.translate || mode == Mode.translate_node) {
982 g2.setColor(mainColor);
983 if (p1.distance(p2) < 3) {
984 g2.setStroke(mainStroke);
985 g2.drawOval((int)(p1.x-symbolSize/2), (int)(p1.y-symbolSize/2),
986 (int)(symbolSize), (int)(symbolSize));
987 } else {
988 Line2D oldline = new Line2D.Double(p1, p2);
989 g2.setStroke(oldLineStroke);
990 g2.draw(oldline);
991 }
992
993 if (dualAlignActive) {
994 // Draw reference ways
995 drawReferenceSegment(g2, mv, dualAlignSegment1.p1, dualAlignSegment1.p2);
996 drawReferenceSegment(g2, mv, dualAlignSegment2.p1, dualAlignSegment2.p2);
997 } else if (activeMoveDirection != null) {
998
999 g2.setColor(helperColor);
1000 g2.setStroke(helperStrokeDash);
1001 // Draw a guideline along the normal.
1002 Line2D normline;
1003 Point2D centerpoint = new Point2D.Double((p1.getX()+p2.getX())*0.5, (p1.getY()+p2.getY())*0.5);
1004 normline = createSemiInfiniteLine(centerpoint, normalUnitVector, g2);
1005 g2.draw(normline);
1006 // Draw right angle marker on initial position, only when moving at right angle
1007 if (activeMoveDirection.perpendicular) {
1008 // EastNorth units per pixel
1009 g2.setStroke(helperStrokeRA);
1010 g2.setColor(mainColor);
1011 drawAngleSymbol(g2, centerpoint, normalUnitVector, false);
1012 }
1013 }
1014 }
1015 }
1016 g2.setStroke(helperStrokeRA); // restore default stroke to prevent starnge occasional drawings
1017 }
1018 }
1019
1020 private Point2D getNormalUniVector() {
1021 double fac = 1.0 / activeMoveDirection.en.length();
1022 // mult by factor to get unit vector.
1023 Point2D normalUnitVector = new Point2D.Double(activeMoveDirection.en.getX() * fac, activeMoveDirection.en.getY() * fac);
1024
1025 // Check to see if our new N1 is in a positive direction with respect to the normalUnitVector.
1026 // Even if the x component is zero, we should still be able to discern using +0.0 and -0.0
1027 if (newN1en != null && ((newN1en.getX() > initialN1en.getX()) != (normalUnitVector.getX() > -0.0))) {
1028 // If not, use a sign-flipped version of the normalUnitVector.
1029 normalUnitVector = new Point2D.Double(-normalUnitVector.getX(), -normalUnitVector.getY());
1030 }
1031
1032 //HACK: swap Y, because the target pixels are top down, but EastNorth is bottom-up.
1033 //This is normally done by MapView.getPoint, but it does not work on vectors.
1034 normalUnitVector.setLocation(normalUnitVector.getX(), -normalUnitVector.getY());
1035 return normalUnitVector;
1036 }
1037
1038 /**
1039 * Draws right angle symbol at specified position.
1040 * @param g2 the Graphics2D object used to draw on
1041 * @param center center point of angle
1042 * @param normal vector of normal
1043 * @param mirror {@code true} if symbol should be mirrored by the normal
1044 */
1045 private void drawAngleSymbol(Graphics2D g2, Point2D center, Point2D normal, boolean mirror) {
1046 // EastNorth units per pixel
1047 double factor = 1.0/g2.getTransform().getScaleX();
1048 double raoffsetx = symbolSize*factor*normal.getX();
1049 double raoffsety = symbolSize*factor*normal.getY();
1050
1051 double cx = center.getX(), cy = center.getY();
1052 double k = (mirror ? -1 : 1);
1053 Point2D ra1 = new Point2D.Double(cx + raoffsetx, cy + raoffsety);
1054 Point2D ra3 = new Point2D.Double(cx - raoffsety*k, cy + raoffsetx*k);
1055 Point2D ra2 = new Point2D.Double(ra1.getX() - raoffsety*k, ra1.getY() + raoffsetx*k);
1056
1057 GeneralPath ra = new GeneralPath();
1058 ra.moveTo((float)ra1.getX(), (float)ra1.getY());
1059 ra.lineTo((float)ra2.getX(), (float)ra2.getY());
1060 ra.lineTo((float)ra3.getX(), (float)ra3.getY());
1061 g2.setStroke(helperStrokeRA);
1062 g2.draw(ra);
1063 }
1064
1065 /**
1066 * Draws given reference segment.
1067 * @param g2 the Graphics2D object used to draw on
1068 * @param mv
1069 * @param p1en segment's first point
1070 * @param p2en segment's second point
1071 */
1072 private void drawReferenceSegment(Graphics2D g2, MapView mv, EastNorth p1en, EastNorth p2en)
1073 {
1074 Point p1 = mv.getPoint(p1en);
1075 Point p2 = mv.getPoint(p2en);
1076 GeneralPath b = new GeneralPath();
1077 b.moveTo(p1.x, p1.y);
1078 b.lineTo(p2.x, p2.y);
1079 g2.setColor(helperColor);
1080 g2.setStroke(helperStrokeDash);
1081 g2.draw(b);
1082 }
1083
1084 /**
1085 * Creates a new Line that extends off the edge of the viewport in one direction
1086 * @param start The start point of the line
1087 * @param unitvector A unit vector denoting the direction of the line
1088 * @param g the Graphics2D object it will be used on
1089 * @return created line
1090 */
1091 private static Line2D createSemiInfiniteLine(Point2D start, Point2D unitvector, Graphics2D g) {
1092 Rectangle bounds = g.getDeviceConfiguration().getBounds();
1093 try {
1094 AffineTransform invtrans = g.getTransform().createInverse();
1095 Point2D widthpoint = invtrans.deltaTransform(new Point2D.Double(bounds.width,0), null);
1096 Point2D heightpoint = invtrans.deltaTransform(new Point2D.Double(0,bounds.height), null);
1097
1098 // Here we should end up with a gross overestimate of the maximum viewport diagonal in what
1099 // Graphics2D calls 'user space'. Essentially a manhattan distance of manhattan distances.
1100 // This can be used as a safe length of line to generate which will always go off-viewport.
1101 double linelength = Math.abs(widthpoint.getX()) + Math.abs(widthpoint.getY()) + Math.abs(heightpoint.getX()) + Math.abs(heightpoint.getY());
1102
1103 return new Line2D.Double(start, new Point2D.Double(start.getX() + (unitvector.getX() * linelength) , start.getY() + (unitvector.getY() * linelength)));
1104 }
1105 catch (NoninvertibleTransformException e) {
1106 return new Line2D.Double(start, new Point2D.Double(start.getX() + (unitvector.getX() * 10) , start.getY() + (unitvector.getY() * 10)));
1107 }
1108 }
1109}
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