1 | // License: GPL. For details, see LICENSE file.
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2 | package org.openstreetmap.josm.actions;
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3 |
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4 | import static org.openstreetmap.josm.gui.help.HelpUtil.ht;
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5 | import static org.openstreetmap.josm.tools.I18n.tr;
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6 |
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7 | import java.awt.event.ActionEvent;
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8 | import java.awt.event.KeyEvent;
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9 | import java.util.Collection;
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10 | import java.util.HashSet;
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11 | import java.util.LinkedList;
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12 | import java.util.Set;
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13 |
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14 | import javax.swing.JOptionPane;
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15 |
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16 | import org.openstreetmap.josm.command.Command;
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17 | import org.openstreetmap.josm.command.MoveCommand;
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18 | import org.openstreetmap.josm.command.SequenceCommand;
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19 | import org.openstreetmap.josm.data.osm.Node;
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20 | import org.openstreetmap.josm.data.osm.OsmPrimitive;
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21 | import org.openstreetmap.josm.data.osm.Way;
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22 | import org.openstreetmap.josm.gui.MainApplication;
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23 | import org.openstreetmap.josm.gui.Notification;
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24 | import org.openstreetmap.josm.tools.Shortcut;
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25 |
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26 | /**
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27 | * Mirror the selected nodes or ways along the vertical axis
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28 | *
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29 | * Note: If a ways are selected, their nodes are mirrored
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30 | *
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31 | * @author Teemu Koskinen
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32 | */
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33 | public final class MirrorAction extends JosmAction {
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34 |
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35 | /**
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36 | * Constructs a new {@code MirrorAction}.
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37 | */
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38 | public MirrorAction() {
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39 | super(tr("Mirror"), "mirror", tr("Mirror selected nodes and ways."),
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40 | Shortcut.registerShortcut("tools:mirror", tr("Tool: {0}", tr("Mirror")),
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41 | KeyEvent.VK_M, Shortcut.SHIFT), true);
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42 | putValue("help", ht("/Action/Mirror"));
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43 | }
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44 |
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45 | @Override
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46 | public void actionPerformed(ActionEvent e) {
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47 | Collection<OsmPrimitive> sel = getLayerManager().getEditDataSet().getSelected();
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48 | Set<Node> nodes = new HashSet<>();
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49 |
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50 | for (OsmPrimitive osm : sel) {
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51 | if (osm instanceof Node) {
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52 | nodes.add((Node) osm);
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53 | } else if (osm instanceof Way) {
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54 | nodes.addAll(((Way) osm).getNodes());
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55 | }
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56 | }
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57 |
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58 | if (nodes.isEmpty()) {
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59 | new Notification(
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60 | tr("Please select at least one node or way."))
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61 | .setIcon(JOptionPane.INFORMATION_MESSAGE)
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62 | .setDuration(Notification.TIME_SHORT)
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63 | .show();
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64 | return;
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65 | }
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66 |
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67 | double minEast = 20000000000.0;
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68 | double maxEast = -20000000000.0;
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69 | for (Node n : nodes) {
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70 | double east = n.getEastNorth().east();
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71 | minEast = Math.min(minEast, east);
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72 | maxEast = Math.max(maxEast, east);
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73 | }
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74 | double middle = (minEast + maxEast) / 2;
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75 |
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76 | Collection<Command> cmds = new LinkedList<>();
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77 |
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78 | for (Node n : nodes) {
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79 | cmds.add(new MoveCommand(n, 2 * (middle - n.getEastNorth().east()), 0.0));
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80 | }
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81 |
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82 | MainApplication.undoRedo.add(new SequenceCommand(tr("Mirror"), cmds));
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83 | }
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84 |
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85 | @Override
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86 | protected void updateEnabledState() {
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87 | updateEnabledStateOnCurrentSelection();
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88 | }
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89 |
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90 | @Override
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91 | protected void updateEnabledState(Collection<? extends OsmPrimitive> selection) {
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92 | setEnabled(selection != null && !selection.isEmpty());
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93 | }
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94 | }
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