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.io.Serializable;
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10 | import java.util.Collection;
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11 | import java.util.Collections;
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12 | import java.util.Comparator;
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13 | import java.util.HashMap;
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14 | import java.util.LinkedList;
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15 | import java.util.List;
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16 | import java.util.Map;
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17 | import java.util.Set;
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18 | import java.util.SortedSet;
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19 | import java.util.TreeSet;
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20 |
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21 | import org.openstreetmap.josm.Main;
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22 | import org.openstreetmap.josm.command.ChangeCommand;
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23 | import org.openstreetmap.josm.command.Command;
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24 | import org.openstreetmap.josm.command.MoveCommand;
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25 | import org.openstreetmap.josm.command.SequenceCommand;
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26 | import org.openstreetmap.josm.data.coor.EastNorth;
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27 | import org.openstreetmap.josm.data.osm.Node;
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28 | import org.openstreetmap.josm.data.osm.OsmPrimitive;
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29 | import org.openstreetmap.josm.data.osm.Way;
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30 | import org.openstreetmap.josm.data.osm.WaySegment;
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31 | import org.openstreetmap.josm.data.projection.Projections;
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32 | import org.openstreetmap.josm.tools.Geometry;
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33 | import org.openstreetmap.josm.tools.MultiMap;
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34 | import org.openstreetmap.josm.tools.Shortcut;
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35 |
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36 | /**
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37 | * Action allowing to join a node to a nearby way, operating on two modes:<ul>
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38 | * <li><b>Join Node to Way</b>: Include a node into the nearest way segments. The node does not move</li>
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39 | * <li><b>Move Node onto Way</b>: Move the node onto the nearest way segments and include it</li>
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40 | * </ul>
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41 | * @since 466
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42 | */
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43 | public class JoinNodeWayAction extends JosmAction {
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44 |
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45 | protected final boolean joinWayToNode;
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46 |
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47 | protected JoinNodeWayAction(boolean joinWayToNode, String name, String iconName, String tooltip,
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48 | Shortcut shortcut, boolean registerInToolbar) {
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49 | super(name, iconName, tooltip, shortcut, registerInToolbar);
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50 | this.joinWayToNode = joinWayToNode;
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51 | }
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52 |
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53 | /**
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54 | * Constructs a Join Node to Way action.
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55 | * @return the Join Node to Way action
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56 | */
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57 | public static JoinNodeWayAction createJoinNodeToWayAction() {
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58 | JoinNodeWayAction action = new JoinNodeWayAction(false,
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59 | tr("Join Node to Way"), /* ICON */ "joinnodeway",
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60 | tr("Include a node into the nearest way segments"),
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61 | Shortcut.registerShortcut("tools:joinnodeway", tr("Tool: {0}", tr("Join Node to Way")),
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62 | KeyEvent.VK_J, Shortcut.DIRECT), true);
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63 | action.putValue("help", ht("/Action/JoinNodeWay"));
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64 | return action;
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65 | }
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66 |
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67 | /**
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68 | * Constructs a Move Node onto Way action.
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69 | * @return the Move Node onto Way action
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70 | */
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71 | public static JoinNodeWayAction createMoveNodeOntoWayAction() {
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72 | JoinNodeWayAction action = new JoinNodeWayAction(true,
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73 | tr("Move Node onto Way"), /* ICON*/ "movenodeontoway",
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74 | tr("Move the node onto the nearest way segments and include it"),
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75 | Shortcut.registerShortcut("tools:movenodeontoway", tr("Tool: {0}", tr("Move Node onto Way")),
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76 | KeyEvent.VK_N, Shortcut.DIRECT), true);
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77 | action.putValue("help", ht("/Action/MoveNodeWay"));
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78 | return action;
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79 | }
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80 |
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81 | @Override
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82 | public void actionPerformed(ActionEvent e) {
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83 | if (!isEnabled())
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84 | return;
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85 | Collection<Node> selectedNodes = getCurrentDataSet().getSelectedNodes();
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86 | Collection<Command> cmds = new LinkedList<>();
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87 | Map<Way, MultiMap<Integer, Node>> data = new HashMap<>();
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88 |
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89 | // If the user has selected some ways, only join the node to these.
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90 | boolean restrictToSelectedWays =
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91 | !getCurrentDataSet().getSelectedWays().isEmpty();
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92 |
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93 | // Planning phase: decide where we'll insert the nodes and put it all in "data"
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94 | for (Node node : selectedNodes) {
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95 | List<WaySegment> wss = Main.map.mapView.getNearestWaySegments(
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96 | Main.map.mapView.getPoint(node), OsmPrimitive.isSelectablePredicate);
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97 |
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98 | MultiMap<Way, Integer> insertPoints = new MultiMap<>();
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99 | for (WaySegment ws : wss) {
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100 | // Maybe cleaner to pass a "isSelected" predicate to getNearestWaySegments, but this is less invasive.
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101 | if (restrictToSelectedWays && !ws.way.isSelected()) {
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102 | continue;
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103 | }
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104 |
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105 | if (!ws.getFirstNode().equals(node) && !ws.getSecondNode().equals(node)) {
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106 | insertPoints.put(ws.way, ws.lowerIndex);
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107 | }
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108 | }
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109 | for (Map.Entry<Way, Set<Integer>> entry : insertPoints.entrySet()) {
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110 | final Way w = entry.getKey();
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111 | final Set<Integer> insertPointsForWay = entry.getValue();
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112 | for (int i : pruneSuccs(insertPointsForWay)) {
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113 | MultiMap<Integer, Node> innerMap;
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114 | if (!data.containsKey(w)) {
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115 | innerMap = new MultiMap<>();
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116 | } else {
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117 | innerMap = data.get(w);
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118 | }
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119 | innerMap.put(i, node);
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120 | data.put(w, innerMap);
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121 | }
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122 | }
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123 | }
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124 |
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125 | // Execute phase: traverse the structure "data" and finally put the nodes into place
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126 | for (Map.Entry<Way, MultiMap<Integer, Node>> entry : data.entrySet()) {
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127 | final Way w = entry.getKey();
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128 | final MultiMap<Integer, Node> innerEntry = entry.getValue();
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129 |
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130 | List<Integer> segmentIndexes = new LinkedList<>();
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131 | segmentIndexes.addAll(innerEntry.keySet());
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132 | Collections.sort(segmentIndexes, Collections.reverseOrder());
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133 |
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134 | List<Node> wayNodes = w.getNodes();
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135 | for (Integer segmentIndex : segmentIndexes) {
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136 | final Set<Node> nodesInSegment = innerEntry.get(segmentIndex);
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137 | if (joinWayToNode) {
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138 | for (Node node : nodesInSegment) {
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139 | EastNorth newPosition = Geometry.closestPointToSegment(w.getNode(segmentIndex).getEastNorth(),
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140 | w.getNode(segmentIndex+1).getEastNorth(),
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141 | node.getEastNorth());
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142 | MoveCommand c = new MoveCommand(node, Projections.inverseProject(newPosition));
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143 | // Avoid moving a given node several times at the same position in case of overlapping ways
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144 | if (!cmds.contains(c)) {
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145 | cmds.add(c);
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146 | }
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147 | }
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148 | }
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149 | List<Node> nodesToAdd = new LinkedList<>();
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150 | nodesToAdd.addAll(nodesInSegment);
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151 | Collections.sort(nodesToAdd, new NodeDistanceToRefNodeComparator(
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152 | w.getNode(segmentIndex), w.getNode(segmentIndex+1), !joinWayToNode));
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153 | wayNodes.addAll(segmentIndex + 1, nodesToAdd);
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154 | }
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155 | Way wnew = new Way(w);
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156 | wnew.setNodes(wayNodes);
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157 | cmds.add(new ChangeCommand(w, wnew));
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158 | }
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159 |
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160 | if (cmds.isEmpty()) return;
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161 | Main.main.undoRedo.add(new SequenceCommand(getValue(NAME).toString(), cmds));
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162 | Main.map.repaint();
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163 | }
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164 |
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165 | private static SortedSet<Integer> pruneSuccs(Collection<Integer> is) {
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166 | SortedSet<Integer> is2 = new TreeSet<>();
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167 | for (int i : is) {
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168 | if (!is2.contains(i - 1) && !is2.contains(i + 1)) {
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169 | is2.add(i);
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170 | }
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171 | }
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172 | return is2;
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173 | }
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174 |
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175 | /**
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176 | * Sorts collinear nodes by their distance to a common reference node.
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177 | */
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178 | private static class NodeDistanceToRefNodeComparator implements Comparator<Node>, Serializable {
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179 |
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180 | private static final long serialVersionUID = 1L;
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181 |
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182 | private final EastNorth refPoint;
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183 | private EastNorth refPoint2;
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184 | private final boolean projectToSegment;
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185 |
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186 | NodeDistanceToRefNodeComparator(Node referenceNode, Node referenceNode2, boolean projectFirst) {
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187 | refPoint = referenceNode.getEastNorth();
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188 | refPoint2 = referenceNode2.getEastNorth();
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189 | projectToSegment = projectFirst;
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190 | }
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191 |
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192 | @Override
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193 | public int compare(Node first, Node second) {
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194 | EastNorth firstPosition = first.getEastNorth();
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195 | EastNorth secondPosition = second.getEastNorth();
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196 |
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197 | if (projectToSegment) {
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198 | firstPosition = Geometry.closestPointToSegment(refPoint, refPoint2, firstPosition);
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199 | secondPosition = Geometry.closestPointToSegment(refPoint, refPoint2, secondPosition);
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200 | }
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201 |
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202 | double distanceFirst = firstPosition.distance(refPoint);
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203 | double distanceSecond = secondPosition.distance(refPoint);
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204 | double difference = distanceFirst - distanceSecond;
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205 |
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206 | if (difference > 0.0) return 1;
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207 | if (difference < 0.0) return -1;
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208 | return 0;
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209 | }
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210 | }
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211 |
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212 | @Override
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213 | protected void updateEnabledState() {
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214 | if (getCurrentDataSet() == null) {
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215 | setEnabled(false);
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216 | } else {
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217 | updateEnabledState(getCurrentDataSet().getSelected());
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218 | }
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219 | }
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220 |
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221 | @Override
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222 | protected void updateEnabledState(Collection<? extends OsmPrimitive> selection) {
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223 | setEnabled(selection != null && !selection.isEmpty());
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224 | }
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225 | }
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