1 | // License: GPL. Copyright 2007 by Immanuel Scholz and others
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2 | package org.openstreetmap.josm.data.osm;
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3 |
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4 | import org.openstreetmap.josm.Main;
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5 | import org.openstreetmap.josm.data.coor.EastNorth;
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6 | import org.openstreetmap.josm.data.coor.LatLon;
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7 | import org.openstreetmap.josm.data.osm.visitor.PrimitiveVisitor;
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8 | import org.openstreetmap.josm.data.osm.visitor.Visitor;
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9 | import org.openstreetmap.josm.data.projection.Projections;
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10 |
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11 | /**
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12 | * One node data, consisting of one world coordinate waypoint.
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13 | *
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14 | * @author imi
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15 | */
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16 | public final class Node extends OsmPrimitive implements INode {
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17 |
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18 | /*
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19 | * We "inline" lat/lon rather than using a LatLon-object => reduces memory footprint
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20 | */
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21 | private double lat = Double.NaN;
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22 | private double lon = Double.NaN;
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23 |
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24 | /*
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25 | * the cached projected coordinates
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26 | */
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27 | private double east = Double.NaN;
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28 | private double north = Double.NaN;
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29 |
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30 | private boolean isLatLonKnown() {
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31 | return !Double.isNaN(lat) && !Double.isNaN(lon);
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32 | }
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33 |
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34 | @Override
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35 | public final void setCoor(LatLon coor) {
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36 | if(coor != null){
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37 | updateCoor(coor, null);
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38 | }
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39 | }
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40 |
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41 | @Override
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42 | public final void setEastNorth(EastNorth eastNorth) {
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43 | if(eastNorth != null) {
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44 | updateCoor(null, eastNorth);
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45 | }
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46 | }
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47 |
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48 | private void updateCoor(LatLon coor, EastNorth eastNorth) {
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49 | if (getDataSet() != null) {
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50 | boolean locked = writeLock();
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51 | try {
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52 | getDataSet().fireNodeMoved(this, coor, eastNorth);
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53 | } finally {
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54 | writeUnlock(locked);
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55 | }
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56 | } else {
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57 | setCoorInternal(coor, eastNorth);
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58 | }
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59 | }
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60 |
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61 | @Override
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62 | public final LatLon getCoor() {
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63 | if (!isLatLonKnown()) return null;
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64 | return new LatLon(lat,lon);
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65 | }
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66 |
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67 | /**
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68 | * <p>Replies the projected east/north coordinates.</p>
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69 | *
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70 | * <p>Uses the {@link Main#getProjection() global projection} to project the lan/lon-coordinates.
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71 | * Internally caches the projected coordinates.</p>
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72 | *
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73 | * <p><strong>Caveat:</strong> doesn't listen to projection changes. Clients must
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74 | * {@link #invalidateEastNorthCache() invalidate the internal cache}.</p>
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75 | *
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76 | * <p>Replies {@code null} if this node doesn't know lat/lon-coordinates, i.e. because it is an incomplete node.
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77 | *
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78 | * @return the east north coordinates or {@code null}
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79 | * @see #invalidateEastNorthCache()
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80 | *
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81 | */
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82 | @Override
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83 | public final EastNorth getEastNorth() {
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84 | if (!isLatLonKnown()) return null;
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85 |
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86 | if (getDataSet() == null)
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87 | // there is no dataset that listens for projection changes
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88 | // and invalidates the cache, so we don't use the cache at all
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89 | return Projections.project(new LatLon(lat, lon));
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90 |
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91 | if (Double.isNaN(east) || Double.isNaN(north)) {
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92 | // projected coordinates haven't been calculated yet,
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93 | // so fill the cache of the projected node coordinates
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94 | EastNorth en = Projections.project(new LatLon(lat, lon));
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95 | this.east = en.east();
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96 | this.north = en.north();
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97 | }
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98 | return new EastNorth(east, north);
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99 | }
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100 |
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101 | /**
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102 | * To be used only by Dataset.reindexNode
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103 | */
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104 | protected void setCoorInternal(LatLon coor, EastNorth eastNorth) {
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105 | if (coor != null) {
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106 | this.lat = coor.lat();
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107 | this.lon = coor.lon();
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108 | invalidateEastNorthCache();
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109 | } else if (eastNorth != null) {
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110 | LatLon ll = Projections.inverseProject(eastNorth);
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111 | this.lat = ll.lat();
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112 | this.lon = ll.lon();
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113 | this.east = eastNorth.east();
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114 | this.north = eastNorth.north();
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115 | } else
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116 | throw new IllegalArgumentException();
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117 | }
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118 |
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119 | protected Node(long id, boolean allowNegative) {
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120 | super(id, allowNegative);
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121 | }
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122 |
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123 | /**
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124 | * Create a new local node.
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125 | *
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126 | */
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127 | public Node() {
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128 | this(0, false);
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129 | }
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130 |
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131 | /**
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132 | * Create an incomplete Node object
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133 | */
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134 | public Node(long id) {
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135 | super(id, false);
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136 | }
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137 |
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138 | /**
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139 | * Create new node
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140 | * @param id
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141 | * @param version
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142 | */
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143 | public Node(long id, int version) {
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144 | super(id, version, false);
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145 | }
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146 |
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147 | /**
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148 | *
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149 | * @param clone
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150 | * @param clearId If true, set version to 0 and id to new unique value
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151 | */
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152 | public Node(Node clone, boolean clearId) {
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153 | super(clone.getUniqueId(), true /* allow negative IDs */);
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154 | cloneFrom(clone);
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155 | if (clearId) {
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156 | clearOsmId();
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157 | }
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158 | }
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159 |
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160 | /**
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161 | * Create an identical clone of the argument (including the id)
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162 | */
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163 | public Node(Node clone) {
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164 | this(clone, false);
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165 | }
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166 |
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167 | public Node(LatLon latlon) {
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168 | super(0, false);
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169 | setCoor(latlon);
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170 | }
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171 |
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172 | public Node(EastNorth eastNorth) {
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173 | super(0, false);
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174 | setEastNorth(eastNorth);
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175 | }
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176 |
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177 | @Override
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178 | void setDataset(DataSet dataSet) {
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179 | super.setDataset(dataSet);
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180 | if (!isIncomplete() && (getCoor() == null || getEastNorth() == null))
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181 | throw new DataIntegrityProblemException("Complete node with null coordinates: " + toString() + get3892DebugInfo());
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182 | }
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183 |
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184 | @Override public void visit(Visitor visitor) {
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185 | visitor.visit(this);
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186 | }
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187 |
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188 | @Override public void visit(PrimitiveVisitor visitor) {
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189 | visitor.visit(this);
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190 | }
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191 |
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192 | @Override public void cloneFrom(OsmPrimitive osm) {
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193 | boolean locked = writeLock();
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194 | try {
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195 | super.cloneFrom(osm);
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196 | setCoor(((Node)osm).getCoor());
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197 | } finally {
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198 | writeUnlock(locked);
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199 | }
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200 | }
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201 |
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202 | /**
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203 | * Merges the technical and semantical attributes from <code>other</code> onto this.
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204 | *
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205 | * Both this and other must be new, or both must be assigned an OSM ID. If both this and <code>other</code>
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206 | * have an assigend OSM id, the IDs have to be the same.
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207 | *
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208 | * @param other the other primitive. Must not be null.
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209 | * @throws IllegalArgumentException thrown if other is null.
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210 | * @throws DataIntegrityProblemException thrown if either this is new and other is not, or other is new and this is not
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211 | * @throws DataIntegrityProblemException thrown if other is new and other.getId() != this.getId()
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212 | */
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213 | @Override
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214 | public void mergeFrom(OsmPrimitive other) {
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215 | boolean locked = writeLock();
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216 | try {
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217 | super.mergeFrom(other);
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218 | if (!other.isIncomplete()) {
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219 | setCoor(((Node)other).getCoor());
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220 | }
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221 | } finally {
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222 | writeUnlock(locked);
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223 | }
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224 | }
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225 |
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226 | @Override public void load(PrimitiveData data) {
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227 | boolean locked = writeLock();
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228 | try {
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229 | super.load(data);
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230 | setCoor(((NodeData)data).getCoor());
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231 | } finally {
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232 | writeUnlock(locked);
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233 | }
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234 | }
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235 |
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236 | @Override public NodeData save() {
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237 | NodeData data = new NodeData();
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238 | saveCommonAttributes(data);
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239 | if (!isIncomplete()) {
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240 | data.setCoor(getCoor());
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241 | }
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242 | return data;
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243 | }
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244 |
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245 | @Override public String toString() {
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246 | String coorDesc = isLatLonKnown() ? "lat="+lat+",lon="+lon : "";
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247 | return "{Node id=" + getUniqueId() + " version=" + getVersion() + " " + getFlagsAsString() + " " + coorDesc+"}";
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248 | }
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249 |
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250 | @Override
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251 | public boolean hasEqualSemanticAttributes(OsmPrimitive other) {
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252 | if (other == null || ! (other instanceof Node) )
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253 | return false;
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254 | if (! super.hasEqualSemanticAttributes(other))
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255 | return false;
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256 | Node n = (Node)other;
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257 | LatLon coor = getCoor();
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258 | LatLon otherCoor = n.getCoor();
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259 | if (coor == null && otherCoor == null)
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260 | return true;
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261 | else if (coor != null && otherCoor != null)
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262 | return coor.equalsEpsilon(otherCoor);
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263 | else
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264 | return false;
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265 | }
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266 |
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267 | @Override
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268 | public int compareTo(OsmPrimitive o) {
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269 | return o instanceof Node ? Long.valueOf(getUniqueId()).compareTo(o.getUniqueId()) : 1;
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270 | }
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271 |
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272 | @Override
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273 | public String getDisplayName(NameFormatter formatter) {
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274 | return formatter.format(this);
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275 | }
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276 |
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277 | @Override
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278 | public OsmPrimitiveType getType() {
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279 | return OsmPrimitiveType.NODE;
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280 | }
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281 |
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282 | @Override
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283 | public BBox getBBox() {
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284 | return new BBox(this);
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285 | }
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286 |
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287 | @Override
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288 | public void updatePosition() {
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289 | }
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290 |
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291 | public boolean isConnectionNode() {
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292 | return isReferredByWays(2);
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293 | }
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294 |
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295 | public String get3892DebugInfo() {
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296 | StringBuilder builder = new StringBuilder();
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297 | builder.append("Unexpected error. Please report it to http://josm.openstreetmap.de/ticket/3892\n");
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298 | builder.append(toString());
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299 | builder.append("\n");
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300 | if (isLatLonKnown()) {
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301 | builder.append("Coor is null\n");
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302 | } else {
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303 | builder.append(String.format("EastNorth: %s\n", getEastNorth()));
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304 | builder.append(Main.getProjection());
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305 | builder.append("\n");
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306 | }
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307 |
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308 | return builder.toString();
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309 | }
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310 |
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311 | /**
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312 | * Invoke to invalidate the internal cache of projected east/north coordinates.
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313 | * Coordinates are reprojected on demand when the {@link #getEastNorth()} is invoked
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314 | * next time.
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315 | */
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316 | public void invalidateEastNorthCache() {
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317 | this.east = Double.NaN;
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318 | this.north = Double.NaN;
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319 | }
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320 | }
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