1 | // License: GPL. For details, see LICENSE file.
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2 | package org.openstreetmap.josm.data.osm.visitor.paint.relations;
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3 |
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4 | import java.awt.geom.Path2D;
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5 | import java.awt.geom.Path2D.Double;
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6 | import java.awt.geom.PathIterator;
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7 | import java.awt.geom.Point2D;
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8 | import java.awt.geom.Rectangle2D;
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9 | import java.util.ArrayList;
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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.HashSet;
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13 | import java.util.Iterator;
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14 | import java.util.List;
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15 | import java.util.Set;
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16 |
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17 | import org.openstreetmap.josm.Main;
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18 | import org.openstreetmap.josm.data.Preferences.PreferenceChangeEvent;
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19 | import org.openstreetmap.josm.data.Preferences.PreferenceChangedListener;
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20 | import org.openstreetmap.josm.data.osm.DataSet;
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21 | import org.openstreetmap.josm.data.osm.Node;
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22 | import org.openstreetmap.josm.data.osm.OsmPrimitiveType;
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23 | import org.openstreetmap.josm.data.osm.Relation;
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24 | import org.openstreetmap.josm.data.osm.RelationMember;
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25 | import org.openstreetmap.josm.data.osm.Way;
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26 | import org.openstreetmap.josm.data.osm.event.NodeMovedEvent;
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27 | import org.openstreetmap.josm.data.osm.event.WayNodesChangedEvent;
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28 | import org.openstreetmap.josm.data.osm.visitor.paint.relations.Multipolygon.PolyData.Intersection;
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29 |
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30 | public class Multipolygon {
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31 | /** preference key for a collection of roles which indicate that the respective member belongs to an
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32 | * <em>outer</em> polygon. Default is <tt>outer</tt>.
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33 | */
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34 | static public final String PREF_KEY_OUTER_ROLES = "mappaint.multipolygon.outer.roles";
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35 | /** preference key for collection of role prefixes which indicate that the respective
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36 | * member belongs to an <em>outer</em> polygon. Default is empty.
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37 | */
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38 | static public final String PREF_KEY_OUTER_ROLE_PREFIXES = "mappaint.multipolygon.outer.role-prefixes";
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39 | /** preference key for a collection of roles which indicate that the respective member belongs to an
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40 | * <em>inner</em> polygon. Default is <tt>inner</tt>.
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41 | */
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42 | static public final String PREF_KEY_INNER_ROLES = "mappaint.multipolygon.inner.roles";
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43 | /** preference key for collection of role prefixes which indicate that the respective
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44 | * member belongs to an <em>inner</em> polygon. Default is empty.
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45 | */
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46 | static public final String PREF_KEY_INNER_ROLE_PREFIXES = "mappaint.multipolygon.inner.role-prefixes";
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47 |
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48 | /**
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49 | * <p>Kind of strategy object which is responsible for deciding whether a given
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50 | * member role indicates that the member belongs to an <em>outer</em> or an
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51 | * <em>inner</em> polygon.</p>
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52 | *
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53 | * <p>The decision is taken based on preference settings, see the four preference keys
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54 | * above.</p>
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55 | *
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56 | */
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57 | private static class MultipolygonRoleMatcher implements PreferenceChangedListener{
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58 | private final List<String> outerExactRoles = new ArrayList<String>();
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59 | private final List<String> outerRolePrefixes = new ArrayList<String>();
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60 | private final List<String> innerExactRoles = new ArrayList<String>();
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61 | private final List<String> innerRolePrefixes = new ArrayList<String>();
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62 |
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63 | private void initDefaults() {
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64 | outerExactRoles.clear();
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65 | outerRolePrefixes.clear();
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66 | innerExactRoles.clear();
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67 | innerRolePrefixes.clear();
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68 | outerExactRoles.add("outer");
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69 | innerExactRoles.add("inner");
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70 | }
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71 |
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72 | private void setNormalized(Collection<String> literals, List<String> target){
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73 | target.clear();
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74 | for(String l: literals) {
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75 | if (l == null) {
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76 | continue;
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77 | }
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78 | l = l.trim();
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79 | if (!target.contains(l)) {
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80 | target.add(l);
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81 | }
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82 | }
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83 | }
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84 |
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85 | private void initFromPreferences() {
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86 | initDefaults();
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87 | if (Main.pref == null) return;
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88 | Collection<String> literals;
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89 | literals = Main.pref.getCollection(PREF_KEY_OUTER_ROLES);
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90 | if (literals != null && !literals.isEmpty()){
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91 | setNormalized(literals, outerExactRoles);
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92 | }
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93 | literals = Main.pref.getCollection(PREF_KEY_OUTER_ROLE_PREFIXES);
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94 | if (literals != null && !literals.isEmpty()){
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95 | setNormalized(literals, outerRolePrefixes);
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96 | }
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97 | literals = Main.pref.getCollection(PREF_KEY_INNER_ROLES);
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98 | if (literals != null && !literals.isEmpty()){
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99 | setNormalized(literals, innerExactRoles);
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100 | }
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101 | literals = Main.pref.getCollection(PREF_KEY_INNER_ROLE_PREFIXES);
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102 | if (literals != null && !literals.isEmpty()){
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103 | setNormalized(literals, innerRolePrefixes);
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104 | }
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105 | }
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106 |
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107 | @Override
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108 | public void preferenceChanged(PreferenceChangeEvent evt) {
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109 | if (PREF_KEY_INNER_ROLE_PREFIXES.equals(evt.getKey()) ||
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110 | PREF_KEY_INNER_ROLES.equals(evt.getKey()) ||
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111 | PREF_KEY_OUTER_ROLE_PREFIXES.equals(evt.getKey()) ||
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112 | PREF_KEY_OUTER_ROLES.equals(evt.getKey())){
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113 | initFromPreferences();
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114 | }
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115 | }
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116 |
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117 | public boolean isOuterRole(String role){
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118 | if (role == null) return false;
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119 | for (String candidate: outerExactRoles) {
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120 | if (role.equals(candidate)) return true;
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121 | }
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122 | for (String candidate: outerRolePrefixes) {
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123 | if (role.startsWith(candidate)) return true;
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124 | }
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125 | return false;
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126 | }
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127 |
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128 | public boolean isInnerRole(String role){
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129 | if (role == null) return false;
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130 | for (String candidate: innerExactRoles) {
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131 | if (role.equals(candidate)) return true;
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132 | }
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133 | for (String candidate: innerRolePrefixes) {
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134 | if (role.startsWith(candidate)) return true;
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135 | }
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136 | return false;
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137 | }
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138 | }
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139 |
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140 | /*
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141 | * Init a private global matcher object which will listen to preference
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142 | * changes.
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143 | */
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144 | private static MultipolygonRoleMatcher roleMatcher;
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145 | private static MultipolygonRoleMatcher getMultipolygonRoleMatcher() {
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146 | if (roleMatcher == null) {
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147 | roleMatcher = new MultipolygonRoleMatcher();
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148 | if (Main.pref != null){
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149 | roleMatcher.initFromPreferences();
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150 | Main.pref.addPreferenceChangeListener(roleMatcher);
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151 | }
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152 | }
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153 | return roleMatcher;
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154 | }
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155 |
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156 | public static class JoinedWay {
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157 | private final List<Node> nodes;
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158 | private final Collection<Long> wayIds;
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159 | private final boolean selected;
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160 |
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161 | public JoinedWay(List<Node> nodes, Collection<Long> wayIds, boolean selected) {
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162 | this.nodes = nodes;
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163 | this.wayIds = wayIds;
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164 | this.selected = selected;
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165 | }
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166 |
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167 | public List<Node> getNodes() {
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168 | return nodes;
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169 | }
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170 |
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171 | public Collection<Long> getWayIds() {
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172 | return wayIds;
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173 | }
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174 |
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175 | public boolean isSelected() {
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176 | return selected;
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177 | }
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178 |
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179 | public boolean isClosed() {
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180 | return nodes.isEmpty() || nodes.get(nodes.size() - 1).equals(nodes.get(0));
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181 | }
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182 | }
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183 |
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184 | public static class PolyData {
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185 | public enum Intersection {INSIDE, OUTSIDE, CROSSING}
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186 |
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187 | private final Path2D.Double poly;
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188 | public boolean selected;
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189 | private Rectangle2D bounds;
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190 | private final Collection<Long> wayIds;
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191 | private final List<Node> nodes;
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192 | private final List<PolyData> inners;
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193 |
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194 | public PolyData(Way closedWay) {
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195 | this(closedWay.getNodes(), closedWay.isSelected(), Collections.singleton(closedWay.getUniqueId()));
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196 | }
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197 |
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198 | public PolyData(JoinedWay joinedWay) {
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199 | this(joinedWay.getNodes(), joinedWay.isSelected(), joinedWay.getWayIds());
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200 | }
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201 |
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202 | private PolyData(List<Node> nodes, boolean selected, Collection<Long> wayIds) {
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203 | this.wayIds = Collections.unmodifiableCollection(wayIds);
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204 | this.nodes = new ArrayList<Node>(nodes);
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205 | this.selected = selected;
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206 | this.inners = new ArrayList<Multipolygon.PolyData>();
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207 | this.poly = new Path2D.Double();
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208 | this.poly.setWindingRule(Path2D.WIND_EVEN_ODD);
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209 | buildPoly();
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210 | }
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211 |
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212 | private void buildPoly() {
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213 | boolean initial = true;
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214 | for (Node n : nodes) {
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215 | Point2D p = n.getEastNorth();
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216 | if (p != null) {
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217 | if (initial) {
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218 | poly.moveTo(p.getX(), p.getY());
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219 | initial = false;
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220 | } else {
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221 | poly.lineTo(p.getX(), p.getY());
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222 | }
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223 | }
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224 | }
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225 | if (!initial) { // fix #7593
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226 | poly.closePath();
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227 | }
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228 | for (PolyData inner : inners) {
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229 | appendInner(inner.poly);
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230 | }
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231 | }
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232 |
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233 | public PolyData(PolyData copy) {
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234 | this.selected = copy.selected;
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235 | this.poly = (Double) copy.poly.clone();
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236 | this.wayIds = Collections.unmodifiableCollection(copy.wayIds);
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237 | this.nodes = new ArrayList<Node>(copy.nodes);
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238 | this.inners = new ArrayList<Multipolygon.PolyData>(copy.inners);
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239 | }
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240 |
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241 | public Intersection contains(Path2D.Double p) {
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242 | int contains = 0;
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243 | int total = 0;
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244 | double[] coords = new double[6];
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245 | for (PathIterator it = p.getPathIterator(null); !it.isDone(); it.next()) {
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246 | switch (it.currentSegment(coords)) {
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247 | case PathIterator.SEG_MOVETO:
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248 | case PathIterator.SEG_LINETO:
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249 | if (poly.contains(coords[0], coords[1])) {
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250 | contains++;
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251 | }
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252 | total++;
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253 | }
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254 | }
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255 | if (contains == total) return Intersection.INSIDE;
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256 | if (contains == 0) return Intersection.OUTSIDE;
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257 | return Intersection.CROSSING;
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258 | }
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259 |
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260 | public void addInner(PolyData inner) {
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261 | inners.add(inner);
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262 | appendInner(inner.poly);
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263 | }
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264 |
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265 | private void appendInner(Path2D.Double inner) {
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266 | poly.append(inner.getPathIterator(null), false);
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267 | }
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268 |
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269 | public Path2D.Double get() {
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270 | return poly;
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271 | }
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272 |
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273 | public Rectangle2D getBounds() {
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274 | if (bounds == null) {
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275 | bounds = poly.getBounds2D();
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276 | }
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277 | return bounds;
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278 | }
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279 |
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280 | public Collection<Long> getWayIds() {
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281 | return wayIds;
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282 | }
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283 |
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284 | private void resetNodes(DataSet dataSet) {
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285 | if (!nodes.isEmpty()) {
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286 | DataSet ds = dataSet;
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287 | // Find DataSet (can be null for several nodes when undoing nodes creation, see #7162)
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288 | for (Iterator<Node> it = nodes.iterator(); it.hasNext() && ds == null; ) {
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289 | ds = it.next().getDataSet();
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290 | }
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291 | nodes.clear();
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292 | if (ds == null) {
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293 | // DataSet still not found. This should not happen, but a warning does no harm
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294 | System.err.println("Warning: DataSet not found while resetting nodes in Multipolygon. This should not happen, you may report it to JOSM developers.");
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295 | } else if (wayIds.size() == 1) {
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296 | Way w = (Way) ds.getPrimitiveById(wayIds.iterator().next(), OsmPrimitiveType.WAY);
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297 | nodes.addAll(w.getNodes());
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298 | } else {
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299 | List<Way> waysToJoin = new ArrayList<Way>();
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300 | for (Iterator<Long> it = wayIds.iterator(); it.hasNext(); ) {
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301 | Way w = (Way) ds.getPrimitiveById(it.next(), OsmPrimitiveType.WAY);
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302 | if (w != null && w.getNodesCount() > 0) { // fix #7173 (empty ways on purge)
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303 | waysToJoin.add(w);
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304 | }
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305 | }
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306 | nodes.addAll(joinWays(waysToJoin).iterator().next().getNodes());
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307 | }
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308 | resetPoly();
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309 | }
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310 | }
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311 |
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312 | private void resetPoly() {
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313 | poly.reset();
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314 | buildPoly();
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315 | bounds = null;
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316 | }
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317 |
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318 | public void nodeMoved(NodeMovedEvent event) {
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319 | final Node n = event.getNode();
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320 | boolean innerChanged = false;
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321 | for (PolyData inner : inners) {
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322 | if (inner.nodes.contains(n)) {
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323 | inner.resetPoly();
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324 | innerChanged = true;
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325 | }
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326 | }
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327 | if (nodes.contains(n) || innerChanged) {
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328 | resetPoly();
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329 | }
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330 | }
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331 |
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332 | public void wayNodesChanged(WayNodesChangedEvent event) {
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333 | final Long wayId = event.getChangedWay().getUniqueId();
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334 | boolean innerChanged = false;
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335 | for (PolyData inner : inners) {
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336 | if (inner.wayIds.contains(wayId)) {
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337 | inner.resetNodes(event.getDataset());
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338 | innerChanged = true;
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339 | }
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340 | }
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341 | if (wayIds.contains(wayId) || innerChanged) {
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342 | resetNodes(event.getDataset());
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343 | }
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344 | }
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345 | }
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346 |
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347 | private final List<Way> innerWays = new ArrayList<Way>();
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348 | private final List<Way> outerWays = new ArrayList<Way>();
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349 | private final List<PolyData> innerPolygons = new ArrayList<PolyData>();
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350 | private final List<PolyData> outerPolygons = new ArrayList<PolyData>();
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351 | private final List<PolyData> combinedPolygons = new ArrayList<PolyData>();
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352 |
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353 | private boolean incomplete;
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354 |
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355 | public Multipolygon(Relation r) {
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356 | load(r);
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357 | }
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358 |
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359 | private void load(Relation r) {
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360 | MultipolygonRoleMatcher matcher = getMultipolygonRoleMatcher();
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361 |
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362 | // Fill inner and outer list with valid ways
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363 | for (RelationMember m : r.getMembers()) {
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364 | if (m.getMember().isIncomplete()) {
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365 | this.incomplete = true;
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366 | } else if (m.getMember().isDrawable()) {
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367 | if (m.isWay()) {
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368 | Way w = m.getWay();
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369 |
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370 | if (w.getNodesCount() < 2) {
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371 | continue;
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372 | }
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373 |
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374 | if (matcher.isInnerRole(m.getRole())) {
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375 | innerWays.add(w);
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376 | } else if (matcher.isOuterRole(m.getRole())) {
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377 | outerWays.add(w);
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378 | } else if (!m.hasRole()) {
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379 | outerWays.add(w);
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380 | } // Remaining roles ignored
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381 | } // Non ways ignored
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382 | }
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383 | }
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384 |
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385 | createPolygons(innerWays, innerPolygons);
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386 | createPolygons(outerWays, outerPolygons);
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387 | if (!outerPolygons.isEmpty()) {
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388 | addInnerToOuters();
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389 | }
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390 | }
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391 |
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392 | public final boolean isIncomplete() {
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393 | return incomplete;
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394 | }
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395 |
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396 | private void createPolygons(List<Way> ways, List<PolyData> result) {
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397 | List<Way> waysToJoin = new ArrayList<Way>();
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398 | for (Way way: ways) {
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399 | if (way.isClosed()) {
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400 | result.add(new PolyData(way));
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401 | } else {
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402 | waysToJoin.add(way);
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403 | }
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404 | }
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405 |
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406 | for (JoinedWay jw: joinWays(waysToJoin)) {
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407 | result.add(new PolyData(jw));
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408 | }
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409 | }
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410 |
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411 | public static Collection<JoinedWay> joinWays(Collection<Way> waysToJoin)
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412 | {
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413 | final Collection<JoinedWay> result = new ArrayList<JoinedWay>();
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414 | final Way[] joinArray = waysToJoin.toArray(new Way[waysToJoin.size()]);
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415 | int left = waysToJoin.size();
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416 | while (left > 0) {
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417 | Way w = null;
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418 | boolean selected = false;
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419 | List<Node> nodes = null;
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420 | Set<Long> wayIds = new HashSet<Long>();
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421 | boolean joined = true;
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422 | while (joined && left > 0) {
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423 | joined = false;
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424 | for (int i = 0; i < joinArray.length && left != 0; ++i) {
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425 | if (joinArray[i] != null) {
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426 | Way c = joinArray[i];
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427 | if (w == null) {
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428 | w = c;
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429 | selected = w.isSelected();
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430 | joinArray[i] = null;
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431 | --left;
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432 | } else {
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433 | int mode = 0;
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434 | int cl = c.getNodesCount()-1;
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435 | int nl;
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436 | if (nodes == null) {
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437 | nl = w.getNodesCount()-1;
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438 | if (w.getNode(nl) == c.getNode(0)) {
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439 | mode = 21;
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440 | } else if (w.getNode(nl) == c.getNode(cl)) {
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441 | mode = 22;
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442 | } else if (w.getNode(0) == c.getNode(0)) {
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443 | mode = 11;
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444 | } else if (w.getNode(0) == c.getNode(cl)) {
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445 | mode = 12;
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446 | }
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447 | } else {
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448 | nl = nodes.size()-1;
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449 | if (nodes.get(nl) == c.getNode(0)) {
|
---|
450 | mode = 21;
|
---|
451 | } else if (nodes.get(0) == c.getNode(cl)) {
|
---|
452 | mode = 12;
|
---|
453 | } else if (nodes.get(0) == c.getNode(0)) {
|
---|
454 | mode = 11;
|
---|
455 | } else if (nodes.get(nl) == c.getNode(cl)) {
|
---|
456 | mode = 22;
|
---|
457 | }
|
---|
458 | }
|
---|
459 | if (mode != 0) {
|
---|
460 | joinArray[i] = null;
|
---|
461 | joined = true;
|
---|
462 | if (c.isSelected()) {
|
---|
463 | selected = true;
|
---|
464 | }
|
---|
465 | --left;
|
---|
466 | if (nodes == null) {
|
---|
467 | nodes = w.getNodes();
|
---|
468 | wayIds.add(w.getUniqueId());
|
---|
469 | }
|
---|
470 | nodes.remove((mode == 21 || mode == 22) ? nl : 0);
|
---|
471 | if (mode == 21) {
|
---|
472 | nodes.addAll(c.getNodes());
|
---|
473 | } else if (mode == 12) {
|
---|
474 | nodes.addAll(0, c.getNodes());
|
---|
475 | } else if (mode == 22) {
|
---|
476 | for (Node node : c.getNodes()) {
|
---|
477 | nodes.add(nl, node);
|
---|
478 | }
|
---|
479 | } else /* mode == 11 */ {
|
---|
480 | for (Node node : c.getNodes()) {
|
---|
481 | nodes.add(0, node);
|
---|
482 | }
|
---|
483 | }
|
---|
484 | wayIds.add(c.getUniqueId());
|
---|
485 | }
|
---|
486 | }
|
---|
487 | }
|
---|
488 | } /* for(i = ... */
|
---|
489 | } /* while(joined) */
|
---|
490 |
|
---|
491 | if (nodes == null) {
|
---|
492 | nodes = w.getNodes();
|
---|
493 | wayIds.add(w.getUniqueId());
|
---|
494 | }
|
---|
495 |
|
---|
496 | result.add(new JoinedWay(nodes, wayIds, selected));
|
---|
497 | } /* while(left != 0) */
|
---|
498 |
|
---|
499 | return result;
|
---|
500 | }
|
---|
501 |
|
---|
502 | public PolyData findOuterPolygon(PolyData inner, List<PolyData> outerPolygons) {
|
---|
503 |
|
---|
504 | // First try to test only bbox, use precise testing only if we don't get unique result
|
---|
505 | Rectangle2D innerBox = inner.getBounds();
|
---|
506 | PolyData insidePolygon = null;
|
---|
507 | PolyData intersectingPolygon = null;
|
---|
508 | int insideCount = 0;
|
---|
509 | int intersectingCount = 0;
|
---|
510 |
|
---|
511 | for (PolyData outer: outerPolygons) {
|
---|
512 | if (outer.getBounds().contains(innerBox)) {
|
---|
513 | insidePolygon = outer;
|
---|
514 | insideCount++;
|
---|
515 | } else if (outer.getBounds().intersects(innerBox)) {
|
---|
516 | intersectingPolygon = outer;
|
---|
517 | intersectingCount++;
|
---|
518 | }
|
---|
519 | }
|
---|
520 |
|
---|
521 | if (insideCount == 1)
|
---|
522 | return insidePolygon;
|
---|
523 | else if (intersectingCount == 1)
|
---|
524 | return intersectingPolygon;
|
---|
525 |
|
---|
526 | PolyData result = null;
|
---|
527 | for (PolyData combined : outerPolygons) {
|
---|
528 | Intersection c = combined.contains(inner.poly);
|
---|
529 | if (c != Intersection.OUTSIDE)
|
---|
530 | {
|
---|
531 | if (result == null || result.contains(combined.poly) != Intersection.INSIDE) {
|
---|
532 | result = combined;
|
---|
533 | }
|
---|
534 | }
|
---|
535 | }
|
---|
536 | return result;
|
---|
537 | }
|
---|
538 |
|
---|
539 | private void addInnerToOuters() {
|
---|
540 |
|
---|
541 | if (innerPolygons.isEmpty()) {
|
---|
542 | combinedPolygons.addAll(outerPolygons);
|
---|
543 | } else if (outerPolygons.size() == 1) {
|
---|
544 | PolyData combinedOuter = new PolyData(outerPolygons.get(0));
|
---|
545 | for (PolyData inner: innerPolygons) {
|
---|
546 | combinedOuter.addInner(inner);
|
---|
547 | }
|
---|
548 | combinedPolygons.add(combinedOuter);
|
---|
549 | } else {
|
---|
550 | for (PolyData outer: outerPolygons) {
|
---|
551 | combinedPolygons.add(new PolyData(outer));
|
---|
552 | }
|
---|
553 |
|
---|
554 | for (PolyData pdInner: innerPolygons) {
|
---|
555 | PolyData o = findOuterPolygon(pdInner, combinedPolygons);
|
---|
556 | if (o == null) {
|
---|
557 | o = outerPolygons.get(0);
|
---|
558 | }
|
---|
559 | o.addInner(pdInner);
|
---|
560 | }
|
---|
561 | }
|
---|
562 |
|
---|
563 | // Clear inner and outer polygons to reduce memory footprint
|
---|
564 | innerPolygons.clear();
|
---|
565 | outerPolygons.clear();
|
---|
566 | }
|
---|
567 |
|
---|
568 | public List<Way> getOuterWays() {
|
---|
569 | return outerWays;
|
---|
570 | }
|
---|
571 |
|
---|
572 | public List<Way> getInnerWays() {
|
---|
573 | return innerWays;
|
---|
574 | }
|
---|
575 | /*
|
---|
576 | public List<PolyData> getInnerPolygons() {
|
---|
577 | return innerPolygons;
|
---|
578 | }
|
---|
579 |
|
---|
580 | public List<PolyData> getOuterPolygons() {
|
---|
581 | return outerPolygons;
|
---|
582 | }
|
---|
583 | */
|
---|
584 | public List<PolyData> getCombinedPolygons() {
|
---|
585 | return combinedPolygons;
|
---|
586 | }
|
---|
587 | }
|
---|