1 | // License: GPL. For details, see LICENSE file.
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2 | package org.openstreetmap.josm.gui;
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3 |
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4 | import java.awt.Cursor;
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5 | import java.awt.Point;
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6 | import java.awt.Rectangle;
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7 | import java.awt.event.ComponentAdapter;
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8 | import java.awt.event.ComponentEvent;
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9 | import java.awt.event.HierarchyEvent;
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10 | import java.awt.event.HierarchyListener;
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11 | import java.awt.geom.AffineTransform;
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12 | import java.awt.geom.Point2D;
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13 | import java.nio.charset.StandardCharsets;
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14 | import java.text.NumberFormat;
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15 | import java.util.ArrayList;
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16 | import java.util.Collection;
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17 | import java.util.Collections;
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18 | import java.util.Date;
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19 | import java.util.HashSet;
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20 | import java.util.LinkedList;
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21 | import java.util.List;
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22 | import java.util.Map;
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23 | import java.util.Map.Entry;
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24 | import java.util.Set;
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25 | import java.util.Stack;
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26 | import java.util.TreeMap;
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27 | import java.util.concurrent.CopyOnWriteArrayList;
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28 | import java.util.function.Predicate;
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29 | import java.util.zip.CRC32;
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30 |
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31 | import javax.swing.JComponent;
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32 | import javax.swing.SwingUtilities;
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33 |
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34 | import org.openstreetmap.josm.data.Bounds;
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35 | import org.openstreetmap.josm.data.ProjectionBounds;
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36 | import org.openstreetmap.josm.data.SystemOfMeasurement;
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37 | import org.openstreetmap.josm.data.ViewportData;
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38 | import org.openstreetmap.josm.data.coor.EastNorth;
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39 | import org.openstreetmap.josm.data.coor.ILatLon;
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40 | import org.openstreetmap.josm.data.coor.LatLon;
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41 | import org.openstreetmap.josm.data.osm.BBox;
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42 | import org.openstreetmap.josm.data.osm.DataSet;
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43 | import org.openstreetmap.josm.data.osm.Node;
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44 | import org.openstreetmap.josm.data.osm.OsmPrimitive;
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45 | import org.openstreetmap.josm.data.osm.Relation;
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46 | import org.openstreetmap.josm.data.osm.Way;
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47 | import org.openstreetmap.josm.data.osm.WaySegment;
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48 | import org.openstreetmap.josm.data.osm.visitor.BoundingXYVisitor;
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49 | import org.openstreetmap.josm.data.preferences.BooleanProperty;
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50 | import org.openstreetmap.josm.data.preferences.DoubleProperty;
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51 | import org.openstreetmap.josm.data.preferences.IntegerProperty;
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52 | import org.openstreetmap.josm.data.projection.Projection;
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53 | import org.openstreetmap.josm.data.projection.ProjectionChangeListener;
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54 | import org.openstreetmap.josm.data.projection.ProjectionRegistry;
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55 | import org.openstreetmap.josm.gui.help.Helpful;
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56 | import org.openstreetmap.josm.gui.layer.NativeScaleLayer;
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57 | import org.openstreetmap.josm.gui.layer.NativeScaleLayer.Scale;
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58 | import org.openstreetmap.josm.gui.layer.NativeScaleLayer.ScaleList;
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59 | import org.openstreetmap.josm.gui.mappaint.MapPaintStyles;
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60 | import org.openstreetmap.josm.gui.mappaint.mapcss.MapCSSStyleSource;
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61 | import org.openstreetmap.josm.gui.util.CursorManager;
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62 | import org.openstreetmap.josm.gui.util.GuiHelper;
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63 | import org.openstreetmap.josm.spi.preferences.Config;
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64 | import org.openstreetmap.josm.tools.Logging;
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65 | import org.openstreetmap.josm.tools.Utils;
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66 |
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67 | /**
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68 | * A component that can be navigated by a {@link MapMover}. Used as map view and for the
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69 | * zoomer in the download dialog.
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70 | *
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71 | * @author imi
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72 | * @since 41
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73 | */
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74 | public class NavigatableComponent extends JComponent implements Helpful {
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75 |
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76 | private static final double ALIGNMENT_EPSILON = 1e-3;
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77 |
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78 | /**
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79 | * Interface to notify listeners of the change of the zoom area.
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80 | * @since 10600 (functional interface)
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81 | */
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82 | @FunctionalInterface
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83 | public interface ZoomChangeListener {
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84 | /**
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85 | * Method called when the zoom area has changed.
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86 | */
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87 | void zoomChanged();
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88 | }
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89 |
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90 | /**
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91 | * To determine if a primitive is currently selectable.
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92 | */
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93 | public transient Predicate<OsmPrimitive> isSelectablePredicate = prim -> {
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94 | if (!prim.isSelectable()) return false;
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95 | // if it isn't displayed on screen, you cannot click on it
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96 | MapCSSStyleSource.STYLE_SOURCE_LOCK.readLock().lock();
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97 | try {
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98 | return !MapPaintStyles.getStyles().get(prim, getDist100Pixel(), this).isEmpty();
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99 | } finally {
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100 | MapCSSStyleSource.STYLE_SOURCE_LOCK.readLock().unlock();
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101 | }
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102 | };
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103 |
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104 | /** Snap distance */
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105 | public static final IntegerProperty PROP_SNAP_DISTANCE = new IntegerProperty("mappaint.node.snap-distance", 10);
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106 | /** Zoom steps to get double scale */
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107 | public static final DoubleProperty PROP_ZOOM_RATIO = new DoubleProperty("zoom.ratio", 2.0);
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108 | /** Divide intervals between native resolution levels to smaller steps if they are much larger than zoom ratio */
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109 | public static final BooleanProperty PROP_ZOOM_INTERMEDIATE_STEPS = new BooleanProperty("zoom.intermediate-steps", true);
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110 | /** scale follows native resolution of layer status when layer is created */
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111 | public static final BooleanProperty PROP_ZOOM_SCALE_FOLLOW_NATIVE_RES_AT_LOAD = new BooleanProperty(
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112 | "zoom.scale-follow-native-resolution-at-load", true);
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113 |
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114 | /**
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115 | * The layer which scale is set to.
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116 | */
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117 | private transient NativeScaleLayer nativeScaleLayer;
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118 |
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119 | /**
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120 | * the zoom listeners
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121 | */
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122 | private static final CopyOnWriteArrayList<ZoomChangeListener> zoomChangeListeners = new CopyOnWriteArrayList<>();
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123 |
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124 | /**
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125 | * Removes a zoom change listener
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126 | *
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127 | * @param listener the listener. Ignored if null or already absent
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128 | */
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129 | public static void removeZoomChangeListener(ZoomChangeListener listener) {
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130 | zoomChangeListeners.remove(listener);
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131 | }
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132 |
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133 | /**
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134 | * Adds a zoom change listener
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135 | *
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136 | * @param listener the listener. Ignored if null or already registered.
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137 | */
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138 | public static void addZoomChangeListener(ZoomChangeListener listener) {
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139 | if (listener != null) {
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140 | zoomChangeListeners.addIfAbsent(listener);
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141 | }
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142 | }
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143 |
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144 | protected static void fireZoomChanged() {
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145 | GuiHelper.runInEDTAndWait(() -> {
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146 | for (ZoomChangeListener l : zoomChangeListeners) {
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147 | l.zoomChanged();
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148 | }
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149 | });
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150 | }
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151 |
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152 | // The only events that may move/resize this map view are window movements or changes to the map view size.
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153 | // We can clean this up more by only recalculating the state on repaint.
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154 | private final transient HierarchyListener hierarchyListener = e -> {
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155 | long interestingFlags = HierarchyEvent.ANCESTOR_MOVED | HierarchyEvent.SHOWING_CHANGED;
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156 | if ((e.getChangeFlags() & interestingFlags) != 0) {
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157 | updateLocationState();
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158 | }
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159 | };
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160 |
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161 | private final transient ComponentAdapter componentListener = new ComponentAdapter() {
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162 | @Override
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163 | public void componentShown(ComponentEvent e) {
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164 | updateLocationState();
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165 | }
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166 |
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167 | @Override
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168 | public void componentResized(ComponentEvent e) {
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169 | updateLocationState();
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170 | }
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171 | };
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172 |
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173 | protected transient ViewportData initialViewport;
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174 |
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175 | protected final transient CursorManager cursorManager = new CursorManager(this);
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176 |
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177 | /**
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178 | * The current state (scale, center, ...) of this map view.
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179 | */
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180 | private transient MapViewState state;
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181 |
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182 | /**
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183 | * Main uses weak link to store this, so we need to keep a reference.
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184 | */
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185 | private final ProjectionChangeListener projectionChangeListener = (oldValue, newValue) -> fixProjection();
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186 |
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187 | /**
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188 | * Constructs a new {@code NavigatableComponent}.
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189 | */
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190 | public NavigatableComponent() {
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191 | setLayout(null);
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192 | state = MapViewState.createDefaultState(getWidth(), getHeight());
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193 | ProjectionRegistry.addProjectionChangeListener(projectionChangeListener);
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194 | }
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195 |
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196 | @Override
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197 | public void addNotify() {
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198 | updateLocationState();
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199 | addHierarchyListener(hierarchyListener);
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200 | addComponentListener(componentListener);
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201 | super.addNotify();
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202 | }
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203 |
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204 | @Override
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205 | public void removeNotify() {
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206 | removeHierarchyListener(hierarchyListener);
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207 | removeComponentListener(componentListener);
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208 | super.removeNotify();
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209 | }
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210 |
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211 | /**
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212 | * Choose a layer that scale will be snap to its native scales.
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213 | * @param nativeScaleLayer layer to which scale will be snapped
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214 | */
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215 | public void setNativeScaleLayer(NativeScaleLayer nativeScaleLayer) {
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216 | this.nativeScaleLayer = nativeScaleLayer;
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217 | zoomTo(getCenter(), scaleRound(getScale()));
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218 | repaint();
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219 | }
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220 |
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221 | /**
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222 | * Replies the layer which scale is set to.
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223 | * @return the current scale layer (may be null)
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224 | */
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225 | public NativeScaleLayer getNativeScaleLayer() {
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226 | return nativeScaleLayer;
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227 | }
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228 |
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229 | /**
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230 | * Get a new scale that is zoomed in from previous scale
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231 | * and snapped to selected native scale layer.
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232 | * @return new scale
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233 | */
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234 | public double scaleZoomIn() {
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235 | return scaleZoomManyTimes(-1);
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236 | }
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237 |
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238 | /**
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239 | * Get a new scale that is zoomed out from previous scale
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240 | * and snapped to selected native scale layer.
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241 | * @return new scale
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242 | */
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243 | public double scaleZoomOut() {
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244 | return scaleZoomManyTimes(1);
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245 | }
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246 |
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247 | /**
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248 | * Get a new scale that is zoomed in/out a number of times
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249 | * from previous scale and snapped to selected native scale layer.
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250 | * @param times count of zoom operations, negative means zoom in
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251 | * @return new scale
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252 | */
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253 | public double scaleZoomManyTimes(int times) {
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254 | if (nativeScaleLayer != null) {
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255 | ScaleList scaleList = nativeScaleLayer.getNativeScales();
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256 | if (scaleList != null) {
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257 | if (PROP_ZOOM_INTERMEDIATE_STEPS.get()) {
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258 | scaleList = scaleList.withIntermediateSteps(PROP_ZOOM_RATIO.get());
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259 | }
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260 | Scale s = scaleList.scaleZoomTimes(getScale(), PROP_ZOOM_RATIO.get(), times);
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261 | return s != null ? s.getScale() : 0;
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262 | }
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263 | }
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264 | return getScale() * Math.pow(PROP_ZOOM_RATIO.get(), times);
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265 | }
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266 |
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267 | /**
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268 | * Get a scale snapped to native resolutions, use round method.
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269 | * It gives nearest step from scale list.
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270 | * Use round method.
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271 | * @param scale to snap
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272 | * @return snapped scale
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273 | */
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274 | public double scaleRound(double scale) {
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275 | return scaleSnap(scale, false);
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276 | }
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277 |
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278 | /**
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279 | * Get a scale snapped to native resolutions.
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280 | * It gives nearest lower step from scale list, usable to fit objects.
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281 | * @param scale to snap
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282 | * @return snapped scale
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283 | */
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284 | public double scaleFloor(double scale) {
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285 | return scaleSnap(scale, true);
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286 | }
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287 |
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288 | /**
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289 | * Get a scale snapped to native resolutions.
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290 | * It gives nearest lower step from scale list, usable to fit objects.
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291 | * @param scale to snap
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292 | * @param floor use floor instead of round, set true when fitting view to objects
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293 | * @return new scale
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294 | */
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295 | public double scaleSnap(double scale, boolean floor) {
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296 | if (nativeScaleLayer != null) {
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297 | ScaleList scaleList = nativeScaleLayer.getNativeScales();
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298 | if (scaleList != null) {
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299 | if (PROP_ZOOM_INTERMEDIATE_STEPS.get()) {
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300 | scaleList = scaleList.withIntermediateSteps(PROP_ZOOM_RATIO.get());
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301 | }
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302 | Scale snapscale = scaleList.getSnapScale(scale, PROP_ZOOM_RATIO.get(), floor);
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303 | return snapscale != null ? snapscale.getScale() : scale;
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304 | }
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305 | }
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306 | return scale;
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307 | }
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308 |
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309 | /**
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310 | * Zoom in current view. Use configured zoom step and scaling settings.
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311 | */
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312 | public void zoomIn() {
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313 | zoomTo(state.getCenter().getEastNorth(), scaleZoomIn());
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314 | }
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315 |
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316 | /**
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317 | * Zoom out current view. Use configured zoom step and scaling settings.
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318 | */
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319 | public void zoomOut() {
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320 | zoomTo(state.getCenter().getEastNorth(), scaleZoomOut());
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321 | }
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322 |
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323 | protected void updateLocationState() {
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324 | if (isVisibleOnScreen()) {
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325 | state = state.usingLocation(this);
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326 | }
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327 | }
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328 |
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329 | protected boolean isVisibleOnScreen() {
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330 | return SwingUtilities.getWindowAncestor(this) != null && isShowing();
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331 | }
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332 |
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333 | /**
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334 | * Changes the projection settings used for this map view.
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335 | * <p>
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336 | * Made public temporarily, will be made private later.
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337 | */
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338 | public void fixProjection() {
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339 | state = state.usingProjection(ProjectionRegistry.getProjection());
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340 | repaint();
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341 | }
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342 |
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343 | /**
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344 | * Gets the current view state. This includes the scale, the current view area and the position.
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345 | * @return The current state.
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346 | */
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347 | public MapViewState getState() {
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348 | return state;
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349 | }
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350 |
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351 | /**
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352 | * Returns the text describing the given distance in the current system of measurement.
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353 | * @param dist The distance in metres.
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354 | * @return the text describing the given distance in the current system of measurement.
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355 | * @since 3406
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356 | */
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357 | public static String getDistText(double dist) {
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358 | return SystemOfMeasurement.getSystemOfMeasurement().getDistText(dist);
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359 | }
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360 |
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361 | /**
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362 | * Returns the text describing the given distance in the current system of measurement.
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363 | * @param dist The distance in metres
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364 | * @param format A {@link NumberFormat} to format the area value
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365 | * @param threshold Values lower than this {@code threshold} are displayed as {@code "< [threshold]"}
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366 | * @return the text describing the given distance in the current system of measurement.
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367 | * @since 7135
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368 | */
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369 | public static String getDistText(final double dist, final NumberFormat format, final double threshold) {
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370 | return SystemOfMeasurement.getSystemOfMeasurement().getDistText(dist, format, threshold);
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371 | }
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372 |
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373 | /**
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374 | * Returns the text describing the distance in meter that correspond to 100 px on screen.
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375 | * @return the text describing the distance in meter that correspond to 100 px on screen
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376 | */
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377 | public String getDist100PixelText() {
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378 | return getDistText(getDist100Pixel());
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379 | }
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380 |
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381 | /**
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382 | * Get the distance in meter that correspond to 100 px on screen.
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383 | *
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384 | * @return the distance in meter that correspond to 100 px on screen
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385 | */
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386 | public double getDist100Pixel() {
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387 | return getDist100Pixel(true);
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388 | }
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389 |
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390 | /**
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391 | * Get the distance in meter that correspond to 100 px on screen.
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392 | *
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393 | * @param alwaysPositive if true, makes sure the return value is always
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394 | * > 0. (Two points 100 px apart can appear to be identical if the user
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395 | * has zoomed out a lot and the projection code does something funny.)
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396 | * @return the distance in meter that correspond to 100 px on screen
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397 | */
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398 | public double getDist100Pixel(boolean alwaysPositive) {
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399 | int w = getWidth()/2;
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400 | int h = getHeight()/2;
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401 | LatLon ll1 = getLatLon(w-50, h);
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402 | LatLon ll2 = getLatLon(w+50, h);
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403 | double gcd = ll1.greatCircleDistance(ll2);
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404 | if (alwaysPositive && gcd <= 0)
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405 | return 0.1;
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406 | return gcd;
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407 | }
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408 |
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409 | /**
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410 | * Returns the current center of the viewport.
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411 | *
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412 | * (Use {@link #zoomTo(EastNorth)} to the change the center.)
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413 | *
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414 | * @return the current center of the viewport
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415 | */
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416 | public EastNorth getCenter() {
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417 | return state.getCenter().getEastNorth();
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418 | }
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419 |
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420 | /**
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421 | * Returns the current scale.
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422 | *
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423 | * In east/north units per pixel.
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424 | *
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425 | * @return the current scale
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426 | */
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427 | public double getScale() {
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428 | return state.getScale();
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429 | }
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430 |
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431 | /**
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432 | * @param x X-Pixelposition to get coordinate from
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433 | * @param y Y-Pixelposition to get coordinate from
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434 | *
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435 | * @return Geographic coordinates from a specific pixel coordination on the screen.
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436 | */
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437 | public EastNorth getEastNorth(int x, int y) {
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438 | return state.getForView(x, y).getEastNorth();
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439 | }
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440 |
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441 | /**
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442 | * Determines the projection bounds of view area.
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443 | * @return the projection bounds of view area
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444 | */
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445 | public ProjectionBounds getProjectionBounds() {
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446 | return getState().getViewArea().getProjectionBounds();
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447 | }
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448 |
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449 | /* FIXME: replace with better method - used by MapSlider */
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450 | public ProjectionBounds getMaxProjectionBounds() {
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451 | Bounds b = getProjection().getWorldBoundsLatLon();
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452 | return new ProjectionBounds(getProjection().latlon2eastNorth(b.getMin()),
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453 | getProjection().latlon2eastNorth(b.getMax()));
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454 | }
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455 |
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456 | /* FIXME: replace with better method - used by Main to reset Bounds when projection changes, don't use otherwise */
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457 | public Bounds getRealBounds() {
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458 | return getState().getViewArea().getCornerBounds();
|
---|
459 | }
|
---|
460 |
|
---|
461 | /**
|
---|
462 | * Returns unprojected geographic coordinates for a specific pixel position on the screen.
|
---|
463 | * @param x X-Pixelposition to get coordinate from
|
---|
464 | * @param y Y-Pixelposition to get coordinate from
|
---|
465 | *
|
---|
466 | * @return Geographic unprojected coordinates from a specific pixel position on the screen.
|
---|
467 | */
|
---|
468 | public LatLon getLatLon(int x, int y) {
|
---|
469 | return getProjection().eastNorth2latlon(getEastNorth(x, y));
|
---|
470 | }
|
---|
471 |
|
---|
472 | /**
|
---|
473 | * Returns unprojected geographic coordinates for a specific pixel position on the screen.
|
---|
474 | * @param x X-Pixelposition to get coordinate from
|
---|
475 | * @param y Y-Pixelposition to get coordinate from
|
---|
476 | *
|
---|
477 | * @return Geographic unprojected coordinates from a specific pixel position on the screen.
|
---|
478 | */
|
---|
479 | public LatLon getLatLon(double x, double y) {
|
---|
480 | return getLatLon((int) x, (int) y);
|
---|
481 | }
|
---|
482 |
|
---|
483 | /**
|
---|
484 | * Determines the projection bounds of given rectangle.
|
---|
485 | * @param r rectangle
|
---|
486 | * @return the projection bounds of {@code r}
|
---|
487 | */
|
---|
488 | public ProjectionBounds getProjectionBounds(Rectangle r) {
|
---|
489 | return getState().getViewArea(r).getProjectionBounds();
|
---|
490 | }
|
---|
491 |
|
---|
492 | /**
|
---|
493 | * @param r rectangle
|
---|
494 | * @return Minimum bounds that will cover rectangle
|
---|
495 | */
|
---|
496 | public Bounds getLatLonBounds(Rectangle r) {
|
---|
497 | return ProjectionRegistry.getProjection().getLatLonBoundsBox(getProjectionBounds(r));
|
---|
498 | }
|
---|
499 |
|
---|
500 | /**
|
---|
501 | * Creates an affine transform that is used to convert the east/north coordinates to view coordinates.
|
---|
502 | * @return The affine transform.
|
---|
503 | */
|
---|
504 | public AffineTransform getAffineTransform() {
|
---|
505 | return getState().getAffineTransform();
|
---|
506 | }
|
---|
507 |
|
---|
508 | /**
|
---|
509 | * Return the point on the screen where this Coordinate would be.
|
---|
510 | * @param p The point, where this geopoint would be drawn.
|
---|
511 | * @return The point on screen where "point" would be drawn, relative to the own top/left.
|
---|
512 | */
|
---|
513 | public Point2D getPoint2D(EastNorth p) {
|
---|
514 | if (null == p)
|
---|
515 | return new Point();
|
---|
516 | return getState().getPointFor(p).getInView();
|
---|
517 | }
|
---|
518 |
|
---|
519 | /**
|
---|
520 | * Return the point on the screen where this Coordinate would be.
|
---|
521 | *
|
---|
522 | * Alternative: {@link #getState()}, then {@link MapViewState#getPointFor(ILatLon)}
|
---|
523 | * @param latlon The point, where this geopoint would be drawn.
|
---|
524 | * @return The point on screen where "point" would be drawn, relative to the own top/left.
|
---|
525 | */
|
---|
526 | public Point2D getPoint2D(ILatLon latlon) {
|
---|
527 | if (latlon == null) {
|
---|
528 | return new Point();
|
---|
529 | } else {
|
---|
530 | return getPoint2D(latlon.getEastNorth(ProjectionRegistry.getProjection()));
|
---|
531 | }
|
---|
532 | }
|
---|
533 |
|
---|
534 | /**
|
---|
535 | * Return the point on the screen where this Coordinate would be.
|
---|
536 | *
|
---|
537 | * Alternative: {@link #getState()}, then {@link MapViewState#getPointFor(ILatLon)}
|
---|
538 | * @param latlon The point, where this geopoint would be drawn.
|
---|
539 | * @return The point on screen where "point" would be drawn, relative to the own top/left.
|
---|
540 | */
|
---|
541 | public Point2D getPoint2D(LatLon latlon) {
|
---|
542 | return getPoint2D((ILatLon) latlon);
|
---|
543 | }
|
---|
544 |
|
---|
545 | /**
|
---|
546 | * Return the point on the screen where this Node would be.
|
---|
547 | *
|
---|
548 | * Alternative: {@link #getState()}, then {@link MapViewState#getPointFor(ILatLon)}
|
---|
549 | * @param n The node, where this geopoint would be drawn.
|
---|
550 | * @return The point on screen where "node" would be drawn, relative to the own top/left.
|
---|
551 | */
|
---|
552 | public Point2D getPoint2D(Node n) {
|
---|
553 | return getPoint2D(n.getEastNorth());
|
---|
554 | }
|
---|
555 |
|
---|
556 | /**
|
---|
557 | * looses precision, may overflow (depends on p and current scale)
|
---|
558 | * @param p east/north
|
---|
559 | * @return point
|
---|
560 | * @see #getPoint2D(EastNorth)
|
---|
561 | */
|
---|
562 | public Point getPoint(EastNorth p) {
|
---|
563 | Point2D d = getPoint2D(p);
|
---|
564 | return new Point((int) d.getX(), (int) d.getY());
|
---|
565 | }
|
---|
566 |
|
---|
567 | /**
|
---|
568 | * looses precision, may overflow (depends on p and current scale)
|
---|
569 | * @param latlon lat/lon
|
---|
570 | * @return point
|
---|
571 | * @see #getPoint2D(LatLon)
|
---|
572 | * @since 12725
|
---|
573 | */
|
---|
574 | public Point getPoint(ILatLon latlon) {
|
---|
575 | Point2D d = getPoint2D(latlon);
|
---|
576 | return new Point((int) d.getX(), (int) d.getY());
|
---|
577 | }
|
---|
578 |
|
---|
579 | /**
|
---|
580 | * looses precision, may overflow (depends on p and current scale)
|
---|
581 | * @param latlon lat/lon
|
---|
582 | * @return point
|
---|
583 | * @see #getPoint2D(LatLon)
|
---|
584 | */
|
---|
585 | public Point getPoint(LatLon latlon) {
|
---|
586 | return getPoint((ILatLon) latlon);
|
---|
587 | }
|
---|
588 |
|
---|
589 | /**
|
---|
590 | * looses precision, may overflow (depends on p and current scale)
|
---|
591 | * @param n node
|
---|
592 | * @return point
|
---|
593 | * @see #getPoint2D(Node)
|
---|
594 | */
|
---|
595 | public Point getPoint(Node n) {
|
---|
596 | Point2D d = getPoint2D(n);
|
---|
597 | return new Point((int) d.getX(), (int) d.getY());
|
---|
598 | }
|
---|
599 |
|
---|
600 | /**
|
---|
601 | * Zoom to the given coordinate and scale.
|
---|
602 | *
|
---|
603 | * @param newCenter The center x-value (easting) to zoom to.
|
---|
604 | * @param newScale The scale to use.
|
---|
605 | */
|
---|
606 | public void zoomTo(EastNorth newCenter, double newScale) {
|
---|
607 | zoomTo(newCenter, newScale, false);
|
---|
608 | }
|
---|
609 |
|
---|
610 | /**
|
---|
611 | * Zoom to the given coordinate and scale.
|
---|
612 | *
|
---|
613 | * @param center The center x-value (easting) to zoom to.
|
---|
614 | * @param scale The scale to use.
|
---|
615 | * @param initial true if this call initializes the viewport.
|
---|
616 | */
|
---|
617 | public void zoomTo(EastNorth center, double scale, boolean initial) {
|
---|
618 | Bounds b = getProjection().getWorldBoundsLatLon();
|
---|
619 | ProjectionBounds pb = getProjection().getWorldBoundsBoxEastNorth();
|
---|
620 | double newScale = scale;
|
---|
621 | int width = getWidth();
|
---|
622 | int height = getHeight();
|
---|
623 |
|
---|
624 | // make sure, the center of the screen is within projection bounds
|
---|
625 | double east = center.east();
|
---|
626 | double north = center.north();
|
---|
627 | east = Math.max(east, pb.minEast);
|
---|
628 | east = Math.min(east, pb.maxEast);
|
---|
629 | north = Math.max(north, pb.minNorth);
|
---|
630 | north = Math.min(north, pb.maxNorth);
|
---|
631 | EastNorth newCenter = new EastNorth(east, north);
|
---|
632 |
|
---|
633 | // don't zoom out too much, the world bounds should be at least
|
---|
634 | // half the size of the screen
|
---|
635 | double pbHeight = pb.maxNorth - pb.minNorth;
|
---|
636 | if (height > 0 && 2 * pbHeight < height * newScale) {
|
---|
637 | double newScaleH = 2 * pbHeight / height;
|
---|
638 | double pbWidth = pb.maxEast - pb.minEast;
|
---|
639 | if (width > 0 && 2 * pbWidth < width * newScale) {
|
---|
640 | double newScaleW = 2 * pbWidth / width;
|
---|
641 | newScale = Math.max(newScaleH, newScaleW);
|
---|
642 | }
|
---|
643 | }
|
---|
644 |
|
---|
645 | // don't zoom in too much, minimum: 100 px = 1 cm
|
---|
646 | LatLon ll1 = getLatLon(width / 2 - 50, height / 2);
|
---|
647 | LatLon ll2 = getLatLon(width / 2 + 50, height / 2);
|
---|
648 | if (ll1.isValid() && ll2.isValid() && b.contains(ll1) && b.contains(ll2)) {
|
---|
649 | double dm = ll1.greatCircleDistance(ll2);
|
---|
650 | double den = 100 * getScale();
|
---|
651 | double scaleMin = 0.01 * den / dm / 100;
|
---|
652 | if (newScale < scaleMin && !Double.isInfinite(scaleMin)) {
|
---|
653 | newScale = scaleMin;
|
---|
654 | }
|
---|
655 | }
|
---|
656 |
|
---|
657 | // snap scale to imagery if needed
|
---|
658 | newScale = scaleRound(newScale);
|
---|
659 |
|
---|
660 | // Align to the pixel grid:
|
---|
661 | // This is a sub-pixel correction to ensure consistent drawing at a certain scale.
|
---|
662 | // For example take 2 nodes, that have a distance of exactly 2.6 pixels.
|
---|
663 | // Depending on the offset, the distance in rounded or truncated integer
|
---|
664 | // pixels will be 2 or 3. It is preferable to have a consistent distance
|
---|
665 | // and not switch back and forth as the viewport moves. This can be achieved by
|
---|
666 | // locking an arbitrary point to integer pixel coordinates. (Here the EastNorth
|
---|
667 | // origin is used as reference point.)
|
---|
668 | // Note that the normal right mouse button drag moves the map by integer pixel
|
---|
669 | // values, so it is not an issue in this case. It only shows when zooming
|
---|
670 | // in & back out, etc.
|
---|
671 | MapViewState mvs = getState().usingScale(newScale);
|
---|
672 | mvs = mvs.movedTo(mvs.getCenter(), newCenter);
|
---|
673 | Point2D enOrigin = mvs.getPointFor(new EastNorth(0, 0)).getInView();
|
---|
674 | // as a result of the alignment, it is common to round "half integer" values
|
---|
675 | // like 1.49999, which is numerically unstable; add small epsilon to resolve this
|
---|
676 | Point2D enOriginAligned = new Point2D.Double(
|
---|
677 | Math.round(enOrigin.getX()) + ALIGNMENT_EPSILON,
|
---|
678 | Math.round(enOrigin.getY()) + ALIGNMENT_EPSILON);
|
---|
679 | EastNorth enShift = mvs.getForView(enOriginAligned.getX(), enOriginAligned.getY()).getEastNorth();
|
---|
680 | newCenter = newCenter.subtract(enShift);
|
---|
681 |
|
---|
682 | EastNorth oldCenter = getCenter();
|
---|
683 | if (!newCenter.equals(oldCenter) || !Utils.equalsEpsilon(getScale(), newScale)) {
|
---|
684 | if (!initial) {
|
---|
685 | pushZoomUndo(oldCenter, getScale());
|
---|
686 | }
|
---|
687 | zoomNoUndoTo(newCenter, newScale, initial);
|
---|
688 | }
|
---|
689 | }
|
---|
690 |
|
---|
691 | /**
|
---|
692 | * Zoom to the given coordinate without adding to the zoom undo buffer.
|
---|
693 | *
|
---|
694 | * @param newCenter The center x-value (easting) to zoom to.
|
---|
695 | * @param newScale The scale to use.
|
---|
696 | * @param initial true if this call initializes the viewport.
|
---|
697 | */
|
---|
698 | private void zoomNoUndoTo(EastNorth newCenter, double newScale, boolean initial) {
|
---|
699 | if (!Utils.equalsEpsilon(getScale(), newScale)) {
|
---|
700 | state = state.usingScale(newScale);
|
---|
701 | }
|
---|
702 | if (!newCenter.equals(getCenter())) {
|
---|
703 | state = state.movedTo(state.getCenter(), newCenter);
|
---|
704 | }
|
---|
705 | if (!initial) {
|
---|
706 | repaint();
|
---|
707 | fireZoomChanged();
|
---|
708 | }
|
---|
709 | }
|
---|
710 |
|
---|
711 | /**
|
---|
712 | * Zoom to given east/north.
|
---|
713 | * @param newCenter new center coordinates
|
---|
714 | */
|
---|
715 | public void zoomTo(EastNorth newCenter) {
|
---|
716 | zoomTo(newCenter, getScale());
|
---|
717 | }
|
---|
718 |
|
---|
719 | /**
|
---|
720 | * Zoom to given lat/lon.
|
---|
721 | * @param newCenter new center coordinates
|
---|
722 | * @since 12725
|
---|
723 | */
|
---|
724 | public void zoomTo(ILatLon newCenter) {
|
---|
725 | zoomTo(getProjection().latlon2eastNorth(newCenter));
|
---|
726 | }
|
---|
727 |
|
---|
728 | /**
|
---|
729 | * Zoom to given lat/lon.
|
---|
730 | * @param newCenter new center coordinates
|
---|
731 | */
|
---|
732 | public void zoomTo(LatLon newCenter) {
|
---|
733 | zoomTo((ILatLon) newCenter);
|
---|
734 | }
|
---|
735 |
|
---|
736 | /**
|
---|
737 | * Thread class for smooth scrolling. Made a separate class, so we can safely terminate it.
|
---|
738 | */
|
---|
739 | private class SmoothScrollThread extends Thread {
|
---|
740 | private boolean doStop;
|
---|
741 | private final EastNorth oldCenter = getCenter();
|
---|
742 | private final EastNorth finalNewCenter;
|
---|
743 | private final long frames;
|
---|
744 | private final long sleepTime;
|
---|
745 |
|
---|
746 | SmoothScrollThread(EastNorth newCenter, long frameNum, int fps) {
|
---|
747 | super("smooth-scroller");
|
---|
748 | finalNewCenter = newCenter;
|
---|
749 | frames = frameNum;
|
---|
750 | sleepTime = 1000L / fps;
|
---|
751 | }
|
---|
752 |
|
---|
753 | @Override
|
---|
754 | public void run() {
|
---|
755 | try {
|
---|
756 | for (int i = 0; i < frames && !doStop; i++) {
|
---|
757 | zoomTo(oldCenter.interpolate(finalNewCenter, (1.0+i) / frames));
|
---|
758 | Thread.sleep(sleepTime);
|
---|
759 | }
|
---|
760 | } catch (InterruptedException ex) {
|
---|
761 | Logging.warn("Interruption during smooth scrolling");
|
---|
762 | }
|
---|
763 | }
|
---|
764 |
|
---|
765 | public void stopIt() {
|
---|
766 | doStop = true;
|
---|
767 | }
|
---|
768 | }
|
---|
769 |
|
---|
770 | /**
|
---|
771 | * Create a thread that moves the viewport to the given center in an animated fashion.
|
---|
772 | * @param newCenter new east/north center
|
---|
773 | */
|
---|
774 | public void smoothScrollTo(EastNorth newCenter) {
|
---|
775 | final EastNorth oldCenter = getCenter();
|
---|
776 | if (!newCenter.equals(oldCenter)) {
|
---|
777 | final int fps = Config.getPref().getInt("smooth.scroll.fps", 20); // animation frames per second
|
---|
778 | final int speed = Config.getPref().getInt("smooth.scroll.speed", 1500); // milliseconds for full-screen-width pan
|
---|
779 | final int maxtime = Config.getPref().getInt("smooth.scroll.maxtime", 5000); // milliseconds maximum scroll time
|
---|
780 | final double distance = newCenter.distance(oldCenter) / getScale();
|
---|
781 | double milliseconds = distance / getWidth() * speed;
|
---|
782 | if (milliseconds > maxtime) { // prevent overlong scroll time, speed up if necessary
|
---|
783 | milliseconds = maxtime;
|
---|
784 | }
|
---|
785 |
|
---|
786 | ThreadGroup group = Thread.currentThread().getThreadGroup();
|
---|
787 | Thread[] threads = new Thread[group.activeCount()];
|
---|
788 | group.enumerate(threads, true);
|
---|
789 | boolean stopped = false;
|
---|
790 | for (Thread t : threads) {
|
---|
791 | if (t instanceof SmoothScrollThread) {
|
---|
792 | ((SmoothScrollThread) t).stopIt();
|
---|
793 | /* handle this case outside in case there is more than one smooth thread */
|
---|
794 | stopped = true;
|
---|
795 | }
|
---|
796 | }
|
---|
797 | if (stopped && milliseconds > maxtime/2.0) { /* we aren't fast enough, skip smooth */
|
---|
798 | Logging.warn("Skip smooth scrolling");
|
---|
799 | zoomTo(newCenter);
|
---|
800 | } else {
|
---|
801 | long frames = Math.round(milliseconds * fps / 1000);
|
---|
802 | if (frames <= 1)
|
---|
803 | zoomTo(newCenter);
|
---|
804 | else
|
---|
805 | new SmoothScrollThread(newCenter, frames, fps).start();
|
---|
806 | }
|
---|
807 | }
|
---|
808 | }
|
---|
809 |
|
---|
810 | public void zoomManyTimes(double x, double y, int times) {
|
---|
811 | double oldScale = getScale();
|
---|
812 | double newScale = scaleZoomManyTimes(times);
|
---|
813 | zoomToFactor(x, y, newScale / oldScale);
|
---|
814 | }
|
---|
815 |
|
---|
816 | public void zoomToFactor(double x, double y, double factor) {
|
---|
817 | double newScale = getScale()*factor;
|
---|
818 | EastNorth oldUnderMouse = getState().getForView(x, y).getEastNorth();
|
---|
819 | MapViewState newState = getState().usingScale(newScale);
|
---|
820 | newState = newState.movedTo(newState.getForView(x, y), oldUnderMouse);
|
---|
821 | zoomTo(newState.getCenter().getEastNorth(), newScale);
|
---|
822 | }
|
---|
823 |
|
---|
824 | public void zoomToFactor(EastNorth newCenter, double factor) {
|
---|
825 | zoomTo(newCenter, getScale()*factor);
|
---|
826 | }
|
---|
827 |
|
---|
828 | public void zoomToFactor(double factor) {
|
---|
829 | zoomTo(getCenter(), getScale()*factor);
|
---|
830 | }
|
---|
831 |
|
---|
832 | /**
|
---|
833 | * Zoom to given projection bounds.
|
---|
834 | * @param box new projection bounds
|
---|
835 | */
|
---|
836 | public void zoomTo(ProjectionBounds box) {
|
---|
837 | double newScale = box.getScale(getWidth(), getHeight());
|
---|
838 | newScale = scaleFloor(newScale);
|
---|
839 | zoomTo(box.getCenter(), newScale);
|
---|
840 | }
|
---|
841 |
|
---|
842 | /**
|
---|
843 | * Zoom to given bounds.
|
---|
844 | * @param box new bounds
|
---|
845 | */
|
---|
846 | public void zoomTo(Bounds box) {
|
---|
847 | zoomTo(new ProjectionBounds(getProjection().latlon2eastNorth(box.getMin()),
|
---|
848 | getProjection().latlon2eastNorth(box.getMax())));
|
---|
849 | }
|
---|
850 |
|
---|
851 | /**
|
---|
852 | * Zoom to given viewport data.
|
---|
853 | * @param viewport new viewport data
|
---|
854 | */
|
---|
855 | public void zoomTo(ViewportData viewport) {
|
---|
856 | if (viewport == null) return;
|
---|
857 | if (viewport.getBounds() != null) {
|
---|
858 | if (!viewport.getBounds().hasExtend()) {
|
---|
859 | // see #18623
|
---|
860 | BoundingXYVisitor v = new BoundingXYVisitor();
|
---|
861 | v.visit(viewport.getBounds());
|
---|
862 | zoomTo(v);
|
---|
863 | } else {
|
---|
864 | zoomTo(viewport.getBounds());
|
---|
865 | }
|
---|
866 |
|
---|
867 | } else {
|
---|
868 | zoomTo(viewport.getCenter(), viewport.getScale(), true);
|
---|
869 | }
|
---|
870 | }
|
---|
871 |
|
---|
872 | /**
|
---|
873 | * Set the new dimension to the view.
|
---|
874 | * @param v box to zoom to
|
---|
875 | */
|
---|
876 | public void zoomTo(BoundingXYVisitor v) {
|
---|
877 | if (v == null) {
|
---|
878 | v = new BoundingXYVisitor();
|
---|
879 | }
|
---|
880 | if (v.getBounds() == null) {
|
---|
881 | v.visit(getProjection().getWorldBoundsLatLon());
|
---|
882 | }
|
---|
883 |
|
---|
884 | // increase bbox. This is required
|
---|
885 | // especially if the bbox contains one single node, but helpful
|
---|
886 | // in most other cases as well.
|
---|
887 | // Do not zoom if the current scale covers the selection, #16706
|
---|
888 | final MapView mapView = MainApplication.getMap().mapView;
|
---|
889 | final double mapScale = mapView.getScale();
|
---|
890 | final double minScale = v.getBounds().getScale(mapView.getWidth(), mapView.getHeight());
|
---|
891 | v.enlargeBoundingBoxLogarithmically();
|
---|
892 | final double maxScale = v.getBounds().getScale(mapView.getWidth(), mapView.getHeight());
|
---|
893 | if (minScale <= mapScale && mapScale < maxScale) {
|
---|
894 | mapView.zoomTo(v.getBounds().getCenter());
|
---|
895 | } else {
|
---|
896 | zoomTo(v.getBounds());
|
---|
897 | }
|
---|
898 | }
|
---|
899 |
|
---|
900 | private static class ZoomData {
|
---|
901 | private final EastNorth center;
|
---|
902 | private final double scale;
|
---|
903 |
|
---|
904 | ZoomData(EastNorth center, double scale) {
|
---|
905 | this.center = center;
|
---|
906 | this.scale = scale;
|
---|
907 | }
|
---|
908 |
|
---|
909 | public EastNorth getCenterEastNorth() {
|
---|
910 | return center;
|
---|
911 | }
|
---|
912 |
|
---|
913 | public double getScale() {
|
---|
914 | return scale;
|
---|
915 | }
|
---|
916 | }
|
---|
917 |
|
---|
918 | private final transient Stack<ZoomData> zoomUndoBuffer = new Stack<>();
|
---|
919 | private final transient Stack<ZoomData> zoomRedoBuffer = new Stack<>();
|
---|
920 | private Date zoomTimestamp = new Date();
|
---|
921 |
|
---|
922 | private void pushZoomUndo(EastNorth center, double scale) {
|
---|
923 | Date now = new Date();
|
---|
924 | if ((now.getTime() - zoomTimestamp.getTime()) > (Config.getPref().getDouble("zoom.undo.delay", 1.0) * 1000)) {
|
---|
925 | zoomUndoBuffer.push(new ZoomData(center, scale));
|
---|
926 | if (zoomUndoBuffer.size() > Config.getPref().getInt("zoom.undo.max", 50)) {
|
---|
927 | zoomUndoBuffer.remove(0);
|
---|
928 | }
|
---|
929 | zoomRedoBuffer.clear();
|
---|
930 | }
|
---|
931 | zoomTimestamp = now;
|
---|
932 | }
|
---|
933 |
|
---|
934 | /**
|
---|
935 | * Zoom to previous location.
|
---|
936 | */
|
---|
937 | public void zoomPrevious() {
|
---|
938 | if (!zoomUndoBuffer.isEmpty()) {
|
---|
939 | ZoomData zoom = zoomUndoBuffer.pop();
|
---|
940 | zoomRedoBuffer.push(new ZoomData(getCenter(), getScale()));
|
---|
941 | zoomNoUndoTo(zoom.getCenterEastNorth(), zoom.getScale(), false);
|
---|
942 | }
|
---|
943 | }
|
---|
944 |
|
---|
945 | /**
|
---|
946 | * Zoom to next location.
|
---|
947 | */
|
---|
948 | public void zoomNext() {
|
---|
949 | if (!zoomRedoBuffer.isEmpty()) {
|
---|
950 | ZoomData zoom = zoomRedoBuffer.pop();
|
---|
951 | zoomUndoBuffer.push(new ZoomData(getCenter(), getScale()));
|
---|
952 | zoomNoUndoTo(zoom.getCenterEastNorth(), zoom.getScale(), false);
|
---|
953 | }
|
---|
954 | }
|
---|
955 |
|
---|
956 | /**
|
---|
957 | * Determines if zoom history contains "undo" entries.
|
---|
958 | * @return {@code true} if zoom history contains "undo" entries
|
---|
959 | */
|
---|
960 | public boolean hasZoomUndoEntries() {
|
---|
961 | return !zoomUndoBuffer.isEmpty();
|
---|
962 | }
|
---|
963 |
|
---|
964 | /**
|
---|
965 | * Determines if zoom history contains "redo" entries.
|
---|
966 | * @return {@code true} if zoom history contains "redo" entries
|
---|
967 | */
|
---|
968 | public boolean hasZoomRedoEntries() {
|
---|
969 | return !zoomRedoBuffer.isEmpty();
|
---|
970 | }
|
---|
971 |
|
---|
972 | private BBox getBBox(Point p, int snapDistance) {
|
---|
973 | return new BBox(getLatLon(p.x - snapDistance, p.y - snapDistance),
|
---|
974 | getLatLon(p.x + snapDistance, p.y + snapDistance));
|
---|
975 | }
|
---|
976 |
|
---|
977 | /**
|
---|
978 | * The *result* does not depend on the current map selection state, neither does the result *order*.
|
---|
979 | * It solely depends on the distance to point p.
|
---|
980 | * @param p point
|
---|
981 | * @param predicate predicate to match
|
---|
982 | *
|
---|
983 | * @return a sorted map with the keys representing the distance of their associated nodes to point p.
|
---|
984 | */
|
---|
985 | private Map<Double, List<Node>> getNearestNodesImpl(Point p, Predicate<OsmPrimitive> predicate) {
|
---|
986 | Map<Double, List<Node>> nearestMap = new TreeMap<>();
|
---|
987 | DataSet ds = MainApplication.getLayerManager().getActiveDataSet();
|
---|
988 |
|
---|
989 | if (ds != null) {
|
---|
990 | double dist, snapDistanceSq = PROP_SNAP_DISTANCE.get();
|
---|
991 | snapDistanceSq *= snapDistanceSq;
|
---|
992 |
|
---|
993 | for (Node n : ds.searchNodes(getBBox(p, PROP_SNAP_DISTANCE.get()))) {
|
---|
994 | if (predicate.test(n)
|
---|
995 | && (dist = getPoint2D(n).distanceSq(p)) < snapDistanceSq) {
|
---|
996 | nearestMap.computeIfAbsent(dist, k -> new LinkedList<>()).add(n);
|
---|
997 | }
|
---|
998 | }
|
---|
999 | }
|
---|
1000 |
|
---|
1001 | return nearestMap;
|
---|
1002 | }
|
---|
1003 |
|
---|
1004 | /**
|
---|
1005 | * The *result* does not depend on the current map selection state,
|
---|
1006 | * neither does the result *order*.
|
---|
1007 | * It solely depends on the distance to point p.
|
---|
1008 | *
|
---|
1009 | * @param p the point for which to search the nearest segment.
|
---|
1010 | * @param ignore a collection of nodes which are not to be returned.
|
---|
1011 | * @param predicate the returned objects have to fulfill certain properties.
|
---|
1012 | *
|
---|
1013 | * @return All nodes nearest to point p that are in a belt from
|
---|
1014 | * dist(nearest) to dist(nearest)+4px around p and
|
---|
1015 | * that are not in ignore.
|
---|
1016 | */
|
---|
1017 | public final List<Node> getNearestNodes(Point p,
|
---|
1018 | Collection<Node> ignore, Predicate<OsmPrimitive> predicate) {
|
---|
1019 | List<Node> nearestList = Collections.emptyList();
|
---|
1020 |
|
---|
1021 | if (ignore == null) {
|
---|
1022 | ignore = Collections.emptySet();
|
---|
1023 | }
|
---|
1024 |
|
---|
1025 | Map<Double, List<Node>> nlists = getNearestNodesImpl(p, predicate);
|
---|
1026 | if (!nlists.isEmpty()) {
|
---|
1027 | Double minDistSq = null;
|
---|
1028 | for (Entry<Double, List<Node>> entry : nlists.entrySet()) {
|
---|
1029 | Double distSq = entry.getKey();
|
---|
1030 | List<Node> nlist = entry.getValue();
|
---|
1031 |
|
---|
1032 | // filter nodes to be ignored before determining minDistSq..
|
---|
1033 | nlist.removeAll(ignore);
|
---|
1034 | if (minDistSq == null) {
|
---|
1035 | if (!nlist.isEmpty()) {
|
---|
1036 | minDistSq = distSq;
|
---|
1037 | nearestList = new ArrayList<>();
|
---|
1038 | nearestList.addAll(nlist);
|
---|
1039 | }
|
---|
1040 | } else {
|
---|
1041 | if (distSq-minDistSq < (4)*(4)) {
|
---|
1042 | nearestList.addAll(nlist);
|
---|
1043 | }
|
---|
1044 | }
|
---|
1045 | }
|
---|
1046 | }
|
---|
1047 |
|
---|
1048 | return nearestList;
|
---|
1049 | }
|
---|
1050 |
|
---|
1051 | /**
|
---|
1052 | * The *result* does not depend on the current map selection state,
|
---|
1053 | * neither does the result *order*.
|
---|
1054 | * It solely depends on the distance to point p.
|
---|
1055 | *
|
---|
1056 | * @param p the point for which to search the nearest segment.
|
---|
1057 | * @param predicate the returned objects have to fulfill certain properties.
|
---|
1058 | *
|
---|
1059 | * @return All nodes nearest to point p that are in a belt from
|
---|
1060 | * dist(nearest) to dist(nearest)+4px around p.
|
---|
1061 | * @see #getNearestNodes(Point, Collection, Predicate)
|
---|
1062 | */
|
---|
1063 | public final List<Node> getNearestNodes(Point p, Predicate<OsmPrimitive> predicate) {
|
---|
1064 | return getNearestNodes(p, null, predicate);
|
---|
1065 | }
|
---|
1066 |
|
---|
1067 | /**
|
---|
1068 | * The *result* depends on the current map selection state IF use_selected is true.
|
---|
1069 | *
|
---|
1070 | * If more than one node within node.snap-distance pixels is found,
|
---|
1071 | * the nearest node selected is returned IF use_selected is true.
|
---|
1072 | *
|
---|
1073 | * Else the nearest new/id=0 node within about the same distance
|
---|
1074 | * as the true nearest node is returned.
|
---|
1075 | *
|
---|
1076 | * If no such node is found either, the true nearest node to p is returned.
|
---|
1077 | *
|
---|
1078 | * Finally, if a node is not found at all, null is returned.
|
---|
1079 | *
|
---|
1080 | * @param p the screen point
|
---|
1081 | * @param predicate this parameter imposes a condition on the returned object, e.g.
|
---|
1082 | * give the nearest node that is tagged.
|
---|
1083 | * @param useSelected make search depend on selection
|
---|
1084 | *
|
---|
1085 | * @return A node within snap-distance to point p, that is chosen by the algorithm described.
|
---|
1086 | */
|
---|
1087 | public final Node getNearestNode(Point p, Predicate<OsmPrimitive> predicate, boolean useSelected) {
|
---|
1088 | return getNearestNode(p, predicate, useSelected, null);
|
---|
1089 | }
|
---|
1090 |
|
---|
1091 | /**
|
---|
1092 | * The *result* depends on the current map selection state IF use_selected is true
|
---|
1093 | *
|
---|
1094 | * If more than one node within node.snap-distance pixels is found,
|
---|
1095 | * the nearest node selected is returned IF use_selected is true.
|
---|
1096 | *
|
---|
1097 | * If there are no selected nodes near that point, the node that is related to some of the preferredRefs
|
---|
1098 | *
|
---|
1099 | * Else the nearest new/id=0 node within about the same distance
|
---|
1100 | * as the true nearest node is returned.
|
---|
1101 | *
|
---|
1102 | * If no such node is found either, the true nearest node to p is returned.
|
---|
1103 | *
|
---|
1104 | * Finally, if a node is not found at all, null is returned.
|
---|
1105 | *
|
---|
1106 | * @param p the screen point
|
---|
1107 | * @param predicate this parameter imposes a condition on the returned object, e.g.
|
---|
1108 | * give the nearest node that is tagged.
|
---|
1109 | * @param useSelected make search depend on selection
|
---|
1110 | * @param preferredRefs primitives, whose nodes we prefer
|
---|
1111 | *
|
---|
1112 | * @return A node within snap-distance to point p, that is chosen by the algorithm described.
|
---|
1113 | * @since 6065
|
---|
1114 | */
|
---|
1115 | public final Node getNearestNode(Point p, Predicate<OsmPrimitive> predicate,
|
---|
1116 | boolean useSelected, Collection<OsmPrimitive> preferredRefs) {
|
---|
1117 |
|
---|
1118 | Map<Double, List<Node>> nlists = getNearestNodesImpl(p, predicate);
|
---|
1119 | if (nlists.isEmpty()) return null;
|
---|
1120 |
|
---|
1121 | if (preferredRefs != null && preferredRefs.isEmpty()) preferredRefs = null;
|
---|
1122 | Node ntsel = null, ntnew = null, ntref = null;
|
---|
1123 | boolean useNtsel = useSelected;
|
---|
1124 | double minDistSq = nlists.keySet().iterator().next();
|
---|
1125 |
|
---|
1126 | for (Entry<Double, List<Node>> entry : nlists.entrySet()) {
|
---|
1127 | Double distSq = entry.getKey();
|
---|
1128 | for (Node nd : entry.getValue()) {
|
---|
1129 | // find the nearest selected node
|
---|
1130 | if (ntsel == null && nd.isSelected()) {
|
---|
1131 | ntsel = nd;
|
---|
1132 | // if there are multiple nearest nodes, prefer the one
|
---|
1133 | // that is selected. This is required in order to drag
|
---|
1134 | // the selected node if multiple nodes have the same
|
---|
1135 | // coordinates (e.g. after unglue)
|
---|
1136 | useNtsel |= Utils.equalsEpsilon(distSq, minDistSq);
|
---|
1137 | }
|
---|
1138 | if (ntref == null && preferredRefs != null && Utils.equalsEpsilon(distSq, minDistSq)) {
|
---|
1139 | List<OsmPrimitive> ndRefs = nd.getReferrers();
|
---|
1140 | for (OsmPrimitive ref: preferredRefs) {
|
---|
1141 | if (ndRefs.contains(ref)) {
|
---|
1142 | ntref = nd;
|
---|
1143 | break;
|
---|
1144 | }
|
---|
1145 | }
|
---|
1146 | }
|
---|
1147 | // find the nearest newest node that is within about the same
|
---|
1148 | // distance as the true nearest node
|
---|
1149 | if (ntnew == null && nd.isNew() && (distSq-minDistSq < 1)) {
|
---|
1150 | ntnew = nd;
|
---|
1151 | }
|
---|
1152 | }
|
---|
1153 | }
|
---|
1154 |
|
---|
1155 | // take nearest selected, nearest new or true nearest node to p, in that order
|
---|
1156 | if (ntsel != null && useNtsel)
|
---|
1157 | return ntsel;
|
---|
1158 | if (ntref != null)
|
---|
1159 | return ntref;
|
---|
1160 | if (ntnew != null)
|
---|
1161 | return ntnew;
|
---|
1162 | return nlists.values().iterator().next().get(0);
|
---|
1163 | }
|
---|
1164 |
|
---|
1165 | /**
|
---|
1166 | * Convenience method to {@link #getNearestNode(Point, Predicate, boolean)}.
|
---|
1167 | * @param p the screen point
|
---|
1168 | * @param predicate this parameter imposes a condition on the returned object, e.g.
|
---|
1169 | * give the nearest node that is tagged.
|
---|
1170 | *
|
---|
1171 | * @return The nearest node to point p.
|
---|
1172 | */
|
---|
1173 | public final Node getNearestNode(Point p, Predicate<OsmPrimitive> predicate) {
|
---|
1174 | return getNearestNode(p, predicate, true);
|
---|
1175 | }
|
---|
1176 |
|
---|
1177 | /**
|
---|
1178 | * The *result* does not depend on the current map selection state, neither does the result *order*.
|
---|
1179 | * It solely depends on the distance to point p.
|
---|
1180 | * @param p the screen point
|
---|
1181 | * @param predicate this parameter imposes a condition on the returned object, e.g.
|
---|
1182 | * give the nearest node that is tagged.
|
---|
1183 | *
|
---|
1184 | * @return a sorted map with the keys representing the perpendicular
|
---|
1185 | * distance of their associated way segments to point p.
|
---|
1186 | */
|
---|
1187 | private Map<Double, List<WaySegment>> getNearestWaySegmentsImpl(Point p, Predicate<OsmPrimitive> predicate) {
|
---|
1188 | Map<Double, List<WaySegment>> nearestMap = new TreeMap<>();
|
---|
1189 | DataSet ds = MainApplication.getLayerManager().getActiveDataSet();
|
---|
1190 |
|
---|
1191 | if (ds != null) {
|
---|
1192 | double snapDistanceSq = Config.getPref().getInt("mappaint.segment.snap-distance", 10);
|
---|
1193 | snapDistanceSq *= snapDistanceSq;
|
---|
1194 |
|
---|
1195 | for (Way w : ds.searchWays(getBBox(p, Config.getPref().getInt("mappaint.segment.snap-distance", 10)))) {
|
---|
1196 | if (!predicate.test(w)) {
|
---|
1197 | continue;
|
---|
1198 | }
|
---|
1199 | Node lastN = null;
|
---|
1200 | int i = -2;
|
---|
1201 | for (Node n : w.getNodes()) {
|
---|
1202 | i++;
|
---|
1203 | if (n.isDeleted() || n.isIncomplete()) { //FIXME: This shouldn't happen, raise exception?
|
---|
1204 | continue;
|
---|
1205 | }
|
---|
1206 | if (lastN == null) {
|
---|
1207 | lastN = n;
|
---|
1208 | continue;
|
---|
1209 | }
|
---|
1210 |
|
---|
1211 | Point2D pA = getPoint2D(lastN);
|
---|
1212 | Point2D pB = getPoint2D(n);
|
---|
1213 | double c = pA.distanceSq(pB);
|
---|
1214 | double a = p.distanceSq(pB);
|
---|
1215 | double b = p.distanceSq(pA);
|
---|
1216 |
|
---|
1217 | /* perpendicular distance squared
|
---|
1218 | * loose some precision to account for possible deviations in the calculation above
|
---|
1219 | * e.g. if identical (A and B) come about reversed in another way, values may differ
|
---|
1220 | * -- zero out least significant 32 dual digits of mantissa..
|
---|
1221 | */
|
---|
1222 | double perDistSq = Double.longBitsToDouble(
|
---|
1223 | Double.doubleToLongBits(a - (a - b + c) * (a - b + c) / 4 / c)
|
---|
1224 | >> 32 << 32); // resolution in numbers with large exponent not needed here..
|
---|
1225 |
|
---|
1226 | if (perDistSq < snapDistanceSq && a < c + snapDistanceSq && b < c + snapDistanceSq) {
|
---|
1227 | nearestMap.computeIfAbsent(perDistSq, k -> new LinkedList<>()).add(new WaySegment(w, i));
|
---|
1228 | }
|
---|
1229 |
|
---|
1230 | lastN = n;
|
---|
1231 | }
|
---|
1232 | }
|
---|
1233 | }
|
---|
1234 |
|
---|
1235 | return nearestMap;
|
---|
1236 | }
|
---|
1237 |
|
---|
1238 | /**
|
---|
1239 | * The result *order* depends on the current map selection state.
|
---|
1240 | * Segments within 10px of p are searched and sorted by their distance to @param p,
|
---|
1241 | * then, within groups of equally distant segments, prefer those that are selected.
|
---|
1242 | *
|
---|
1243 | * @param p the point for which to search the nearest segments.
|
---|
1244 | * @param ignore a collection of segments which are not to be returned.
|
---|
1245 | * @param predicate the returned objects have to fulfill certain properties.
|
---|
1246 | *
|
---|
1247 | * @return all segments within 10px of p that are not in ignore,
|
---|
1248 | * sorted by their perpendicular distance.
|
---|
1249 | */
|
---|
1250 | public final List<WaySegment> getNearestWaySegments(Point p,
|
---|
1251 | Collection<WaySegment> ignore, Predicate<OsmPrimitive> predicate) {
|
---|
1252 | List<WaySegment> nearestList = new ArrayList<>();
|
---|
1253 | List<WaySegment> unselected = new LinkedList<>();
|
---|
1254 |
|
---|
1255 | for (List<WaySegment> wss : getNearestWaySegmentsImpl(p, predicate).values()) {
|
---|
1256 | // put selected waysegs within each distance group first
|
---|
1257 | // makes the order of nearestList dependent on current selection state
|
---|
1258 | for (WaySegment ws : wss) {
|
---|
1259 | (ws.way.isSelected() ? nearestList : unselected).add(ws);
|
---|
1260 | }
|
---|
1261 | nearestList.addAll(unselected);
|
---|
1262 | unselected.clear();
|
---|
1263 | }
|
---|
1264 | if (ignore != null) {
|
---|
1265 | nearestList.removeAll(ignore);
|
---|
1266 | }
|
---|
1267 |
|
---|
1268 | return nearestList;
|
---|
1269 | }
|
---|
1270 |
|
---|
1271 | /**
|
---|
1272 | * The result *order* depends on the current map selection state.
|
---|
1273 | *
|
---|
1274 | * @param p the point for which to search the nearest segments.
|
---|
1275 | * @param predicate the returned objects have to fulfill certain properties.
|
---|
1276 | *
|
---|
1277 | * @return all segments within 10px of p, sorted by their perpendicular distance.
|
---|
1278 | * @see #getNearestWaySegments(Point, Collection, Predicate)
|
---|
1279 | */
|
---|
1280 | public final List<WaySegment> getNearestWaySegments(Point p, Predicate<OsmPrimitive> predicate) {
|
---|
1281 | return getNearestWaySegments(p, null, predicate);
|
---|
1282 | }
|
---|
1283 |
|
---|
1284 | /**
|
---|
1285 | * The *result* depends on the current map selection state IF use_selected is true.
|
---|
1286 | *
|
---|
1287 | * @param p the point for which to search the nearest segment.
|
---|
1288 | * @param predicate the returned object has to fulfill certain properties.
|
---|
1289 | * @param useSelected whether selected way segments should be preferred.
|
---|
1290 | *
|
---|
1291 | * @return The nearest way segment to point p,
|
---|
1292 | * and, depending on use_selected, prefers a selected way segment, if found.
|
---|
1293 | * @see #getNearestWaySegments(Point, Collection, Predicate)
|
---|
1294 | */
|
---|
1295 | public final WaySegment getNearestWaySegment(Point p, Predicate<OsmPrimitive> predicate, boolean useSelected) {
|
---|
1296 | WaySegment wayseg = null;
|
---|
1297 | WaySegment ntsel = null;
|
---|
1298 |
|
---|
1299 | for (List<WaySegment> wslist : getNearestWaySegmentsImpl(p, predicate).values()) {
|
---|
1300 | if (wayseg != null && ntsel != null) {
|
---|
1301 | break;
|
---|
1302 | }
|
---|
1303 | for (WaySegment ws : wslist) {
|
---|
1304 | if (wayseg == null) {
|
---|
1305 | wayseg = ws;
|
---|
1306 | }
|
---|
1307 | if (ntsel == null && ws.way.isSelected()) {
|
---|
1308 | ntsel = ws;
|
---|
1309 | }
|
---|
1310 | }
|
---|
1311 | }
|
---|
1312 |
|
---|
1313 | return (ntsel != null && useSelected) ? ntsel : wayseg;
|
---|
1314 | }
|
---|
1315 |
|
---|
1316 | /**
|
---|
1317 | * The *result* depends on the current map selection state IF use_selected is true.
|
---|
1318 | *
|
---|
1319 | * @param p the point for which to search the nearest segment.
|
---|
1320 | * @param predicate the returned object has to fulfill certain properties.
|
---|
1321 | * @param useSelected whether selected way segments should be preferred.
|
---|
1322 | * @param preferredRefs - prefer segments related to these primitives, may be null
|
---|
1323 | *
|
---|
1324 | * @return The nearest way segment to point p,
|
---|
1325 | * and, depending on use_selected, prefers a selected way segment, if found.
|
---|
1326 | * Also prefers segments of ways that are related to one of preferredRefs primitives
|
---|
1327 | *
|
---|
1328 | * @see #getNearestWaySegments(Point, Collection, Predicate)
|
---|
1329 | * @since 6065
|
---|
1330 | */
|
---|
1331 | public final WaySegment getNearestWaySegment(Point p, Predicate<OsmPrimitive> predicate,
|
---|
1332 | boolean useSelected, Collection<OsmPrimitive> preferredRefs) {
|
---|
1333 | WaySegment wayseg = null;
|
---|
1334 | if (preferredRefs != null && preferredRefs.isEmpty())
|
---|
1335 | preferredRefs = null;
|
---|
1336 |
|
---|
1337 | for (List<WaySegment> wslist : getNearestWaySegmentsImpl(p, predicate).values()) {
|
---|
1338 | for (WaySegment ws : wslist) {
|
---|
1339 | if (wayseg == null) {
|
---|
1340 | wayseg = ws;
|
---|
1341 | }
|
---|
1342 | if (useSelected && ws.way.isSelected()) {
|
---|
1343 | return ws;
|
---|
1344 | }
|
---|
1345 | if (preferredRefs != null && !preferredRefs.isEmpty()) {
|
---|
1346 | // prefer ways containing given nodes
|
---|
1347 | if (preferredRefs.contains(ws.getFirstNode()) || preferredRefs.contains(ws.getSecondNode())) {
|
---|
1348 | return ws;
|
---|
1349 | }
|
---|
1350 | Collection<OsmPrimitive> wayRefs = ws.way.getReferrers();
|
---|
1351 | // prefer member of the given relations
|
---|
1352 | for (OsmPrimitive ref: preferredRefs) {
|
---|
1353 | if (ref instanceof Relation && wayRefs.contains(ref)) {
|
---|
1354 | return ws;
|
---|
1355 | }
|
---|
1356 | }
|
---|
1357 | }
|
---|
1358 | }
|
---|
1359 | }
|
---|
1360 | return wayseg;
|
---|
1361 | }
|
---|
1362 |
|
---|
1363 | /**
|
---|
1364 | * Convenience method to {@link #getNearestWaySegment(Point, Predicate, boolean)}.
|
---|
1365 | * @param p the point for which to search the nearest segment.
|
---|
1366 | * @param predicate the returned object has to fulfill certain properties.
|
---|
1367 | *
|
---|
1368 | * @return The nearest way segment to point p.
|
---|
1369 | */
|
---|
1370 | public final WaySegment getNearestWaySegment(Point p, Predicate<OsmPrimitive> predicate) {
|
---|
1371 | return getNearestWaySegment(p, predicate, true);
|
---|
1372 | }
|
---|
1373 |
|
---|
1374 | /**
|
---|
1375 | * The *result* does not depend on the current map selection state,
|
---|
1376 | * neither does the result *order*.
|
---|
1377 | * It solely depends on the perpendicular distance to point p.
|
---|
1378 | *
|
---|
1379 | * @param p the point for which to search the nearest ways.
|
---|
1380 | * @param ignore a collection of ways which are not to be returned.
|
---|
1381 | * @param predicate the returned object has to fulfill certain properties.
|
---|
1382 | *
|
---|
1383 | * @return all nearest ways to the screen point given that are not in ignore.
|
---|
1384 | * @see #getNearestWaySegments(Point, Collection, Predicate)
|
---|
1385 | */
|
---|
1386 | public final List<Way> getNearestWays(Point p,
|
---|
1387 | Collection<Way> ignore, Predicate<OsmPrimitive> predicate) {
|
---|
1388 | List<Way> nearestList = new ArrayList<>();
|
---|
1389 | Set<Way> wset = new HashSet<>();
|
---|
1390 |
|
---|
1391 | for (List<WaySegment> wss : getNearestWaySegmentsImpl(p, predicate).values()) {
|
---|
1392 | for (WaySegment ws : wss) {
|
---|
1393 | if (wset.add(ws.way)) {
|
---|
1394 | nearestList.add(ws.way);
|
---|
1395 | }
|
---|
1396 | }
|
---|
1397 | }
|
---|
1398 | if (ignore != null) {
|
---|
1399 | nearestList.removeAll(ignore);
|
---|
1400 | }
|
---|
1401 |
|
---|
1402 | return nearestList;
|
---|
1403 | }
|
---|
1404 |
|
---|
1405 | /**
|
---|
1406 | * The *result* does not depend on the current map selection state,
|
---|
1407 | * neither does the result *order*.
|
---|
1408 | * It solely depends on the perpendicular distance to point p.
|
---|
1409 | *
|
---|
1410 | * @param p the point for which to search the nearest ways.
|
---|
1411 | * @param predicate the returned object has to fulfill certain properties.
|
---|
1412 | *
|
---|
1413 | * @return all nearest ways to the screen point given.
|
---|
1414 | * @see #getNearestWays(Point, Collection, Predicate)
|
---|
1415 | */
|
---|
1416 | public final List<Way> getNearestWays(Point p, Predicate<OsmPrimitive> predicate) {
|
---|
1417 | return getNearestWays(p, null, predicate);
|
---|
1418 | }
|
---|
1419 |
|
---|
1420 | /**
|
---|
1421 | * The *result* depends on the current map selection state.
|
---|
1422 | *
|
---|
1423 | * @param p the point for which to search the nearest segment.
|
---|
1424 | * @param predicate the returned object has to fulfill certain properties.
|
---|
1425 | *
|
---|
1426 | * @return The nearest way to point p, prefer a selected way if there are multiple nearest.
|
---|
1427 | * @see #getNearestWaySegment(Point, Predicate)
|
---|
1428 | */
|
---|
1429 | public final Way getNearestWay(Point p, Predicate<OsmPrimitive> predicate) {
|
---|
1430 | WaySegment nearestWaySeg = getNearestWaySegment(p, predicate);
|
---|
1431 | return (nearestWaySeg == null) ? null : nearestWaySeg.way;
|
---|
1432 | }
|
---|
1433 |
|
---|
1434 | /**
|
---|
1435 | * The *result* does not depend on the current map selection state,
|
---|
1436 | * neither does the result *order*.
|
---|
1437 | * It solely depends on the distance to point p.
|
---|
1438 | *
|
---|
1439 | * First, nodes will be searched. If there are nodes within BBox found,
|
---|
1440 | * return a collection of those nodes only.
|
---|
1441 | *
|
---|
1442 | * If no nodes are found, search for nearest ways. If there are ways
|
---|
1443 | * within BBox found, return a collection of those ways only.
|
---|
1444 | *
|
---|
1445 | * If nothing is found, return an empty collection.
|
---|
1446 | *
|
---|
1447 | * @param p The point on screen.
|
---|
1448 | * @param ignore a collection of ways which are not to be returned.
|
---|
1449 | * @param predicate the returned object has to fulfill certain properties.
|
---|
1450 | *
|
---|
1451 | * @return Primitives nearest to the given screen point that are not in ignore.
|
---|
1452 | * @see #getNearestNodes(Point, Collection, Predicate)
|
---|
1453 | * @see #getNearestWays(Point, Collection, Predicate)
|
---|
1454 | */
|
---|
1455 | public final List<OsmPrimitive> getNearestNodesOrWays(Point p,
|
---|
1456 | Collection<OsmPrimitive> ignore, Predicate<OsmPrimitive> predicate) {
|
---|
1457 | List<OsmPrimitive> nearestList = Collections.emptyList();
|
---|
1458 | OsmPrimitive osm = getNearestNodeOrWay(p, predicate, false);
|
---|
1459 |
|
---|
1460 | if (osm != null) {
|
---|
1461 | if (osm instanceof Node) {
|
---|
1462 | nearestList = new ArrayList<>(getNearestNodes(p, predicate));
|
---|
1463 | } else if (osm instanceof Way) {
|
---|
1464 | nearestList = new ArrayList<>(getNearestWays(p, predicate));
|
---|
1465 | }
|
---|
1466 | if (ignore != null) {
|
---|
1467 | nearestList.removeAll(ignore);
|
---|
1468 | }
|
---|
1469 | }
|
---|
1470 |
|
---|
1471 | return nearestList;
|
---|
1472 | }
|
---|
1473 |
|
---|
1474 | /**
|
---|
1475 | * The *result* does not depend on the current map selection state,
|
---|
1476 | * neither does the result *order*.
|
---|
1477 | * It solely depends on the distance to point p.
|
---|
1478 | *
|
---|
1479 | * @param p The point on screen.
|
---|
1480 | * @param predicate the returned object has to fulfill certain properties.
|
---|
1481 | * @return Primitives nearest to the given screen point.
|
---|
1482 | * @see #getNearestNodesOrWays(Point, Collection, Predicate)
|
---|
1483 | */
|
---|
1484 | public final List<OsmPrimitive> getNearestNodesOrWays(Point p, Predicate<OsmPrimitive> predicate) {
|
---|
1485 | return getNearestNodesOrWays(p, null, predicate);
|
---|
1486 | }
|
---|
1487 |
|
---|
1488 | /**
|
---|
1489 | * This is used as a helper routine to {@link #getNearestNodeOrWay(Point, Predicate, boolean)}
|
---|
1490 | * It decides, whether to yield the node to be tested or look for further (way) candidates.
|
---|
1491 | *
|
---|
1492 | * @param osm node to check
|
---|
1493 | * @param p point clicked
|
---|
1494 | * @param useSelected whether to prefer selected nodes
|
---|
1495 | * @return true, if the node fulfills the properties of the function body
|
---|
1496 | */
|
---|
1497 | private boolean isPrecedenceNode(Node osm, Point p, boolean useSelected) {
|
---|
1498 | if (osm != null) {
|
---|
1499 | if (p.distanceSq(getPoint2D(osm)) <= (4*4)) return true;
|
---|
1500 | if (osm.isTagged()) return true;
|
---|
1501 | if (useSelected && osm.isSelected()) return true;
|
---|
1502 | }
|
---|
1503 | return false;
|
---|
1504 | }
|
---|
1505 |
|
---|
1506 | /**
|
---|
1507 | * The *result* depends on the current map selection state IF use_selected is true.
|
---|
1508 | *
|
---|
1509 | * IF use_selected is true, use {@link #getNearestNode(Point, Predicate)} to find
|
---|
1510 | * the nearest, selected node. If not found, try {@link #getNearestWaySegment(Point, Predicate)}
|
---|
1511 | * to find the nearest selected way.
|
---|
1512 | *
|
---|
1513 | * IF use_selected is false, or if no selected primitive was found, do the following.
|
---|
1514 | *
|
---|
1515 | * If the nearest node found is within 4px of p, simply take it.
|
---|
1516 | * Else, find the nearest way segment. Then, if p is closer to its
|
---|
1517 | * middle than to the node, take the way segment, else take the node.
|
---|
1518 | *
|
---|
1519 | * Finally, if no nearest primitive is found at all, return null.
|
---|
1520 | *
|
---|
1521 | * @param p The point on screen.
|
---|
1522 | * @param predicate the returned object has to fulfill certain properties.
|
---|
1523 | * @param useSelected whether to prefer primitives that are currently selected or referred by selected primitives
|
---|
1524 | *
|
---|
1525 | * @return A primitive within snap-distance to point p,
|
---|
1526 | * that is chosen by the algorithm described.
|
---|
1527 | * @see #getNearestNode(Point, Predicate)
|
---|
1528 | * @see #getNearestWay(Point, Predicate)
|
---|
1529 | */
|
---|
1530 | public final OsmPrimitive getNearestNodeOrWay(Point p, Predicate<OsmPrimitive> predicate, boolean useSelected) {
|
---|
1531 | Collection<OsmPrimitive> sel;
|
---|
1532 | DataSet ds = MainApplication.getLayerManager().getActiveDataSet();
|
---|
1533 | if (useSelected && ds != null) {
|
---|
1534 | sel = ds.getSelected();
|
---|
1535 | } else {
|
---|
1536 | sel = null;
|
---|
1537 | }
|
---|
1538 | OsmPrimitive osm = getNearestNode(p, predicate, useSelected, sel);
|
---|
1539 |
|
---|
1540 | if (isPrecedenceNode((Node) osm, p, useSelected)) return osm;
|
---|
1541 | WaySegment ws;
|
---|
1542 | if (useSelected) {
|
---|
1543 | ws = getNearestWaySegment(p, predicate, useSelected, sel);
|
---|
1544 | } else {
|
---|
1545 | ws = getNearestWaySegment(p, predicate, useSelected);
|
---|
1546 | }
|
---|
1547 | if (ws == null) return osm;
|
---|
1548 |
|
---|
1549 | if ((ws.way.isSelected() && useSelected) || osm == null) {
|
---|
1550 | // either (no _selected_ nearest node found, if desired) or no nearest node was found
|
---|
1551 | osm = ws.way;
|
---|
1552 | } else {
|
---|
1553 | int maxWaySegLenSq = 3*PROP_SNAP_DISTANCE.get();
|
---|
1554 | maxWaySegLenSq *= maxWaySegLenSq;
|
---|
1555 |
|
---|
1556 | Point2D wp1 = getPoint2D(ws.getFirstNode());
|
---|
1557 | Point2D wp2 = getPoint2D(ws.getSecondNode());
|
---|
1558 |
|
---|
1559 | // is wayseg shorter than maxWaySegLenSq and
|
---|
1560 | // is p closer to the middle of wayseg than to the nearest node?
|
---|
1561 | if (wp1.distanceSq(wp2) < maxWaySegLenSq &&
|
---|
1562 | p.distanceSq(project(0.5, wp1, wp2)) < p.distanceSq(getPoint2D((Node) osm))) {
|
---|
1563 | osm = ws.way;
|
---|
1564 | }
|
---|
1565 | }
|
---|
1566 | return osm;
|
---|
1567 | }
|
---|
1568 |
|
---|
1569 | /**
|
---|
1570 | * if r = 0 returns a, if r=1 returns b,
|
---|
1571 | * if r = 0.5 returns center between a and b, etc..
|
---|
1572 | *
|
---|
1573 | * @param r scale value
|
---|
1574 | * @param a root of vector
|
---|
1575 | * @param b vector
|
---|
1576 | * @return new point at a + r*(ab)
|
---|
1577 | */
|
---|
1578 | public static Point2D project(double r, Point2D a, Point2D b) {
|
---|
1579 | Point2D ret = null;
|
---|
1580 |
|
---|
1581 | if (a != null && b != null) {
|
---|
1582 | ret = new Point2D.Double(a.getX() + r*(b.getX()-a.getX()),
|
---|
1583 | a.getY() + r*(b.getY()-a.getY()));
|
---|
1584 | }
|
---|
1585 | return ret;
|
---|
1586 | }
|
---|
1587 |
|
---|
1588 | /**
|
---|
1589 | * The *result* does not depend on the current map selection state, neither does the result *order*.
|
---|
1590 | * It solely depends on the distance to point p.
|
---|
1591 | *
|
---|
1592 | * @param p The point on screen.
|
---|
1593 | * @param ignore a collection of ways which are not to be returned.
|
---|
1594 | * @param predicate the returned object has to fulfill certain properties.
|
---|
1595 | *
|
---|
1596 | * @return a list of all objects that are nearest to point p and
|
---|
1597 | * not in ignore or an empty list if nothing was found.
|
---|
1598 | */
|
---|
1599 | public final List<OsmPrimitive> getAllNearest(Point p,
|
---|
1600 | Collection<OsmPrimitive> ignore, Predicate<OsmPrimitive> predicate) {
|
---|
1601 | List<OsmPrimitive> nearestList = new ArrayList<>();
|
---|
1602 | Set<Way> wset = new HashSet<>();
|
---|
1603 |
|
---|
1604 | // add nearby ways
|
---|
1605 | for (List<WaySegment> wss : getNearestWaySegmentsImpl(p, predicate).values()) {
|
---|
1606 | for (WaySegment ws : wss) {
|
---|
1607 | if (wset.add(ws.way)) {
|
---|
1608 | nearestList.add(ws.way);
|
---|
1609 | }
|
---|
1610 | }
|
---|
1611 | }
|
---|
1612 |
|
---|
1613 | // add nearby nodes
|
---|
1614 | for (List<Node> nlist : getNearestNodesImpl(p, predicate).values()) {
|
---|
1615 | nearestList.addAll(nlist);
|
---|
1616 | }
|
---|
1617 |
|
---|
1618 | // add parent relations of nearby nodes and ways
|
---|
1619 | Set<OsmPrimitive> parentRelations = new HashSet<>();
|
---|
1620 | for (OsmPrimitive o : nearestList) {
|
---|
1621 | for (OsmPrimitive r : o.getReferrers()) {
|
---|
1622 | if (r instanceof Relation && predicate.test(r)) {
|
---|
1623 | parentRelations.add(r);
|
---|
1624 | }
|
---|
1625 | }
|
---|
1626 | }
|
---|
1627 | nearestList.addAll(parentRelations);
|
---|
1628 |
|
---|
1629 | if (ignore != null) {
|
---|
1630 | nearestList.removeAll(ignore);
|
---|
1631 | }
|
---|
1632 |
|
---|
1633 | return nearestList;
|
---|
1634 | }
|
---|
1635 |
|
---|
1636 | /**
|
---|
1637 | * The *result* does not depend on the current map selection state, neither does the result *order*.
|
---|
1638 | * It solely depends on the distance to point p.
|
---|
1639 | *
|
---|
1640 | * @param p The point on screen.
|
---|
1641 | * @param predicate the returned object has to fulfill certain properties.
|
---|
1642 | *
|
---|
1643 | * @return a list of all objects that are nearest to point p
|
---|
1644 | * or an empty list if nothing was found.
|
---|
1645 | * @see #getAllNearest(Point, Collection, Predicate)
|
---|
1646 | */
|
---|
1647 | public final List<OsmPrimitive> getAllNearest(Point p, Predicate<OsmPrimitive> predicate) {
|
---|
1648 | return getAllNearest(p, null, predicate);
|
---|
1649 | }
|
---|
1650 |
|
---|
1651 | /**
|
---|
1652 | * @return The projection to be used in calculating stuff.
|
---|
1653 | */
|
---|
1654 | public Projection getProjection() {
|
---|
1655 | return state.getProjection();
|
---|
1656 | }
|
---|
1657 |
|
---|
1658 | @Override
|
---|
1659 | public String helpTopic() {
|
---|
1660 | String n = getClass().getName();
|
---|
1661 | return n.substring(n.lastIndexOf('.')+1);
|
---|
1662 | }
|
---|
1663 |
|
---|
1664 | /**
|
---|
1665 | * Return a ID which is unique as long as viewport dimensions are the same
|
---|
1666 | * @return A unique ID, as long as viewport dimensions are the same
|
---|
1667 | */
|
---|
1668 | public int getViewID() {
|
---|
1669 | EastNorth center = getCenter();
|
---|
1670 | String x = new StringBuilder().append(center.east())
|
---|
1671 | .append('_').append(center.north())
|
---|
1672 | .append('_').append(getScale())
|
---|
1673 | .append('_').append(getWidth())
|
---|
1674 | .append('_').append(getHeight())
|
---|
1675 | .append('_').append(getProjection()).toString();
|
---|
1676 | CRC32 id = new CRC32();
|
---|
1677 | id.update(x.getBytes(StandardCharsets.UTF_8));
|
---|
1678 | return (int) id.getValue();
|
---|
1679 | }
|
---|
1680 |
|
---|
1681 | /**
|
---|
1682 | * Set new cursor.
|
---|
1683 | * @param cursor The new cursor to use.
|
---|
1684 | * @param reference A reference object that can be passed to the next set/reset calls to identify the caller.
|
---|
1685 | */
|
---|
1686 | public void setNewCursor(Cursor cursor, Object reference) {
|
---|
1687 | cursorManager.setNewCursor(cursor, reference);
|
---|
1688 | }
|
---|
1689 |
|
---|
1690 | /**
|
---|
1691 | * Set new cursor.
|
---|
1692 | * @param cursor the type of predefined cursor
|
---|
1693 | * @param reference A reference object that can be passed to the next set/reset calls to identify the caller.
|
---|
1694 | */
|
---|
1695 | public void setNewCursor(int cursor, Object reference) {
|
---|
1696 | setNewCursor(Cursor.getPredefinedCursor(cursor), reference);
|
---|
1697 | }
|
---|
1698 |
|
---|
1699 | /**
|
---|
1700 | * Remove the new cursor and reset to previous
|
---|
1701 | * @param reference Cursor reference
|
---|
1702 | */
|
---|
1703 | public void resetCursor(Object reference) {
|
---|
1704 | cursorManager.resetCursor(reference);
|
---|
1705 | }
|
---|
1706 |
|
---|
1707 | /**
|
---|
1708 | * Gets the cursor manager that is used for this NavigatableComponent.
|
---|
1709 | * @return The cursor manager.
|
---|
1710 | */
|
---|
1711 | public CursorManager getCursorManager() {
|
---|
1712 | return cursorManager;
|
---|
1713 | }
|
---|
1714 |
|
---|
1715 | /**
|
---|
1716 | * Get a max scale for projection that describes world in 1/512 of the projection unit
|
---|
1717 | * @return max scale
|
---|
1718 | */
|
---|
1719 | public double getMaxScale() {
|
---|
1720 | ProjectionBounds world = getMaxProjectionBounds();
|
---|
1721 | return Math.max(
|
---|
1722 | world.maxNorth-world.minNorth,
|
---|
1723 | world.maxEast-world.minEast
|
---|
1724 | )/512;
|
---|
1725 | }
|
---|
1726 | }
|
---|