1 | // License: GPL. See LICENSE file for details.
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2 | package org.openstreetmap.josm.gui;
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3 |
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4 | import static org.openstreetmap.josm.tools.I18n.marktr;
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5 |
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6 | import java.awt.Cursor;
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7 | import java.awt.Point;
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8 | import java.awt.Rectangle;
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9 | import java.awt.geom.Point2D;
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10 | import java.util.ArrayList;
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11 | import java.util.Collection;
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12 | import java.util.Collections;
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13 | import java.util.Date;
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14 | import java.util.HashSet;
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15 | import java.util.LinkedHashMap;
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16 | import java.util.LinkedList;
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17 | import java.util.List;
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18 | import java.util.Locale;
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19 | import java.util.Map;
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20 | import java.util.Set;
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21 | import java.util.Stack;
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22 | import java.util.TreeMap;
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23 | import java.util.concurrent.CopyOnWriteArrayList;
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24 |
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25 | import javax.swing.JComponent;
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26 | import javax.swing.SwingUtilities;
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27 |
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28 | import org.openstreetmap.josm.Main;
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29 | import org.openstreetmap.josm.data.Bounds;
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30 | import org.openstreetmap.josm.data.ProjectionBounds;
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31 | import org.openstreetmap.josm.data.coor.CachedLatLon;
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32 | import org.openstreetmap.josm.data.coor.EastNorth;
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33 | import org.openstreetmap.josm.data.coor.LatLon;
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34 | import org.openstreetmap.josm.data.osm.BBox;
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35 | import org.openstreetmap.josm.data.osm.DataSet;
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36 | import org.openstreetmap.josm.data.osm.Node;
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37 | import org.openstreetmap.josm.data.osm.OsmPrimitive;
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38 | import org.openstreetmap.josm.data.osm.Way;
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39 | import org.openstreetmap.josm.data.osm.WaySegment;
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40 | import org.openstreetmap.josm.data.preferences.IntegerProperty;
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41 | import org.openstreetmap.josm.data.projection.Projection;
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42 | import org.openstreetmap.josm.gui.help.Helpful;
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43 | import org.openstreetmap.josm.gui.preferences.ProjectionPreference;
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44 | import org.openstreetmap.josm.tools.Predicate;
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45 |
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46 | /**
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47 | * An component that can be navigated by a mapmover. Used as map view and for the
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48 | * zoomer in the download dialog.
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49 | *
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50 | * @author imi
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51 | */
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52 | public class NavigatableComponent extends JComponent implements Helpful {
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53 |
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54 | /**
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55 | * Interface to notify listeners of the change of the zoom area.
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56 | */
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57 | public interface ZoomChangeListener {
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58 | void zoomChanged();
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59 | }
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60 |
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61 | public static final IntegerProperty PROP_SNAP_DISTANCE = new IntegerProperty("mappaint.node.snap-distance", 10);
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62 |
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63 | /**
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64 | * the zoom listeners
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65 | */
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66 | private static final CopyOnWriteArrayList<ZoomChangeListener> zoomChangeListeners = new CopyOnWriteArrayList<ZoomChangeListener>();
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67 |
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68 | /**
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69 | * Removes a zoom change listener
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70 | *
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71 | * @param listener the listener. Ignored if null or already absent
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72 | */
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73 | public static void removeZoomChangeListener(NavigatableComponent.ZoomChangeListener listener) {
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74 | zoomChangeListeners.remove(listener);
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75 | }
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76 |
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77 | /**
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78 | * Adds a zoom change listener
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79 | *
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80 | * @param listener the listener. Ignored if null or already registered.
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81 | */
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82 | public static void addZoomChangeListener(NavigatableComponent.ZoomChangeListener listener) {
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83 | if (listener != null) {
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84 | zoomChangeListeners.addIfAbsent(listener);
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85 | }
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86 | }
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87 |
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88 | protected static void fireZoomChanged() {
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89 | for (ZoomChangeListener l : zoomChangeListeners) {
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90 | l.zoomChanged();
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91 | }
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92 | }
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93 |
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94 | /**
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95 | * The scale factor in x or y-units per pixel. This means, if scale = 10,
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96 | * every physical pixel on screen are 10 x or 10 y units in the
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97 | * northing/easting space of the projection.
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98 | */
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99 | private double scale = Main.proj.getDefaultZoomInPPD();
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100 | /**
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101 | * Center n/e coordinate of the desired screen center.
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102 | */
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103 | protected EastNorth center = calculateDefaultCenter();
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104 |
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105 | public NavigatableComponent() {
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106 | setLayout(null);
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107 | }
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108 |
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109 | protected DataSet getCurrentDataSet() {
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110 | return Main.main.getCurrentDataSet();
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111 | }
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112 |
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113 | private EastNorth calculateDefaultCenter() {
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114 | Bounds b = Main.proj.getWorldBoundsLatLon();
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115 | double lat = (b.getMax().lat() + b.getMin().lat())/2;
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116 | double lon = (b.getMax().lon() + b.getMin().lon())/2;
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117 |
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118 | return Main.proj.latlon2eastNorth(new LatLon(lat, lon));
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119 | }
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120 |
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121 | public static String getDistText(double dist) {
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122 | return getSystemOfMeasurement().getDistText(dist);
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123 | }
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124 |
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125 | public String getDist100PixelText()
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126 | {
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127 | return getDistText(getDist100Pixel());
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128 | }
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129 |
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130 | public double getDist100Pixel()
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131 | {
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132 | int w = getWidth()/2;
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133 | int h = getHeight()/2;
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134 | LatLon ll1 = getLatLon(w-50,h);
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135 | LatLon ll2 = getLatLon(w+50,h);
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136 | return ll1.greatCircleDistance(ll2);
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137 | }
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138 |
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139 | /**
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140 | * @return Returns the center point. A copy is returned, so users cannot
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141 | * change the center by accessing the return value. Use zoomTo instead.
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142 | */
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143 | public EastNorth getCenter() {
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144 | return center;
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145 | }
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146 |
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147 | /**
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148 | * @param x X-Pixelposition to get coordinate from
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149 | * @param y Y-Pixelposition to get coordinate from
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150 | *
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151 | * @return Geographic coordinates from a specific pixel coordination
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152 | * on the screen.
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153 | */
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154 | public EastNorth getEastNorth(int x, int y) {
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155 | return new EastNorth(
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156 | center.east() + (x - getWidth()/2.0)*scale,
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157 | center.north() - (y - getHeight()/2.0)*scale);
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158 | }
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159 |
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160 | public ProjectionBounds getProjectionBounds() {
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161 | return new ProjectionBounds(
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162 | new EastNorth(
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163 | center.east() - getWidth()/2.0*scale,
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164 | center.north() - getHeight()/2.0*scale),
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165 | new EastNorth(
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166 | center.east() + getWidth()/2.0*scale,
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167 | center.north() + getHeight()/2.0*scale));
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168 | }
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169 |
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170 | /* FIXME: replace with better method - used by MapSlider */
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171 | public ProjectionBounds getMaxProjectionBounds() {
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172 | Bounds b = getProjection().getWorldBoundsLatLon();
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173 | return new ProjectionBounds(getProjection().latlon2eastNorth(b.getMin()),
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174 | getProjection().latlon2eastNorth(b.getMax()));
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175 | }
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176 |
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177 | /* FIXME: replace with better method - used by Main to reset Bounds when projection changes, don't use otherwise */
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178 | public Bounds getRealBounds() {
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179 | return new Bounds(
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180 | getProjection().eastNorth2latlon(new EastNorth(
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181 | center.east() - getWidth()/2.0*scale,
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182 | center.north() - getHeight()/2.0*scale)),
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183 | getProjection().eastNorth2latlon(new EastNorth(
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184 | center.east() + getWidth()/2.0*scale,
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185 | center.north() + getHeight()/2.0*scale)));
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186 | }
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187 |
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188 | /**
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189 | * @param x X-Pixelposition to get coordinate from
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190 | * @param y Y-Pixelposition to get coordinate from
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191 | *
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192 | * @return Geographic unprojected coordinates from a specific pixel coordination
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193 | * on the screen.
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194 | */
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195 | public LatLon getLatLon(int x, int y) {
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196 | return getProjection().eastNorth2latlon(getEastNorth(x, y));
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197 | }
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198 |
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199 | public LatLon getLatLon(double x, double y) {
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200 | return getLatLon((int)x, (int)y);
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201 | }
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202 |
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203 | /**
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204 | * @param r
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205 | * @return Minimum bounds that will cover rectangle
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206 | */
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207 | public Bounds getLatLonBounds(Rectangle r) {
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208 | // TODO Maybe this should be (optional) method of Projection implementation
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209 | EastNorth p1 = getEastNorth(r.x, r.y);
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210 | EastNorth p2 = getEastNorth(r.x + r.width, r.y + r.height);
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211 |
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212 | Bounds result = new Bounds(Main.proj.eastNorth2latlon(p1));
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213 |
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214 | double eastMin = Math.min(p1.east(), p2.east());
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215 | double eastMax = Math.max(p1.east(), p2.east());
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216 | double northMin = Math.min(p1.north(), p2.north());
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217 | double northMax = Math.max(p1.north(), p2.north());
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218 | double deltaEast = (eastMax - eastMin) / 10;
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219 | double deltaNorth = (northMax - northMin) / 10;
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220 |
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221 | for (int i=0; i < 10; i++) {
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222 | result.extend(Main.proj.eastNorth2latlon(new EastNorth(eastMin + i * deltaEast, northMin)));
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223 | result.extend(Main.proj.eastNorth2latlon(new EastNorth(eastMin + i * deltaEast, northMax)));
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224 | result.extend(Main.proj.eastNorth2latlon(new EastNorth(eastMin, northMin + i * deltaNorth)));
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225 | result.extend(Main.proj.eastNorth2latlon(new EastNorth(eastMax, northMin + i * deltaNorth)));
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226 | }
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227 |
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228 | return result;
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229 | }
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230 |
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231 | /**
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232 | * Return the point on the screen where this Coordinate would be.
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233 | * @param p The point, where this geopoint would be drawn.
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234 | * @return The point on screen where "point" would be drawn, relative
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235 | * to the own top/left.
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236 | */
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237 | public Point2D getPoint2D(EastNorth p) {
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238 | if (null == p)
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239 | return new Point();
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240 | double x = (p.east()-center.east())/scale + getWidth()/2;
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241 | double y = (center.north()-p.north())/scale + getHeight()/2;
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242 | return new Point2D.Double(x, y);
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243 | }
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244 |
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245 | public Point2D getPoint2D(LatLon latlon) {
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246 | if (latlon == null)
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247 | return new Point();
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248 | else if (latlon instanceof CachedLatLon)
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249 | return getPoint2D(((CachedLatLon)latlon).getEastNorth());
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250 | else
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251 | return getPoint2D(getProjection().latlon2eastNorth(latlon));
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252 | }
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253 | public Point2D getPoint2D(Node n) {
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254 | return getPoint2D(n.getEastNorth());
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255 | }
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256 |
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257 | // looses precision, may overflow (depends on p and current scale)
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258 | //@Deprecated
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259 | public Point getPoint(EastNorth p) {
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260 | Point2D d = getPoint2D(p);
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261 | return new Point((int) d.getX(), (int) d.getY());
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262 | }
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263 |
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264 | // looses precision, may overflow (depends on p and current scale)
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265 | //@Deprecated
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266 | public Point getPoint(LatLon latlon) {
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267 | Point2D d = getPoint2D(latlon);
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268 | return new Point((int) d.getX(), (int) d.getY());
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269 | }
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270 |
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271 | // looses precision, may overflow (depends on p and current scale)
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272 | //@Deprecated
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273 | public Point getPoint(Node n) {
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274 | Point2D d = getPoint2D(n);
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275 | return new Point((int) d.getX(), (int) d.getY());
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276 | }
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277 |
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278 | /**
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279 | * Zoom to the given coordinate.
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280 | * @param newCenter The center x-value (easting) to zoom to.
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281 | * @param scale The scale to use.
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282 | */
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283 | private void zoomTo(EastNorth newCenter, double newScale) {
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284 | Bounds b = getProjection().getWorldBoundsLatLon();
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285 | CachedLatLon cl = new CachedLatLon(newCenter);
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286 | boolean changed = false;
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287 | double lat = cl.lat();
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288 | double lon = cl.lon();
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289 | if(lat < b.getMin().lat()) {changed = true; lat = b.getMin().lat(); }
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290 | else if(lat > b.getMax().lat()) {changed = true; lat = b.getMax().lat(); }
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291 | if(lon < b.getMin().lon()) {changed = true; lon = b.getMin().lon(); }
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292 | else if(lon > b.getMax().lon()) {changed = true; lon = b.getMax().lon(); }
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293 | if(changed) {
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294 | newCenter = new CachedLatLon(lat, lon).getEastNorth();
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295 | }
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296 | int width = getWidth()/2;
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297 | int height = getHeight()/2;
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298 | LatLon l1 = new LatLon(b.getMin().lat(), lon);
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299 | LatLon l2 = new LatLon(b.getMax().lat(), lon);
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300 | EastNorth e1 = getProjection().latlon2eastNorth(l1);
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301 | EastNorth e2 = getProjection().latlon2eastNorth(l2);
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302 | double d = e2.north() - e1.north();
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303 | if(d < height*newScale)
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304 | {
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305 | double newScaleH = d/height;
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306 | e1 = getProjection().latlon2eastNorth(new LatLon(lat, b.getMin().lon()));
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307 | e2 = getProjection().latlon2eastNorth(new LatLon(lat, b.getMax().lon()));
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308 | d = e2.east() - e1.east();
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309 | if(d < width*newScale) {
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310 | newScale = Math.max(newScaleH, d/width);
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311 | }
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312 | }
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313 | else
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314 | {
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315 | d = d/(l1.greatCircleDistance(l2)*height*10);
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316 | if(newScale < d) {
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317 | newScale = d;
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318 | }
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319 | }
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320 |
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321 | if (!newCenter.equals(center) || (scale != newScale)) {
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322 | pushZoomUndo(center, scale);
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323 | zoomNoUndoTo(newCenter, newScale);
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324 | }
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325 | }
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326 |
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327 | /**
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328 | * Zoom to the given coordinate without adding to the zoom undo buffer.
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329 | * @param newCenter The center x-value (easting) to zoom to.
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330 | * @param scale The scale to use.
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331 | */
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332 | private void zoomNoUndoTo(EastNorth newCenter, double newScale) {
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333 | if (!newCenter.equals(center)) {
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334 | EastNorth oldCenter = center;
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335 | center = newCenter;
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336 | firePropertyChange("center", oldCenter, newCenter);
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337 | }
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338 | if (scale != newScale) {
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339 | double oldScale = scale;
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340 | scale = newScale;
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341 | firePropertyChange("scale", oldScale, newScale);
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342 | }
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343 |
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344 | repaint();
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345 | fireZoomChanged();
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346 | }
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347 |
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348 | public void zoomTo(EastNorth newCenter) {
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349 | zoomTo(newCenter, scale);
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350 | }
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351 |
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352 | public void zoomTo(LatLon newCenter) {
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353 | if(newCenter instanceof CachedLatLon) {
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354 | zoomTo(((CachedLatLon)newCenter).getEastNorth(), scale);
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355 | } else {
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356 | zoomTo(getProjection().latlon2eastNorth(newCenter), scale);
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357 | }
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358 | }
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359 |
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360 | public void smoothScrollTo(LatLon newCenter) {
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361 | if (newCenter instanceof CachedLatLon) {
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362 | smoothScrollTo(((CachedLatLon)newCenter).getEastNorth());
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363 | } else {
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364 | smoothScrollTo(getProjection().latlon2eastNorth(newCenter));
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365 | }
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366 | }
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367 |
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368 | /**
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369 | * Create a thread that moves the viewport to the given center in an
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370 | * animated fashion.
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371 | */
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372 | public void smoothScrollTo(EastNorth newCenter) {
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373 | // fixme make these configurable.
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374 | final int fps = 20; // animation frames per second
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375 | final int speed = 1500; // milliseconds for full-screen-width pan
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376 | if (!newCenter.equals(center)) {
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377 | final EastNorth oldCenter = center;
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378 | final double distance = newCenter.distance(oldCenter) / scale;
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379 | final double milliseconds = distance / getWidth() * speed;
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380 | final double frames = milliseconds * fps / 1000;
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381 | final EastNorth finalNewCenter = newCenter;
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382 |
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383 | new Thread(
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384 | new Runnable() {
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385 | public void run() {
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386 | for (int i=0; i<frames; i++)
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387 | {
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388 | // fixme - not use zoom history here
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389 | zoomTo(oldCenter.interpolate(finalNewCenter, (double) (i+1) / (double) frames));
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390 | try { Thread.sleep(1000 / fps); } catch (InterruptedException ex) { };
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391 | }
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392 | }
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393 | }
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394 | ).start();
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395 | }
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396 | }
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397 |
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398 | public void zoomToFactor(double x, double y, double factor) {
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399 | double newScale = scale*factor;
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400 | // New center position so that point under the mouse pointer stays the same place as it was before zooming
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401 | // You will get the formula by simplifying this expression: newCenter = oldCenter + mouseCoordinatesInNewZoom - mouseCoordinatesInOldZoom
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402 | zoomTo(new EastNorth(
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403 | center.east() - (x - getWidth()/2.0) * (newScale - scale),
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404 | center.north() + (y - getHeight()/2.0) * (newScale - scale)),
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405 | newScale);
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406 | }
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407 |
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408 | public void zoomToFactor(EastNorth newCenter, double factor) {
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409 | zoomTo(newCenter, scale*factor);
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410 | }
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411 |
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412 | public void zoomToFactor(double factor) {
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413 | zoomTo(center, scale*factor);
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414 | }
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415 |
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416 | public void zoomTo(ProjectionBounds box) {
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417 | // -20 to leave some border
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418 | int w = getWidth()-20;
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419 | if (w < 20) {
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420 | w = 20;
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421 | }
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422 | int h = getHeight()-20;
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423 | if (h < 20) {
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424 | h = 20;
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425 | }
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426 |
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427 | double scaleX = (box.max.east()-box.min.east())/w;
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428 | double scaleY = (box.max.north()-box.min.north())/h;
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429 | double newScale = Math.max(scaleX, scaleY);
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430 |
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431 | zoomTo(box.getCenter(), newScale);
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432 | }
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433 |
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434 | public void zoomTo(Bounds box) {
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435 | zoomTo(new ProjectionBounds(getProjection().latlon2eastNorth(box.getMin()),
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436 | getProjection().latlon2eastNorth(box.getMax())));
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437 | }
|
---|
438 |
|
---|
439 | private class ZoomData {
|
---|
440 | LatLon center;
|
---|
441 | double scale;
|
---|
442 |
|
---|
443 | public ZoomData(EastNorth center, double scale) {
|
---|
444 | this.center = new CachedLatLon(center);
|
---|
445 | this.scale = scale;
|
---|
446 | }
|
---|
447 |
|
---|
448 | public EastNorth getCenterEastNorth() {
|
---|
449 | return getProjection().latlon2eastNorth(center);
|
---|
450 | }
|
---|
451 |
|
---|
452 | public double getScale() {
|
---|
453 | return scale;
|
---|
454 | }
|
---|
455 | }
|
---|
456 |
|
---|
457 | private Stack<ZoomData> zoomUndoBuffer = new Stack<ZoomData>();
|
---|
458 | private Stack<ZoomData> zoomRedoBuffer = new Stack<ZoomData>();
|
---|
459 | private Date zoomTimestamp = new Date();
|
---|
460 |
|
---|
461 | private void pushZoomUndo(EastNorth center, double scale) {
|
---|
462 | Date now = new Date();
|
---|
463 | if ((now.getTime() - zoomTimestamp.getTime()) > (Main.pref.getDouble("zoom.undo.delay", 1.0) * 1000)) {
|
---|
464 | zoomUndoBuffer.push(new ZoomData(center, scale));
|
---|
465 | if (zoomUndoBuffer.size() > Main.pref.getInteger("zoom.undo.max", 50)) {
|
---|
466 | zoomUndoBuffer.remove(0);
|
---|
467 | }
|
---|
468 | zoomRedoBuffer.clear();
|
---|
469 | }
|
---|
470 | zoomTimestamp = now;
|
---|
471 | }
|
---|
472 |
|
---|
473 | public void zoomPrevious() {
|
---|
474 | if (!zoomUndoBuffer.isEmpty()) {
|
---|
475 | ZoomData zoom = zoomUndoBuffer.pop();
|
---|
476 | zoomRedoBuffer.push(new ZoomData(center, scale));
|
---|
477 | zoomNoUndoTo(zoom.getCenterEastNorth(), zoom.getScale());
|
---|
478 | }
|
---|
479 | }
|
---|
480 |
|
---|
481 | public void zoomNext() {
|
---|
482 | if (!zoomRedoBuffer.isEmpty()) {
|
---|
483 | ZoomData zoom = zoomRedoBuffer.pop();
|
---|
484 | zoomUndoBuffer.push(new ZoomData(center, scale));
|
---|
485 | zoomNoUndoTo(zoom.getCenterEastNorth(), zoom.getScale());
|
---|
486 | }
|
---|
487 | }
|
---|
488 |
|
---|
489 | public boolean hasZoomUndoEntries() {
|
---|
490 | return !zoomUndoBuffer.isEmpty();
|
---|
491 | }
|
---|
492 |
|
---|
493 | public boolean hasZoomRedoEntries() {
|
---|
494 | return !zoomRedoBuffer.isEmpty();
|
---|
495 | }
|
---|
496 |
|
---|
497 | private BBox getBBox(Point p, int snapDistance) {
|
---|
498 | return new BBox(getLatLon(p.x - snapDistance, p.y - snapDistance),
|
---|
499 | getLatLon(p.x + snapDistance, p.y + snapDistance));
|
---|
500 | }
|
---|
501 |
|
---|
502 | /**
|
---|
503 | * The *result* does not depend on the current map selection state,
|
---|
504 | * neither does the result *order*.
|
---|
505 | * It solely depends on the distance to point p.
|
---|
506 | *
|
---|
507 | * @return a sorted map with the keys representing the distance of
|
---|
508 | * their associated nodes to point p.
|
---|
509 | */
|
---|
510 | private Map<Double, List<Node>> getNearestNodesImpl(Point p,
|
---|
511 | Predicate<OsmPrimitive> predicate) {
|
---|
512 | TreeMap<Double, List<Node>> nearestMap = new TreeMap<Double, List<Node>>();
|
---|
513 | DataSet ds = getCurrentDataSet();
|
---|
514 |
|
---|
515 | if (ds != null) {
|
---|
516 | double dist, snapDistanceSq = PROP_SNAP_DISTANCE.get();
|
---|
517 | snapDistanceSq *= snapDistanceSq;
|
---|
518 |
|
---|
519 | for (Node n : ds.searchNodes(getBBox(p, PROP_SNAP_DISTANCE.get()))) {
|
---|
520 | if (predicate.evaluate(n)
|
---|
521 | && (dist = getPoint2D(n).distanceSq(p)) < snapDistanceSq)
|
---|
522 | {
|
---|
523 | List<Node> nlist;
|
---|
524 | if (nearestMap.containsKey(dist)) {
|
---|
525 | nlist = nearestMap.get(dist);
|
---|
526 | } else {
|
---|
527 | nlist = new LinkedList<Node>();
|
---|
528 | nearestMap.put(dist, nlist);
|
---|
529 | }
|
---|
530 | nlist.add(n);
|
---|
531 | }
|
---|
532 | }
|
---|
533 | }
|
---|
534 |
|
---|
535 | return nearestMap;
|
---|
536 | }
|
---|
537 |
|
---|
538 | /**
|
---|
539 | * The *result* does not depend on the current map selection state,
|
---|
540 | * neither does the result *order*.
|
---|
541 | * It solely depends on the distance to point p.
|
---|
542 | *
|
---|
543 | * @return All nodes nearest to point p that are in a belt from
|
---|
544 | * dist(nearest) to dist(nearest)+4px around p and
|
---|
545 | * that are not in ignore.
|
---|
546 | *
|
---|
547 | * @param p the point for which to search the nearest segment.
|
---|
548 | * @param ignore a collection of nodes which are not to be returned.
|
---|
549 | * @param predicate the returned objects have to fulfill certain properties.
|
---|
550 | */
|
---|
551 | public final List<Node> getNearestNodes(Point p,
|
---|
552 | Collection<Node> ignore, Predicate<OsmPrimitive> predicate) {
|
---|
553 | List<Node> nearestList = Collections.emptyList();
|
---|
554 |
|
---|
555 | if (ignore == null) {
|
---|
556 | ignore = Collections.emptySet();
|
---|
557 | }
|
---|
558 |
|
---|
559 | Map<Double, List<Node>> nlists = getNearestNodesImpl(p, predicate);
|
---|
560 | if (!nlists.isEmpty()) {
|
---|
561 | Double minDistSq = null;
|
---|
562 | List<Node> nlist;
|
---|
563 | for (Double distSq : nlists.keySet()) {
|
---|
564 | nlist = nlists.get(distSq);
|
---|
565 |
|
---|
566 | // filter nodes to be ignored before determining minDistSq..
|
---|
567 | nlist.removeAll(ignore);
|
---|
568 | if (minDistSq == null) {
|
---|
569 | if (!nlist.isEmpty()) {
|
---|
570 | minDistSq = distSq;
|
---|
571 | nearestList = new ArrayList<Node>();
|
---|
572 | nearestList.addAll(nlist);
|
---|
573 | }
|
---|
574 | } else {
|
---|
575 | if (distSq-minDistSq < (4)*(4)) {
|
---|
576 | nearestList.addAll(nlist);
|
---|
577 | }
|
---|
578 | }
|
---|
579 | }
|
---|
580 | }
|
---|
581 |
|
---|
582 | return nearestList;
|
---|
583 | }
|
---|
584 |
|
---|
585 | /**
|
---|
586 | * The *result* does not depend on the current map selection state,
|
---|
587 | * neither does the result *order*.
|
---|
588 | * It solely depends on the distance to point p.
|
---|
589 | *
|
---|
590 | * @return All nodes nearest to point p that are in a belt from
|
---|
591 | * dist(nearest) to dist(nearest)+4px around p.
|
---|
592 | * @see #getNearestNodes(Point, Collection, Predicate)
|
---|
593 | *
|
---|
594 | * @param p the point for which to search the nearest segment.
|
---|
595 | * @param predicate the returned objects have to fulfill certain properties.
|
---|
596 | */
|
---|
597 | public final List<Node> getNearestNodes(Point p, Predicate<OsmPrimitive> predicate) {
|
---|
598 | return getNearestNodes(p, null, predicate);
|
---|
599 | }
|
---|
600 |
|
---|
601 | /**
|
---|
602 | * The *result* depends on the current map selection state IF use_selected is true.
|
---|
603 | *
|
---|
604 | * If more than one node within node.snap-distance pixels is found,
|
---|
605 | * the nearest node selected is returned IF use_selected is true.
|
---|
606 | *
|
---|
607 | * Else the nearest new/id=0 node within about the same distance
|
---|
608 | * as the true nearest node is returned.
|
---|
609 | *
|
---|
610 | * If no such node is found either, the true nearest
|
---|
611 | * node to p is returned.
|
---|
612 | *
|
---|
613 | * Finally, if a node is not found at all, null is returned.
|
---|
614 | *
|
---|
615 | * @return A node within snap-distance to point p,
|
---|
616 | * that is chosen by the algorithm described.
|
---|
617 | *
|
---|
618 | * @param p the screen point
|
---|
619 | * @param predicate this parameter imposes a condition on the returned object, e.g.
|
---|
620 | * give the nearest node that is tagged.
|
---|
621 | */
|
---|
622 | public final Node getNearestNode(Point p, Predicate<OsmPrimitive> predicate, boolean use_selected) {
|
---|
623 | Node n = null;
|
---|
624 |
|
---|
625 | Map<Double, List<Node>> nlists = getNearestNodesImpl(p, predicate);
|
---|
626 | if (!nlists.isEmpty()) {
|
---|
627 | Node ntsel = null, ntnew = null;
|
---|
628 | double minDistSq = nlists.keySet().iterator().next();
|
---|
629 |
|
---|
630 | for (Double distSq : nlists.keySet()) {
|
---|
631 | for (Node nd : nlists.get(distSq)) {
|
---|
632 | // find the nearest selected node
|
---|
633 | if (ntsel == null && nd.isSelected()) {
|
---|
634 | ntsel = nd;
|
---|
635 | // if there are multiple nearest nodes, prefer the one
|
---|
636 | // that is selected. This is required in order to drag
|
---|
637 | // the selected node if multiple nodes have the same
|
---|
638 | // coordinates (e.g. after unglue)
|
---|
639 | use_selected |= (distSq == minDistSq);
|
---|
640 | }
|
---|
641 | // find the nearest newest node that is within about the same
|
---|
642 | // distance as the true nearest node
|
---|
643 | if (ntnew == null && nd.isNew() && (distSq-minDistSq < 1)) {
|
---|
644 | ntnew = nd;
|
---|
645 | }
|
---|
646 | }
|
---|
647 | }
|
---|
648 |
|
---|
649 | // take nearest selected, nearest new or true nearest node to p, in that order
|
---|
650 | n = (ntsel != null && use_selected) ? ntsel
|
---|
651 | : (ntnew != null) ? ntnew
|
---|
652 | : nlists.values().iterator().next().get(0);
|
---|
653 | }
|
---|
654 | return n;
|
---|
655 | }
|
---|
656 |
|
---|
657 | /**
|
---|
658 | * Convenience method to {@link #getNearestNode(Point, Predicate, boolean)}.
|
---|
659 | *
|
---|
660 | * @return The nearest node to point p.
|
---|
661 | */
|
---|
662 | public final Node getNearestNode(Point p, Predicate<OsmPrimitive> predicate) {
|
---|
663 | return getNearestNode(p, predicate, true);
|
---|
664 | }
|
---|
665 |
|
---|
666 | @Deprecated
|
---|
667 | public final Node getNearestNode(Point p) {
|
---|
668 | return getNearestNode(p, OsmPrimitive.isUsablePredicate);
|
---|
669 | }
|
---|
670 |
|
---|
671 | /**
|
---|
672 | * The *result* does not depend on the current map selection state,
|
---|
673 | * neither does the result *order*.
|
---|
674 | * It solely depends on the distance to point p.
|
---|
675 | *
|
---|
676 | * @return a sorted map with the keys representing the perpendicular
|
---|
677 | * distance of their associated way segments to point p.
|
---|
678 | */
|
---|
679 | private Map<Double, List<WaySegment>> getNearestWaySegmentsImpl(Point p,
|
---|
680 | Predicate<OsmPrimitive> predicate) {
|
---|
681 | Map<Double, List<WaySegment>> nearestMap = new TreeMap<Double, List<WaySegment>>();
|
---|
682 | DataSet ds = getCurrentDataSet();
|
---|
683 |
|
---|
684 | if (ds != null) {
|
---|
685 | double snapDistanceSq = Main.pref.getInteger("mappaint.segment.snap-distance", 10);
|
---|
686 | snapDistanceSq *= snapDistanceSq;
|
---|
687 |
|
---|
688 | for (Way w : ds.searchWays(getBBox(p, Main.pref.getInteger("mappaint.segment.snap-distance", 10)))) {
|
---|
689 | if (!predicate.evaluate(w)) {
|
---|
690 | continue;
|
---|
691 | }
|
---|
692 | Node lastN = null;
|
---|
693 | int i = -2;
|
---|
694 | for (Node n : w.getNodes()) {
|
---|
695 | i++;
|
---|
696 | if (n.isDeleted() || n.isIncomplete()) { //FIXME: This shouldn't happen, raise exception?
|
---|
697 | continue;
|
---|
698 | }
|
---|
699 | if (lastN == null) {
|
---|
700 | lastN = n;
|
---|
701 | continue;
|
---|
702 | }
|
---|
703 |
|
---|
704 | Point2D A = getPoint2D(lastN);
|
---|
705 | Point2D B = getPoint2D(n);
|
---|
706 | double c = A.distanceSq(B);
|
---|
707 | double a = p.distanceSq(B);
|
---|
708 | double b = p.distanceSq(A);
|
---|
709 |
|
---|
710 | /* perpendicular distance squared
|
---|
711 | * loose some precision to account for possible deviations in the calculation above
|
---|
712 | * e.g. if identical (A and B) come about reversed in another way, values may differ
|
---|
713 | * -- zero out least significant 32 dual digits of mantissa..
|
---|
714 | */
|
---|
715 | double perDistSq = Double.longBitsToDouble(
|
---|
716 | Double.doubleToLongBits( a - (a - b + c) * (a - b + c) / 4 / c )
|
---|
717 | >> 32 << 32); // resolution in numbers with large exponent not needed here..
|
---|
718 |
|
---|
719 | if (perDistSq < snapDistanceSq && a < c + snapDistanceSq && b < c + snapDistanceSq) {
|
---|
720 | //System.err.println(Double.toHexString(perDistSq));
|
---|
721 |
|
---|
722 | List<WaySegment> wslist;
|
---|
723 | if (nearestMap.containsKey(perDistSq)) {
|
---|
724 | wslist = nearestMap.get(perDistSq);
|
---|
725 | } else {
|
---|
726 | wslist = new LinkedList<WaySegment>();
|
---|
727 | nearestMap.put(perDistSq, wslist);
|
---|
728 | }
|
---|
729 | wslist.add(new WaySegment(w, i));
|
---|
730 | }
|
---|
731 |
|
---|
732 | lastN = n;
|
---|
733 | }
|
---|
734 | }
|
---|
735 | }
|
---|
736 |
|
---|
737 | return nearestMap;
|
---|
738 | }
|
---|
739 |
|
---|
740 | /**
|
---|
741 | * The result *order* depends on the current map selection state.
|
---|
742 | * Segments within 10px of p are searched and sorted by their distance to @param p,
|
---|
743 | * then, within groups of equally distant segments, prefer those that are selected.
|
---|
744 | *
|
---|
745 | * @return all segments within 10px of p that are not in ignore,
|
---|
746 | * sorted by their perpendicular distance.
|
---|
747 | *
|
---|
748 | * @param p the point for which to search the nearest segments.
|
---|
749 | * @param ignore a collection of segments which are not to be returned.
|
---|
750 | * @param predicate the returned objects have to fulfill certain properties.
|
---|
751 | */
|
---|
752 | public final List<WaySegment> getNearestWaySegments(Point p,
|
---|
753 | Collection<WaySegment> ignore, Predicate<OsmPrimitive> predicate) {
|
---|
754 | List<WaySegment> nearestList = new ArrayList<WaySegment>();
|
---|
755 | List<WaySegment> unselected = new LinkedList<WaySegment>();
|
---|
756 |
|
---|
757 | for (List<WaySegment> wss : getNearestWaySegmentsImpl(p, predicate).values()) {
|
---|
758 | // put selected waysegs within each distance group first
|
---|
759 | // makes the order of nearestList dependent on current selection state
|
---|
760 | for (WaySegment ws : wss) {
|
---|
761 | (ws.way.isSelected() ? nearestList : unselected).add(ws);
|
---|
762 | }
|
---|
763 | nearestList.addAll(unselected);
|
---|
764 | unselected.clear();
|
---|
765 | }
|
---|
766 | if (ignore != null) {
|
---|
767 | nearestList.removeAll(ignore);
|
---|
768 | }
|
---|
769 |
|
---|
770 | return nearestList;
|
---|
771 | }
|
---|
772 |
|
---|
773 | /**
|
---|
774 | * The result *order* depends on the current map selection state.
|
---|
775 | *
|
---|
776 | * @return all segments within 10px of p, sorted by their perpendicular distance.
|
---|
777 | * @see #getNearestWaySegments(Point, Collection, Predicate)
|
---|
778 | *
|
---|
779 | * @param p the point for which to search the nearest segments.
|
---|
780 | * @param predicate the returned objects have to fulfill certain properties.
|
---|
781 | */
|
---|
782 | public final List<WaySegment> getNearestWaySegments(Point p, Predicate<OsmPrimitive> predicate) {
|
---|
783 | return getNearestWaySegments(p, null, predicate);
|
---|
784 | }
|
---|
785 |
|
---|
786 | /**
|
---|
787 | * The *result* depends on the current map selection state IF use_selected is true.
|
---|
788 | *
|
---|
789 | * @return The nearest way segment to point p,
|
---|
790 | * and, depending on use_selected, prefers a selected way segment, if found.
|
---|
791 | * @see #getNearestWaySegments(Point, Collection, Predicate)
|
---|
792 | *
|
---|
793 | * @param p the point for which to search the nearest segment.
|
---|
794 | * @param predicate the returned object has to fulfill certain properties.
|
---|
795 | * @param use_selected whether selected way segments should be preferred.
|
---|
796 | */
|
---|
797 | public final WaySegment getNearestWaySegment(Point p, Predicate<OsmPrimitive> predicate, boolean use_selected) {
|
---|
798 | WaySegment wayseg = null, ntsel = null;
|
---|
799 |
|
---|
800 | for (List<WaySegment> wslist : getNearestWaySegmentsImpl(p, predicate).values()) {
|
---|
801 | if (wayseg != null && ntsel != null) {
|
---|
802 | break;
|
---|
803 | }
|
---|
804 | for (WaySegment ws : wslist) {
|
---|
805 | if (wayseg == null) {
|
---|
806 | wayseg = ws;
|
---|
807 | }
|
---|
808 | if (ntsel == null && ws.way.isSelected()) {
|
---|
809 | ntsel = ws;
|
---|
810 | }
|
---|
811 | }
|
---|
812 | }
|
---|
813 |
|
---|
814 | return (ntsel != null && use_selected) ? ntsel : wayseg;
|
---|
815 | }
|
---|
816 |
|
---|
817 | /**
|
---|
818 | * Convenience method to {@link #getNearestWaySegment(Point, Predicate, boolean)}.
|
---|
819 | *
|
---|
820 | * @return The nearest way segment to point p.
|
---|
821 | */
|
---|
822 | public final WaySegment getNearestWaySegment(Point p, Predicate<OsmPrimitive> predicate) {
|
---|
823 | return getNearestWaySegment(p, predicate, true);
|
---|
824 | }
|
---|
825 |
|
---|
826 | /**
|
---|
827 | * The *result* does not depend on the current map selection state,
|
---|
828 | * neither does the result *order*.
|
---|
829 | * It solely depends on the perpendicular distance to point p.
|
---|
830 | *
|
---|
831 | * @return all nearest ways to the screen point given that are not in ignore.
|
---|
832 | * @see #getNearestWaySegments(Point, Collection, Predicate)
|
---|
833 | *
|
---|
834 | * @param p the point for which to search the nearest ways.
|
---|
835 | * @param ignore a collection of ways which are not to be returned.
|
---|
836 | * @param predicate the returned object has to fulfill certain properties.
|
---|
837 | */
|
---|
838 | public final List<Way> getNearestWays(Point p,
|
---|
839 | Collection<Way> ignore, Predicate<OsmPrimitive> predicate) {
|
---|
840 | List<Way> nearestList = new ArrayList<Way>();
|
---|
841 | Set<Way> wset = new HashSet<Way>();
|
---|
842 |
|
---|
843 | for (List<WaySegment> wss : getNearestWaySegmentsImpl(p, predicate).values()) {
|
---|
844 | for (WaySegment ws : wss) {
|
---|
845 | if (wset.add(ws.way)) {
|
---|
846 | nearestList.add(ws.way);
|
---|
847 | }
|
---|
848 | }
|
---|
849 | }
|
---|
850 | if (ignore != null) {
|
---|
851 | nearestList.removeAll(ignore);
|
---|
852 | }
|
---|
853 |
|
---|
854 | return nearestList;
|
---|
855 | }
|
---|
856 |
|
---|
857 | /**
|
---|
858 | * The *result* does not depend on the current map selection state,
|
---|
859 | * neither does the result *order*.
|
---|
860 | * It solely depends on the perpendicular distance to point p.
|
---|
861 | *
|
---|
862 | * @return all nearest ways to the screen point given.
|
---|
863 | * @see #getNearestWays(Point, Collection, Predicate)
|
---|
864 | *
|
---|
865 | * @param p the point for which to search the nearest ways.
|
---|
866 | * @param predicate the returned object has to fulfill certain properties.
|
---|
867 | */
|
---|
868 | public final List<Way> getNearestWays(Point p, Predicate<OsmPrimitive> predicate) {
|
---|
869 | return getNearestWays(p, null, predicate);
|
---|
870 | }
|
---|
871 |
|
---|
872 | /**
|
---|
873 | * The *result* depends on the current map selection state.
|
---|
874 | *
|
---|
875 | * @return The nearest way to point p,
|
---|
876 | * prefer a selected way if there are multiple nearest.
|
---|
877 | * @see #getNearestWaySegment(Point, Collection, Predicate)
|
---|
878 | *
|
---|
879 | * @param p the point for which to search the nearest segment.
|
---|
880 | * @param predicate the returned object has to fulfill certain properties.
|
---|
881 | */
|
---|
882 | public final Way getNearestWay(Point p, Predicate<OsmPrimitive> predicate) {
|
---|
883 | WaySegment nearestWaySeg = getNearestWaySegment(p, predicate);
|
---|
884 | return (nearestWaySeg == null) ? null : nearestWaySeg.way;
|
---|
885 | }
|
---|
886 |
|
---|
887 | @Deprecated
|
---|
888 | public final Way getNearestWay(Point p) {
|
---|
889 | return getNearestWay(p, OsmPrimitive.isUsablePredicate);
|
---|
890 | }
|
---|
891 |
|
---|
892 | /**
|
---|
893 | * The *result* does not depend on the current map selection state,
|
---|
894 | * neither does the result *order*.
|
---|
895 | * It solely depends on the distance to point p.
|
---|
896 | *
|
---|
897 | * First, nodes will be searched. If there are nodes within BBox found,
|
---|
898 | * return a collection of those nodes only.
|
---|
899 | *
|
---|
900 | * If no nodes are found, search for nearest ways. If there are ways
|
---|
901 | * within BBox found, return a collection of those ways only.
|
---|
902 | *
|
---|
903 | * If nothing is found, return an empty collection.
|
---|
904 | *
|
---|
905 | * @return Primitives nearest to the given screen point that are not in ignore.
|
---|
906 | * @see #getNearestNodes(Point, Collection, Predicate)
|
---|
907 | * @see #getNearestWays(Point, Collection, Predicate)
|
---|
908 | *
|
---|
909 | * @param p The point on screen.
|
---|
910 | * @param ignore a collection of ways which are not to be returned.
|
---|
911 | * @param predicate the returned object has to fulfill certain properties.
|
---|
912 | */
|
---|
913 | public final List<OsmPrimitive> getNearestNodesOrWays(Point p,
|
---|
914 | Collection<OsmPrimitive> ignore, Predicate<OsmPrimitive> predicate) {
|
---|
915 | List<OsmPrimitive> nearestList = Collections.emptyList();
|
---|
916 | OsmPrimitive osm = getNearestNodeOrWay(p, predicate, false);
|
---|
917 |
|
---|
918 | if (osm != null) {
|
---|
919 | if (osm instanceof Node) {
|
---|
920 | nearestList = new ArrayList<OsmPrimitive>(getNearestNodes(p, predicate));
|
---|
921 | } else if (osm instanceof Way) {
|
---|
922 | nearestList = new ArrayList<OsmPrimitive>(getNearestWays(p, predicate));
|
---|
923 | }
|
---|
924 | if (ignore != null) {
|
---|
925 | nearestList.removeAll(ignore);
|
---|
926 | }
|
---|
927 | }
|
---|
928 |
|
---|
929 | return nearestList;
|
---|
930 | }
|
---|
931 |
|
---|
932 | /**
|
---|
933 | * The *result* does not depend on the current map selection state,
|
---|
934 | * neither does the result *order*.
|
---|
935 | * It solely depends on the distance to point p.
|
---|
936 | *
|
---|
937 | * @return Primitives nearest to the given screen point.
|
---|
938 | * @see #getNearests(Point, Collection, Predicate)
|
---|
939 | *
|
---|
940 | * @param p The point on screen.
|
---|
941 | * @param predicate the returned object has to fulfill certain properties.
|
---|
942 | */
|
---|
943 | public final List<OsmPrimitive> getNearestNodesOrWays(Point p, Predicate<OsmPrimitive> predicate) {
|
---|
944 | return getNearestNodesOrWays(p, null, predicate);
|
---|
945 | }
|
---|
946 |
|
---|
947 | /**
|
---|
948 | * This is used as a helper routine to {@link #getNearestNodeOrWay(Point, Predicate, boolean)}
|
---|
949 | * It decides, whether to yield the node to be tested or look for further (way) candidates.
|
---|
950 | *
|
---|
951 | * @return true, if the node fulfills the properties of the function body
|
---|
952 | *
|
---|
953 | * @param osm node to check
|
---|
954 | * @param p point clicked
|
---|
955 | * @param use_selected whether to prefer selected nodes
|
---|
956 | */
|
---|
957 | private boolean isPrecedenceNode(Node osm, Point p, boolean use_selected) {
|
---|
958 | boolean ret = false;
|
---|
959 |
|
---|
960 | if (osm != null) {
|
---|
961 | ret |= !(p.distanceSq(getPoint2D(osm)) > (4)*(4));
|
---|
962 | ret |= osm.isTagged();
|
---|
963 | if (use_selected) {
|
---|
964 | ret |= osm.isSelected();
|
---|
965 | }
|
---|
966 | }
|
---|
967 |
|
---|
968 | return ret;
|
---|
969 | }
|
---|
970 |
|
---|
971 | /**
|
---|
972 | * The *result* depends on the current map selection state IF use_selected is true.
|
---|
973 | *
|
---|
974 | * IF use_selected is true, use {@link #getNearestNode(Point, Predicate)} to find
|
---|
975 | * the nearest, selected node. If not found, try {@link #getNearestWaySegment(Point, Predicate)}
|
---|
976 | * to find the nearest selected way.
|
---|
977 | *
|
---|
978 | * IF use_selected is false, or if no selected primitive was found, do the following.
|
---|
979 | *
|
---|
980 | * If the nearest node found is within 4px of p, simply take it.
|
---|
981 | * Else, find the nearest way segment. Then, if p is closer to its
|
---|
982 | * middle than to the node, take the way segment, else take the node.
|
---|
983 | *
|
---|
984 | * Finally, if no nearest primitive is found at all, return null.
|
---|
985 | *
|
---|
986 | * @return A primitive within snap-distance to point p,
|
---|
987 | * that is chosen by the algorithm described.
|
---|
988 | * @see getNearestNode(Point, Predicate)
|
---|
989 | * @see getNearestNodesImpl(Point, Predicate)
|
---|
990 | * @see getNearestWay(Point, Predicate)
|
---|
991 | *
|
---|
992 | * @param p The point on screen.
|
---|
993 | * @param predicate the returned object has to fulfill certain properties.
|
---|
994 | * @param use_selected whether to prefer primitives that are currently selected.
|
---|
995 | */
|
---|
996 | public final OsmPrimitive getNearestNodeOrWay(Point p, Predicate<OsmPrimitive> predicate, boolean use_selected) {
|
---|
997 | OsmPrimitive osm = getNearestNode(p, predicate, use_selected);
|
---|
998 | WaySegment ws = null;
|
---|
999 |
|
---|
1000 | if (!isPrecedenceNode((Node)osm, p, use_selected)) {
|
---|
1001 | ws = getNearestWaySegment(p, predicate, use_selected);
|
---|
1002 |
|
---|
1003 | if (ws != null) {
|
---|
1004 | if ((ws.way.isSelected() && use_selected) || osm == null) {
|
---|
1005 | // either (no _selected_ nearest node found, if desired) or no nearest node was found
|
---|
1006 | osm = ws.way;
|
---|
1007 | } else {
|
---|
1008 | int maxWaySegLenSq = 3*PROP_SNAP_DISTANCE.get();
|
---|
1009 | maxWaySegLenSq *= maxWaySegLenSq;
|
---|
1010 |
|
---|
1011 | Point2D wp1 = getPoint2D(ws.way.getNode(ws.lowerIndex));
|
---|
1012 | Point2D wp2 = getPoint2D(ws.way.getNode(ws.lowerIndex+1));
|
---|
1013 |
|
---|
1014 | // is wayseg shorter than maxWaySegLenSq and
|
---|
1015 | // is p closer to the middle of wayseg than to the nearest node?
|
---|
1016 | if (wp1.distanceSq(wp2) < maxWaySegLenSq &&
|
---|
1017 | p.distanceSq(project(0.5, wp1, wp2)) < p.distanceSq(getPoint2D((Node)osm))) {
|
---|
1018 | osm = ws.way;
|
---|
1019 | }
|
---|
1020 | }
|
---|
1021 | }
|
---|
1022 | }
|
---|
1023 |
|
---|
1024 | return osm;
|
---|
1025 | }
|
---|
1026 |
|
---|
1027 | @Deprecated
|
---|
1028 | public final OsmPrimitive getNearest(Point p, Predicate<OsmPrimitive> predicate) {
|
---|
1029 | return getNearestNodeOrWay(p, predicate, false);
|
---|
1030 | }
|
---|
1031 |
|
---|
1032 | @Deprecated
|
---|
1033 | public final Collection<OsmPrimitive> getNearestCollection(Point p, Predicate<OsmPrimitive> predicate) {
|
---|
1034 | return asColl(getNearest(p, predicate));
|
---|
1035 | }
|
---|
1036 |
|
---|
1037 | /**
|
---|
1038 | * @return o as collection of o's type.
|
---|
1039 | */
|
---|
1040 | public static <T> Collection<T> asColl(T o) {
|
---|
1041 | if (o == null)
|
---|
1042 | return Collections.emptySet();
|
---|
1043 | return Collections.singleton(o);
|
---|
1044 | }
|
---|
1045 |
|
---|
1046 | public static double perDist(Point2D pt, Point2D a, Point2D b) {
|
---|
1047 | if (pt != null && a != null && b != null) {
|
---|
1048 | double pd = (
|
---|
1049 | (a.getX()-pt.getX())*(b.getX()-a.getX()) -
|
---|
1050 | (a.getY()-pt.getY())*(b.getY()-a.getY()) );
|
---|
1051 | return Math.abs(pd) / a.distance(b);
|
---|
1052 | }
|
---|
1053 | return 0d;
|
---|
1054 | }
|
---|
1055 |
|
---|
1056 | /**
|
---|
1057 | *
|
---|
1058 | * @param pt point to project onto (ab)
|
---|
1059 | * @param a root of vector
|
---|
1060 | * @param b vector
|
---|
1061 | * @return point of intersection of line given by (ab)
|
---|
1062 | * with its orthogonal line running through pt
|
---|
1063 | */
|
---|
1064 | public static Point2D project(Point2D pt, Point2D a, Point2D b) {
|
---|
1065 | if (pt != null && a != null && b != null) {
|
---|
1066 | double r = ((
|
---|
1067 | (pt.getX()-a.getX())*(b.getX()-a.getX()) +
|
---|
1068 | (pt.getY()-a.getY())*(b.getY()-a.getY()) )
|
---|
1069 | / a.distanceSq(b));
|
---|
1070 | return project(r, a, b);
|
---|
1071 | }
|
---|
1072 | return null;
|
---|
1073 | }
|
---|
1074 |
|
---|
1075 | /**
|
---|
1076 | * if r = 0 returns a, if r=1 returns b,
|
---|
1077 | * if r = 0.5 returns center between a and b, etc..
|
---|
1078 | *
|
---|
1079 | * @param r scale value
|
---|
1080 | * @param a root of vector
|
---|
1081 | * @param b vector
|
---|
1082 | * @return new point at a + r*(ab)
|
---|
1083 | */
|
---|
1084 | public static Point2D project(double r, Point2D a, Point2D b) {
|
---|
1085 | Point2D ret = null;
|
---|
1086 |
|
---|
1087 | if (a != null && b != null) {
|
---|
1088 | ret = new Point2D.Double(a.getX() + r*(b.getX()-a.getX()),
|
---|
1089 | a.getY() + r*(b.getY()-a.getY()));
|
---|
1090 | }
|
---|
1091 | return ret;
|
---|
1092 | }
|
---|
1093 |
|
---|
1094 | /**
|
---|
1095 | * The *result* does not depend on the current map selection state,
|
---|
1096 | * neither does the result *order*.
|
---|
1097 | * It solely depends on the distance to point p.
|
---|
1098 | *
|
---|
1099 | * @return a list of all objects that are nearest to point p and
|
---|
1100 | * not in ignore or an empty list if nothing was found.
|
---|
1101 | *
|
---|
1102 | * @param p The point on screen.
|
---|
1103 | * @param ignore a collection of ways which are not to be returned.
|
---|
1104 | * @param predicate the returned object has to fulfill certain properties.
|
---|
1105 | */
|
---|
1106 | public final List<OsmPrimitive> getAllNearest(Point p,
|
---|
1107 | Collection<OsmPrimitive> ignore, Predicate<OsmPrimitive> predicate) {
|
---|
1108 | List<OsmPrimitive> nearestList = new ArrayList<OsmPrimitive>();
|
---|
1109 | Set<Way> wset = new HashSet<Way>();
|
---|
1110 |
|
---|
1111 | for (List<WaySegment> wss : getNearestWaySegmentsImpl(p, predicate).values()) {
|
---|
1112 | for (WaySegment ws : wss) {
|
---|
1113 | if (wset.add(ws.way)) {
|
---|
1114 | nearestList.add(ws.way);
|
---|
1115 | }
|
---|
1116 | }
|
---|
1117 | }
|
---|
1118 | for (List<Node> nlist : getNearestNodesImpl(p, predicate).values()) {
|
---|
1119 | nearestList.addAll(nlist);
|
---|
1120 | }
|
---|
1121 | if (ignore != null) {
|
---|
1122 | nearestList.removeAll(ignore);
|
---|
1123 | }
|
---|
1124 |
|
---|
1125 | return nearestList;
|
---|
1126 | }
|
---|
1127 |
|
---|
1128 | /**
|
---|
1129 | * The *result* does not depend on the current map selection state,
|
---|
1130 | * neither does the result *order*.
|
---|
1131 | * It solely depends on the distance to point p.
|
---|
1132 | *
|
---|
1133 | * @return a list of all objects that are nearest to point p
|
---|
1134 | * or an empty list if nothing was found.
|
---|
1135 | * @see #getAllNearest(Point, Collection, Predicate)
|
---|
1136 | *
|
---|
1137 | * @param p The point on screen.
|
---|
1138 | * @param predicate the returned object has to fulfill certain properties.
|
---|
1139 | */
|
---|
1140 | public final List<OsmPrimitive> getAllNearest(Point p, Predicate<OsmPrimitive> predicate) {
|
---|
1141 | return getAllNearest(p, null, predicate);
|
---|
1142 | }
|
---|
1143 |
|
---|
1144 | /**
|
---|
1145 | * @return The projection to be used in calculating stuff.
|
---|
1146 | */
|
---|
1147 | public Projection getProjection() {
|
---|
1148 | return Main.proj;
|
---|
1149 | }
|
---|
1150 |
|
---|
1151 | public String helpTopic() {
|
---|
1152 | String n = getClass().getName();
|
---|
1153 | return n.substring(n.lastIndexOf('.')+1);
|
---|
1154 | }
|
---|
1155 |
|
---|
1156 | /**
|
---|
1157 | * Return a ID which is unique as long as viewport dimensions are the same
|
---|
1158 | */
|
---|
1159 | public int getViewID() {
|
---|
1160 | String x = center.east() + "_" + center.north() + "_" + scale + "_" +
|
---|
1161 | getWidth() + "_" + getHeight() + "_" + getProjection().toString();
|
---|
1162 | java.util.zip.CRC32 id = new java.util.zip.CRC32();
|
---|
1163 | id.update(x.getBytes());
|
---|
1164 | return (int)id.getValue();
|
---|
1165 | }
|
---|
1166 |
|
---|
1167 | public static SystemOfMeasurement getSystemOfMeasurement() {
|
---|
1168 | SystemOfMeasurement som = SYSTEMS_OF_MEASUREMENT.get(ProjectionPreference.PROP_SYSTEM_OF_MEASUREMENT.get());
|
---|
1169 | if (som == null)
|
---|
1170 | return METRIC_SOM;
|
---|
1171 | return som;
|
---|
1172 | }
|
---|
1173 |
|
---|
1174 | public static class SystemOfMeasurement {
|
---|
1175 | public final double aValue;
|
---|
1176 | public final double bValue;
|
---|
1177 | public final String aName;
|
---|
1178 | public final String bName;
|
---|
1179 |
|
---|
1180 | /**
|
---|
1181 | * System of measurement. Currently covers only length units.
|
---|
1182 | *
|
---|
1183 | * If a quantity x is given in m (x_m) and in unit a (x_a) then it translates as
|
---|
1184 | * x_a == x_m / aValue
|
---|
1185 | */
|
---|
1186 | public SystemOfMeasurement(double aValue, String aName, double bValue, String bName) {
|
---|
1187 | this.aValue = aValue;
|
---|
1188 | this.aName = aName;
|
---|
1189 | this.bValue = bValue;
|
---|
1190 | this.bName = bName;
|
---|
1191 | }
|
---|
1192 |
|
---|
1193 | public String getDistText(double dist) {
|
---|
1194 | double a = dist / aValue;
|
---|
1195 | if (!Main.pref.getBoolean("system_of_measurement.use_only_lower_unit", false) && a > bValue / aValue) {
|
---|
1196 | double b = dist / bValue;
|
---|
1197 | return String.format(Locale.US, "%." + (b<10 ? 2 : 1) + "f %s", b, bName);
|
---|
1198 | } else if (a < 0.01)
|
---|
1199 | return "< 0.01 " + aName;
|
---|
1200 | else
|
---|
1201 | return String.format(Locale.US, "%." + (a<10 ? 2 : 1) + "f %s", a, aName);
|
---|
1202 | }
|
---|
1203 | }
|
---|
1204 |
|
---|
1205 | public static final SystemOfMeasurement METRIC_SOM = new SystemOfMeasurement(1, "m", 1000, "km");
|
---|
1206 | public static final SystemOfMeasurement CHINESE_SOM = new SystemOfMeasurement(1.0/3.0, "\u5e02\u5c3a" /* chi */, 500, "\u5e02\u91cc" /* li */);
|
---|
1207 | public static final SystemOfMeasurement IMPERIAL_SOM = new SystemOfMeasurement(0.3048, "ft", 1609.344, "mi");
|
---|
1208 |
|
---|
1209 | public static Map<String, SystemOfMeasurement> SYSTEMS_OF_MEASUREMENT;
|
---|
1210 | static {
|
---|
1211 | SYSTEMS_OF_MEASUREMENT = new LinkedHashMap<String, SystemOfMeasurement>();
|
---|
1212 | SYSTEMS_OF_MEASUREMENT.put(marktr("Metric"), METRIC_SOM);
|
---|
1213 | SYSTEMS_OF_MEASUREMENT.put(marktr("Chinese"), CHINESE_SOM);
|
---|
1214 | SYSTEMS_OF_MEASUREMENT.put(marktr("Imperial"), IMPERIAL_SOM);
|
---|
1215 | }
|
---|
1216 |
|
---|
1217 | private class CursorInfo {
|
---|
1218 | public Cursor cursor;
|
---|
1219 | public Object object;
|
---|
1220 | public CursorInfo(Cursor c, Object o) {
|
---|
1221 | cursor = c;
|
---|
1222 | object = o;
|
---|
1223 | }
|
---|
1224 | }
|
---|
1225 |
|
---|
1226 | private LinkedList<CursorInfo> Cursors = new LinkedList<CursorInfo>();
|
---|
1227 | /**
|
---|
1228 | * Set new cursor.
|
---|
1229 | */
|
---|
1230 | public void setNewCursor(Cursor cursor, Object reference) {
|
---|
1231 | if(Cursors.size() > 0) {
|
---|
1232 | CursorInfo l = Cursors.getLast();
|
---|
1233 | if(l != null && l.cursor == cursor && l.object == reference) {
|
---|
1234 | return;
|
---|
1235 | }
|
---|
1236 | stripCursors(reference);
|
---|
1237 | }
|
---|
1238 | Cursors.add(new CursorInfo(cursor, reference));
|
---|
1239 | setCursor(cursor);
|
---|
1240 | }
|
---|
1241 | public void setNewCursor(int cursor, Object reference) {
|
---|
1242 | setNewCursor(Cursor.getPredefinedCursor(cursor), reference);
|
---|
1243 | }
|
---|
1244 | /**
|
---|
1245 | * Remove the new cursor and reset to previous
|
---|
1246 | */
|
---|
1247 | public void resetCursor(Object reference) {
|
---|
1248 | if(Cursors.size() == 0) {
|
---|
1249 | setCursor(null);
|
---|
1250 | return;
|
---|
1251 | }
|
---|
1252 | CursorInfo l = Cursors.getLast();
|
---|
1253 | stripCursors(reference);
|
---|
1254 | if(l != null && l.object == reference) {
|
---|
1255 | if(Cursors.size() == 0)
|
---|
1256 | setCursor(null);
|
---|
1257 | else
|
---|
1258 | setCursor(Cursors.getLast().cursor);
|
---|
1259 | }
|
---|
1260 | }
|
---|
1261 |
|
---|
1262 | private void stripCursors(Object reference) {
|
---|
1263 | LinkedList<CursorInfo> c = new LinkedList<CursorInfo>();
|
---|
1264 | for(CursorInfo i : Cursors) {
|
---|
1265 | if(i.object != reference)
|
---|
1266 | c.add(i);
|
---|
1267 | }
|
---|
1268 | Cursors = c;
|
---|
1269 | }
|
---|
1270 | }
|
---|