1 | // License: GPL. For details, see LICENSE file.
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2 | package org.openstreetmap.josm.data.imagery;
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3 |
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4 | import java.awt.Polygon;
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5 | import java.text.MessageFormat;
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6 | import java.util.AbstractList;
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7 | import java.util.List;
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8 | import java.util.Objects;
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9 | import java.util.stream.Collectors;
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10 | import java.util.stream.Stream;
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11 |
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12 | import org.openstreetmap.gui.jmapviewer.Coordinate;
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13 | import org.openstreetmap.josm.data.coor.LatLon;
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14 | import org.openstreetmap.josm.tools.CheckParameterUtil;
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15 |
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16 | import static org.openstreetmap.josm.tools.I18n.tr;
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17 |
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18 | /**
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19 | * Data class to store the outline for background imagery coverage.
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20 | *
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21 | * Configuration data for imagery to describe the coverage area ({@link ImageryInfo.ImageryBounds}).
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22 | * @author Vincent
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23 | */
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24 | public class Shape {
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25 |
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26 | private final Polygon coords;
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27 |
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28 | public Shape(String asString, String separator) {
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29 | CheckParameterUtil.ensureParameterNotNull(asString, "asString");
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30 | String[] components = asString.split(separator, -1);
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31 | if (components.length % 2 != 0)
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32 | throw new IllegalArgumentException(MessageFormat.format("Even number of doubles expected in string, got {0}: {1}",
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33 | components.length, asString));
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34 | int size = components.length / 2;
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35 | this.coords = new Polygon(new int[size], new int[size], 0);
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36 | for (int i = 0; i < components.length; i += 2) {
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37 | addPoint(components[i], components[i+1]);
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38 | }
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39 | }
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40 |
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41 | /**
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42 | * Constructs a new empty {@code Shape}.
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43 | */
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44 | public Shape() {
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45 | coords = new Polygon();
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46 | // shape contents can be set later with addPoint()
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47 | }
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48 |
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49 | /**
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50 | * Encodes this as a string so that it may be parsed using {@link #Shape(String, String)}
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51 | * @param separator The separator
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52 | * @return The string encoded shape
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53 | */
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54 | public String encodeAsString(String separator) {
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55 | return getPoints().stream()
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56 | .flatMap(c -> Stream.of(c.getLat(), c.getLon()))
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57 | .map(String::valueOf)
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58 | .collect(Collectors.joining(separator));
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59 | }
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60 |
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61 | /**
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62 | * Encodes the shapes as a string using {@code ,} and {@code ;} as separators
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63 | * @param shapes The shapes to encode
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64 | * @return The string encoded shapes
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65 | */
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66 | public static String encodeAsString(List<Shape> shapes) {
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67 | return shapes.stream()
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68 | .map(s -> s.encodeAsString(","))
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69 | .collect(Collectors.joining(";"));
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70 | }
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71 |
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72 | public List<Coordinate> getPoints() {
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73 | return new AbstractList<Coordinate>() {
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74 | @Override
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75 | public Coordinate get(int index) {
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76 | double lat = coords.ypoints[index] / LatLon.MAX_SERVER_INV_PRECISION;
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77 | double lon = coords.xpoints[index] / LatLon.MAX_SERVER_INV_PRECISION;
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78 | return new Coordinate(lat, lon);
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79 | }
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80 |
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81 | @Override
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82 | public int size() {
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83 | return coords.npoints;
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84 | }
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85 | };
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86 | }
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87 |
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88 | /**
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89 | * Check if the coordinates are inside this shape.
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90 | * @see Polygon#contains(int, int)
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91 | * @param latlon The latlon to look for
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92 | * @return {@code true} if the LatLon is inside the shape.
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93 | */
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94 | public boolean contains(LatLon latlon) {
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95 | return coords.contains(
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96 | latlon.getX() * LatLon.MAX_SERVER_INV_PRECISION,
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97 | latlon.getY() * LatLon.MAX_SERVER_INV_PRECISION);
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98 | }
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99 |
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100 | public void addPoint(String sLat, String sLon) {
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101 | CheckParameterUtil.ensureParameterNotNull(sLat, "sLat");
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102 | CheckParameterUtil.ensureParameterNotNull(sLon, "sLon");
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103 |
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104 | double lat, lon;
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105 |
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106 | try {
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107 | lat = Double.parseDouble(sLat);
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108 | if (!LatLon.isValidLat(lat))
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109 | throw new IllegalArgumentException(tr("Illegal latitude value ''{0}''", lat));
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110 | } catch (NumberFormatException e) {
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111 | throw new IllegalArgumentException(MessageFormat.format("Illegal double value ''{0}''", sLat), e);
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112 | }
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113 |
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114 | try {
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115 | lon = Double.parseDouble(sLon);
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116 | if (!LatLon.isValidLon(lon))
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117 | throw new IllegalArgumentException(tr("Illegal longitude value ''{0}''", lon));
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118 | } catch (NumberFormatException e) {
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119 | throw new IllegalArgumentException(MessageFormat.format("Illegal double value ''{0}''", sLon), e);
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120 | }
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121 |
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122 | coords.addPoint(
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123 | (int) Math.round((lon * LatLon.MAX_SERVER_INV_PRECISION)),
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124 | (int) Math.round((lat * LatLon.MAX_SERVER_INV_PRECISION)));
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125 | }
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126 |
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127 | @Override
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128 | public int hashCode() {
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129 | return Objects.hash(getPoints());
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130 | }
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131 |
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132 | @Override
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133 | public boolean equals(Object obj) {
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134 | if (this == obj) return true;
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135 | if (obj == null || getClass() != obj.getClass()) return false;
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136 | Shape shape = (Shape) obj;
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137 | return Objects.equals(getPoints(), shape.getPoints());
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138 | }
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139 |
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140 | @Override
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141 | public String toString() {
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142 | return "Shape{coords=" + getPoints() + '}';
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143 | }
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144 | }
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