1 | // License: GPL. For details, see LICENSE file.
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2 | package org.openstreetmap.josm.data.osm;
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3 |
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4 | import java.awt.geom.Rectangle2D;
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5 | import java.util.Arrays;
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6 |
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7 | import org.openstreetmap.josm.data.coor.LatLon;
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8 | import org.openstreetmap.josm.data.coor.QuadTiling;
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9 | import org.openstreetmap.josm.tools.Utils;
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10 |
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11 | public class BBox {
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12 |
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13 | private double xmin = Double.POSITIVE_INFINITY;
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14 | private double xmax = Double.NEGATIVE_INFINITY;
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15 | private double ymin = Double.POSITIVE_INFINITY;
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16 | private double ymax = Double.NEGATIVE_INFINITY;
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17 |
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18 | /**
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19 | * Constructs a new {@code BBox} defined by a single point.
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20 | *
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21 | * @param x X coordinate
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22 | * @param y Y coordinate
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23 | * @since 6203
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24 | */
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25 | public BBox(final double x, final double y) {
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26 | xmax = xmin = x;
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27 | ymax = ymin = y;
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28 | sanity();
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29 | }
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30 |
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31 | /**
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32 | * Constructs a new {@code BBox} defined by points <code>a</code> and <code>b</code>.
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33 | * Result is minimal BBox containing both points.
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34 | *
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35 | * @param a
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36 | * @param b
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37 | */
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38 | public BBox(LatLon a, LatLon b) {
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39 | this(a.lon(), a.lat(), b.lon(), b.lat());
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40 | }
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41 |
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42 | /**
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43 | * Constructs a new {@code BBox} from another one.
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44 | *
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45 | * @param copy the BBox to copy
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46 | */
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47 | public BBox(BBox copy) {
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48 | this.xmin = copy.xmin;
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49 | this.xmax = copy.xmax;
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50 | this.ymin = copy.ymin;
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51 | this.ymax = copy.ymax;
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52 | }
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53 |
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54 | public BBox(double a_x, double a_y, double b_x, double b_y) {
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55 |
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56 | if (a_x > b_x) {
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57 | xmax = a_x;
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58 | xmin = b_x;
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59 | } else {
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60 | xmax = b_x;
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61 | xmin = a_x;
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62 | }
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63 |
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64 | if (a_y > b_y) {
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65 | ymax = a_y;
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66 | ymin = b_y;
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67 | } else {
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68 | ymax = b_y;
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69 | ymin = a_y;
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70 | }
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71 |
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72 | sanity();
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73 | }
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74 |
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75 | public BBox(Way w) {
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76 | for (Node n : w.getNodes()) {
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77 | LatLon coor = n.getCoor();
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78 | if (coor == null) {
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79 | continue;
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80 | }
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81 | add(coor);
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82 | }
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83 | }
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84 |
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85 | public BBox(Node n) {
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86 | LatLon coor = n.getCoor();
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87 | if (coor == null) {
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88 | xmin = xmax = ymin = ymax = 0;
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89 | } else {
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90 | xmin = xmax = coor.lon();
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91 | ymin = ymax = coor.lat();
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92 | }
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93 | }
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94 |
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95 | private void sanity() {
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96 | if (xmin < -180.0) {
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97 | xmin = -180.0;
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98 | }
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99 | if (xmax > 180.0) {
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100 | xmax = 180.0;
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101 | }
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102 | if (ymin < -90.0) {
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103 | ymin = -90.0;
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104 | }
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105 | if (ymax > 90.0) {
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106 | ymax = 90.0;
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107 | }
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108 | }
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109 |
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110 | public final void add(LatLon c) {
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111 | add(c.lon(), c.lat());
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112 | }
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113 |
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114 | /**
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115 | * Extends this bbox to include the point (x, y)
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116 | */
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117 | public final void add(double x, double y) {
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118 | xmin = Math.min(xmin, x);
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119 | xmax = Math.max(xmax, x);
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120 | ymin = Math.min(ymin, y);
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121 | ymax = Math.max(ymax, y);
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122 | sanity();
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123 | }
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124 |
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125 | public final void add(BBox box) {
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126 | xmin = Math.min(xmin, box.xmin);
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127 | xmax = Math.max(xmax, box.xmax);
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128 | ymin = Math.min(ymin, box.ymin);
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129 | ymax = Math.max(ymax, box.ymax);
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130 | sanity();
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131 | }
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132 |
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133 | public void addPrimitive(OsmPrimitive primitive, double extraSpace) {
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134 | BBox primBbox = primitive.getBBox();
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135 | add(primBbox.xmin - extraSpace, primBbox.ymin - extraSpace);
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136 | add(primBbox.xmax + extraSpace, primBbox.ymax + extraSpace);
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137 | }
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138 |
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139 | public double height() {
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140 | return ymax-ymin;
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141 | }
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142 |
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143 | public double width() {
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144 | return xmax-xmin;
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145 | }
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146 |
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147 | /**
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148 | * Tests, weather the bbox b lies completely inside
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149 | * this bbox.
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150 | */
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151 | public boolean bounds(BBox b) {
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152 | if (!(xmin <= b.xmin) ||
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153 | !(xmax >= b.xmax) ||
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154 | !(ymin <= b.ymin) ||
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155 | !(ymax >= b.ymax))
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156 | return false;
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157 | return true;
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158 | }
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159 |
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160 | /**
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161 | * Tests, weather the Point c lies within the bbox.
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162 | */
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163 | public boolean bounds(LatLon c) {
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164 | if ((xmin <= c.lon()) &&
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165 | (xmax >= c.lon()) &&
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166 | (ymin <= c.lat()) &&
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167 | (ymax >= c.lat()))
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168 | return true;
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169 | return false;
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170 | }
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171 |
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172 | /**
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173 | * Tests, weather two BBoxes intersect as an area.
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174 | * I.e. whether there exists a point that lies in both of them.
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175 | */
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176 | public boolean intersects(BBox b) {
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177 | if (xmin > b.xmax)
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178 | return false;
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179 | if (xmax < b.xmin)
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180 | return false;
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181 | if (ymin > b.ymax)
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182 | return false;
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183 | if (ymax < b.ymin)
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184 | return false;
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185 | return true;
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186 | }
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187 |
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188 | /**
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189 | * Returns the top-left point.
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190 | * @return The top-left point
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191 | */
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192 | public LatLon getTopLeft() {
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193 | return new LatLon(ymax, xmin);
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194 | }
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195 |
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196 | /**
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197 | * Returns the latitude of top-left point.
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198 | * @return The latitude of top-left point
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199 | * @since 6203
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200 | */
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201 | public double getTopLeftLat() {
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202 | return ymax;
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203 | }
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204 |
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205 | /**
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206 | * Returns the longitude of top-left point.
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207 | * @return The longitude of top-left point
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208 | * @since 6203
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209 | */
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210 | public double getTopLeftLon() {
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211 | return xmin;
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212 | }
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213 |
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214 | /**
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215 | * Returns the bottom-right point.
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216 | * @return The bottom-right point
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217 | */
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218 | public LatLon getBottomRight() {
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219 | return new LatLon(ymin, xmax);
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220 | }
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221 |
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222 | /**
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223 | * Returns the latitude of bottom-right point.
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224 | * @return The latitude of bottom-right point
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225 | * @since 6203
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226 | */
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227 | public double getBottomRightLat() {
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228 | return ymin;
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229 | }
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230 |
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231 | /**
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232 | * Returns the longitude of bottom-right point.
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233 | * @return The longitude of bottom-right point
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234 | * @since 6203
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235 | */
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236 | public double getBottomRightLon() {
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237 | return xmax;
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238 | }
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239 |
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240 | public LatLon getCenter() {
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241 | return new LatLon(ymin + (ymax-ymin)/2.0, xmin + (xmax-xmin)/2.0);
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242 | }
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243 |
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244 | int getIndex(final int level) {
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245 |
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246 | int idx1 = QuadTiling.index(ymin, xmin, level);
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247 |
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248 | final int idx2 = QuadTiling.index(ymin, xmax, level);
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249 | if (idx1 == -1) idx1 = idx2;
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250 | else if (idx1 != idx2) return -1;
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251 |
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252 | final int idx3 = QuadTiling.index(ymax, xmin, level);
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253 | if (idx1 == -1) idx1 = idx3;
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254 | else if (idx1 != idx3) return -1;
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255 |
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256 | final int idx4 = QuadTiling.index(ymax, xmax, level);
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257 | if (idx1 == -1) idx1 = idx4;
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258 | else if (idx1 != idx4) return -1;
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259 |
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260 | return idx1;
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261 | }
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262 |
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263 | public Rectangle2D toRectangle() {
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264 | return new Rectangle2D.Double(xmin, ymin, xmax - xmin, ymax - ymin);
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265 | }
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266 |
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267 | @Override
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268 | public int hashCode() {
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269 | return (int)(ymin * xmin);
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270 | }
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271 |
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272 | @Override
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273 | public boolean equals(Object o) {
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274 | if (o instanceof BBox) {
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275 | BBox b = (BBox)o;
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276 | return b.xmax == xmax && b.ymax == ymax && b.xmin == xmin && b.ymin == ymin;
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277 | } else
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278 | return false;
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279 | }
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280 |
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281 | @Override
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282 | public String toString() {
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283 | return "[ x: " + xmin + " -> " + xmax +
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284 | ", y: " + ymin + " -> " + ymax + " ]";
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285 | }
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286 |
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287 | public String toStringCSV(String separator) {
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288 | return Utils.join(separator, Arrays.asList(
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289 | LatLon.cDdFormatter.format(xmin),
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290 | LatLon.cDdFormatter.format(ymin),
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291 | LatLon.cDdFormatter.format(xmax),
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292 | LatLon.cDdFormatter.format(ymax)));
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293 | }
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294 | }
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