| 1 | // License: GPL. Copyright 2007 by Immanuel Scholz and others
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| 2 | package org.openstreetmap.josm.data;
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| 3 |
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| 4 | import org.openstreetmap.josm.data.coor.LatLon;
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| 5 | import org.openstreetmap.josm.data.projection.Projection;
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| 6 |
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| 7 | /**
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| 8 | * This is a simple data class for "rectangular" areas of the world, given in
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| 9 | * lat/lon min/max values.
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| 10 | *
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| 11 | * Do not confuse this with "Area", which is an OSM-primitive for a vector of nodes,
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| 12 | * describing some area (like a sea).
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| 13 | *
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| 14 | * @author imi
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| 15 | */
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| 16 | public class Bounds {
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| 17 | /**
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| 18 | * The minimum and maximum coordinates.
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| 19 | */
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| 20 | public LatLon min, max;
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| 21 |
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| 22 | /**
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| 23 | * Construct bounds out of two points
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| 24 | */
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| 25 | public Bounds(LatLon min, LatLon max) {
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| 26 | this.min = min;
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| 27 | this.max = max;
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| 28 | }
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| 29 |
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| 30 | /**
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| 31 | * Construct bounds that span the whole world.
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| 32 | */
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| 33 | public Bounds() {
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| 34 | min = new LatLon(-Projection.MAX_LAT, -Projection.MAX_LON);
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| 35 | max = new LatLon(Projection.MAX_LAT, Projection.MAX_LON);
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| 36 | }
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| 37 |
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| 38 | @Override public String toString() {
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| 39 | return "Bounds["+min.lat()+","+min.lon()+","+max.lat()+","+max.lon()+"]";
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| 40 | }
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| 41 |
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| 42 | /**
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| 43 | * @return Center of the bounding box.
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| 44 | */
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| 45 | public LatLon center() {
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| 46 | // not sure, whether this calculation is right.. maybe there is some
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| 47 | // more complex calculation needed to get a center of a spherical
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| 48 | // dimension?
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| 49 | return new LatLon((min.lat()+max.lat())/2, (min.lon()+max.lon())/2);
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| 50 | }
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| 51 |
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| 52 | /**
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| 53 | * Extend the bounds if necessary to include the given point.
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| 54 | */
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| 55 | public void extend(LatLon ll) {
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| 56 | if (ll.lat() < min.lat() || ll.lon() < min.lon())
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| 57 | min = new LatLon(Math.min(ll.lat(), min.lat()), Math.min(ll.lon(), min.lon()));
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| 58 | if (ll.lat() > max.lat() || ll.lon() > max.lon())
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| 59 | max = new LatLon(Math.max(ll.lat(), max.lat()), Math.max(ll.lon(), max.lon()));
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| 60 | }
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| 61 | }
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