diff options
Diffstat (limited to 'altoslib/AltosMapPath.java')
| -rw-r--r-- | altoslib/AltosMapPath.java | 29 |
1 files changed, 27 insertions, 2 deletions
diff --git a/altoslib/AltosMapPath.java b/altoslib/AltosMapPath.java index 7104b2f6..54ff51fc 100644 --- a/altoslib/AltosMapPath.java +++ b/altoslib/AltosMapPath.java @@ -32,8 +32,8 @@ public abstract class AltosMapPath { public abstract void paint(AltosMapTransform t); - public AltosMapRectangle add(double lat, double lon, int state) { - AltosMapPathPoint point = new AltosMapPathPoint(new AltosLatLon (lat, lon), state); + public AltosMapRectangle add(double lat, double lon, double time, int state) { + AltosMapPathPoint point = new AltosMapPathPoint(new AltosLatLon (lat, lon), time, state); AltosMapRectangle rect = null; if (!point.equals(last_point)) { @@ -45,6 +45,31 @@ public abstract class AltosMapPath { return rect; } + private double dist(AltosLatLon lat_lon, AltosMapPathPoint point) { + return (new AltosGreatCircle(lat_lon.lat, + lat_lon.lon, + point.lat_lon.lat, + point.lat_lon.lon)).distance; + } + + public AltosMapPathPoint nearest(AltosLatLon lat_lon) { + AltosMapPathPoint nearest = null; + double nearest_dist = 0; + for (AltosMapPathPoint point : points) { + if (nearest == null) { + nearest = point; + nearest_dist = dist(lat_lon, point); + } else { + double d = dist(lat_lon, point); + if (d < nearest_dist) { + nearest = point; + nearest_dist = d; + } + } + } + return nearest; + } + public void clear () { points = new LinkedList<AltosMapPathPoint>(); } |