From b09d0e98541edc7122d992e85547741ffd57f72a Mon Sep 17 00:00:00 2001 From: Abyss777 Date: Sat, 26 Nov 2016 19:33:54 +0700 Subject: Implement polyline geofence --- src/org/traccar/geofence/GeofenceGeometry.java | 29 ++++++++ src/org/traccar/geofence/GeofencePolygon.java | 29 -------- src/org/traccar/geofence/GeofencePolyline.java | 92 ++++++++++++++++++++++++++ src/org/traccar/helper/DistanceCalculator.java | 16 +++++ src/org/traccar/model/Geofence.java | 5 ++ 5 files changed, 142 insertions(+), 29 deletions(-) create mode 100644 src/org/traccar/geofence/GeofencePolyline.java (limited to 'src/org/traccar') diff --git a/src/org/traccar/geofence/GeofenceGeometry.java b/src/org/traccar/geofence/GeofenceGeometry.java index 6b5b0acb7..d61e357ce 100644 --- a/src/org/traccar/geofence/GeofenceGeometry.java +++ b/src/org/traccar/geofence/GeofenceGeometry.java @@ -25,4 +25,33 @@ public abstract class GeofenceGeometry { public abstract void fromWkt(String wkt) throws ParseException; + public static class Coordinate { + + public static final double DEGREE360 = 360; + + private double lat; + private double lon; + + public double getLat() { + return lat; + } + + public void setLat(double lat) { + this.lat = lat; + } + + public double getLon() { + return lon; + } + + // Need not to confuse algorithm by the abrupt reset of longitude + public double getLon360() { + return lon + DEGREE360; + } + + public void setLon(double lon) { + this.lon = lon; + } + } + } diff --git a/src/org/traccar/geofence/GeofencePolygon.java b/src/org/traccar/geofence/GeofencePolygon.java index 03638d6c9..48326dc10 100644 --- a/src/org/traccar/geofence/GeofencePolygon.java +++ b/src/org/traccar/geofence/GeofencePolygon.java @@ -27,35 +27,6 @@ public class GeofencePolygon extends GeofenceGeometry { fromWkt(wkt); } - private static class Coordinate { - - public static final double DEGREE360 = 360; - - private double lat; - private double lon; - - public double getLat() { - return lat; - } - - public void setLat(double lat) { - this.lat = lat; - } - - public double getLon() { - return lon; - } - - // Need not to confuse algorithm by the abrupt reset of longitude - public double getLon360() { - return lon + DEGREE360; - } - - public void setLon(double lon) { - this.lon = lon; - } - } - private ArrayList coordinates; private double[] constant; diff --git a/src/org/traccar/geofence/GeofencePolyline.java b/src/org/traccar/geofence/GeofencePolyline.java new file mode 100644 index 000000000..60d7b0605 --- /dev/null +++ b/src/org/traccar/geofence/GeofencePolyline.java @@ -0,0 +1,92 @@ +package org.traccar.geofence; + +import java.text.ParseException; +import java.util.ArrayList; + +import org.traccar.helper.DistanceCalculator; + +public class GeofencePolyline extends GeofenceGeometry { + + private ArrayList coordinates; + private double distance; + + public GeofencePolyline() { + } + + public GeofencePolyline(String wkt, double distance) throws ParseException { + fromWkt(wkt); + this.distance = distance; + } + + @Override + public boolean containsPoint(double latitude, double longitude) { + double longitude360 = longitude + Coordinate.DEGREE360; + for (int i = 1; i < coordinates.size(); i++) { + if (DistanceCalculator.distanceToInterval( + latitude, longitude360, coordinates.get(i - 1).getLat(), coordinates.get(i - 1).getLon360(), + coordinates.get(i).getLat(), coordinates.get(i).getLon360()) <= distance) { + return true; + } + } + return false; + } + + @Override + public String toWkt() { + StringBuilder buf = new StringBuilder(); + buf.append("LINESTRING ("); + for (Coordinate coordinate : coordinates) { + buf.append(String.valueOf(coordinate.getLat())); + buf.append(" "); + buf.append(String.valueOf(coordinate.getLon())); + buf.append(", "); + } + return buf.substring(0, buf.length() - 2) + ")"; + } + + @Override + public void fromWkt(String wkt) throws ParseException { + if (coordinates == null) { + coordinates = new ArrayList<>(); + } else { + coordinates.clear(); + } + + if (!wkt.startsWith("LINESTRING")) { + throw new ParseException("Mismatch geometry type", 0); + } + String content = wkt.substring(wkt.indexOf("(") + 1, wkt.indexOf(")")); + if (content.isEmpty()) { + throw new ParseException("No content", 0); + } + String[] commaTokens = content.split(","); + if (commaTokens.length < 2) { + throw new ParseException("Not valid content", 0); + } + + for (String commaToken : commaTokens) { + String[] tokens = commaToken.trim().split("\\s"); + if (tokens.length != 2) { + throw new ParseException("Here must be two coordinates: " + commaToken, 0); + } + Coordinate coordinate = new Coordinate(); + try { + coordinate.setLat(Double.parseDouble(tokens[0])); + } catch (NumberFormatException e) { + throw new ParseException(tokens[0] + " is not a double", 0); + } + try { + coordinate.setLon(Double.parseDouble(tokens[1])); + } catch (NumberFormatException e) { + throw new ParseException(tokens[1] + " is not a double", 0); + } + coordinates.add(coordinate); + } + + } + + public void setDistance(double distance) { + this.distance = distance; + } + +} diff --git a/src/org/traccar/helper/DistanceCalculator.java b/src/org/traccar/helper/DistanceCalculator.java index 3452597ab..ceeee4be4 100644 --- a/src/org/traccar/helper/DistanceCalculator.java +++ b/src/org/traccar/helper/DistanceCalculator.java @@ -33,4 +33,20 @@ public final class DistanceCalculator { return d * 1000; } + public static double distanceToInterval( + double pointLat, double pointLon, double lat1, double lon1, double lat2, double lon2) { + double d0 = distance(pointLat, pointLon, lat1, lon1); + double d1 = distance(lat1, lon1, lat2, lon2); + double d2 = distance(lat2, lon2, pointLat, pointLon); + if (Math.pow(d0, 2) > Math.pow(d1, 2) + Math.pow(d2, 2)) { + return d2; + } + if (Math.pow(d2, 2) > Math.pow(d1, 2) + Math.pow(d0, 2)) { + return d0; + } + double halfP = (d0 + d1 + d2) * 0.5; + double area = Math.sqrt(halfP * (halfP - d0) * (halfP - d1) * (halfP - d2)); + return 2 * area / d1; + } + } diff --git a/src/org/traccar/model/Geofence.java b/src/org/traccar/model/Geofence.java index ecfd3101c..326c45b5f 100644 --- a/src/org/traccar/model/Geofence.java +++ b/src/org/traccar/model/Geofence.java @@ -17,9 +17,11 @@ package org.traccar.model; import java.text.ParseException; +import org.traccar.Context; import org.traccar.geofence.GeofenceCircle; import org.traccar.geofence.GeofenceGeometry; import org.traccar.geofence.GeofencePolygon; +import org.traccar.geofence.GeofencePolyline; import com.fasterxml.jackson.annotation.JsonIgnore; @@ -27,6 +29,7 @@ public class Geofence extends Extensible { public static final String TYPE_GEOFENCE_CILCLE = "geofenceCircle"; public static final String TYPE_GEOFENCE_POLYGON = "geofencePolygon"; + public static final String TYPE_GEOFENCE_POLYLINE = "geofencePolyline"; private String name; @@ -60,6 +63,8 @@ public class Geofence extends Extensible { geometry = new GeofenceCircle(area); } else if (area.startsWith("POLYGON")) { geometry = new GeofencePolygon(area); + } else if (area.startsWith("LINESTRING")) { + geometry = new GeofencePolyline(area, Context.getConfig().getDouble("geofence.polylineDistance", 25)); } else { throw new ParseException("Unknown geometry type", 0); } -- cgit v1.2.3