TurfMeasurement { public static double length(@NonNull LineString lineString, @NonNull @TurfConstants.TurfUnitCriteria String units) { List<Point> coordinates = lineString.coordinates(); return length(coordinates, units); } private  TurfMeasurement(); static double bearing(@NonNull Point point1, @NonNull Point point2); @NonNull static Point destination(@NonNull Point point, @FloatRange(from = 0) double distance,
                                  @FloatRange(from = -180, to = 180) double bearing,
                                  @NonNull @TurfConstants.TurfUnitCriteria String units); static double distance(@NonNull Point point1, @NonNull Point point2); static double distance(@NonNull Point point1, @NonNull Point point2,
                                @NonNull @TurfConstants.TurfUnitCriteria String units); static double length(@NonNull LineString lineString,
                              @NonNull @TurfConstants.TurfUnitCriteria String units); static double length(@NonNull MultiLineString multiLineString,
                              @NonNull @TurfConstants.TurfUnitCriteria String units); static double length(@NonNull Polygon polygon,
                              @NonNull @TurfConstants.TurfUnitCriteria String units); static double length(@NonNull MultiPolygon multiPolygon,
                              @NonNull @TurfConstants.TurfUnitCriteria String units); static double length(List<Point> coords, String units); static Point midpoint(@NonNull Point from, @NonNull Point to); static Point along(@NonNull LineString line, @FloatRange(from = 0) double distance,
                            @NonNull @TurfConstants.TurfUnitCriteria String units); static Point along(@NonNull List<Point> coords, @FloatRange(from = 0) double distance,
                            @NonNull @TurfConstants.TurfUnitCriteria String units); static double[] bbox(@NonNull Point point); static double[] bbox(@NonNull LineString lineString); static double[] bbox(@NonNull MultiPoint multiPoint); static double[] bbox(@NonNull Polygon polygon); static double[] bbox(@NonNull MultiLineString multiLineString); static double[] bbox(MultiPolygon multiPolygon); static double[] bbox(GeoJson geoJson); static double[] bbox(FeatureCollection featureCollection); static double[] bbox(Feature feature); static double[] bbox(Geometry geometry); static Feature bboxPolygon(@NonNull BoundingBox boundingBox); static Feature bboxPolygon(@NonNull BoundingBox boundingBox,
                                    @Nullable JsonObject properties,
                                    @Nullable String id); static Feature bboxPolygon(@NonNull double[] bbox); static Feature bboxPolygon(@NonNull double[] bbox,
                                    @Nullable JsonObject properties,
                                    @Nullable String id); static Polygon envelope(GeoJson geoJson); static BoundingBox square(@NonNull BoundingBox boundingBox); static double area(@NonNull Feature feature); static double area(@NonNull FeatureCollection featureCollection); static double area(@NonNull Geometry geometry); static Feature center(Feature feature,
                               @Nullable JsonObject properties,
                               @Nullable String id); static Feature center(Feature feature); static Feature center(FeatureCollection featureCollection,
                               @Nullable JsonObject properties,
                               @Nullable String id); static Feature center(FeatureCollection featureCollection); static double EARTH_RADIUS; }
@Test public void lineDistance_returnsZeroWhenRouteIsPoint() throws Exception { List<Point> coords = new ArrayList<>(); coords.add(Point.fromLngLat(1.0, 1.0)); LineString lineString = LineString.fromLngLats(coords); double distance = TurfMeasurement.length(lineString, TurfConstants.UNIT_METERS); assertEquals(0d, distance, DELTA); }
@Test public void testLineDistanceWithGeometries() throws IOException, TurfException { Feature route1 = Feature.fromJson(loadJsonFixture(LINE_DISTANCE_ROUTE_ONE)); Feature route2 = Feature.fromJson(loadJsonFixture(LINE_DISTANCE_ROUTE_TWO)); assertEquals(202, Math.round(TurfMeasurement.length((LineString) route1.geometry(), TurfConstants.UNIT_MILES))); Assert.assertEquals(741.7787396994203, TurfMeasurement.length((LineString) route2.geometry(), TurfConstants.UNIT_KILOMETERS), DELTA); }
@Test public void testLineDistancePolygon() throws IOException, TurfException { Feature feature = Feature.fromJson(loadJsonFixture(LINE_DISTANCE_POLYGON)); assertEquals(5599, Math.round(1000 * TurfMeasurement.length((Polygon) feature.geometry(), TurfConstants.UNIT_KILOMETERS))); }
@Test public void testLineDistanceMultiLineString() throws IOException, TurfException { Feature feature = Feature.fromJson(loadJsonFixture(LINE_DISTANCE_MULTILINESTRING)); assertEquals(4705d, Math.round(1000 * TurfMeasurement.length((MultiLineString) feature.geometry(), TurfConstants.UNIT_KILOMETERS)), DELTA); }