diff options
Diffstat (limited to 'framework/src/onos/utils')
3 files changed, 129 insertions, 2 deletions
diff --git a/framework/src/onos/utils/misc/src/main/java/org/onlab/util/GeoLocation.java b/framework/src/onos/utils/misc/src/main/java/org/onlab/util/GeoLocation.java new file mode 100644 index 00000000..7e546531 --- /dev/null +++ b/framework/src/onos/utils/misc/src/main/java/org/onlab/util/GeoLocation.java @@ -0,0 +1,85 @@ +/* + * Copyright 2014-2015 Open Networking Laboratory + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package org.onlab.util; + +import com.google.common.base.MoreObjects; + +/** + * Geo location specified in terms of longitude and latitude. + */ +public class GeoLocation { + + public static final double EARTH_RADIUS_KM = 6378.1370D; + + private final double latitude; + private final double longitude; + + /** + * Creates a new location using the specified coordinates. + * + * @param latitude latitude line + * @param longitude longitude line + */ + public GeoLocation(double latitude, double longitude) { + this.latitude = latitude; + this.longitude = longitude; + } + + /** + * Returns the latitude of this location. + * + * @return latitude + */ + public double latitude() { + return latitude; + } + + /** + * Returns the longitude of this location. + * + * @return longitude + */ + public double longitude() { + return longitude; + } + + /** + * Returns the distance in kilometers, between this location and another. + * + * @param other other geo location + * @return distance in kilometers + */ + public double kilometersTo(GeoLocation other) { + double hereLat = Math.toRadians(latitude); + double hereLon = Math.toRadians(longitude); + double thereLat = Math.toRadians(other.latitude); + double thereLon = Math.toRadians(other.longitude); + + double cos = Math.sin(hereLat) * Math.sin(thereLat) + + Math.cos(hereLat) * Math.cos(thereLat) * Math.cos(hereLon - thereLon); + return Math.acos(cos) * EARTH_RADIUS_KM; + } + + @Override + public String toString() { + return MoreObjects.toStringHelper(this) + .add("latitude", latitude) + .add("longitude", longitude) + .toString(); + } + +} diff --git a/framework/src/onos/utils/misc/src/main/java/org/onlab/util/Spectrum.java b/framework/src/onos/utils/misc/src/main/java/org/onlab/util/Spectrum.java index 42d76090..ca01c6e3 100644 --- a/framework/src/onos/utils/misc/src/main/java/org/onlab/util/Spectrum.java +++ b/framework/src/onos/utils/misc/src/main/java/org/onlab/util/Spectrum.java @@ -19,11 +19,12 @@ package org.onlab.util; * Telecom optical wavelength bands: O, E, S, C, L and U bands. * * See ITU-T G-Series Recommendations, Supplement 39 + * See ITU-T G.694.1 for center frequency definition. */ public final class Spectrum { - private Spectrum() { - } + // Center frequency + public static final Frequency CENTER_FREQUENCY = Frequency.ofTHz(193.1); // O band (original): 1260 to 1360 nm public static final Frequency O_BAND_MIN = Frequency.ofTHz(220.436); @@ -48,4 +49,7 @@ public final class Spectrum { // U band (ultra-long wavelength): 1625 to 1675 nm public static final Frequency U_BAND_MIN = Frequency.ofTHz(178.981); public static final Frequency U_BAND_MAX = Frequency.ofTHz(184.488); + + private Spectrum() { + } } diff --git a/framework/src/onos/utils/misc/src/test/java/org/onlab/util/GeoLocationTest.java b/framework/src/onos/utils/misc/src/test/java/org/onlab/util/GeoLocationTest.java new file mode 100644 index 00000000..a497bcc4 --- /dev/null +++ b/framework/src/onos/utils/misc/src/test/java/org/onlab/util/GeoLocationTest.java @@ -0,0 +1,38 @@ +/* + * Copyright 2014-2015 Open Networking Laboratory + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package org.onlab.util; + +import org.junit.Test; + +import static org.junit.Assert.assertEquals; + +/** + * Test suite of the geo location. + */ +public class GeoLocationTest { + + @Test + public void basics() { + GeoLocation nLoc = new GeoLocation(40.7127, -74.0059); + GeoLocation wLoc = new GeoLocation(38.9047, -77.0164); + + assertEquals("incorrect latitude", 40.7127, nLoc.latitude(), 0.0001); + assertEquals("incorrect longitude", -74.00598, nLoc.longitude(), 0.0001); + assertEquals("incorrect distance", 326.74, nLoc.kilometersTo(wLoc), 0.01); + } + +}
\ No newline at end of file |