/*
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* Copyright (C) 2015 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.camera.data;
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import java.util.Locale;
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/**
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* Encapsulate latitude and longitude into a single location object.
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*
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* TODO: Add tests. Consider removing "ZERO" location and using UNKNOWN.
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*/
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public final class Location {
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public static final Location UNKNOWN = new Location(Double.NaN, Double.NaN);
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public static final Location ZERO = new Location(0.0, 0.0);
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private final double mLatitude;
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private final double mLongitude;
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private Location(double latitude, double longitude) {
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mLatitude = latitude;
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mLongitude = longitude;
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}
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public double getLatitude() {
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return mLatitude;
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}
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public double getLongitude() {
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return mLongitude;
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}
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public String getLocationString() {
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return String.format(Locale.getDefault(), "%f, %f", mLatitude,
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mLongitude);
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}
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public boolean isValid() {
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return !this.equals(UNKNOWN) && !this.equals(ZERO)
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&& (mLatitude >= -90.0 && mLongitude <= 90.0)
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&& (mLongitude >= -180.0 && mLongitude <= 180.0);
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}
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@Override
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public String toString() {
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return "Location: " + getLocationString();
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}
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@Override
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public boolean equals(Object o) {
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if (this == o) {
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return true;
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}
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if (o == null || getClass() != o.getClass()) {
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return false;
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}
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Location location = (Location) o;
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if (Double.compare(location.mLatitude, mLatitude) != 0) {
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return false;
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}
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if (Double.compare(location.mLongitude, mLongitude) != 0) {
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return false;
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}
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return true;
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}
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@Override
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public int hashCode() {
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int result;
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long temp;
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temp = Double.doubleToLongBits(mLatitude);
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result = (int) (temp ^ (temp >>> 32));
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temp = Double.doubleToLongBits(mLongitude);
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result = 31 * result + (int) (temp ^ (temp >>> 32));
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return result;
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}
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public static Location from(double latitude, double longitude) {
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if (Double.isNaN(latitude) || Double.isNaN(longitude)
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|| Double.isInfinite(latitude) || Double.isInfinite(longitude)
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|| (latitude == 0.0 && longitude == 0.0)) {
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return UNKNOWN;
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}
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return new Location(latitude, longitude);
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}
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}
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