Nick Pelly | 6fa9ad4 | 2012-07-16 12:18:23 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2012 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | package android.location; |
| 18 | |
Mathew Inwood | 735497e | 2018-08-09 16:44:32 +0100 | [diff] [blame] | 19 | import android.annotation.UnsupportedAppUsage; |
Nick Pelly | 6fa9ad4 | 2012-07-16 12:18:23 -0700 | [diff] [blame] | 20 | import android.os.Parcel; |
| 21 | import android.os.Parcelable; |
| 22 | |
| 23 | /** |
Nick Pelly | 4e31c4f | 2012-08-13 19:35:39 -0700 | [diff] [blame] | 24 | * Represents a geographical boundary, also known as a geofence. |
| 25 | * |
Scott Main | 8761e14 | 2012-10-29 19:11:41 -0700 | [diff] [blame] | 26 | * <p>Currently only circular geofences are supported and they do not support altitude changes. |
Laurent Tu | 7ab7f53 | 2012-10-30 14:54:02 -0700 | [diff] [blame] | 27 | * |
| 28 | * @hide |
Nick Pelly | 6fa9ad4 | 2012-07-16 12:18:23 -0700 | [diff] [blame] | 29 | */ |
| 30 | public final class Geofence implements Parcelable { |
| 31 | /** @hide */ |
| 32 | public static final int TYPE_HORIZONTAL_CIRCLE = 1; |
| 33 | |
| 34 | private final int mType; |
| 35 | private final double mLatitude; |
| 36 | private final double mLongitude; |
| 37 | private final float mRadius; |
| 38 | |
| 39 | /** |
Scott Main | 8761e14 | 2012-10-29 19:11:41 -0700 | [diff] [blame] | 40 | * Create a circular geofence (on a flat, horizontal plane). |
Nick Pelly | 4e31c4f | 2012-08-13 19:35:39 -0700 | [diff] [blame] | 41 | * |
Victoria Lease | 3dffb8c | 2012-10-30 10:44:14 -0700 | [diff] [blame] | 42 | * @param latitude latitude in degrees, between -90 and +90 inclusive |
| 43 | * @param longitude longitude in degrees, between -180 and +180 inclusive |
Nick Pelly | 6fa9ad4 | 2012-07-16 12:18:23 -0700 | [diff] [blame] | 44 | * @param radius radius in meters |
| 45 | * @return a new geofence |
| 46 | * @throws IllegalArgumentException if any parameters are out of range |
| 47 | */ |
| 48 | public static Geofence createCircle(double latitude, double longitude, float radius) { |
| 49 | return new Geofence(latitude, longitude, radius); |
| 50 | } |
| 51 | |
| 52 | private Geofence(double latitude, double longitude, float radius) { |
| 53 | checkRadius(radius); |
| 54 | checkLatLong(latitude, longitude); |
| 55 | mType = TYPE_HORIZONTAL_CIRCLE; |
| 56 | mLatitude = latitude; |
| 57 | mLongitude = longitude; |
| 58 | mRadius = radius; |
| 59 | } |
| 60 | |
| 61 | /** @hide */ |
| 62 | public int getType() { |
| 63 | return mType; |
| 64 | } |
| 65 | |
| 66 | /** @hide */ |
| 67 | public double getLatitude() { |
| 68 | return mLatitude; |
| 69 | } |
| 70 | |
| 71 | /** @hide */ |
| 72 | public double getLongitude() { |
| 73 | return mLongitude; |
| 74 | } |
| 75 | |
| 76 | /** @hide */ |
| 77 | public float getRadius() { |
| 78 | return mRadius; |
| 79 | } |
| 80 | |
| 81 | private static void checkRadius(float radius) { |
| 82 | if (radius <= 0) { |
| 83 | throw new IllegalArgumentException("invalid radius: " + radius); |
| 84 | } |
| 85 | } |
| 86 | |
| 87 | private static void checkLatLong(double latitude, double longitude) { |
| 88 | if (latitude > 90.0 || latitude < -90.0) { |
| 89 | throw new IllegalArgumentException("invalid latitude: " + latitude); |
| 90 | } |
| 91 | if (longitude > 180.0 || longitude < -180.0) { |
| 92 | throw new IllegalArgumentException("invalid longitude: " + longitude); |
| 93 | } |
| 94 | } |
| 95 | |
| 96 | private static void checkType(int type) { |
| 97 | if (type != TYPE_HORIZONTAL_CIRCLE) { |
| 98 | throw new IllegalArgumentException("invalid type: " + type); |
| 99 | } |
| 100 | } |
| 101 | |
Mathew Inwood | 735497e | 2018-08-09 16:44:32 +0100 | [diff] [blame] | 102 | @UnsupportedAppUsage |
Jeff Sharkey | 9e8f83d | 2019-02-28 12:06:45 -0700 | [diff] [blame^] | 103 | public static final @android.annotation.NonNull Parcelable.Creator<Geofence> CREATOR = new Parcelable.Creator<Geofence>() { |
Nick Pelly | 6fa9ad4 | 2012-07-16 12:18:23 -0700 | [diff] [blame] | 104 | @Override |
| 105 | public Geofence createFromParcel(Parcel in) { |
| 106 | int type = in.readInt(); |
| 107 | double latitude = in.readDouble(); |
| 108 | double longitude = in.readDouble(); |
| 109 | float radius = in.readFloat(); |
| 110 | checkType(type); |
| 111 | return Geofence.createCircle(latitude, longitude, radius); |
| 112 | } |
| 113 | @Override |
| 114 | public Geofence[] newArray(int size) { |
| 115 | return new Geofence[size]; |
| 116 | } |
| 117 | }; |
| 118 | |
| 119 | @Override |
| 120 | public int describeContents() { |
| 121 | return 0; |
| 122 | } |
| 123 | |
| 124 | @Override |
| 125 | public void writeToParcel(Parcel parcel, int flags) { |
| 126 | parcel.writeInt(mType); |
| 127 | parcel.writeDouble(mLatitude); |
| 128 | parcel.writeDouble(mLongitude); |
| 129 | parcel.writeFloat(mRadius); |
| 130 | } |
| 131 | |
| 132 | private static String typeToString(int type) { |
| 133 | switch (type) { |
| 134 | case TYPE_HORIZONTAL_CIRCLE: |
| 135 | return "CIRCLE"; |
| 136 | default: |
| 137 | checkType(type); |
| 138 | return null; |
| 139 | } |
| 140 | } |
| 141 | |
| 142 | @Override |
| 143 | public String toString() { |
| 144 | return String.format("Geofence[%s %.6f, %.6f %.0fm]", |
| 145 | typeToString(mType), mLatitude, mLongitude, mRadius); |
| 146 | } |
| 147 | |
| 148 | @Override |
| 149 | public int hashCode() { |
| 150 | final int prime = 31; |
| 151 | int result = 1; |
| 152 | long temp; |
| 153 | temp = Double.doubleToLongBits(mLatitude); |
| 154 | result = prime * result + (int) (temp ^ (temp >>> 32)); |
| 155 | temp = Double.doubleToLongBits(mLongitude); |
| 156 | result = prime * result + (int) (temp ^ (temp >>> 32)); |
| 157 | result = prime * result + Float.floatToIntBits(mRadius); |
| 158 | result = prime * result + mType; |
| 159 | return result; |
| 160 | } |
| 161 | |
Nick Pelly | 4e31c4f | 2012-08-13 19:35:39 -0700 | [diff] [blame] | 162 | /** |
| 163 | * Two geofences are equal if they have identical properties. |
| 164 | */ |
Nick Pelly | 6fa9ad4 | 2012-07-16 12:18:23 -0700 | [diff] [blame] | 165 | @Override |
| 166 | public boolean equals(Object obj) { |
| 167 | if (this == obj) |
| 168 | return true; |
| 169 | if (obj == null) |
| 170 | return false; |
| 171 | if (!(obj instanceof Geofence)) |
| 172 | return false; |
| 173 | Geofence other = (Geofence) obj; |
| 174 | if (mRadius != other.mRadius) |
| 175 | return false; |
| 176 | if (mLatitude != other.mLatitude) |
| 177 | return false; |
| 178 | if (mLongitude != other.mLongitude) |
| 179 | return false; |
| 180 | if (mType != other.mType) |
| 181 | return false; |
| 182 | return true; |
| 183 | } |
| 184 | } |