지리 공간적 데이터 - Kotlin SDK

val circle1 = GeoCircle.create(
    center = GeoPoint.create(47.8, -122.6),
    radius = Distance.fromKilometers(44.4)
)
val circle2 = GeoCircle.create(
    center = GeoPoint.create(47.3, -121.9),
    radius = Distance.fromDegrees(0.25)
)

val box1 = GeoBox.create(
    bottomLeft = GeoPoint.create(47.3, -122.7),
    topRight = GeoPoint.create(48.1, -122.1)
)
val box2 = GeoBox.create(
    bottomLeft = GeoPoint.create(47.5, -122.4),
    topRight = GeoPoint.create(47.9, -121.8)
)

// Create a basic polygon
val basicPolygon = GeoPolygon.create(
    listOf(
        GeoPoint.create(48.0, -122.8),
        GeoPoint.create(48.2, -121.8),
        GeoPoint.create(47.6, -121.6),
        GeoPoint.create(47.0, -122.0),
        GeoPoint.create(47.2, -122.6),
        GeoPoint.create(48.0, -122.8)
    )
)
// Create a polygon with a single hole
val outerRing = listOf(
        GeoPoint.create(48.0, -122.8),
        GeoPoint.create(48.2, -121.8),
        GeoPoint.create(47.6, -121.6),
        GeoPoint.create(47.0, -122.0),
        GeoPoint.create(47.2, -122.6),
        GeoPoint.create(48.0, -122.8)
)
val hole1 = listOf(
        GeoPoint.create(47.8, -122.6),
        GeoPoint.create(47.7, -122.2),
        GeoPoint.create(47.4, -122.6),
        GeoPoint.create(47.6, -122.5),
        GeoPoint.create(47.8, -122.6)
)
val polygonWithOneHole = GeoPolygon.create(outerRing, hole1)
// Add a second hole to the polygon
val hole2 = listOf(
    GeoPoint.create(47.55, -122.05),
    GeoPoint.create(47.5, -121.9),
    GeoPoint.create(47.3, -122.1),
    GeoPoint.create(47.55, -122.05)
)
val polygonWithTwoHoles = GeoPolygon.create(outerRing, hole1, hole2)

class CustomGeoPoint : EmbeddedRealmObject {
    constructor(latitude: Double, longitude: Double) {
        coordinates.apply {
            add(longitude)
            add(latitude)
        }
    }
    // Empty constructor required by Realm
    constructor() : this(0.0, 0.0)
    // Name and type required by Realm
    var coordinates: RealmList<Double> = realmListOf()
    // Name, type, and value required by Realm
    private var type: String = "Point"
    @Ignore
    var latitude: Double
        get() = coordinates[1]
        set(value) {
            coordinates[1] = value
        }
    @Ignore
    var longitude: Double
        get() = coordinates[0]
        set(value) {
            coordinates[0] = value
        }
}

class Company : RealmObject {
    @PrimaryKey
    var _id: ObjectId = ObjectId()
    var location: CustomGeoPoint? = null
}

realm.writeBlocking {
    copyToRealm(
        Company().apply {
            location = CustomGeoPoint(47.68, -122.35)
        }
    )
    copyToRealm(
        Company().apply {
            location = CustomGeoPoint(47.9, -121.85)
        }
    )
}