を私は同じ計算に問題がありました。私はOwen Godfreyによって提案された構想が好きですhere、さらにフェルナンドhereは、緯度が経度とは異なるように包まれ、異なる範囲を持っているという事実を逃しました。私の提案を明確にするために、私はあなたの自己によってそれを確認することができるようにテストで投稿します。
import XCTest
import MapKit
// MARK - The Solution
extension CLLocationDegrees {
enum WrapingDimension: Double {
case latitude = 180
case longitude = 360
}
/// Standardises and angle to [-180 to 180] or [-90 to 90] degrees
func wrapped(diemension: WrapingDimension) -> CLLocationDegrees {
let length = diemension.rawValue
let halfLenght = length/2.0
let angle = self.truncatingRemainder(dividingBy: length)
switch diemension {
case .longitude:
// return angle < -180.0 ? 360.0 + angle : angle > 180.0 ? -360.0 + angle : angle
return angle < -halfLenght ? length + angle : angle > halfLenght ? -length + angle : angle
case .latitude:
// return angle < -90.0 ? -180.0 - angle : angle > 90.0 ? 180.0 - angle : angle
return angle < -halfLenght ? -length - angle : angle > halfLenght ? length - angle : angle
}
}
}
extension MKCoordinateRegion {
/// confirms that a region contains a location
func contains(_ coordinate: CLLocationCoordinate2D) -> Bool {
let deltaLat = abs((self.center.latitude - coordinate.latitude).wrapped(diemension: .latitude))
let deltalong = abs((self.center.longitude - coordinate.longitude).wrapped(diemension: .longitude))
return self.span.latitudeDelta/2.0 >= deltaLat && self.span.longitudeDelta/2.0 >= deltalong
}
}
// MARK - Unit tests
class MKCoordinateRegionContaingTests: XCTestCase {
func testRegionContains() {
var region = MKCoordinateRegionMake(CLLocationCoordinate2DMake(0, 0), MKCoordinateSpan(latitudeDelta: 1, longitudeDelta: 1))
var coords = CLLocationCoordinate2DMake(0, 0)
XCTAssert(region.contains(coords))
coords = CLLocationCoordinate2DMake(0.5, 0.5)
XCTAssert(region.contains(coords))
coords = CLLocationCoordinate2DMake(-0.5, 0.5)
XCTAssert(region.contains(coords))
coords = CLLocationCoordinate2DMake(0.5, 0.5000001)
XCTAssert(!region.contains(coords)) // NOT Contains
coords = CLLocationCoordinate2DMake(0.5, -0.5000001)
XCTAssert(!region.contains(coords)) // NOT Contains
coords = CLLocationCoordinate2DMake(1, 1)
XCTAssert(!region.contains(coords)) // NOT Contains
region = MKCoordinateRegionMake(CLLocationCoordinate2DMake(0, 180), MKCoordinateSpan(latitudeDelta: 1, longitudeDelta: 1))
coords = CLLocationCoordinate2DMake(0, 180.5)
XCTAssert(region.contains(coords))
coords.longitude = 179.5
XCTAssert(region.contains(coords))
coords.longitude = 180.5000001
XCTAssert(!region.contains(coords)) // NOT Contains
coords.longitude = 179.5000001
XCTAssert(region.contains(coords))
coords.longitude = 179.4999999
XCTAssert(!region.contains(coords)) // NOT Contains
region = MKCoordinateRegionMake(CLLocationCoordinate2DMake(90, -180), MKCoordinateSpan(latitudeDelta: 1, longitudeDelta: 1))
coords = CLLocationCoordinate2DMake(90.5, -180.5)
XCTAssert(region.contains(coords))
coords = CLLocationCoordinate2DMake(89.5, -180.5)
XCTAssert(region.contains(coords))
coords = CLLocationCoordinate2DMake(90.50000001, -180.5)
XCTAssert(!region.contains(coords)) // NOT Contains
coords = CLLocationCoordinate2DMake(89.50000001, -180.5)
XCTAssert(region.contains(coords))
coords = CLLocationCoordinate2DMake(89.49999999, -180.5)
XCTAssert(!region.contains(coords)) // NOT Contains
}
func testStandardAngle() {
var angle = 180.5.wrapped(diemension: .longitude)
var required = -179.5
XCTAssert(self.areAngleEqual(angle, required))
angle = 360.5.wrapped(diemension: .longitude)
required = 0.5
XCTAssert(self.areAngleEqual(angle, required))
angle = 359.5.wrapped(diemension: .longitude)
required = -0.5
XCTAssert(self.areAngleEqual(angle, required))
angle = 179.5.wrapped(diemension: .longitude)
required = 179.5
XCTAssert(self.areAngleEqual(angle, required))
angle = 90.5.wrapped(diemension: .latitude)
required = 89.5
XCTAssert(self.areAngleEqual(angle, required))
angle = 90.5000001.wrapped(diemension: .latitude)
required = 89.4999999
XCTAssert(self.areAngleEqual(angle, required))
angle = -90.5.wrapped(diemension: .latitude)
required = -89.5
XCTAssert(self.areAngleEqual(angle, required))
angle = -90.5000001.wrapped(diemension: .latitude)
required = -89.4999999
XCTAssert(self.areAngleEqual(angle, required))
}
/// compare doubles with presition to 8 digits after the decimal point
func areAngleEqual(_ a:Double, _ b:Double) -> Bool {
let presition = 0.00000001
let equal = Int(a/presition) == Int(b/presition)
print(String(format:"%14.9f %@ %14.9f", a, equal ? "==" : "!=", b))
return equal
}
}
これはうまくいくとは思わない： 1.なぜlocation.latitude> = northWestCorner.latitudeですか？それはsounthEastCorner.latitudeではありませんか？ 2.計算された最小経度が-2.0で、最大経度が2.0で、location.longitudeが359.0の場合はどうなりますか？ – lichen19853
@ lichen19853は、約360度のテストで失敗するということは間違いありません。もう少し正確な解決方法については、私の答えを見てください。 – MarekR