MapKit 図形をかく

Rectangle (Polygon) を書く

swift

 @State private var bounds: [[CLLocationCoordinate2D]] = []
 @State private var boundLabels: [String] = []

    ForEach(0..<bounds.count, id: \.self) { i in
     MapPolygon(coordinates: bounds[i])
      .foregroundStyle(.clear)
      .stroke(.red, lineWidth: 3)
    }
    ForEach(0..<bounds.count, id: \.self) { i in
     Annotation(boundLabels[i], coordinate: bounds[i][1], content: {})
    }


// の元ネタ
  [
   CLLocationCoordinate2D(latitude: yMin, longitude: xMin),
   CLLocationCoordinate2D(latitude: yMin, longitude: xMax),
   CLLocationCoordinate2D(latitude: yMax, longitude: xMax),
   CLLocationCoordinate2D(latitude: yMax, longitude: xMin),
  ]