swift – iOS SwiftUI – The way to place markers on photographs like google maps

Hello I’m engaged on a iOS model of a mission I did for Android and I’m attempting to position markers/annotations on a picture. I used to be capable of get some assist for the android model however I do not actually perceive the mathematics and the best way to do the identical in SwiftUI.

Proper now that is what I’ve setup in Swift –

import SwiftUI
import Kingfisher

struct ImageView: View {
    @StateObject var viewModel = viewModel()
    let index: Int
    @State var showSheet: Bool = false
    @State var present: Bool = false
    @State var currentAnnotationSelected: SelectedAnnotationModel?
    @State var showDialog: Bool = false
    @State var observe: String = ""
    @State var localY: CGFloat = 0
    @State var globalY: CGFloat = 0
    @State var localX: CGFloat = 0
    @State var globalX: CGFloat = 0
    var annotationIndex: Int = 0
    
    var physique: some View {
        VStack {
            
            KFImage.url(URL(string: viewModel.uri ?? ""))
                .placeholder {ProgressView()}
                .loadDiskFileSynchronously()
                .cacheMemoryOnly()
                .gesture(DragGesture(minimumDistance: 0, coordinateSpace: .native).onEnded { dragGesture in
                 self.localY = dragGesture.location.y
                 self.localX = dragGesture.location.x
                 showSheet = true
              })
        }
        .sheet(isPresented: $showSheet) {
            VStack {
                AnnotationNote(x: Int(self.localX), y: Int(self.localY))
            }
            .presentationDetents([.medium])
            .presentationDragIndicator(.seen)
            
        }
        .overlay {
            VStack{
                if(viewModel.annotations != [] && viewModel.annotations  != nil) {
                    
                    ForEach(Array((viewModel.annotations.enumerated())!), id: .offset) { index, annotation in
                        
                        Circle()
                            .body(width: 15, peak: 15)
                            .place(x: 100, y: 100)
                        //.place(x: CGFloat(annotation.coordinateX), y: CGFloat(annotation.coordinateY))
                            .onTapGesture {
                                currentAnnotationSelected = SelectedAnnotationModel(index: index, particulars: annotation)
                                self.showSheet = true
                            }
                    }
                }
            }
        }
    }
}

It is giving me 2 points although – 1. The markers usually are not displaying the place I clicked and a couple of. I want the android and iOS variations to each present the markers accurately for a similar picture on any gadget, so I am undecided the best way to do those self same calculations in swift? – Android Model