A demonstration of using anchor points in SwiftUI

AnchorPointDemo.swift

import SwiftUI

struct ContentView: View {
  
  @State private var scale: CGFloat = 1
  @State private var angle = Angle(radians: 0)
  @State private var color = UIColor.blue
  
  var body: some View {
    Image(systemName: "heart.fill")
      .resizable()
      .frame(width: 100, height: 100)
      .rotationEffect(angle, anchor: .center)
      .scaleEffect(scale, anchor: .topLeading)
      .onTapGesture {
        self.scale = 2
        self.angle = Angle(radians: .pi)
        self.color = UIColor.red
      }
      .animation(Animation.spring().repeatForever(autoreverses: true))
  }
}

struct ContentView_Previews: PreviewProvider {
  static var previews: some View {
    ContentView()
  }
}