CardViewWithShimmer

CardView.swift

import SwiftUI
import CoreMotion

struct CardView: View {
    
    @StateObject var motion = MotionManager()
    
    var body: some View {
        ZStack {
            Color.white
            Rectangle()
                .fill(LinearGradient(gradient: Gradient(colors: [Color.black, Color.white, Color.black]),
                                     startPoint: UnitPoint(x: motion.fy*2, y: motion.fy*2), // <- MoneyShot! 🤘
                                     endPoint: UnitPoint(x: motion.fx*8, y: motion.fx*8)))
                .cornerRadius(20)
                .frame(height: 250)
                .padding()
            Image(systemName: "applelogo")
                .font(Font.system(size: 32, weight: .bold, design: .rounded))
        }
        .shadow(color: .gray, radius: 20, x: 0, y: 30)
    }
}

MotionManager.swift

import SwiftUI
import CoreMotion

class MotionManager: ObservableObject {
  
    private let motionManager = CMMotionManager()

    var fx: CGFloat = 0
    var fy: CGFloat = 0
    var fz: CGFloat = 0

    var dx: Double = 0
    var dy: Double = 0
    var dz: Double = 0
    
    init() {
        motionManager.startDeviceMotionUpdates(to: .main) { data, error in
            guard let newData = data?.gravity else { return }

            self.dx = newData.x
            self.dy = newData.y
            self.dz = newData.z

            self.fx = CGFloat((newData.x))
            self.fy = CGFloat((newData.y))
            self.fz = CGFloat((newData.z))
            
            print("X: \(self.fx), Y: \(self.fy)")

            self.objectWillChange.send()
        }
    }
    
  // Used to stop motion manager if needed.
    func shutdown() {
        motionManager.stopDeviceMotionUpdates()
    }
}