import SwiftUI struct ThreeColorView: View { static let red_x: CGFloat = UIScreen.main.bounds.width/2 static let red_y: CGFloat = UIScreen.main.bounds.height/3 @State private var redPosition: CGPoint = .init(x: red_x, y: red_y) @State private var greenPosition: CGPoint = .init(x: red_x - 30, y: red_y + 60) @State private var bluePosition: CGPoint = .init(x: red_x + 30, y: red_y + 60) var body: some View { ZStack { Color.black.ignoresSafeArea() Circle() .fill(Color(.systemRed)) .frame(width: 200, height: 200) .position(redPosition) .gesture( DragGesture() .onChanged({ value in redPosition = value.location }) ) Circle() .fill(Color(.systemGreen)) .frame(width: 200, height: 200) .position(greenPosition) .gesture( DragGesture() .onChanged({ value in greenPosition = value.location }) ) .blendMode(.lighten) Circle() .fill(Color(.systemBlue)) .frame(width: 200, height: 200) .position(bluePosition) .gesture( DragGesture() .onChanged({ value in bluePosition = value.location }) ) .blendMode(.lighten) } } }