Сhange radius for UibezierPath swift - ios

Question

I drew an arc and added action to it. How can I use this action to change the radius of the arc ?? (Example: there was a radius of 30, clicked on the arc and +10. Clicked again and -10).I tried to change the radius but there was no result.While this does not move and I do not quite understand why this is so.
Here is the full class code.
#IBDesignable class circleView: UIView {
typealias ArcAction = () -> Void
struct ArcInfo {
var outlinePath: UIBezierPath
var action: ArcAction
}
private var arcInfos: [ArcInfo]!
let bgShapeLayer = CAShapeLayer()
var redRadius: Float?
required init?(coder: NSCoder) {
super.init(coder: coder)
let recognizer = UITapGestureRecognizer(target: self, action: #selector(tap(_ :)))
addGestureRecognizer(recognizer)
}
override func draw(_ rect: CGRect) {
let fullCircle = CGFloat.pi * 2
let arcAngle = fullCircle * 1.5 / 6
var lastArcAngle = CGFloat.pi / 4.0 + CGFloat.pi //-CGFloat.pi
arcInfos = []
// Red Arc
func redArc( action: #escaping ArcAction) {
let path = UIBezierPath(arcCenter: CGPoint(x: rect.width/2, y: rect.height/2), radius: CGFloat(redRadius ?? 46), startAngle: lastArcAngle, endAngle: lastArcAngle + arcAngle, clockwise: true)
#colorLiteral(red: 0.7450980392, green: 0.007843137255, blue: 0.262745098, alpha: 1).setStroke()
path.lineWidth = 10
path.stroke()
lastArcAngle += arcAngle
// separators
#colorLiteral(red: 0.927436769, green: 0.9490308166, blue: 0.967099607, alpha: 1).setStroke()
let outlinePath = hitTestPath(for: path)
outlinePath.lineWidth = 3
outlinePath.stroke()
arcInfos.append(ArcInfo(outlinePath: outlinePath, action: action))
}
//Add Arc
redArc {
self.redRadius = 56
}
}
#objc func tap(_ recognizer: UITapGestureRecognizer) {
let location = recognizer.location(in: self)
if let hitPath = (arcInfos.first { $0.outlinePath.contains(location) }) {
hitPath.action()
print(hitPath)
}
}
func hitTestPath(for path: UIBezierPath) -> UIBezierPath {
let pathCopy = path.cgPath.copy(strokingWithWidth: 15, lineCap: .butt, lineJoin: .miter, miterLimit: 0)
return UIBezierPath(cgPath: pathCopy)
}
}

Answer 1

You need to trigger a UI update...
if let hitPath = (arcInfos.first { $0.outlinePath.contains(location) }) {
hitPath.action()
// add this line
setNeedsDisplay()
print(hitPath)
}
Note: your code as-is starts with a radius of 46... on tap, with that line added, it redraws itself with a radius of 56.