SwiftUI中的曲线和路径

Question

我想创建一个弯曲的路径，用形状来连接到标签栏，但我很难得到想要的外观。这就是我想要的外观。有什么办法可以创建这个形状吗？

Answer 1

我能够回答我自己的问题，使用自定义路径并将其附加到标签栏。

struct Arc: Shape {

    var height: CGFloat = 20
    var length: CGFloat = 80
    var startX: CGFloat = 0

    func path(in rect: CGRect) -> Path {
        var path = Path()
        let midPoint: CGFloat = (startX + length) / 2
        let apex1: CGFloat = (startX + midPoint) / 2
        let apex2: CGFloat = (midPoint + length) / 2

        path.move(to: CGPoint(x: startX, y: height))

        path.addCurve(to: CGPoint(x: midPoint, y: 0), control1: CGPoint(x: apex1, y:
            height), control2: CGPoint(x: apex1, y: 0))

        path.addCurve(to: CGPoint(x: length, y: height), control1: CGPoint(x: apex2, y: 0), control2: CGPoint(x: apex2, y: height))


        return path
    }
}