PieChartCell.swift

struct PieChartCell: Shape {
    let startAngle: Angle
    let endAngle: Angle
   func path(in rect: CGRect) -> Path {
        let center = CGPoint.init(x: (rect.origin.x + rect.width)/2, y: (rect.origin.y + rect.height)/2)
    let radii = min(center.x, center.y)
        let path = Path { p in
            p.addArc(center: center,
                     radius: radii,
                     startAngle: startAngle,
                     endAngle: endAngle,
                     clockwise: true)
            p.addLine(to: center)
        }
        return path
   }
}