Swift 3：Hexagon不显示imageView

Question

我的六边形没有显示在imageView的中心，如何解决这个问题？这是我的代码。

 func roundedPolygonPath(rect: CGRect, lineWidth: CGFloat, sides: NSInteger, cornerRadius: CGFloat, rotationOffset: CGFloat = 0)
        -> UIBezierPath {
        let path = UIBezierPath()
        let theta: CGFloat = CGFloat(2.0 * M_PI) / CGFloat(sides) // How much to turn at every corner
        // let offset: CGFloat = cornerRadius * tan(theta / 2.0)     // Offset from which to start rounding corners
        let width = min(rect.size.width, rect.size.height)        // Width of the square

        let center = CGPoint(x: rect.origin.x + width + 10 / 2.0, y: rect.origin.y + width / 2.0)

        // Radius of the circle that encircles the polygon
        // Notice that the radius is adjusted for the corners, that way the largest outer
        // dimension of the resulting shape is always exactly the width - linewidth
        let radius = (width - lineWidth + cornerRadius - (cos(theta) * cornerRadius)) / 2.0

        // Start drawing at a point, which by default is at the right hand edge
        // but can be offset
        var angle = CGFloat(rotationOffset)

        let corner = CGPoint(center.x + (radius - cornerRadius) * cos(angle), center.y + (radius - cornerRadius) * sin(angle))
        path.move(to: CGPoint(corner.x + cornerRadius * cos(angle + theta), corner.y + cornerRadius * sin(angle + theta)))

        for _ in 0 ..< sides {
            angle += theta

            let corner = CGPoint(center.x + (radius - cornerRadius) * cos(angle), center.y + (radius - cornerRadius) * sin(angle))
            let tip = CGPoint(center.x + radius * cos(angle), center.y + radius * sin(angle))
            let start = CGPoint(corner.x + cornerRadius * cos(angle - theta), corner.y + cornerRadius * sin(angle - theta))
            let end = CGPoint(corner.x + cornerRadius * cos(angle + theta), corner.y + cornerRadius * sin(angle + theta))

            path.addLine(to: start)
            path.addQuadCurve(to: end, controlPoint: tip)
        }

        path.close()

        // Move the path to the correct origins
        let bounds = path.bounds
        let transform = CGAffineTransform(translationX: -bounds.origin.x + rect.origin.x + lineWidth / 2.0,
                                          y: -bounds.origin.y + rect.origin.y + lineWidth / 2.0)
        path.apply(transform)

        return path
}

Answer 1

这两个元素都有x和y等于0。尝试使用width属性来计算变换。