'CGPointMake' is unavailable in swift

I have a Gradient class which I am trying to convert to Swift 3 but I get the following error

> 'CGPointMake' is unavailable in swift

for

func configureGradientView() {

let color1 = topColor ?? self.tintColor as UIColor
let color2 = bottomColor ?? UIColor.black as UIColor
let colors: Array <AnyObject> = [ color1.cgColor, color2.cgColor ]
let layer = self.layer as! CAGradientLayer

layer.colors = colors
layer.startPoint = CGPointMake(startX, startY)
layer.endPoint = CGPointMake(endX, endY)
}

Can anyone help me out with what I can use instead of `CGPointMake`

Here's the full class;

@IBDesignable public class XGradientView: UIView {

@IBInspectable public var topColor: UIColor? {
didSet {
configureGradientView()
}
}
@IBInspectable public var bottomColor: UIColor? {
didSet {
configureGradientView()
}
}
@IBInspectable var startX: CGFloat = 0.0 {
didSet{
configureGradientView()
}
}
@IBInspectable var startY: CGFloat = 1.0 {
didSet{
configureGradientView()
}
}
@IBInspectable var endX: CGFloat = 0.0 {
didSet{
configureGradientView()
}
}
@IBInspectable var endY: CGFloat = 0.0 {
didSet{
configureGradientView()
}
}

public class func layeredClass() -> AnyClass {
return CAGradientLayer.self
}

public required init(coder aDecoder: NSCoder) {
super.init(coder: aDecoder)!
configureGradientView()
}

override init(frame: CGRect) {
super.init(frame: frame)
configureGradientView()
}

public override func tintColorDidChange() {
super.tintColorDidChange()
configureGradientView()
}

func configureGradientView() {

let color1 = topColor ?? self.tintColor as UIColor
let color2 = bottomColor ?? UIColor.black as UIColor
let colors: Array <AnyObject> = [ color1.cgColor, color2.cgColor ]
let layer = self.layer as! CAGradientLayer

layer.colors = colors
layer.startPoint = CGPointMake(startX, startY)
layer.endPoint = CGPointMake(endX, endY)
}
}

swift 3 emphasizes in use of named Parameters.

`CGPoint` Can be created like this.

let point = CGPoint(x: 0,y :0) // CGFloat, Double, Int

In swift you can create a `CGPoint` in swifty way `CGPoint(x: xPos, y:yPos)`.
So change your `CGPointMake(startX, startY)` to `CGPoint(x: startX, y: startY)`