Converts pixels to points based on the screen scale

CGFloat+PixelConversion.swift

import UIKit

public extension CGFloat {
    /**
     Converts pixels to points based on the screen scale. For example, if you
     call CGFloat(1).pixelsToPoints() on an @2x device, this method will return 
     0.5.
     
     - parameter pixels: to be converted into points
     
     - returns: a points representation of the pixels
     */
    func pixelsToPoints() -> CGFloat {
        return self / UIScreen.main.scale
    }
    
    /**
     Returns the number of points needed to make a 1 pixel line, based on the
     scale of the device's screen.
     
     - returns: the number of points needed to make a 1 pixel line
     */
    static func onePixelInPoints() -> CGFloat {
        return CGFloat(1).pixelsToPoints()
    }
}

update
func pixelsToPoints() -> CGFloat { return self / UIScreen.main.scale }

Thanks! I've updated the original gist with your suggestion.