ios – Discover nearest factors between two CGPoints

Looking for nearest factors between begin and finish level.

Factors Array :

let pointsArray = [(10.0, 10.0), (70.0, 10.0), (10.0, 200.0), (70.0, 200.0), (73.0, 10.0), (133.0, 10.0), (73.0, 200.0), (133.0, 200.0), (135.5, 10.0), (195.5, 10.0), (135.5, 200.0), (195.5, 200.0), (198.5, 10.0), (258.5, 10.0), (198.5, 200.0), (258.5, 200.0), (261.5, 10.0), (321.5, 10.0), (261.5, 200.0), (321.5, 200.0), (324.0, 10.0), (384.0, 10.0), (324.0, 200.0), (384.0, 200.0), (387.0, 10.0), (447.0, 10.0), (387.0, 200.0), (447.0, 200.0), (450.0, 10.0), (510.0, 10.0), (450.0, 200.0), (510.0, 200.0), (512.5, 10.0), (572.5, 10.0), (512.5, 200.0), (572.5, 200.0), (575.5, 10.0), (635.5, 10.0), (575.5, 200.0), (635.5, 200.0), (638.5, 10.0), (698.5, 10.0), (638.5, 200.0), (698.5, 200.0), (701.0, 10.0), (761.0, 10.0), (701.0, 200.0), (761.0, 200.0), (764.0, 10.0), (824.0, 10.0), (764.0, 200.0), (824.0, 200.0), (10.0, 390.0), (70.0, 390.0), (73.0, 390.0), (133.0, 390.0), (135.5, 390.0), (195.5, 390.0), (198.5, 390.0), (258.5, 390.0), (261.5, 390.0), (321.5, 390.0), (324.0, 390.0), (384.0, 390.0), (387.0, 390.0), (447.0, 390.0), (450.0, 390.0), (510.0, 390.0), (512.5, 390.0), (572.5, 390.0), (575.5, 390.0), (635.5, 390.0), (638.5, 390.0), (698.5, 390.0), (701.0, 390.0), (761.0, 390.0), (764.0, 390.0), (824.0, 390.0), (10.0, 580.0), (70.0, 580.0), (73.0, 580.0), (133.0, 580.0), (135.5, 580.0), (195.5, 580.0), (198.5, 580.0), (258.5, 580.0)]

let startPoint = CGPoint(x: 80, y: 20)
let endPoint = CGPoint(x: 170, y: 440)

Right here I’m looking for factors between begin and finish factors from the present factors array.

utilizing this under extension distance from particular level am getting however I’m unable to get solely particular factors between startPoint and Endpoint

extension CGPoint {
    func distance(to level: CGPoint) -> CGFloat {
        return sqrt(pow(x - level.x, 2) + pow(y - level.y, 2))
    }
}