var RiderLayer : CALayer = CALayer()
let shapeLayer_Lap1 :CAShapeLayer = CAShapeLayer()
    var img_rider :UIImage = UIImage()
    img_rider = UIImage(named: "red_dot")!
    RiderLayer.frame.size = CGSize(width: img_rider.size.width, height: img_rider1.size.height)
    RiderLayer.frame.origin.x = 0.0
    RiderLayer.frame.origin.y = 0
    RiderLayer.contents = img_rider1.cgImage
    RiderLayer.zPosition = 1
    RiderLayer.needsDisplayOnBoundsChange = false
    shapeLayer_Lap1.addSublayer(RiderLayer)