RandomLine.swift

func drawLine(x:Int, y:Int, width:Int, height:Int) {
        let leftToRight:Bool = Bool.random()
        
         let path = UIBezierPath()
        
        if(leftToRight) {
            path.move(to: CGPoint(x: x, y: y))
            path.addLine(to: CGPoint(x: x + width, y: y + height))
        } else {
            path.move(to: CGPoint(x: x + width, y: y))
            path.addLine(to: CGPoint(x: x, y: y + height))
        }
        
        path.close()
        UIColor.red.set()
        path.stroke()
        path.fill()
}