var lineWidth : CGFloat
The width of the stroked path.
var lineCap : CGLineCap
The endpoint style of a line.
var lineJoin : CGLineJoin
The join type of a line.
var miterLimit : CGFloat
A threshold used to determine whether to use a bevel instead of a miter at a join.
var dash: [CGFloat]
The lengths of painted and unpainted segments used to make a dashed line.