curling_centre_line()
for more
information)The hack line connects the two footholds at each hack. It should be anchored
at the terminus of the centre line (see curling_centre_line()
for more
information)
curling_hack_line(line_thickness = 0, hack_width = 0)
A data frame containing the bounding box of the hack line
The thickness of the hack line
The width of the hack, measured from the outside of one foothold to the outside of the other