segment_angle_rad = 2 * np.pi / circle_segments
chord_length = calc_chord_length(.5, segment_angle_rad)
newcenter = (.5 * chord_length, .5 * np.cos(segment_angle_rad / 2))
circle.center = newcenter[0], newcenter[1]
line = ax.plot([0, chord_length], [0, 0], '.', color='yellow',
markersize=15)[0]
fig.savefig(os.path.join(figure_directory, 'fig2.png'))
#%%
# Roll the circle to the right, each time leaving an arc on the x-axis and
# removing the arc from the circle. Repeat until circle is all used up.
circle.theta1 = 270 - segment_angle_deg / 2
circle.theta2 = circle.theta1
for k in range(0, circle_segments - 1):
arc = Arc(newcenter,
1,
1,
0,
270 - segment_angle_deg / 2,
270 + segment_angle_deg / 2,
lw=clw,
edgecolor=ccol)
ax.add_patch(arc)
newcenter = (newcenter[0] + chord_length, newcenter[1])
circle.theta2 = circle.theta2 - segment_angle_deg
circle.center = newcenter
