in metropolis/utils/data_classes.py [0:0]
def draw_line(p1, p2, color):
line = p1.reshape(3, -1) + t * (p2 - p1).reshape(3, -1)
line = view_points_eq(line, img_size[0], img_size[1])
for line in split_poly_eq(line, img_size[0]):
axis.plot(line[0, :], line[1, :], color=color, linewidth=linewidth)