print 'could not find corner candidates for "%s"' % filepath
# Find the "true corners."
try:
piece.find_true_corners()
if args['--plot']:
corner_xs = [c[0] for c in piece.corners]
corner_ys = [c[1] for c in piece.corners]
ax1.plot(corner_xs, corner_ys, 'og', markersize=8)
piece_data['corners'] = [c.tolist() for c in piece.corners]
except:
print 'could not find true corners for "%s"' % filepath
# Determine the four sides: paths along the outline that connect corners.
try:
piece.find_sides()
if args['--plot']:
colors = ('r', 'g', 'b', 'cyan')
for index, side in enumerate(piece.sides):
x = [s[0] for s in side]
y = [s[1] for s in side]
ax1.plot(x, y, color=colors[index])
piece_data['sides'] = [s.tolist() for s in piece.sides]
except:
print 'could not find sides for "%s"' % filepath
# Get length of each side and label.
try:
piece.find_side_lengths()
piece_data['side_lengths'] = piece.side_lengths
except:
