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	#!/usr/bin/env python3
	# -- mode: python; coding: utf-8 --
	# vim: set ft=python:
	"""
	Read Numpy data from standard input, plot contact tractions and displacements.
	"""

	import sys
	import io

	import matplotlib.pyplot as plt
	import numpy as np

	__author__ = "Lucas Frérot"
	__copyright__ = (
	"Copyright (©) 2019-2020, EPFL (École Polytechnique Fédérale de Lausanne),"
	"\nLaboratory (LSMS - Laboratoire de Simulation en Mécanique des Solides)"
	)
	__license__ = "AGPL"
	__email__ = "lucas.frerot@gmail.com"


	def load_stream(stream):
	"""
	Load numpy from binary stream (allows piping)

	Code from
	https://gist.github.com/CMCDragonkai/3c99fd4aabc8278b9e17f50494fcc30a
	"""
	np_magic = stream.read(6)
	# use the sys.stdin.buffer to read binary data
	np_data = stream.read()
	# read it all into an io.BytesIO object
	return io.BytesIO(np_magic + np_data)


	fig, (ax_traction, ax_displacement) = plt.subplots(1, 2)

	ax_traction.set_title('Traction')
	ax_displacement.set_title('Displacement')

	with load_stream(sys.stdin.buffer) as f_np:
	data = np.load(f_np)
	ax_traction.imshow(data['traction'])
	ax_displacement.imshow(data['displacement'])

	fig.set_size_inches(10, 6)
	fig.tight_layout()

	plt.show()