# **************************************************************************
# *
# * Authors: Federico P. de Isidro Gomez (fp.deisidro@cnb.csic.es) [1]
# *
# * [1] Centro Nacional de Biotecnologia, CSIC, Spain
# *
# * This program is free software; you can redistribute it and/or modify
# * it under the terms of the GNU General Public License as published by
# * the Free Software Foundation; either version 2 of the License, or
# * (at your option) any later version.
# *
# * This program is distributed in the hope that it will be useful,
# * but WITHOUT ANY WARRANTY; without even the implied warranty of
# * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# * GNU General Public License for more details.
# *
# * You should have received a copy of the GNU General Public License
# * along with this program; if not, write to the Free Software
# * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
# * 02111-1307 USA
# *
# * All comments concerning this program package may be sent to the
# * e-mail address 'scipion@cnb.csic.es'
# *
# **************************************************************************
"""
This module contains utils functions for xmipp tomo protocols
"""
import math
[docs]def calculateRotationAngleFromTM(ti):
""" This method calculates que tilt image rotation angle from its associated transformation matrix."""
tm = ti.getTransform().getMatrix()
cosRotationAngle = tm[0][0]
sinRotationAngle = tm[1][0]
rotationAngle = math.degrees(math.atan(sinRotationAngle/cosRotationAngle))
return rotationAngle