/usr/lib/python2.7/dist-packages/sardana/pool/poolcontrollers/Slit.py is in python-sardana 1.2.0-2.
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##
## This file is part of Sardana
##
## http://www.tango-controls.org/static/sardana/latest/doc/html/index.html
##
## Copyright 2011 CELLS / ALBA Synchrotron, Bellaterra, Spain
##
## Sardana is free software: you can redistribute it and/or modify
## it under the terms of the GNU Lesser General Public License as published by
## the Free Software Foundation, either version 3 of the License, or
## (at your option) any later version.
##
## Sardana 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 Lesser General Public License for more details.
##
## You should have received a copy of the GNU Lesser General Public License
## along with Sardana. If not, see <http://www.gnu.org/licenses/>.
##
##############################################################################
"""This module contains the definition of a slit pseudo motor controller
for the Sardana Device Pool"""
__all__ = ["Slit"]
__docformat__ = 'restructuredtext'
from sardana import DataAccess
from sardana.pool.controller import PseudoMotorController
from sardana.pool.controller import DefaultValue, Description, Access, Type
class Slit(PseudoMotorController):
"""A Slit pseudo motor controller for handling gap and offset pseudo
motors. The system uses to real motors sl2t (top slit) and sl2b (bottom
slit)"""
gender = "Slit"
model = "Default Slit"
organization = "Sardana team"
pseudo_motor_roles = "Gap", "Offset"
motor_roles = "sl2t", "sl2b"
ctrl_properties = { 'sign' : { Type : float,
Description : 'Gap = sign * calculated gap\nOffset = sign * calculated offet',
DefaultValue : 1 }, }
axis_attributes = { 'example' : { Type : int,
Access : DataAccess.ReadWrite,
Description : 'test purposes' }, }
def __init__(self, inst, props, *args, **kwargs):
PseudoMotorController.__init__(self, inst, props, *args, **kwargs)
self._log.debug("Created SLIT %s", inst)
self._example = {}
def CalcPhysical(self, index, pseudo_pos, curr_physical_pos):
half_gap = pseudo_pos[0]/2.0
if index == 1:
ret = self.sign * (pseudo_pos[1] + half_gap)
else:
ret = self.sign * (half_gap - pseudo_pos[1])
self._log.debug("Slit.CalcPhysical(%d, %s) -> %f", index, pseudo_pos, ret)
return ret
def CalcPseudo(self, index, physical_pos, curr_pseudo_pos):
gap = physical_pos[1] + physical_pos[0]
if index == 1:
ret = self.sign * gap
else:
ret = self.sign * (physical_pos[0] - gap/2.0)
return ret
def CalcAllPseudo(self, physical_pos, curr_pseudo_pos):
"""Calculates the positions of all pseudo motors that belong to the
pseudo motor system from the positions of the physical motors."""
gap = physical_pos[1] + physical_pos[0]
return (self.sign * gap,
self.sign * (physical_pos[0] - gap/2.0))
#def CalcAllPhysical(self, pseudo_pos, curr_physical_pos):
# """Calculates the positions of all motors that belong to the pseudo
# motor system from the positions of the pseudo motors."""
# half_gap = pseudo_pos[0]/2.0
# return (self.sign * (pseudo_pos[1] + half_gap),
# self.sign * (half_gap - pseudo_pos[1]))
def SetAxisExtraPar(self, axis, parameter, value):
self._example[axis] = value
def GetAxisExtraPar(self, axis, parameter):
return self._example.get(axis, -1)
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