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#!/usr/bin/env python
#
# Shift the detector by a given amount
#
# Copyright (c) 2016 Deutsches Elektronen-Synchrotron DESY,
# a research centre of the Helmholtz Association.
#
# Author:
# 2016 Thomas White <taw@physics.org>
#
import sys
import optparse
import os
import re
op = optparse.OptionParser(usage="%prog input.geom xshift yshift")
op.add_option('', '--output', action='store', type='string', dest='ofn',
help="Output geometry file")
op.add_option('', '--pixels', action='store_true', dest='px',
help="Specify shifts in pixel units")
op.add_option('', '--mm', action='store_false', dest='px',
help="Specify shifts in millimeters (this is the default)")
op.add_option('', '--beam', action='store_true', dest='beam',
help="Specify shift of X-ray beam")
op.add_option('', '--detector', action='store_false', dest='beam',
help="Specify shift of detector (this is the default)")
opt,args = op.parse_args(sys.argv)
if len(args) < 3:
print 'Usage: %s input.geom xshift yshift' % args[0]
sys.exit(1)
geom = args[1]
if not opt.ofn:
out = os.path.splitext(geom)[0]+'-shifted.geom'
else:
out = opt.ofn
xshift = float(args[2])
yshift = float(args[3])
if opt.px:
units = 'px'
else:
units = 'mm'
if opt.beam:
bm = 'beam'
else:
bm = 'detector'
print 'Input filename %s\nOutput filename %s' % (geom,out)
print 'Shifting %s by %f,%f %s' % (bm, xshift, yshift, units)
if opt.beam:
xshift = -xshift
yshift = -yshift
f = open(geom, 'r')
g = open(args[1], 'r')
h = open(out, 'w')
panel_resolutions = {}
prog1 = re.compile("^\s*res\s+=\s+([0-9\.]+)\s")
prog2 = re.compile("^\s*(.*)\/res\s+=\s+([0-9\.]+)\s")
prog3 = re.compile("^\s*(.*)\/corner_x\s+=\s+([0-9\.\-]+)\s")
prog4 = re.compile("^\s*(.*)\/corner_y\s+=\s+([0-9\.\-]+)\s")
default_res = 0
while True:
fline = g.readline()
if not fline:
break
match = prog1.match(fline)
if match:
default_res = float(match.group(1))
h.write(fline)
continue
match = prog2.match(fline)
if match:
panel = match.group(1)
panel_res = float(match.group(2))
default_res = panel_res
panel_resolutions[panel] = panel_res
h.write(fline)
continue
match = prog3.match(fline)
if match:
panel = match.group(1)
panel_cnx = float(match.group(2))
if panel in panel_resolutions:
res = panel_resolutions[panel]
else:
res = default_res
if not opt.px:
print 'Using default resolution (%f px/m) for panel %s' % (res, panel)
if opt.px:
h.write('%s/corner_x = %f\n' % (panel,panel_cnx+xshift))
else:
h.write('%s/corner_x = %f\n' % (panel,panel_cnx+(xshift*res*1e-3)))
continue
match = prog4.match(fline)
if match:
panel = match.group(1)
panel_cny = float(match.group(2))
if panel in panel_resolutions:
res = panel_resolutions[panel]
else:
res = default_res
if not opt.px:
print 'Using default resolution (%f px/m) for panel %s' % (res, panel)
if opt.px:
h.write('%s/corner_y = %f\n' % (panel,panel_cny+yshift))
else:
h.write('%s/corner_y = %f\n' % (panel,panel_cny+(yshift*res*1e-3)))
continue
h.write(fline)
g.close()
h.close()
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