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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 argparse
import os
import re
op = argparse.ArgumentParser()
op.add_argument('--output', dest='ofn', metavar='output.geom',
help="Output geometry file")
op.add_argument('--pixels', action='store_true', dest='px',
help="Indicates that the shifts are in pixel units")
op.add_argument('--mm', action='store_false', dest='px',
help="Indicates that the shifts are in millimeters (this is the default)")
op.add_argument('--beam', action='store_true', dest='beam',
help="Shift the X-ray beam rather than the detector")
op.add_argument('--detector', action='store_false', dest='beam',
help="Shift the detector rather than the X-ray beam. This is the default.")
op.add_argument('ifn', metavar='input.geom',
help="The name of the geometry file to shift")
op.add_argument('xshift', type=float, metavar='XXX',
help="The shift in the x direction")
op.add_argument('yshift', type=float, metavar='YYY',
help="The shift in the y direction")
args = op.parse_args()
if not args.ofn:
out = os.path.splitext(args.ifn)[0]+'-shifted.geom'
else:
out = opt.ofn
if args.px:
units = 'px'
else:
units = 'mm'
if args.beam:
bm = 'beam'
else:
bm = 'detector'
print 'Input filename %s\nOutput filename %s' % (args.ifn,out)
print 'Shifting %s by %f,%f %s' % (bm, args.xshift, args.yshift, units)
if args.beam:
args.xshift = -args.xshift
args.yshift = -args.yshift
f = open(args.ifn, '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 = f.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 args.px:
print 'Using default resolution (%f px/m) for panel %s' % (res, panel)
if args.px:
h.write('%s/corner_x = %f\n' % (panel,panel_cnx+args.xshift))
else:
h.write('%s/corner_x = %f\n' % (panel,panel_cnx+(args.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 args.px:
print 'Using default resolution (%f px/m) for panel %s' % (res, panel)
if args.px:
h.write('%s/corner_y = %f\n' % (panel,panel_cny+args.yshift))
else:
h.write('%s/corner_y = %f\n' % (panel,panel_cny+(args.yshift*res*1e-3)))
continue
h.write(fline)
f.close()
h.close()
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