class FormatDIP2030b(Format):
@staticmethod
def understand(image_file):
# for MacScience DIP2030b only, file size is exactly 18001024 bytes
headerstart = 3000 * 3000 * 2
try:
with FormatDIP2030b.open_file(image_file, "rb") as fh:
fh.seek(headerstart)
rawheader = fh.read(1024)
eof = fh.read(1) # end of file
except OSError:
return False
return eof == b"" and rawheader[0:3] == b"DIP"
def __init__(self, image_file, **kwargs):
"""Initialise the image structure from the given file."""
if not self.understand(image_file):
raise IncorrectFormatError(self, image_file)
super().__init__(image_file, **kwargs)
def detectorbase_start(self):
pass
def _start(self):
self.detectorbase = DIPImage(self._image_file)
self.detectorbase.readHeader()
def _goniometer(self):
return self._goniometer_factory.single_axis()
def _detector(self):
"""Return a model for a simple detector"""
# twotheta = self.detectorbase.parameters["TWOTHETA"]
# At present, ignore non-zero two theta for the dxtbx model
# XXX Return to this issue later.
return self._detector_factory.simple(
sensor="IMAGE_PLATE",
distance=self.detectorbase.distance,
beam_centre=(self.detectorbase.beamx, self.detectorbase.beamy),
fast_direction="+x",
slow_direction="-y",
pixel_size=(self.detectorbase.pixel_size,
self.detectorbase.pixel_size),
image_size=(self.detectorbase.size1, self.detectorbase.size2),
trusted_range=(0, self.detectorbase.saturation),
mask=[],
) # a list of dead rectangles
def _beam(self):
"""Return a simple model for the beam."""
return self._beam_factory.simple(self.detectorbase.wavelength)
def _scan(self):
"""Return the scan information for this image."""
return self._scan_factory.single_file(
filename=self._image_file,
exposure_times=self.detectorbase.parameters["TIME"],
osc_start=self.detectorbase.osc_start,
osc_width=self.detectorbase.deltaphi,
epoch=None,
)
def _start(self):
from iotbx.detectors.macscience import DIPImage
self.detectorbase = DIPImage(self._image_file)
self.detectorbase.readHeader()
def _start(self):
self.detectorbase = DIPImage(self._image_file)
self.detectorbase.readHeader()
class FormatDIP2030b(Format):
@staticmethod
def understand(image_file):
# for MacScience DIP2030b only, file size is exactly 18001024 bytes
headerstart = 3000 * 3000 * 2
try:
F = FormatDIP2030b.open_file(image_file, 'rb')
F.seek(headerstart)
rawheader = F.read(1024)
eof = F.read(1) # end of file
F.close()
except IOError:
return False
return eof == "" and rawheader[0:3] == "DIP"
def __init__(self, image_file, **kwargs):
'''Initialise the image structure from the given file.'''
from dxtbx import IncorrectFormatError
if not self.understand(image_file):
raise IncorrectFormatError(self, image_file)
Format.__init__(self, image_file, **kwargs)
def detectorbase_start(self):
pass
def _start(self):
from iotbx.detectors.macscience import DIPImage
self.detectorbase = DIPImage(self._image_file)
self.detectorbase.readHeader()
def _goniometer(self):
return self._goniometer_factory.single_axis()
def _detector(self):
'''Return a model for a simple detector'''
twotheta = self.detectorbase.parameters["TWOTHETA"]
# At present, ignore non-zero two theta for the dxtbx model
# XXX Return to this issue later.
return self._detector_factory.simple(
sensor='IMAGE_PLATE',
distance=self.detectorbase.parameters["DISTANCE"],
beam_centre=(self.detectorbase.parameters["BEAM_CENTER_X"],
self.detectorbase.parameters["BEAM_CENTER_Y"]),
fast_direction='+x',
slow_direction='-y',
pixel_size=(self.detectorbase.parameters["PIXEL_SIZE"],
self.detectorbase.parameters["PIXEL_SIZE"]),
image_size=(self.detectorbase.parameters["SIZE1"],
self.detectorbase.parameters["SIZE2"]),
trusted_range=(
0, self.detectorbase.parameters["CCD_IMAGE_SATURATION"]),
mask=[]) # a list of dead rectangles
def _beam(self):
'''Return a simple model for the beam.'''
return self._beam_factory.simple(
self.detectorbase.parameters["WAVELENGTH"])
def _scan(self):
'''Return the scan information for this image.'''
return self._scan_factory.single(
filename=self._image_file,
format="DIP",
exposure_times=self.detectorbase.parameters["TIME"],
osc_start=self.detectorbase.parameters["OSC_START"],
osc_width=self.detectorbase.parameters["OSC_RANGE"],
epoch=None)