def getDetectors(self):
'''
:return: a list of detectors in the configuration
'''
logger.debug("Enter")
detectors = self.root.find(self.DETECTORS)
if detectors is None:
raise DetectorConfigException("No detectors found in detector " + \
"config file")
logger.debug("Exit")
return detectors
def __init__(self, filename, nameSpace):
'''
initialize the class and make sure the file seems to be valid XML
'''
logger.debug("Enter")
self._initXmlConstants(nameSpace)
try:
tree = ET.parse(filename)
except IOError as ex:
raise DetectorConfigException("Bad Detector Configuration File" + \
str(ex))
self.root = tree.getroot()
logger.debug("Exit")
def getDetectorById(self, identifier):
'''
return a particular by specifying it's ID
:param identifier: the id of the specified detector
:return: The requested detector
'''
logger.debug("Enter")
try:
dets = self.getDetectors().findall(self.DETECTOR)
except AttributeError:
raise DetectorConfigException("No detectors found in detector " + \
"config file")
logger.debug(str(dets))
for detector in dets:
detId = detector.find(self.DETECTOR_ID)
logger.debug("getDetectorById id found - " +
str(self.getDetectorID(detector)))
if detId.text == identifier:
logger.debug("Exit")
return detector
logger.debug("Exit w Exception")
raise DetectorConfigException("Detector " + str(identifier) +
" not found in detector config file")
def getCenterChannelPixel(self, detector):
'''
Return a list with two elements specifying the location of the center
pixel
:param detector: specifies the detector who's return value is requested
:return: The location of the detector's center pixel
'''
logger.debug(METHOD_ENTER_STR)
try:
centerPix = detector.find(self.CENTER_CHANNEL_PIXEL).text
except AttributeError:
raise DetectorConfigException(self.CENTER_CHANNEL_PIXEL +
" not found in detector config " + \
"file")
vals = centerPix.split()
logger.debug(METHOD_EXIT_STR + str([int(vals[0]), int(vals[1])]) )
return [int(vals[0]), int(vals[1])]
def __init__(self, filename):
'''
Constructor
:param filename: name of the XML file holding the detector geomery
'''
super(DetectorGeometryForXrayutilitiesReader, self).__init__(filename, nameSpace)
logger.debug(METHOD_ENTER_STR)
# self.DETECTORS = nameSpace + "Detectors"
# self.DETECTOR = nameSpace + "Detector"
# self.DETECTOR_ID = nameSpace + "ID"
self.PIXEL_DIRECTION1 = nameSpace + 'pixelDirection1'
self.PIXEL_DIRECTION2 = nameSpace + 'pixelDirection2'
self.CENTER_CHANNEL_PIXEL = nameSpace + 'centerChannelPixel'
# self.NUMBER_OF_PIXELS = nameSpace + 'Npixels'
# self.DETECTOR_SIZE = nameSpace + 'size'
self.DETECTOR_DISTANCE = nameSpace + 'distance'
try:
tree = ET.parse(filename)
except IOError as ex:
raise DetectorConfigException("Bad Detector Configuration File" + \
str(ex))
self.root = tree.getroot()
logger.debug(METHOD_EXIT_STR)