def setFunctionMode(self, value: int):
"""mag1, mag2, lowmag, samag, diff."""
if isinstance(value, str):
try:
value = self.FUNCTION_MODES.index(value)
except ValueError:
raise JEOLValueError(f'Unrecognized function mode: {value}')
self.eos3.SelectFunctionMode(value)
def setScreenPosition(self, value: str):
"""value = 'up' or 'down'"""
UP, DOWN = 2, 0
if value == 'up':
self.screen2.SelectAngle(UP)
elif value == 'down':
self.screen2.SelectAngle(DOWN)
else:
raise JEOLValueError('No such screen position:', value,
"(must be 'up'/'down')")
def setDiffFocus(self, value: int, confirm_mode: bool = True):
"""IL1."""
if confirm_mode and (not self.getFunctionMode() == 'diff'):
raise JEOLValueError("Must be in 'diff' mode to set DiffFocus")
self.lens3.setDiffFocus(value)
def getDiffFocus(self, confirm_mode: bool = True) -> int:
if confirm_mode and (not self.getFunctionMode() == 'diff'):
raise JEOLValueError("Must be in 'diff' mode to get DiffFocus")
value, result = self.lens3.GetIL1()
return value
def setMagnificationIndex(self, index: int):
if index < 0:
raise JEOLValueError(f'Cannot lower magnification (index={index})')
self.eos3.SetSelector(index)