def rotate_img_m90(self):
"""
Rotates the image by -90 degree and updates the background accordingly (does not effect absorption correction).
The transformation is saved and applied to every new image and background image loaded.
Notifies observers.
"""
self._img_data = rotate_matrix_m90(self._img_data)
if self._background_data is not None:
self._background_data = rotate_matrix_m90(self._background_data)
self.img_transformations.append(rotate_matrix_m90)
self._calculate_img_data()
self.notify()
def reset_img_transformations(self):
"""
Reverts all image transformations and resets the transformation stack.
Notifies observers.
"""
for transformation in reversed(self.img_transformations):
if transformation == rotate_matrix_p90:
self._img_data = rotate_matrix_m90(self._img_data)
if self._background_data is not None:
self._background_data = rotate_matrix_m90(self._background_data)
elif transformation == rotate_matrix_m90:
self._img_data = rotate_matrix_p90(self._img_data)
if self._background_data is not None:
self._background_data = rotate_matrix_p90(self._background_data)
else:
self._img_data = transformation(self._img_data)
if self._background_data is not None:
self._background_data = transformation(self._background_data)
self.img_transformations = []
self._calculate_img_data()
self.notify()