


from __future__ import annotations

from collections.abc import Iterable
from dataclasses import dataclass
from typing import Any





class     __a     :
 __lowercase					:				Any  	=					('_front', '_back', '_len')





 @dataclass
 class     __a     :
  __lowercase					:				Any  	=					None
  __lowercase					:				Deque._Node | None  	=					None
  __lowercase					:				Deque._Node | None  	=					None





 class     __a     :
  __lowercase					:				Optional[int]  	=					('_cur',)
  def __init__(  self							,					lowerCAmelCase__					)   ->							None:




         '''simple docstring'''
         lowercase__:  str         =  cur
  def __iter__(  self					)   ->							Deque._Iterator:




         '''simple docstring'''
         return self
  def 						SCREAMING_SNAKE_CASE__  (  self					)   ->							Any:




         '''simple docstring'''
         if self._cur is None:
                # finished iterating
                raise StopIteration
         lowercase__:  List[Any]         =  self._cur.val
         lowercase__:  List[Any]         =  self._cur.next_node

         return val





 def __init__(  self							,					lowerCAmelCase__ = None					)   ->							None:




        '''simple docstring'''
        lowercase__:  Any         =  None
        lowercase__:  Any         =  None
        lowercase__:  int         =  0

        if iterable is not None:
               # append every value to the deque
               for val in iterable:
                      self.append(lowerCAmelCase__					)
 def 						SCREAMING_SNAKE_CASE__  (  self							,					lowerCAmelCase__					)   ->							None:




        '''simple docstring'''
        lowercase__:  Optional[int]         =  self._Node(lowerCAmelCase__							,					lowerCAmelCase__							,					lowerCAmelCase__					)
        if self.is_empty():
               # front = back
               lowercase__:  List[str]         =  node
               lowercase__:  Any         =  1
        else:
               # connect nodes
               lowercase__:  List[Any]         =  node
               lowercase__:  List[str]         =  self._back
               lowercase__:  Optional[Any]         =  node  # assign new back to the new node

               self._len += 1

               # make sure there were no errors
               assert not self.is_empty(), "Error on appending value."
 def 						SCREAMING_SNAKE_CASE__  (  self							,					lowerCAmelCase__					)   ->							None:




        '''simple docstring'''
        lowercase__:  Optional[Any]         =  self._Node(lowerCAmelCase__							,					lowerCAmelCase__							,					lowerCAmelCase__					)
        if self.is_empty():
               # front = back
               lowercase__:  Optional[Any]         =  node
               lowercase__:  Optional[Any]         =  1
        else:
               # connect nodes
               lowercase__:  List[str]         =  self._front
               lowercase__:  List[str]         =  node
               lowercase__:  Optional[int]         =  node  # assign new front to the new node

               self._len += 1

               # make sure there were no errors
               assert not self.is_empty(), "Error on appending value."
 def 						SCREAMING_SNAKE_CASE__  (  self							,					lowerCAmelCase__					)   ->							None:




        '''simple docstring'''
        for val in iterable:
               self.append(lowerCAmelCase__					)
 def 						SCREAMING_SNAKE_CASE__  (  self							,					lowerCAmelCase__					)   ->							None:




        '''simple docstring'''
        for val in iterable:
               self.appendleft(lowerCAmelCase__					)
 def 						SCREAMING_SNAKE_CASE__  (  self					)   ->							Any:




        '''simple docstring'''
        assert not self.is_empty(), "Deque is empty."

        lowercase__:  Optional[Any]         =  self._back
        lowercase__:  List[str]         =  self._back.prev_node  # set new back
        # drop the last node - python will deallocate memory automatically
        lowercase__:  int         =  None

        self._len -= 1

        return topop.val
 def 						SCREAMING_SNAKE_CASE__  (  self					)   ->							Any:




        '''simple docstring'''
        assert not self.is_empty(), "Deque is empty."

        lowercase__:  Optional[int]         =  self._front
        lowercase__:  List[str]         =  self._front.next_node  # set new front and drop the first node
        lowercase__:  Dict         =  None

        self._len -= 1

        return topop.val
 def 						SCREAMING_SNAKE_CASE__  (  self					)   ->							bool:




        '''simple docstring'''
        return self._front is None
 def __len__(  self					)   ->							int:




        '''simple docstring'''
        return self._len
 def __eq__(  self							,					lowerCAmelCase__					)   ->							bool:




        '''simple docstring'''

        if not isinstance(lowerCAmelCase__							,					lowerCAmelCase__					):
               return NotImplemented

        lowercase__:  Dict         =  self._front
        lowercase__:  List[Any]         =  other._front

        # if the length of the dequeues are not the same, they are not equal
        if len(self					) != len(lowerCAmelCase__					):
               return False

        while me is not None and oth is not None:
               # compare every value
               if me.val != oth.val:
                      return False
               lowercase__:  List[Any]         =  me.next_node
               lowercase__:  Union[str, Any]         =  oth.next_node

        return True
 def __iter__(  self					)   ->							Deque._Iterator:




        '''simple docstring'''
        return Deque._Iterator(self._front					)
 def __repr__(  self					)   ->							str:




        '''simple docstring'''
        lowercase__:  Optional[int]         =  []
        lowercase__:  Optional[Any]         =  self._front
        while aux is not None:
               # append the values in a list to display
               values_list.append(aux.val					)
               lowercase__:  Optional[int]         =  aux.next_node

        return F'[{", ".join(repr(lowerCAmelCase__					) for val in values_list					)}]'


if __name__ == "__main__":
 import doctest

 doctest.testmod()






import numpy as np
from cva import COLOR_BGR2GRAY, cvtColor, imread, imshow, waitKey

from digital_image_processing.filters.convolve import img_convolve




def   snake_case_	(    snake_case	)    ->							List[str]:
       lowercase__:  Any         =  np.array([[-1, 0, 1], [-2, 0, 2], [-1, 0, 1]]	)
       lowercase__:  Optional[Any]         =  np.array([[1, 2, 1], [0, 0, 0], [-1, -2, -1]]	)

       lowercase__:  Optional[int]         =  np.abs(img_convolve(snake_case     ,				snake_case	)	)
       lowercase__:  List[Any]         =  np.abs(img_convolve(snake_case     ,				snake_case	)	)
       # modify the pix within [0, 255]
       lowercase__:  Optional[Any]         =  dst_x * 2_55 / np.max(snake_case	)
       lowercase__:  Dict         =  dst_y * 2_55 / np.max(snake_case	)

       lowercase__:  Tuple         =  np.sqrt((np.square(snake_case	)) + (np.square(snake_case	))	)
       lowercase__:  str         =  dst_xy * 2_55 / np.max(snake_case	)
       lowercase__:  Tuple         =  dst_xy.astype(np.uinta	)

       lowercase__:  List[Any]         =  np.arctana(snake_case     ,				snake_case	)
       return dst, theta


if __name__ == "__main__":
 # read original image
 __lowerCAmelCase									=				imread('''../image_data/lena.jpg''')
 # turn image in gray scale value
 __lowerCAmelCase									=				cvtColor(img, COLOR_BGR2GRAY)

 __lowerCAmelCase			,__lowerCAmelCase									=				sobel_filter(gray)

 # show result images
 imshow('''sobel filter''', sobel_grad)
 imshow('''sobel theta''', sobel_theta)
 waitKey(0)


