Delete config.rst

docs/source/getting_started/config.rst

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-CONFIG dictionary
-=================
-
-What's CONFIG
--------------
-
-``CONFIG`` dictionary is a feature of manim, which facilitates the inheritance 
-and modification of parameters between parent and child classes.
-
-| ``CONFIG`` dictionary 's processing is in ``manimlib/utils/dict_ops.py``
-| It can convert the key-value pairs in the ``CONFIG`` dictionary into class attributes and values
-
-Generally, the first line of the ``.__init__()`` method in some basic class (``Mobject``, ``Animation``, 
-etc.) will call this function ``digest_config(self, kwargs)`` to convert both 
-the ``CONFIG`` dictionary and ``kwargs`` into attributes. Then it can be accessed 
-directly through ``self.``, which simplifies the handling of inheritance between classes.
-
-**An example**:
-
-There are many class inheritance relationships in ``manimlib/mobject/geometry.py``
-
-.. code-block:: python
-
-    # Line 279
-    class Circle(Arc):
-        CONFIG = {
-            "color": RED,
-            "close_new_points": True,
-            "anchors_span_full_range": False
-        }
-
-.. code-block:: python
-
-    # Line 304
-    class Dot(Circle):
-        CONFIG = {
-            "radius": DEFAULT_DOT_RADIUS,
-            "stroke_width": 0,
-            "fill_opacity": 1.0,
-            "color": WHITE
-        }
-
-The ``Circle`` class uses the key-value pair ``"color": RED`` in the ``CONFIG`` 
-dictionary to add the attribute ``self.color``.
-
-At the same time, the ``Dot`` class also contains the key ``color`` in the 
-``CONFIG`` dictionary, but the value is different. At this time, the priority will 
-modify the attribute ``self.color`` to  ``WHITE``. 
-
-CONFIG nesting
---------------
-
-The ``CONFIG`` dictionary supports nesting, that is, the value of the key is also 
-a dictionary, for example:
-
-.. code-block:: python
-
-    class Camera(object):
-        CONFIG = {
-            # configs
-        }
-
-.. code-block:: python
-
-    class Scene(object):
-        CONFIG = {
-            "window_config": {},
-            "camera_class": Camera,
-            "camera_config": {},
-            "file_writer_config": {},
-            # other configs
-        }
-
-        def __init__(self, **kwargs):
-            digest_config(self, kwargs)
-            # some lines
-            self.camera = self.camera_class(**self.camera_config)
-
-The ``CONFIG`` dictionary of the ``Camera`` class contains many key-value pairs, 
-and this class needs to be instantiated in the ``Scene`` class. For more convenient 
-control, there is a special key-value pair in the Scene class ``"camera_config": {}``,
-Its value is a dictionary, passed in as ``kwargs`` when initializing the ``Camera`` class 
-to modify the value of the properties of the ``Camera`` class.
-
-So the nesting of the ``CONFIG`` dictionary **essentially** passes in the value as ``kwargs``.