Add type annotations to growing.py (#4368)

Co-authored-by: Francisco Manríquez Novoa <49853152+chopan050@users.noreply.github.com>

manim/animation/animation.py

@@ -262,7 +262,7 @@ class Animation:
         ):
             scene.add(self.mobject)
 
-    def create_starting_mobject(self) -> Mobject:
+    def create_starting_mobject(self) -> Mobject | OpenGLMobject:
         # Keep track of where the mobject starts
         return self.mobject.copy()
 

manim/animation/growing.py

@@ -33,14 +33,17 @@ __all__ = [
 
 import typing
 
-import numpy as np
-
 from ..animation.transform import Transform
 from ..constants import PI
 from ..utils.paths import spiral_path
 
 if typing.TYPE_CHECKING:
+    from typing import Any
+
     from manim.mobject.geometry.line import Arrow
+    from manim.mobject.opengl.opengl_mobject import OpenGLMobject
+    from manim.typing import Point3DLike, Vector3DLike
+    from manim.utils.color import ParsableManimColor
 
     from ..mobject.mobject import Mobject
 
@@ -76,16 +79,20 @@ class GrowFromPoint(Transform):
     """
 
     def __init__(
-        self, mobject: Mobject, point: np.ndarray, point_color: str = None, **kwargs
-    ) -> None:
+        self,
+        mobject: Mobject,
+        point: Point3DLike,
+        point_color: ParsableManimColor | None = None,
+        **kwargs: Any,
+    ):
         self.point = point
         self.point_color = point_color
         super().__init__(mobject, introducer=True, **kwargs)
 
-    def create_target(self) -> Mobject:
+    def create_target(self) -> Mobject | OpenGLMobject:
         return self.mobject
 
-    def create_starting_mobject(self) -> Mobject:
+    def create_starting_mobject(self) -> Mobject | OpenGLMobject:
         start = super().create_starting_mobject()
         start.scale(0)
         start.move_to(self.point)
@@ -118,7 +125,12 @@ class GrowFromCenter(GrowFromPoint):
 
     """
 
-    def __init__(self, mobject: Mobject, point_color: str = None, **kwargs) -> None:
+    def __init__(
+        self,
+        mobject: Mobject,
+        point_color: ParsableManimColor | None = None,
+        **kwargs: Any,
+    ):
         point = mobject.get_center()
         super().__init__(mobject, point, point_color=point_color, **kwargs)
 
@@ -153,8 +165,12 @@ class GrowFromEdge(GrowFromPoint):
     """
 
     def __init__(
-        self, mobject: Mobject, edge: np.ndarray, point_color: str = None, **kwargs
-    ) -> None:
+        self,
+        mobject: Mobject,
+        edge: Vector3DLike,
+        point_color: ParsableManimColor | None = None,
+        **kwargs: Any,
+    ):
         point = mobject.get_critical_point(edge)
         super().__init__(mobject, point, point_color=point_color, **kwargs)
 
@@ -183,11 +199,13 @@ class GrowArrow(GrowFromPoint):
 
     """
 
-    def __init__(self, arrow: Arrow, point_color: str = None, **kwargs) -> None:
+    def __init__(
+        self, arrow: Arrow, point_color: ParsableManimColor | None = None, **kwargs: Any
+    ):
         point = arrow.get_start()
         super().__init__(arrow, point, point_color=point_color, **kwargs)
 
-    def create_starting_mobject(self) -> Mobject:
+    def create_starting_mobject(self) -> Mobject | OpenGLMobject:
         start_arrow = self.mobject.copy()
         start_arrow.scale(0, scale_tips=True, about_point=self.point)
         if self.point_color:
@@ -224,8 +242,12 @@ class SpinInFromNothing(GrowFromCenter):
     """
 
     def __init__(
-        self, mobject: Mobject, angle: float = PI / 2, point_color: str = None, **kwargs
-    ) -> None:
+        self,
+        mobject: Mobject,
+        angle: float = PI / 2,
+        point_color: ParsableManimColor | None = None,
+        **kwargs: Any,
+    ):
         self.angle = angle
         super().__init__(
             mobject, path_func=spiral_path(angle), point_color=point_color, **kwargs

mypy.ini

@@ -57,9 +57,6 @@ ignore_errors = True
 [mypy-manim.animation.creation]
 ignore_errors = True
 
-[mypy-manim.animation.growing]
-ignore_errors = True
-
 [mypy-manim.animation.movement]
 ignore_errors = True