[EXPERIMENTAL] Remove ThreeDScene and rewrite Camera internals (#4059)

Co-authored-by: Aarush Deshpande <[email protected]>
Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

Author: 3 people

docs/i18n/gettext/reference/manim.mobject.three_d.three_dimensions.Line3D.pot

@@ -19,7 +19,7 @@ msgid "Bases: :py:class:`manim.mobject.three_d.three_dimensions.Cylinder`"
 msgstr ""
 
 #: ../../../manim/mobject/three_d/three_dimensions.py:docstring of manim.mobject.three_d.three_dimensions.Line3D:1
-msgid "A cylindrical line, for use in ThreeDScene."
+msgid "A cylindrical line."
 msgstr ""
 
 #: ../../../manim/mobject/three_d/three_dimensions.py:docstring of manim.mobject.three_d.three_dimensions.Line3D:4

docs/i18n/gettext/reference/manim.mobject.three_d.three_dimensions.pot

@@ -35,7 +35,7 @@ msgid "A spherical dot."
 msgstr ""
 
 #: ../../source/reference/manim.mobject.three_d.three_dimensions.rst:40:<autosummary>:1
-msgid "A cylindrical line, for use in ThreeDScene."
+msgid "A cylindrical line."
 msgstr ""
 
 #: ../../source/reference/manim.mobject.three_d.three_dimensions.rst:40:<autosummary>:1

docs/i18n/gettext/reference/manim.scene.three_d_scene.SpecialThreeDScene.pot

@@ -213,11 +213,11 @@ The decorator can be used with or without parentheses. **By default, the test on
       circle = Circle()
       scene.play(Animation(circle))
 
-You can also specify, when needed, which base scene you need (ThreeDScene, for example) :
+You can also specify, when needed, which base scene you need (VectorScene, for example) :
 
 .. code:: python
 
-  @frames_comparison(last_frame=False, base_scene=ThreeDScene)
+  @frames_comparison(last_frame=False, base_scene=VectorScene)
   def test_circle(scene):
       circle = Circle()
       scene.play(Animation(circle))