Files
manim/manimlib/scene/moving_camera_scene.py
Aathish a529a59abf Added DocStrings for all methods in Container, Scene, GraphScene, MovingCameraScene, SceneFileWriter, ThreeDScene, SpecialThreeDScene, ZoomedScene, VectorScene, and LinearTransformationScene. (#1040)
* Added DocStrings for methods in Container and Scene.
Removed 2 unused imports from scene.py.

* Added DocStrings for all methods in GraphScene, MovingCameraScene, SceneFileWriter, ThreeDScene, SpecialThreeDScene and ZoomedScene.

* Added DocStrings for all methods in `VectorScene` and LinearTransformationScene...
...except `position_x_coordinate` and `position_y_coordinate`

Co-authored-by: Aathish Sivasubrahmanian <aathishs@Aathishs-MacBook-Air.local>
2020-05-13 22:41:22 -07:00

48 lines
1.7 KiB
Python

from manimlib.camera.moving_camera import MovingCamera
from manimlib.scene.scene import Scene
from manimlib.utils.iterables import list_update
class MovingCameraScene(Scene):
"""
This is a Scene, with special configurations and properties that
make it suitable for cases where the camera must be moved around.
"""
CONFIG = {
"camera_class": MovingCamera
}
def setup(self):
"""
This method is used internally by Manim
to set up the scene for proper use.
"""
Scene.setup(self)
assert(isinstance(self.camera, MovingCamera))
self.camera_frame = self.camera.frame
# Hmm, this currently relies on the fact that MovingCamera
# willd default to a full-sized frame. Is that okay?
return self
def get_moving_mobjects(self, *animations):
"""
This method returns a list of all of the Mobjects in the Scene that
are moving, that are also in the animations passed.
Parameters
----------
*animations (Animation)
The animations whose mobjects will be checked.
"""
moving_mobjects = Scene.get_moving_mobjects(self, *animations)
all_moving_mobjects = self.camera.extract_mobject_family_members(
moving_mobjects
)
movement_indicators = self.camera.get_mobjects_indicating_movement()
for movement_indicator in movement_indicators:
if movement_indicator in all_moving_mobjects:
# When one of these is moving, the camera should
# consider all mobjects to be moving
return list_update(self.mobjects, moving_mobjects)
return moving_mobjects