ThreeDCamera#

Qualified name: manim.camera.three\_d\_camera.ThreeDCamera

class ThreeDCamera(focal_distance=20.0, shading_factor=0.2, default_distance=5.0, light_source_start_point=array([- 7., - 9., 10.]), should_apply_shading=True, exponential_projection=False, phi=0, theta=- 1.5707963267948966, gamma=0, zoom=1, **kwargs)[source]#

Bases: Camera

Initializes the ThreeDCamera

Parameters:: *kwargs – Any keyword argument of Camera.

Methods

`add_fixed_in_frame_mobjects`	This method allows the mobject to have a fixed position, even when the camera moves around.
`add_fixed_orientation_mobjects`	This method allows the mobject to have a fixed orientation, even when the camera moves around.
`capture_mobjects`	Capture mobjects by printing them on `pixel_array`.
`generate_rotation_matrix`	Generates a rotation matrix based off the current position of the camera.
`get_fill_rgbas`	Returns the RGBA array of the fill of the passed VMobject
`get_focal_distance`	Returns focal_distance of the Camera.
`get_gamma`	Returns the rotation of the camera about the vector from the ORIGIN to the Camera.
`get_mobjects_to_display`	Used to get the list of mobjects to display with the camera.
`get_phi`	Returns the Polar angle (the angle off Z_AXIS) phi.
`get_rotation_matrix`	Returns the matrix corresponding to the current position of the camera.
`get_stroke_rgbas`	Gets the RGBA array for the stroke of the passed VMobject.
`get_theta`	Returns the Azimuthal i.e the angle that spins the camera around the Z_AXIS.
`get_value_trackers`	A list of `ValueTrackers` of phi, theta, focal_distance, gamma and zoom.
`get_zoom`	Returns the zoom amount of the camera.
`modified_rgbas`
`project_point`	Applies the current rotation_matrix as a projection matrix to the passed point.
`project_points`	Applies the current rotation_matrix as a projection matrix to the passed array of points.
`remove_fixed_in_frame_mobjects`	If a mobject was fixed in frame by passing it through `add_fixed_in_frame_mobjects()`, then this undoes that fixing.
`remove_fixed_orientation_mobjects`	If a mobject was fixed in its orientation by passing it through `add_fixed_orientation_mobjects()`, then this undoes that fixing.
`reset_rotation_matrix`	Sets the value of self.rotation_matrix to the matrix corresponding to the current position of the camera
`set_focal_distance`	Sets the focal_distance of the Camera.
`set_gamma`	Sets the angle of rotation of the camera about the vector from the ORIGIN to the Camera.
`set_phi`	Sets the polar angle i.e the angle between Z_AXIS and Camera through ORIGIN in radians.
`set_theta`	Sets the azimuthal angle i.e the angle that spins the camera around Z_AXIS in radians.
`set_zoom`	Sets the zoom amount of the camera.
`transform_points_pre_display`

Attributes

`background_color`
`background_opacity`
`frame_center`

add_fixed_in_frame_mobjects(*mobjects)[source]#

This method allows the mobject to have a fixed position, even when the camera moves around. E.G If it was passed through this method, at the top of the frame, it will continue to be displayed at the top of the frame.

Highly useful when displaying Titles or formulae or the like.

Parameters:: **mobjects (Mobject) – The mobject to fix in frame.

add_fixed_orientation_mobjects(*mobjects, use_static_center_func=False, center_func=None)[source]#

This method allows the mobject to have a fixed orientation, even when the camera moves around. E.G If it was passed through this method, facing the camera, it will continue to face the camera even as the camera moves. Highly useful when adding labels to graphs and the like.

Parameters:

*mobjects (Mobject) – The mobject whose orientation must be fixed.
use_static_center_func (bool) – Whether or not to use the function that takes the mobject’s center as centerpoint, by default False
center_func (Optional[Callable[[], ndarray]]) – The function which returns the centerpoint with respect to which the mobject will be oriented, by default None

capture_mobjects(mobjects, **kwargs)[source]#

Capture mobjects by printing them on pixel_array.

This is the essential function that converts the contents of a Scene into an array, which is then converted to an image or video.

Parameters:

mobjects – Mobjects to capture.
kwargs – Keyword arguments to be passed to get_mobjects_to_display().

Notes

For a list of classes that can currently be rendered, see display_funcs().

generate_rotation_matrix()[source]#

Generates a rotation matrix based off the current position of the camera.

Returns:: The matrix corresponding to the current position of the camera.
Return type:: np.array

get_fill_rgbas(vmobject)[source]#

Returns the RGBA array of the fill of the passed VMobject

Parameters:: vmobject – The VMobject
Returns:: The RGBA Array of the fill of the VMobject
Return type:: np.array

get_focal_distance()[source]#

Returns focal_distance of the Camera.

Returns:: The focal_distance of the Camera in MUnits.
Return type:: float

get_gamma()[source]#

Returns the rotation of the camera about the vector from the ORIGIN to the Camera.

Returns:: The angle of rotation of the camera about the vector from the ORIGIN to the Camera in radians
Return type:: float

get_mobjects_to_display(*args, **kwargs)[source]#

Used to get the list of mobjects to display with the camera.

Parameters:

mobjects – The Mobjects
include_submobjects – Whether or not to include the submobjects of mobjects, by default True
excluded_mobjects – Any mobjects to exclude, by default None

Returns:

list of mobjects

Return type:

list

get_phi()[source]#

Returns the Polar angle (the angle off Z_AXIS) phi.

Returns:: The Polar angle in radians.
Return type:: float

get_rotation_matrix()[source]#

Returns the matrix corresponding to the current position of the camera.

Returns:: The matrix corresponding to the current position of the camera.
Return type:: np.array

get_stroke_rgbas(vmobject, background=False)[source]#

Gets the RGBA array for the stroke of the passed VMobject.

Parameters:

vmobject – The VMobject
background – Whether or not to consider the background when getting the stroke RGBAs, by default False

Returns:

The RGBA array of the stroke.

Return type:

np.ndarray

get_theta()[source]#

Returns the Azimuthal i.e the angle that spins the camera around the Z_AXIS.

Returns:: The Azimuthal angle in radians.
Return type:: float

get_value_trackers()[source]#

A list of ValueTrackers of phi, theta, focal_distance, gamma and zoom.

Returns:: list of ValueTracker objects
Return type:: list

get_zoom()[source]#

Returns the zoom amount of the camera.

Returns:: The zoom amount of the camera.
Return type:: float

project_point(point)[source]#

Applies the current rotation_matrix as a projection matrix to the passed point.

Parameters:: point (list | numpy.ndarray) – The point to project.
Returns:: The point after projection.
Return type:: np.array

project_points(points)[source]#

Applies the current rotation_matrix as a projection matrix to the passed array of points.

Parameters:: points (numpy.ndarray | list) – The list of points to project.
Returns:: The points after projecting.
Return type:: np.array

remove_fixed_in_frame_mobjects(*mobjects)[source]#

If a mobject was fixed in frame by passing it through add_fixed_in_frame_mobjects(), then this undoes that fixing. The Mobject will no longer be fixed in frame.

Parameters:: mobjects (Mobject) – The mobjects which need not be fixed in frame any longer.

remove_fixed_orientation_mobjects(*mobjects)[source]#

If a mobject was fixed in its orientation by passing it through add_fixed_orientation_mobjects(), then this undoes that fixing. The Mobject will no longer have a fixed orientation.

Parameters:: mobjects (Mobject) – The mobjects whose orientation need not be fixed any longer.

reset_rotation_matrix()[source]#: Sets the value of self.rotation_matrix to the matrix corresponding to the current position of the camera

set_focal_distance(value)[source]#

Sets the focal_distance of the Camera.

Parameters:: value (float) – The focal_distance of the Camera.

set_gamma(value)[source]#

Sets the angle of rotation of the camera about the vector from the ORIGIN to the Camera.

Parameters:: value (float) – The new angle of rotation of the camera.

set_phi(value)[source]#

Sets the polar angle i.e the angle between Z_AXIS and Camera through ORIGIN in radians.

Parameters:: value (float) – The new value of the polar angle in radians.

set_theta(value)[source]#

Sets the azimuthal angle i.e the angle that spins the camera around Z_AXIS in radians.

Parameters:: value (float) – The new value of the azimuthal angle in radians.

set_zoom(value)[source]#

Sets the zoom amount of the camera.

Parameters:: value (float) – The zoom amount of the camera.