camera_info

class janim.camera.camera_info.CameraInfo(scaled_factor: float, fov: float, center: ndarray, horizontal_vect: ndarray, vertical_vect: ndarray)

Bases: object

Camera properties

Can be obtained via info

scaled_factor: float

The scaling ratio of the camera compared to the default size; the larger the viewport, the larger this value, and vice versa

fov: float

The field of view angle of the camera in the vertical direction

center: ndarray

The center of the camera frame (the origin in the default position)

horizontal_vect: ndarray

The horizontal vector of the camera, pointing from left to right in the view

vertical_vect: ndarray

The vertical vector of the camera, pointing from bottom to top in the view

horizontal_dist: float

The width of the camera frame in the horizontal direction

vertical_dist: float

The width of the camera frame in the vertical direction

distance_from_plane: float

The distance from the camera observation point to the frame

fixed_distance_from_plane: float

The distance from the camera observation point to the frame at default size

camera_location: ndarray

The position of the camera observation point

view_matrix: ndarray

View matrix

proj_matrix: ndarray

Projection matrix

proj_view_matrix: ndarray

The composite of projection matrix and view matrix

frame_radius: ndarray

The radius (half of the width) of the camera frame in both horizontal and vertical directions

property frame_size: tuple[float, float]

The width of the camera frame in both horizontal and vertical directions

property camera_axis: ndarray

The central axis of the camera, i.e., the opposite direction of the camera orientation, a vector pointing from the center of the frame to the observation point

map_points(points: VectArray) → ndarray

Map points in space to GL coordinates (-1 ~ 1) of the camera frame

Returns a sequence of 2D coordinates

map_points_with_depth(points: VectArray) → ndarray

Map points in space to GL coordinates (-1 ~ 1) of the camera frame

Returns a sequence of 3D coordinates. Compared to map_points(), the last component contains depth information

map_fixed_in_frame_points(points: VectArray) → ndarray

Map points in space to GL coordinates (-1 ~ 1) of the default camera frame

Returns a sequence of 2D coordinates

map_fixed_in_frame_points_with_depth(points: VectArray) → ndarray

Map points in space to GL coordinates (-1 ~ 1) of the default camera frame

Returns a sequence of 3D coordinates. Compared to map_fixed_in_frame_points(), the last component contains depth information