blendgen.util

Public symbols exposed by blendgen.util.

camera_view_bounds_2d

Function source

def camera_view_bounds_2d(scene, cam_ob, me_ob)

Returns camera space bounding box of mesh object.

Negative 'z' value means the point is behind the camera.

Takes shift-x/y, lens angle and sensor size into account as well as perspective/ortho projections.

Thanks to the wonderful https://blender.stackexchange.com/questions/7198/save-the-2d-bounding-box-of-an-object-in-rendered-image-to-a-text-file

:arg scene: Scene to use for frame size. :type scene: :class:bpy.types.Scene :arg obj: Camera object. :type obj: :class:bpy.types.Object :arg me: Untransformed Mesh. :type me: :class:bpy.types.Mesh :return: a Box object (call its to_tuple() method to get x, y, width and height) :rtype: :class:Box

get_pose_bone_world_matrix

Function source

def get_pose_bone_world_matrix(armature_object, bone_name)

Get a pose bone's world matrix

Arguments: armature_object {bpy.types.Object} -- The armature's object in the scene pose_bone {str} -- The pose bone name to transform

Returns: {mathutils.Matrix} -- The world matrix for the pose bone

get_screen_coords

Function source

def get_screen_coords(world_position, renderer)

Utility to get screen coordinates of a world vector

Arguments: world_position {mathutils.Vector} -- The vector 3 to transform renderer {`blendgen.renderer.Renderer} -- The blendgen renderer instance

Returns: [type] -- [description]

get_sensor_size

Function source

def get_sensor_size(sensor_fit, sensor_x, sensor_y)

Get the size of the sensor based on it's X, Y sizes

Returns: [float] - Width of sensor in float

get_sensor_fit

Function source

def get_sensor_fit(sensor_fit, size_x, size_y)

Get the aspect ratio of the sensor based on it's X, Y sizes

Returns: [str] - Type of sensor

get_intrinsic_matrix

Function source

def get_intrinsic_matrix(renderer)

uild intrinsic camera parameters from Blender camera data Arguments: camera {blendgen.renderer.Renderer} -- The Blender camera object

Returns: [mathutils.Matrix] -- A 3x4 projection matrix

get_rt_matrix

Function source

def get_rt_matrix(renderer)

Returns camera rotation and translation matrices from Blender.

Arguments: renderer {blendgen.renderer.Renderer} - The BlendGen renderer

Returns: [mathutils.Matrix] - The RT matrix

get_camera_matrices

Function source

def get_camera_matrices(renderer)

Get projection, intrinsic and rotation and translation matrices from camera