pyvista.Follower#
- class Follower(*args, **kwargs)[source]#
Wrap vtkFollower.
A Follower is a subclass of Actor that always faces the camera. It is useful for screen-aligned labels and billboarding effects.
The Follower maintains the position and scale of the actor but updates its orientation continuously to face the camera.
- Parameters:
- mapper
pyvista.DataSetMapper
,optional
DataSetMapper.
- prop
pyvista.Property
,optional
Property of the actor.
- name
str
,optional
The name of this actor used when tracking on a plotter.
- mapper
Examples
Create a scene with a Follower text that always faces the camera and a transparent cube.
>>> import pyvista as pv >>> from pyvista import examples >>> plotter = pv.Plotter()
Create the “Hello” text that will follow the camera.
>>> text_mesh = pv.Text3D('Hello', depth=0.1) >>> text_mesh = text_mesh.translate( ... [-text_mesh.center[0], -text_mesh.center[1], 0] ... )
Create mapper and follower actor for the text.
>>> text_mapper = pv.DataSetMapper(text_mesh) >>> follower = pv.Follower(mapper=text_mapper) >>> follower.prop.color = 'gold' >>> _ = plotter.add_actor(follower)
Create a transparent cube that doesn’t follow the camera.
>>> cube = pv.Cube() >>> cube_actor = plotter.add_mesh( ... cube, color='MidnightBlue', opacity=0.3, show_edges=False ... )
Set the follower’s camera and show the scene.
>>> follower.camera = plotter.camera >>> plotter.show()
Methods
Attributes
Return or set the camera of this follower.