light_type

property Light.light_type

Return the light type.

The default light type is a scene light which lives in world coordinate space.

A headlight is attached to the camera and always points at the camera’s focal point.

A camera light also moves with the camera, but it can have an arbitrary relative position to the camera. Camera lights are defined in a coordinate space where the camera is located at (0, 0, 1), looking towards (0, 0, 0) at a distance of 1, with up being (0, 1, 0). Camera lights use the transform matrix to establish this space, i.e. they have a fixed position with respect to the camera, and moving the camera only affects the world_position via changes in the transform_matrix (and the same goes for the focal point).

The property returns class constant values from an enum:

  • Light.HEADLIGHT == 1

  • Light.CAMERA_LIGHT == 2

  • Light.SCENE_LIGHT == 3

Examples

Check the type of lights for the first two lights of the default light kit of plotters.

>>> import pyvista as pv
>>> plotter = pv.Plotter()
>>> lights = plotter.renderer.lights[:2]
>>> [light.light_type for light in lights]
[<LightType.HEADLIGHT: 1>, <LightType.CAMERA_LIGHT: 2>]

Change the light type of the default light kit’s headlight to a scene light.

>>> import pyvista as pv
>>> plotter = pv.Plotter()
>>> lights = plotter.renderer.lights[:2]
>>> lights[0].light_type = pv.Light.SCENE_LIGHT
>>> [light.light_type for light in lights]
[<LightType.SCENE_LIGHT: 3>, <LightType.CAMERA_LIGHT: 2>]
../../../_images/pyvista-Light-light_type-1_00_00.png
../../../_images/pyvista-Light-light_type-1_00_01.png