Attenuation Property

Short Name: Attenuation

Installed With: Full Development System

Class: SceneLight Properties

Reads or writes the factors of attenuation applied to the light. Attenuation mimics how the intensity of light diminishes as you increase distance from the light.

Attenuation is determined using the following equation:

where:

k_c = constant attenuation

k_l = linear attenuation

k_q = quadratic attenuation

d = the distance between the position of the light and the vertex

Elements

Name	Description
Constant Attenuation	Indicates the constant factor of attenuation (kc) you apply to the light. The constant factor of attenuation does not change as distance from the light increases.
Linear Attenuation	Indicates the linear factor of attenuation (kl) you apply to the light. The linear factor of attenuation drops in a linear manner as distance from the light increases.
Quadratic Attenuation	Indicates the quadratic factor of attenuation (kq) you apply to the light. The quadratic factor of attenuation drops by the square of the distance from the light.

Remarks

The following table lists the characteristics of this property.

Available in Run-Time Engine and Real-Time Operating System	Yes
Permissions	Read/Write
Settable when the VI is running	Yes
Loads the front panel into memory	No
Need to authenticate before use	No
Loads the block diagram into memory	No
Remote access disallowed	No
Must wait until user interface is idle	No
Available with control VIs	No
Available with global VIs	No
Available with strict type definitions	No
Available with polymorphic VIs	No