uDisk Light Node

A uDisk light is a round flat light, similar to an umbrella or softlight. The Controls tab is used to set the color and brightness of the uDisk light. The position, direction, and scale of the light source is controlled in the Transform tab.

uDisk Light Node Inputs

There is one Scene Input in yellow to attach a USD scene; this allows you to adjust any existing lights
within the scene.

uDisk Light Node Controls Tab

The Controls tab is used to set the color and brightness of the uDisk light. The position, direction, and scale of the light source is controlled in the Transform tab.

Override Selection

Pressing the Pick button lets you choose an existing light in an attached USD file to allow adjusting the lights in an imported scene.

Color

Use this standard Color control to set the color of the light.

Intensity

Use this slider to set the intensity of the light. A value of 0.2 indicates 20% percent light.

Exposure

This will change how much light will expose a scene; this is similar to Intensity.

Color Temperature / Enable

This sets the color temperature of a light source. Its default is 6500K, which is daylight temperature.

Diffuse Response

Controls the amount the light will contribute to the Diffuse color of a material.

Specular Response

Controls the amount the light will contribute to the Specular color of a material.

Normalize

This will normalize the light’s contribution in the scene.

Shaping Focus

This defines focus point of the lens effect of this light.

Shaping Cone Angle

Defines the spread of the light.

Radius

Defines the diameter of the light.

uDisk Light Node Transform tab

The Transform tab in the Inspector is also duplicated in other USD nodes.

uDisk Light Node Settings tab

The Settings tab in the Inspector is also duplicated in other USD nodes.