OptionalambientThe illumination color for ambient light rather than direct light.
OptionaldiffuseThe color of the light.
OptionalpitchThe fixed pitch angle, in degrees, to use for the head light. A value of -90 points down towards the ground, a value of 90 points straight up at the sky. If you want the light to exactly follow the camera and not have a fixed pitch angle, you can set the pitch to null.
Options to create a head light.