OptionalambientThe illumination color for ambient light rather than direct light. The value is an RGB color defined in linear color space.
OptionaldiffuseThe color of the light. The value is an RGB color defined in linear color space.
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.