RimLighting Material (TGorillaRimLightingMaterialSource)

The rim lighting material TGorillaRimLightingMaterialSource is inherited from the TGorillaDefaultMaterialSource and supports multiple lights and many more features.

A rim light is placed behind a subject that exposes the outline or rim of the subject with light. This lighting highlights the contours of a subject and creates a dramatic and mysterious effect.

Rim lights can be used in a variety of ways. They can be used alone as a rim lighting setup to create a high contrast, stylized image. They can also be used in conjunction with other lighting setups such as the traditional 3 point lighting setup. When used in other lighting setups, these lights are often referred to as “hair lights” or “halo lighting.”

https://www.studiobinder.com/blog/what-is-a-rim-light-photography-definition/