ImageGear .NET v25.0 - Updated
Functional Lights Effects
User Guide > How to Work with... > Image Processing and Cleanup > Advanced Image Processing and Correction > Image Effects > Functional Lights Effects

Functional Lights methods change the colors of an image according to the pattern of a sine wave, or an application defined pattern. The image will appear to have circles or bars of light and/or shadow overlaid on top of it.

Original Image Image with Directional Light Effect
Image with Radial Light Effect Image with Free Directional Light Effect