Creating rainbow animations in Unreal Engine involves manipulating materials and textures to achieve a dynamic, iridescent effect. A common approach is to use a combination of emissive materials, noise textures, and vertex animation to simulate the gradual color transitions and shimmering appearance of a rainbow.
Rainbow animations can enhance the visual appeal of games and other interactive experiences, adding an element of fantasy and whimsy. They can be used to create eye-catching effects for spells, particle systems, and environmental elements, contributing to a more immersive and engaging user experience.