How to emit light from base color of a wave texture node?

Question

So as you can see I am trying to recreate the added picture using wave texture node and I want only the red color to emit light. So that to do? and what should be the node set up?

Answer 1

If you want the red part to emit light, use the black and white component from your Wave Texture as the Mix Factor Between a red Emission Shader and whatever you want the rest to be (I left it as a default principled BSDF with a black BaseColor, but you can use whatever you want.)