Sine wave on the environment texture I am trying to create a Sine wave that goes around the environment texture (something like what is shown in the attached image)

I have tried to mess up around with the math nodes.
So far I am trying to mess up a bit with the math nodes and I have made this:

Which gives this as a result:

This makes sense, but I cannot figure out a way on how could I do what I want.
How could I create and deal with this kind of issue?
btw: I am quite familiar with trigonometry and mathematical functions as my background is engineering.
That can be this kind of settings:

Base nodes (with X and Y centered from &quot;generated&quot; coordinates, using &quot;vector mapping&quot;)

Take the angle through &quot;separate X Y Z&quot; and &quot;artan2&quot; using X and Y.

Get the &quot;sin&quot;.

And compare it to Z value.


Tuning (in green above)

Multiply the angle with some value to have the wave amount.

Multiply Z to handle the wave height.

Use some value to tune the wave line height.



here a blend file for 2.8: