Question Radial movement for noise inside shader

Hi guys,

I'm currently trying to learn 3D VFX and run into the same issue I ran into a while back. I have created a tear like shape (stretched sphere with bottom cut off) and created the UV map in a way that represents a circle (similar to the top of the mesh). I created the UVs like that in order to prevent the mesh from ripping apart when I animate them with vertex displacement.

The problem I face now is that I want to create a noise pattern to create the desired vertex displacement, but the only scrolling of textures I have done so far is from left to right or top to bottom etc. however this time I would need the noise to move in a radial manner from inside to outside.

This must be a very common problem and I wonder how I can solve this? If the answer is to create a different UV map then I would be fine with that as well. My end goal is to use vertex displacement to make the shape wobble a bit to give the impression of a flame.



cheers!

 

I stumbled upon the solution myself by accident. Using polar coordinates did exactly what I wanted: