How do I make my normal always move down?

Development Rendering
1

So i’m trying to make a water pooring effect by making a normal map pan down the mesh.
But it should always move down even when i rotate the mesh.
Now the normals are moving up and down left and right because I unwrapped the mesh and i’m just panning the normal map down the Y axis.

This should make it clear:
://i1251.photobucket/albums/hh558/eliasleo/WaterPooringHelp.jpg~original

2

I will close this thread because you have a 2nd one with the same topic: https://forums.unrealengine/showthread.php?55092-Water-pooring-effect-with-normals-problem :slight_smile: