I have made an animation with Vue xStream 8.4 of a river that have a little bit of foam near the terrain object.
I have a Metanode called "Foam" that is linked to the Displacement, the Bump and the Alpha Output Nodes.

The problem is:

• How to make the changes in the manner that the foam shoreline, along the coast, instead of having a perpendicular movement to the coast, it change the shift movement by 90 degrees as a river water along the coast, instead as in front, without the behavior of the sea?

The bump of the second separated water Node material parallel to the coast is OK.

• But I don't know how to change the behavior of the foam material and how to rotate by 90 degrees the flushing movement of the white foam, along the coast, instead of in front to the coast.

See the attached image of the graph in Function Editor for Foam Material !

Thanks!
Please help!

Horsepower0171.

What if you change the wind direction? This will change the bump direction, but I don't know about the foam.

I suspect that you won't be able to completely control the direction of the foam (even with an suitable invisible object under the surface) because where it appears is determined by the distance to the object below, meaning you're always going to get some on the shores (which is what the node you've used is meant for).