SimpleGrassWind

hey guys,
Is there any way to make the SimpleGrassWind node affect only my green sheets not the whole tree?

You could do that with vertex painting. Just paint a colour onto your mesh in your 3d program and then you can control that in the material. So e.g that the wind just appears on the painted area. When I’m back at home I can send you a picture of the setup.

thanx! the picture would be very helpfull, i’m not so much into vertex painting… but is there any other way? I mean the sheets are green and the rest is brown, i thought there is a way to filter the brown coor :slight_smile: and make the wind work only on the green areas…

A small spontaneous tutorial about my suggestion ^^:

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You could also use a mask instead of the vertex node and I think it is even possible with a colour (but I haven’t tried that → so Im not 100% sure)

after adding the lerp in my construction, the whole tree didn’t move at all…

Then try it with the other links at your vertex colour node. Because you can also just use 1 colour for that and probably you have just painted on a red/blue/green colour.

That means when i paint with blue, i need to connect from vertex color “blue” to the lerp node ?

Yep, thats how it works.

Just a little hint: When you dont want to do the vertex paint in a 3d program, you could also use the painting tool in the UE4. I think there you can save the vertex group to the mesh.

It works perfectly thanx!