Stylized River Generator

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Final Results with
Dynamic Variables:

Graph Overview:

Creating Spline

First, I created a blueprint that spawns a spline and talks to the PCG graph. Inside the PCG graph, I get the spline data to sample it. With a projection node, the spline would align to the landscape surface.

Spawn River Mesh

I spawned cubes with the water material instance I created to form the river.

Adding Rocks in The River

By creating the points to scatter along the spline, I was able to add density noise, adjust the number of points, and add transformation information on the points for the static meshes to inherit.