In this video tutorial, we use the Hydraulic erosion node to simulate erosion on a terrain.
The Hydraulic erosion node creates realistic erosion and deposition effects caused rainfall and river flows. Erosion simulates the process by which water, ice, wind, or gravity moves fragments of rock and soil. Deposition simulates the process by which sediment settles out of the water or wind that is carrying it, and is deposited in a new location.
The blue areas represent the places where water flows and affects our terrain.
The node has preset parameters. The first three presets - Light, Medium, and Strong - simulate more or less standard erosion. Mostly erosion impacts the erosion on the terrain. Mostly deposition mainly promotes sediment input.
We also have custom parameters: Strength modifies globally the volume of water brought by the simulation. Erosion, as we saw above, directly modifies the impact of this volume on the terrain. Deposition creates a sediment deposit in places where the slope is lower. Hardness is used to define the nature of the soil.
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