Adding a Multi-scale erosion node

The Multi-scale erosion node erodes the terrain at different scales. It can erode the terrain more significantly than the Hydraulic erosion or Thermal erosion nodes.

The node has four outputs:

  • The eroded terrain
  • The height of the sediment
  • The depth of the water
  • The cumulative water height

To add a Multi-scale erosion node, right-click in the Graph Editor and select Create Node > Simulation > Multi-scale erosion or press the keyboard shortcut NMSE (Node Multi-Scale Erosion).

Double click on the node to open its parameters:

Editing a Multi-scale erosion node

To edit the Multi-scale erosion node, use the sliders to set the following parameters:

  • Maximum scale: Defines the maximum scale of erosion, between 1 and 3. When this parameter is equal to 1, only one level of erosion is calculated. We achieve with a result close to that obtained with thermal erosion followed by rock erosion. When this parameter is greater than 1, for example when it is equal to 2 or 3, we achieve two levels of erosion: a first level of erosion that works on a scale 2 (respectively 3) times larger, and then erosion at the usual scale.

When the maximum value 3 is used, terrain details may be slightly lost.

  • Large-scale erosion: The intensity of erosion on a greater scale.
  • Small-scale erosion: The intensity of erosion on a smaller scale.
  • Sediment amount: Quantity of sediment produced by erosion.

Example

Here is an example of result obtained using the Multi-scale erosion node.

The input terrain before erosion:



The output terrain after erosion:


Parameters

Parameter Description
Maximum scale Defines the maximum scale of erosion, between 1 and 3.
Large-scale erosion Intensity of erosion on a greater scale.
Small-scale erosion Intensity of erosion on a smaller scale.
Sediment amount Quantity of sediment produced by erosion.

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