Thermal simulates Thermal Erosion that can create talus and debris.
Using Thermal Erosion
Selective Processing
Like with the Erosion node, you can modulate how
Thermal Stress Anisotropy
Thermal Stress Anisotropy governs how erosion and the resulting rocks deposits are shaped. It smooths the terrain while eroding. Low values keep the original terrain intact for the most part, while high values create stronger talus at the expense of eroding the original terrain. For example, sharp peaks get eroded heavily with high stress values.
The image below shows a simplified version of how Thermal Stress Anisotropy affects a terrain.
Combining with Hydraulic Erosion
In the real world, hydraulic and thermal erosion occur together. You can mimic this behavior by chaining Thermal and Erosion (or Wizard) nodes, as shown in the Layering Erosion section in erosions.
Selective Processing can be a very powerful tool in such a chain of nodes, for both Thermal and Erosion.
Properties
| ErosionControls how long the thermal erosion process is applied. Higher values result in more extensive terrain changes over time. | |
| Duration | Controls how long the thermal erosion process is applied. Higher values result in more extensive terrain changes over time. |
| Strength | Sets the intensity of thermal erosion. Increasing this value produces more pronounced smoothing and displacement, especially on steep slopes. |
| Anisotropy | Adjusts the directional bias of erosion and deposit formation. Low values preserve the original terrain, while high values intensify directional erosion, shaping talus deposits and terrain features. |
| Seed | Randomizes the erosion pattern while keeping other settings unchanged, allowing for varied results without retuning parameters. |
| TalusSets the maximum slope angle before material begins to move downward, forming talus. Lower angles create gentler slopes, while higher angles allow steeper terrain before shifting occurs. | |
| Angle | Sets the maximum slope angle before material begins to move downward, forming talus. Lower angles create gentler slopes, while higher angles allow steeper terrain before shifting occurs. |
| Settling | Controls how quickly and thoroughly loose material settles after being eroded. Higher values result in faster, more complete settling, while lower values allow for gradual accumulation. |
| Sediment Removal | Determines the amount of sediment removed during talus formation. Higher values produce cleaner, sharper features, while lower values allow more sediment to accumulate, creating smoother transitions. |
| ScaleSets the scale of the largest thermal erosion features in the terrain. Larger values create broader, more pronounced features; smaller values result in finer details. | |
| Feature Scale | Sets the scale of the largest thermal erosion features in the terrain. Larger values create broader, more pronounced features; smaller values result in finer details. |
| Real Scale | Uses the scale defined by the terrain's physical dimensions. Disable to access additional options and manually adjust erosion physics. |
| Terrain Scale | Specifies the overall scale of the terrain when Real Scale is turned off, allowing for manual adjustment of terrain size. |
| Verticality | Controls the height of the terrain when Real Scale is turned off, enabling further customization of vertical exaggeration. |
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