Wind Config
Assigns wind animation classes and response parameters to your skeleton for layered, realistic motion in game engines. Chain multiple Wind Configs for trunk, mid-branch, and tip behaviours.
Wind Config assigns wind animation classes and response parameters to the tree's skeleton. Each node defines one wind response class (a set of stiffness and influence values controlling how bones at a given depth react to wind) and produces one wind class in the Unreal output. Chain multiple Wind Configs to build layered behaviour: a stiff trunk, moderately flexible mid-branches, highly responsive leaf-bearing tips.
Parameters
| Parameter | Description |
|---|---|
| Base Group | Group expression selecting which bones (or which depth range) this Wind Config applies to. |
| Carve | Mode and direction for carving the assigned region. By default a layer carves up from the trunk; switch direction to carve down from the leaves for a branch/tip layer. |
| Root Distance | Distance (the carve distance) over which this layer applies. Increase it to spread the layer further from its carve origin. |
| Influence | How strongly bones in this layer respond to wind. |
| Stiffness | How resistant bones in this layer are to wind displacement. Reduce it on a tip layer to get secondary shake. |
| Is Anchor | Marks the layer as an anchor (typically the trunk). |
| Preview Mode | Display mode for in-viewport preview. |
| Select Input | Input selection for the preview. |
| Set Color Attribute | Toggle for writing a colour attribute that visualises the assignment. Each layer shows in its own colour so you can see where the boundaries fall. |
Notes
- Chainable: each node in the chain produces one wind class in the final
wind.jsonthat ships with the Unreal export. - Place the Wind Config chain before Export Unreal Nanite Assembly, and run Simplify Tree Rig and Skin first to keep the joint count sensible.
- Setting the node's display plays back a cheap in-viewport preview of where the layers fall. It is a visual guide only: it does not mimic Unreal's wind one-for-one. The engine-side animation is the source of truth for the final look.
See also: Wind for Unreal · Take Your Tree to Unreal · Wind Previs · Simplify Tree Rig and Skin · Export Unreal Nanite Assembly