Trunk Decoration

Specialised surface decoration for trunks, with enhanced UV and displacement controls. Mounts baked high-poly trunks onto the simulation's output and supports trunk extension.

The Trunk Decoration is a specialised Surface Decoration for main stems and trunks, with extra controls for root flaring, cap handling, and seamless bark UVs on thick geometry. It also carries the baked output of the high-poly workflow onto a Grow, and its geometry feeds back into the simulate's procedural extension step (the one decoration that does so).

Inputs

InputDescription
Input 0: GraphThe growth graph.

Attributes

AttributeDescription
widthConsumed.
PConsumed.
orientConsumed.

Outputs

OutputDescription
Output: GraphThe graph with trunk meshing instructions.

Decoration data carried to the Simulate. In the trunk-extension case, the decoration's geometry also feeds back into the simulate's procedural extension step.

Parameters

Flare

ParameterDescription
WidthHow much the base widens. Controls the radial expansion at the base of the trunk for a natural root flare appearance.
HeightHow far up the trunk the flare extends. Defines the vertical range over which the base widening is applied.

Caps

ParameterDescription
Top / BottomCap style for the cut ends of the mesh: Open, Flat, or Rounded.

Notes

  • Use standard Surface Decoration for smaller branches; reserve Trunk Decoration for the hero trunk and roots.
  • Root flaring grounds the tree in the scene and is critical to a convincing silhouette.

See also: Trunk decoration (feature) · Scans (overview) · Trunk Extension · Surface Decoration · Assembly Decoration

Treeparameterize

Resamples and parameterises an input tree geometry, transferring attributes onto the resampled curves. Used to bring externally-authored or imported tree shapes into the parameterised form Natsura's downstream nodes expect.

Unreal Wizard (Deprecated)

Deprecated. Use the Nanite Skeletal Assembly export workflow instead.