Natsura Trunk Decoration

The Trunk Decoration is a specialized version of Surface Decoration optimized for main stems and trunks.

• Root Blending: Handles the transition from trunk to ground (flaring).
• Cap Handling: Options for closing the cut ends of the mesh.
• Enhanced UVs: Better controls for seamless bark textures on thick geometry.

== Concept ==

=== Hero Geometry ===

While standard Surface Decoration is fast and good for branches, Trunk Decoration offers the extra controls needed for the "hero" parts of the tree -- the trunk and roots -- where texture fidelity and silhouette are most critical.

Inputs

Graph: The growth graph.

Parameters

Flare

Width : How much the base widens. Controls the radial expansion at the base of the trunk for a natural root flare appearance.

Height : How far up the trunk the flare extends. Defines the vertical range over which the base widening is applied.

Caps

Top/Bottom : Cap style for the cut ends of the mesh: Open, Flat, or Rounded. Controls whether the top and bottom of the trunk mesh are closed.

Related

• Surface Decoration Node — General-purpose skinning for branches and smaller stems.
• Cluster Decoration Node — Attaches external meshes (leaves, flowers) to the skeleton.
• Core Decoration Node — Base decoration node for custom decoration logic.
• Grow Node — Defines where decorations are applied via Decoration sockets.
• Simulate Node — Performs the actual meshing by executing decoration instructions.

@workflow

== Workflow ==

1. Connect Trunk Decoration to your main Trunk Grow node's Decoration socket.
2. Use standard Surface Decoration for the smaller branches.
3. Adjust Flare Width and Height to achieve a natural root spread at the base.

@notes

• Consumes: width, P, orient attributes from the skeleton.
• Root flaring is critical for grounding the tree in the scene and creating a convincing silhouette.
• For branches and smaller stems, the general-purpose Surface Decoration is more appropriate.