Documentation / Node reference / geo nodes
geo/ConvexHull2D
Wraps each input object's points in the smallest convex outline, in the XY plane.
Topology
One closed polyline per input object: the tightest convex shape containing all of that object's points, seen from +Z. The z of every point is ignored, so this is a shadow of the shape onto its own XY plane and not a 3D hull. The hull is computed in the object's own frame, which is exact because a hull is affine, and the result carries that object's transform and attributes, so it stays with the shape it wrapped.
Parameters
| Name | Type | What it does |
|---|---|---|
| expand | Float | Push the outline outward by this distance, leaving a margin around the points. 0 touches them. |
See also
This page is generated from the engine, so it describes the release you can download. The same text is in the editor's Help panel next to the node itself.