Houdini 21.0 Nodes Geometry nodes

Split by Point Attribute geometry node

Splits geometry along edges where a point attribute changes.

Since 21.0

This node detects changes in a point attribute across adjacent edges and inserts new points along those edges. This is useful for separating regions of a mesh based on classification, segmentation, or partitioning information encoded in attributes.

The point attribute is promoted to primitive attribute on the output, identifying each island formed by inserted edges.

Parameters

Attribute

The name of the point attribute to compare when identifying split edges.

Insert Points at Intersections

Adds new points in polygons where more than two newly created edges meet. This is required to maintain a closed surface.

Insert Points at Quad Corners

Ensures new points are inserted at quad corners to preserve mesh structure when splits occur near quads.

Split Mesh at Edges

When on, separates the geometry along split edges rather than merely disconnecting the attribute topology.

Triangulate Border Primitives

Triangulates primitives along the split boundary for better downstream compatibility and visualization.

Group Border Primitives

When on, adds border primitives which are those affected by splits to a group.

Primitive Group

The name of the group that contains affected primitives created by the split.

Group Border Edges

When on, adds the split edges to a separate group for further processing or visualization.

Edge Group

The name of the group that contains the edges where splitting occurred.

Geometry nodes