Mesh Island Node
The Mesh Island node outputs information about separate connected regions, or "islands" of a mesh. Whenever two vertices are connected together by an edge, they are considered as part of the same island, and will have the same Island Index output.
This node's behavior is similar to the Select Linked operator in edit mode, or the Random per Island output of the Geometry shader node.
- Island Index
The index of the each vertex's island. Indices are decided based on the lowest vertex index contained in each island
- Island Count
The total number of mesh islands. This is a single value, and does not vary per element.