API Reference > geometry-core > Topology > HalfEdgeGraphSearch > collectExtendedBoundaryLoopFromSeed collectExtendedBoundaryLoopFromSeed MethodStatic Announce nodes that are "extended face boundary" by conditions (usually mask of node and mate) in test functions. After each node, the next candidate in reached by looking "around the head vertex loop" for the next boundary. "Around the vertex" from nodeA means First look at nodeA.faceSuccessor; Then look at vertexPredecessor around that vertex loop. Each accepted node is passed to announceNode, and marked with the visit mask. The counter of the announceEdge function is zero for the first edge, then increases with each edge. collectExtendedBoundaryLoopFromSeed(seed: , visitMask: , isBoundaryEdge: , announceEdge: (edge: , counter: number) => void): void Parameter Type Description seed start node. visitMask isBoundaryEdge announceEdge (edge: , counter: number) => void Returns - void Defined in topology/HalfEdgeGraphSearch.ts Line 264 Last Updated: 11 June, 2024