API Reference > geometry-core > Polyface > PolyfaceQuery > computeFacetUnitNormal computeFacetUnitNormal MethodStatic Try to compute a unit normal for a facet accessible through a visitor. Unit normal is computed by PolygonOps.unitNormal with the points around the facet. computeFacetUnitNormal(visitor: PolyfaceVisitor, facetIndex: number, result?: Vector3d): Vector3d | undefined Parameter Type Description visitor PolyfaceVisitor facetIndex number result Vector3d Returns - Vector3d | undefined Defined in core/geometry/src/polyface/PolyfaceQuery.ts Line 872 Last Updated: 13 June, 2024