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): undefined | Vector3d Parameter Type Description visitor PolyfaceVisitor facetIndex number result Vector3d Returns - undefined | Vector3d Defined in polyface/PolyfaceQuery.ts Line 929 Last Updated: 12 June, 2024