API Reference > geometry-core > Polyface > PolyfaceQuery > buildPerFaceNormals buildPerFaceNormals MethodStatic Set up indexed normals with one normal in the plane of each facet of the mesh. buildPerFaceNormals(polyface: IndexedPolyface): void Parameter Type Description polyface IndexedPolyface Returns - void Defined in polyface/PolyfaceQuery.ts Line 962 Last Updated: 12 June, 2024