API Reference > geometry-core > Polyface > IndexedPolyface > addNormalXYZ addNormalXYZ Method Add a normal vector given by direct coordinates addNormalXYZ(x: number, y: number, z: number): number Parameter Type Description x number y number z number Returns - number 0-based index of the added or reused param. Defined in core/geometry/src/polyface/Polyface.ts Line 381 Last Updated: 13 June, 2024