API Reference > geometry-core > CartesianGeometry > EllipsoidPatch > anglesToUnitNormalRay anglesToUnitNormalRay Method Compute point (with altitude) at given angles and altitude. Never fails for non-singular ellipsoid. In the returned ray, ray.origin is the point at requested altitude. ray.direction is an outward-directed unit vector anglesToUnitNormalRay(position: LongitudeLatitudeNumber, result?: Ray3d): undefined | Ray3d Parameter Type Description position LongitudeLatitudeNumber longitude, latitude, and height result Ray3d Returns - undefined | Ray3d Defined in geometry3d/Ellipsoid.ts Line 868 Last Updated: 11 June, 2024