API Reference > geometry-core > CartesianGeometry > Ellipsoid > surfaceNormalToRadians surfaceNormalToRadians Method Deprecated Instead of using Point2d to carry radians, use surfaceNormalToAngles which carries radians in LongitudeLatitudeNumber. Find the (unique) extreme point for a given true surface perpendicular vector (outward) surfaceNormalToRadians(normal: Vector3d, result?: Point2d): Point2d Parameter Type Description normal Vector3d result Point2d Returns - Point2d Defined in core/geometry/src/geometry3d/Ellipsoid.ts Line 637 Last Updated: 13 June, 2024