API Reference > geometry-core > CartesianGeometry > Ellipsoid > projectPointToSurface projectPointToSurface Method Find the closest point of the (patch of the) ellipsoid. In general there are multiple points where a space point projects onto an ellipse. This searches for only one point, using heuristics which are reliable for points close to the surface but not for points distant from highly skewed ellipsoid projectPointToSurface(spacePoint: Point3d): LongitudeLatitudeNumber | undefined Parameter Type Description spacePoint Point3d Returns - LongitudeLatitudeNumber | undefined Defined in core/geometry/src/geometry3d/Ellipsoid.ts Line 245 Last Updated: 13 June, 2024