API Reference > geometry-core > CartesianGeometry > Ellipsoid > constantLongitudeArc constantLongitudeArc Method Return an arc (circular or elliptical) at constant longitude constantLongitudeArc(longitude: Angle, latitudeSweep: AngleSweep, result?: Arc3d): Arc3d | undefined Parameter Type Description longitude Angle (strongly typed) longitude latitudeSweep AngleSweep result Arc3d Returns - Arc3d | undefined Defined in core/geometry/src/geometry3d/Ellipsoid.ts Line 497 Last Updated: 13 June, 2024