API Reference > geometry-core > Bspline > BSplineCurve3d > getSaturatedBezierSpan3dOr3dH getSaturatedBezierSpan3dOr3dH Method Return a BezierCurveBase for this curve. The concrete return type may be BezierCurve3d or BezierCurve3dH according to this type. getSaturatedBezierSpan3dOr3dH(spanIndex: number, prefer3dH: boolean, result?: BezierCurveBase): BezierCurveBase | undefined Parameter Type Description spanIndex number prefer3dH boolean result BezierCurveBase optional reusable curve. This will only be reused if it is a BezierCurve3d with matching order. Returns - BezierCurveBase | undefined Defined in core/geometry/src/bspline/BSplineCurve.ts Line 579 Last Updated: 13 June, 2024