API Reference > geometry-core > Bspline > BSpline2dNd > _poleBuffer1UV _poleBuffer1UV Protected _poleBuffer1UV: Float64Array[] array of 2 scratch array, each sized for one pole used in derivative evaluations, with respective u and v derivatives in the respective arrays. Defined in core/geometry/src/bspline/BSplineSurface.ts Line 297 Last Updated: 13 June, 2024