API Reference > geometry-core > Bspline > BSplineSurface3dH > knotToPoint knotToPoint Method evaluate the surface and return the cartesian (weight = 1) point. if the surface XYZW point has weight0, returns point3d at 000. knotToPoint(knotU: number, knotV: number, result?: Point3d): Point3d Parameter Type Description knotU number u direction knot knotV number v direction knot result Point3d optional result Returns - Point3d Defined in core/geometry/src/bspline/BSplineSurface.ts Line 947 Last Updated: 13 June, 2024