API Reference > core-geometry > Serialization > BSplineCurve3dH > create

create MethodStatic

Create a bspline with given knots.

  • The poles have several variants:

    • Float64Array(4 * numPoles) in blocks of [wx,xy,wz,w]
    • Point4d[numPoles]
    • Point3d[], with implied unit weight to be added.
    • {xyz: Float64Array(3 * numPoles), weights: Float64Array (numPoles)}

  • Two count conditions are recognized:

** If poleArray.length + order == knotArray.length, the first and last are assumed to be the extraneous knots of classic clamping. ** If poleArray.length + order == knotArray.length + 2, the knots are in modern form.

create(controlPointData: Point3d[] | Float64Array | Point4d[] | { weights: Float64Array, xyz: Float64Array }, knotArray: number[] | Float64Array, order: number): undefined | BSplineCurve3dH

Parameter Type Description
controlPointData Point3d[] | Float64Array | Point4d[] | { weights: Float64Array, xyz: Float64Array }  
knotArray number[] | Float64Array  
order number  

Returns - undefined | BSplineCurve3dH

Defined in

Last Updated: 20 June, 2023