create MethodStatic

Create a B-spline curve with given knots.

• The poles have several variants:
  • Float64Array(3 * numPoles) in blocks of [x,y,z].
  • Point3d[].
  • number[][], with inner dimension 3.
• 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.
• Visualization can be found at https://www.itwinjs.org/sandbox/SaeedTorabi/BSpline/

create(poleArray: Float64Array | number[][] | Point3d[], knotArray: Float64Array | number[], order: number): undefined | BSplineCurve3d

Returns - undefined | BSplineCurve3d

Defined in

• bspline/BSplineCurve.ts Line 593