API Reference > geometry-core > Serialization > BSplineCurve3dH > extendRange extendRange Method Extend a range so in includes the range of this curve REMARK: this is based on the poles, not the exact curve. This is generally larger than the true curve range. extendRange(rangeToExtend: Range3d, transform?: Transform): void Parameter Type Description rangeToExtend Range3d transform Transform transform to apply to points as they are entered into the range. Returns - void Defined in bspline/BSplineCurve3dH.ts Line 424 Last Updated: 11 June, 2024