API Reference > geometry-core > Bspline > Bezier1dNd Bezier1dNd Class Shared implementation details for derived bezier curve classes BezierCurve3d implements with blockSize 3. BezierCurve3dH implements with blockSize 4. Methods Name Description constructor(blockSize: number, polygon: Float64Array): Bezier1dNd clonePolygon(result?: Float64Array): Float64Array return a clone of the data array evaluate(s: number, buffer?: Float64Array): Float64Array Return the curve value at bezier fraction s evaluateDerivative(s: number, buffer?: Float64Array): Float64Array Return the curve derivative value at bezier fraction s fractionToParentFraction(fraction: number): number map a fraction to the parent space. getPolygonPoint(i: number, buffer?: Float64Array): undefined | Float64Array get a single point of the polygon as a simple array. interpolatePoleInPlace(poleIndexA: number, fraction: number, poleIndexB: number): void interpolate at fraction between poleA and poleB. isAlmostEqual(other: any): boolean equality test with usual metric tolerances loadSpanPoles(data: Float64Array, spanIndex: number): void Load order * dimension doubles from data[dimension * spanIndex] as poles loadSpanPolesWithWeight(data: Float64Array, dataDimension: number, spanIndex: number, weight: number): void Load order * (dataDimension + 1) doubles from data[dataDimension * spanIndex] as poles with weight inserted reverseInPlace(): void block-by-block reversal saturateInPlace(knots: KnotVector, spanIndex: number): boolean Compute new control points to "clamp" bspline unsaturated support to saturated form. setInterval(a: number, b: number): void create or update the mapping to parent curve. setPolygonPoint(i: number, buffer: Float64Array): void set a single point of the polygon as a simple array. subdivideInPlaceKeepLeft(fraction: number): boolean Apply deCasteljou interpolations to isolate a smaller bezier polygon, representing interval 0..fraction of the original subdivideInPlaceKeepRight(fraction: number): boolean Apply deCasteljou interpolations to isolate a smaller bezier polygon, representing interval 0..fraction of the original subdivideToIntervalInPlace(fraction0: number, fraction1: number): boolean Saturate a univariate bspline coefficient array in place unpackToJsonArrays(): any[] return a json array of arrays with each control point as a lower level array of numbers create(data: Point3d[] | Point2d[] | Point4d[]): undefined | Bezier1dNd Static Create a Bezier1dNd, using the structure of data[0] to determine the bezier order. saturate1dInPlace(coffs: Float64Array, knots: KnotVector, spanIndex: number): boolean Static Saturate a univariate bspline coefficient array in place Properties Name Type Description interval undefined | Segment1d optional interval for mapping to a parent object order Accessor ReadOnly number Return the bezier order packedData Accessor ReadOnly Float64Array return the packed data array. Defined in bspline/Bezier1dNd.ts Line 24 Last Updated: 11 June, 2024