Class AcGeNurbsCurve

A NURBS curve implementation that can be used by other curve classes

Constructors

constructor

Methods

clone controlPoints degree getParameterRange getPoints isClosed knots length point weights byKnotsControlPointsWeights byPoints createClosedCurve createFitPointsForClosedCurve

Constructors

constructor

  • new AcGeNurbsCurve(
        degree: number,
        knots: number[],
        controlPoints: AcGeVector3dLike[],
        weights?: number[],
    ): AcGeNurbsCurve

  • Parameters

    • degree: number
    • knots: number[]
    • controlPoints: AcGeVector3dLike[]
    • Optionalweights: number[]

    Returns AcGeNurbsCurve

Methods

clone

  • clone(): AcGeNurbsCurve

  • Return a deep-cloned copy of this NURBS curve.

    Returns AcGeNurbsCurve

controlPoints

degree

  • degree(): number

  • Get the degree of the NURBS curve

    Returns number

getParameterRange

  • getParameterRange(): { end: number; start: number }

  • Get the valid parameter range for this curve

    Returns { end: number; start: number }

getPoints

  • getPoints(divisions: number): number[][]

  • Get points along the curve

    Parameters

    • divisions: number

      Number of divisions to create

    Returns number[][]

    Array of points along the curve

isClosed

  • isClosed(tolerance?: number): boolean

  • Check if the curve is closed by comparing start and end points

    Parameters

    • Optionaltolerance: number

    Returns boolean

knots

  • knots(): number[]

  • Get the knot vector

    Returns number[]

length

  • length(): number

  • Calculate curve length using numerical integration

    Returns number

point

  • point(u: number): number[]

  • Calculate a point on the curve at parameter u

    Parameters

    • u: number

    Returns number[]

weights

  • weights(): number[]

  • Get the weights

    Returns number[]

StaticbyKnotsControlPointsWeights

  • byKnotsControlPointsWeights(
        degree: number,
        knots: number[],
        controlPoints: AcGeVector3dLike[],
        weights?: number[],
    ): AcGeNurbsCurve

  • Create a NURBS curve from control points and knots

    Parameters

    • degree: number
    • knots: number[]
    • controlPoints: AcGeVector3dLike[]
    • Optionalweights: number[]

    Returns AcGeNurbsCurve

StaticbyPoints

  • byPoints(
        points: number[][],
        degree: number,
        parameterization?: AcGeKnotParameterizationType,
        startTangent?: number[],
        endTangent?: number[],
    ): AcGeNurbsCurve

  • Create a NURBS curve from fit points using interpolation

    Parameters

    • points: number[][]
    • degree: number
    • Optionalparameterization: AcGeKnotParameterizationType
    • OptionalstartTangent: number[]
    • OptionalendTangent: number[]

    Returns AcGeNurbsCurve

StaticcreateClosedCurve

StaticcreateFitPointsForClosedCurve

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