Class AcGeNurbsCurve

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

Index

Constructors

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
- Defined in geometry/AcGeNurbsCurve.ts:23

Methods

clone

clone(): AcGeNurbsCurve
Return a deep-cloned copy of this NURBS curve.

Returns AcGeNurbsCurve
- Defined in geometry/AcGeNurbsCurve.ts:68

controlPoints

controlPoints(): AcGeVector3dLike[]
Get the control points

Returns AcGeVector3dLike[]
- Defined in geometry/AcGeNurbsCurve.ts:54

degree

degree(): number
Get the degree of the NURBS curve

Returns number
- Defined in geometry/AcGeNurbsCurve.ts:40

getParameterRange

getParameterRange(): { end: number; start: number }
Get the valid parameter range for this curve

Returns { end: number; start: number }
- Defined in geometry/AcGeNurbsCurve.ts:153

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
- Defined in geometry/AcGeNurbsCurve.ts:164

isClosed

isClosed(tolerance?: number): boolean
Check if the curve is closed by comparing start and end points
Parameters
- tolerance: number = 1e-6
Returns boolean
- Defined in geometry/AcGeNurbsCurve.ts:179

knots

knots(): number[]
Get the knot vector

Returns number[]
- Defined in geometry/AcGeNurbsCurve.ts:47

length

length(): number
Calculate curve length using numerical integration

Returns number
- Defined in geometry/AcGeNurbsCurve.ts:95

point

point(u: number): number[]
Calculate a point on the curve at parameter u
Parameters
- u: number
Returns number[]
- Defined in geometry/AcGeNurbsCurve.ts:80

weights

weights(): number[]
Get the weights

Returns number[]
- Defined in geometry/AcGeNurbsCurve.ts:61

`Static`byKnotsControlPointsWeights

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
- Defined in geometry/AcGeNurbsCurve.ts:109

`Static`byPoints

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
- parameterization: AcGeKnotParameterizationType = 'Uniform'
- OptionalstartTangent: number[]
- OptionalendTangent: number[]
Returns AcGeNurbsCurve
- Defined in geometry/AcGeNurbsCurve.ts:121

`Static`createClosedCurve

createClosedCurve(
    points: AcGeVector3dLike[],
    degree: number,
    parameterization?: AcGeKnotParameterizationType,
): AcGeNurbsCurve
Create a closed NURBS curve using Catmull-Rom interpolation for smooth closure
Parameters
- points: AcGeVector3dLike[]
- degree: number
- parameterization: AcGeKnotParameterizationType = 'Chord'
Returns AcGeNurbsCurve
- Defined in geometry/AcGeNurbsCurve.ts:217

`Static`createFitPointsForClosedCurve

createFitPointsForClosedCurve(points: AcGeVector3dLike[]): AcGePoint3d[]
Create fit points for a closed NURBS curve using Catmull-Rom interpolation
Parameters
- points: AcGeVector3dLike[]
Returns AcGePoint3d[]
- Defined in geometry/AcGeNurbsCurve.ts:194

Class AcGeNurbsCurve

Index

Constructors

Methods

Constructors

constructor

Parameters

Returns AcGeNurbsCurve

Methods

clone

Returns AcGeNurbsCurve

controlPoints

Returns AcGeVector3dLike[]

degree

Returns number

getParameterRange

Returns { end: number; start: number }

getPoints

Parameters

Returns number[][]

isClosed

Parameters

Returns boolean

knots

Returns number[]

length

Returns number

point

Parameters

Returns number[]

weights

Returns number[]

StaticbyKnotsControlPointsWeights

Parameters

Returns AcGeNurbsCurve

StaticbyPoints

Parameters

Returns AcGeNurbsCurve

StaticcreateClosedCurve

Parameters

Returns AcGeNurbsCurve

StaticcreateFitPointsForClosedCurve

Parameters

Returns AcGePoint3d[]

Settings

On This Page

`Static`byKnotsControlPointsWeights

`Static`byPoints

`Static`createClosedCurve

`Static`createFitPointsForClosedCurve