API Reference › core-geometry › Bspline › AkimaCurve3d

AkimaCurve3d Class

Interpolating curve.

Extends

Methods

Name Description
clone(): AkimaCurve3d Return a deep clone  
cloneProps(): AkimaCurve3dProps Clone the AkimaCurve3dProps object in this AkimaCurve3dProps  
copyFitPointsFloat64Array(): Float64Array Return a (copy of) the defining points, packed as a Float64Array  
dispatchToGeometryHandler(handler: GeometryHandler): any Double Dispatch call pattern.  
isAlmostEqual(other: GeometryQuery): boolean Test for exact structure and nearly identical geometry.  
isSameGeometryClass(other: GeometryQuery): boolean Test if other is also an AkimaCurve3d  
reverseInPlace(): void Reverse the curve direction.  
toJSON(): any Return json key-value pairs for for this AkimaCurve3d.  
tryTransformInPlace(transform: Transform): boolean Transform this AkimaCurve3d and its defining data in place  
create(options: AkimaCurve3dOptions | AkimaCurve3dProps): undefined | AkimaCurve3d Static Create an AkimaCurve3d based on points, knots, and other properties in the AkimaCurve3dProps or AkimaCurve3dOptions.  
createCapture(options: AkimaCurve3dOptions): undefined | AkimaCurve3d Static    

Inherited methods

Name Inherited from Description
addMappedStrokesToLineString3D(map: StrokeCountMap, linestring: LineString3d): number ProxyCurve Evaluate strokes at fractions indicated in a StrokeCountMap.
announceClipIntervals(_clipper: Clipper, _announce?: AnnounceNumberNumberCurvePrimitive): boolean ProxyCurve Find intervals of this curvePrimitive that are interior to a clipper
appendPlaneIntersectionPoints(plane: PlaneAltitudeEvaluator, result: CurveLocationDetail[]): number ProxyCurve Compute intersections of the curve with a plane.
clonePartialCurve(fractionA: number, fractionB: number): undefined | CurvePrimitive ProxyCurve Implement by proxyCurve.
cloneTransformed(transform: Transform): undefined | ProxyCurve ProxyCurve Return a transformed clone.
closestPoint(spacePoint: Point3d, extend: VariantCurveExtendParameter, result?: CurveLocationDetail): undefined | CurveLocationDetail ProxyCurve Search for a point on the curve that is closest to the spacePoint.
collectCurvePrimitives(collectorArray?: CurvePrimitive[], smallestPossiblePrimitives: boolean = false, explodeLinestrings: boolean = false): CurvePrimitive[] ProxyCurve Return an array containing only the curve primitives.
collectCurvePrimitivesGo(collectorArray: CurvePrimitive[], _smallestPossiblePrimitives: boolean, _explodeLinestrings: boolean = false): void ProxyCurve Return an array containing only the curve primitives.
computeAndAttachRecursiveStrokeCounts(options?: StrokeOptions, parentMap?: StrokeCountMap): void ProxyCurve Attach StrokeCountMap structure to this primitive (and recursively to any children)
computeStrokeCountForOptions(options?: StrokeOptions): number ProxyCurve Implement by proxyCurve
constructOffsetXY(offsetDistanceOrOptions: number | OffsetOptions): undefined | CurvePrimitive | CurvePrimitive[] ProxyCurve Implement by proxyCurve
curveLength(): number ProxyCurve Return the length of the curve.
curveLengthBetweenFractions(fraction0: number, fraction1: number): number ProxyCurve Returns a (high accuracy) length of the curve between fractional positions.
curveLengthWithFixedIntervalCountQuadrature(fraction0: number, fraction1: number, numInterval: number, numGauss: number = 5): number ProxyCurve Run an integration (with a default Gaussian quadrature) with a fixed fractional step
emitStrokableParts(dest: IStrokeHandler, options?: StrokeOptions): void ProxyCurve Implement by proxyCurve
emitStrokes(dest: LineString3d, options?: StrokeOptions): void ProxyCurve Implement by proxyCurve
endPoint(result?: Point3d): Point3d ProxyCurve Return the end point of the primitive.
extendRange(rangeToExtend: Range3d, transform?: Transform): void ProxyCurve Implement by proxyCurve
fractionAndDistanceToPointOnTangent(fraction: number, distance: number): Point3d ProxyCurve Construct a point extrapolated along tangent at fraction.
fractionToCurvature(fraction: number): undefined | number ProxyCurve Returns the (absolute) curvature magnitude.
fractionToFrenetFrame(fraction: number, result?: Transform): undefined | Transform ProxyCurve Construct a frenet frame:
fractionToPoint(fraction: number, result?: Point3d): Point3d ProxyCurve Implement by proxyCurve
fractionToPointAnd2Derivatives(fraction: number, result?: Plane3dByOriginAndVectors): undefined | Plane3dByOriginAndVectors ProxyCurve Implement by proxyCurve
fractionToPointAndDerivative(fraction: number, result?: Ray3d): Ray3d ProxyCurve Implement by proxyCurve
fractionToPointAndUnitTangent(fraction: number, result?: Ray3d): Ray3d ProxyCurve Returns a ray whose origin is the curve point and direction is the unit tangent.
fractionToSignedXYRadiusOfCurvature(fraction: number): number ProxyCurve Construct signed distance from a point on the planar curve to its center of curvature (in xy only).
getFractionToDistanceScale(): undefined | number ProxyCurve If the curve primitive has distance-along-curve strictly proportional to curve fraction, return the scale factor.
isInPlane(plane: Plane3dByOriginAndUnitNormal): boolean ProxyCurve Implement by proxyCurve
moveSignedDistanceFromFraction(startFraction: number, signedDistance: number, allowExtension: boolean, result?: CurveLocationDetail): CurveLocationDetail ProxyCurve (Attempt to) find a position on the curve at a signed distance from start fraction.
moveSignedDistanceFromFractionGeneric(startFraction: number, signedDistance: number, allowExtension: boolean, result?: CurveLocationDetail): CurveLocationDetail Protected ProxyCurve Generic algorithm to search for point at signed distance from a fractional startPoint.
projectedParameterRange(ray: Vector3d | Ray3d, lowHigh?: Range1d): undefined | Range1d ProxyCurve Implement by proxyCurve
quickLength(): number ProxyCurve Implement by proxyCurve
range(transform?: Transform, result?: Range3d): Range3d ProxyCurve Implement by proxyCurve
rangeBetweenFractions(fraction0: number, fraction1: number, transform?: Transform): Range3d ProxyCurve Returns a (high accuracy) range of the curve between fractional positions
rangeBetweenFractionsByClone(fraction0: number, fraction1: number, transform?: Transform): Range3d ProxyCurve Returns a (high accuracy) range of the curve between fractional positions
rangeBetweenFractionsByCount(fraction0: number, fraction1: number, count: number, transform?: Transform, extrapolationFactor: number = 0.0): Range3d ProxyCurve Returns an approximate range based on a fixed number of evaluations
startPoint(result?: Point3d): Point3d ProxyCurve Return the startPoint of the primitive.
tryTranslateInPlace(dx: number, dy: number = 0.0, dz: number = 0.0): boolean ProxyCurve Try to move the geometry by dx,dy,dz.
areAlmostEqual(a: undefined | GeometryQuery, b: undefined | GeometryQuery): boolean Static ProxyCurve Apply instance method ProxyCurve.isAlmostEqual if both are defined.
installStrokeCountMap(curve: CurvePrimitive, curveMap: StrokeCountMap, parentMap?: StrokeCountMap): void Static ProxyCurve Final install step to save curveMap in curve.

Properties

Name Type Description
curvePrimitiveType Readonly "interpolationCurve" String name for schema properties  

Inherited properties

Name Type Inherited from Description
_proxyCurve Protected CurvePrimitive ProxyCurve  
children Accessor ReadOnly undefined | GeometryQuery[] ProxyCurve Return GeometryQuery children for recursive queries.
* leaf classes do not need to implement.
geometryCategory Readonly "curvePrimitive" ProxyCurve String name for schema properties
isExtensibleFractionSpace Accessor ReadOnly boolean ProxyCurve * Returns true if the curve can be easily extended past its start/end point (i.e., beyond the usual
fraction space [0,1]). Otherwise, returns false.
* Base class default implementation returns false.
* These classes (and perhaps others in the future) will return true:
* LineSegment3d
* LineString3d
* Arc3d
parent undefined | any ProxyCurve Data attached by various algorithms (e.g.
proxyCurve Accessor ReadOnly CurvePrimitive ProxyCurve Return the (pointer to) the proxy curve.
strokeData undefined | StrokeCountMap ProxyCurve Data attached during stroking for facets.

Defined in

Last Updated: 16 April, 2024