ProxyCurve Class
A ProxyCurve is expected to be used as a base class for curve types that use some existing curve (the proxy) for evaluation and display but carry other defining data.
- The ProxyCurve implements all required CurvePrimitive methods by dispatching to the proxy.
- These methods presumably require support from the application class and are left abstract:
- clone
- curvePrimitiveType
- isSameCurvePrimitiveType
- isSameGeometryClass
- tryTransformInPlace
- reverseInPlace
Extends
Extended by
Methods
| Name | Description | |
|---|---|---|
| constructor(proxyCurve: CurvePrimitive): ProxyCurve | Constructor CAPTURES the proxyCurve pointer | |
| clone(): ProxyCurve Abstract | Return a deep clone. | |
| clonePartialCurve(fractionA: number, fractionB: number): undefined | CurvePrimitive | Implement by proxyCurve. | |
| cloneTransformed(transform: Transform): undefined | ProxyCurve | Return a transformed clone. | |
| computeStrokeCountForOptions(options?: StrokeOptions): number | Implement by proxyCurve | |
| constructOffsetXY(offsetDistanceOrOptions: number | OffsetOptions): undefined | CurvePrimitive | CurvePrimitive[] | Implement by proxyCurve | |
| dispatchToGeometryHandler(handler: GeometryHandler): any | * "double dispatch" call pattern. | |
| emitStrokableParts(dest: IStrokeHandler, options?: StrokeOptions): void | Implement by proxyCurve | |
| emitStrokes(dest: LineString3d, options?: StrokeOptions): void | Implement by proxyCurve | |
| extendRange(rangeToExtend: Range3d, transform?: Transform): void | Implement by proxyCurve | |
| fractionToPoint(fraction: number, result?: Point3d): Point3d | Implement by proxyCurve | |
| fractionToPointAnd2Derivatives(fraction: number, result?: Plane3dByOriginAndVectors): undefined | Plane3dByOriginAndVectors | Implement by proxyCurve | |
| fractionToPointAndDerivative(fraction: number, result?: Ray3d): Ray3d | Implement by proxyCurve | |
| isInPlane(plane: Plane3dByOriginAndUnitNormal): boolean | Implement by proxyCurve | |
| projectedParameterRange(ray: Ray3d | Vector3d, lowHigh?: Range1d): undefined | Range1d | Implement by proxyCurve | |
| quickLength(): number | Implement by proxyCurve | |
| range(transform?: Transform, result?: Range3d): Range3d | Implement by proxyCurve |
Inherited methods
| Name | Inherited from | Description |
|---|---|---|
| addMappedStrokesToLineString3D(map: StrokeCountMap, linestring: LineString3d): number | CurvePrimitive | * evaluate strokes at fractions indicated in a StrokeCountMap. |
| announceClipIntervals(_clipper: Clipper, _announce?: AnnounceNumberNumberCurvePrimitive): boolean | CurvePrimitive | Find intervals of this curvePrimitive that are interior to a clipper |
| appendPlaneIntersectionPoints(plane: PlaneAltitudeEvaluator, result: CurveLocationDetail[]): number | CurvePrimitive | Compute intersections with a plane. |
| closestPoint(spacePoint: Point3d, extend: VariantCurveExtendParameter): undefined | CurveLocationDetail | CurvePrimitive | Search for the curve point that is closest to the spacePoint. |
| collectCurvePrimitives(collectorArray?: CurvePrimitive[], smallestPossiblePrimitives: boolean = false, explodeLinestrings: boolean = false): CurvePrimitive[] | CurvePrimitive | Return an array containing only the curve primitives. |
| collectCurvePrimitivesGo(collectorArray: CurvePrimitive[], _smallestPossiblePrimitives: boolean, _explodeLinestrings: boolean = false): void | CurvePrimitive | Return an array containing only the curve primitives. |
| computeAndAttachRecursiveStrokeCounts(options?: StrokeOptions, parentMap?: StrokeCountMap): void | CurvePrimitive | attach StrokeCountMap structure to this primitive (and recursively to any children) |
| curveLength(): number | CurvePrimitive | return the length of the curve. |
| curveLengthBetweenFractions(fraction0: number, fraction1: number): number | CurvePrimitive | Returns a (high accuracy) length of the curve between fractional positions |
| curveLengthWithFixedIntervalCountQuadrature(fraction0: number, fraction1: number, numInterval: number, numGauss: number = 5): number | CurvePrimitive | * Run an integration (with a default gaussian quadrature) with a fixed fractional step |
| endPoint(result?: Point3d): Point3d | CurvePrimitive | return the end point of the primitive. |
| fractionAndDistanceToPointOnTangent(fraction: number, distance: number): Point3d | CurvePrimitive | Construct a point extrapolated along tangent at fraction. |
| fractionToCurvature(fraction: number): undefined | number | CurvePrimitive | Returns the (absolute) curvature magnitude. |
| fractionToFrenetFrame(fraction: number, result?: Transform): undefined | Transform | CurvePrimitive | Construct a frenet frame: |
| fractionToPointAndUnitTangent(fraction: number, result?: Ray3d): Ray3d | CurvePrimitive | Returns a ray whose origin is the curve point and direction is the unit tangent. |
| fractionToSignedXYRadiusOfCurvature(fraction: number): number | CurvePrimitive | Construct signed distance from a point on the curve to its center of curvature (in xy only). |
| getFractionToDistanceScale(): undefined | number | CurvePrimitive | * If the curve primitive has distance-along-curve strictly proportional to curve fraction, return the scale factor. |
| isAlmostEqual(other: GeometryQuery): boolean | CurvePrimitive | test for exact structure and nearly identical geometry. |
| isSameGeometryClass(other: GeometryQuery): boolean Abstract | CurvePrimitive | test if (other instanceof this.Type). |
| moveSignedDistanceFromFraction(startFraction: number, signedDistance: number, allowExtension: boolean, result?: CurveLocationDetail): CurveLocationDetail | CurvePrimitive | * (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 | CurvePrimitive | Generic algorithm to search for point at signed distance from a fractional startPoint. |
| rangeBetweenFractions(fraction0: number, fraction1: number, transform?: Transform): Range3d | CurvePrimitive | Returns a (high accuracy) range of the curve between fractional positions |
| rangeBetweenFractionsByClone(fraction0: number, fraction1: number, transform?: Transform): Range3d | CurvePrimitive | 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 | CurvePrimitive | Returns an approximate range based on a fixed number of evaluations |
| reverseInPlace(): void Abstract | CurvePrimitive | Reverse the curve's data so that its fractional stroking moves in the opposite direction. |
| startPoint(result?: Point3d): Point3d | CurvePrimitive | return the startPoint of the primitive. |
| tryTransformInPlace(transform: Transform): boolean Abstract | CurvePrimitive | Attempt to transform in place. |
| tryTranslateInPlace(dx: number, dy: number = 0.0, dz: number = 0.0): boolean | CurvePrimitive | try to move the geometry by dx,dy,dz |
| areAlmostEqual(a: undefined | GeometryQuery, b: undefined | GeometryQuery): boolean Static | CurvePrimitive | apply instance method isAlmostEqual if both are defined. |
| installStrokeCountMap(curve: CurvePrimitive, curveMap: StrokeCountMap, parentMap?: StrokeCountMap): void Static | CurvePrimitive | final install step to save curveMap in curve. |
Properties
| Name | Type | Description | |
|---|---|---|---|
| _proxyCurve Protected | CurvePrimitive | ||
| proxyCurve Accessor ReadOnly | CurvePrimitive | return the (pointer to) the proxy curve. |
Inherited properties
| Name | Type | Inherited from | Description |
|---|---|---|---|
| children Accessor ReadOnly | undefined | GeometryQuery[] | CurvePrimitive | return GeometryQuery children for recursive queries. * leaf classes do not need to implement. |
| curvePrimitiveType AbstractReadonly | CurvePrimitiveType | CurvePrimitive | String name for schema properties |
| geometryCategory Readonly | "curvePrimitive" | CurvePrimitive | String name for schema properties |
| isExtensibleFractionSpace Accessor ReadOnly | boolean | CurvePrimitive | * Returns true if the curve's fraction queries extend beyond 0..1. * Base class default implementation returns false. * These class (and perhaps others in the future) will return true: * LineSegment3d * LineString3d * Arc3d |
| parent | undefined | any | CurvePrimitive | data attached by various algorithms (e.g. |
| strokeData | undefined | StrokeCountMap | CurvePrimitive | data attached during stroking for facets. |
Defined in
- curve/ProxyCurve.ts Line 39
Last Updated: 20 June, 2023