Interface Curve2D

_boundingBox

boundingBox

• get boundingBox(): BoundingBox2d

  Compute (and cache) the 2D bounding box of this curve.

  Returns BoundingBox2d

  Remarks

  The returned box is owned by the curve and is disposed when the curve is deleted. Clone it if it must outlive the curve.

firstParameter

• get firstParameter(): number

  Return the parameter value at the start of the curve (cached after first access).

  Returns number

firstPoint

• get firstPoint(): Point2D

  Return the point at the start of the curve (cached after first access).

  Returns Point2D

geomType

• get geomType(): CurveType

  Return the geometric type of this curve (e.g. LINE, CIRCLE, BSPLINE_CURVE).

  Returns CurveType

lastParameter

• get lastParameter(): number

  Return the parameter value at the end of the curve (cached after first access).

  Returns number

lastPoint

• get lastPoint(): Point2D

  Return the point at the end of the curve (cached after first access).

  Returns Point2D

repr

• get repr(): string

  Return a human-readable representation, e.g. LINE (0,0) - (1,1).

  Returns string

wrapped

• get wrapped(): any

  Returns any

[dispose]

• "[dispose]"(): void

  Returns void

clone

• clone(): Curve2D

  Create an independent deep copy of this curve.

  Returns Curve2D

delete

• delete(): void

  Returns void

distanceFrom

• distanceFrom(element: Point2D | Curve2D): number

  Compute the minimum distance from this curve to a point or another curve.

  Parameters

  • element: Point2D | Curve2D

  Returns number

isOnCurve

• isOnCurve(point: Point2D): boolean

  Test whether a point lies on the curve within a tight tolerance (1e-9).

  Parameters

  • point: Point2D

  Returns boolean

parameter

• parameter(point: Point2D, precision?: number): Result<number>

  Project a point onto the curve and return its parameter value.

  Parameters

  • point: Point2D
  • precision: number = 1e-9

  Returns Result<number>

  Ok(parameter) when the point is on the curve, or an error result otherwise.

reverse

• reverse(): void

  Reverse the orientation of this curve in place.

  Returns void

serialize

• serialize(): string

  Serialize this curve to a string that can be restored with deserializeCurve2D.

  Returns string

splitAt

• splitAt(points: number[] | Point2D[], precision?: number): Curve2D[]

  Split this curve at the given points or parameter values.

  Parameters

  • points: number[] | Point2D[]
  • precision: number = 1e-9

  Returns Curve2D[]

  An array of sub-curves whose union covers the original curve.

tangentAt

• tangentAt(index: number | Point2D): Point2D

  Compute the tangent vector at a parameter position or at the projection of a point.

  Parameters

  • index: number | Point2D

    A normalized parameter (0..1) or a Point2D to project onto the curve.

  Returns Point2D

value

• value(parameter: number): Point2D

  Evaluate the curve at the given parameter, returning the 2D point.

  Parameters

  • parameter: number

  Returns Point2D