API Reference > geometry-core > Curve > PathFragment PathFragment Class Annotation of an interval of a curve. The interval is marked with two pairs of numbers: fraction0, fraction1 = fraction parameters along the child curve distance0,distance1 = distances within containing CurveChainWithDistanceIndex Methods Name Description constructor(childFraction0: number, childFraction1: number, distance0: number, distance1: number, childCurve: CurvePrimitive): PathFragment Create a fragment with complete fraction, distance and child data. chainDistanceToAccurateChildFraction(chainDistance: number): number Convert chainDistance to true chidFraction, using detailed moveSignedDistanceFromFraction chainDistanceToInterpolatedChildFraction(distance: number): number Convert distance to local fraction, and apply that to interpolate between the stored curve fractions. childFractionTChainDistance(fraction: number): number convert a fractional position on the childCurve to distance in the chain space. containsChainDistance(distance: number): boolean Return true if the distance is within the distance limits of this fragment. containsChildCurveAndChildFraction(curve: CurvePrimitive, fraction: number): boolean Return true if this fragment addresses curve and brackets fraction fractionScaleFactor(globalDistance: number): number Return the scale factor to map childCurve fraction derivatives to chain fraction derivatives reverseFractionsAndDistances(totalDistance: number): void Reverse the fraction and distance data. Properties Name Type Description chainDistance0 number distance along parent to this fragment start chainDistance1 number distance along parent to this fragment end childCurve CurvePrimitive Curve primitive of this fragment childFraction0 number Fractional position of this fragment start within its curve primitive. childFraction1 number Fractional position of this fragment end within its curve primitive.. Defined in curve/CurveChainWithDistanceIndex.ts Line 34 Last Updated: 11 June, 2024