API Reference > geometry-core > Curve > PathFragment > childFractionTChainDistance childFractionTChainDistance Method convert a fractional position on the childCurve to distance in the chain space. Return value is SIGNED -- will be negative when fraction < this.childFraction0. childFractionTChainDistance(fraction: number): number Parameter Type Description fraction number fraction along the curve within this fragment Returns - number Defined in core/geometry/src/curve/CurveChainWithDistanceIndex.ts Line 110 Last Updated: 13 June, 2024