API Reference > geometry-core > Bspline > BezierCurveBase > fractionToParentFraction fractionToParentFraction Method map fraction from this Bezier curves inherent 0..1 range to the (a,b) range of parent ( The parent range should have been previously defined with setInterval) fractionToParentFraction(fraction: number): number Parameter Type Description fraction number Returns - number Defined in core/geometry/src/bspline/BezierCurveBase.ts Line 96 Last Updated: 15 June, 2021