API Reference > geometry-core > Curve > LineString3d > appendFractionToPoint appendFractionToPoint Method Append a suitable evaluation of a curve .. always append the curve point if fraction array is present, append the fraction if derivative array is present, append the derivative BUT ... skip if duplicates the tail of prior points. appendFractionToPoint(curve: CurvePrimitive, fraction: number): void Parameter Type Description curve CurvePrimitive fraction number Returns - void Defined in core/geometry/src/curve/LineString3d.ts Line 919 Last Updated: 13 June, 2024