API Reference > geometry-core > Curve > LineSegment3d > fractionToPointAnd2Derivatives fractionToPointAnd2Derivatives Method Construct a plane with origin at the fractional position along the line segment x axis is the first derivative, i.e. along the line segment y axis is the second derivative, i.e. 000 fractionToPointAnd2Derivatives(fraction: number, result?: Plane3dByOriginAndVectors): Plane3dByOriginAndVectors Parameter Type Description fraction number result Plane3dByOriginAndVectors Returns - Plane3dByOriginAndVectors Defined in core/geometry/src/curve/LineSegment3d.ts Line 92 Last Updated: 13 June, 2024