API Reference > geometry-core > Curve > CurveFactory > createLineSpiralSpiralLineWithSpiralLength createLineSpiralSpiralLineWithSpiralLength MethodStatic Compute 2 spirals (all in XY) for a symmetric line-to-line transition. Spiral length is given. tangency points float on both lines. createLineSpiralSpiralLineWithSpiralLength(spiralType: IntegratedSpiralTypeName, pointA: Point3d, pointB: Point3d, pointC: Point3d, spiralLength: number): undefined | GeometryQuery[] Parameter Type Description spiralType IntegratedSpiralTypeName name of spiral type. THIS MUST BE AN "Integrated" SPIRAL TYPE pointA Point3d inbound start point. pointB Point3d pointC Point3d spiralLength number for each part of the spiral pair. Returns - undefined | GeometryQuery[] array with the computed spirals, or undefined if failure. Defined in curve/CurveFactory.ts Line 421 Last Updated: 12 June, 2024