API Reference > geometry-core > Bspline > BSplineCurve3dBase > appendPlaneIntersectionPoints appendPlaneIntersectionPoints Method Implement CurvePrimitive.appendPlaneIntersections appendPlaneIntersectionPoints(plane: PlaneAltitudeEvaluator, result: CurveLocationDetail[]): number Parameter Type Description plane PlaneAltitudeEvaluator A plane (e.g. specific type Plane3dByOriginAndUnitNormal or Point4d) result CurveLocationDetail[] growing array of plane intersections Returns - number number of intersections appended to the array. Defined in core/geometry/src/bspline/BSplineCurve.ts Line 241 Last Updated: 13 June, 2024