API Reference > geometry-core > Numerics > SmallSystem > lineSegment3dClosestApproachUnbounded lineSegment3dClosestApproachUnbounded MethodStatic Return true if lines (a0,a1) to (b0, b1) have closest approach (go by each other) in 3d Return the fractional (not xy) coordinates in result.x, result.y lineSegment3dClosestApproachUnbounded(a0: Point3d, a1: Point3d, b0: Point3d, b1: Point3d, result: Vector2d): boolean Parameter Type Description a0 Point3d start point of line a a1 Point3d end point of line a b0 Point3d start point of line b b1 Point3d end point of line b result Vector2d point to receive fractional coordinates of intersection. result.x is fraction on line a. result.y is fraction on line b. Returns - boolean Defined in core/geometry/src/numerics/Polynomials.ts Line 1535 Last Updated: 13 June, 2024