API Reference > geometry-core > Numerics > SmallSystem > lineSegment3dHXYTransverseIntersectionUnbounded lineSegment3dHXYTransverseIntersectionUnbounded MethodStatic Return true if lines (a0,a1) to (b0, b1) have a simple intersection using only xy parts of WEIGHTED 4D Points Return the fractional (not xy) coordinates in result.x, result.y lineSegment3dHXYTransverseIntersectionUnbounded(hA0: Point4d, hA1: Point4d, hB0: Point4d, hB1: Point4d, result?: Vector2d): Vector2d | undefined Parameter Type Description hA0 Point4d homogeneous start point of line a hA1 Point4d homogeneous end point of line a hB0 Point4d homogeneous start point of line b hB1 Point4d homogeneous 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 - Vector2d | undefined Defined in core/geometry/src/numerics/Polynomials.ts Line 1436 Last Updated: 13 June, 2024