def intersection_segment_segment_xy(ab, cd, tol=1e-6):
"""Compute the intersection of two lines segments, assuming they lie in the XY plane.
Parameters
----------
ab : tuple
XY(Z) coordinates of two points defining a line segment.
cd : tuple
XY(Z) coordinates of two points defining another line segment.
tol : float, optional
A tolerance for membership verification.
Default is ``0.0``.
Returns
-------
None
If there is no intersection point.
list
XYZ coordinates of intersection point if one exists.
"""
intx_pt = intersection_line_line_xy(ab, cd)
if not intx_pt:
return None
if not is_point_on_segment_xy(intx_pt, ab, tol=tol):
return None
if not is_point_on_segment_xy(intx_pt, cd, tol=tol):
return None
return intx_pt
def intersection_line_segment_xy(line, segment, tol=1e-6):
""""""
x = intersection_line_line_xy(line, segment, tol=tol)
if not x:
return None
if is_point_on_segment_xy(x, segment, tol=tol):
return x