def is_point_on_polyline(point, polyline, tol=0.0):
"""Determine if a point is on a polyline.
Parameters
----------
point : sequence of float
XYZ coordinates.
polyline : sequence of sequence of float
XYZ coordinates of the points of the polyline.
tol : float, optional
The tolerance.
Default is ``0.0``.
Returns
-------
bool
``True`` if the point is on the polyline.
``False`` otherwise.
"""
for i in range(len(polyline) - 1):
a = polyline[i]
b = polyline[i + 1]
c = closest_point_on_segment(point, (a, b))
if distance_point_point(point, c) <= tol:
return True
return False
def get_distance(self, point):
"""
single point distance function
"""
if not isinstance(point, Point):
point = Point(*point)
p = closest_point_on_segment(point, self.segment)
return point.distance_to_point(p) - self.radius