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## Copyright (C) 2024 David Legland
## All rights reserved.
##
## Redistribution and use in source and binary forms, with or without
## modification, are permitted provided that the following conditions are met:
##
## 1 Redistributions of source code must retain the above copyright notice,
## this list of conditions and the following disclaimer.
## 2 Redistributions in binary form must reproduce the above copyright
## notice, this list of conditions and the following disclaimer in the
## documentation and/or other materials provided with the distribution.
##
## THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ''AS IS''
## AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
## IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
## ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
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## DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
## SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
## CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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## OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
##
## The views and conclusions contained in the software and documentation are
## those of the authors and should not be interpreted as representing official
## policies, either expressed or implied, of the copyright holders.
function res = isPointOnPolyline(point, poly, varargin)
%ISPOINTONPOLYLINE Test if a point belongs to a polyline.
%
% B = isPointOnPolyline(POINT, POLY)
% Returns TRUE of the point POINT belong to the polyline defined by the
% set of points in POLY.
%
% B = isPointOnPolyline(POINT, POLY, TOL)
% Specify the absolute tolerance for testing the distance between the
% point and the polyline.
%
% Example
% pt1 = [30 20];
% pt2 = [30 10];
% poly = [10 10;50 10;50 50;10 50];
% isPointOnPolyline([pt1;pt2], poly)
% ans =
% 0
% 1
%
% See also
% points2d, polygons2d
% ------
% Author: David Legland
% E-mail: david.legland@inrae.fr
% Created: 2009-06-19, using Matlab 7.7.0.471 (R2008b)
% Copyright 2009-2023 INRA - Cepia Software Platform
% extract computation tolerance
tol = 1e-14;
if ~isempty(varargin)
tol = varargin{1};
end
% return true if distance is below a given threshold
res = distancePointPolyline(point, poly) < tol;
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