File: isPointOnPolyline.m

package info (click to toggle)
octave-matgeom 1.2.4-2
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid, trixie
  • size: 3,584 kB
  • sloc: objc: 469; makefile: 10
file content (64 lines) | stat: -rw-r--r-- 2,642 bytes parent folder | download
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
## 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
## ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
## 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,
## OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
## 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;