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
65
66
67
|
## 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 theta = angle2Points(varargin)
%ANGLE2POINTS Compute horizontal angle between 2 points.
%
% ALPHA = angle2Points(P1, P2),
% Pi are either [1*2] arrays, or [N*2] arrays, in this case ALPHA is a
% [N*1] array. The angle computed is the horizontal angle of the line
% (P1 P2)
% Result is always given in radians, between 0 and 2*pi.
%
% See also
% points2d, angles2d, angle3points, normalizeAngle, vectorAngle
%
% ------
% Author: David Legland
% E-mail: david.legland@inrae.fr
% Created: 2007-03-02
% Copyright 2007-2023 INRA - Cepia Software Platform
% process input arguments
if length(varargin)==2
p1 = varargin{1};
p2 = varargin{2};
elseif length(varargin)==1
var = varargin{1};
p1 = var(1,:);
p2 = var(2,:);
end
% ensure data have correct size
n1 = size(p1, 1);
n2 = size(p2, 1);
if n1~=n2 && min(n1, n2)>1
error('angle2Points: wrong size for inputs');
end
% angle of line (P2 P1), between 0 and 2*pi.
dp = bsxfun(@minus, p2, p1);
theta = mod(atan2(dp(:,2), dp(:,1)) + 2*pi, 2*pi);
|
