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
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
|
## 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 edge = createEdge3d(varargin)
%CREATEEDGE3D Create an edge between two 3D points, or from a 3D line.
%
% E = createEdge3d(P1, P2)
% Creates the 3D edge joining the two points P1 and P2.
%
% E = createEdge3d(LIN)
% Creates the 3D edge with same origin and same direction vector as the
% 3D line LIN.
%
% Example
% p1 = [1 1 1];
% p2 = [3 4 5];
% edge = createEdge3d(p1, p2);
% edgeLength3d(edge)
% ans =
% 5.3852
%
% See also
% edges3d, drawEdge3d, clipEdge3d, edgelength3d
% ------
% Author: David Legland
% E-mail: david.legland@inrae.fr
% Created: 2018-08-29, using Matlab 9.4.0.813654 (R2018a)
% Copyright 2018-2023 INRA - Cepia Software Platform
if nargin == 1
% Only one input parameter. Assumes it corresponds to a 3D line with
% 6 params.
var = varargin{1};
if size(var, 2) ~= 6
error('single input must have 6 columns');
end
% converts 3D line into 3D edge
edge = zeros(size(var));
edge(:, 1:3) = var(:, 1:3);
edge(:, 4:6) = edge(:, 1:3) + var(:,4:6);
elseif nargin == 2
% 2 input parameters correspond to two 3D points
% extract the two arguments
v1 = varargin{1};
v2 = varargin{2};
if size(v1, 2) ~= 3 || size(v2, 2) ~= 3
error('Input points must be arrays with 3 columns');
end
% first input parameter is first point, and second input is the
% second point. Allows multiple points.
n1 = size(v1, 1);
n2 = size(v2, 1);
if n1 == n2
edge = [v1 v2];
elseif n1 == 1 || n2 == 1
edge = [repmat(v1, n2, 1) repmat(v2, n1, 1)];
end
else
error('Wrong number of arguments in ''%s''', mfilename);
end
|
