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
93
94
95
96
97
98
99
100
101
102
103
|
## 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 varargout = removeDuplicateVertices(v,varargin)
%REMOVEDUPLICATEVERTICES Remove duplicate vertices of a mesh.
%
% [V2, F2] = removeDuplicateVertices(V, F)
% Remove duplicate vertices of a mesh defined by the vertices V and
% faces F.
%
% [V2, F2] = removeDuplicateVertices(V, F, TOL)
% Remove duplicate vertices with the tolerance TOL:
% TOL = 0 -> Exact match
% TOL = 1e-1 -> Match up to first decimal
% TOL = 1 -> Integer match
%
% [VIDX, FIDX] = removeDuplicateVertices(V, F, TOL, 'indexOutput', true)
% Gives the indices instead of the final mesh. This means:
% V2 = V(VIDX,:)
% F2 = FIDX(F)
% V = V2(FIDX,:)
%
% Example
% v = [6-1e-6,0,-5;4,2,-2*pi;0,2,-7;6,0,-5;3,1,-9;0,2,-7;...
% 6,0,-5+1e-6;4,2,-2*pi;3,1,-9;4,2,-2*pi;6,4,-6;3,1,-9;...
% 4,2,-2*pi;0,2,-7;6,4,-6;6,4,-6;0,2,-7;3,1,-9];
% f = reshape(1:18,3,6)';
% [v, f] = removeDuplicateVertices(v, f);
%
% See also
% trimMesh, removeDuplicateFaces, removeUnreferencedVertices
%
% Source
% patchslim.m by Francis Esmonde-White:
% https://mathworks.com/matlabcentral/fileexchange/29986
% remove_duplicate_vertices.m by Alec Jacobson:
% https://github.com/alecjacobson/gptoolbox
% ------
% Author: oqilipo
% E-mail: N/A
% Created: 2023-05-14, using Matlab 9.13.0.2080170 (R2022b) Update 1
% Copyright 2023
%% Parse input
if isstruct(v)
[v, f] = parseMeshData(v);
else
f = varargin{1};
varargin(1) = [];
end
parser = inputParser;
logParValidFunc = @(x) (islogical(x) || isequal(x,1) || isequal(x,0));
addOptional(parser, 'tol', 0, @(x) validateattributes(x, {'numeric'}, {'scalar', '>=',0, '<=',1}));
addParameter(parser, 'indexOutput', false, logParValidFunc);
parse(parser, varargin{:});
tol = parser.Results.tol;
indexOutput = parser.Results.indexOutput;
%% Remove duplicate vertices
if tol == 0
[~, vIdx, fIdx] = unique(v,'rows','stable');
else
[~, vIdx, fIdx] = unique(round(v/(tol)),'rows','stable');
end
%% Parse output
if indexOutput
% If indices are requested
varargout = {vIdx, fIdx};
else
% Output is the final mesh
v2 = v(vIdx,:);
f2 = fIdx(f);
varargout = formatMeshOutput(nargout, v2, f2);
end
end
|
