source:
proiecte/pmake3d/make3d_original/Make3dSingleImageStanford_version0.1/third_party/qtfm/@quaternion/uminus.m
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1 | function u = uminus(a) |
2 | % - Unary minus. |
3 | % (Quaternion overloading of standard Matlab function.) |
4 | |
5 | % Copyright © 2005 Stephen J. Sangwine and Nicolas Le Bihan. |
6 | % See the file : Copyright.m for further details. |
7 | |
8 | error(nargchk(1, 1, nargin)), error(nargoutchk(0, 1, nargout)) |
9 | |
10 | if ispure(a) |
11 | u = quaternion( -x(a), -y(a), -z(a)); |
12 | else |
13 | u = quaternion(-s(a), -x(a), -y(a), -z(a)); |
14 | end |
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