ROTQRVEC applies a quaternion rotation ot a vector array y=[q,x] Inputs: q(4,1) quaternion rotation (possibly unnormalized) x(3n,...) array of 3D column vectors Outputs: y(3n,...) array of 3D column vectors

- rotqr2ro ROTQR2RO converts a real quaternion to a 3x3 rotation matrix

0001 function y=rotqrvec(q,x) 0002 %ROTQRVEC applies a quaternion rotation ot a vector array y=[q,x] 0003 % 0004 % Inputs: q(4,1) quaternion rotation (possibly unnormalized) 0005 % x(3n,...) array of 3D column vectors 0006 % 0007 % Outputs: y(3n,...) array of 3D column vectors 0008 0009 % Copyright (C) Mike Brookes 2011-2012 0010 % Version: $Id: rotqrvec.m 1640 2012-03-16 07:43:08Z dmb $ 0011 % 0012 % VOICEBOX is a MATLAB toolbox for speech processing. 0013 % Home page: http://www.ee.ic.ac.uk/hp/staff/dmb/voicebox/voicebox.html 0014 % 0015 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 0016 % This program is free software; you can redistribute it and/or modify 0017 % it under the terms of the GNU General Public License as published by 0018 % the Free Software Foundation; either version 2 of the License, or 0019 % (at your option) any later version. 0020 % 0021 % This program is distributed in the hope that it will be useful, 0022 % but WITHOUT ANY WARRANTY; without even the implied warranty of 0023 % MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 0024 % GNU General Public License for more details. 0025 % 0026 % You can obtain a copy of the GNU General Public License from 0027 % http://www.gnu.org/copyleft/gpl.html or by writing to 0028 % Free Software Foundation, Inc.,675 Mass Ave, Cambridge, MA 02139, USA. 0029 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 0030 s=size(x); 0031 y=reshape(rotqr2ro(q)*reshape(x,3,[]),s);

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