1 %% Copyright (c) 2011, INRA
2 %% 2007-2011, David Legland <david.legland@grignon.inra.fr>
3 %% 2011 Adapted to Octave by Juan Pablo Carbajal <carbajal@ifi.uzh.ch>
5 %% All rights reserved.
6 %% (simplified BSD License)
8 %% Redistribution and use in source and binary forms, with or without
9 %% modification, are permitted provided that the following conditions are met:
11 %% 1. Redistributions of source code must retain the above copyright notice, this
12 %% list of conditions and the following disclaimer.
14 %% 2. Redistributions in binary form must reproduce the above copyright notice,
15 %% this list of conditions and the following disclaimer in the documentation
16 %% and/or other materials provided with the distribution.
18 %% THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
19 %% AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 %% IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 %% ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
22 %% LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
23 %% CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
24 %% SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
25 %% INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
26 %% CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
27 %% ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
28 %% POSSIBILITY OF SUCH DAMAGE.
30 %% The views and conclusions contained in the software and documentation are
31 %% those of the authors and should not be interpreted as representing official
32 %% policies, either expressed or implied, of copyright holder.
35 %% @deftypefn {Function File} {@var{vr} = } rotateVector (@var{v}, @var{theta})
36 %% Rotate a vector by a given angle
38 %% Rotate the vector @var{v} by an angle @var{theta}, given in radians.
43 %% rotateVector([1 0], pi/2)
48 %% @seealso{vectors2d, transformVector, createRotation}
51 function vr = rotateVector(v, angle)
57 % compute rotated coordinates
58 vr = [cot * v(:,1) - sit * v(:,2) , sit * v(:,1) + cot * v(:,2)];
62 %!assert ([0 1],rotateVector([1 0],pi/2), 1e-6)
63 %!assert (sqrt([0.5 0.5]),rotateVector([1 0],pi/4), 1e-6)