1 %% Copyright (c) 2011, INRA
2 %% 2010-2011, 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{box} =} intersectBoxes (@var{box1}, @var{box2})
36 %% Intersection of two bounding boxes.
41 %% box1 = [5 20 5 30];
42 %% box2 = [0 15 0 15];
43 %% intersectBoxes(box1, box2)
48 %% @seealso{boxes2d, drawBox, mergeBoxes}
51 function bb = intersectBoxes(box1, box2)
55 box1 = repmat(box1, size(box2,1), 1);
56 elseif size(box2, 1) == 1
57 box2 = repmat(box2, size(box1,1), 1);
58 elseif size(box1,1) != size(box2,1)
59 error('geom2d:Error',"Bad size for inputs.\n");
62 % compute extreme coords
63 mini = min(box1(:,[2 4]), box2(:,[2 4]));
64 maxi = max(box1(:,[1 3]), box2(:,[1 3]));
66 % concatenate result into a new box structure
67 bb = [maxi(:,1) mini(:,1) maxi(:,2) mini(:,2)];
72 %! box1 = [5 20 10 25];
73 %! box2 = [0 15 15 20];
74 %! res = [5 15 15 20];
75 %! bb = intersectBoxes(box1, box2);
76 %! assert (res, bb, 1e-6);