/usr/share/octave/packages/geometry-1.7.0/geom3d/drawBox3d.m is in octave-geometry 1.7.0-1build1.
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## Copyright (C) 2004-2011 INRA - CEPIA Nantes - MIAJ (Jouy-en-Josas)
## Copyright (C) 2012 Adapted to Octave by Juan Pablo Carbajal <carbajal@ifi.uzh.ch>
## 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
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## THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ''AS IS''
## AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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## -*- texinfo -*-
## @deftypefn {Function File} drawBox3d (@var{box})
## @deftypefnx {Function File} drawBox3d (@dots{},@var{opt})
## Draw a 3D box defined by coordinate extents
##
## Draw a box defined by its coordinate extents:
## BOX = [XMIN XMAX YMIN YMAX ZMIN ZMAX].
## The function draws only the outline edges of the box.
## Extra options @var{opt} are passed to the function @code{drawEdges3d}.
##
## Example
## @example
## # Draw bounding box of a cubeoctehedron
## [v e f] = createCubeOctahedron;
## box3d = boundingBox3d(v);
## figure; hold on;
## drawMesh(v, f);
## drawBox3d(box3d);
## axis([-2 2 -2 2 -2 2]);
## view(3)
## @end example
##
## @seealso{boxes3d, boundingBox3d}
## @end deftypefn
function drawBox3d(box, varargin)
# default values
xmin = box(:,1);
xmax = box(:,2);
ymin = box(:,3);
ymax = box(:,4);
zmin = box(:,5);
zmax = box(:,6);
nBoxes = size(box, 1);
for i=1:length(nBoxes)
# lower face (z=zmin)
drawEdge3d([xmin(i) ymin(i) zmin(i) xmax(i) ymin(i) zmin(i)], varargin{:});
drawEdge3d([xmin(i) ymin(i) zmin(i) xmin(i) ymax(i) zmin(i)], varargin{:});
drawEdge3d([xmax(i) ymin(i) zmin(i) xmax(i) ymax(i) zmin(i)], varargin{:});
drawEdge3d([xmin(i) ymax(i) zmin(i) xmax(i) ymax(i) zmin(i)], varargin{:});
# front face (y=ymin)
drawEdge3d([xmin(i) ymin(i) zmin(i) xmin(i) ymin(i) zmax(i)], varargin{:});
drawEdge3d([xmax(i) ymin(i) zmin(i) xmax(i) ymin(i) zmax(i)], varargin{:});
drawEdge3d([xmin(i) ymin(i) zmax(i) xmax(i) ymin(i) zmax(i)], varargin{:});
# left face (x=xmin)
drawEdge3d([xmin(i) ymax(i) zmin(i) xmin(i) ymax(i) zmax(i)], varargin{:});
drawEdge3d([xmin(i) ymin(i) zmax(i) xmin(i) ymax(i) zmax(i)], varargin{:});
# the last 3 remaining edges
drawEdge3d([xmin(i) ymax(i) zmax(i) xmax(i) ymax(i) zmax(i)], varargin{:});
drawEdge3d([xmax(i) ymax(i) zmin(i) xmax(i) ymax(i) zmax(i)], varargin{:});
drawEdge3d([xmax(i) ymin(i) zmax(i) xmax(i) ymax(i) zmax(i)], varargin{:});
end
endfunction
%!demo
%! close all
%! graphics_toolkit("fltk")
%! # Draw bounding box of a cubeoctehedron
%! [v e f] = createCubeOctahedron;
%! box3d = boundingBox3d(v);
%! figure;
%! hold on;
%! drawMesh(v, f);
%! drawBox3d(box3d);
%! axis([-2 2 -2 2 -2 2]);
%! view(3)
%!demo
%! close all
%! graphics_toolkit("gnuplot")
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