/usr/share/octave/packages/geometry-1.7.0/geom3d/drawPolygon3d.m is in octave-geometry 1.7.0-1build1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 | ## Copyright (C) 2004-2011 David Legland <david.legland@grignon.inra.fr>
## 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
## notice, this list of conditions and the following disclaimer in the
## documentation and/or other materials provided with the distribution.
##
## THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ''AS IS''
## AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
## IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
## ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
## ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
## DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
## SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
## CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
## OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
## OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
## -*- texinfo -*-
## @deftypefn {Function File} {@var{h} =} drawPolygon3d (@var{poly})
## @deftypefnx {Function File} {@var{h} =} drawPolygon3d (@var{px},@var{py},@var{pz})
## @deftypefnx {Function File} {@var{h} =} drawPolygon3d (@dots{},@var{param},@var{value})
## Draw a 3D polygon specified by a list of vertices
##
## drawPolygon3d(POLY);
## packs coordinates in a single N-by-3 array.
##
## drawPolygon3d(PX, PY, PZ);
## specifies coordinates in separate arrays.
##
## drawPolygon3d(..., PARAM, VALUE);
## Specifies style options to draw the polyline, see plot for details.
##
## H = drawPolygon3d(...);
## also return a handle to the list of line objects.
##
## @seealso{polygons3d, fillPolygon3d, drawPolyline3d}
## @end deftypefn
function varargout = drawPolygon3d(varargin)
# check case we want to draw several curves, stored in a cell array
var = varargin{1};
if iscell(var)
hold on;
h = [];
for i = 1:length(var(:))
h = [h; drawPolygon3d(var{i}, varargin{2:end})]; ##ok<AGROW>
end
if nargout > 0
varargout{1} = h;
end
return;
end
# extract curve coordinate
if size(var, 2) == 1
# first argument contains x coord, second argument contains y coord
# and third one the z coord
px = var;
if length(varargin) < 3
error('Wrong number of arguments in drawPolygon3d');
end
py = varargin{2};
pz = varargin{3};
varargin = varargin(4:end);
else
# first argument contains both coordinate
px = var(:, 1);
py = var(:, 2);
pz = var(:, 3);
varargin = varargin(2:end);
end
## draw the polygon
# check that the polygon is closed
if px(1) ~= px(end) || py(1) ~= py(end) || pz(1) ~= pz(end)
px = [px; px(1)];
py = [py; py(1)];
pz = [pz; pz(1)];
end
# draw the closed curve
h = plot3(px, py, pz, varargin{:});
if nargout > 0
varargout = {h};
end
endfunction
%!demo
%! l=0.25;
%! # Corner Triangle with a wedge
%! poly2 = [1 0 0; ...
%! ([1 0 0]+l*[-1 1 0]); ...
%! mean(eye(3)); ...
%! ([1 0 0]+(1-l)*[-1 1 0]); ...
%! 0 1 0; ...
%! 0 0 1];
%! drawPolygon3d(poly2)
%! axis square
%! axis equal
%! view([74 26])
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