1 %% Copyright (c) 2011, INRA
2 %% 2005-2011, 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{h} = } drawPolygon (@var{coord})
36 %% @deftypefnx {Function File} {@var{h} = } drawPolygon (@var{px}, @var{py})
37 %% @deftypefnx {Function File} {@var{h} = } drawPolygon (@var{polys})
38 %% Draw a polygon specified by a list of points.
40 %% drawPolygon(COORD);
41 %% Packs coordinates in a single [N*2] array.
43 %% drawPolygon(PX, PY);
44 %% Specifies coordinates in separate arrays.
47 %% Packs coordinate of several polygons in a cell array. Each element of
48 %% the array is a Ni*2 double array.
50 %% H = drawPolygon(...);
51 %% Also return a handle to the list of line objects.
54 %% @seealso{polygons2d, drawCurve}
57 function varargout = drawPolygon(varargin)
61 error('need to specify a polygon');
66 %% Manage cell arrays of polygons
68 % case of a set of polygons stored in a cell array
75 % check for empty polygons
77 h(i) = drawPolygon(var{i}, varargin{2:end});
92 %% Parse coordinates and options
94 % Extract coordinates of polygon vertices
96 % first argument is a polygon array
101 % arguments 1 and 2 correspond to x and y coordinate respectively
102 if length(varargin) < 2
103 error('Should specify either a N-by-2 array, or 2 N-by-1 vectors');
111 % set default line format
116 % check case of polygons with holes
117 if sum(isnan(px(:))) > 0
118 polygons = splitPolygons([px py]);
119 h = drawPolygon(polygons);
131 % ensure last point is the same as the first one
132 px(size(px, 1)+1, :) = px(1,:);
133 py(size(py, 1)+1, :) = py(1,:);
135 % draw the polygon outline
136 h = plot(px, py, varargin{:});