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## Copyright (C) 2024 David Legland
## 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.
##
## The views and conclusions contained in the software and documentation are
## those of the authors and should not be interpreted as representing official
## policies, either expressed or implied, of the copyright holders.
function writePolygonSet(polys, filename)
%WRITEPOLYGONSET Write a set of simple polygons into a file.
%
% writePolygonSet(POLYS, FILENAME);
% Writes the set of polygons in the file FILENAME.
% Following format is used:
% X11 X12 X13 ... X1N
% Y11 Y12 Y13 ... Y1N
% X21 X22 X23 ... X2N
% Y21 Y22 Y23 ... Y2N
% Each polygon may have a different number of vertices.
%
% See also
% polygons2d, readPolygonSet
% ------
% Author: David Legland
% E-mail: david.legland@inrae.fr
% Created: 2013-01-14
% Copyright 2013-2023 INRA - TPV URPOI - BIA IMASTE
% open file for reading
fid = fopen(filename, 'wt');
for i = 1:length(polys)
poly = polys{i};
n = size(poly, 1);
% precompute format
format = [repmat('%g ', 1, n) '\n'];
% write one line for x, then one line for y
fprintf(fid, format, poly(:,1)');
fprintf(fid, format, poly(:,2)');
end
% close file
fclose(fid);
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