--- /dev/null
+%% Copyright (c) 2011, INRA
+%% 2004-2011, David Legland <david.legland@grignon.inra.fr>
+%% 2011 Adapted to Octave by Juan Pablo Carbajal <carbajal@ifi.uzh.ch>
+%%
+%% All rights reserved.
+%% (simplified BSD License)
+%%
+%% 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 COPYRIGHT HOLDER 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 copyright holder.
+
+%% -*- texinfo -*-
+%% @deftypefn {Function File} {@var{h} =} drawLine (@var{line})
+%% @deftypefnx {Function File} {@var{h} =} drawLine (@var{line}, @var{param},@var{value})
+%% Draw the line on the current axis.
+%%
+%% Draws the line LINE on the current axis, by using current axis to clip
+%% the line. Extra @var{param},@var{value} pairs are passed to the @code{line} function.
+%% Returns a handle to the created line object. If clipped line is not
+%% contained in the axis, the function returns -1.
+%%
+%% Example
+%%
+%% @example
+%% figure; hold on; axis equal;
+%% axis([0 100 0 100]);
+%% drawLine([30 40 10 20]);
+%% drawLine([30 40 20 -10], 'color', 'm', 'linewidth', 2);
+%% @end example
+%%
+%% @seealso{lines2d, createLine, drawEdge}
+%% @end deftypefn
+
+function varargout = drawLine(lin, varargin)
+
+ % default style for drawing lines
+ varargin = [{'color', 'b'}, varargin];
+
+ % extract bounding box of the current axis
+ xlim = get(gca, 'xlim');
+ ylim = get(gca, 'ylim');
+
+ % clip lines with current axis box
+ clip = clipLine(lin, [xlim ylim]);
+ ok = isfinite(clip(:,1));
+
+ % initialize result array to invalide handles
+ h = -1*ones(size(lin, 1), 1);
+
+ % draw valid lines
+ h(ok) = line(clip(ok, [1 3])', clip(ok, [2 4])', varargin{:});
+
+ % return line handle if needed
+ if nargout>0
+ varargout{1}=h;
+ end
+
+endfunction
+
+%!demo
+%! figure; hold on; axis equal;
+%! axis([0 100 0 100]);
+%! drawLine([30 40 10 20]);
+%! drawLine([30 40 20 -10], 'color', 'm', 'linewidth', 2);
+
+%!shared privpath
+%! privpath = [fileparts(which('geom2d_Contents')) filesep() 'private'];
+
+%!test
+%! addpath (privpath,'-end')
+%! box = [0 100 0 100];
+%! hf = figure('visible','off');
+%! axis(box);
+%! line = [30 40 10 0];
+%! edge = [0 40 100 40];
+%! hl = drawLine(line);
+%! assertElementsAlmostEqual(edge([1 3]), get(hl, 'xdata'));
+%! assertElementsAlmostEqual(edge([2 4]), get(hl, 'ydata'));
+%! rmpath (privpath);
+
+%!test
+%! addpath (privpath,'-end')
+%! box = [0 100 0 100];
+%! hf = figure('visible','off');
+%! axis(box);
+%! line = [30 40 -10 0];
+%! edge = [100 40 0 40];
+%! hl = drawLine(line);
+%! assertElementsAlmostEqual(edge([1 3]), get(hl, 'xdata'));
+%! assertElementsAlmostEqual(edge([2 4]), get(hl, 'ydata'));
+%! rmpath (privpath);
+
+%!test
+%! addpath (privpath,'-end')
+%! box = [0 100 0 100];
+%! hf = figure('visible','off');
+%! axis(box);
+%! line = [30 140 10 0];
+%! hl = drawLine(line);
+%! assertEqual(-1, hl);
+%! rmpath (privpath);
+
+%!test
+%! addpath (privpath,'-end')
+%! box = [0 100 0 100];
+%! hf = figure('visible','off');
+%! axis(box);
+%! line = [30 40 0 10];
+%! edge = [30 0 30 100];
+%! hl = drawLine(line);
+%! assertElementsAlmostEqual(edge([1 3]), get(hl, 'xdata'));
+%! assertElementsAlmostEqual(edge([2 4]), get(hl, 'ydata'));
+%! rmpath (privpath);
+
+%!test
+%! addpath (privpath,'-end')
+%! box = [0 100 0 100];
+%! hf = figure('visible','off');
+%! axis(box);
+%! line = [30 40 0 -10];
+%! edge = [30 100 30 0];
+%! hl = drawLine(line);
+%! assertElementsAlmostEqual(edge([1 3]), get(hl, 'xdata'));
+%! assertElementsAlmostEqual(edge([2 4]), get(hl, 'ydata'));
+%! rmpath (privpath);
+
+%!test
+%! addpath (privpath,'-end')
+%! box = [0 100 0 100];
+%! hf = figure('visible','off');
+%! axis(box);
+%! line = [140 30 0 10];
+%! hl = drawLine(line);
+%! assertEqual(-1, hl);
+%! rmpath (privpath);
+
+%!test
+%! addpath (privpath,'-end')
+%! box = [0 100 0 100];
+%! hf = figure('visible','off');
+%! axis(box);
+%! line = [80 30 10 10];
+%! edge = [50 0 100 50];
+%! hl = drawLine(line);
+%! assertElementsAlmostEqual(edge([1 3]), get(hl, 'xdata'));
+%! assertElementsAlmostEqual(edge([2 4]), get(hl, 'ydata'));
+%! rmpath (privpath);
+
+%!test
+%! addpath (privpath,'-end')
+%! box = [0 100 0 100];
+%! hf = figure('visible','off');
+%! axis(box);
+%! line = [20 70 10 10];
+%! edge = [0 50 50 100];
+%! hl = drawLine(line);
+%! assertElementsAlmostEqual(edge([1 3]), get(hl, 'xdata'));
+%! assertElementsAlmostEqual(edge([2 4]), get(hl, 'ydata'));
+%! rmpath (privpath);
+
+%!test
+%! addpath (privpath,'-end')
+%! box = [0 100 0 100];
+%! hf = figure('visible','off');
+%! axis(box);
+%! line = [140 -30 10 10];
+%! hl = drawLine(line);
+%! assertEqual(-1, hl);
+%! line = [-40 130 10 10];
+%! hl = drawLine(line);
+%! assertEqual(-1, hl);
+%! rmpath (privpath);
+
+%!test
+%! addpath (privpath,'-end')
+%! box = [0 100 0 100];
+%! hf = figure('visible','off');
+%! axis(box);
+%! line = [...
+%! 80 30 10 10; ...
+%! 20 70 10 10; ...
+%! 140 -30 10 10; ...
+%! -40 130 10 10];
+%! edge = [...
+%! 50 0 100 50; ...
+%! 0 50 50 100];
+%! hl = drawLine(line);
+%! assertEqual(4, length(hl));
+%! assertElementsAlmostEqual(edge(1, [1 3]), get(hl(1), 'xdata'));
+%! assertElementsAlmostEqual(edge(1, [2 4]), get(hl(1), 'ydata'));
+%! assertElementsAlmostEqual(edge(2, [1 3]), get(hl(2), 'xdata'));
+%! assertElementsAlmostEqual(edge(2, [2 4]), get(hl(2), 'ydata'));
+%! assertEqual(-1, hl(3));
+%! assertEqual(-1, hl(4));
+%! rmpath (privpath);
+
git://git.creatis.insa-lyon.fr / CreaPhase.git / blobdiff