/usr/share/octave/packages/geometry-1.7.0/geom2d/drawLine.m is in octave-geometry 1.7.0-1build1.
This file is owned by root:root, with mode 0o644.
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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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 | ## 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} =} 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);
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