X-Git-Url: https://git.creatis.insa-lyon.fr/pubgit/?p=CreaPhase.git;a=blobdiff_plain;f=octave_packages%2Fgeometry-1.5.0%2Fgeom2d%2FcreateEdge.m;fp=octave_packages%2Fgeometry-1.5.0%2Fgeom2d%2FcreateEdge.m;h=eb0aa51b09dc28c9f576b6b2dc8dbb55d1f38e95;hp=0000000000000000000000000000000000000000;hb=f5f7a74bd8a4900f0b797da6783be80e11a68d86;hpb=1705066eceaaea976f010f669ce8e972f3734b05 diff --git a/octave_packages/geometry-1.5.0/geom2d/createEdge.m b/octave_packages/geometry-1.5.0/geom2d/createEdge.m new file mode 100644 index 0000000..eb0aa51 --- /dev/null +++ b/octave_packages/geometry-1.5.0/geom2d/createEdge.m @@ -0,0 +1,121 @@ +%% Copyright (c) 2011, INRA +%% 2003-2011, David Legland +%% 2011 Adapted to Octave by Juan Pablo Carbajal +%% +%% 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{edge} = } createEdge (@var{p1}, @var{p2}) +%% @deftypefnx {Function File} {@var{edge} = } createEdge (@var{x0}, @var{y0}, @var{dx}, @var{dy}) +%% @deftypefnx {Function File} {@var{edge} = } createEdge (@var{param}) +%% @deftypefnx {Function File} {@var{edge} = } createEdge (@var{line}, @var{d}) +%% Create an edge between two points, or from a line. +%% +%% The internal format for edge representation is given by coordinates of +%% two points : [x1 y1 x2 y2]. +%% This function can serve as a line to edge converter. +%% +%% +%% Returns the edge between the two given points @var{p1} and @var{p2}. +%% +%% Returns the edge going through point (@var{x0}, @var{y0}) and with direction +%% vector (@var{dx},@var{dy}). +%% +%% When @var{param} is an array of 4 values, creates the edge going through the +%% point (param(1) param(2)), and with direction vector given by +%% (param(3) param(4)). +%% +%% When @var{line} is given, creates the edge contained in @var{line}, with same +%% direction and start point, but with length given by @var{d}. +%% +%% +%% Note: in all cases, parameters can be vertical arrays of the same +%% dimension. The result is then an array of edges, of dimensions [N*4]. +%% +%% @seealso{edges2d, lines2d, drawEdge, clipEdge} +%% @end deftypefn + +function edge = createEdge(varargin) + + if length(varargin)==1 + % Only one input parameter. It can be : + % - line angle + % - array of four parameters + % TODO : add control for arrays of lines. + var = varargin{1}; + + if size(var, 2)==4 + % 4 parameters of the line in a single array. + %edge = var; + edge = zeros(size(var)); + edge(:, 1:2) = var(:,1:2); + edge(:, 3:4) = edge(:, 1:2)+var(:,3:4); + elseif size(var, 2)==1 + % 1 parameter : angle of the line, going through origin. + edge = [zeros(size(var,1)) zeros(size(var,1)) cos(var) sin(var)]; + else + error('wrong number of dimension for arg1 : can be 1 or 4'); + end + + elseif length(varargin)==2 + % 2 input parameters. They can be : + % - 2 points, then 2 arrays of 1*2 double, + % - a line, and a distance. + v1 = varargin{1}; + v2 = varargin{2}; + if size(v1, 2)==2 + % first input parameter is first point, and second input is the + % second point. + %edge = [v1(:,1), v1(:,2), v2(:,1), v2(:,2)]; + edge = [v1 v2]; + else + % first input parameter is a line, and second one a distance. + angle = atan2(v1(:,4), v1(:,3)); + edge = [v1(:,1), v1(:,2), v1(:,1)+v2.*cos(angle), v1(:,2)+v2.*sin(angle)]; + end + + elseif length(varargin)==3 + % 3 input parameters : + % first one is a point belonging to the line, + % second and third ones are direction vector of the line (dx and dy). + p = varargin{1}; + edge = [p(:,1) p(:,2) p(:,1)+varargin{2} p(:,2)+varargin{3}]; + + elseif length(varargin)==4 + % 4 input parameters : + % they are x0, y0 (point belonging to line) and dx, dy (direction + % vector of the line). + % All parameters should have the same size. + edge = [varargin{1} varargin{2} varargin{1}+varargin{3} varargin{2}+varargin{4}]; + else + error('Wrong number of arguments in ''createLine'' '); + end + +endfunction