Thread: [Octave-cvsupdate] SF.net SVN: octave:[8606] trunk/octave-forge/main/geometry

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Revision: 8606
          http://octave.svn.sourceforge.net/octave/?rev=8606&view=rev
Author:   jpicarbajal
Date:     2011-09-26 21:01:25 +0000 (Mon, 26 Sep 2011)
Log Message:
-----------
First set of functions

Added Paths:
-----------
    trunk/octave-forge/main/geometry/COPYING
    trunk/octave-forge/main/geometry/DESCRIPTION
    trunk/octave-forge/main/geometry/INDEX
    trunk/octave-forge/main/geometry/inst/
    trunk/octave-forge/main/geometry/inst/data2geo.m
    trunk/octave-forge/main/geometry/inst/private/
    trunk/octave-forge/main/geometry/inst/private/SVGstrPath2SVGpath.m
    trunk/octave-forge/main/geometry/inst/private/formatSVGstr.m
    trunk/octave-forge/main/geometry/inst/private/getSVGdata.m
    trunk/octave-forge/main/geometry/inst/private/getSVGstrPath.m
    trunk/octave-forge/main/geometry/inst/private/lineGeo.m
    trunk/octave-forge/main/geometry/inst/private/lineLoopGeo.m
    trunk/octave-forge/main/geometry/inst/private/planeSurfGeo.m
    trunk/octave-forge/main/geometry/inst/private/pointGeo.m
    trunk/octave-forge/main/geometry/inst/private/ruledSurfGeo.m
    trunk/octave-forge/main/geometry/inst/svgload.m
    trunk/octave-forge/main/geometry/inst/svgnormalize.m
    trunk/octave-forge/main/geometry/inst/svgpath2polygon.m

Added: trunk/octave-forge/main/geometry/COPYING
===================================================================

--- trunk/octave-forge/main/geometry/COPYING	                        (rev 0)
+++ trunk/octave-forge/main/geometry/COPYING	2011-09-26 21:01:25 UTC (rev 8606)
@@ -0,0 +1,674 @@
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+but the special requirements of the GNU Affero General Public License,
+section 13, concerning interaction through a network will apply to the
+combination as such.
+
+  14. Revised Versions of this License.
+
+  The Free Software Foundation may publish revised and/or new versions of
+the GNU General Public License from time to time.  Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+  Each version is given a distinguishing version number.  If the
+Program specifies that a certain numbered version of the GNU General
+Public License "or any later version" applies to it, you have the
+option of following the terms and conditions either of that numbered
+version or of any later version published by the Free Software
+Foundation.  If the Program does not specify a version number of the
+GNU General Public License, you may choose any version ever published
+by the Free Software Foundation.
+
+  If the Program specifies that a proxy can decide which future
+versions of the GNU General Public License can be used, that proxy's
+public statement of acceptance of a version permanently authorizes you
+to choose that version for the Program.
+
+  Later license versions may give you additional or different
+permissions.  However, no additional obligations are imposed on any
+author or copyright holder as a result of your choosing to follow a
+later version.
+
+  15. Disclaimer of Warranty.
+
+  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<http://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<http://www.gnu.org/philosophy/why-not-lgpl.html>.

Added: trunk/octave-forge/main/geometry/DESCRIPTION
===================================================================
--- trunk/octave-forge/main/geometry/DESCRIPTION	                        (rev 0)
+++ trunk/octave-forge/main/geometry/DESCRIPTION	2011-09-26 21:01:25 UTC (rev 8606)
@@ -0,0 +1,11 @@
+Name: Geometry
+Version: 1.0.0
+Date: Thursday, September 22 2011
+Author: David Legland <dav...@gr...>, Juan Pablo Carbajal <car...@if...>
+Maintainer: Juan Pablo Carbajal <car...@if...>
+Title: Computational Geometry
+Description: Library for geometric computing extending MatGeom functions. Useful to create, transform, manipulate and display geometric primitives.
+Depends: octave (>= 3.4.0)
+Autoload: no
+License: GPL version 3 or later
+Url: http://octave.sf.net, http://matgeom.sf.net

Added: trunk/octave-forge/main/geometry/INDEX
===================================================================
--- trunk/octave-forge/main/geometry/INDEX	                        (rev 0)
+++ trunk/octave-forge/main/geometry/INDEX	2011-09-26 21:01:25 UTC (rev 8606)
@@ -0,0 +1,15 @@
+geometry >> Computational Geometry
+Input
+ svgload
+ svgnormalize
+ svgpath2polygon
+Output
+ data2geo
+2D Geometry
+
+3D Geometry
+
+Graphs
+
+
+

Added: trunk/octave-forge/main/geometry/inst/data2geo.m
===================================================================
--- trunk/octave-forge/main/geometry/inst/data2geo.m	                        (rev 0)
+++ trunk/octave-forge/main/geometry/inst/data2geo.m	2011-09-26 21:01:25 UTC (rev 8606)
@@ -0,0 +1,84 @@
+%% Copyright (c) 2010 Juan Pablo Carbajal <car...@if...>
+%% 
+%%    This program is free software: you can redistribute it and/or modify
+%%    it under the terms of the GNU General Public License as published by
+%%    the Free Software Foundation, either version 3 of the License, or
+%%    any later version.
+%%
+%%    This program is distributed in the hope that it will be useful,
+%%    but WITHOUT ANY WARRANTY; without even the implied warranty of
+%%    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+%%    GNU General Public License for more details.
+%%
+%%    You should have received a copy of the GNU General Public License
+%%    along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+%% -*- texinfo -*-
+%% @deftypefn {Function File} @var{fileStr} = data2geo (@var{data}, @var{lc},@{opt})
+%% Takes data assuming certain order and builds a .geo file compatible with gmsh.
+%%
+%% @end deftypefn
+
+function strFile = data2geo(data,lc,varargin)
+
+    nl = @()sprintf('\n');
+
+    %% Parse options
+    filegiven = [];
+    spherical = [];
+    if nargin > 2
+      filegiven = find(cellfun(@(x)strcmpi(x,'output'),varargin));
+      spherical = find(cellfun(@(x)strcmpi(x,'spherical'),varargin));
+    end
+
+    [n dim] = size(data);
+    if dim == 2
+        data(:,3) = zeros(n,1);
+    end
+
+    header = ' // File created with Octave';
+    strFile = [];
+    strFile = [strFile header nl()];
+
+    % Points
+    strFile = [strFile '// Points' nl()];
+
+    for i=1:n
+        strFile = [strFile pointGeo(i,data(i,:),lc)];
+    end
+
+    % Lines
+    strFile = [strFile '// Lines' nl()];
+    for i=1:n-1
+        strFile = [strFile lineGeo(i,i,i+1)];
+    end
+    strFile = [strFile lineGeo(n,n,1)];
+
+    % Loop
+    strFile = [strFile lineLoopGeo(n+1,n,1:n)];
+
+    % Surface
+    if spherical
+        sphr = varargin{spherical+1};
+        if dim ==2
+            sphr(1,3) = 0;
+        end
+        strFile = [strFile pointGeo(n+1,sphr,lc)];
+        strFile = [strFile ruledSurfGeo(n+3,1,n+1,n+1)];
+    else
+        strFile = [strFile planeSurfGeo(n+2,1,n+1)];
+    end
+
+    if filegiven
+        outfile = varargin{filegiven+1};
+        fid = fopen(outfile,'w');
+        fprintf(fid,'%s',strFile);
+        fclose(fid);
+        disp(['DATA2GEO: Geometry file saved to ' outfile])
+    end
+end
+
+%!demo
+%! points = [0 0 0; 0.1 0 0; 0.1 .3 0; 0 0.3 0];
+%! strFile = data2geo(points,0.009);
+%! disp(strFile)

Added: trunk/octave-forge/main/geometry/inst/private/SVGstrPath2SVGpath.m
===================================================================
--- trunk/octave-forge/main/geometry/inst/private/SVGstrPath2SVGpath.m	                        (rev 0)
+++ trunk/octave-forge/main/geometry/inst/private/SVGstrPath2SVGpath.m	2011-09-26 21:01:25 UTC (rev 8606)
@@ -0,0 +1,103 @@
+%% Copyright (c) 2011 Juan Pablo Carbajal <car...@if...>
+%% 
+%%    This program is free software: you can redistribute it and/or modify
+%%    it under the terms of the GNU General Public License as published by
+%%    the Free Software Foundation, either version 3 of the License, or
+%%    any later version.
+%%
+%%    This program is distributed in the hope that it will be useful,
+%%    but WITHOUT ANY WARRANTY; without even the implied warranty of
+%%    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+%%    GNU General Public License for more details.
+%%
+%%    You should have received a copy of the GNU General Public License
+%%    along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+function SVGpath = SVGstrPath2SVGpath (SVGstrPath)
+
+    nPaths = numel (SVGstrPath);
+    SVGpath = repmat (struct('coord', [], 'closed', [], 'id', []), 1, nPaths);
+
+    for ip = 1:nPaths
+        path = SVGstrPath{ip};
+
+        % Match data
+        [s e te m] = regexpi (path, 'd="(?:(?!").)*');
+        data=strtrim (m{1});
+        % parse data
+        d = parsePathData (data);
+        SVGpath(ip).coord = d.coord;
+        SVGpath(ip).closed = d.closed;
+
+        % Match id
+        [s e te m] = regexp (path, 'id="(?:(?!").)*');
+        if ~isempty (m)
+            SVGpath(ip).id = strtrim (m{1}(5:end));
+        end
+    end
+
+end
+
+function d = parsePathData (data)
+    
+    d = struct ('coord', [], 'closed', []);
+    
+    [s e te comm] = regexp (data, '[MmLlHhVvCcSsQqTtAaZz]{1}');
+    % TODO
+    % This info could be used to preallocate d
+    [zcomm zpos] = ismember ({'Z','z'}, comm);
+    
+    if any (zcomm)
+      d.closed = true;
+    else
+      d.closed = false;
+      s(end+1) = length (data);
+    end  
+    comm(zpos(zcomm)) = [];
+    ncomm = size (comm, 2);
+    for ic = 1:ncomm
+    
+      switch comm{ic}
+          case {'M','L'}
+            [x y] = strread (data(s(ic) + 1 : s(ic + 1) - 1), ...
+                                              '%f%f', 'delimiter', ', ');
+            coord = [x y];
+
+          case 'm'
+            [x y] = strread( data(s(ic) + 1 : s(ic + 1) - 1), ...
+                                              '%f%f', 'delimiter', ', ');
+            nc = size (x, 1);
+            coord = [x y];
+            if ic == 1
+                % relative moveto at begining of data.
+                % First coordinates are absolute, the rest are relative.
+                coord = cumsum (coord);
+            else
+                % Relative moveto.
+                % The coordinates are relative to the last one loaded
+              coord(1,:) =coord(1,:) + d.coord(end,:);
+              coord = cumsum(coord);
+              warning('svg2octWarning',['Relative moveto in path data.'...
+               ' May mean that the orginal path was not a simple polygon.' ...
+               ' If that is the case, the path will not display equally.'])
+            end
+
+          case 'l'
+            % Relative lineto, coordinates are relative to last point loaded.
+            [x y] = strread( data(s(ic) + 1 : s(ic + 1) - 1), ...
+                                              '%f%f', 'delimiter', ', ');
+            nc = size (x, 1);
+            coord = [x y]
+            coord(1,:) =coord(1,:) + d.coord(end,:);
+            coord = cumsum(coord);
+
+          otherwise
+              warning('svg2oct:Warning',...
+                      'Path data command "%s" not implemented yet.',comm{ic});
+      end
+
+      nc = size(coord,1);
+      d.coord(end+1:end+nc,:) = coord;
+
+    end
+end

Added: trunk/octave-forge/main/geometry/inst/private/formatSVGstr.m
===================================================================
--- trunk/octave-forge/main/geometry/inst/private/formatSVGstr.m	                        (rev 0)
+++ trunk/octave-forge/main/geometry/inst/private/formatSVGstr.m	2011-09-26 21:01:25 UTC (rev 8606)
@@ -0,0 +1,24 @@
+%% Copyright (c) 2011 Juan Pablo Carbajal <car...@if...>
+%% 
+%%    This program is free software: you can redistribute it and/or modify
+%%    it under the terms of the GNU General Public License as published by
+%%    the Free Software Foundation, either version 3 of the License, or
+%%    any later version.
+%%
+%%    This program is distributed in the hope that it will be useful,
+%%    but WITHOUT ANY WARRANTY; without even the implied warranty of
+%%    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+%%    GNU General Public License for more details.
+%%
+%%    You should have received a copy of the GNU General Public License
+%%    along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+function svgF = formatSVGstr(svg)
+
+    % Remove all newlines and tabs
+    svgF = strrep(svg,"\n",' ');
+    svgF = strrep(svgF,"\t",' ');
+    % Remove consecutive blanks
+    svgF = regexprep(svgF,' +',' ');
+
+end

Added: trunk/octave-forge/main/geometry/inst/private/getSVGdata.m
===================================================================
--- trunk/octave-forge/main/geometry/inst/private/getSVGdata.m	                        (rev 0)
+++ trunk/octave-forge/main/geometry/inst/private/getSVGdata.m	2011-09-26 21:01:25 UTC (rev 8606)
@@ -0,0 +1,33 @@
+%% Copyright (c) 2011 Juan Pablo Carbajal <car...@if...>
+%% 
+%%    This program is free software: you can redistribute it and/or modify
+%%    it under the terms of the GNU General Public License as published by
+%%    the Free Software Foundation, either version 3 of the License, or
+%%    any later version.
+%%
+%%    This program is distributed in the hope that it will be useful,
+%%    but WITHOUT ANY WARRANTY; without even the implied warranty of
+%%    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+%%    GNU General Public License for more details.
+%%
+%%    You should have received a copy of the GNU General Public License
+%%    along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+function svgData = getSVGdata(svg)
+
+    svgData = struct('height',[],'width',[]);
+    attr    = fieldnames(svgData);
+    nattr   = numel(attr);
+
+    [s e te data] = regexpi(svg,'<[ ]*svg(?:(?!>).)*>');
+    data=strtrim(data{1});
+
+    for a = 1:nattr
+        pattr =sprintf('%s="(?:(?!").)*',attr{a});
+        [s e te m] = regexpi(data,pattr);
+        m=strtrim(m{1});
+        [dummy value] = strread(m,'%s%f','delimiter','"');
+        svgData.(attr{a}) = value;
+    end
+
+end

Added: trunk/octave-forge/main/geometry/inst/private/getSVGstrPath.m
===================================================================
--- trunk/octave-forge/main/geometry/inst/private/getSVGstrPath.m	                        (rev 0)
+++ trunk/octave-forge/main/geometry/inst/private/getSVGstrPath.m	2011-09-26 21:01:25 UTC (rev 8606)
@@ -0,0 +1,20 @@
+%% Copyright (c) 2011 Juan Pablo Carbajal <car...@if...>
+%% 
+%%    This program is free software: you can redistribute it and/or modify
+%%    it under the terms of the GNU General Public License as published by
+%%    the Free Software Foundation, either version 3 of the License, or
+%%    any later version.
+%%
+%%    This program is distributed in the hope that it will be useful,
+%%    but WITHOUT ANY WARRANTY; without even the implied warranty of
+%%    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+%%    GNU General Public License for more details.
+%%
+%%    You should have received a copy of the GNU General Public License
+%%    along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+function strPath = getSVGstrPath(svg)
+
+    [s e te strPath] = regexpi(svg,'<[ ]*path(?:(?!/>).)*/>');
+
+end

Added: trunk/octave-forge/main/geometry/inst/private/lineGeo.m
===================================================================
--- trunk/octave-forge/main/geometry/inst/private/lineGeo.m	                        (rev 0)
+++ trunk/octave-forge/main/geometry/inst/private/lineGeo.m	2011-09-26 21:01:25 UTC (rev 8606)
@@ -0,0 +1,29 @@
+%% Copyright (c) 2010 Juan Pablo Carbajal <car...@if...>
+%% 
+%%    This program is free software: you can redistribute it and/or modify
+%%    it under the terms of the GNU General Public License as published by
+%%    the Free Software Foundation, either version 3 of the License, or
+%%    any later version.
+%%
+%%    This program is distributed in the hope that it will be useful,
+%%    but WITHOUT ANY WARRANTY; without even the implied warranty of
+%%    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+%%    GNU General Public License for more details.
+%%
+%%    You should have received a copy of the GNU General Public License
+%%    along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+%% -*- texinfo -*-
+%% @deftypefn {Function File} @var{str} = lineGeo (@var{n}, @var{pi}, @var{pj})
+%% Generates a string for Gmsh Line format.
+%%
+%% Curves are Gmsh's second type of elementery entities, and,
+%% amongst curves, straight lines are the simplest. A straight line is
+%% defined by a list of point numbers. The initial point @var{pi}, the final 
+%% point @var{pj}. @var{n} is an indetifier for the line.
+%%
+%% @end deftypefn
+
+function str = lineGeo(n,i,j)
+    str = sprintf('Line(%d) = {%d,%d};\n',n,i,j);
+end

Added: trunk/octave-forge/main/geometry/inst/private/lineLoopGeo.m
===================================================================
--- trunk/octave-forge/main/geometry/inst/private/lineLoopGeo.m	                        (rev 0)
+++ trunk/octave-forge/main/geometry/inst/private/lineLoopGeo.m	2011-09-26 21:01:25 UTC (rev 8606)
@@ -0,0 +1,32 @@
+%% Copyright (c) 2010 Juan Pablo Carbajal <car...@if...>
+%% 
+%%    This program is free software: you can redistribute it and/or modify
+%%    it under the terms of the GNU General Public License as published by
+%%    the Free Software Foundation, either version 3 of the License, or
+%%    any later version.
+%%
+%%    This program is distributed in the hope that it will be useful,
+%%    but WITHOUT ANY WARRANTY; without even the implied warranty of
+%%    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+%%    GNU General Public License for more details.
+%%
+%%    You should have received a copy of the GNU General Public License
+%%    along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+%% -*- texinfo -*-
+%% @deftypefn {Function File} @var{str} =  lineLoopGeo (@var{id}, @var{nl}, @var{lns})
+%% Generates a string for Gmsh Line Loop format.
+%%
+%% The third elementary entity is the surface. In order to define a
+%% simple rectangular surface from defined lines, a
+%% line loop has first to be defined. A line loop is a list of
+%% connected lines, a sign being associated with each line (depending
+%% on the orientation of the line). @var{id} is an indentifier for the loop.
+%% @var{nl} is the number of lines in the loop. @var{lns} is the list of lines.
+%%
+%% @end deftypefn
+
+function str = lineLoopGeo(id,nl,lns)
+    substr = repmat(',%d',1,nl-1);
+    str = sprintf(['Line Loop(%d) = {%d' substr '};\n'],id,lns);
+end

Added: trunk/octave-forge/main/geometry/inst/private/planeSurfGeo.m
===================================================================
--- trunk/octave-forge/main/geometry/inst/private/planeSurfGeo.m	                        (rev 0)
+++ trunk/octave-forge/main/geometry/inst/private/planeSurfGeo.m	2011-09-26 21:01:25 UTC (rev 8606)
@@ -0,0 +1,36 @@
+%% Copyright (c) 2010 Juan Pablo Carbajal <car...@if...>
+%% 
+%%    This program is free software: you can redistribute it and/or modify
+%%    it under the terms of the GNU General Public License as published by
+%%    the Free Software Foundation, either version 3 of the License, or
+%%    any later version.
+%%
+%%    This program is distributed in the hope that it will be useful,
+%%    but WITHOUT ANY WARRANTY; without even the implied warranty of
+%%    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+%%    GNU General Public License for more details.
+%%
+%%    You should have received a copy of the GNU General Public License
+%%    along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+%% -*- texinfo -*-
+%% @deftypefn {Function File} @var{str} =  planeSurfGeo (@var{id}, @var{nloop},@var{loops})
+%% Generates a string for Gmsh Plane Surface format.
+%%
+%% @var{id} is the plane surface's identification number.
+%% @var{nloop} is the number of loops defining the surface.
+%% @var{loops} contain the identification numbers of all the line loops defining 
+%% the surface. The first line loop defines the exterior boundary of the surface;
+%% all other line loops define holes in the surface. A line loop defining a hole
+%% should not have any lines in common with the exterior line loop (in which case
+%% it is not a hole, and the two surfaces should be defined separately). 
+%% Likewise, a line loop defining a hole should not have any lines in common with 
+%% another line loop defining a hole in the same surface (in which case the two 
+%% line loops should be combined).
+%%
+%% @end deftypefn
+
+function str = planeSurfGeo(id,nloop,loops)
+    substr = repmat(',%d',1,nloop-1);
+    str = sprintf(['Plane Surface(%d) = {%d' substr '};\n'],id,loops);
+end

Added: trunk/octave-forge/main/geometry/inst/private/pointGeo.m
===================================================================
--- trunk/octave-forge/main/geometry/inst/private/pointGeo.m	                        (rev 0)
+++ trunk/octave-forge/main/geometry/inst/private/pointGeo.m	2011-09-26 21:01:25 UTC (rev 8606)
@@ -0,0 +1,32 @@
+%% Copyright (c) 2010 Juan Pablo Carbajal <car...@if...>
+%% 
+%%    This program is free software: you can redistribute it and/or modify
+%%    it under the terms of the GNU General Public License as published by
+%%    the Free Software Foundation, either version 3 of the License, or
+%%    any later version.
+%%
+%%    This program is distributed in the hope that it will be useful,
+%%    but WITHOUT ANY WARRANTY; without even the implied warranty of
+%%    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+%%    GNU General Public License for more details.
+%%
+%%    You should have received a copy of the GNU General Public License
+%%    along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+%% -*- texinfo -*-
+%% @deftypefn {Function File} @var{str} =  poointGeo (@var{n}, @var{xyz}, @var{l})
+%% Generates a string for Gmsh Point format.
+%%
+%% Gmsh's simplest `elementary entity', a `Point'. A Point is defined by a list 
+%% of five numbers: @var{n} the identificator, @var{xyz} three coordinates (X, Y 
+%% and Z), and a characteristic length @var{l} that sets the target element size 
+%% at the point:
+%% The distribution of the mesh element sizes is then obtained by
+%% interpolation of these characteristic lengths throughout the
+%% geometry.
+%%
+%% @end deftypefn
+
+function str = pointGeo(n,xyz,l)
+    str = sprintf('Point(%d) = {%f,%f,%f,%f};\n',n,xyz,l);
+end

Added: trunk/octave-forge/main/geometry/inst/private/ruledSurfGeo.m
===================================================================
--- trunk/octave-forge/main/geometry/inst/private/ruledSurfGeo.m	                        (rev 0)
+++ trunk/octave-forge/main/geometry/inst/private/ruledSurfGeo.m	2011-09-26 21:01:25 UTC (rev 8606)
@@ -0,0 +1,39 @@
+%% Copyright (c) 2010 Juan Pablo Carbajal <car...@if...>
+%% 
+%%    This program is free software: you can redistribute it and/or modify
+%%    it under the terms of the GNU General Public License as published by
+%%    the Free Software Foundation, either version 3 of the License, or
+%%    any later version.
+%%
+%%    This program is distributed in the hope that it will be useful,
+%%    but WITHOUT ANY WARRANTY; without even the implied warranty of
+%%    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+%%    GNU General Public License for more details.
+%%
+%%    You should have received a copy of the GNU General Public License
+%%    along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+%% -*- texinfo -*-
+%% @deftypefn {Function File} @var{str} =  ruledSurfGeo (@var{id}, @var{nloop}, @var{loops}, @var{centerid})
+%% Generates a string for Gmsh Ruled Surface format.
+%%
+%% Creates a ruled surface with identifier @var{id}, i.e., a surface that can be
+%% interpolated using transfinite interpolation. @var{nloop} indicates the number
+%% of loops that define the surface. @var{loops} should contain the identification
+%% number of a line loop composed of either three or four elementary lines. 
+%% @var{centerid} is the identification number of the center of the sphere, this
+%% forces the surface to be a spherical patch. 
+%%
+%% @end deftypefn
+
+function str = ruledSurfGeo(id,nloop,loops,centerid)
+    substr = repmat(',%d',1,nloop-1);
+
+    if ~isempty(centerid)
+        str = sprintf(['Ruled Surface(%d) = {%d' substr '} In Sphere {%d};\n'], ...
+                                                                 id,loops,centerid);
+    else
+        error('data2geo:Error',"The id of the centers shouldn't be empty");
+    end
+
+end

Added: trunk/octave-forge/main/geometry/inst/svgload.m
===================================================================
--- trunk/octave-forge/main/geometry/inst/svgload.m	                        (rev 0)
+++ trunk/octave-forge/main/geometry/inst/svgload.m	2011-09-26 21:01:25 UTC (rev 8606)
@@ -0,0 +1,62 @@
+%% Copyright (c) 2011 Juan Pablo Carbajal <car...@if...>
+%% 
+%%    This program is free software: you can redistribute it and/or modify
+%%    it under the terms of the GNU General Public License as published by
+%%    the Free Software Foundation, either version 3 of the License, or
+%%    any later version.
+%%
+%%    This program is distributed in the hope that it will be useful,
+%%    but WITHOUT ANY WARRANTY; without even the implied warranty of
+%%    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+%%    GNU General Public License for more details.
+%%
+%%    You should have received a copy of the GNU General Public License
+%%    along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+%% -*- texinfo -*-
+%% @deftypefn {Function File} @var{SVG} = loadSVG (@var{filename})
+%% Reads the plain SVG file @var{filename} and retunrs an SVG structure.
+%% 
+%% In the current version only SVG path elements are parsed and stored in the field
+%% path of the @var{SVG} structure.
+%% The coordinates of the path are not modified in anyway. This produces the path
+%% to be ploted vertically reflected.
+%%
+%% @seealso{svgnormalize, svgpath2polygon}
+%% @end deftypefn
+
+
+function SVG = svgload (filename)
+
+    SVG = struct ('height', [], 'width...
 
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Thread: [Octave-cvsupdate] SF.net SVN: octave:[8606] trunk/octave-forge/main/geometry

A collection of packages providing extra functionality for GNU Octave

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