/usr/share/octave/packages/geometry-1.7.0/meshes3d/private/formatMeshOutput.m is in octave-geometry 1.7.0-1build1.
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## 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
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## -*- texinfo -*-
## @deftypefn {Function File} {@var{output} =} formatMeshOutput (@var{nbargs}, @var{vertices},@var{edges},@var{faces})
## @deftypefnx {Function File} {@var{output} =} formatMeshOutput (@var{nbargs}, @var{vertices},@var{faces})
## Format mesh output depending on nargout
##
## OUTPUT = formatMeshOutput(@var{nbargs}, VERTICES, EDGES, FACES)
## Utilitary function to convert mesh data .
## If @var{nbargs} is 0 or 1, return a matlab structure with fields vertices,
## edges and faces.
## If @var{nbargs} is 2, return a cell array with data VERTICES and FACES.
## If @var{nbargs} is 3, return a cell array with data VERTICES, EDGES and
## FACES.
##
## OUTPUT = formatMeshOutput(@var{nbargs}, VERTICES, FACES)
## Same as before, but do not intialize EDGES in output. NARGOUT can not
## be equal to 3.
##
## Example
## # Typical calling sequence (for a very basic mesh of only one face)
## v = [0 0; 0 1;1 0;1 1];
## e = [1 2;1 3;2 4;3 4];
## f = [1 2 3 4];
##
## varargout = formatMeshOutput(nargout, v, e, f);
##
## @seealso{meshes3d, parseMeshData}
## @end deftypefn
function res = formatMeshOutput(nbArgs, vertices, edges, faces)
if nargin < 4
faces = edges;
edges = [];
end
switch nbArgs
case {0, 1}
# output is a data structure with fields vertices, edges and faces
mesh.vertices = vertices;
mesh.edges = edges;
mesh.faces = faces;
res = {mesh};
case 2
# keep only vertices and faces
res = cell(nbArgs, 1);
res{1} = vertices;
res{2} = faces;
case 3
# return vertices, edges and faces as 3 separate outputs
res = cell(nbArgs, 1);
res{1} = vertices;
res{2} = edges;
res{3} = faces;
otherwise
error('Can not manage more than 3 outputs');
end
endfunction
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