Mercurial > jwe > octave
view libinterp/dldfcn/__delaunayn__.cc @ 21126:ba0a4b4f021d
include errwarn.h in files that use err_disabled_feature conditionally
* file-io.cc, __delaunayn__.cc, __fltk_uigetfile__.cc,
__init_fltk__.cc, __voronoi__.cc, convhulln.cc: Include errwarn.h.
* __voronoi__.cc: Define CALLER for __err_disabled_feature when
HAVE_QHULL is not defined.
author | John W. Eaton <jwe@octave.org> |
---|---|
date | Thu, 21 Jan 2016 11:24:36 -0500 |
parents | bd1752782e56 |
children | fcac5dbbf9ed |
line wrap: on
line source
/* Copyright (C) 2000-2015 Kai Habel This file is part of Octave. Octave 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. Octave 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 Octave; see the file COPYING. If not, see <http://www.gnu.org/licenses/>. */ /* 16. July 2000 - Kai Habel: first release 25. September 2002 - Changes by Rafael Laboissiere <rafael@laboissiere.net> * Added Qbb option to normalize the input and avoid crashes in Octave. * delaunayn accepts now a second (optional) argument that must be a string containing extra options to the qhull command. * Fixed doc string. The dimension of the result matrix is [m, dim+1], and not [n, dim-1]. 6. June 2006: Changes by Alexander Barth <abarth@marine.usf.edu> * triangulate non-simplicial facets * allow options to be specified as cell array of strings * change the default options (for compatibility with matlab) */ #ifdef HAVE_CONFIG_H #include <config.h> #endif #include <iostream> #include <string> #include "oct-locbuf.h" #include "Cell.h" #include "defun-dld.h" #include "error.h" #include "errwarn.h" #include "ovl.h" #include "unwind-prot.h" #if defined (HAVE_QHULL) # include "oct-qhull.h" # if defined (NEED_QHULL_VERSION) char qh_version[] = "__delaunayn__.oct 2007-08-21"; # endif #endif static void close_fcn (FILE *f) { gnulib::fclose (f); } static bool octave_qhull_dims_ok (octave_idx_type dim, octave_idx_type n, const char *who) { if (sizeof (octave_idx_type) > sizeof (int)) { int maxval = std::numeric_limits<int>::max (); if (dim > maxval || n > maxval) error ("%s: dimension too large for Qhull", who); } return true; } DEFUN_DLD (__delaunayn__, args, , "-*- texinfo -*-\n\ @deftypefn {} {@var{T} =} __delaunayn__ (@var{pts})\n\ @deftypefnx {} {@var{T} =} __delaunayn__ (@var{pts}, @var{options})\n\ Undocumented internal function.\n\ @end deftypefn") { #if defined (HAVE_QHULL) int nargin = args.length (); if (nargin < 1 || nargin > 2) print_usage (); octave_value_list retval; retval(0) = 0.0; Matrix p (args(0).matrix_value ()); const octave_idx_type dim = p.columns (); const octave_idx_type n = p.rows (); if (! octave_qhull_dims_ok (dim, n, "__delaynayn__")) return retval; // Default options std::string options; if (dim <= 3) options = "Qt Qbb Qc Qz"; else options = "Qt Qbb Qc Qx"; if (nargin == 2) { if (args(1).is_string ()) options = args(1).string_value (); else if (args(1).is_empty ()) ; // Use default options else if (args(1).is_cellstr ()) { options = ""; Array<std::string> tmp = args(1).cellstr_value (); for (octave_idx_type i = 0; i < tmp.numel (); i++) options += tmp(i) + " "; } else error ("__delaunayn__: OPTIONS argument must be a string, cell array of strings, or empty"); } if (n > dim + 1) { p = p.transpose (); double *pt_array = p.fortran_vec (); boolT ismalloc = false; // Qhull flags argument is not const char* OCTAVE_LOCAL_BUFFER (char, flags, 9 + options.length ()); sprintf (flags, "qhull d %s", options.c_str ()); unwind_protect frame; // Replace the outfile pointer with stdout for debugging information. #if defined (OCTAVE_HAVE_WINDOWS_FILESYSTEM) && ! defined (OCTAVE_HAVE_POSIX_FILESYSTEM) FILE *outfile = gnulib::fopen ("NUL", "w"); #else FILE *outfile = gnulib::fopen ("/dev/null", "w"); #endif FILE *errfile = stderr; if (! outfile) error ("__delaunayn__: unable to create temporary file for output"); frame.add_fcn (close_fcn, outfile); int exitcode = qh_new_qhull (dim, n, pt_array, ismalloc, flags, outfile, errfile); if (exitcode) error ("__delaunayn__: qhull failed"); // triangulate non-simplicial facets qh_triangulate (); facetT *facet; vertexT *vertex, **vertexp; octave_idx_type nf = 0; octave_idx_type i = 0; FORALLfacets { if (! facet->upperdelaunay) nf++; // Double check. Non-simplicial facets will cause segfault below if (! facet->simplicial) error ("__delaunayn__: Qhull returned non-simplicial facets -- try delaunayn with different options"); } if (! exitcode) { Matrix simpl (nf, dim+1); FORALLfacets { if (! facet->upperdelaunay) { octave_idx_type j = 0; FOREACHvertex_ (facet->vertices) { simpl(i, j++) = 1 + qh_pointid(vertex->point); } i++; } } retval(0) = simpl; } // Free memory from Qhull qh_freeqhull (! qh_ALL); int curlong, totlong; qh_memfreeshort (&curlong, &totlong); if (curlong || totlong) warning ("__delaunay__: did not free %d bytes of long memory (%d pieces)", totlong, curlong); } else if (n == dim + 1) { // one should check if nx points span a simplex // I will look at this later. RowVector vec (n); for (octave_idx_type i = 0; i < n; i++) vec(i) = i + 1.0; retval(0) = vec; } return retval; #else err_disabled_feature ("__delaunayn__", "Qhull"); #endif } /* ## No test needed for internal helper function. %!assert (1) */