octave: libinterp/corefcn/__contourc_

annotate libinterp/corefcn/contourc.cc @ 27919:1891570abac8

update Octave Project Developers copyright for the new year In files that have the "Octave Project Developers" copyright notice, update for 2020.

author	John W. Eaton <jwe@octave.org>
date	Mon, 06 Jan 2020 22:29:51 -0500
parents	b442ec6dda5c
children	bd51beb6205e

rev	line source
6257 44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	1 /* Contour lines for function evaluated on a grid.
44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	2
27919 1891570abac8 update Octave Project Developers copyright for the new year John W. Eaton <jwe@octave.org> parents: 27918 diff changeset	3 Copyright (C) 2001-2020 The Octave Project Developers
27918 b442ec6dda5c use centralized file for copyright info for individual contributors John W. Eaton <jwe@octave.org> parents: 26376 diff changeset	4
b442ec6dda5c use centralized file for copyright info for individual contributors John W. Eaton <jwe@octave.org> parents: 26376 diff changeset	5 See the file COPYRIGHT.md in the top-level directory of this distribution
b442ec6dda5c use centralized file for copyright info for individual contributors John W. Eaton <jwe@octave.org> parents: 26376 diff changeset	6 or <https://octave.org/COPYRIGHT.html/>.
b442ec6dda5c use centralized file for copyright info for individual contributors John W. Eaton <jwe@octave.org> parents: 26376 diff changeset	7
6257 44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	8
44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	9 Adapted to an oct file from the stand alone contourl by Victro Munoz
44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	10 Copyright (C) 2004 Victor Munoz
44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	11
44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	12 Based on contour plot routine (plcont.c) in PLPlot package
44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	13 http://plplot.org/
44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	14
44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	15 Copyright (C) 1995, 2000, 2001 Maurice LeBrun
44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	16 Copyright (C) 2000, 2002 Joao Cardoso
21562 6c2fd62db1f7 maint: Eliminate accidental double spaces in code. Rik <rik@octave.org> parents: 21301 diff changeset	17 Copyright (C) 2000, 2001, 2002, 2004 Alan W. Irwin
6c2fd62db1f7 maint: Eliminate accidental double spaces in code. Rik <rik@octave.org> parents: 21301 diff changeset	18 Copyright (C) 2004 Andrew Ross
6257 44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	19
27918 b442ec6dda5c use centralized file for copyright info for individual contributors John W. Eaton <jwe@octave.org> parents: 26376 diff changeset	20
6257 44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	21 This file is part of Octave.
44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	22
24534 194eb4bd202b maint: Update punctuation for GPL v3 license text. Rik <rik@octave.org> parents: 23455 diff changeset	23 Octave is free software: you can redistribute it and/or modify it
22755 3a2b891d0b33 maint: Standardize Copyright formatting. Rik <rik@octave.org> parents: 22407 diff changeset	24 under the terms of the GNU General Public License as published by
24534 194eb4bd202b maint: Update punctuation for GPL v3 license text. Rik <rik@octave.org> parents: 23455 diff changeset	25 the Free Software Foundation, either version 3 of the License, or
22755 3a2b891d0b33 maint: Standardize Copyright formatting. Rik <rik@octave.org> parents: 22407 diff changeset	26 (at your option) any later version.
6257 44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	27
22755 3a2b891d0b33 maint: Standardize Copyright formatting. Rik <rik@octave.org> parents: 22407 diff changeset	28 Octave is distributed in the hope that it will be useful, but
3a2b891d0b33 maint: Standardize Copyright formatting. Rik <rik@octave.org> parents: 22407 diff changeset	29 WITHOUT ANY WARRANTY; without even the implied warranty of
3a2b891d0b33 maint: Standardize Copyright formatting. Rik <rik@octave.org> parents: 22407 diff changeset	30 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
3a2b891d0b33 maint: Standardize Copyright formatting. Rik <rik@octave.org> parents: 22407 diff changeset	31 GNU General Public License for more details.
6257 44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	32
44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	33 You should have received a copy of the GNU General Public License
7016 93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe] jwe parents: 6945 diff changeset	34 along with Octave; see the file COPYING. If not, see
24534 194eb4bd202b maint: Update punctuation for GPL v3 license text. Rik <rik@octave.org> parents: 23455 diff changeset	35 <https://www.gnu.org/licenses/>.
6257 44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	36
44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	37 */
44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	38
21724 aba2e6293dd8 use "#if ..." consistently instead of "#ifdef" and "#ifndef" John W. Eaton <jwe@octave.org> parents: 21562 diff changeset	39 #if defined (HAVE_CONFIG_H)
21301 40de9f8f23a6 Use '#include "config.h"' rather than <config.h>. Rik <rik@octave.org> parents: 21200 diff changeset	40 # include "config.h"
6257 44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	41 #endif
44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	42
23455 73ff72d3d603 maint: Eliminate <cfloat.h> header from libinterp files Rik <rik@octave.org> parents: 23220 diff changeset	43 #include <limits>
6257 44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	44
15039 e753177cde93 maint: Move non-dynamically linked functions from DLD-FUNCTIONS/ to corefcn/ directory Rik <rik@octave.org> parents: 14501 diff changeset	45 #include "defun.h"
23455 73ff72d3d603 maint: Eliminate <cfloat.h> header from libinterp files Rik <rik@octave.org> parents: 23220 diff changeset	46 #include "ov.h"
6257 44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	47
20802 8bb38ba1bad6 eliminate return statements after calls to print_usage John W. Eaton <jwe@octave.org> parents: 20667 diff changeset	48 // FIXME: this looks like trouble...
6257 44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	49 static Matrix this_contour;
44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	50 static Matrix contourc;
44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	51 static int elem;
44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	52
7042 e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	53 // This is the quanta in which we increase this_contour.
6257 44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	54 #define CONTOUR_QUANT 50
44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	55
7042 e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	56 // Add a coordinate point (x,y) to this_contour.
6257 44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	57
44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	58 static void
7042 e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	59 add_point (double x, double y)
6257 44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	60 {
44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	61 if (elem % CONTOUR_QUANT == 0)
44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	62 this_contour = this_contour.append (Matrix (2, CONTOUR_QUANT, 0));
44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	63
44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	64 this_contour (0, elem) = x;
44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	65 this_contour (1, elem) = y;
44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	66 elem++;
44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	67 }
44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	68
7042 e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	69 // Add contents of current contour to contourc.
6257 44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	70 // this_contour.cols () - 1;
44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	71
44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	72 static void
7042 e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	73 end_contour (void)
6257 44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	74 {
44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	75 if (elem > 2)
44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	76 {
44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	77 this_contour (1, 0) = elem - 1;
44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	78 contourc = contourc.append (this_contour.extract_n (0, 0, 2, elem));
44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	79 }
7042 e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	80
6257 44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	81 this_contour = Matrix ();
44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	82 elem = 0;
44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	83 }
44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	84
7042 e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	85 // Start a new contour, and add contents of current one to contourc.
6257 44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	86
44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	87 static void
7042 e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	88 start_contour (double lvl, double x, double y)
6257 44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	89 {
7042 e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	90 end_contour ();
6257 44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	91 this_contour.resize (2, 0);
7042 e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	92 add_point (lvl, 0);
e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	93 add_point (x, y);
6257 44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	94 }
44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	95
44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	96 static void
7042 e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	97 drawcn (const RowVector& X, const RowVector& Y, const Matrix& Z,
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 8920 diff changeset	98 double lvl, int r, int c, double ct_x, double ct_y,
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 8920 diff changeset	99 unsigned int start_edge, bool first, charMatrix& mark)
6257 44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	100 {
7042 e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	101 double px[4], py[4], pz[4], tmp;
15867 704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	102 unsigned int stop_edge, pt[2];
704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	103
704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	104 // Continue while next facet is not done yet.
704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	105 while (r >= 0 && c >= 0 && r < mark.rows () && c < mark.cols ()
704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	106 && mark(r, c) > 0)
704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	107 {
6257 44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	108
15867 704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	109 //get x, y, and z - lvl for current facet
704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	110 px[0] = px[3] = X(c);
704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	111 px[1] = px[2] = X(c+1);
6257 44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	112
15867 704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	113 py[0] = py[1] = Y(r);
704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	114 py[2] = py[3] = Y(r+1);
704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	115
704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	116 pz[3] = Z(r+1, c) - lvl;
704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	117 pz[2] = Z(r+1, c + 1) - lvl;
704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	118 pz[1] = Z(r, c+1) - lvl;
704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	119 pz[0] = Z(r, c) - lvl;
6257 44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	120
15867 704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	121 // Facet edge and point naming assignment.
704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	122 //
704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	123 // 0-----1 .-0-.
704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	124 // \| \| \| \|
704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	125 // \| \| 3 1
704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	126 // \| \| \| \|
704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	127 // 3-----2 .-2-.
6257 44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	128
15867 704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	129 // Get mark value of current facet.
704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	130 char id = static_cast<char> (mark(r, c));
704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	131
704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	132 // Check startedge s.
704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	133 if (start_edge == 255)
704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	134 {
704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	135 // Find start edge.
704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	136 for (unsigned int k = 0; k < 4; k++)
704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	137 if (static_cast<char> (1 << k) & id)
704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	138 start_edge = k;
704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	139 }
6257 44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	140
15867 704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	141 if (start_edge == 255)
704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	142 break;
704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	143
704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	144 // Decrease mark value of current facet for start edge.
704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	145 mark(r, c) -= static_cast<char> (1 << start_edge);
7042 e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	146
15867 704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	147 // Next point (clockwise).
704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	148 pt[0] = start_edge;
704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	149 pt[1] = (pt[0] + 1) % 4;
704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	150
704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	151 // Calculate contour segment start if first of contour.
704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	152 if (first)
704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	153 {
704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	154 tmp = fabs (pz[pt[1]]) / fabs (pz[pt[0]]);
6257 44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	155
21782 2aef506f3fec use namespace for lo-mappers.h functions John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	156 if (octave::math::isnan (tmp))
15867 704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	157 ct_x = ct_y = 0.5;
704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	158 else
704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	159 {
704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	160 ct_x = px[pt[0]] + (px[pt[1]] - px[pt[0]])/(1 + tmp);
704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	161 ct_y = py[pt[0]] + (py[pt[1]] - py[pt[0]])/(1 + tmp);
704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	162 }
7042 e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	163
15867 704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	164 start_contour (lvl, ct_x, ct_y);
704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	165 first = false;
704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	166 }
6257 44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	167
15867 704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	168 // Find stop edge.
17787 175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	169 // FIXME: perhaps this should use a while loop?
15867 704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	170 for (unsigned int k = 1; k <= 4; k++)
704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	171 {
704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	172 if (start_edge == 0 \|\| start_edge == 2)
704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	173 stop_edge = (start_edge + k) % 4;
704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	174 else
704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	175 stop_edge = (start_edge - k) % 4;
7042 e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	176
15867 704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	177 if (static_cast<char> (1 << stop_edge) & id)
704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	178 break;
704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	179 }
704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	180
704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	181 pt[0] = stop_edge;
704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	182 pt[1] = (pt[0] + 1) % 4;
7042 e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	183 tmp = fabs (pz[pt[1]]) / fabs (pz[pt[0]]);
e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	184
21782 2aef506f3fec use namespace for lo-mappers.h functions John W. Eaton <jwe@octave.org> parents: 21724 diff changeset	185 if (octave::math::isnan (tmp))
7042 e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	186 ct_x = ct_y = 0.5;
e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	187 else
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 8920 diff changeset	188 {
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 8920 diff changeset	189 ct_x = px[pt[0]] + (px[pt[1]] - px[pt[0]])/(1 + tmp);
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 8920 diff changeset	190 ct_y = py[pt[0]] + (py[pt[1]] - py[pt[0]])/(1 + tmp);
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 8920 diff changeset	191 }
7042 e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	192
15867 704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	193 // Add point to contour.
704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	194 add_point (ct_x, ct_y);
7042 e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	195
15867 704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	196 // Decrease id value of current facet for start edge.
704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	197 mark(r, c) -= static_cast<char> (1 << stop_edge);
6257 44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	198
15867 704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	199 // Find next facet.
704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	200 if (stop_edge == 0)
704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	201 r--;
704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	202 else if (stop_edge == 1)
704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	203 c++;
704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	204 else if (stop_edge == 2)
704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	205 r++;
704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	206 else if (stop_edge == 3)
704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	207 c--;
7042 e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	208
15867 704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	209 // Go to next facet.
704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	210 start_edge = (stop_edge + 2) % 4;
7042 e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	211
6257 44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	212 }
44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	213 }
44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	214
44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	215 static void
7042 e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	216 mark_facets (const Matrix& Z, charMatrix& mark, double lvl)
6257 44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	217 {
7070 7593f8e83a2e [project @ 2007-10-25 20:41:16 by jwe] jwe parents: 7042 diff changeset	218 unsigned int nr = mark.rows ();
7593f8e83a2e [project @ 2007-10-25 20:41:16 by jwe] jwe parents: 7042 diff changeset	219 unsigned int nc = mark.cols ();
7042 e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	220
e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	221 double f[4];
e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	222
7070 7593f8e83a2e [project @ 2007-10-25 20:41:16 by jwe] jwe parents: 7042 diff changeset	223 for (unsigned int c = 0; c < nc; c++)
7593f8e83a2e [project @ 2007-10-25 20:41:16 by jwe] jwe parents: 7042 diff changeset	224 for (unsigned int r = 0; r < nr; r++)
7042 e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	225 {
e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	226 f[0] = Z(r, c) - lvl;
e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	227 f[1] = Z(r, c+1) - lvl;
e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	228 f[3] = Z(r+1, c) - lvl;
e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	229 f[2] = Z(r+1, c+1) - lvl;
e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	230
7070 7593f8e83a2e [project @ 2007-10-25 20:41:16 by jwe] jwe parents: 7042 diff changeset	231 for (unsigned int i = 0; i < 4; i++)
15220 61822c866ba1 use std::numeric_limits<T>::epsilon in C++ code John W. Eaton <jwe@octave.org> parents: 15195 diff changeset	232 if (fabs(f[i]) < std::numeric_limits<double>::epsilon ())
61822c866ba1 use std::numeric_limits<T>::epsilon in C++ code John W. Eaton <jwe@octave.org> parents: 15195 diff changeset	233 f[i] = std::numeric_limits<double>::epsilon ();
7042 e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	234
e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	235 if (f[1] * f[2] < 0)
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 8920 diff changeset	236 mark(r, c) += 2;
7042 e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	237
e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	238 if (f[0] * f[3] < 0)
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 8920 diff changeset	239 mark(r, c) += 8;
7042 e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	240 }
6257 44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	241
7070 7593f8e83a2e [project @ 2007-10-25 20:41:16 by jwe] jwe parents: 7042 diff changeset	242 for (unsigned int r = 0; r < nr; r++)
7593f8e83a2e [project @ 2007-10-25 20:41:16 by jwe] jwe parents: 7042 diff changeset	243 for (unsigned int c = 0; c < nc; c++)
7042 e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	244 {
e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	245 f[0] = Z(r, c) - lvl;
e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	246 f[1] = Z(r, c+1) - lvl;
e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	247 f[3] = Z(r+1, c) - lvl;
e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	248 f[2] = Z(r+1, c+1) - lvl;
e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	249
7070 7593f8e83a2e [project @ 2007-10-25 20:41:16 by jwe] jwe parents: 7042 diff changeset	250 for (unsigned int i = 0; i < 4; i++)
15220 61822c866ba1 use std::numeric_limits<T>::epsilon in C++ code John W. Eaton <jwe@octave.org> parents: 15195 diff changeset	251 if (fabs(f[i]) < std::numeric_limits<double>::epsilon ())
61822c866ba1 use std::numeric_limits<T>::epsilon in C++ code John W. Eaton <jwe@octave.org> parents: 15195 diff changeset	252 f[i] = std::numeric_limits<double>::epsilon ();
7042 e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	253
e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	254 if (f[0] * f[1] < 0)
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 8920 diff changeset	255 mark(r, c) += 1;
7042 e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	256
e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	257 if (f[2] * f[3] < 0)
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 8920 diff changeset	258 mark(r, c) += 4;
7042 e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	259 }
e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	260 }
e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	261
e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	262 static void
e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	263 cntr (const RowVector& X, const RowVector& Y, const Matrix& Z, double lvl)
e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	264 {
7070 7593f8e83a2e [project @ 2007-10-25 20:41:16 by jwe] jwe parents: 7042 diff changeset	265 unsigned int nr = Z.rows ();
7593f8e83a2e [project @ 2007-10-25 20:41:16 by jwe] jwe parents: 7042 diff changeset	266 unsigned int nc = Z.cols ();
7042 e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	267
e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	268 charMatrix mark (nr - 1, nc - 1, 0);
e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	269
e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	270 mark_facets (Z, mark, lvl);
e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	271
e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	272 // Find contours that start at a domain edge.
e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	273
7070 7593f8e83a2e [project @ 2007-10-25 20:41:16 by jwe] jwe parents: 7042 diff changeset	274 for (unsigned int c = 0; c < nc - 1; c++)
6257 44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	275 {
7042 e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	276 // Top.
e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	277 if (mark(0, c) & 1)
e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	278 drawcn (X, Y, Z, lvl, 0, c, 0.0, 0.0, 0, true, mark);
e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	279
e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	280 // Bottom.
e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	281 if (mark(nr - 2, c) & 4)
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 8920 diff changeset	282 drawcn (X, Y, Z, lvl, nr - 2, c, 0.0, 0.0, 2, true, mark);
6257 44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	283 }
7042 e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	284
7070 7593f8e83a2e [project @ 2007-10-25 20:41:16 by jwe] jwe parents: 7042 diff changeset	285 for (unsigned int r = 0; r < nr - 1; r++)
7042 e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	286 {
e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	287 // Left.
e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	288 if (mark(r, 0) & 8)
e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	289 drawcn (X, Y, Z, lvl, r, 0, 0.0, 0.0, 3, true, mark);
e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	290
e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	291 // Right.
e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	292 if (mark(r, nc - 2) & 2)
e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	293 drawcn (X, Y, Z, lvl, r, nc - 2, 0.0, 0.0, 1, true, mark);
e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	294 }
e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	295
7070 7593f8e83a2e [project @ 2007-10-25 20:41:16 by jwe] jwe parents: 7042 diff changeset	296 for (unsigned int r = 0; r < nr - 1; r++)
7593f8e83a2e [project @ 2007-10-25 20:41:16 by jwe] jwe parents: 7042 diff changeset	297 for (unsigned int c = 0; c < nc - 1; c++)
7042 e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	298 if (mark (r, c) > 0)
e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	299 drawcn (X, Y, Z, lvl, r, c, 0.0, 0.0, 255, true, mark);
6257 44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	300 }
44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	301
15039 e753177cde93 maint: Move non-dynamically linked functions from DLD-FUNCTIONS/ to corefcn/ directory Rik <rik@octave.org> parents: 14501 diff changeset	302 DEFUN (__contourc__, args, ,
21966 112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21782 diff changeset	303 doc: /* -- texinfo --
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21782 diff changeset	304 @deftypefn {} {} __contourc__ (@var{x}, @var{y}, @var{z}, @var{levels})
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21782 diff changeset	305 Undocumented internal function.
112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21782 diff changeset	306 @end deftypefn */)
6257 44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	307 {
20802 8bb38ba1bad6 eliminate return statements after calls to print_usage John W. Eaton <jwe@octave.org> parents: 20667 diff changeset	308 if (args.length () != 4)
6257 44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	309 print_usage ();
44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	310
20802 8bb38ba1bad6 eliminate return statements after calls to print_usage John W. Eaton <jwe@octave.org> parents: 20667 diff changeset	311 RowVector X = args(0).row_vector_value ();
8bb38ba1bad6 eliminate return statements after calls to print_usage John W. Eaton <jwe@octave.org> parents: 20667 diff changeset	312 RowVector Y = args(1).row_vector_value ();
8bb38ba1bad6 eliminate return statements after calls to print_usage John W. Eaton <jwe@octave.org> parents: 20667 diff changeset	313 Matrix Z = args(2).matrix_value ();
8bb38ba1bad6 eliminate return statements after calls to print_usage John W. Eaton <jwe@octave.org> parents: 20667 diff changeset	314 RowVector L = args(3).row_vector_value ();
8bb38ba1bad6 eliminate return statements after calls to print_usage John W. Eaton <jwe@octave.org> parents: 20667 diff changeset	315
8bb38ba1bad6 eliminate return statements after calls to print_usage John W. Eaton <jwe@octave.org> parents: 20667 diff changeset	316 contourc.resize (2, 0);
8bb38ba1bad6 eliminate return statements after calls to print_usage John W. Eaton <jwe@octave.org> parents: 20667 diff changeset	317
8bb38ba1bad6 eliminate return statements after calls to print_usage John W. Eaton <jwe@octave.org> parents: 20667 diff changeset	318 for (int i = 0; i < L.numel (); i++)
8bb38ba1bad6 eliminate return statements after calls to print_usage John W. Eaton <jwe@octave.org> parents: 20667 diff changeset	319 cntr (X, Y, Z, L (i));
8bb38ba1bad6 eliminate return statements after calls to print_usage John W. Eaton <jwe@octave.org> parents: 20667 diff changeset	320
8bb38ba1bad6 eliminate return statements after calls to print_usage John W. Eaton <jwe@octave.org> parents: 20667 diff changeset	321 end_contour ();
8bb38ba1bad6 eliminate return statements after calls to print_usage John W. Eaton <jwe@octave.org> parents: 20667 diff changeset	322
8bb38ba1bad6 eliminate return statements after calls to print_usage John W. Eaton <jwe@octave.org> parents: 20667 diff changeset	323 return octave_value (contourc);
6257 44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	324 }
12805 3641167e5b75 codesprint: .cc helper functions do not need tests Rik <octave@nomad.inbox5.com>* parents: 11586 diff changeset	325
3641167e5b75 codesprint: .cc helper functions do not need tests Rik <octave@nomad.inbox5.com>* parents: 11586 diff changeset	326 /*
3641167e5b75 codesprint: .cc helper functions do not need tests Rik <octave@nomad.inbox5.com>* parents: 11586 diff changeset	327 ## No test needed for internal helper function.
3641167e5b75 codesprint: .cc helper functions do not need tests Rik <octave@nomad.inbox5.com>* parents: 11586 diff changeset	328 %!assert (1)
3641167e5b75 codesprint: .cc helper functions do not need tests Rik <octave@nomad.inbox5.com>* parents: 11586 diff changeset	329 */

Mercurial > octave

annotate libinterp/corefcn/__contourc__.cc @ 27919:1891570abac8

annotate libinterp/corefcn/contourc.cc @ 27919:1891570abac8