octave: libinterp/corefcn/__contourc_

annotate libinterp/corefcn/contourc.cc @ 31605:e88a07dec498 stable

maint: Use macros to begin/end C++ namespaces. * oct-conf-post-public.in.h: Define two macros (OCTAVE_BEGIN_NAMESPACE, OCTAVE_END_NAMESPACE) that can be used to start/end a namespace. * mk-opts.pl, build-env.h, build-env.in.cc, __betainc__.cc, __contourc__.cc, __dsearchn__.cc, __eigs__.cc, __expint__.cc, __ftp__.cc, __gammainc__.cc, __ichol__.cc, __ilu__.cc, __isprimelarge__.cc, __lin_interpn__.cc, __magick_read__.cc, __pchip_deriv__.cc, __qp__.cc, amd.cc, auto-shlib.cc, auto-shlib.h, balance.cc, base-text-renderer.cc, base-text-renderer.h, besselj.cc, bitfcns.cc, bsxfun.cc, c-file-ptr-stream.cc, c-file-ptr-stream.h, call-stack.cc, call-stack.h, ccolamd.cc, cellfun.cc, chol.cc, colamd.cc, colloc.cc, conv2.cc, daspk.cc, dasrt.cc, dassl.cc, data.cc, data.h, debug.cc, defaults.cc, defaults.h, defun-int.h, defun.cc, det.cc, dirfns.cc, display.cc, display.h, dlmread.cc, dmperm.cc, dot.cc, dynamic-ld.cc, dynamic-ld.h, eig.cc, ellipj.cc, environment.cc, environment.h, error.cc, error.h, errwarn.h, event-manager.cc, event-manager.h, event-queue.cc, event-queue.h, fcn-info.cc, fcn-info.h, fft.cc, fft2.cc, fftn.cc, file-io.cc, filter.cc, find.cc, ft-text-renderer.cc, ft-text-renderer.h, gcd.cc, getgrent.cc, getpwent.cc, getrusage.cc, givens.cc, gl-render.cc, gl-render.h, gl2ps-print.cc, gl2ps-print.h, graphics-toolkit.cc, graphics-toolkit.h, graphics.cc, graphics.in.h, gsvd.cc, gtk-manager.cc, gtk-manager.h, hash.cc, help.cc, help.h, hess.cc, hex2num.cc, hook-fcn.cc, hook-fcn.h, input.cc, input.h, interpreter-private.cc, interpreter-private.h, interpreter.cc, interpreter.h, inv.cc, jsondecode.cc, jsonencode.cc, kron.cc, latex-text-renderer.cc, latex-text-renderer.h, load-path.cc, load-path.h, load-save.cc, load-save.h, lookup.cc, ls-ascii-helper.cc, ls-ascii-helper.h, ls-oct-text.cc, ls-utils.cc, ls-utils.h, lsode.cc, lu.cc, mappers.cc, matrix_type.cc, max.cc, mex-private.h, mex.cc, mgorth.cc, nproc.cc, oct-fstrm.cc, oct-fstrm.h, oct-hdf5-types.cc, oct-hdf5-types.h, oct-hist.cc, oct-hist.h, oct-iostrm.cc, oct-iostrm.h, oct-opengl.h, oct-prcstrm.cc, oct-prcstrm.h, oct-procbuf.cc, oct-procbuf.h, oct-process.cc, oct-process.h, oct-stdstrm.h, oct-stream.cc, oct-stream.h, oct-strstrm.cc, oct-strstrm.h, oct-tex-lexer.in.ll, oct-tex-parser.yy, ordqz.cc, ordschur.cc, pager.cc, pager.h, pinv.cc, pow2.cc, pr-flt-fmt.cc, pr-output.cc, procstream.cc, procstream.h, psi.cc, qr.cc, quad.cc, quadcc.cc, qz.cc, rand.cc, rcond.cc, regexp.cc, schur.cc, settings.cc, settings.h, sighandlers.cc, sighandlers.h, sparse-xdiv.cc, sparse-xdiv.h, sparse-xpow.cc, sparse-xpow.h, sparse.cc, spparms.cc, sqrtm.cc, stack-frame.cc, stack-frame.h, stream-euler.cc, strfind.cc, strfns.cc, sub2ind.cc, svd.cc, sylvester.cc, symbfact.cc, syminfo.cc, syminfo.h, symrcm.cc, symrec.cc, symrec.h, symscope.cc, symscope.h, symtab.cc, symtab.h, syscalls.cc, sysdep.cc, sysdep.h, text-engine.cc, text-engine.h, text-renderer.cc, text-renderer.h, time.cc, toplev.cc, tril.cc, tsearch.cc, typecast.cc, url-handle-manager.cc, url-handle-manager.h, urlwrite.cc, utils.cc, utils.h, variables.cc, variables.h, xdiv.cc, xdiv.h, xnorm.cc, xnorm.h, xpow.cc, xpow.h, __delaunayn__.cc, __fltk_uigetfile__.cc, __glpk__.cc, __init_fltk__.cc, __init_gnuplot__.cc, __ode15__.cc, __voronoi__.cc, audiodevinfo.cc, audioread.cc, convhulln.cc, fftw.cc, gzip.cc, mk-build-env-features.sh, mk-builtins.pl, cdef-class.cc, cdef-class.h, cdef-fwd.h, cdef-manager.cc, cdef-manager.h, cdef-method.cc, cdef-method.h, cdef-object.cc, cdef-object.h, cdef-package.cc, cdef-package.h, cdef-property.cc, cdef-property.h, cdef-utils.cc, cdef-utils.h, ov-base.cc, ov-base.h, ov-bool-mat.cc, ov-builtin.h, ov-cell.cc, ov-class.cc, ov-class.h, ov-classdef.cc, ov-classdef.h, ov-complex.cc, ov-fcn-handle.cc, ov-fcn-handle.h, ov-fcn.h, ov-java.cc, ov-java.h, ov-mex-fcn.h, ov-null-mat.cc, ov-oncleanup.cc, ov-struct.cc, ov-typeinfo.cc, ov-typeinfo.h, ov-usr-fcn.cc, ov-usr-fcn.h, ov.cc, ov.h, octave.cc, octave.h, mk-ops.sh, op-b-b.cc, op-b-bm.cc, op-b-sbm.cc, op-bm-b.cc, op-bm-bm.cc, op-bm-sbm.cc, op-cdm-cdm.cc, op-cell.cc, op-chm.cc, op-class.cc, op-cm-cm.cc, op-cm-cs.cc, op-cm-m.cc, op-cm-s.cc, op-cm-scm.cc, op-cm-sm.cc, op-cs-cm.cc, op-cs-cs.cc, op-cs-m.cc, op-cs-s.cc, op-cs-scm.cc, op-cs-sm.cc, op-dm-dm.cc, op-dm-scm.cc, op-dm-sm.cc, op-dm-template.cc, op-dms-template.cc, op-fcdm-fcdm.cc, op-fcm-fcm.cc, op-fcm-fcs.cc, op-fcm-fm.cc, op-fcm-fs.cc, op-fcn.cc, op-fcs-fcm.cc, op-fcs-fcs.cc, op-fcs-fm.cc, op-fcs-fs.cc, op-fdm-fdm.cc, op-fm-fcm.cc, op-fm-fcs.cc, op-fm-fm.cc, op-fm-fs.cc, op-fs-fcm.cc, op-fs-fcs.cc, op-fs-fm.cc, op-fs-fs.cc, op-i16-i16.cc, op-i32-i32.cc, op-i64-i64.cc, op-i8-i8.cc, op-int-concat.cc, op-m-cm.cc, op-m-cs.cc, op-m-m.cc, op-m-s.cc, op-m-scm.cc, op-m-sm.cc, op-mi.cc, op-pm-pm.cc, op-pm-scm.cc, op-pm-sm.cc, op-pm-template.cc, op-range.cc, op-s-cm.cc, op-s-cs.cc, op-s-m.cc, op-s-s.cc, op-s-scm.cc, op-s-sm.cc, op-sbm-b.cc, op-sbm-bm.cc, op-sbm-sbm.cc, op-scm-cm.cc, op-scm-cs.cc, op-scm-m.cc, op-scm-s.cc, op-scm-scm.cc, op-scm-sm.cc, op-sm-cm.cc, op-sm-cs.cc, op-sm-m.cc, op-sm-s.cc, op-sm-scm.cc, op-sm-sm.cc, op-str-m.cc, op-str-s.cc, op-str-str.cc, op-struct.cc, op-ui16-ui16.cc, op-ui32-ui32.cc, op-ui64-ui64.cc, op-ui8-ui8.cc, ops.h, anon-fcn-validator.cc, anon-fcn-validator.h, bp-table.cc, bp-table.h, comment-list.cc, comment-list.h, filepos.h, lex.h, lex.ll, oct-lvalue.cc, oct-lvalue.h, oct-parse.yy, parse.h, profiler.cc, profiler.h, pt-anon-scopes.cc, pt-anon-scopes.h, pt-arg-list.cc, pt-arg-list.h, pt-args-block.cc, pt-args-block.h, pt-array-list.cc, pt-array-list.h, pt-assign.cc, pt-assign.h, pt-binop.cc, pt-binop.h, pt-bp.cc, pt-bp.h, pt-cbinop.cc, pt-cbinop.h, pt-cell.cc, pt-cell.h, pt-check.cc, pt-check.h, pt-classdef.cc, pt-classdef.h, pt-cmd.h, pt-colon.cc, pt-colon.h, pt-const.cc, pt-const.h, pt-decl.cc, pt-decl.h, pt-eval.cc, pt-eval.h, pt-except.cc, pt-except.h, pt-exp.cc, pt-exp.h, pt-fcn-handle.cc, pt-fcn-handle.h, pt-id.cc, pt-id.h, pt-idx.cc, pt-idx.h, pt-jump.h, pt-loop.cc, pt-loop.h, pt-mat.cc, pt-mat.h, pt-misc.cc, pt-misc.h, pt-pr-code.cc, pt-pr-code.h, pt-select.cc, pt-select.h, pt-spmd.cc, pt-spmd.h, pt-stmt.cc, pt-stmt.h, pt-tm-const.cc, pt-tm-const.h, pt-unop.cc, pt-unop.h, pt-vm-eval.cc, pt-walk.cc, pt-walk.h, pt.cc, pt.h, token.cc, token.h, Range.cc, Range.h, idx-vector.cc, idx-vector.h, range-fwd.h, CollocWt.cc, CollocWt.h, aepbalance.cc, aepbalance.h, chol.cc, chol.h, gepbalance.cc, gepbalance.h, gsvd.cc, gsvd.h, hess.cc, hess.h, lo-mappers.cc, lo-mappers.h, lo-specfun.cc, lo-specfun.h, lu.cc, lu.h, oct-convn.cc, oct-convn.h, oct-fftw.cc, oct-fftw.h, oct-norm.cc, oct-norm.h, oct-rand.cc, oct-rand.h, oct-spparms.cc, oct-spparms.h, qr.cc, qr.h, qrp.cc, qrp.h, randgamma.cc, randgamma.h, randmtzig.cc, randmtzig.h, randpoisson.cc, randpoisson.h, schur.cc, schur.h, sparse-chol.cc, sparse-chol.h, sparse-lu.cc, sparse-lu.h, sparse-qr.cc, sparse-qr.h, svd.cc, svd.h, child-list.cc, child-list.h, dir-ops.cc, dir-ops.h, file-ops.cc, file-ops.h, file-stat.cc, file-stat.h, lo-sysdep.cc, lo-sysdep.h, lo-sysinfo.cc, lo-sysinfo.h, mach-info.cc, mach-info.h, oct-env.cc, oct-env.h, oct-group.cc, oct-group.h, oct-password.cc, oct-password.h, oct-syscalls.cc, oct-syscalls.h, oct-time.cc, oct-time.h, oct-uname.cc, oct-uname.h, action-container.cc, action-container.h, base-list.h, cmd-edit.cc, cmd-edit.h, cmd-hist.cc, cmd-hist.h, f77-fcn.h, file-info.cc, file-info.h, lo-array-errwarn.cc, lo-array-errwarn.h, lo-hash.cc, lo-hash.h, lo-ieee.h, lo-regexp.cc, lo-regexp.h, lo-utils.cc, lo-utils.h, oct-base64.cc, oct-base64.h, oct-glob.cc, oct-glob.h, oct-inttypes.h, oct-mutex.cc, oct-mutex.h, oct-refcount.h, oct-shlib.cc, oct-shlib.h, oct-sparse.cc, oct-sparse.h, oct-string.h, octave-preserve-stream-state.h, pathsearch.cc, pathsearch.h, quit.cc, quit.h, unwind-prot.cc, unwind-prot.h, url-transfer.cc, url-transfer.h : Use new macros to begin/end C++ namespaces.

author	Rik <rik@octave.org>
date	Thu, 01 Dec 2022 14:23:45 -0800
parents	796f54d4ddbf
children	597f3ee61a48

rev	line source
27923 bd51beb6205e update formatting of copyright notices John W. Eaton <jwe@octave.org> parents: 27919 diff changeset	1 ////////////////////////////////////////////////////////////////////////
bd51beb6205e update formatting of copyright notices John W. Eaton <jwe@octave.org> parents: 27919 diff changeset	2 //
bd51beb6205e update formatting of copyright notices John W. Eaton <jwe@octave.org> parents: 27919 diff changeset	3 // Contour lines for function evaluated on a grid.
bd51beb6205e update formatting of copyright notices John W. Eaton <jwe@octave.org> parents: 27919 diff changeset	4 //
30564 796f54d4ddbf update Octave Project Developers copyright for the new year John W. Eaton <jwe@octave.org> parents: 29961 diff changeset	5 // Copyright (C) 2001-2022 The Octave Project Developers
27923 bd51beb6205e update formatting of copyright notices John W. Eaton <jwe@octave.org> parents: 27919 diff changeset	6 //
bd51beb6205e update formatting of copyright notices John W. Eaton <jwe@octave.org> parents: 27919 diff changeset	7 // See the file COPYRIGHT.md in the top-level directory of this
bd51beb6205e update formatting of copyright notices John W. Eaton <jwe@octave.org> parents: 27919 diff changeset	8 // distribution or <https://octave.org/copyright/>.
bd51beb6205e update formatting of copyright notices John W. Eaton <jwe@octave.org> parents: 27919 diff changeset	9 //
bd51beb6205e update formatting of copyright notices John W. Eaton <jwe@octave.org> parents: 27919 diff changeset	10 // Adapted to an oct file from the stand alone contourl by Victro Munoz
bd51beb6205e update formatting of copyright notices John W. Eaton <jwe@octave.org> parents: 27919 diff changeset	11 // Copyright (C) 2004 Victor Munoz
bd51beb6205e update formatting of copyright notices John W. Eaton <jwe@octave.org> parents: 27919 diff changeset	12 //
bd51beb6205e update formatting of copyright notices John W. Eaton <jwe@octave.org> parents: 27919 diff changeset	13 // Based on contour plot routine (plcont.c) in PLPlot package
bd51beb6205e update formatting of copyright notices John W. Eaton <jwe@octave.org> parents: 27919 diff changeset	14 // http://plplot.org/
bd51beb6205e update formatting of copyright notices John W. Eaton <jwe@octave.org> parents: 27919 diff changeset	15 //
bd51beb6205e update formatting of copyright notices John W. Eaton <jwe@octave.org> parents: 27919 diff changeset	16 // Copyright (C) 1995, 2000, 2001 Maurice LeBrun
bd51beb6205e update formatting of copyright notices John W. Eaton <jwe@octave.org> parents: 27919 diff changeset	17 // Copyright (C) 2000, 2002 Joao Cardoso
bd51beb6205e update formatting of copyright notices John W. Eaton <jwe@octave.org> parents: 27919 diff changeset	18 // Copyright (C) 2000, 2001, 2002, 2004 Alan W. Irwin
bd51beb6205e update formatting of copyright notices John W. Eaton <jwe@octave.org> parents: 27919 diff changeset	19 // Copyright (C) 2004 Andrew Ross
bd51beb6205e update formatting of copyright notices John W. Eaton <jwe@octave.org> parents: 27919 diff changeset	20 //
bd51beb6205e update formatting of copyright notices John W. Eaton <jwe@octave.org> parents: 27919 diff changeset	21 //
bd51beb6205e update formatting of copyright notices John W. Eaton <jwe@octave.org> parents: 27919 diff changeset	22 // This file is part of Octave.
bd51beb6205e update formatting of copyright notices John W. Eaton <jwe@octave.org> parents: 27919 diff changeset	23 //
bd51beb6205e update formatting of copyright notices John W. Eaton <jwe@octave.org> parents: 27919 diff changeset	24 // Octave is free software: you can redistribute it and/or modify it
bd51beb6205e update formatting of copyright notices John W. Eaton <jwe@octave.org> parents: 27919 diff changeset	25 // under the terms of the GNU General Public License as published by
bd51beb6205e update formatting of copyright notices John W. Eaton <jwe@octave.org> parents: 27919 diff changeset	26 // the Free Software Foundation, either version 3 of the License, or
bd51beb6205e update formatting of copyright notices John W. Eaton <jwe@octave.org> parents: 27919 diff changeset	27 // (at your option) any later version.
bd51beb6205e update formatting of copyright notices John W. Eaton <jwe@octave.org> parents: 27919 diff changeset	28 //
bd51beb6205e update formatting of copyright notices John W. Eaton <jwe@octave.org> parents: 27919 diff changeset	29 // Octave is distributed in the hope that it will be useful, but
bd51beb6205e update formatting of copyright notices John W. Eaton <jwe@octave.org> parents: 27919 diff changeset	30 // WITHOUT ANY WARRANTY; without even the implied warranty of
bd51beb6205e update formatting of copyright notices John W. Eaton <jwe@octave.org> parents: 27919 diff changeset	31 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
bd51beb6205e update formatting of copyright notices John W. Eaton <jwe@octave.org> parents: 27919 diff changeset	32 // GNU General Public License for more details.
bd51beb6205e update formatting of copyright notices John W. Eaton <jwe@octave.org> parents: 27919 diff changeset	33 //
bd51beb6205e update formatting of copyright notices John W. Eaton <jwe@octave.org> parents: 27919 diff changeset	34 // You should have received a copy of the GNU General Public License
bd51beb6205e update formatting of copyright notices John W. Eaton <jwe@octave.org> parents: 27919 diff changeset	35 // along with Octave; see the file COPYING. If not, see
bd51beb6205e update formatting of copyright notices John W. Eaton <jwe@octave.org> parents: 27919 diff changeset	36 // <https://www.gnu.org/licenses/>.
bd51beb6205e update formatting of copyright notices John W. Eaton <jwe@octave.org> parents: 27919 diff changeset	37 //
bd51beb6205e update formatting of copyright notices John W. Eaton <jwe@octave.org> parents: 27919 diff changeset	38 ////////////////////////////////////////////////////////////////////////
6257 44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	39
21724 aba2e6293dd8 use "#if ..." consistently instead of "#ifdef" and "#ifndef" John W. Eaton <jwe@octave.org> parents: 21562 diff changeset	40 #if defined (HAVE_CONFIG_H)
21301 40de9f8f23a6 Use '#include "config.h"' rather than <config.h>. Rik <rik@octave.org> parents: 21200 diff changeset	41 # include "config.h"
6257 44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	42 #endif
44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	43
23455 73ff72d3d603 maint: Eliminate <cfloat.h> header from libinterp files Rik <rik@octave.org> parents: 23220 diff changeset	44 #include <limits>
6257 44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	45
15039 e753177cde93 maint: Move non-dynamically linked functions from DLD-FUNCTIONS/ to corefcn/ directory Rik <rik@octave.org> parents: 14501 diff changeset	46 #include "defun.h"
23455 73ff72d3d603 maint: Eliminate <cfloat.h> header from libinterp files Rik <rik@octave.org> parents: 23220 diff changeset	47 #include "ov.h"
6257 44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	48
31605 e88a07dec498 maint: Use macros to begin/end C++ namespaces. Rik <rik@octave.org> parents: 30564 diff changeset	49 OCTAVE_BEGIN_NAMESPACE(octave)
29958 32c3a5805893 move DEFUN and DEFMETHOD functions inside octave namespace John W. Eaton <jwe@octave.org> parents: 29359 diff changeset	50
20802 8bb38ba1bad6 eliminate return statements after calls to print_usage John W. Eaton <jwe@octave.org> parents: 20667 diff changeset	51 // FIXME: this looks like trouble...
6257 44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	52 static Matrix this_contour;
44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	53 static Matrix contourc;
44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	54 static int elem;
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 // 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	57 #define CONTOUR_QUANT 50
44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	58
7042 e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	59 // Add a coordinate point (x,y) to this_contour.
6257 44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	60 static void
7042 e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	61 add_point (double x, double y)
6257 44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	62 {
44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	63 if (elem % CONTOUR_QUANT == 0)
44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	64 this_contour = this_contour.append (Matrix (2, CONTOUR_QUANT, 0));
44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	65
29278 7bfc454b9e08 contourc.m: Overhaul function. Rik <rik@octave.org> parents: 27923 diff changeset	66 this_contour(0, elem) = x;
7bfc454b9e08 contourc.m: Overhaul function. Rik <rik@octave.org> parents: 27923 diff changeset	67 this_contour(1, elem) = y;
6257 44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	68 elem++;
44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	69 }
44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	70
7042 e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	71 // Add contents of current contour to contourc.
6257 44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	72 // this_contour.cols () - 1;
44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	73 static void
7042 e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	74 end_contour (void)
6257 44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	75 {
44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	76 if (elem > 2)
44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	77 {
29278 7bfc454b9e08 contourc.m: Overhaul function. Rik <rik@octave.org> parents: 27923 diff changeset	78 this_contour(1, 0) = elem - 1;
6257 44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	79 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	80 }
7042 e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	81
6257 44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	82 this_contour = Matrix ();
44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	83 elem = 0;
44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	84 }
44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	85
7042 e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	86 // 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	87
44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	88 static void
7042 e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	89 start_contour (double lvl, double x, double y)
6257 44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	90 {
7042 e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	91 end_contour ();
6257 44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	92 this_contour.resize (2, 0);
7042 e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	93 add_point (lvl, 0);
e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	94 add_point (x, y);
6257 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
44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	97 static void
7042 e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	98 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	99 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	100 unsigned int start_edge, bool first, charMatrix& mark)
6257 44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	101 {
7042 e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	102 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	103 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	104
704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	105 // 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	106 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	107 && 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	108 {
6257 44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	109
15867 704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	110 //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	111 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	112 px[1] = px[2] = X(c+1);
6257 44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	113
15867 704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	114 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	115 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	116
704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	117 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	118 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	119 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	120 pz[0] = Z(r, c) - lvl;
6257 44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	121
15867 704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	122 // 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	123 //
704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	124 // 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	125 // \| \| \| \|
704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	126 // \| \| 3 1
704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	127 // \| \| \| \|
704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	128 // 3-----2 .-2-.
6257 44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	129
15867 704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	130 // 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	131 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	132
704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	133 // 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	134 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	135 {
704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	136 // 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	137 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	138 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	139 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	140 }
6257 44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	141
15867 704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	142 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	143 break;
704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	144
704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	145 // 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	146 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	147
15867 704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	148 // 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	149 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	150 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	151
704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	152 // 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	153 if (first)
704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	154 {
704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	155 tmp = fabs (pz[pt[1]]) / fabs (pz[pt[0]]);
6257 44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	156
29961 7d6709900da7 eliminate octave:: namespace tags in DEFUN and DEFMETHOD and more John W. Eaton <jwe@octave.org> parents: 29958 diff changeset	157 if (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	158 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	159 else
704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	160 {
704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	161 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	162 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	163 }
7042 e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	164
15867 704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	165 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	166 first = false;
704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	167 }
6257 44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	168
15867 704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	169 // Find stop edge.
17787 175b392e91fe Use GNU style coding conventions for code in libinterp/ Rik <rik@octave.org> parents: 17744 diff changeset	170 // 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	171 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	172 {
704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	173 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	174 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	175 else
704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	176 stop_edge = (start_edge - k) % 4;
7042 e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	177
15867 704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	178 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	179 break;
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
704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	182 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	183 pt[1] = (pt[0] + 1) % 4;
7042 e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	184 tmp = fabs (pz[pt[1]]) / fabs (pz[pt[0]]);
e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	185
29961 7d6709900da7 eliminate octave:: namespace tags in DEFUN and DEFMETHOD and more John W. Eaton <jwe@octave.org> parents: 29958 diff changeset	186 if (math::isnan (tmp))
7042 e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	187 ct_x = ct_y = 0.5;
e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	188 else
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 8920 diff changeset	189 {
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 8920 diff changeset	190 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	191 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	192 }
7042 e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	193
15867 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 to contour.
704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	195 add_point (ct_x, ct_y);
7042 e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	196
15867 704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	197 // 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	198 mark(r, c) -= static_cast<char> (1 << stop_edge);
6257 44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	199
15867 704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	200 // 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	201 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	202 r--;
704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	203 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	204 c++;
704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	205 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	206 r++;
704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	207 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	208 c--;
7042 e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	209
15867 704e15f8fecd Modify contourc recursion to a loop to avoid stack overflow (bug #37891) Mike Miller <mtmiller@ieee.org> parents: 15220 diff changeset	210 // 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	211 start_edge = (stop_edge + 2) % 4;
7042 e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	212
6257 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
44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	216 static void
7042 e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	217 mark_facets (const Matrix& Z, charMatrix& mark, double lvl)
6257 44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	218 {
7070 7593f8e83a2e [project @ 2007-10-25 20:41:16 by jwe] jwe parents: 7042 diff changeset	219 unsigned int nr = mark.rows ();
7593f8e83a2e [project @ 2007-10-25 20:41:16 by jwe] jwe parents: 7042 diff changeset	220 unsigned int nc = mark.cols ();
7042 e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	221
e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	222 double f[4];
e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	223
7070 7593f8e83a2e [project @ 2007-10-25 20:41:16 by jwe] jwe parents: 7042 diff changeset	224 for (unsigned int c = 0; c < nc; c++)
7593f8e83a2e [project @ 2007-10-25 20:41:16 by jwe] jwe parents: 7042 diff changeset	225 for (unsigned int r = 0; r < nr; r++)
7042 e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	226 {
e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	227 f[0] = Z(r, c) - lvl;
e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	228 f[1] = Z(r, c+1) - lvl;
e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	229 f[3] = Z(r+1, c) - lvl;
e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	230 f[2] = Z(r+1, c+1) - lvl;
e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	231
7070 7593f8e83a2e [project @ 2007-10-25 20:41:16 by jwe] jwe parents: 7042 diff changeset	232 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	233 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	234 f[i] = std::numeric_limits<double>::epsilon ();
7042 e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	235
e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	236 if (f[1] * f[2] < 0)
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 8920 diff changeset	237 mark(r, c) += 2;
7042 e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	238
e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	239 if (f[0] * f[3] < 0)
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 8920 diff changeset	240 mark(r, c) += 8;
7042 e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	241 }
6257 44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	242
7070 7593f8e83a2e [project @ 2007-10-25 20:41:16 by jwe] jwe parents: 7042 diff changeset	243 for (unsigned int r = 0; r < nr; r++)
7593f8e83a2e [project @ 2007-10-25 20:41:16 by jwe] jwe parents: 7042 diff changeset	244 for (unsigned int c = 0; c < nc; c++)
7042 e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	245 {
e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	246 f[0] = Z(r, c) - lvl;
e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	247 f[1] = Z(r, c+1) - lvl;
e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	248 f[3] = Z(r+1, c) - lvl;
e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	249 f[2] = Z(r+1, c+1) - lvl;
e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	250
7070 7593f8e83a2e [project @ 2007-10-25 20:41:16 by jwe] jwe parents: 7042 diff changeset	251 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	252 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	253 f[i] = std::numeric_limits<double>::epsilon ();
7042 e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	254
e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	255 if (f[0] * f[1] < 0)
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 8920 diff changeset	256 mark(r, c) += 1;
7042 e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	257
e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	258 if (f[2] * f[3] < 0)
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 8920 diff changeset	259 mark(r, c) += 4;
7042 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
e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	263 static void
e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	264 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	265 {
7070 7593f8e83a2e [project @ 2007-10-25 20:41:16 by jwe] jwe parents: 7042 diff changeset	266 unsigned int nr = Z.rows ();
7593f8e83a2e [project @ 2007-10-25 20:41:16 by jwe] jwe parents: 7042 diff changeset	267 unsigned int nc = Z.cols ();
7042 e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	268
e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	269 charMatrix mark (nr - 1, nc - 1, 0);
e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	270
e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	271 mark_facets (Z, mark, lvl);
e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	272
e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	273 // Find contours that start at a domain edge.
e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	274
7070 7593f8e83a2e [project @ 2007-10-25 20:41:16 by jwe] jwe parents: 7042 diff changeset	275 for (unsigned int c = 0; c < nc - 1; c++)
6257 44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	276 {
7042 e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	277 // Top.
e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	278 if (mark(0, c) & 1)
e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	279 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	280
e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	281 // Bottom.
e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	282 if (mark(nr - 2, c) & 4)
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 8920 diff changeset	283 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	284 }
7042 e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	285
7070 7593f8e83a2e [project @ 2007-10-25 20:41:16 by jwe] jwe parents: 7042 diff changeset	286 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	287 {
e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	288 // Left.
e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	289 if (mark(r, 0) & 8)
e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	290 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	291
e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	292 // Right.
e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	293 if (mark(r, nc - 2) & 2)
e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	294 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	295 }
e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	296
7070 7593f8e83a2e [project @ 2007-10-25 20:41:16 by jwe] jwe parents: 7042 diff changeset	297 for (unsigned int r = 0; r < nr - 1; r++)
7593f8e83a2e [project @ 2007-10-25 20:41:16 by jwe] jwe parents: 7042 diff changeset	298 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	299 if (mark (r, c) > 0)
e54cc03d53f6 [project @ 2007-10-19 20:43:32 by jwe] jwe parents: 7017 diff changeset	300 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	301 }
44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	302
29958 32c3a5805893 move DEFUN and DEFMETHOD functions inside octave namespace John W. Eaton <jwe@octave.org> parents: 29359 diff changeset	303
15039 e753177cde93 maint: Move non-dynamically linked functions from DLD-FUNCTIONS/ to corefcn/ directory Rik <rik@octave.org> parents: 14501 diff changeset	304 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	305 doc: /* -- texinfo --
29278 7bfc454b9e08 contourc.m: Overhaul function. Rik <rik@octave.org> parents: 27923 diff changeset	306 @deftypefn {} {@var{c} =} __contourc__ (@var{x}, @var{y}, @var{z}, @var{levels})
7bfc454b9e08 contourc.m: Overhaul function. Rik <rik@octave.org> parents: 27923 diff changeset	307 Calculate Z-level contours (isolines).
21966 112b20240c87 move docstrings in C++ files out of C strings and into comments John W. Eaton <jwe@octave.org> parents: 21782 diff changeset	308 @end deftypefn */)
6257 44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	309 {
20802 8bb38ba1bad6 eliminate return statements after calls to print_usage John W. Eaton <jwe@octave.org> parents: 20667 diff changeset	310 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	311 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	312 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	313 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	314
8bb38ba1bad6 eliminate return statements after calls to print_usage John W. Eaton <jwe@octave.org> parents: 20667 diff changeset	315 contourc.resize (2, 0);
8bb38ba1bad6 eliminate return statements after calls to print_usage John W. Eaton <jwe@octave.org> parents: 20667 diff changeset	316
8bb38ba1bad6 eliminate return statements after calls to print_usage John W. Eaton <jwe@octave.org> parents: 20667 diff changeset	317 for (int i = 0; i < L.numel (); i++)
29278 7bfc454b9e08 contourc.m: Overhaul function. Rik <rik@octave.org> parents: 27923 diff changeset	318 cntr (X, Y, Z, L(i));
20802 8bb38ba1bad6 eliminate return statements after calls to print_usage John W. Eaton <jwe@octave.org> parents: 20667 diff changeset	319
8bb38ba1bad6 eliminate return statements after calls to print_usage John W. Eaton <jwe@octave.org> parents: 20667 diff changeset	320 end_contour ();
8bb38ba1bad6 eliminate return statements after calls to print_usage John W. Eaton <jwe@octave.org> parents: 20667 diff changeset	321
8bb38ba1bad6 eliminate return statements after calls to print_usage John W. Eaton <jwe@octave.org> parents: 20667 diff changeset	322 return octave_value (contourc);
6257 44c91c5dfe1d [project @ 2007-01-30 19:16:52 by jwe] jwe parents: diff changeset	323 }
12805 3641167e5b75 codesprint: .cc helper functions do not need tests Rik <octave@nomad.inbox5.com>* parents: 11586 diff changeset	324
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 ## 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	327 %!assert (1)
3641167e5b75 codesprint: .cc helper functions do not need tests Rik <octave@nomad.inbox5.com>* parents: 11586 diff changeset	328 */
29958 32c3a5805893 move DEFUN and DEFMETHOD functions inside octave namespace John W. Eaton <jwe@octave.org> parents: 29359 diff changeset	329
31605 e88a07dec498 maint: Use macros to begin/end C++ namespaces. Rik <rik@octave.org> parents: 30564 diff changeset	330 OCTAVE_END_NAMESPACE(octave)

Mercurial > octave

annotate libinterp/corefcn/__contourc__.cc @ 31605:e88a07dec498 stable

annotate libinterp/corefcn/contourc.cc @ 31605:e88a07dec498 stable