Mercurial > octave
view libinterp/corefcn/__contourc__.cc @ 31771:21f9b34eb893
maint: Eliminate "(void)" in C++ function prototypes/declarations.
* mk-opts.pl, external.txi, embedded.cc, make_int.cc, standalone.cc,
standalonebuiltin.cc, BaseControl.cc, BaseControl.h, ButtonControl.cc,
ButtonControl.h, ButtonGroup.cc, ButtonGroup.h, Canvas.cc, Canvas.h,
CheckBoxControl.cc, CheckBoxControl.h, Container.cc, Container.h,
ContextMenu.cc, ContextMenu.h, EditControl.cc, EditControl.h, Figure.cc,
Figure.h, FigureWindow.cc, FigureWindow.h, GLCanvas.cc, GLCanvas.h,
GenericEventNotify.h, KeyMap.cc, ListBoxControl.cc, ListBoxControl.h,
Logger.cc, Logger.h, Menu.cc, Menu.h, MenuContainer.h, Object.cc, Object.h,
ObjectProxy.cc, ObjectProxy.h, Panel.cc, Panel.h, PopupMenuControl.cc,
PopupMenuControl.h, PushButtonControl.cc, PushButtonControl.h, PushTool.cc,
PushTool.h, RadioButtonControl.cc, RadioButtonControl.h, SliderControl.cc,
SliderControl.h, Table.cc, Table.h, TextControl.cc, TextControl.h, TextEdit.h,
ToggleButtonControl.cc, ToggleButtonControl.h, ToggleTool.cc, ToggleTool.h,
ToolBar.cc, ToolBar.h, ToolBarButton.cc, ToolBarButton.h, gl-select.cc,
gl-select.h, qopengl-functions.h, qt-graphics-toolkit.h, qdialog.cpp,
qfontdialog.cpp, qprintdialog_win.cpp, liboctgui-build-info.h,
liboctgui-build-info.in.cc, color-picker.cc, color-picker.h, command-widget.cc,
command-widget.h, community-news.cc, community-news.h, dialog.cc, dialog.h,
documentation-bookmarks.cc, documentation-bookmarks.h,
documentation-dock-widget.cc, documentation-dock-widget.h, documentation.cc,
documentation.h, dw-main-window.cc, dw-main-window.h,
external-editor-interface.cc, external-editor-interface.h,
files-dock-widget.cc, files-dock-widget.h, find-files-dialog.cc,
find-files-dialog.h, find-files-model.cc, find-files-model.h,
gui-preferences.cc, gui-preferences.h, gui-settings.cc, gui-settings.h,
history-dock-widget.cc, history-dock-widget.h, interpreter-qobject.cc,
interpreter-qobject.h, file-editor-interface.h, file-editor-tab.cc,
file-editor-tab.h, file-editor.cc, file-editor.h, find-dialog.cc,
find-dialog.h, marker.cc, marker.h, octave-qscintilla.cc, octave-qscintilla.h,
octave-txt-lexer.cc, octave-txt-lexer.h, main-window.cc, main-window.h,
news-reader.cc, news-reader.h, octave-dock-widget.cc, octave-dock-widget.h,
octave-qobject.cc, octave-qobject.h, qt-application.cc, qt-application.h,
qt-interpreter-events.cc, qt-interpreter-events.h, release-notes.cc,
release-notes.h, set-path-dialog.cc, set-path-dialog.h, set-path-model.cc,
set-path-model.h, settings-dialog.cc, settings-dialog.h,
shortcuts-tree-widget.cc, shortcuts-tree-widget.h, tab-bar.cc, tab-bar.h,
terminal-dock-widget.cc, terminal-dock-widget.h, variable-editor-model.cc,
variable-editor-model.h, variable-editor.cc, variable-editor.h,
welcome-wizard.cc, welcome-wizard.h, workspace-model.cc, workspace-model.h,
workspace-view.cc, workspace-view.h, build-env.h, Cell.cc, Cell.h,
__contourc__.cc, __magick_read__.cc, auto-shlib.cc, auto-shlib.h,
base-text-renderer.h, bsxfun.cc, c-file-ptr-stream.cc, c-file-ptr-stream.h,
call-stack.cc, call-stack.h, debug.cc, defaults.cc, defaults.h, defun.cc,
display.cc, display.h, dynamic-ld.cc, dynamic-ld.h, environment.cc,
environment.h, error.cc, error.h, errwarn.cc, errwarn.h, event-manager.cc,
event-manager.h, event-queue.cc, event-queue.h, fcn-info.cc, fcn-info.h,
ft-text-renderer.cc, ft-text-renderer.h, genprops.awk, gh-manager.cc,
gh-manager.h, gl-render.cc, gl-render.h, gl2ps-print.cc, graphics-toolkit.h,
graphics.cc, graphics.in.h, gtk-manager.cc, gtk-manager.h, help.cc, help.h,
hook-fcn.h, input.cc, input.h, interpreter-private.cc, interpreter-private.h,
interpreter.cc, interpreter.h, jsondecode.cc, latex-text-renderer.cc,
latex-text-renderer.h, load-path.cc, load-path.h, load-save.cc, load-save.h,
ls-hdf5.cc, ls-hdf5.h, mxarray.h, oct-errno.h, oct-errno.in.cc, oct-fstrm.cc,
oct-fstrm.h, oct-handle.h, oct-hist.cc, oct-hist.h, oct-iostrm.cc,
oct-iostrm.h, oct-map.cc, oct-map.h, oct-opengl.h, oct-prcstrm.cc,
oct-prcstrm.h, oct-procbuf.cc, oct-procbuf.h, oct-process.h, oct-stdstrm.h,
oct-stream.cc, oct-stream.h, oct-strstrm.cc, oct-strstrm.h,
oct-tex-lexer.in.ll, pager.cc, pager.h, pr-flt-fmt.cc, pr-flt-fmt.h,
pr-output.cc, pr-output.h, procstream.cc, procstream.h, settings.cc,
settings.h, sighandlers.cc, sighandlers.h, stack-frame.cc, stack-frame.h,
svd.cc, syminfo.cc, syminfo.h, symrec.cc, symrec.h, symscope.cc, symscope.h,
symtab.cc, symtab.h, sysdep.cc, sysdep.h, text-engine.cc, text-engine.h,
text-renderer.cc, text-renderer.h, toplev.cc, url-handle-manager.cc,
url-handle-manager.h, variables.cc, xpow.cc, __init_fltk__.cc,
__init_gnuplot__.cc, __ode15__.cc, audiodevinfo.cc, gzip.cc,
liboctinterp-build-info.h, liboctinterp-build-info.in.cc,
mk-build-env-features.sh, mk-builtins.pl, cdef-class.cc, cdef-class.h,
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-diag.cc, ov-base-diag.h, ov-base-int.cc,
ov-base-int.h, ov-base-mat.cc, ov-base-mat.h, ov-base-scalar.cc,
ov-base-scalar.h, ov-base-sparse.cc, ov-base-sparse.h, ov-base.cc, ov-base.h,
ov-bool-mat.cc, ov-bool-mat.h, ov-bool-sparse.cc, ov-bool-sparse.h, ov-bool.cc,
ov-bool.h, ov-builtin.cc, ov-builtin.h, ov-cell.cc, ov-cell.h, ov-ch-mat.cc,
ov-ch-mat.h, ov-class.cc, ov-class.h, ov-classdef.cc, ov-classdef.h,
ov-colon.h, ov-complex.cc, ov-complex.h, ov-cs-list.h, ov-cx-diag.cc,
ov-cx-diag.h, ov-cx-mat.cc, ov-cx-mat.h, ov-cx-sparse.cc, ov-cx-sparse.h,
ov-dld-fcn.cc, ov-dld-fcn.h, ov-fcn-handle.cc, ov-fcn-handle.h, ov-fcn.cc,
ov-fcn.h, ov-float.cc, ov-float.h, ov-flt-complex.cc, ov-flt-complex.h,
ov-flt-cx-diag.cc, ov-flt-cx-diag.h, ov-flt-cx-mat.cc, ov-flt-cx-mat.h,
ov-flt-re-diag.cc, ov-flt-re-diag.h, ov-flt-re-mat.cc, ov-flt-re-mat.h,
ov-intx.h, ov-java.cc, ov-java.h, ov-lazy-idx.cc, ov-lazy-idx.h,
ov-legacy-range.cc, ov-legacy-range.h, ov-magic-int.cc, ov-magic-int.h,
ov-mex-fcn.cc, ov-mex-fcn.h, ov-null-mat.cc, ov-null-mat.h, ov-oncleanup.cc,
ov-oncleanup.h, ov-perm.cc, ov-perm.h, ov-range.cc, ov-range.h, ov-re-diag.cc,
ov-re-diag.h, ov-re-mat.cc, ov-re-mat.h, ov-re-sparse.cc, ov-re-sparse.h,
ov-scalar.cc, ov-scalar.h, ov-str-mat.cc, ov-str-mat.h, ov-struct.cc,
ov-struct.h, ov-typeinfo.cc, ov-typeinfo.h, ov-usr-fcn.cc, ov-usr-fcn.h, ov.cc,
ov.h, ovl.cc, ovl.h, octave.cc, octave.h, 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.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.h, pt-cbinop.h, pt-cell.h, pt-check.h,
pt-classdef.cc, pt-classdef.h, pt-cmd.h, pt-colon.h, 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.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-walk.h, pt.cc, pt.h, token.cc, token.h, usage.h, Array-base.cc, Array.h,
CColVector.cc, CColVector.h, CDiagMatrix.cc, CDiagMatrix.h, CMatrix.cc,
CMatrix.h, CNDArray.cc, CNDArray.h, CRowVector.cc, CRowVector.h, CSparse.cc,
CSparse.h, DiagArray2.cc, DiagArray2.h, MArray.cc, MArray.h, MDiagArray2.h,
MSparse.h, MatrixType.cc, MatrixType.h, PermMatrix.cc, PermMatrix.h, Range.cc,
Range.h, Sparse-b.cc, Sparse.cc, Sparse.h, boolMatrix.cc, boolMatrix.h,
boolNDArray.cc, boolNDArray.h, boolSparse.cc, boolSparse.h, chMatrix.h,
chNDArray.h, dColVector.cc, dColVector.h, dDiagMatrix.cc, dDiagMatrix.h,
dMatrix.cc, dMatrix.h, dNDArray.cc, dNDArray.h, dRowVector.cc, dRowVector.h,
dSparse.cc, dSparse.h, dim-vector.cc, dim-vector.h, fCColVector.cc,
fCColVector.h, fCDiagMatrix.cc, fCDiagMatrix.h, fCMatrix.cc, fCMatrix.h,
fCNDArray.cc, fCNDArray.h, fCRowVector.cc, fCRowVector.h, fColVector.cc,
fColVector.h, fDiagMatrix.cc, fDiagMatrix.h, fMatrix.cc, fMatrix.h,
fNDArray.cc, fNDArray.h, fRowVector.cc, fRowVector.h, idx-vector.cc,
idx-vector.h, intNDArray.cc, intNDArray.h, liboctave-build-info.h,
liboctave-build-info.in.cc, CollocWt.cc, CollocWt.h, DAE.h, DAEFunc.h, DAERT.h,
DAERTFunc.h, DASPK.cc, DASPK.h, DASRT.cc, DASRT.h, DASSL.cc, DASSL.h, DET.h,
EIG.h, LSODE.cc, LSODE.h, ODE.h, ODEFunc.h, ODES.h, ODESFunc.h, Quad.h,
aepbalance.cc, aepbalance.h, base-dae.h, base-de.h, chol.cc, chol.h,
eigs-base.cc, fEIG.h, gepbalance.h, gsvd.cc, gsvd.h, hess.h, lu.cc, lu.h,
oct-fftw.cc, oct-fftw.h, oct-rand.cc, oct-rand.h, oct-spparms.cc,
oct-spparms.h, qr.cc, qr.h, qrp.cc, qrp.h, randmtzig.cc, randmtzig.h, 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.h, base-list.h, caseless-str.h, cmd-edit.cc, cmd-edit.h,
cmd-hist.cc, cmd-hist.h, data-conv.cc, file-info.h, glob-match.cc,
glob-match.h, kpse.cc, kpse.h, lo-array-errwarn.cc, lo-array-errwarn.h,
lo-hash.cc, lo-hash.h, lo-ieee.cc, lo-ieee.h, lo-regexp.cc, lo-regexp.h,
oct-inttypes.cc, oct-inttypes.h, oct-mutex.cc, oct-mutex.h, oct-refcount.h,
oct-shlib.cc, oct-shlib.h, oct-sort.cc, oct-sort.h, oct-sparse.cc,
octave-preserve-stream-state.h, pathsearch.cc, pathsearch.h, quit.cc,
singleton-cleanup.cc, singleton-cleanup.h, str-vec.cc, str-vec.h,
unwind-prot.cc, unwind-prot.h, url-transfer.cc, url-transfer.h, version.cc,
version.in.h, cxx-signal-helpers.cc, acinclude.m4, main-cli.cc, main-gui.cc,
main.in.cc, mkoctfile.in.cc, octave-build-info.h, octave-build-info.in.cc,
octave-config.in.cc, octave-svgconvert.cc, shared-fcns.h:
maint: Eliminate "(void)" in C++ function prototypes/declarations.
author | Rik <rik@octave.org> |
---|---|
date | Tue, 24 Jan 2023 17:19:44 -0800 |
parents | 597f3ee61a48 |
children | 2e484f9f1f18 |
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//////////////////////////////////////////////////////////////////////// // // Contour lines for function evaluated on a grid. // // Copyright (C) 2001-2023 The Octave Project Developers // // See the file COPYRIGHT.md in the top-level directory of this // distribution or <https://octave.org/copyright/>. // // Adapted to an oct file from the stand alone contourl by Victro Munoz // Copyright (C) 2004 Victor Munoz // // Based on contour plot routine (plcont.c) in PLPlot package // http://plplot.org/ // // Copyright (C) 1995, 2000, 2001 Maurice LeBrun // Copyright (C) 2000, 2002 Joao Cardoso // Copyright (C) 2000, 2001, 2002, 2004 Alan W. Irwin // Copyright (C) 2004 Andrew Ross // // // This file is part of Octave. // // Octave is free software: you can redistribute it and/or modify it // under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // // Octave is distributed in the hope that it will be useful, but // WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // // You should have received a copy of the GNU General Public License // along with Octave; see the file COPYING. If not, see // <https://www.gnu.org/licenses/>. // //////////////////////////////////////////////////////////////////////// #if defined (HAVE_CONFIG_H) # include "config.h" #endif #include <limits> #include "defun.h" #include "ov.h" OCTAVE_BEGIN_NAMESPACE(octave) // FIXME: this looks like trouble... static Matrix this_contour; static Matrix contourc; static int elem; // This is the quanta in which we increase this_contour. #define CONTOUR_QUANT 50 // Add a coordinate point (x,y) to this_contour. static void add_point (double x, double y) { if (elem % CONTOUR_QUANT == 0) this_contour = this_contour.append (Matrix (2, CONTOUR_QUANT, 0)); this_contour(0, elem) = x; this_contour(1, elem) = y; elem++; } // Add contents of current contour to contourc. // this_contour.cols () - 1; static void end_contour () { if (elem > 2) { this_contour(1, 0) = elem - 1; contourc = contourc.append (this_contour.extract_n (0, 0, 2, elem)); } this_contour = Matrix (); elem = 0; } // Start a new contour, and add contents of current one to contourc. static void start_contour (double lvl, double x, double y) { end_contour (); this_contour.resize (2, 0); add_point (lvl, 0); add_point (x, y); } static void drawcn (const RowVector& X, const RowVector& Y, const Matrix& Z, double lvl, int r, int c, double ct_x, double ct_y, unsigned int start_edge, bool first, charMatrix& mark) { double px[4], py[4], pz[4], tmp; unsigned int stop_edge, pt[2]; // Continue while next facet is not done yet. while (r >= 0 && c >= 0 && r < mark.rows () && c < mark.cols () && mark(r, c) > 0) { //get x, y, and z - lvl for current facet px[0] = px[3] = X(c); px[1] = px[2] = X(c+1); py[0] = py[1] = Y(r); py[2] = py[3] = Y(r+1); pz[3] = Z(r+1, c) - lvl; pz[2] = Z(r+1, c + 1) - lvl; pz[1] = Z(r, c+1) - lvl; pz[0] = Z(r, c) - lvl; // Facet edge and point naming assignment. // // 0-----1 .-0-. // | | | | // | | 3 1 // | | | | // 3-----2 .-2-. // Get mark value of current facet. char id = static_cast<char> (mark(r, c)); // Check startedge s. if (start_edge == 255) { // Find start edge. for (unsigned int k = 0; k < 4; k++) if (static_cast<char> (1 << k) & id) start_edge = k; } if (start_edge == 255) break; // Decrease mark value of current facet for start edge. mark(r, c) -= static_cast<char> (1 << start_edge); // Next point (clockwise). pt[0] = start_edge; pt[1] = (pt[0] + 1) % 4; // Calculate contour segment start if first of contour. if (first) { tmp = fabs (pz[pt[1]]) / fabs (pz[pt[0]]); if (math::isnan (tmp)) ct_x = ct_y = 0.5; else { ct_x = px[pt[0]] + (px[pt[1]] - px[pt[0]])/(1 + tmp); ct_y = py[pt[0]] + (py[pt[1]] - py[pt[0]])/(1 + tmp); } start_contour (lvl, ct_x, ct_y); first = false; } // Find stop edge. // FIXME: perhaps this should use a while loop? for (unsigned int k = 1; k <= 4; k++) { if (start_edge == 0 || start_edge == 2) stop_edge = (start_edge + k) % 4; else stop_edge = (start_edge - k) % 4; if (static_cast<char> (1 << stop_edge) & id) break; } pt[0] = stop_edge; pt[1] = (pt[0] + 1) % 4; tmp = fabs (pz[pt[1]]) / fabs (pz[pt[0]]); if (math::isnan (tmp)) ct_x = ct_y = 0.5; else { ct_x = px[pt[0]] + (px[pt[1]] - px[pt[0]])/(1 + tmp); ct_y = py[pt[0]] + (py[pt[1]] - py[pt[0]])/(1 + tmp); } // Add point to contour. add_point (ct_x, ct_y); // Decrease id value of current facet for start edge. mark(r, c) -= static_cast<char> (1 << stop_edge); // Find next facet. if (stop_edge == 0) r--; else if (stop_edge == 1) c++; else if (stop_edge == 2) r++; else if (stop_edge == 3) c--; // Go to next facet. start_edge = (stop_edge + 2) % 4; } } static void mark_facets (const Matrix& Z, charMatrix& mark, double lvl) { unsigned int nr = mark.rows (); unsigned int nc = mark.cols (); double f[4]; for (unsigned int c = 0; c < nc; c++) for (unsigned int r = 0; r < nr; r++) { f[0] = Z(r, c) - lvl; f[1] = Z(r, c+1) - lvl; f[3] = Z(r+1, c) - lvl; f[2] = Z(r+1, c+1) - lvl; for (unsigned int i = 0; i < 4; i++) if (fabs(f[i]) < std::numeric_limits<double>::epsilon ()) f[i] = std::numeric_limits<double>::epsilon (); if (f[1] * f[2] < 0) mark(r, c) += 2; if (f[0] * f[3] < 0) mark(r, c) += 8; } for (unsigned int r = 0; r < nr; r++) for (unsigned int c = 0; c < nc; c++) { f[0] = Z(r, c) - lvl; f[1] = Z(r, c+1) - lvl; f[3] = Z(r+1, c) - lvl; f[2] = Z(r+1, c+1) - lvl; for (unsigned int i = 0; i < 4; i++) if (fabs(f[i]) < std::numeric_limits<double>::epsilon ()) f[i] = std::numeric_limits<double>::epsilon (); if (f[0] * f[1] < 0) mark(r, c) += 1; if (f[2] * f[3] < 0) mark(r, c) += 4; } } static void cntr (const RowVector& X, const RowVector& Y, const Matrix& Z, double lvl) { unsigned int nr = Z.rows (); unsigned int nc = Z.cols (); charMatrix mark (nr - 1, nc - 1, 0); mark_facets (Z, mark, lvl); // Find contours that start at a domain edge. for (unsigned int c = 0; c < nc - 1; c++) { // Top. if (mark(0, c) & 1) drawcn (X, Y, Z, lvl, 0, c, 0.0, 0.0, 0, true, mark); // Bottom. if (mark(nr - 2, c) & 4) drawcn (X, Y, Z, lvl, nr - 2, c, 0.0, 0.0, 2, true, mark); } for (unsigned int r = 0; r < nr - 1; r++) { // Left. if (mark(r, 0) & 8) drawcn (X, Y, Z, lvl, r, 0, 0.0, 0.0, 3, true, mark); // Right. if (mark(r, nc - 2) & 2) drawcn (X, Y, Z, lvl, r, nc - 2, 0.0, 0.0, 1, true, mark); } for (unsigned int r = 0; r < nr - 1; r++) for (unsigned int c = 0; c < nc - 1; c++) if (mark (r, c) > 0) drawcn (X, Y, Z, lvl, r, c, 0.0, 0.0, 255, true, mark); } DEFUN (__contourc__, args, , doc: /* -*- texinfo -*- @deftypefn {} {@var{c} =} __contourc__ (@var{x}, @var{y}, @var{z}, @var{levels}) Calculate Z-level contours (isolines). @end deftypefn */) { RowVector X = args(0).row_vector_value (); RowVector Y = args(1).row_vector_value (); Matrix Z = args(2).matrix_value (); RowVector L = args(3).row_vector_value (); contourc.resize (2, 0); for (int i = 0; i < L.numel (); i++) cntr (X, Y, Z, L(i)); end_contour (); return octave_value (contourc); } /* ## No test needed for internal helper function. %!assert (1) */ OCTAVE_END_NAMESPACE(octave)