Mercurial > octave
view scripts/plot/util/zoom.m @ 22302:1c4cd12987f5
Use Octave syntax in graphics demos.
* inputdlg.m, listdlg.m, waitbar.m, autumn.m, bone.m, cool.m, copper.m,
cubehelix.m, flag.m, gray.m, hot.m, hsv.m, jet.m, lines.m, ocean.m, pink.m,
prism.m, rainbow.m, rgbplot.m, spring.m, summer.m, viridis.m, white.m,
winter.m, annotation.m, axis.m, clabel.m, daspect.m, datetick.m, grid.m,
legend.m, lighting.m, material.m, pbaspect.m, shading.m, text.m, xlim.m,
ylim.m, zlim.m, area.m, bar.m, barh.m, camlight.m, colorbar.m, comet.m,
comet3.m, contour.m, contour3.m, contourf.m, cylinder.m, ellipsoid.m,
errorbar.m, ezcontour.m, ezcontourf.m, ezmesh.m, ezmeshc.m, ezplot.m,
ezplot3.m, ezsurf.m, ezsurfc.m, feather.m, fill.m, fplot.m, isocaps.m,
isonormals.m, isosurface.m, light.m, line.m, loglog.m, loglogerr.m, mesh.m,
meshc.m, meshz.m, pareto.m, patch.m, pcolor.m, pie.m, pie3.m, plot.m, plot3.m,
plotmatrix.m, plotyy.m, polar.m, quiver.m, quiver3.m, rectangle.m, ribbon.m,
rose.m, scatter.m, scatter3.m, semilogx.m, semilogxerr.m, semilogy.m,
semilogyerr.m, shrinkfaces.m, slice.m, smooth3.m, sombrero.m, stairs.m, stem.m,
stem3.m, stemleaf.m, surf.m, surfc.m, surfl.m, surfnorm.m, tetramesh.m,
trimesh.m, triplot.m, trisurf.m, waterfall.m, copyobj.m, hold.m, linkaxes.m,
linkprop.m, printd.m, refreshdata.m, subplot.m, zoom.m, pcr.m, dump_demos.m:
Use Octave syntax in graphics demos.
author | Rik <rik@octave.org> |
---|---|
date | Mon, 15 Aug 2016 15:15:30 -0700 |
parents | ffad2baa90f7 |
children | bac0d6f07a3e |
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## Copyright (C) 2014-2015 John W. Eaton ## ## This file is part of Octave. ## ## Octave is free software; you can redistribute it and/or modify it ## under the terms of the GNU General Public License as published by ## the Free Software Foundation; either version 3 of the License, or (at ## your option) any later version. ## ## Octave is distributed in the hope that it will be useful, but ## WITHOUT ANY WARRANTY; without even the implied warranty of ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU ## General Public License for more details. ## ## You should have received a copy of the GNU General Public License ## along with Octave; see the file COPYING. If not, see ## <http://www.gnu.org/licenses/>. ## -*- texinfo -*- ## @deftypefn {} {} zoom ## @deftypefnx {} {} zoom (@var{factor}) ## @deftypefnx {} {} zoom on ## @deftypefnx {} {} zoom off ## @deftypefnx {} {} zoom xon ## @deftypefnx {} {} zoom yon ## @deftypefnx {} {} zoom out ## @deftypefnx {} {} zoom reset ## @deftypefnx {} {} zoom (@var{hfig}, @var{option}) ## Zoom the current axes object or control the interactive zoom mode of a ## figure in the GUI. ## ## Given a numeric argument greater than zero, zoom by the given factor. If ## the zoom factor is greater than one, zoom in on the plot. If the factor ## is less than one, zoom out. If the zoom factor is a two- or three-element ## vector, then the elements specify the zoom factors for the x, y, and z ## axes respectively. ## ## Given the option @qcode{"on"} or @qcode{"off"}, set the interactive zoom ## mode on or off. ## ## With no arguments, toggle the current zoom mode on or off. ## ## Given the option @qcode{"xon"} or @qcode{"yon"}, enable zoom mode for the ## x or y-axis only. ## ## Given the option @qcode{"out"}, zoom to the initial zoom setting. ## ## Given the option @qcode{"reset"}, store the current zoom setting so that ## @code{zoom out} will return to this zoom level. ## ## If the first argument @var{hfig} is a figure, then operate on the given ## figure rather than the current figure as returned by @code{gcf}. ## ## @seealso{pan, rotate3d} ## @end deftypefn ## Eventually we need to also support these features: ## @deftypefnx {} {zoom_object_handle =} zoom (@var{hfig}) function zoom (varargin) nargs = nargin; if (nargs > 2) print_usage (); endif if (nargs == 1 && nargout > 0 && isfigure (varargin{1})) error ("zoom: syntax 'handle = zoom (hfig)' not implemented"); endif hfig = NaN; if (nargs == 2) hfig = varargin{1}; if (isfigure (hfig)) varargin(1) = []; nargs -= 1; else error ("zoom: invalid figure handle HFIG"); endif endif if (isnan (hfig)) hfig = gcf (); endif if (nargs == 0) zm = get (hfig, "__zoom_mode__"); if (strcmp (zm.Enable, "on")) zm.Enable = "off"; else zm.Enable = "on"; endif set (hfig, "__zoom_mode__", zm); update_mouse_mode (hfig, zm.Enable); elseif (nargs == 1) arg = varargin{1}; if (isnumeric (arg)) factor = arg; switch (numel (factor)) case 2 xfactor = factor(1); yfactor = factor(2); case 1 xfactor = yfactor = factor; otherwise error ("zoom: invalid factor"); endswitch if (xfactor < 0 || yfactor < 0) error ("zoom: factor must be greater than 1"); elseif (xfactor == 1 && yfactor == 1) return; endif cax = get (hfig, "currentaxes"); if (! isempty (cax)) if (xfactor != 1) if (yfactor != 1) mode = "both"; else mode = "horizontal"; endif else if (yfactor != 1) mode = "vertical"; endif endif __zoom__ (cax, mode, factor); endif elseif (ischar (arg)) switch (arg) case {"on", "off", "xon", "yon"} zm = get (hfig, "__zoom_mode__"); switch (arg) case {"on", "off"} zm.Enable = arg; zm.Motion = "both"; case "xon" zm.Enable = "on"; zm.Motion = "horizontal"; case "yon" zm.Enable = "on"; zm.Motion = "vertical"; endswitch set (hfig, "__zoom_mode__", zm); update_mouse_mode (hfig, arg); case "out" cax = get (hfig, "currentaxes"); if (! isempty (cax)) __zoom__ (cax, "out"); endif case "reset" cax = get (hfig, "currentaxes"); if (! isempty (cax)) __zoom__ (cax, "reset"); endif otherwise error ("zoom: unrecognized option '%s'", arg); endswitch else error ("zoom: wrong type argument '%s'", class (arg)); endif endif endfunction function update_mouse_mode (hfig, arg) if (strcmp (arg, "off")) set (hfig, "__mouse_mode__", "none"); else ## FIXME: Is there a better way other than calling these functions ## to set the other mouse mode Enable fields to "off"? pan ("off"); rotate3d ("off"); set (hfig, "__mouse_mode__", "zoom"); endif endfunction %!demo %! clf; %! sombrero (); %! pause (1); %! ## zoom in by a factor of 2 %! zoom (2); %! pause (1); %! ## return to original zoom level %! zoom out; %! pause (1); %! ## zoom in by a factor of 2 %! zoom (2); %! pause (1); %! ## set this zoom level as the "initial zoom level" %! ## and zoom in some more %! zoom reset; %! zoom (2); %! pause (1); %! ## return to zoom level set by last call to "zoom reset" %! zoom out;