Mercurial > hg > octave-terminal
changeset 8890:ae51d068bbd5
__actual_axis_position__.m: New function to determine position of rendered axes.
author | Ben Abbott <bpabbott@mac.com> |
---|---|
date | Sat, 28 Feb 2009 22:39:33 -0500 |
parents | 665b264b6a50 |
children | d077c590eb88 |
files | scripts/ChangeLog scripts/plot/__actual_axis_position__.m |
diffstat | 2 files changed, 93 insertions(+), 0 deletions(-) [+] |
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--- a/scripts/ChangeLog +++ b/scripts/ChangeLog @@ -1,3 +1,8 @@ +2009-02-28 Ben Abbott <bpabbott@mac.com> + + * plot/__actual_axis_position__.m: Include file missed in prior + changeset. + 2009-02-28 Ben Abbott <bpabbott@mac.com> * plot/print.m, plot/gnuplot_drawnow.m: Add compatible support for
new file mode 100644 --- /dev/null +++ b/scripts/plot/__actual_axis_position__.m @@ -0,0 +1,88 @@ +## Copyright (C) 2009 Ben Abbott +## +## 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 {Function File} {} __actual_axis_position__ (@var{h}) +## @deftypefnx {Function File} {} __actual_axis_position__ (@var{axis_struct}) +## Undocumented internal function. +## @end deftypefn + +## Author: Ben Abbott + +function pos = __actual_axis_position__ (axis_obj) + if (ishandle (axis_obj)) + axis_obj = get (axis_obj); + endif + + ## When using {rltb}margin, Gnuplot does not handle the specified + ## aspect ratio properly, so handle it here. + if (__calc_dimensions__ (axis_obj) == 3) + ## FIXME -- this works for "axis square", but has not been + ## thoroughly tested for other aspect ratios. + aspect_ratio_2d = [max(axis_obj.dataaspectratio(1:2)), ... + axis_obj.dataaspectratio(3)/sqrt(2)]; + else + aspect_ratio_2d = axis_obj.dataaspectratio(1:2); + endif + orig_fig_units = get (axis_obj.parent, "units"); + orig_fig_position = get (axis_obj.parent, "units"); + unwind_protect + set (axis_obj.parent, "units", "pixels") + fig_position = get (axis_obj.parent, "position"); + pos_in_pixels = axis_obj.position .* fig_position([3, 4, 3, 4]); + orig_aspect_ratio_2d = pos_in_pixels(3:4); + rel_aspect_ratio_2d = aspect_ratio_2d ./ orig_aspect_ratio_2d; + rel_aspect_ratio_2d = rel_aspect_ratio_2d ./ max (rel_aspect_ratio_2d); + if (rel_aspect_ratio_2d(1) < rel_aspect_ratio_2d(2)); + dx = (1.0 - rel_aspect_ratio_2d(1)) * pos_in_pixels(3); + pos_in_pixels = pos_in_pixels + dx*[0.5, 0.0, -1.0, 0.0]; + elseif (rel_aspect_ratio_2d(1) > rel_aspect_ratio_2d(2)) + dy = (1.0 - rel_aspect_ratio_2d(2)) * pos_in_pixels(4); + pos_in_pixels = pos_in_pixels + dy*[0.0, 0.5, 0.0, -1.0]; + endif + pos = pos_in_pixels ./ fig_position([3, 4, 3, 4]); + unwind_protect_cleanup + set (axis_obj.parent, "units", orig_fig_units) + set (axis_obj.parent, "units", orig_fig_position) + end_unwind_protect + +endfunction + +function nd = __calc_dimensions__ (obj) + kids = obj.children; + nd = 2; + for i = 1:length (kids) + obj = get (kids(i)); + switch (obj.type) + case {"image", "text"} + ## ignore as they + case {"line", "patch"} + if (! isempty (obj.zdata)) + nd = 3; + endif + case "surface" + nd = 3; + case "hggroup" + obj_nd = __calc_dimensions__ (obj); + if (obj_nd == 3) + nd = 3; + endif + endswitch + endfor +endfunction +