Mercurial > octave-nkf
view scripts/plot/draw/isonormals.m @ 17572:7bb76a22cde1
maint: Split scripts/plot directory into 4 pieces.
scripts/gui : user-interface functions
scripts/plot/appearance : functions controlling plot appearance
scripts/plot/draw : plotting functions which produce graphs
scripts/plot/util : low-level plotting functions and utilities.
* scripts/gui/guidata.m, scripts/gui/guihandles.m, scripts/gui/module.mk,
scripts/gui/private/__file_filter__.m,
scripts/gui/private/__fltk_file_filter__.m,
scripts/gui/private/__is_function__.m, scripts/gui/private/__uigetdir_fltk__.m,
scripts/gui/private/__uigetfile_fltk__.m,
scripts/gui/private/__uiobject_split_args__.m,
scripts/gui/private/__uiputfile_fltk__.m, scripts/gui/uicontextmenu.m,
scripts/gui/uicontrol.m, scripts/gui/uigetdir.m, scripts/gui/uigetfile.m,
scripts/gui/uimenu.m, scripts/gui/uipanel.m, scripts/gui/uipushtool.m,
scripts/gui/uiputfile.m, scripts/gui/uiresume.m, scripts/gui/uitoggletool.m,
scripts/gui/uitoolbar.m, scripts/gui/uiwait.m, scripts/gui/waitbar.m,
scripts/gui/waitforbuttonpress.m: Moved from scripts/plot to scripts/gui
* scripts/plot/appearance/__clabel__.m,
scripts/plot/appearance/__getlegenddata__.m, scripts/plot/appearance/axis.m,
scripts/plot/appearance/box.m, scripts/plot/appearance/caxis.m,
scripts/plot/appearance/clabel.m, scripts/plot/appearance/daspect.m,
scripts/plot/appearance/diffuse.m, scripts/plot/appearance/grid.m,
scripts/plot/appearance/gtext.m, scripts/plot/appearance/hidden.m,
scripts/plot/appearance/legend.m,
scripts/plot/appearance/orient.m, scripts/plot/appearance/pbaspect.m,
scripts/plot/appearance/private/__axis_label__.m,
scripts/plot/appearance/private/__axis_limits__.m,
scripts/plot/appearance/shading.m, scripts/plot/appearance/specular.m,
scripts/plot/appearance/text.m, scripts/plot/appearance/title.m,
scripts/plot/appearance/view.m, scripts/plot/appearance/whitebg.m,
scripts/plot/appearance/xlabel.m, scripts/plot/appearance/xlim.m,
scripts/plot/appearance/ylabel.m, scripts/plot/appearance/ylim.m,
scripts/plot/appearance/zlabel.m, scripts/plot/appearance/zlim.m:
Moved from scripts/plot to subdir appearance.
* scripts/plot/draw/area.m, scripts/plot/draw/bar.m, scripts/plot/draw/barh.m,
scripts/plot/draw/colorbar.m, scripts/plot/draw/comet.m,
scripts/plot/draw/comet3.m, scripts/plot/draw/compass.m,
scripts/plot/draw/contour.m, scripts/plot/draw/contour3.m,
scripts/plot/draw/contourc.m, scripts/plot/draw/contourf.m,
scripts/plot/draw/cylinder.m, scripts/plot/draw/ellipsoid.m,
scripts/plot/draw/errorbar.m, scripts/plot/draw/ezcontour.m,
scripts/plot/draw/ezcontourf.m, scripts/plot/draw/ezmesh.m,
scripts/plot/draw/ezmeshc.m, scripts/plot/draw/ezplot.m,
scripts/plot/draw/ezplot3.m, scripts/plot/draw/ezpolar.m,
scripts/plot/draw/ezsurf.m, scripts/plot/draw/ezsurfc.m,
scripts/plot/draw/feather.m, scripts/plot/draw/fill.m,
scripts/plot/draw/fplot.m, scripts/plot/draw/hist.m,
scripts/plot/draw/isocolors.m, scripts/plot/draw/isonormals.m,
scripts/plot/draw/isosurface.m, scripts/plot/draw/line.m,
scripts/plot/draw/loglog.m, scripts/plot/draw/loglogerr.m,
scripts/plot/draw/mesh.m, scripts/plot/draw/meshc.m, scripts/plot/draw/meshz.m,
scripts/plot/draw/pareto.m,
scripts/plot/draw/patch.m, scripts/plot/draw/pcolor.m,
scripts/plot/draw/peaks.m, scripts/plot/draw/pie.m, scripts/plot/draw/pie3.m,
scripts/plot/draw/plot.m, scripts/plot/draw/plot3.m,
scripts/plot/draw/plotmatrix.m, scripts/plot/draw/plotyy.m,
scripts/plot/draw/polar.m, scripts/plot/draw/private/__add_datasource__.m,
scripts/plot/draw/private/__bar__.m, scripts/plot/draw/private/__contour__.m,
scripts/plot/draw/private/__errcomm__.m,
scripts/plot/draw/private/__errplot__.m,
scripts/plot/draw/private/__ezplot__.m,
scripts/plot/draw/private/__interp_cube__.m,
scripts/plot/draw/private/__line__.m,
scripts/plot/draw/private/__marching_cube__.m,
scripts/plot/draw/private/__patch__.m, scripts/plot/draw/private/__pie__.m,
scripts/plot/draw/private/__plt__.m, scripts/plot/draw/private/__quiver__.m,
scripts/plot/draw/private/__scatter__.m, scripts/plot/draw/private/__stem__.m,
scripts/plot/draw/quiver.m, scripts/plot/draw/quiver3.m,
scripts/plot/draw/rectangle.m, scripts/plot/draw/ribbon.m,
scripts/plot/draw/rose.m, scripts/plot/draw/scatter.m,
scripts/plot/draw/scatter3.m, scripts/plot/draw/semilogx.m,
scripts/plot/draw/semilogxerr.m, scripts/plot/draw/semilogy.m,
scripts/plot/draw/semilogyerr.m, scripts/plot/draw/shrinkfaces.m,
scripts/plot/draw/slice.m, scripts/plot/draw/sombrero.m,
scripts/plot/draw/sphere.m, scripts/plot/draw/stairs.m,
scripts/plot/draw/stem.m, scripts/plot/draw/stem3.m,
scripts/plot/draw/stemleaf.m, scripts/plot/draw/surf.m,
scripts/plot/draw/surface.m, scripts/plot/draw/surfc.m,
scripts/plot/draw/surfl.m, scripts/plot/draw/surfnorm.m,
scripts/plot/draw/tetramesh.m, scripts/plot/draw/trimesh.m,
scripts/plot/draw/triplot.m, scripts/plot/draw/trisurf.m,
scripts/plot/draw/waterfall.m: Moved from plot/ to subdir draw.
* scripts/plot/util/__actual_axis_position__.m,
scripts/plot/util/__default_plot_options__.m,
scripts/plot/util/__gnuplot_drawnow__.m,
scripts/plot/util/__next_line_color__.m,
scripts/plot/util/__next_line_style__.m,
scripts/plot/util/__plt_get_axis_arg__.m, scripts/plot/util/__pltopt__.m,
scripts/plot/util/allchild.m, scripts/plot/util/ancestor.m,
scripts/plot/util/axes.m, scripts/plot/util/cla.m, scripts/plot/util/clf.m,
scripts/plot/util/close.m, scripts/plot/util/closereq.m,
scripts/plot/util/colstyle.m, scripts/plot/util/copyobj.m,
scripts/plot/util/figure.m, scripts/plot/util/findall.m,
scripts/plot/util/findfigs.m, scripts/plot/util/findobj.m,
scripts/plot/util/gca.m, scripts/plot/util/gcbf.m, scripts/plot/util/gcbo.m,
scripts/plot/util/gcf.m, scripts/plot/util/gco.m, scripts/plot/util/ginput.m,
scripts/plot/util/gnuplot_binary.in, scripts/plot/util/graphics_toolkit.m,
scripts/plot/util/hdl2struct.m, scripts/plot/util/hggroup.m,
scripts/plot/util/hold.m, scripts/plot/util/isaxes.m,
scripts/plot/util/isfigure.m, scripts/plot/util/ishghandle.m,
scripts/plot/util/ishold.m, scripts/plot/util/isprop.m,
scripts/plot/util/linkprop.m, scripts/plot/util/meshgrid.m,
scripts/plot/util/ndgrid.m,
scripts/plot/util/newplot.m, scripts/plot/util/print.m,
scripts/plot/util/printd.m, scripts/plot/util/private/__add_default_menu__.m,
scripts/plot/util/private/__fltk_ginput__.m,
scripts/plot/util/private/__fltk_print__.m,
scripts/plot/util/private/__ghostscript__.m,
scripts/plot/util/private/__gnuplot_get_var__.m,
scripts/plot/util/private/__gnuplot_ginput__.m,
scripts/plot/util/private/__gnuplot_has_feature__.m,
scripts/plot/util/private/__gnuplot_has_terminal__.m,
scripts/plot/util/private/__gnuplot_open_stream__.m,
scripts/plot/util/private/__gnuplot_print__.m,
scripts/plot/util/private/__gnuplot_version__.m,
scripts/plot/util/private/__go_draw_axes__.m,
scripts/plot/util/private/__go_draw_figure__.m,
scripts/plot/util/private/__print_parse_opts__.m,
scripts/plot/util/private/__tight_eps_bbox__.m, scripts/plot/util/refresh.m,
scripts/plot/util/refreshdata.m, scripts/plot/util/saveas.m,
scripts/plot/util/shg.m, scripts/plot/util/struct2hdl.m,
scripts/plot/util/subplot.m: Moved from plot to subdir util.
* etc/HACKING: Updated directory structure info.
* scripts/Makefile.am, scripts/plot/appearance/module.mk,
scripts/plot/draw/module.mk, scripts/plot/util/module.mk:
Added new directories to build system.
author | Rik <rik@octave.org> |
---|---|
date | Fri, 04 Oct 2013 17:09:08 -0700 |
parents | scripts/plot/isonormals.m@bc924baa2c4e |
children | d63878346099 |
line wrap: on
line source
## Copyright (C) 2009-2012 Martin Helm ## ## 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} {[@var{n}] =} isonormals (@var{val}, @var{v}) ## @deftypefnx {Function File} {[@var{n}] =} isonormals (@var{val}, @var{p}) ## @deftypefnx {Function File} {[@var{n}] =} isonormals (@var{x}, @var{y}, @var{z}, @var{val}, @var{v}) ## @deftypefnx {Function File} {[@var{n}] =} isonormals (@var{x}, @var{y}, @var{z}, @var{val}, @var{p}) ## @deftypefnx {Function File} {[@var{n}] =} isonormals (@dots{}, "negate") ## @deftypefnx {Function File} {} isonormals (@dots{}, @var{p}) ## ## If called with one output argument and the first input argument ## @var{val} is a three-dimensional array that contains the data for an ## isosurface geometry and the second input argument @var{v} keeps the ## vertices of an isosurface then return the normals @var{n} in form of ## a matrix with the same size than @var{v} at computed points ## @command{[x, y, z] = meshgrid (1:l, 1:m, 1:n)}. The output argument ## @var{n} can be taken to manually set @var{VertexNormals} of a patch. ## ## If called with further input arguments @var{x}, @var{y} and @var{z} ## which are three--dimensional arrays with the same size than @var{val} ## then the volume data is taken at those given points. Instead of the ## vertices data @var{v} a patch handle @var{p} can be passed to this ## function. ## ## If given the string input argument @qcode{"negate"} as last input argument ## then compute the reverse vector normals of an isosurface geometry. ## ## If no output argument is given then directly redraw the patch that is ## given by the patch handle @var{p}. ## ## For example: ## @c Set example in small font to prevent overfull line ## ## @smallexample ## function [] = isofinish (p) ## set (gca, "PlotBoxAspectRatioMode", "manual", ... ## "PlotBoxAspectRatio", [1 1 1]); ## set (p, "VertexNormals", -get (p,"VertexNormals")); # Revert normals ## set (p, "FaceColor", "interp"); ## ## set (p, "FaceLighting", "phong"); ## ## light ("Position", [1 1 5]); # Available with JHandles ## endfunction ## ## N = 15; # Increase number of vertices in each direction ## iso = .4; # Change isovalue to .1 to display a sphere ## lin = linspace (0, 2, N); ## [x, y, z] = meshgrid (lin, lin, lin); ## c = abs ((x-.5).^2 + (y-.5).^2 + (z-.5).^2); ## figure (); # Open another figure window ## ## subplot (2,2,1); view (-38, 20); ## [f, v, cdat] = isosurface (x, y, z, c, iso, y); ## p = patch ("Faces", f, "Vertices", v, "FaceVertexCData", cdat, ... ## "FaceColor", "interp", "EdgeColor", "none"); ## isofinish (p); ## Call user function isofinish ## ## subplot (2,2,2); view (-38, 20); ## p = patch ("Faces", f, "Vertices", v, "FaceVertexCData", cdat, ... ## "FaceColor", "interp", "EdgeColor", "none"); ## isonormals (x, y, z, c, p); # Directly modify patch ## isofinish (p); ## ## subplot (2,2,3); view (-38, 20); ## p = patch ("Faces", f, "Vertices", v, "FaceVertexCData", cdat, ... ## "FaceColor", "interp", "EdgeColor", "none"); ## n = isonormals (x, y, z, c, v); # Compute normals of isosurface ## set (p, "VertexNormals", n); # Manually set vertex normals ## isofinish (p); ## ## subplot (2,2,4); view (-38, 20); ## p = patch ("Faces", f, "Vertices", v, "FaceVertexCData", cdat, ... ## "FaceColor", "interp", "EdgeColor", "none"); ## isonormals (x, y, z, c, v, "negate"); # Use reverse directly ## isofinish (p); ## @end smallexample ## ## @seealso{isosurface, isocolors} ## @end deftypefn ## Author: Martin Helm <martin@mhelm.de> function varargout = isonormals (varargin) na = nargin; negate = false; if (ischar (varargin{nargin})) na = nargin-1; if (strcmp (lower (varargin{nargin}), "negate")) negate = true; else error ("isonormals: Unknown option '%s'", varargin{nargin}); endif endif switch (na) case 2 c = varargin{1}; vp = varargin{2}; x = 1:size (c, 2); y = 1:size (c, 1); z = 1:size (c, 3); case 5 x = varargin{1}; y = varargin{2}; z = varargin{3}; c = varargin{4}; vp = varargin{5}; otherwise print_usage (); endswitch if (ismatrix (vp) && columns (vp) == 3) pa = []; v = vp; elseif (ishandle (vp)) pa = vp; v = get (pa, "Vertices"); else error ("isonormals: Last argument is not a vertex list or a patch handle"); endif if (negate) normals = -__interp_cube__ (x, y, z, c, v, "normals"); else normals = __interp_cube__ (x, y, z, c, v, "normals"); endif switch (nargout) case 0 if (!isempty (pa)) set (pa, "VertexNormals", normals); endif case 1 varargout = {normals}; otherwise print_usage (); endswitch endfunction %!test %! [x, y, z] = meshgrid (0:.5:2, 0:.5:2, 0:.5:2); %! c = abs ((x-.5).^2 + (y-.5).^2 + (z-.5).^2); %! [f, v, cdat] = isosurface (x, y, z, c, .4, y); %! n = isonormals (x, y, z, c, v); %! assert (size (v), size (n)); %!test %! [x, y, z] = meshgrid (0:.5:2, 0:.5:2, 0:.5:2); %! c = abs ((x-.5).^2 + (y-.5).^2 + (z-.5).^2); %! [f, v, cdat] = isosurface (x, y, z, c, .4, y); %! np = isonormals (x, y, z, c, v); %! nn = isonormals (x, y, z, c, v, "negate"); %! assert (np, -nn);