Mercurial > octave-nkf
view scripts/plot/draw/isosurface.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/isosurface.m@bc924baa2c4e |
children | 382aaf2d533a |
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## 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{fv}] =} isosurface (@var{val}, @var{iso}) ## @deftypefnx {Function File} {[@var{fv}] =} isosurface (@var{x}, @var{y}, @var{z}, @var{val}, @var{iso}) ## @deftypefnx {Function File} {[@var{fv}] =} isosurface (@dots{}, "noshare", "verbose") ## @deftypefnx {Function File} {[@var{fvc}] =} isosurface (@dots{}, @var{col}) ## @deftypefnx {Function File} {[@var{f}, @var{v}] =} isosurface (@var{x}, @var{y}, @var{z}, @var{val}, @var{iso}) ## @deftypefnx {Function File} {[@var{f}, @var{v}, @var{c}] =} isosurface (@var{x}, @var{y}, @var{z}, @var{val}, @var{iso}, @var{col}) ## @deftypefnx {Function File} {} isosurface (@var{x}, @var{y}, @var{z}, @var{val}, @var{iso}, @var{col}, @var{opt}) ## ## If called with one output argument and the first input argument ## @var{val} is a three-dimensional array that contains the data of an ## isosurface geometry and the second input argument @var{iso} keeps the ## isovalue as a scalar value then return a structure array @var{fv} ## that contains the fields @var{Faces} and @var{Vertices} at computed ## points @command{[x, y, z] = meshgrid (1:l, 1:m, 1:n)}. The output ## argument @var{fv} can directly be taken as an input argument for the ## @command{patch} function. ## ## 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. ## ## The string input argument @qcode{"noshare"} is only for compatibility and ## has no effect. If given the string input argument ## @qcode{"verbose"} then print messages to the command line interface about the ## current progress. ## ## If called with the input argument @var{col} which is a ## three-dimensional array of the same size than @var{val} then take ## those values for the interpolation of coloring the isosurface ## geometry. Add the field @var{FaceVertexCData} to the structure ## array @var{fv}. ## ## If called with two or three output arguments then return the ## information about the faces @var{f}, vertices @var{v} and color data ## @var{c} as separate arrays instead of a single structure array. ## ## If called with no output argument then directly process the ## isosurface geometry with the @command{patch} command. ## ## For example, ## ## @example ## @group ## [x, y, z] = meshgrid (1:5, 1:5, 1:5); ## val = rand (5, 5, 5); ## isosurface (x, y, z, val, .5); ## @end group ## @end example ## ## @noindent ## will directly draw a random isosurface geometry in a graphics window. ## Another example for an isosurface geometry with different additional ## coloring ## @c Set example in small font to prevent overfull line ## ## @smallexample ## 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] = isosurface (x, y, z, c, iso); ## p = patch ("Faces", f, "Vertices", v, "EdgeColor", "none"); ## set (gca, "PlotBoxAspectRatioMode", "manual", ... ## "PlotBoxAspectRatio", [1 1 1]); ## # set (p, "FaceColor", "green", "FaceLighting", "phong"); ## # light ("Position", [1 1 5]); # Available with the JHandles package ## ## subplot (2,2,2); view (-38, 20); ## p = patch ("Faces", f, "Vertices", v, "EdgeColor", "blue"); ## set (gca, "PlotBoxAspectRatioMode", "manual", ... ## "PlotBoxAspectRatio", [1 1 1]); ## # set (p, "FaceColor", "none", "FaceLighting", "phong"); ## # light ("Position", [1 1 5]); ## ## subplot (2,2,3); view (-38, 20); ## [f, v, c] = isosurface (x, y, z, c, iso, y); ## p = patch ("Faces", f, "Vertices", v, "FaceVertexCData", c, ... ## "FaceColor", "interp", "EdgeColor", "none"); ## set (gca, "PlotBoxAspectRatioMode", "manual", ... ## "PlotBoxAspectRatio", [1 1 1]); ## # set (p, "FaceLighting", "phong"); ## # light ("Position", [1 1 5]); ## ## subplot (2,2,4); view (-38, 20); ## p = patch ("Faces", f, "Vertices", v, "FaceVertexCData", c, ... ## "FaceColor", "interp", "EdgeColor", "blue"); ## set (gca, "PlotBoxAspectRatioMode", "manual", ... ## "PlotBoxAspectRatio", [1 1 1]); ## # set (p, "FaceLighting", "phong"); ## # light ("Position", [1 1 5]); ## @end smallexample ## ## @seealso{isonormals, isocolors} ## @end deftypefn ## Author: Martin Helm <martin@mhelm.de> function varargout = isosurface (varargin) if (nargin < 2 || nargin > 8 || nargout > 3) print_usage (); endif calc_colors = false; f = v = c = []; verbose = false; noshare = false; if (nargin >= 5) x = varargin{1}; y = varargin{2}; z = varargin{3}; val = varargin{4}; iso = varargin{5}; if (nargin >= 6 && ismatrix (varargin{6})) colors = varargin{6}; calc_colors = true; endif else val = varargin{1}; [n2, n1, n3] = size (val); [x, y, z] = meshgrid (1:n1, 1:n2, 1:n3); iso = varargin{2}; if (nargin >= 3 && ismatrix (varargin{3})) colors = varargin{3}; calc_colors = true; endif endif if (calc_colors) if (nargout == 2) warning ("isosurface: colors will be calculated, but no output argument to receive it."); endif [fvc.faces, fvc.vertices, fvc.facevertexcdata] = __marching_cube__ (x, y, z, val, iso, colors); else [fvc.faces, fvc.vertices] = __marching_cube__ (x, y, z, val, iso); endif if (isempty (fvc.vertices) || isempty (fvc.faces)) warning ("isosurface: triangulation is empty"); endif switch (nargout) case 0 ## plot the calculated surface hax = newplot (); if (calc_colors) pa = patch ("Faces", fvc.faces, "Vertices", fvc.vertices, "FaceVertexCData", fvc.facevertexcdata, "FaceColor", "flat", "EdgeColor", "none"); else pa = patch ("Faces", fvc.faces, "Vertices", fvc.vertices, "FaceColor", "g", "EdgeColor", "k"); endif if (! ishold ()) set (hax, "view", [-37.5, 30], "xgrid", "on", "ygrid", "on", "zgrid", "on"); endif case 1 varargout = {fvc}; case 2 varargout = {fvc.faces, fvc.vertices}; case 3 varargout = {fvc.faces, fvc.vertices, fvc.facevertexcdata}; otherwise print_usage (); endswitch endfunction %!demo %! clf; %! [x,y,z] = meshgrid (-2:0.5:2, -2:0.5:2, -2:0.5:2); %! v = x.^2 + y.^2 + z.^2; %! isosurface (x, y, z, v, 1); %! title ('isosurface of a sphere'); %!shared x, y, z, val %! [x, y, z] = meshgrid (0:1, 0:1, 0:1); # Points for single %! val = [0, 0; 0, 0]; # cube and a 3-D %! val(:,:,2) = [0, 0; 1, 0]; # array of values %!test %! fv = isosurface (x, y, z, val, 0.3); %! assert (isfield (fv, "vertices"), true); %! assert (isfield (fv, "faces"), true); %! assert (size (fv.vertices), [3 3]); %! assert (size (fv.faces), [1 3]); %!test %! fvc = isosurface (x, y, z, val, .3, y); %! assert (isfield (fvc, "vertices"), true); %! assert (isfield (fvc, "faces"), true); %! assert (isfield (fvc, "facevertexcdata"), true); %! assert (size (fvc.vertices), [3 3]); %! assert (size (fvc.faces), [1 3]); %! assert (size (fvc.facevertexcdata), [3 1]); %!test %! [f, v] = isosurface (x, y, z, val, .3); %! assert (size (f), [1 3]); %! assert (size (v), [3 3]); %!test %! [f, v, c] = isosurface (x, y, z, val, .3, y); %! assert (size (f), [1 3]); %! assert (size (v), [3 3]); %! assert (size (c), [3 1]);