--- /dev/null
+## Copyright (C) 2007-2012 David Bateman
+##
+## 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{hg} =} __quiver__ (@dots{})
+## Undocumented internal function.
+## @end deftypefn
+
+function hg = __quiver__ (varargin)
+
+ h = varargin{1};
+ is3d = varargin{2};
+
+ autoscale = 0.9;
+ arrowsize = 0.2;
+
+ firstnonnumeric = Inf;
+ for i = 3:nargin
+ if (! isnumeric (varargin{i}))
+ firstnonnumeric = i;
+ break;
+ endif
+ endfor
+
+ ioff = 3;
+ if (nargin < (6 + is3d) || firstnonnumeric < (6 + is3d))
+ u = varargin{ioff++};
+ v = varargin{ioff++};
+ if (is3d)
+ w = varargin{ioff++};
+ [x, y, z] = meshgrid (1:size(u,2), 1:size(u,1), 1:max(size(w)));
+ else
+ [x, y] = meshgrid (1:size(u,2), 1:size(u,1));
+ endif
+ if (nargin >= ioff && isnumeric (varargin{ioff})
+ && isscalar (varargin{ioff}))
+ autoscale = varargin{ioff++};
+ endif
+ else
+ x = varargin{ioff++};
+ y = varargin{ioff++};
+ if (is3d)
+ z = varargin{ioff++};
+ endif
+ u = varargin{ioff++};
+ v = varargin{ioff++};
+ if (is3d)
+ w = varargin{ioff++};
+ if (isvector (x) && isvector (y) && isvector (z)
+ && (! isvector (u) || ! isvector (v) || ! isvector(w)))
+ [x, y, z] = meshgrid (x, y, z);
+ endif
+ else
+ if (isvector (x) && isvector (y) && (! isvector (u) || ! isvector (v)))
+ [x, y] = meshgrid (x, y);
+ endif
+ endif
+ if (nargin >= ioff && isnumeric (varargin{ioff})
+ && isscalar (varargin{ioff}))
+ autoscale = varargin{ioff++};
+ endif
+ endif
+
+ have_filled = false;
+ have_line_spec = false;
+ args = {};
+ while (ioff <= nargin)
+ arg = varargin{ioff++};
+ if (ischar (arg) && strncmpi (arg, "filled", 6))
+ have_filled = true;
+ elseif ((ischar (arg) || iscell (arg))
+ && ! have_line_spec)
+ [linespec, valid] = __pltopt__ ("quiver", arg, false);
+ if (valid)
+ have_line_spec = true;
+ if (strncmp (linespec.linestyle, "none", 4))
+ linespec.linestyle = "-";
+ endif
+ else
+ args {end + 1} = arg;
+ if (ioff <= nargin)
+ args {end + 1} = varargin{ioff++};
+ endif
+ endif
+ else
+ args {end + 1} = arg;
+ if (ioff <= nargin)
+ args {end + 1} = varargin{ioff++};
+ endif
+ endif
+ endwhile
+
+ if (autoscale && numel (u) > 1)
+ ## Scale the arrows to fit in the grid
+ if (isvector (x))
+ ny = nx = length (x);
+ else
+ [nx, ny] = size (x);
+ endif
+ dx = (max(x(:)) - min(x(:))) ./ nx;
+ dy = (max(y(:)) - min(y(:))) ./ ny;
+ if (is3d)
+ dz = (max(z(:)) - min(z(:))) ./ max (size (z));
+ len = max (sqrt (u(:).^2 + v(:).^2 + w(:).^2));
+ else
+ dz = 0;
+ len = max (sqrt (u(:).^2 + v(:).^2));
+ endif
+ if (len > 0)
+ sd = sqrt (dx.^2 + dy.^2 + dz.^2) / len;
+ if (sd != 0)
+ s = sqrt(2) * autoscale * sd;
+ else # special case of identical points with multiple vectors
+ s = autoscale;
+ endif
+ uu = s * u;
+ vv = s * v;
+ if (is3d)
+ ww = s*w;
+ endif
+ endif
+ else
+ uu = u;
+ vv = v;
+ if (is3d)
+ ww = w;
+ endif
+ endif
+
+ hstate = get (h, "nextplot");
+ unwind_protect
+ hg = hggroup ();
+ if (is3d)
+ args = __add_datasource__ ("quiver3", hg,
+ {"x", "y", "z", "u", "v", "w"}, args{:});
+ else
+ args = __add_datasource__ ("quiver", hg,
+ {"x", "y", "z", "u", "v", "w"}, args{:});
+ endif
+ hold on;
+
+ addproperty ("xdata", hg, "data", x);
+ addproperty ("ydata", hg, "data", y);
+
+ addproperty ("udata", hg, "data", u);
+ addproperty ("vdata", hg, "data", v);
+ if (is3d)
+ addproperty ("zdata", hg, "data", z);
+ addproperty ("wdata", hg, "data", w);
+ else
+ addproperty ("zdata", hg, "data", []);
+ addproperty ("wdata", hg, "data", []);
+ endif
+
+ addlistener (hg, "xdata", @update_data);
+ addlistener (hg, "ydata", @update_data);
+ addlistener (hg, "zdata", @update_data);
+ addlistener (hg, "udata", @update_data);
+ addlistener (hg, "vdata", @update_data);
+ addlistener (hg, "wdata", @update_data);
+
+ x = x(:);
+ y = y(:);
+ xend = x + uu(:);
+ yend = y + vv(:);
+ if (is3d)
+ z = z(:);
+ zend = z + ww(:);
+ endif
+
+ if (have_line_spec)
+ if (is3d)
+ h1 = plot3 ([x.'; xend.'; NaN(1, length (x))](:),
+ [y.'; yend.'; NaN(1, length (y))](:),
+ [z.'; zend.'; NaN(1, length (z))](:),
+ "linestyle", linespec.linestyle,
+ "color", linespec.color, "parent", hg);
+ else
+ h1 = plot ([x.'; xend.'; NaN(1, length (x))](:),
+ [y.'; yend.'; NaN(1, length (y))](:),
+ "linestyle", linespec.linestyle,
+ "color", linespec.color, "parent", hg);
+ endif
+ else
+ if (is3d)
+ h1 = plot3 ([x.'; xend.'; NaN(1, length (x))](:),
+ [y.'; yend.'; NaN(1, length (y))](:),
+ [z.'; zend.'; NaN(1, length (z))](:),
+ "color", "black", "parent", hg);
+ else
+ h1 = plot ([x.'; xend.'; NaN(1, length (x))](:),
+ [y.'; yend.'; NaN(1, length (y))](:),
+ "parent", hg);
+ endif
+ endif
+
+ xtmp = x + uu(:) .* (1 - arrowsize);
+ ytmp = y + vv(:) .* (1 - arrowsize);
+ xarrw1 = xtmp + (y - yend) * arrowsize / 3;
+ xarrw2 = xtmp - (y - yend) * arrowsize / 3;
+ yarrw1 = ytmp - (x - xend) * arrowsize / 3;
+ yarrw2 = ytmp + (x - xend) * arrowsize / 3;
+ if (is3d)
+ zarrw1 = zarrw2 = zend - ww(:) * arrowsize;
+ endif
+
+ if (have_line_spec)
+ if (isfield (linespec, "marker")
+ && ! strncmp (linespec.marker, "none", 4))
+ if (is3d)
+ h2 = plot3 ([xarrw1.'; xend.'; xarrw2.'; NaN(1, length (x))](:),
+ [yarrw1.'; yend.'; yarrw2.'; NaN(1, length (y))](:),
+ [zarrw1.'; zend.'; zarrw2.'; NaN(1, length (z))](:),
+ "linestyle", "none", "parent", hg);
+ else
+ h2 = plot ([xarrw1.'; xend.'; xarrw2.'; NaN(1, length (x))](:),
+ [yarrw1.'; yend.'; yarrw2.'; NaN(1, length (y))](:),
+ "linestyle", "none", "parent", hg);
+ endif
+ else
+ if (is3d)
+ h2 = plot3 ([xarrw1.'; xend.'; xarrw2.'; NaN(1, length (x))](:),
+ [yarrw1.'; yend.'; yarrw2.'; NaN(1, length (y))](:),
+ [zarrw1.'; zend.'; zarrw2.'; NaN(1, length (z))](:),
+ "linestyle", linespec.linestyle,
+ "color", linespec.color, "parent", hg);
+ else
+ h2 = plot ([xarrw1.'; xend.'; xarrw2.'; NaN(1, length (x))](:),
+ [yarrw1.'; yend.'; yarrw2.'; NaN(1, length (y))](:),
+ "linestyle", linespec.linestyle,
+ "color", linespec.color, "parent", hg);
+ endif
+ endif
+ elseif (is3d)
+ h2 = plot3 ([xarrw1.'; xend.'; xarrw2.'; NaN(1, length (x))](:),
+ [yarrw1.'; yend.'; yarrw2.'; NaN(1, length (y))](:),
+ [zarrw1.'; zend.'; zarrw2.'; NaN(1, length (z))](:),
+ "color", "black", "parent", hg);
+ else
+ h2 = plot ([xarrw1.'; xend.'; xarrw2.'; NaN(1, length (x))](:),
+ [yarrw1.'; yend.'; yarrw2.'; NaN(1, length (y))](:),
+ "parent", hg);
+ endif
+
+ if (! have_line_spec
+ || (isfield (linespec, "marker")
+ && strncmp (linespec.marker, "none", 4)))
+ if (is3d)
+ h3 = plot3 (x, y, z, "linestyle", "none", "marker", "none",
+ "parent", hg);
+ else
+ h3 = plot (x, y, "linestyle", "none", "marker", "none", "parent", hg);
+ endif
+ else
+ if (is3d)
+ h3 = plot3 (x, y, z, "linestyle", "none", "marker", linespec.marker,
+ "parent", hg);
+ else
+
+ h3 = plot (x, y, "linestyle", "none", "marker", linespec.marker,
+ "parent", hg);
+ endif
+ endif
+ if (have_filled)
+ ## FIXME gnuplot doesn't respect the markerfacecolor field
+ set (h3, "markerfacecolor", get (h1, "color"));
+ endif
+
+ ## Set up the hggroup properties and listeners
+ if (autoscale)
+ addproperty ("autoscale", hg, "radio", "{on}|off", "on");
+ addproperty ("autoscalefactor", hg, "data", autoscale);
+ else
+ addproperty ("autoscale", hg, "radio", "{on}|off", "off");
+ addproperty ("autoscalefactor", hg, "data", 1.0);
+ endif
+ addlistener (hg, "autoscale", @update_data);
+ addlistener (hg, "autoscalefactor", @update_data);
+
+ addproperty ("maxheadsize", hg, "data", arrowsize);
+ addlistener (hg, "maxheadsize", @update_data);
+
+ addproperty ("showarrowhead", hg, "radio", "{on}|off", "on");
+ addlistener (hg, "showarrowhead", @update_props);
+
+ addproperty ("color", hg, "linecolor", get (h1, "color"));
+ addproperty ("linewidth", hg, "linelinewidth", get (h1, "linewidth"));
+ addproperty ("linestyle", hg, "linelinestyle", get (h1, "linestyle"));
+ addproperty ("marker", hg, "linemarker", get (h3, "marker"));
+ addproperty ("markerfacecolor", hg, "linemarkerfacecolor",
+ get (h3, "markerfacecolor"));
+ addproperty ("markersize", hg, "linemarkersize", get (h3, "markersize"));
+
+ addlistener (hg, "color", @update_props);
+ addlistener (hg, "linewidth", @update_props);
+ addlistener (hg, "linestyle", @update_props);
+ addlistener (hg, "marker", @update_props);
+ addlistener (hg, "markerfacecolor", @update_props);
+ addlistener (hg, "markersize", @update_props);
+
+ if (! isempty (args))
+ set (hg, args{:});
+ endif
+ unwind_protect_cleanup
+ set (h, "nextplot", hstate);
+ end_unwind_protect
+
+endfunction
+
+function update_data (h, d)
+ x = get (h, "xdata");
+ y = get (h, "ydata");
+ z = get (h, "zdata");
+
+ u = get (h, "udata");
+ v = get (h, "vdata");
+ w = get (h, "wdata");
+
+ s = get (h, "autoscalefactor");
+ arrowsize = get (h, "maxheadsize");
+
+ kids = get (h, "children");
+
+ if (isempty (z) || isempty (w))
+ is3d = false;
+ else
+ is3d = true;
+ endif
+
+ if (strcmpi (get (h, "autoscale"), "on") && s != 0)
+ ## Scale the arrows to fit in the grid
+ if (isvector (x))
+ ny = nx = length (x);
+ else
+ [nx, ny] = size (x);
+ endif
+ dx = (max(x(:)) - min(x(:))) ./ nx;
+ dy = (max(y(:)) - min(y(:))) ./ ny;
+ if (is3d)
+ dz = (max(z(:)) - min(z(:))) ./ max (size (z));
+ len = max (sqrt (u(:).^2 + v(:).^2 + w(:).^2));
+ else
+ dz = 0;
+ len = max (sqrt (u(:).^2 + v(:).^2));
+ endif
+ if (len > 0)
+ sd = sqrt (dx.^2 + dy.^2 + dz.^2) / len;
+ if (sd != 0)
+ s *= sqrt(2) * sd;
+ endif
+ u = s * u;
+ v = s * v;
+ if (is3d)
+ w = s*w;
+ endif
+ endif
+ endif
+
+ x = x(:);
+ y = y(:);
+ xend = x + u(:);
+ yend = y + v(:);
+ if (is3d)
+ z = z(:);
+ zend = z + w(:);
+ endif
+
+ set (kids (3), "xdata", [x.'; xend.'; NaN(1, length (x))](:));
+ set (kids (3), "ydata", [y.'; yend.'; NaN(1, length (y))](:));
+ if (is3d)
+ set (kids (3), "zdata", [z.'; zend.'; NaN(1, length (z))](:));
+ endif
+
+ xtmp = x + u(:) .* (1 - arrowsize);
+ ytmp = y + v(:) .* (1 - arrowsize);
+ xarrw1 = xtmp + (y - yend) * arrowsize / 3;
+ xarrw2 = xtmp - (y - yend) * arrowsize / 3;
+ yarrw1 = ytmp - (x - xend) * arrowsize / 3;
+ yarrw2 = ytmp + (x - xend) * arrowsize / 3;
+ if (is3d)
+ zarrw1 = zarrw2 = zend - w(:) * arrowsize;
+ endif
+
+ set (kids (2), "xdata", [x.'; xend.'; NaN(1, length (x))](:));
+ set (kids (2), "ydata", [y.'; yend.'; NaN(1, length (y))](:));
+ if (is3d)
+ set (kids (2), "zdata", [z.'; zend.'; NaN(1, length (z))](:));
+ endif
+
+ set (kids (2), "xdata", [xarrw1.'; xend.'; xarrw2.'; NaN(1, length (x))](:));
+ set (kids (2), "ydata", [yarrw1.'; yend.'; yarrw2.'; NaN(1, length (y))](:));
+ if (is3d)
+ set (kids (2), "zdata", [zarrw1.'; zend.'; zarrw2.'; NaN(1, length (z))](:));
+ endif
+
+ set (kids (1), "xdata", x);
+ set (kids (1), "ydata", y);
+ if (is3d)
+ set (kids (1), "zdata", z);
+ endif
+
+endfunction
+
+function update_props (h, d)
+ kids = get (h, "children");
+
+ set (kids(3), "color", get (h, "color"),
+ "linewidth", get (h, "linewidth"),
+ "linestyle", get (h, "linestyle"));
+ set (kids(2), "color", get (h, "color"),
+ "linewidth", get (h, "linewidth"),
+ "linestyle", get (h, "linestyle"));
+ if (strcmpi (get (h, "showarrowhead"), "on"))
+ set (kids (2), "visible", "on");
+ else
+ set (kids (2), "visible", "off");
+ endif
+ set (kids(1), "color", get (h, "color"),
+ "marker", get (h, "marker"),
+ "markerfacecolor", get (h, "markerfacecolor"),
+ "markersize", get (h, "markersize"));
+endfunction
git://git.creatis.insa-lyon.fr / CreaPhase.git / blobdiff