Mercurial > hg > octave-lyh

annotate scripts/plot/surfl.m @ 17194:c954b0a396a2

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
comet.m: Speed up animation by using low-level graphic commands. * scripts/plot/comet.m: Speed up animation by using low-level graphic commands.
author Rik <rik@octave.org>
date Mon, 05 Aug 2013 15:44:02 -0700
parents fd9a8b1a8768
children df4c4b7708a4
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
14138
72c96de7a403 maint: update copyright notices for 2012
John W. Eaton <jwe@octave.org>
parents: 14092
diff changeset
1 ## Copyright (C) 2009-2012 Kai Habel
8450
6c4e2fc14beb Add new 3D plotting function surfl. Add light functions diffuse and specular
Kai Habel
parents:
diff changeset
2 ##
6c4e2fc14beb Add new 3D plotting function surfl. Add light functions diffuse and specular
Kai Habel
parents:
diff changeset
3 ## This file is part of Octave.
6c4e2fc14beb Add new 3D plotting function surfl. Add light functions diffuse and specular
Kai Habel
parents:
diff changeset
4 ##
6c4e2fc14beb Add new 3D plotting function surfl. Add light functions diffuse and specular
Kai Habel
parents:
diff changeset
5 ## Octave is free software; you can redistribute it and/or modify it
6c4e2fc14beb Add new 3D plotting function surfl. Add light functions diffuse and specular
Kai Habel
parents:
diff changeset
6 ## under the terms of the GNU General Public License as published by
6c4e2fc14beb Add new 3D plotting function surfl. Add light functions diffuse and specular
Kai Habel
parents:
diff changeset
7 ## the Free Software Foundation; either version 3 of the License, or (at
6c4e2fc14beb Add new 3D plotting function surfl. Add light functions diffuse and specular
Kai Habel
parents:
diff changeset
8 ## your option) any later version.
6c4e2fc14beb Add new 3D plotting function surfl. Add light functions diffuse and specular
Kai Habel
parents:
diff changeset
9 ##
6c4e2fc14beb Add new 3D plotting function surfl. Add light functions diffuse and specular
Kai Habel
parents:
diff changeset
10 ## Octave is distributed in the hope that it will be useful, but
6c4e2fc14beb Add new 3D plotting function surfl. Add light functions diffuse and specular
Kai Habel
parents:
diff changeset
11 ## WITHOUT ANY WARRANTY; without even the implied warranty of
6c4e2fc14beb Add new 3D plotting function surfl. Add light functions diffuse and specular
Kai Habel
parents:
diff changeset
12 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
6c4e2fc14beb Add new 3D plotting function surfl. Add light functions diffuse and specular
Kai Habel
parents:
diff changeset
13 ## General Public License for more details.
6c4e2fc14beb Add new 3D plotting function surfl. Add light functions diffuse and specular
Kai Habel
parents:
diff changeset
14 ##
6c4e2fc14beb Add new 3D plotting function surfl. Add light functions diffuse and specular
Kai Habel
parents:
diff changeset
15 ## You should have received a copy of the GNU General Public License
6c4e2fc14beb Add new 3D plotting function surfl. Add light functions diffuse and specular
Kai Habel
parents:
diff changeset
16 ## along with Octave; see the file COPYING. If not, see
6c4e2fc14beb Add new 3D plotting function surfl. Add light functions diffuse and specular
Kai Habel
parents:
diff changeset
17 ## <http://www.gnu.org/licenses/>.
6c4e2fc14beb Add new 3D plotting function surfl. Add light functions diffuse and specular
Kai Habel
parents:
diff changeset
18
6c4e2fc14beb Add new 3D plotting function surfl. Add light functions diffuse and specular
Kai Habel
parents:
diff changeset
19 ## -*- texinfo -*-
10793
be55736a0783 Grammarcheck the documentation from m-files.
Rik <octave@nomad.inbox5.com>
parents: 10549
diff changeset
20 ## @deftypefn {Function File} {} surfl (@var{x}, @var{y}, @var{z})
8450
6c4e2fc14beb Add new 3D plotting function surfl. Add light functions diffuse and specular
Kai Habel
parents:
diff changeset
21 ## @deftypefnx {Function File} {} surfl (@var{z})
6c4e2fc14beb Add new 3D plotting function surfl. Add light functions diffuse and specular
Kai Habel
parents:
diff changeset
22 ## @deftypefnx {Function File} {} surfl (@var{x}, @var{y}, @var{z}, @var{L})
6c4e2fc14beb Add new 3D plotting function surfl. Add light functions diffuse and specular
Kai Habel
parents:
diff changeset
23 ## @deftypefnx {Function File} {} surfl (@var{x}, @var{y}, @var{z}, @var{L}, @var{P})
11563
3c6e8aaa9555 Grammarcheck m-files before 3.4 release.
Rik <octave@nomad.inbox5.com>
parents: 11523
diff changeset
24 ## @deftypefnx {Function File} {} surfl (@dots{}, "light")
17126
eaab03308c0b doc: Rewrite docstrings for most plot functions.
Rik <rik@octave.org>
parents: 17052
diff changeset
25 ## @deftypefnx {Function File} {} surfl (@var{hax}, @dots{})
eaab03308c0b doc: Rewrite docstrings for most plot functions.
Rik <rik@octave.org>
parents: 17052
diff changeset
26 ## @deftypefnx {Function File} {@var{h} =} surfl (@dots{})
eaab03308c0b doc: Rewrite docstrings for most plot functions.
Rik <rik@octave.org>
parents: 17052
diff changeset
27 ##
eaab03308c0b doc: Rewrite docstrings for most plot functions.
Rik <rik@octave.org>
parents: 17052
diff changeset
28 ## Plot a 3-D surface using shading based on various lighting models.
8450
6c4e2fc14beb Add new 3D plotting function surfl. Add light functions diffuse and specular
Kai Habel
parents:
diff changeset
29 ##
17126
eaab03308c0b doc: Rewrite docstrings for most plot functions.
Rik <rik@octave.org>
parents: 17052
diff changeset
30 ## The surface mesh is plotted using shaded rectangles. The vertices of the
eaab03308c0b doc: Rewrite docstrings for most plot functions.
Rik <rik@octave.org>
parents: 17052
diff changeset
31 ## rectangles [@var{x}, @var{y}] are typically the output of @code{meshgrid}.
eaab03308c0b doc: Rewrite docstrings for most plot functions.
Rik <rik@octave.org>
parents: 17052
diff changeset
32 ## over a 2-D rectangular region in the x-y plane. @var{z} determines the
eaab03308c0b doc: Rewrite docstrings for most plot functions.
Rik <rik@octave.org>
parents: 17052
diff changeset
33 ## height above the plane of each vertex. If only a single @var{z} matrix is
eaab03308c0b doc: Rewrite docstrings for most plot functions.
Rik <rik@octave.org>
parents: 17052
diff changeset
34 ## given, then it is plotted over the meshgrid
eaab03308c0b doc: Rewrite docstrings for most plot functions.
Rik <rik@octave.org>
parents: 17052
diff changeset
35 ## @code{@var{x} = 1:columns (@var{z}), @var{y} = 1:rows (@var{z})}.
eaab03308c0b doc: Rewrite docstrings for most plot functions.
Rik <rik@octave.org>
parents: 17052
diff changeset
36 ## Thus, columns of @var{z} correspond to different @var{x} values and rows
eaab03308c0b doc: Rewrite docstrings for most plot functions.
Rik <rik@octave.org>
parents: 17052
diff changeset
37 ## of @var{z} correspond to different @var{y} values.
8450
6c4e2fc14beb Add new 3D plotting function surfl. Add light functions diffuse and specular
Kai Habel
parents:
diff changeset
38 ##
17126
eaab03308c0b doc: Rewrite docstrings for most plot functions.
Rik <rik@octave.org>
parents: 17052
diff changeset
39 ## The default lighting mode "cdata", changes the cdata property of the
eaab03308c0b doc: Rewrite docstrings for most plot functions.
Rik <rik@octave.org>
parents: 17052
diff changeset
40 ## surface object to give the impression of a lighted surface.
eaab03308c0b doc: Rewrite docstrings for most plot functions.
Rik <rik@octave.org>
parents: 17052
diff changeset
41 ## @strong{Warning:} The alternative mode "light" mode which creates a light
eaab03308c0b doc: Rewrite docstrings for most plot functions.
Rik <rik@octave.org>
parents: 17052
diff changeset
42 ## object to illuminate the surface is not implemented (yet).
eaab03308c0b doc: Rewrite docstrings for most plot functions.
Rik <rik@octave.org>
parents: 17052
diff changeset
43 ##
eaab03308c0b doc: Rewrite docstrings for most plot functions.
Rik <rik@octave.org>
parents: 17052
diff changeset
44 ## The light source location can be specified using @var{L}. It can be given
eaab03308c0b doc: Rewrite docstrings for most plot functions.
Rik <rik@octave.org>
parents: 17052
diff changeset
45 ## as a 2-element vector [azimuth, elevation] in degrees, or as a 3-element
eaab03308c0b doc: Rewrite docstrings for most plot functions.
Rik <rik@octave.org>
parents: 17052
diff changeset
46 ## vector [lx, ly, lz]. The default value is rotated 45 degrees
eaab03308c0b doc: Rewrite docstrings for most plot functions.
Rik <rik@octave.org>
parents: 17052
diff changeset
47 ## counterclockwise to the current view.
eaab03308c0b doc: Rewrite docstrings for most plot functions.
Rik <rik@octave.org>
parents: 17052
diff changeset
48 ##
eaab03308c0b doc: Rewrite docstrings for most plot functions.
Rik <rik@octave.org>
parents: 17052
diff changeset
49 ## The material properties of the surface can specified using a 4-element
eaab03308c0b doc: Rewrite docstrings for most plot functions.
Rik <rik@octave.org>
parents: 17052
diff changeset
50 ## vector @var{P} = [@var{AM} @var{D} @var{SP} @var{exp}] which defaults to
11587
c792872f8942 all script files: untabify and strip trailing whitespace
John W. Eaton <jwe@octave.org>
parents: 11563
diff changeset
51 ## @var{p} = [0.55 0.6 0.4 10].
14248
48cb466f1418 surfl.m: Update docstring.
Rik <octave@nomad.inbox5.com>
parents: 14237
diff changeset
52 ##
11595
5ec6aa05638d Prevent doubled quotes around @table items in Info.
Rik <octave@nomad.inbox5.com>
parents: 11587
diff changeset
53 ## @table @asis
8450
6c4e2fc14beb Add new 3D plotting function surfl. Add light functions diffuse and specular
Kai Habel
parents:
diff changeset
54 ## @item "AM" strength of ambient light
10821
693e22af08ae Grammarcheck documentation of m-files
Rik <octave@nomad.inbox5.com>
parents: 10793
diff changeset
55 ##
8450
6c4e2fc14beb Add new 3D plotting function surfl. Add light functions diffuse and specular
Kai Habel
parents:
diff changeset
56 ## @item "D" strength of diffuse reflection
10821
693e22af08ae Grammarcheck documentation of m-files
Rik <octave@nomad.inbox5.com>
parents: 10793
diff changeset
57 ##
8450
6c4e2fc14beb Add new 3D plotting function surfl. Add light functions diffuse and specular
Kai Habel
parents:
diff changeset
58 ## @item "SP" strength of specular reflection
10821
693e22af08ae Grammarcheck documentation of m-files
Rik <octave@nomad.inbox5.com>
parents: 10793
diff changeset
59 ##
8450
6c4e2fc14beb Add new 3D plotting function surfl. Add light functions diffuse and specular
Kai Habel
parents:
diff changeset
60 ## @item "EXP" specular exponent
6c4e2fc14beb Add new 3D plotting function surfl. Add light functions diffuse and specular
Kai Habel
parents:
diff changeset
61 ## @end table
11587
c792872f8942 all script files: untabify and strip trailing whitespace
John W. Eaton <jwe@octave.org>
parents: 11563
diff changeset
62 ##
17126
eaab03308c0b doc: Rewrite docstrings for most plot functions.
Rik <rik@octave.org>
parents: 17052
diff changeset
63 ## If the first argument @var{hax} is an axes handle, then plot into this axis,
eaab03308c0b doc: Rewrite docstrings for most plot functions.
Rik <rik@octave.org>
parents: 17052
diff changeset
64 ## rather than the current axes returned by @code{gca}.
eaab03308c0b doc: Rewrite docstrings for most plot functions.
Rik <rik@octave.org>
parents: 17052
diff changeset
65 ##
eaab03308c0b doc: Rewrite docstrings for most plot functions.
Rik <rik@octave.org>
parents: 17052
diff changeset
66 ## The optional return value @var{h} is a graphics handle to the created
eaab03308c0b doc: Rewrite docstrings for most plot functions.
Rik <rik@octave.org>
parents: 17052
diff changeset
67 ## surface object.
8450
6c4e2fc14beb Add new 3D plotting function surfl. Add light functions diffuse and specular
Kai Habel
parents:
diff changeset
68 ##
6c4e2fc14beb Add new 3D plotting function surfl. Add light functions diffuse and specular
Kai Habel
parents:
diff changeset
69 ## Example:
6c4e2fc14beb Add new 3D plotting function surfl. Add light functions diffuse and specular
Kai Habel
parents:
diff changeset
70 ##
6c4e2fc14beb Add new 3D plotting function surfl. Add light functions diffuse and specular
Kai Habel
parents:
diff changeset
71 ## @example
9051
1bf0ce0930be Grammar check TexInfo in all .m files
Rik <rdrider0-list@yahoo.com>
parents: 9040
diff changeset
72 ## @group
14327
4d917a6a858b doc: Use Octave coding conventions in @example blocks of docstrings.
Rik <octave@nomad.inbox5.com>
parents: 14138
diff changeset
73 ## colormap (bone (64));
4d917a6a858b doc: Use Octave coding conventions in @example blocks of docstrings.
Rik <octave@nomad.inbox5.com>
parents: 14138
diff changeset
74 ## surfl (peaks);
8450
6c4e2fc14beb Add new 3D plotting function surfl. Add light functions diffuse and specular
Kai Habel
parents:
diff changeset
75 ## shading interp;
9051
1bf0ce0930be Grammar check TexInfo in all .m files
Rik <rdrider0-list@yahoo.com>
parents: 9040
diff changeset
76 ## @end group
8450
6c4e2fc14beb Add new 3D plotting function surfl. Add light functions diffuse and specular
Kai Habel
parents:
diff changeset
77 ## @end example
17126
eaab03308c0b doc: Rewrite docstrings for most plot functions.
Rik <rik@octave.org>
parents: 17052
diff changeset
78 ## @seealso{diffuse, specular, surf, shading, colormap, caxis}
8450
6c4e2fc14beb Add new 3D plotting function surfl. Add light functions diffuse and specular
Kai Habel
parents:
diff changeset
79 ## @end deftypefn
6c4e2fc14beb Add new 3D plotting function surfl. Add light functions diffuse and specular
Kai Habel
parents:
diff changeset
80
6c4e2fc14beb Add new 3D plotting function surfl. Add light functions diffuse and specular
Kai Habel
parents:
diff changeset
81 ## Author: Kai Habel <kai.habel@gmx.de>
6c4e2fc14beb Add new 3D plotting function surfl. Add light functions diffuse and specular
Kai Habel
parents:
diff changeset
82
17131
fd9a8b1a8768 surfl.m: Overhaul function.
Rik <rik@octave.org>
parents: 17126
diff changeset
83 function h = surfl (varargin)
fd9a8b1a8768 surfl.m: Overhaul function.
Rik <rik@octave.org>
parents: 17126
diff changeset
84
fd9a8b1a8768 surfl.m: Overhaul function.
Rik <rik@octave.org>
parents: 17126
diff changeset
85 [hax, varargin, nargin] = __plt_get_axis_arg__ ("surfl", varargin{:});
fd9a8b1a8768 surfl.m: Overhaul function.
Rik <rik@octave.org>
parents: 17126
diff changeset
86
fd9a8b1a8768 surfl.m: Overhaul function.
Rik <rik@octave.org>
parents: 17126
diff changeset
87 if (nargin == 0)
fd9a8b1a8768 surfl.m: Overhaul function.
Rik <rik@octave.org>
parents: 17126
diff changeset
88 print_usage ();
fd9a8b1a8768 surfl.m: Overhaul function.
Rik <rik@octave.org>
parents: 17126
diff changeset
89 endif
fd9a8b1a8768 surfl.m: Overhaul function.
Rik <rik@octave.org>
parents: 17126
diff changeset
90
fd9a8b1a8768 surfl.m: Overhaul function.
Rik <rik@octave.org>
parents: 17126
diff changeset
91 ## Check for lighting type.
fd9a8b1a8768 surfl.m: Overhaul function.
Rik <rik@octave.org>
parents: 17126
diff changeset
92 use_cdata = true;
fd9a8b1a8768 surfl.m: Overhaul function.
Rik <rik@octave.org>
parents: 17126
diff changeset
93 if (ischar (varargin{end}))
fd9a8b1a8768 surfl.m: Overhaul function.
Rik <rik@octave.org>
parents: 17126
diff changeset
94 switch (tolower (varargin{end}))
fd9a8b1a8768 surfl.m: Overhaul function.
Rik <rik@octave.org>
parents: 17126
diff changeset
95 case "light"
fd9a8b1a8768 surfl.m: Overhaul function.
Rik <rik@octave.org>
parents: 17126
diff changeset
96 warning ("light method not supported (yet), using cdata method instead");
fd9a8b1a8768 surfl.m: Overhaul function.
Rik <rik@octave.org>
parents: 17126
diff changeset
97 ## This can be implemented when light objects are supported.
fd9a8b1a8768 surfl.m: Overhaul function.
Rik <rik@octave.org>
parents: 17126
diff changeset
98 use_cdata = false;
fd9a8b1a8768 surfl.m: Overhaul function.
Rik <rik@octave.org>
parents: 17126
diff changeset
99 case "cdata"
fd9a8b1a8768 surfl.m: Overhaul function.
Rik <rik@octave.org>
parents: 17126
diff changeset
100 use_cdata = true;
fd9a8b1a8768 surfl.m: Overhaul function.
Rik <rik@octave.org>
parents: 17126
diff changeset
101 otherwise
fd9a8b1a8768 surfl.m: Overhaul function.
Rik <rik@octave.org>
parents: 17126
diff changeset
102 error ("surfl: unknown lighting method");
fd9a8b1a8768 surfl.m: Overhaul function.
Rik <rik@octave.org>
parents: 17126
diff changeset
103 endswitch
fd9a8b1a8768 surfl.m: Overhaul function.
Rik <rik@octave.org>
parents: 17126
diff changeset
104 varargin(end) = [];
fd9a8b1a8768 surfl.m: Overhaul function.
Rik <rik@octave.org>
parents: 17126
diff changeset
105 endif
8450
6c4e2fc14beb Add new 3D plotting function surfl. Add light functions diffuse and specular
Kai Habel
parents:
diff changeset
106
17131
fd9a8b1a8768 surfl.m: Overhaul function.
Rik <rik@octave.org>
parents: 17126
diff changeset
107 ## Check for reflection properties argument.
fd9a8b1a8768 surfl.m: Overhaul function.
Rik <rik@octave.org>
parents: 17126
diff changeset
108 ##
fd9a8b1a8768 surfl.m: Overhaul function.
Rik <rik@octave.org>
parents: 17126
diff changeset
109 ## r = [ambient light strength,
fd9a8b1a8768 surfl.m: Overhaul function.
Rik <rik@octave.org>
parents: 17126
diff changeset
110 ## diffuse reflection strength,
fd9a8b1a8768 surfl.m: Overhaul function.
Rik <rik@octave.org>
parents: 17126
diff changeset
111 ## specular reflection strength,
fd9a8b1a8768 surfl.m: Overhaul function.
Rik <rik@octave.org>
parents: 17126
diff changeset
112 ## specular shine]
fd9a8b1a8768 surfl.m: Overhaul function.
Rik <rik@octave.org>
parents: 17126
diff changeset
113 if (isnumeric (varargin{end}) && length (varargin{end}) == 4)
fd9a8b1a8768 surfl.m: Overhaul function.
Rik <rik@octave.org>
parents: 17126
diff changeset
114 r = varargin{end};
fd9a8b1a8768 surfl.m: Overhaul function.
Rik <rik@octave.org>
parents: 17126
diff changeset
115 varargin(end) = [];
fd9a8b1a8768 surfl.m: Overhaul function.
Rik <rik@octave.org>
parents: 17126
diff changeset
116 else
fd9a8b1a8768 surfl.m: Overhaul function.
Rik <rik@octave.org>
parents: 17126
diff changeset
117 ## Default values.
fd9a8b1a8768 surfl.m: Overhaul function.
Rik <rik@octave.org>
parents: 17126
diff changeset
118 r = [0.55, 0.6, 0.4, 10];
fd9a8b1a8768 surfl.m: Overhaul function.
Rik <rik@octave.org>
parents: 17126
diff changeset
119 endif
fd9a8b1a8768 surfl.m: Overhaul function.
Rik <rik@octave.org>
parents: 17126
diff changeset
120
fd9a8b1a8768 surfl.m: Overhaul function.
Rik <rik@octave.org>
parents: 17126
diff changeset
121 ## Check for light vector (lv) argument.
fd9a8b1a8768 surfl.m: Overhaul function.
Rik <rik@octave.org>
parents: 17126
diff changeset
122 have_lv = false;
fd9a8b1a8768 surfl.m: Overhaul function.
Rik <rik@octave.org>
parents: 17126
diff changeset
123 if (isnumeric (varargin{end}))
fd9a8b1a8768 surfl.m: Overhaul function.
Rik <rik@octave.org>
parents: 17126
diff changeset
124 len = numel (varargin{end});
fd9a8b1a8768 surfl.m: Overhaul function.
Rik <rik@octave.org>
parents: 17126
diff changeset
125 lastarg = varargin{end};
fd9a8b1a8768 surfl.m: Overhaul function.
Rik <rik@octave.org>
parents: 17126
diff changeset
126 if (len == 3)
fd9a8b1a8768 surfl.m: Overhaul function.
Rik <rik@octave.org>
parents: 17126
diff changeset
127 lv = lastarg;
fd9a8b1a8768 surfl.m: Overhaul function.
Rik <rik@octave.org>
parents: 17126
diff changeset
128 varargin(end) = [];
fd9a8b1a8768 surfl.m: Overhaul function.
Rik <rik@octave.org>
parents: 17126
diff changeset
129 have_lv = true;
fd9a8b1a8768 surfl.m: Overhaul function.
Rik <rik@octave.org>
parents: 17126
diff changeset
130 elseif (len == 2)
fd9a8b1a8768 surfl.m: Overhaul function.
Rik <rik@octave.org>
parents: 17126
diff changeset
131 [lv(1), lv(2), lv(3)] = sph2cart ((lastarg(1) - 90) * pi/180,
fd9a8b1a8768 surfl.m: Overhaul function.
Rik <rik@octave.org>
parents: 17126
diff changeset
132 lastarg(2) * pi/180,
fd9a8b1a8768 surfl.m: Overhaul function.
Rik <rik@octave.org>
parents: 17126
diff changeset
133 1.0);
fd9a8b1a8768 surfl.m: Overhaul function.
Rik <rik@octave.org>
parents: 17126
diff changeset
134 varargin(end) = [];
fd9a8b1a8768 surfl.m: Overhaul function.
Rik <rik@octave.org>
parents: 17126
diff changeset
135 have_lv = true;
fd9a8b1a8768 surfl.m: Overhaul function.
Rik <rik@octave.org>
parents: 17126
diff changeset
136 endif
fd9a8b1a8768 surfl.m: Overhaul function.
Rik <rik@octave.org>
parents: 17126
diff changeset
137 endif
8450
6c4e2fc14beb Add new 3D plotting function surfl. Add light functions diffuse and specular
Kai Habel
parents:
diff changeset
138
17052
1118d566bcd4 surf.m, surfc.m, surfl.m, surfnorm.m: Update to use new __plt_get_axis_arg__.
Pantxo Diribarne <pantxo.diribarne@gmail.com>
parents: 16754
diff changeset
139 oldfig = ifelse (isempty (hax), [], get (0, "currentfigure"));
8450
6c4e2fc14beb Add new 3D plotting function surfl. Add light functions diffuse and specular
Kai Habel
parents:
diff changeset
140 unwind_protect
17052
1118d566bcd4 surf.m, surfc.m, surfl.m, surfnorm.m: Update to use new __plt_get_axis_arg__.
Pantxo Diribarne <pantxo.diribarne@gmail.com>
parents: 16754
diff changeset
141 hax = newplot (hax);
8450
6c4e2fc14beb Add new 3D plotting function surfl. Add light functions diffuse and specular
Kai Habel
parents:
diff changeset
142
17131
fd9a8b1a8768 surfl.m: Overhaul function.
Rik <rik@octave.org>
parents: 17126
diff changeset
143 htmp = surface (varargin{:});
17052
1118d566bcd4 surf.m, surfc.m, surfl.m, surfnorm.m: Update to use new __plt_get_axis_arg__.
Pantxo Diribarne <pantxo.diribarne@gmail.com>
parents: 16754
diff changeset
144 if (! ishold (hax))
1118d566bcd4 surf.m, surfc.m, surfl.m, surfnorm.m: Update to use new __plt_get_axis_arg__.
Pantxo Diribarne <pantxo.diribarne@gmail.com>
parents: 16754
diff changeset
145 set (hax, "view", [-37.5, 30],
17131
fd9a8b1a8768 surfl.m: Overhaul function.
Rik <rik@octave.org>
parents: 17126
diff changeset
146 "xgrid", "on", "ygrid", "on", "zgrid", "on", "clim", [0 1]);
8450
6c4e2fc14beb Add new 3D plotting function surfl. Add light functions diffuse and specular
Kai Habel
parents:
diff changeset
147 endif
6c4e2fc14beb Add new 3D plotting function surfl. Add light functions diffuse and specular
Kai Habel
parents:
diff changeset
148
8460
e4c9ecb64411 diffuse.m, specular.m, surfl.m: style fixes
John W. Eaton <jwe@octave.org>
parents: 8450
diff changeset
149 ## Get view vector (vv).
17131
fd9a8b1a8768 surfl.m: Overhaul function.
Rik <rik@octave.org>
parents: 17126
diff changeset
150 [az, el] = view ();
16754
022dba56de1e eliminate unnecessary normalisation of view vector in surfl (bug #39241)
Andreas Weber <andy.weber.aw@googlemail.com>
parents: 14868
diff changeset
151 vv = sph2cart ((az - 90) * pi/180.0, el * pi/180.0, 1.0);
8450
6c4e2fc14beb Add new 3D plotting function surfl. Add light functions diffuse and specular
Kai Habel
parents:
diff changeset
152
17131
fd9a8b1a8768 surfl.m: Overhaul function.
Rik <rik@octave.org>
parents: 17126
diff changeset
153 if (! have_lv)
8460
e4c9ecb64411 diffuse.m, specular.m, surfl.m: style fixes
John W. Eaton <jwe@octave.org>
parents: 8450
diff changeset
154 ## Calculate light vector (lv) from view vector.
8450
6c4e2fc14beb Add new 3D plotting function surfl. Add light functions diffuse and specular
Kai Habel
parents:
diff changeset
155 Phi = 45.0 / 180.0 * pi;
8460
e4c9ecb64411 diffuse.m, specular.m, surfl.m: style fixes
John W. Eaton <jwe@octave.org>
parents: 8450
diff changeset
156 R = [cos(Phi), -sin(Phi), 0;
e4c9ecb64411 diffuse.m, specular.m, surfl.m: style fixes
John W. Eaton <jwe@octave.org>
parents: 8450
diff changeset
157 sin(Phi), cos(Phi), 0;
17131
fd9a8b1a8768 surfl.m: Overhaul function.
Rik <rik@octave.org>
parents: 17126
diff changeset
158 0, 0, 1];
8450
6c4e2fc14beb Add new 3D plotting function surfl. Add light functions diffuse and specular
Kai Habel
parents:
diff changeset
159 lv = (R * vv.').';
6c4e2fc14beb Add new 3D plotting function surfl. Add light functions diffuse and specular
Kai Habel
parents:
diff changeset
160 endif
6c4e2fc14beb Add new 3D plotting function surfl. Add light functions diffuse and specular
Kai Habel
parents:
diff changeset
161
14225
f0d903879eaa Replace unnecessary strcmpi calls with strcmp.
Rik <octave@nomad.inbox5.com>
parents: 14223
diff changeset
162 vn = get (htmp, "vertexnormals");
17052
1118d566bcd4 surf.m, surfc.m, surfl.m, surfnorm.m: Update to use new __plt_get_axis_arg__.
Pantxo Diribarne <pantxo.diribarne@gmail.com>
parents: 16754
diff changeset
163 dar = get (hax, "plotboxaspectratio");
8460
e4c9ecb64411 diffuse.m, specular.m, surfl.m: style fixes
John W. Eaton <jwe@octave.org>
parents: 8450
diff changeset
164 vn(:,:,1) *= dar(1);
e4c9ecb64411 diffuse.m, specular.m, surfl.m: style fixes
John W. Eaton <jwe@octave.org>
parents: 8450
diff changeset
165 vn(:,:,2) *= dar(2);
e4c9ecb64411 diffuse.m, specular.m, surfl.m: style fixes
John W. Eaton <jwe@octave.org>
parents: 8450
diff changeset
166 vn(:,:,3) *= dar(3);
8450
6c4e2fc14beb Add new 3D plotting function surfl. Add light functions diffuse and specular
Kai Habel
parents:
diff changeset
167
8460
e4c9ecb64411 diffuse.m, specular.m, surfl.m: style fixes
John W. Eaton <jwe@octave.org>
parents: 8450
diff changeset
168 ## Normalize vn.
8450
6c4e2fc14beb Add new 3D plotting function surfl. Add light functions diffuse and specular
Kai Habel
parents:
diff changeset
169 vn = vn ./ repmat (sqrt (sumsq (vn, 3)), [1, 1, 3]);
14868
5d3a684236b0 maint: Use Octave coding conventions for cuddling parentheses in scripts directory
Rik <octave@nomad.inbox5.com>
parents: 14335
diff changeset
170 [nr, nc] = size (get (htmp, "zdata"));
8450
6c4e2fc14beb Add new 3D plotting function surfl. Add light functions diffuse and specular
Kai Habel
parents:
diff changeset
171
8460
e4c9ecb64411 diffuse.m, specular.m, surfl.m: style fixes
John W. Eaton <jwe@octave.org>
parents: 8450
diff changeset
172 ## Ambient, diffuse, and specular term.
17131
fd9a8b1a8768 surfl.m: Overhaul function.
Rik <rik@octave.org>
parents: 17126
diff changeset
173 cdata = ( r(1) * ones (nr, nc)
8460
e4c9ecb64411 diffuse.m, specular.m, surfl.m: style fixes
John W. Eaton <jwe@octave.org>
parents: 8450
diff changeset
174 + r(2) * diffuse (vn(:,:,1), vn(:,:,2), vn(:,:,3), lv)
e4c9ecb64411 diffuse.m, specular.m, surfl.m: style fixes
John W. Eaton <jwe@octave.org>
parents: 8450
diff changeset
175 + r(3) * specular (vn(:,:,1), vn(:,:,2), vn(:,:,3), lv, vv, r(4)));
8450
6c4e2fc14beb Add new 3D plotting function surfl. Add light functions diffuse and specular
Kai Habel
parents:
diff changeset
176
14225
f0d903879eaa Replace unnecessary strcmpi calls with strcmp.
Rik <octave@nomad.inbox5.com>
parents: 14223
diff changeset
177 set (htmp, "cdata", cdata ./ sum (r(1:3)));
11587
c792872f8942 all script files: untabify and strip trailing whitespace
John W. Eaton <jwe@octave.org>
parents: 11563
diff changeset
178
8450
6c4e2fc14beb Add new 3D plotting function surfl. Add light functions diffuse and specular
Kai Habel
parents:
diff changeset
179 unwind_protect_cleanup
17052
1118d566bcd4 surf.m, surfc.m, surfl.m, surfnorm.m: Update to use new __plt_get_axis_arg__.
Pantxo Diribarne <pantxo.diribarne@gmail.com>
parents: 16754
diff changeset
180 if (! isempty (oldfig))
1118d566bcd4 surf.m, surfc.m, surfl.m, surfnorm.m: Update to use new __plt_get_axis_arg__.
Pantxo Diribarne <pantxo.diribarne@gmail.com>
parents: 16754
diff changeset
181 set (0, "currentfigure", oldfig);
1118d566bcd4 surf.m, surfc.m, surfl.m, surfnorm.m: Update to use new __plt_get_axis_arg__.
Pantxo Diribarne <pantxo.diribarne@gmail.com>
parents: 16754
diff changeset
182 endif
8450
6c4e2fc14beb Add new 3D plotting function surfl. Add light functions diffuse and specular
Kai Habel
parents:
diff changeset
183 end_unwind_protect
6c4e2fc14beb Add new 3D plotting function surfl. Add light functions diffuse and specular
Kai Habel
parents:
diff changeset
184
6c4e2fc14beb Add new 3D plotting function surfl. Add light functions diffuse and specular
Kai Habel
parents:
diff changeset
185 if (nargout > 0)
17131
fd9a8b1a8768 surfl.m: Overhaul function.
Rik <rik@octave.org>
parents: 17126
diff changeset
186 h = htmp;
8450
6c4e2fc14beb Add new 3D plotting function surfl. Add light functions diffuse and specular
Kai Habel
parents:
diff changeset
187 endif
6c4e2fc14beb Add new 3D plotting function surfl. Add light functions diffuse and specular
Kai Habel
parents:
diff changeset
188
6c4e2fc14beb Add new 3D plotting function surfl. Add light functions diffuse and specular
Kai Habel
parents:
diff changeset
189 endfunction
6c4e2fc14beb Add new 3D plotting function surfl. Add light functions diffuse and specular
Kai Habel
parents:
diff changeset
190
14223
ba7a26030214 Use Octave spacing convention in %!test blocks of surface plot functions.
Rik <octave@nomad.inbox5.com>
parents: 14138
diff changeset
191
8450
6c4e2fc14beb Add new 3D plotting function surfl. Add light functions diffuse and specular
Kai Habel
parents:
diff changeset
192 %!demo
14237
11949c9795a0 Revamp %!demos in m-files to use Octave coding conventions on spacing, etc.
Rik <octave@nomad.inbox5.com>
parents: 14225
diff changeset
193 %! clf;
11949c9795a0 Revamp %!demos in m-files to use Octave coding conventions on spacing, etc.
Rik <octave@nomad.inbox5.com>
parents: 14225
diff changeset
194 %! [X,Y,Z] = sombrero ();
11949c9795a0 Revamp %!demos in m-files to use Octave coding conventions on spacing, etc.
Rik <octave@nomad.inbox5.com>
parents: 14225
diff changeset
195 %! colormap (copper (64));
14223
ba7a26030214 Use Octave spacing convention in %!test blocks of surface plot functions.
Rik <octave@nomad.inbox5.com>
parents: 14138
diff changeset
196 %! surfl (X,Y,Z);
8450
6c4e2fc14beb Add new 3D plotting function surfl. Add light functions diffuse and specular
Kai Habel
parents:
diff changeset
197 %! shading interp;
17131
fd9a8b1a8768 surfl.m: Overhaul function.
Rik <rik@octave.org>
parents: 17126
diff changeset
198 %! title ('surfl with defaults');
8450
6c4e2fc14beb Add new 3D plotting function surfl. Add light functions diffuse and specular
Kai Habel
parents:
diff changeset
199
6c4e2fc14beb Add new 3D plotting function surfl. Add light functions diffuse and specular
Kai Habel
parents:
diff changeset
200 %!demo
14237
11949c9795a0 Revamp %!demos in m-files to use Octave coding conventions on spacing, etc.
Rik <octave@nomad.inbox5.com>
parents: 14225
diff changeset
201 %! clf;
11949c9795a0 Revamp %!demos in m-files to use Octave coding conventions on spacing, etc.
Rik <octave@nomad.inbox5.com>
parents: 14225
diff changeset
202 %! [X,Y,Z] = sombrero ();
11949c9795a0 Revamp %!demos in m-files to use Octave coding conventions on spacing, etc.
Rik <octave@nomad.inbox5.com>
parents: 14225
diff changeset
203 %! colormap (copper (64));
11949c9795a0 Revamp %!demos in m-files to use Octave coding conventions on spacing, etc.
Rik <octave@nomad.inbox5.com>
parents: 14225
diff changeset
204 %! [az, el] = view ();
14223
ba7a26030214 Use Octave spacing convention in %!test blocks of surface plot functions.
Rik <octave@nomad.inbox5.com>
parents: 14138
diff changeset
205 %! surfl (X,Y,Z, [az+225,el], [0.2 0.6 0.4 25]);
8450
6c4e2fc14beb Add new 3D plotting function surfl. Add light functions diffuse and specular
Kai Habel
parents:
diff changeset
206 %! shading interp;
17131
fd9a8b1a8768 surfl.m: Overhaul function.
Rik <rik@octave.org>
parents: 17126
diff changeset
207 %! title ('surfl with lighting vector and material properties');
8450
6c4e2fc14beb Add new 3D plotting function surfl. Add light functions diffuse and specular
Kai Habel
parents:
diff changeset
208