annotate scripts/plot/appearance/lighting.m @ 27978:a4268efb7334

maint: Eliminate single "Author:" lines from code base. * color-picker.cc, color-picker.h, octave-qscintilla.cc, octave-qscintilla.h, octave-txt-lexer.cc, octave-txt-lexer.h, balance.cc, kron.cc, lookup.cc, ls-hdf5.cc, ls-mat5.cc, ls-oct-text.cc, sylvester.cc, tsearch.cc, jit-ir.cc, jit-ir.h, jit-typeinfo.cc, jit-typeinfo.h, jit-util.cc, jit-util.h, pt-jit.cc, pt-jit.h, Array-jit.cc, bsxfun.h, url-transfer.cc, url-transfer.h, acosd.m, acotd.m, acscd.m, asecd.m, asind.m, atand.m, cosd.m, cotd.m, cscd.m, secd.m, sind.m, tand.m, cart2pol.m, cart2sph.m, curl.m, del2.m, divergence.m, flip.m, pol2cart.m, randi.m, sortrows.m, sph2cart.m, griddata3.m, griddatan.m, rectint.m, voronoi.m, dialog.m, guidata.m, guihandles.m, __file_filter__.m, __fltk_file_filter__.m, __get_funcname__.m, __is_function__.m, __uigetdir_fltk__.m, __uigetfile_fltk__.m, __uiobject_split_args__.m, __uiputfile_fltk__.m, uibuttongroup.m, uicontextmenu.m, uicontrol.m, uigetdir.m, uigetfile.m, uimenu.m, uipanel.m, uipushtool.m, uiputfile.m, uiresume.m, uitoggletool.m, uitoolbar.m, uiwait.m, doc.m, autumn.m, bone.m, cmpermute.m, cmunique.m, cool.m, copper.m, cubehelix.m, flag.m, frame2im.m, hot.m, hsv.m, hsv2rgb.m, im2frame.m, imfinfo.m, imformats.m, iscolormap.m, jet.m, pink.m, prism.m, __imfinfo__.m, rainbow.m, rgb2hsv.m, spinmap.m, spring.m, viridis.m, white.m, winter.m, importdata.m, strmatch.m, bandwidth.m, isbanded.m, isdiag.m, istril.m, istriu.m, krylov.m, linsolve.m, logm.m, lscov.m, subspace.m, bunzip2.m, compare_versions.m, edit.m, fullfile.m, getfield.m, gunzip.m, inputParser.m, license.m, nargchk.m, narginchk.m, nthargout.m, python.m, setfield.m, tar.m, unpack.m, ver.m, zip.m, odeplot.m, fminbnd.m, fminunc.m, fsolve.m, fzero.m, glpk.m, humps.m, pathdef.m, savepath.m, diffuse.m, lighting.m, material.m, shading.m, specular.m, contour.m, ellipsoid.m, isocaps.m, isocolors.m, isonormals.m, isosurface.m, light.m, pcolor.m, __interp_cube__.m, __marching_cube__.m, __patch__.m, __stem__.m, reducepatch.m, reducevolume.m, ribbon.m, shrinkfaces.m, slice.m, stem.m, surf.m, surfl.m, tetramesh.m, waterfall.m, __actual_axis_position__.m, __next_line_color__.m, allchild.m, figure.m, findall.m, findobj.m, gcf.m, hggroup.m, isprop.m, ndgrid.m, __add_default_menu__.m, saveas.m, __splinefit__.m, prefdir.m, preferences.m, profexplore.m, profexport.m, profile.m, profshow.m, setdiff.m, freqz.m, freqz_plot.m, sinc.m, unwrap.m, pcr.m, qmr.m, sprandn.m, betaincinv.m, cosint.m, ellipke.m, factor.m, gammaincinv.m, legendre.m, nchoosek.m, primes.m, invhilb.m, toeplitz.m, erase.m, mat2str.m, strtrim.m, validatestring.m, fail.m, compare_plot_demos.m, dump_demos.m, html_compare_plot_demos.m, addtodate.m, datenum.m, jit.tst: Eliminate single "Author:" lines from code base.
author Rik <rik@octave.org>
date Tue, 21 Jan 2020 12:53:13 -0800
parents bd51beb6205e
children 3cac3ceb9629 0a5b15007766
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 ########################################################################
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2 ##
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3 ## Copyright (C) 2016-2020 The Octave Project Developers
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4 ##
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5 ## See the file COPYRIGHT.md in the top-level directory of this
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6 ## distribution or <https://octave.org/copyright/>.
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7 ##
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8 ## This file is part of Octave.
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9 ##
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10 ## Octave is free software: you can redistribute it and/or modify it
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11 ## under the terms of the GNU General Public License as published by
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12 ## the Free Software Foundation, either version 3 of the License, or
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13 ## (at your option) any later version.
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14 ##
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15 ## Octave is distributed in the hope that it will be useful, but
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16 ## WITHOUT ANY WARRANTY; without even the implied warranty of
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17 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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18 ## GNU General Public License for more details.
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19 ##
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20 ## You should have received a copy of the GNU General Public License
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21 ## along with Octave; see the file COPYING. If not, see
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22 ## <https://www.gnu.org/licenses/>.
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23 ##
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24 ########################################################################
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25
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26 ## -*- texinfo -*-
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27 ## @deftypefn {} {} lighting (@var{type})
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28 ## @deftypefnx {} {} lighting (@var{hax}, @var{type})
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29 ## Set the lighting of patch or surface graphic objects.
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30 ##
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31 ## Valid arguments for @var{type} are
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32 ##
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33 ## @table @asis
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34 ## @item @qcode{"flat"}
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35 ## Draw objects with faceted lighting effects.
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36 ##
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37 ## @item @qcode{"gouraud"}
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38 ## Draw objects with linear interpolation of the lighting effects between the
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39 ## vertices.
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40 ##
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41 ## @item @qcode{"none"}
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42 ## Draw objects without light and shadow effects.
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43 ## @end table
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44 ##
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45 ## If the first argument @var{hax} is an axes handle, then change the lighting
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46 ## effects of objects in this axes, rather than the current axes returned by
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47 ## @code{gca}.
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48 ##
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49 ## The lighting effects are only visible if at least one light object is
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50 ## present and visible in the same axes.
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51 ##
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52 ## @seealso{light, fill, mesh, patch, pcolor, surf, surface, shading}
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53 ## @end deftypefn
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54
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55 function lighting (varargin)
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56
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57 [hax, varargin, nargin] = __plt_get_axis_arg__ ("lighting", varargin{:});
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58
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59 if (nargin != 1)
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60 print_usage ();
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61 endif
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62
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63 mode = varargin{1};
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64 if (! ischar (mode))
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65 error ("lighting: MODE must be a string");
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66 elseif (! any (strcmpi (mode, {"flat", "gouraud", "none"})))
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67 error ('lighting: Invalid MODE "%s"', mode);
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68 endif
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69
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70 if (isempty (hax))
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71 hax = gca ();
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72 endif
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73
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74 ## Find all patch and surface objects that are descendants of hax
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75 ## and which are not part of a contour plot hggroup.
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76 hlist = [];
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77 kids = get (hax, "children");
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78 while (! isempty (kids))
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79 types = get (kids, "type");
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80 hlist = [hlist; kids(strcmp(types, "patch"))];
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81 hlist = [hlist; kids(strcmp(types, "surface"))];
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82 parents = kids(strcmp (types, "axes"));
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83 hglist = kids(strcmp (types, "hggroup"));
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84
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85 kids = get (parents, "children");
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86 for i = 1 : numel (hglist)
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87 props = get (hglist(i));
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88 if (! isfield (props, "levelstep"))
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89 kids = [kids; get(hglist(i), "children")];
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90 endif
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91 endfor
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92
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93 endwhile
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94
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95 ## FIXME: This is the old, simple code.
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96 ## Unfortunately, it also lights contour plots which is not desirable.
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97 ##hp = findobj (hax, "type", "patch");
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98 ##hs = findobj (hax, "type", "surface");
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99 ##hlist = [hp(:); hs(:)];
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100
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101 if (isempty (hlist))
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102 return;
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103 endif
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104
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105 ## Change "EdgeLighting" for meshes instead of "FaceLighting"
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106 fc = get (hlist, "facecolor");
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107 is_mesh = strcmp (fc, "none");
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108 if (! iscell (fc))
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109 fc = {fc};
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110 endif
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111 bc = get (hax, "color");
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112 if (strcmp (bc, "none"))
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113 if (isprop (get (hax, "parent"), "color"))
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114 bc = get (get (hax, "parent"), "color");
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115 endif
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116 if (isempty (bc) || strcmp (bc, "none"))
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117 bc = [1 1 1];
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118 endif
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119 endif
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120 is_mesh = is_mesh | cellfun (@(x) isequal (x, bc), fc);
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121
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122 set (hlist(! is_mesh), "facelighting", mode, "edgelighting", "none");
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123 set (hlist(is_mesh), "edgelighting", mode, "facelighting", "none");
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124
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125 endfunction
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126
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127
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128 %!demo
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129 %! clf;
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130 %! colormap ("default");
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131 %! sombrero ();
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132 %! shading flat
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133 %! lighting flat
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134 %! light ();
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135 %! title ("shading flat - lighting flat");
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136
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137 %!demo
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138 %! clf;
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139 %! colormap ("default");
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140 %! sombrero ();
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141 %! shading interp
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142 %! lighting gouraud
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143 %! light ();
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144 %! title ("shading interp - lighting gouraud");
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145
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146 %!demo
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147 %! clf;
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148 %! colormap ("default");
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149 %! pcolor (peaks ());
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150 %! shading flat
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151 %! lighting flat
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152 %! light ();
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153 %! view (3)
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154 %! title ("shading flat - lighting flat");
22140
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155
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156 %!demo
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157 %! clf;
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158 %! colormap ("default");
22140
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159 %! pcolor (peaks ());
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160 %! shading interp
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161 %! lighting gouraud
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162 %! light ();
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163 %! view (3)
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164 %! title ("shading interp - lighting gouraud");
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165
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166 %!demo
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167 %! clf;
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168 %! colormap ("default");
22140
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169 %! mesh (sombrero ());
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170 %! shading flat
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171 %! lighting flat
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172 %! light ();
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173 %! title ("shading flat - lighting flat");
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174
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175 %!demo
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176 %! clf;
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177 %! colormap ("default");
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178 %! mesh (sombrero ());
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179 %! shading interp
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180 %! lighting gouraud
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181 %! light ();
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182 %! title ("shading interp - lighting gouraud");
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183
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184 %!test
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185 %! hf = figure ("visible", "off");
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186 %! unwind_protect
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187 %! ha = axes;
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188 %! hm = mesh (sombrero ());
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189 %! hp = patch;
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190 %! hs = surface;
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191 %! lighting flat
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192 %! assert (get (hp, "facelighting"), "flat");
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193 %! assert (get (hs, "facelighting"), "flat");
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194 %! assert (get (hp, "edgelighting"), "none");
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195 %! assert (get (hs, "edgelighting"), "none");
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196 %! assert (get (hm, "edgelighting"), "flat");
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197 %! lighting gouraud
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198 %! assert (get (hp, "facelighting"), "gouraud");
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199 %! assert (get (hs, "facelighting"), "gouraud");
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200 %! assert (get (hp, "edgelighting"), "none");
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201 %! assert (get (hs, "edgelighting"), "none");
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202 %! assert (get (hm, "edgelighting"), "gouraud");
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203 %! lighting none
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204 %! assert (get (hp, "facelighting"), "none");
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205 %! assert (get (hs, "facelighting"), "none");
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206 %! assert (get (hp, "edgelighting"), "none");
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207 %! assert (get (hs, "edgelighting"), "none");
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208 %! assert (get (hm, "edgelighting"), "none");
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209 %! lighting (ha, "flat")
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210 %! assert (get (hp, "facelighting"), "flat");
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211 %! assert (get (hs, "facelighting"), "flat");
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212 %! assert (get (hp, "edgelighting"), "none");
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213 %! assert (get (hs, "edgelighting"), "none");
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214 %! assert (get (hm, "edgelighting"), "flat");
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215 %! unwind_protect_cleanup
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216 %! close (hf);
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217 %! end_unwind_protect
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218
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219 ## Test on axes which has no patch or mesh objects
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220 %!test
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221 %! hf = figure ("visible", "off");
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222 %! unwind_protect
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223 %! lighting flat
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224 %! unwind_protect_cleanup
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225 %! close (hf);
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226 %! end_unwind_protect
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227
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228 %!error lighting ()
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229 %!error lighting (1, 2, "flat")
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230 %!error <MODE must be a string> lighting (-1)
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231 %!error <MODE must be a string> lighting ({})
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232 %!error <Invalid MODE "foo"> lighting foo
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233 %!error <Invalid call to lighting> lighting (-1, "flat")