Add a useful package (from Source forge) for octave

[CreaPhase.git] / octave_packages / vrml-1.0.13 / test_vmesh.m

diff --git a/octave_packages/vrml-1.0.13/test_vmesh.m b/octave_packages/vrml-1.0.13/test_vmesh.m
new file mode 100644 (file)
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+++ b/octave_packages/vrml-1.0.13/test_vmesh.m
@@ -0,0 +1,64 @@
+## Copyright (C) 2002 Etienne Grossmann <etienne@egdn.net>
+##
+## This program 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.
+##
+## This program 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
+## this program; if not, see <http://www.gnu.org/licenses/>.
+
+###key test_vmesh
+##
+## Test vmesh.m
+
+printf ("test_vmesh : \nDisplay a surface.\n");
+
+R = 41;
+C = 26;
+
+[x,y] = meshgrid (linspace (-1,1,C), linspace (-1,1,R));
+
+z = (cos (x*2*pi) + y.^2)/3;
+
+vmesh (z);
+printf ("Press a key.\n"); pause;
+
+
+printf ("The same surface, with holes in it.\n");
+
+z(3,3) = nan;                  # Bore a hole
+                               # Bore more holes
+z(1+floor(rand(1,5+R*C/30)*R*C)) = nan;
+
+                               # Try texture as a file, an "ims" or a
+                               # matrix. 
+## tex = "octave-mylib/tools/imgio/test_images/test_col.xpm";
+## tex = ims_load ("octave-mylib/tools/imgio/test_images/test_col.jpg");
+## tex = kron (ones (4),eye(2));
+
+vmesh (z);
+
+printf ("Press a key.\n"); pause;
+
+printf (["The same surface, with checkered stripes ",\
+        "(see the 'checker' option).\n"]);
+
+vmesh (z,"checker",-[6,5]);
+
+printf ("Press a key.\n"); pause;
+
+printf (["The same surface, with z-dependent coloring (see 'zrb', 'zgrey'\n",\
+        "  and 'zcol' options)\n"]);
+
+vmesh (z,"zrb");
+
+printf ("That's it!\n");
+
+
+