Add a useful package (from Source forge) for octave

[CreaPhase.git] / octave_packages / vrml-1.0.13 / vrml_demo_tutorial_4.m

diff --git a/octave_packages/vrml-1.0.13/vrml_demo_tutorial_4.m b/octave_packages/vrml-1.0.13/vrml_demo_tutorial_4.m
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+## Copyright (C) 2002-2009 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/>.
+
+printf (["\n",\
+        "     VRML Mini-HOWTO's second listing\n",\
+        "     Show a helix of ellipsoids and one consisting of cylinders\n\n"]);
+
+printf (["    Reminder of FreeWRL keystrokes and mouse actions :\n"\
+        "      q : quit\n",\
+        "      w : switch to walk mode\n",\
+        "      e : switch to examine mode\n",\
+        "      h : toggle headlights on or off\n",\
+        "      drag left mouse : rotate (examine mode) or translate\n",\
+        "          (walk mode).\n",\
+        "      drag right mouse : zoom (examine mode) or translate\n",\
+        "          (walk mode).\n",\
+        "\n"]);
+
+## Listing 4
+
+x = linspace (0,4*pi,50);
+
+                           # Points on a helix
+
+xx1 = [x/6; sin(x); cos(x)];
+
+
+
+                           # Linked by segments
+
+s1 = vrml_cyl (xx1, "col",kron (ones (3,25),[0.7 0.3]));
+
+
+
+                           # Scaled and represented by spheres
+
+s2 = vrml_points (xx1,"balls");
+
+s2 = vrml_transfo (s2,nan,[pi/2,0,0],[1 0.5 0.5]);
+
+s3 = vrml_Background ("skyColor",[0 0 1]);
+
+vrml_browse ([s1, s2, s3]);
+
+
+
+
+
+