Licensing information for Virtual Object System/Interreality 3D
11 October 2007

Virtual Object System/Interreality 3D is Copyright (C) 2007 Peter Amstutz
and others.  The stylized "VOS" logo is Copyright (C) 2006 Andrew Robbins, used 
with permission.

This package contains software derived from a variety of sources.
Where not otherwise stated, the files in this package are licensed to
you under the LGPL v3 or (at your option) any later version.
Individual components derived from other parties are distributed under
the original licenses, detailed later in this file.  Note that not
every component listed here is present in every VOS package; this
depends on the target operating system and features of the specific
package.

---

Summary of components:

- Virtual Object System/Interreality 3D: 
This software is licensed under the LGPL v3, provided below.

- wxWidgets:  Upstream version is licensed under the LGPL v2 "or any
later version".

- Open Dynamics Engine (ODE): Upstream version is licensed under the
LGPL v2 "or any later version".

- The Lightfeather 3D Engine and Lightfeather Physics Engine (LFPE):
Upstream version is distributed under a permissive license, provided
later in this file.

- Boost: Upstream version is distributed under a permissive license,
provided later in this file.

- Crypto++: Upstream version is distributed under a permissive
license, provided later in this file.

- Libpng: Upstream version is distributed under a permissive license,
provided later in this file.

- Libjpeg: Upstream version is distributed under a permissive license,
provided later in this file.

- zlib: Upstream version is distributed under a permissive license,
provided later in this file.

---

Full text of each license is provided below.

---

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  If you convey a covered work, knowingly relying on a patent license,
and the Corresponding Source of the work is not available for anyone
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then you must either (1) cause the Corresponding Source to be so
available, or (2) arrange to deprive yourself of the benefit of the
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consistent with the requirements of this License, to extend the patent
license to downstream recipients.  "Knowingly relying" means you have
actual knowledge that, but for the patent license, your conveying the
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in a country, would infringe one or more identifiable patents in that
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  If, pursuant to or in connection with a single transaction or
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you grant is automatically extended to all recipients of the covered
work and works based on it.

  A patent license is "discriminatory" if it does not include within
the scope of its coverage, prohibits the exercise of, or is
conditioned on the non-exercise of one or more of the rights that are
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work if you are a party to an arrangement with a third party that is
in the business of distributing software, under which you make payment
to the third party based on the extent of your activity of conveying
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or that patent license was granted, prior to 28 March 2007.

  Nothing in this License shall be construed as excluding or limiting
any implied license or other defenses to infringement that may
otherwise be available to you under applicable patent law.

  12. No Surrender of Others' Freedom.

  If conditions are imposed on you (whether by court order, agreement or
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excuse you from the conditions of this License.  If you cannot convey a
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not convey it at all.  For example, if you agree to terms that obligate you
to collect a royalty for further conveying from those to whom you convey
the Program, the only way you could satisfy both those terms and this
License would be to refrain entirely from conveying the Program.

  13. Use with the GNU Affero General Public License.

  Notwithstanding any other provision of this License, you have
permission to link or combine any covered work with a work licensed
under version 3 of the GNU Affero General Public License into a single
combined work, and to convey the resulting work.  The terms of this
License will continue to apply to the part which is the covered work,
but the special requirements of the GNU Affero General Public License,
section 13, concerning interaction through a network will apply to the
combination as such.

  14. Revised Versions of this License.

  The Free Software Foundation may publish revised and/or new versions of
the GNU General Public License from time to time.  Such new versions will
be similar in spirit to the present version, but may differ in detail to
address new problems or concerns.

  Each version is given a distinguishing version number.  If the
Program specifies that a certain numbered version of the GNU General
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version or of any later version published by the Free Software
Foundation.  If the Program does not specify a version number of the
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by the Free Software Foundation.

  If the Program specifies that a proxy can decide which future
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to choose that version for the Program.

  Later license versions may give you additional or different
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later version.

  15. Disclaimer of Warranty.

  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
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IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
ALL NECESSARY SERVICING, REPAIR OR CORRECTION.

  16. Limitation of Liability.

  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
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USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
SUCH DAMAGES.

  17. Interpretation of Sections 15 and 16.

  If the disclaimer of warranty and limitation of liability provided
above cannot be given local legal effect according to their terms,
reviewing courts shall apply local law that most closely approximates
an absolute waiver of all civil liability in connection with the
Program, unless a warranty or assumption of liability accompanies a
copy of the Program in return for a fee.

                     END OF TERMS AND CONDITIONS

            How to Apply These Terms to Your New Programs

  If you develop a new program, and you want it to be of the greatest
possible use to the public, the best way to achieve this is to make it
free software which everyone can redistribute and change under these terms.

  To do so, attach the following notices to the program.  It is safest
to attach them to the start of each source file to most effectively
state the exclusion of warranty; and each file should have at least
the "copyright" line and a pointer to where the full notice is found.

    <one line to give the program's name and a brief idea of what it does.>
    Copyright (C) <year>  <name of author>

    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/>.

Also add information on how to contact you by electronic and paper mail.

  If the program does terminal interaction, make it output a short
notice like this when it starts in an interactive mode:

    <program>  Copyright (C) <year>  <name of author>
    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
    This is free software, and you are welcome to redistribute it
    under certain conditions; type `show c' for details.

The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License.  Of course, your program's commands
might be different; for a GUI interface, you would use an "about box".

  You should also get your employer (if you work as a programmer) or school,
if any, to sign a "copyright disclaimer" for the program, if necessary.
For more information on this, and how to apply and follow the GNU GPL, see
<http://www.gnu.org/licenses/>.

  The GNU General Public License does not permit incorporating your program
into proprietary programs.  If your program is a subroutine library, you
may consider it more useful to permit linking proprietary applications with
the library.  If this is what you want to do, use the GNU Lesser General
Public License instead of this License.  But first, please read
<http://www.gnu.org/philosophy/why-not-lgpl.html>.

---

                wxWindows Library Licence, Version 3.1
                ======================================

  Copyright (c) 1998-2005 Julian Smart, Robert Roebling et al

  Everyone is permitted to copy and distribute verbatim copies
  of this licence document, but changing it is not allowed.

                       WXWINDOWS LIBRARY LICENCE
     TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
  
  This library is free software; you can redistribute it and/or modify it
  under the terms of the GNU Library General Public Licence as published by
  the Free Software Foundation; either version 2 of the Licence, or (at
  your option) any later version.
  
  This library 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 Library
  General Public Licence for more details.

  You should have received a copy of the GNU Library General Public Licence
  along with this software, usually in a file named COPYING.LIB.  If not,
  write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
  Boston, MA 02111-1307 USA.

  EXCEPTION NOTICE

  1. As a special exception, the copyright holders of this library give
  permission for additional uses of the text contained in this release of
  the library as licenced under the wxWindows Library Licence, applying
  either version 3.1 of the Licence, or (at your option) any later version of
  the Licence as published by the copyright holders of version
  3.1 of the Licence document.

  2. The exception is that you may use, copy, link, modify and distribute
  under your own terms, binary object code versions of works based
  on the Library.

  3. If you copy code from files distributed under the terms of the GNU
  General Public Licence or the GNU Library General Public Licence into a
  copy of this library, as this licence permits, the exception does not
  apply to the code that you add in this way.  To avoid misleading anyone as
  to the status of such modified files, you must delete this exception
  notice from such code and/or adjust the licensing conditions notice
  accordingly.

  4. If you write modifications of your own for this library, it is your
  choice whether to permit this exception to apply to your modifications. 
  If you do not wish that, you must delete the exception notice from such
  code and/or adjust the licensing conditions notice accordingly.

---

The Open Dynamics Engine (ODE), Copyright (C) 2001-2006 Russell L. Smith.

ODE is a free, industrial quality library for simulating articulated
rigid body dynamics - for example ground vehicles, legged creatures,
and moving objects in VR environments. It is fast, flexible, robust
and platform independent, with advanced joints, contact with friction,
and built-in collision detection.

This library is free software; you can redistribute it and/or
modify it under the terms of EITHER:
  (1) The GNU Lesser General Public License as published by the Free
      Software Foundation; either version 2.1 of the License, or (at
      your option) any later version. The text of the GNU Lesser
      General Public License is included with this library in the
      file LICENSE.TXT.
  (2) The BSD-style license that is included with this library in
      the file LICENSE-BSD.TXT.

This library 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 files
LICENSE.TXT and LICENSE-BSD.TXT for more details.

---

Copyright (c) 2004-2005 The Lightfeather Maintainers and Contributors.

Please note that Lightfeather is based in part on the work of the Independent JPEG Group, the zlib and libpng.
This means that if you use Lightfeather in your product, you must acknowledge somewhere in your documentation
that you've used the Independent JPEG Group's code. It would also be nice to mention that you use Lightfeather, libpng and the zlib.

Lightfeather uses buildsys (c) 2004-2005 Akita Bright-Holloway to enable easy creation of IDE-project files as well as a Makefile for unix-based systems.

This software is provided 'as-is', without any express or implied warranty.
In no event will the authors be held liable for any damages arising from the use of this software.

Permission is granted to anyone to use this software for any purpose, including commercial applications,
and to alter it and redistribute it freely, subject to the following restrictions:

    1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software.
       If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required.
    2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
    3. This notice may not be removed or altered from any source distribution.

---

Copyright (c) 2007 by The lf_ode Maintainers and Contributors.

Please note that lf_ode is based in part on the work of Lightfeather (lf.mmdevel.de) and ODE (Open Dynamic Engine, www.ode.org).
So please also review the file COPYING of the Lightfeather library.

lf_ode uses buildsys (c) 2004-2005 Akita Bright-Holloway to enable easy creation of IDE-project files as well as a Makefile for unix-based systems.

This software is provided 'as-is', without any express or implied warranty.
In no event will the authors be held liable for any damages arising from the use of this software.

Permission is granted to anyone to use this software for any purpose, including commercial applications,
and to alter it and redistribute it freely, subject to the following restrictions:

    1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software.
       If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required.
    2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
    3. This notice may not be removed or altered from any source distribution.

---

Boost Software License - Version 1.0 - August 17th, 2003

Permission is hereby granted, free of charge, to any person or organization
obtaining a copy of the software and accompanying documentation covered by
this license (the "Software") to use, reproduce, display, distribute,
execute, and transmit the Software, and to prepare derivative works of the
Software, and to permit third-parties to whom the Software is furnished to
do so, all subject to the following:

The copyright notices in the Software and this entire statement, including
the above license grant, this restriction and the following disclaimer,
must be included in all copies of the Software, in whole or in part, and
all derivative works of the Software, unless such copies or derivative
works are solely in the form of machine-executable object code generated by
a source language processor.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
DEALINGS IN THE SOFTWARE.

---

Compilation Copyright (c) 1995-2006 by Wei Dai.  All rights reserved.
This copyright applies only to this software distribution package 
as a compilation, and does not imply a copyright on any particular 
file in the package.

The following files are copyrighted by their respective original authors,
and their use is subject to additional licenses included in these files.

mars.cpp - Copyright 1998 Brian Gladman.

All other files in this compilation are placed in the public domain by
Wei Dai and other contributors.

I would like to thank the following authors for placing their works into
the public domain:

Joan Daemen - 3way.cpp
Leonard Janke - cast.cpp, seal.cpp
Steve Reid - cast.cpp
Phil Karn - des.cpp
Michael Paul Johnson - diamond.cpp
Andrew M. Kuchling - md2.cpp, md4.cpp
Colin Plumb - md5.cpp, md5mac.cpp
Seal Woods - rc6.cpp
Chris Morgan - rijndael.cpp
Paulo Baretto - rijndael.cpp, skipjack.cpp, square.cpp
Richard De Moliner - safer.cpp
Matthew Skala - twofish.cpp
Kevin Springle - camellia.cpp, shacal2.cpp, ttmac.cpp, whrlpool.cpp, ripemd.cpp

Permission to use, copy, modify, and distribute this compilation for
any purpose, including commercial applications, is hereby granted
without fee, subject to the following restrictions:

1. Any copy or modification of this compilation in any form, except
in object code form as part of an application software, must include
the above copyright notice and this license.

2. Users of this software agree that any modification or extension
they provide to Wei Dai will be considered public domain and not
copyrighted unless it includes an explicit copyright notice.

3. Wei Dai makes no warranty or representation that the operation of the
software in this compilation will be error-free, and Wei Dai is under no
obligation to provide any services, by way of maintenance, update, or
otherwise.  THE SOFTWARE AND ANY DOCUMENTATION ARE PROVIDED "AS IS"
WITHOUT EXPRESS OR IMPLIED WARRANTY INCLUDING, BUT NOT LIMITED TO,
THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE. IN NO EVENT WILL WEI DAI OR ANY OTHER CONTRIBUTOR BE LIABLE FOR
DIRECT, INCIDENTAL OR CONSEQUENTIAL DAMAGES, EVEN IF
ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.

4. Users will not use Wei Dai or any other contributor's name in any 
publicity or advertising, without prior written consent in each case.

5. Export of this software from the United States may require a
specific license from the United States Government.  It is the
responsibility of any person or organization contemplating export
to obtain such a license before exporting.

6. Certain parts of this software may be protected by patents.  It
is the users' responsibility to obtain the appropriate
licenses before using those parts.

If this compilation is used in object code form in an application
software, acknowledgement of the author is not required but would be
appreciated. The contribution of any useful modifications or extensions
to Wei Dai is not required but would also be appreciated.

---

This copy of the libpng notices is provided for your convenience.  In case of
any discrepancy between this copy and the notices in the file png.h that is
included in the libpng distribution, the latter shall prevail.

COPYRIGHT NOTICE, DISCLAIMER, and LICENSE:

If you modify libpng you may insert additional notices immediately following
this sentence.

libpng versions 1.2.6, August 15, 2004, through 1.2.20, September 8, 2007, are
Copyright (c) 2004, 2006-2007 Glenn Randers-Pehrson, and are
distributed according to the same disclaimer and license as libpng-1.2.5
with the following individual added to the list of Contributing Authors

   Cosmin Truta

libpng versions 1.0.7, July 1, 2000, through 1.2.5 - October 3, 2002, are
Copyright (c) 2000-2002 Glenn Randers-Pehrson, and are
distributed according to the same disclaimer and license as libpng-1.0.6
with the following individuals added to the list of Contributing Authors

   Simon-Pierre Cadieux
   Eric S. Raymond
   Gilles Vollant

and with the following additions to the disclaimer:

   There is no warranty against interference with your enjoyment of the
   library or against infringement.  There is no warranty that our
   efforts or the library will fulfill any of your particular purposes
   or needs.  This library is provided with all faults, and the entire
   risk of satisfactory quality, performance, accuracy, and effort is with
   the user.

libpng versions 0.97, January 1998, through 1.0.6, March 20, 2000, are
Copyright (c) 1998, 1999 Glenn Randers-Pehrson, and are
distributed according to the same disclaimer and license as libpng-0.96,
with the following individuals added to the list of Contributing Authors:

   Tom Lane
   Glenn Randers-Pehrson
   Willem van Schaik

libpng versions 0.89, June 1996, through 0.96, May 1997, are
Copyright (c) 1996, 1997 Andreas Dilger
Distributed according to the same disclaimer and license as libpng-0.88,
with the following individuals added to the list of Contributing Authors:

   John Bowler
   Kevin Bracey
   Sam Bushell
   Magnus Holmgren
   Greg Roelofs
   Tom Tanner

libpng versions 0.5, May 1995, through 0.88, January 1996, are
Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
For the purposes of this copyright and license, "Contributing Authors"
is defined as the following set of individuals:

   Andreas Dilger
   Dave Martindale
   Guy Eric Schalnat
   Paul Schmidt
   Tim Wegner

The PNG Reference Library is supplied "AS IS".  The Contributing Authors
and Group 42, Inc. disclaim all warranties, expressed or implied,
including, without limitation, the warranties of merchantability and of
fitness for any purpose.  The Contributing Authors and Group 42, Inc.
assume no liability for direct, indirect, incidental, special, exemplary,
or consequential damages, which may result from the use of the PNG
Reference Library, even if advised of the possibility of such damage.

Permission is hereby granted to use, copy, modify, and distribute this
source code, or portions hereof, for any purpose, without fee, subject
to the following restrictions:

1. The origin of this source code must not be misrepresented.

2. Altered versions must be plainly marked as such and must not
   be misrepresented as being the original source.

3. This Copyright notice may not be removed or altered from any
   source or altered source distribution.

The Contributing Authors and Group 42, Inc. specifically permit, without
fee, and encourage the use of this source code as a component to
supporting the PNG file format in commercial products.  If you use this
source code in a product, acknowledgment is not required but would be
appreciated.

A "png_get_copyright" function is available, for convenient use in "about"
boxes and the like:

   printf("%s",png_get_copyright(NULL));

Also, the PNG logo (in PNG format, of course) is supplied in the
files "pngbar.png" and "pngbar.jpg (88x31) and "pngnow.png" (98x31).

Libpng is OSI Certified Open Source Software.  OSI Certified Open Source is a
certification mark of the Open Source Initiative.

Glenn Randers-Pehrson
glennrp at users.sourceforge.net
September 8, 2007

---

In plain English:

1. We don't promise that this software works.  (But if you find any bugs,
   please let us know!)
2. You can use this software for whatever you want.  You don't have to pay us.
3. You may not pretend that you wrote this software.  If you use it in a
   program, you must acknowledge somewhere in your documentation that
   you've used the IJG code.

In legalese:

The authors make NO WARRANTY or representation, either express or implied,
with respect to this software, its quality, accuracy, merchantability, or
fitness for a particular purpose.  This software is provided "AS IS", and you,
its user, assume the entire risk as to its quality and accuracy.

This software is copyright (C) 1991-1998, Thomas G. Lane.
All Rights Reserved except as specified below.

Permission is hereby granted to use, copy, modify, and distribute this
software (or portions thereof) for any purpose, without fee, subject to these
conditions:
(1) If any part of the source code for this software is distributed, then this
README file must be included, with this copyright and no-warranty notice
unaltered; and any additions, deletions, or changes to the original files
must be clearly indicated in accompanying documentation.
(2) If only executable code is distributed, then the accompanying
documentation must state that "this software is based in part on the work of
the Independent JPEG Group".
(3) Permission for use of this software is granted only if the user accepts
full responsibility for any undesirable consequences; the authors accept
NO LIABILITY for damages of any kind.

These conditions apply to any software derived from or based on the IJG code,
not just to the unmodified library.  If you use our work, you ought to
acknowledge us.

Permission is NOT granted for the use of any IJG author's name or company name
in advertising or publicity relating to this software or products derived from
it.  This software may be referred to only as "the Independent JPEG Group's
software".

We specifically permit and encourage the use of this software as the basis of
commercial products, provided that all warranty or liability claims are
assumed by the product vendor.

---

Copyright notice:

  Copyright (C) 1995-1998 Jean-loup Gailly and Mark Adler

  This software is provided 'as-is', without any express or implied
  warranty.  In no event will the authors be held liable for any damages
  arising from the use of this software.

  Permission is granted to anyone to use this software for any purpose,
  including commercial applications, and to alter it and redistribute it
  freely, subject to the following restrictions:

  1. The origin of this software must not be misrepresented; you must not
     claim that you wrote the original software. If you use this software
     in a product, an acknowledgment in the product documentation would be
     appreciated but is not required.
  2. Altered source versions must be plainly marked as such, and must not be
     misrepresented as being the original software.
  3. This notice may not be removed or altered from any source distribution.

  Jean-loup Gailly        Mark Adler
  jloup@gzip.org          madler@alumni.caltech.edu