path: root/trunk/glagen/3d/GPL.txt

GNU GENERAL PUBLIC LICENSE

Version 2, June 1991

Copyright (C) 1989, 1991 Free Software Foundation, Inc.  
59 Temple Place - Suite 330, Boston, MA  02111-1307, USA

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

Preamble

The licenses for most software are designed to take away your freedom
to share and change it. By contrast, the GNU General Public License is
intended to guarantee your freedom to share and change free
software--to make sure the software is free for all its users. This
General Public License applies to most of the Free Software
Foundation's software and to any other program whose authors commit to
using it. (Some other Free Software Foundation software is covered by
the GNU Library General Public License instead.) You can apply it to
your programs, too.

When we speak of free software, we are referring to freedom, not
price. Our General Public Licenses are designed to make sure that you
have the freedom to distribute copies of free software (and charge for
this service if you wish), that you receive source code or can get it
if you want it, that you can change the software or use pieces of it
in new free programs; and that you know you can do these things.

To protect your rights, we need to make restrictions that forbid
anyone to deny you these rights or to ask you to surrender the
rights. These restrictions translate to certain responsibilities for
you if you distribute copies of the software, or if you modify it.

For example, if you distribute copies of such a program, whether
gratis or for a fee, you must give the recipients all the rights that
you have. You must make sure that they, too, receive or can get the
source code. And you must show them these terms so they know their
rights.

We protect your rights with two steps: (1) copyright the software, and
(2) offer you this license which gives you legal permission to copy,
distribute and/or modify the software.

Also, for each author's protection and ours, we want to make certain
that everyone understands that there is no warranty for this free
software. If the software is modified by someone else and passed on,
we want its recipients to know that what they have is not the
original, so that any problems introduced by others will not reflect
on the original authors' reputations.

Finally, any free program is threatened constantly by software
patents. We wish to avoid the danger that redistributors of a free
program will individually obtain patent licenses, in effect making the
program proprietary. To prevent this, we have made it clear that any
patent must be licensed for everyone's free use or not licensed at
all.

The precise terms and conditions for copying, distribution and
modification follow.  TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION
AND MODIFICATION

0. This License applies to any program or other work which contains a
   notice placed by the copyright holder saying it may be distributed
   under the terms of this General Public License. The "Program",
   below, refers to any such program or work, and a "work based on the
   Program" means either the Program or any derivative work under
   copyright law: that is to say, a work containing the Program or a
   portion of it, either verbatim or with modifications and/or
   translated into another language. (Hereinafter, translation is
   included without limitation in the term "modification".) Each
   licensee is addressed as "you".

   Activities other than copying, distribution and modification are
   not covered by this License; they are outside its scope. The act of
   running the Program is not restricted, and the output from the
   Program is covered only if its contents constitute a work based on
   the Program (independent of having been made by running the
   Program). Whether that is true depends on what the Program does.

1. You may copy and distribute verbatim copies of the Program's source
   code as you receive it, in any medium, provided that you
   conspicuously and appropriately publish on each copy an appropriate
   copyright notice and disclaimer of warranty; keep intact all the
   notices that refer to this License and to the absence of any
   warranty; and give any other recipients of the Program a copy of
   this License along with the Program.

   You may charge a fee for the physical act of transferring a copy,
   and you may at your option offer warranty protection in exchange
   for a fee.

2. You may modify your copy or copies of the Program or any portion of
   it, thus forming a work based on the Program, and copy and
   distribute such modifications or work under the terms of Section 1
   above, provided that you also meet all of these conditions:

    * a) You must cause the modified files to carry prominent notices
      stating that you changed the files and the date of any change.

    * b) You must cause any work that you distribute or publish, that
      in whole or in part contains or is derived from the Program or
      any part thereof, to be licensed as a whole at no charge to all
      third parties under the terms of this License.

    * c) If the modified program normally reads commands interactively
      when run, you must cause it, when started running for such
      interactive use in the most ordinary way, to print or display an
      announcement including an appropriate copyright notice and a
      notice that there is no warranty (or else, saying that you
      provide a warranty) and that users may redistribute the program
      under these conditions, and telling the user how to view a copy
      of this License. (Exception: if the Program itself is
      interactive but does not normally print such an announcement,
      your work based on the Program is not required to print an
      announcement.)

   These requirements apply to the modified work as a whole. If
   identifiable sections of that work are not derived from the
   Program, and can be reasonably considered independent and separate
   works in themselves, then this License, and its terms, do not apply
   to those sections when you distribute them as separate works. But
   when you distribute the same sections as part of a whole which is a
   work based on the Program, the distribution of the whole must be on
   the terms of this License, whose permissions for other licensees
   extend to the entire whole, and thus to each and every part
   regardless of who wrote it.

   Thus, it is not the intent of this section to claim rights or
   contest your rights to work written entirely by you; rather, the
   intent is to exercise the right to control the distribution of
   derivative or collective works based on the Program.

   In addition, mere aggregation of another work not based on the
   Program with the Program (or with a work based on the Program) on a
   volume of a storage or distribution medium does not bring the other
   work under the scope of this License.

3. You may copy and distribute the Program (or a work based on it,
   under Section 2) in object code or executable form under the terms
   of Sections 1 and 2 above provided that you also do one of the
   following:

    * a) Accompany it with the complete corresponding machine-readable
      source code, which must be distributed under the terms of
      Sections 1 and 2 above on a medium customarily used for software
      interchange; or,

    * b) Accompany it with a written offer, valid for at least three
      years, to give any third party, for a charge no more than your
      cost of physically performing source distribution, a complete
      machine-readable copy of the corresponding source code, to be
      distributed under the terms of Sections 1 and 2 above on a
      medium customarily used for software interchange; or,

    * c) Accompany it with the information you received as to the
      offer to distribute corresponding source code. (This alternative
      is allowed only for noncommercial distribution and only if you
      received the program in object code or executable form with such
      an offer, in accord with Subsection b above.)

   The source code for a work means the preferred form of the work for
   making modifications to it. For an executable work, complete source
   code means all the source code for all modules it contains, plus
   any associated interface definition files, plus the scripts used to
   control compilation and installation of the executable. However, as
   a special exception, the source code distributed need not include
   anything that is normally distributed (in either source or binary
   form) with the major components (compiler, kernel, and so on) of
   the operating system on which the executable runs, unless that
   component itself accompanies the executable.

   If distribution of executable or object code is made by offering
   access to copy from a designated place, then offering equivalent
   access to copy the source code from the same place counts as
   distribution of the source code, even though third parties are not
   compelled to copy the source along with the object code.

4. You may not copy, modify, sublicense, or distribute the Program
   except as expressly provided under this License. Any attempt
   otherwise to copy, modify, sublicense or distribute the Program is
   void, and will automatically terminate your rights under this
   License. However, parties who have received copies, or rights, from
   you under this License will not have their licenses terminated so
   long as such parties remain in full compliance.

5. You are not required to accept this License, since you have not
   signed it. However, nothing else grants you permission to modify or
   distribute the Program or its derivative works. These actions are
   prohibited by law if you do not accept this License. Therefore, by
   modifying or distributing the Program (or any work based on the
   Program), you indicate your acceptance of this License to do so,
   and all its terms and conditions for copying, distributing or
   modifying the Program or works based on it.

6. Each time you redistribute the Program (or any work based on the
   Program), the recipient automatically receives a license from the
   original licensor to copy, distribute or modify the Program subject
   to these terms and conditions. You may not impose any further
   restrictions on the recipients' exercise of the rights granted
   herein. You are not responsible for enforcing compliance by third
   parties to this License.

7. If, as a consequence of a court judgment or allegation of patent
   infringement or for any other reason (not limited to patent
   issues), conditions are imposed on you (whether by court order,
   agreement or otherwise) that contradict the conditions of this
   License, they do not excuse you from the conditions of this
   License. If you cannot distribute so as to satisfy simultaneously
   your obligations under this License and any other pertinent
   obligations, then as a consequence you may not distribute the
   Program at all. For example, if a patent license would not permit
   royalty-free redistribution of the Program by all those who receive
   copies directly or indirectly through you, then the only way you
   could satisfy both it and this License would be to refrain entirely
   from distribution of the Program.

   If any portion of this section is held invalid or unenforceable
   under any particular circumstance, the balance of the section is
   intended to apply and the section as a whole is intended to apply
   in other circumstances.

   It is not the purpose of this section to induce you to infringe any
   patents or other property right claims or to contest validity of
   any such claims; this section has the sole purpose of protecting
   the integrity of the free software distribution system, which is
   implemented by public license practices. Many people have made
   generous contributions to the wide range of software distributed
   through that system in reliance on consistent application of that
   system; it is up to the author/donor to decide if he or she is
   willing to distribute software through any other system and a
   licensee cannot impose that choice.

   This section is intended to make thoroughly clear what is believed
   to be a consequence of the rest of this License.

8. If the distribution and/or use of the Program is restricted in
   certain countries either by patents or by copyrighted interfaces,
   the original copyright holder who places the Program under this
   License may add an explicit geographical distribution limitation
   excluding those countries, so that distribution is permitted only
   in or among countries not thus excluded. In such case, this License
   incorporates the limitation as if written in the body of this
   License.

9. The Free Software Foundation may publish revised and/or new
   versions of the 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 a version number of this License which applies to
   it and "any later version", you have the option of following the
   terms and conditions either of that version or of any later version
   published by the Free Software Foundation. If the Program does not
   specify a version number of this License, you may choose any
   version ever published by the Free Software Foundation.

10. If you wish to incorporate parts of the Program into other free
    programs whose distribution conditions are different, write to the
    author to ask for permission. For software which is copyrighted by
    the Free Software Foundation, write to the Free Software
    Foundation; we sometimes make exceptions for this. Our decision
    will be guided by the two goals of preserving the free status of
    all derivatives of our free software and of promoting the sharing
    and reuse of software generally.

NO WARRANTY

11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, 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, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
    FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND
    PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE
    DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR
    OR CORRECTION.

12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN
    WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY
    MODIFY AND/OR REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE
    LIABLE TO YOU FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL,
    INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE 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.

END OF TERMS AND CONDITIONS