Persistence of Vision(tm) Ray Tracer
POV-Ray(tm) Version 3.00
Legal Information and License
July 2, 1996
GENERAL LICENSE AGREEMENT
THIS NOTICE MUST ACCOMPANY ALL OFFICIAL OR CUSTOM PERSISTENCE OF VISION
FILES. IT MAY NOT BE REMOVED OR MODIFIED. THIS INFORMATION PERTAINS TO
ALL
USE OF THE PACKAGE WORLDWIDE. THIS DOCUMENT SUPERSEDES ALL PREVIOUS
GENERAL LICENSES OR DISTRIBUTION POLICIES. ANY INDIVIDUALS, COMPANIES OR
GROUPS WHO HAVE BEEN GRANTED SPECIAL LICENSES MAY CONTINUE TO DISTRIBUTE
VERSION 2.x BUT MUST RE-APPLY FOR VERSION 3.00 OR LATER.
This document pertains to the use and distribution of the Persistence of
Vision(tm) Ray Tracer a.k.a POV-Ray(tm). It applies to all POV-Ray
program
source files, executable (binary) files, scene files, documentation
files,
help file, bitmaps and INI files contained in official POV-Ray Team(tm)
archives. All of these are referred to here as "the software".
All of this software is Copyright 1991,1996 by the POV-Ray Team(tm).
Although it is distributed as freeware, it is NOT PUBLIC DOMAIN.
The copyrighted package may ONLY be distributed and/or modified according
to the license granted herein. The spirit of the license is to promote
POV-Ray as a standard ray tracer, provide the full POV-Ray package freely
to as many users as possible, prevent POV-Ray users and developers from
being taken advantage of, enhance the life quality of those who come in
contact with POV-Ray. This license was created so these goals could be
realized. You are legally bound to follow these rules, but we hope you
will follow them as a matter of ethics, rather than fear of litigation.
USAGE PROVISIONS
Permission is granted to the user to use the software and associated
files
in this package to create and render images. The use of this software for
the purpose of creating images is completely free. The creator of a scene
file and the image created from the scene file, retains all rights to the
image and scene file they created and may use them for any purpose
commercial or noncommercial.
The user is also granted the right to use the scenes files, fonts,
bitmaps,
and include files distributed in the INCLUDE, TEXSAMPS and POV3DEMO subdirectories in their own scenes. Such permission does not extend to
files
in the POVSCN sub-directory. POVSCN files are for your enjoyment and
education but may not be the basis of any derivative works.
GENERAL RULES FOR ALL DISTRIBUTION
The permission to distribute this package under certain very specific
conditions is granted in advance, provided that the following conditions
are met.
These archives must not be re-archived using a different method without
the
explicit permission of the POV-Team. You may rename the archives only to
meet the file name conventions of your system or to avoid file name
duplications but we ask that you try to keep file names as similar to the
originals as possible. (For example:POVSRC.ZIP to POVSRC30.ZIP)
Ready-to-run unarchived distribution on CD-ROM is also permitted if the
files are arranged in our standard directory or folder structure as
though
it had been properly installed on a hard disk.
You must distribute a FULL PACKAGE of files as described in the next
section. No portion of this package may be separated from the package
and
distributed separately other than under the conditions specified in the
provisions given below.
Non-commercial distribution in which no money or compensation is charged
(such as a user copying the software for a personal friend or colleague)
is
permitted with no other restrictions.
Teachers and educational institutions may also distribute the material to
students and may charge minimal copying costs if the software is to be
used
in a course.
DEFINITION OF "FULL PACKAGE"
POV-Ray is contained in two sets of archives for each hardware platform.
A "full package" consists of either:
1) End user executable archives containing an executable program,
documentation, and sample scenes but no source.
- or 2) Programmer archives containing full source code but no
executable.
Also you must include an archive containing documentation, and
sample scenes. On some platforms, the documentation and sample
scenes are archived separately from the source. Source alone
is not sufficient.
You must have docs and scenes.
POV-Ray is officially distributed for MS-Dos; Windows 32-bit; Linux for
Intel x86 series; Apple Macintosh; Apple PowerPC; SunOS; and Amiga.
Other
systems may be added in the future.
Distributors need not support all platforms but for each platform you
support you must distribute a full package. For example a Macintosh only
BBS need not distribute the Windows versions.
This software may ONLY be bundled with other software packages according
to
the conditions specified in the provisions below.
CONDITIONS FOR SHAREWARE/FREEWARE DISTRIBUTION COMPANIES
Shareware and freeware distribution companies may distribute the software
included in software-only compilations using media such as, but not
limited
to, floppy disk, CD-ROM, tape backup, optical disks, hard disks, or
memory
cards. This section only applies to distributors of collected programs.
Anyone wishing to bundle the package with a shareware product must use
the
commercial bundling rules. Any bundling with books, magazines or other
print media should also use the commercial rules.
You must notify us that you are distributing POV-Ray and must provide us
with information on how to contact you should any support issues arise.
No more than five dollars U.S. ($5) can be charged per disk for the
copying
of this software and the media it is provided on. Space on each disk must
be used as fully as possible. You may not spread the files over more
disks
than are necessary.
Distribution on high volume media such as backup tape or CD-ROM is
permitted if the total cost to the user is no more than $0.08 U.S.
dollars
per megabyte of data. For example a CD-ROM with 600 meg could cost no
more
than $48.00.
CONDITIONS FOR ON-LINE SERVICES AND BBS'S INCLUDING INTERNET
On-line services, BBS's and internet sites may distribute the POV-Ray
software under the conditions in this section. Sites which allow users
to
run POV-Ray from remote locations must use separate provisions in the
section below.
The archives must all be easily available on the service and should be
grouped together in a similar on-line area.
It is strongly requested that sites remove prior versions of POV-Ray to
avoid user confusion and simplify or minimize our support efforts.
The site may only charge standard usage rates for the downloading of this
software. A premium may not be charged for this package. I.E. CompuServe
or
America On-Line may make these archives available to their users, but
they
may only charge regular usage rates for the time required to download.
ONLINE OR REMOTE EXECUTION OF POV-Ray
Some internet sites have been set up so that remote users can actually
run
POV-Ray software on the internet server. Other companies sell CPU time
for
running POV-Ray software on workstations or high-speed computers. Such
use
of POV-Ray software is permitted under the following conditions.
Fees or charges, if any, for such services must be for connect time,
storage or processor usage ONLY. No premium charges may be assessed for
use of POV-Ray beyond that charged for use of other software. Users must
be clearly notified that they are being charged for use of the computer
and
not for use of POV-Ray software.
Users must be prominently informed that they are using POV-Ray software,
that such software is free, and where they can find official POV-Ray
software. Any attempt to obscure the fact that the user is running POVRay
is expressly prohibited.
All files normally available in a full package distribution, especially a
copy of this license and full documentation must be available for
download
or readable online so that users of an online executable have access to
all
of the material of a full user package.
If the POV-Ray software has been modified in any way, it must also follow
the provisions for custom versions below.
CONDITIONS FOR DISTRIBUTION OF CUSTOM VERSIONS
The user is granted the privilege to modify and compile the source code
for
their own personal use in any fashion they see fit. What you do with the
software in your own home is your business.
If the user wishes to distribute a modified version of the software,
documentation or other parts of the package (here after referred to as a
"custom version") they must follow the provisions given below. This
includes any translation of the documentation into other languages or
other
file formats. These license provisions have been established to promote
the growth of POV-Ray and prevent difficulties for users and developers
alike. Please follow them carefully for the benefit of all concerned
when
creating a custom version.
No portion of the POV-Ray source code may be incorporated into another
program unless it is clearly a custom version of POV-Ray that includes
all
of the basic functions of POV-Ray.
All executables, documentation, modified files and descriptions of the
same
must clearly identify themselves as a modified and unofficial version of
POV-Ray. Any attempt to obscure the fact that the user is running POVRay
or to obscure that this is an unofficial version expressly prohibited.
You must provide all POV-Ray support for all users who use your custom
version. You must provide information so that user may contact you for
support for your custom version. The POV-Ray Team is not obligated to
provide you or your users any technical support.
Include contact information in the DISTRIBUTION_MESSAGE macros in the
source file OPTOUT.H and insure that the program prominently displays
this
information. Display all copyright notices and credit screens for the
official version.
Custom versions may only be distributed as freeware. You must make all
of
your modifications to POV-Ray freely and publicly available with FULL
SOURCE CODE to the modified portions of POV-Ray and must freely
distribute
full source to any new parts of the custom version. The goal is that
users
must be able to re-compile the program themselves and to be able to
further
improve the program with their own modifications.
You must provide documentation for any and all modifications that you
have
made to the program that you are distributing. Include clear and obvious
information on how to obtain the official POV-Ray.
The user is encouraged to send enhancements and bug fixes to the POV-Ray
Team, but the team is in no way required to utilize these enhancements
or fixes. By sending material to the team, the contributor asserts that
he owns the materials or has the right to distribute these materials.
He authorizes the team to use the materials any way they like. The
contributor still retains rights to the donated material, but by
donating,
grants unrestricted, irrevocable usage and distribution rights to the
POV-Ray Team. The team doesn't have to use the material, but if we do,
you do not acquire any rights related to POV-Ray. The team will give you
credit as the creator of new code if applicable.
Include a copy of this document.
CONDITIONS FOR COMMERCIAL BUNDLING
Vendors wishing to bundle POV-Ray with commercial software (including
shareware) or with publications must first obtain explicit permission
from
the POV-Ray Team. This includes any commercial software or publications,
such as, but not limited to, magazines, cover-disk distribution, books,
newspapers, or newsletters in print or machine readable form.
The POV-Ray Team will decide if such distribution will be allowed on a
case-by-case basis and may impose certain restrictions as it sees fit.
The minimum terms are given below. Other conditions may be imposed.
Purchasers of your product must not be led to believe that they are
paying for POV-Ray. Any mention of the POV-Ray bundle on the box, in
advertising or in instruction manuals must be clearly marked with a
disclaimer that POV-Ray is free software and can be obtained for free or
nominal cost from various sources.
Include clear and obvious information on how to obtain the official
POV-Ray.
You must provide all POV-Ray support for all users who acquired
POVRay through your product. The POV-Ray Team is not obligated to provide
you or your customers any technical support.
Include a credit page or pages in your documentation for POV-Ray.
If you modify any portion POV-Ray for use with your hardware or
software, you must follow the custom version rules in addition to these
rules.
Include contact and support information for your product.
Include a full user package as described above.
OTHER PROVISIONS
The team permits and encourages the creation of programs, including
commercial packages, which import, export or translate files in the POVRay
Scene Description Language. There are no restrictions on use of the
language itself. We reserve the right to add or remove or change any
part
of the language.
"POV-Ray", "Persistence of Vision", "POV-Ray Team" and "POV-Help" are
trademarks of the POV-Ray Team.
While we do not claim any restrictions on the letters "POV" alone, we
humbly request that you not use POV in the name of your product. Such
use
tends to imply it is a product of the POV-Ray Team. Existing programs
which used "POV" prior to the publication of this document need
not feel guilty for doing so provided that you make it clear that the
program is not the work of the team nor endorsed by us.
REVOCATION OF LICENSE
VIOLATION OF THIS LICENSE IS A VIOLATION OF COPYRIGHT LAWS. IT WILL
RESULT
IN REVOCATION OF ALL DISTRIBUTION PRIVILEGES AND MAY RESULT IN CIVIL OR
CRIMINAL PENALTY.
Such violators who are prohibited from distribution will be identified in
this document.
In this regard, "PC Format", a magazine published by Future Publishing,
Ltd. in the United Kingdom, distributed incomplete versions of POV-Ray
1.0
in violation the license which was effect at the time. They later
attempted to distribute POV-Ray 2.2 without prior permission of the POVRay
Team in violation the license which was in effect at the time. There
is evidence that other Future Publishing companies have also violated
our terms. Therefore "PC Format", and any other magazine, book or CD-ROM
publication owned by Future Publishing is expressly prohibited from any
distribution of POV-Ray software until further notice.
DISCLAIMER
This software is provided as is without any guarantees or warranty.
Although the authors have attempted to find and correct any bugs in the
package, they are not responsible for any damage or losses of any kind
caused by the use or misuse of the package. The authors are under no
obligation to provide service, corrections, or upgrades to this package.
---End of License Information--We sincerely hope you have fun with our program. If you have any
problems
with the program, the team would like to hear about them. Also, if you
have
any comments, questions or enhancements, please contact the POV-Ray Team
on
the CompuServe Information Service in the GO GRAPHICS forums, GRAPHDEV
forum. Also check us out on the internet at http://www.povray.org or
ftp.povray.org. The USENET group comp.graphics.rendering.raytracing is a
great source of information on POV-Ray and related topics.
License enquiries should be made via email and limited technical support
is
available via email to:
Chris Young
POV-Ray Team Coordinator
CIS: 76702,1655
Internet 76702.1655@compuserve.com
The following postal address is only for official license business and
only
if email is impossible.
We do not provide technical support via regular mail, only email. We
don't
care if you don't have a modem or online access. We will not mail you
disks with updated versions. Do not send money.
Chris Young
3119 Cossell Drive
Indianapolis, IN 46224 U.S.A.
The other authors' contact information may be found in the documentation.