Re: [License-discuss] MakeHuman, CC0 and AGPL

2017-10-25 Thread Lindsay Patten

Thank you for your quick response!

Can you clarify whether you can you put a copy of a work in the public 
domain while maintaining a license on another copy?  Or is it the work 
itself that is placed in the public domain, and any ability to enforce 
copyright on any copies has been surrendered? My understanding was that 
works are placed in the public domain while copies are licensed, and 
that placing a work in the public domain renounces any copyright claim 
you might have on any copies regardless of what license they may have 
been previously released under.  You seem to be saying that a particular 
copy of a work can be placed in the public domain while other copies 
remain under copyright restrictions?


With regard to bundled exports, it would help me to look at a concrete 
case.  Say we have an export from MakeHuman that consists of three files


1) A 3D mesh that was created starting with a 3D mesh that comes with 
MakeHuman and transformed by the user using MakeHuman.


2) A meta-data file containing information about the character and its 
appearance created by the user using MakeHuman


3) A texture in the form of an image file from the MakeHuman collection 
of texture images.


Let's say the user chooses to take the CC0 option.  What is the 
copyright status of the three files?  Are all three files now in the 
public domain?  Can the user, or a third party use the individual files 
without being restricted by the AGPL license that would apply if the CC0 
option hadn't been taken?  Or is it only the particular combination of 
the three that is in the public domain while the individual files are 
still under copyright?  If it is only the combination that is in the 
public domain, does it revert to AGPL if you make any modifications?


Thanks again.


On 2017-10-25 11:04 AM, John Cowan wrote:



On Wed, Oct 25, 2017 at 9:30 AM, Lindsay Patten 
<blindsaypat...@gmail.com <mailto:blindsaypat...@gmail.com>> wrote:.


My understanding of CC0 is that it is a declaration that you have
placed the work in the public domain, with a fallback license in
case the law in a particular jurisdiction doesn't permit that.  If
the user takes the CC0 option, what is the status of the
individual assets that are bundled into the export?  Are they in
the public domain or still copyrighted by the MakeHuman authors?

Those particular copies are effectively in the public domain, provided 
that the MakeHuman folks actually hold copyright.  Third party 
copyrights are of course unaffected.


What I find confusing is whether CC0 is a license that can be
applied to a particular copy of a work,

Every license is applicable only to particular copies. The self-same 
bunch of bits may have a commercial license for one copy that permits 
certain acts and forbids others, and a GPL license on another copy 
which has completely different conditions from the commercial 
license.  As long as the licensor is the owner, that's just fine. 
SImilarly, bits inside an executable that have been compiled from a 
BSD source are (at least arguably) under the GPL if other bits in the 
same executable come from GPLed source.


--
John Cowan http://vrici.lojban.org/~cowan 
<http://vrici.lojban.org/%7Ecowan> co...@ccil.org <mailto:co...@ccil.org>

The whole of Gaul is quartered into three halves.
        --Julius Caesar



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[License-discuss] MakeHuman, CC0 and AGPL

2017-10-25 Thread Lindsay Patten

Hello,

I'm hoping I can get a better understanding of the licenses associated 
with MakeHuman.


MakeHuman is a program that allows you to generate 3D human characters, 
adjusting numerous parameters such as height, weight, gender, race, 
facial and body details, clothing, etc. etc.  The program is licensed 
with the AGPL.  It creates exports consisting of 3D meshes, material 
descriptions, and texture images.  The exports are licensed AGPL as 
well, but if they are produced using an unmodified official version of 
the program the user is granted the option to apply CC0 instead.


   As a special and limited exception, the copyright holders of the
   MakeHuman assets grants the option to use CC0 1.0 Universal as
   published by the Creative Commons, either version 1.0 of the
   License, or (at your option) any later version, as a license for the
   MakeHuman characters exported under the conditions that a) The
   assets were bundled in an export that was made using the file export
   functionality inside an OFFICIAL and UNMODIFIED version of MakeHuman
   and/or b) the asset solely consists of a 2D binary image in PNG, BMP
   or JPG format.

My understanding of CC0 is that it is a declaration that you have placed 
the work in the public domain, with a fallback license in case the law 
in a particular jurisdiction doesn't permit that.  If the user takes the 
CC0 option, what is the status of the individual assets that are bundled 
into the export?  Are they in the public domain or still copyrighted by 
the MakeHuman authors?


What I find confusing is whether CC0 is a license that can be applied to 
a particular copy of a work, or if using CC0 means the work itself, not 
just a particular copy of it, is placed in the public domain.  I'm also 
unsure about licensing a bundle of assets.


The complete license is at http://www.makehuman.org/license.php and 
there is an explanation of it at 
http://www.makehuman.org/license_explanation.php


I am interested in understanding the implications of the current 
license, and also in knowing if there is a better way to license 
MakeHuman that prevents MakeHuman non-code assets from being used in 
closed source software, while still allowing unencumbered use of the 
exported character.


I should say that the vast majority of MakeHuman users do not 
redistribute the exported character data, they use it to create images 
or video, which MakeHuman makes no claim on.  The only time there are 
issues is if the generated character is used in a larger work, such as a 
game, 3D artwork, or VR experience.


Thanks,
    Lindsay


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