Re: [Visualpython-users] License

[Baozhi C. <bc...@gm...>]

I have installed these font and polygon packages. The text examples
with vpython 5.32 work but the text object cannot appear
in my program. I wonder if it is due to the graphics driver or not.

On Thu, Jun 17, 2010 at 8:37 PM, Bruce Sherwood <bas...@nc...> wrote:
> I guess the confusion is that in the case of the Windows and Mac installers,
> the modules are included in the VPython installers. On the Linux download
> page at vpython.org you will see "In support of the 3D text object, you will
> need to install the font-handling modules FontTools, ttfquery (version 1.0.4
> or later), and Polygon (all available from pypi.python.org), for which the
> following conditions apply:" followed by an extract from the Visual
> license.
> Also, in INSTALL.txt included in the Visual tarball you will see "For Visual
> 5.3 and later, you need the Python modules FontTools, ttfquery, and
> Polygon. Be sure to get ttfquery 1.0.4 or later." This is followed by the
> specific information about Polygon.
> If you don't install these components on Linux the new text object won't
> work.
> Hope this helps.
> Bruce Sherwood
> On Thu, Jun 17, 2010 at 4:50 PM, Thomas Spura <to...@fe...>
> wrote:
>>
>> Am Thu, 17 Jun 2010 11:18:48 -0600
>> schrieb Bruce Sherwood <bas...@nc...>:
>>
>> > I'm not sure to what you're referring.
>>
>> To this part of the license:
>>
>> [snip]
>>
>> > ---------------------------------------------------------------------
>> > The following copyright notice applies to the Polygon module
>> > distributed with Visual for the convenience of our users under the
>> > following terms:
>> >
>> > "This distribution contains code from the GPC Library, and/or code
>> > resulting from the use of the GPC Library. This usage has been
>> > authorized by The University of Manchester, on the understanding
>> > that the GPC-related features are used only in the context of this
>> > distribution. It is not permitted to extract the GPC code from the
>> > distribution as the basis for commercial exploitation, unless a
>> > GPC Commercial Use Licence is obtained from The University of
>> > Manchester, contact: http://www.cs.man.ac.uk/~toby/gpc/".
>> >
>> > ---------------------------------------------------------------------
>>
>> This sounds highly 'non free' and therefor needs to go through the
>> legal team from redhat at least.
>>
>> But after looking thought the sources, I didn't found, where the
>> polygon module exactly is... Should be somewhere under
>> site-packages/visual/*, but the only thing I found was
>> in ./site-packages/visual/primitives.py:
>> 'import Polygon'.
>>
>> So where is it?
>>
>> Grepping for "GPC" also brings no results, so at least there will be a
>> comment missing about the license, if this polygon modules is still
>> included...
>>
>>        Thomas
>>
>>
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