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<p>Thanks Patrick for your clear explanation. As Maxi asked, why
don't you consider to get incubated into OSGeo? I hope to have
some virtual globes in the OSGeo family and having Cesium (and
obviously NASA WW, which I've better known) among the flag
software of OSGeo would be fantastic! <br>
</p>
<p>Best regards,</p>
<p>Maria</p>
<p><br>
</p>
<br>
<div class="moz-cite-prefix">Il 15/08/2016 16:24, Cozzi, Patrick ha
scritto:<br>
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<p class="MsoNormal">Hi all,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">As an educator and open-source geospatial
developer, I admire the principles of Geo4All.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">At the University of Pennsylvania, all of
my course projects are open-source; I mentor projects and
speak in Penn's open-source software development course; and I
advise independent study projects that produce useful
open-source software [1]. I also serve on conference
committees such as FOSS4G NA and FedGeoDay.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">At AGI, I started Cesium and open-source
development in general, and continue to lead these efforts.
There's some misinformation about Cesium in this thread that I
would like to clear up.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">1. Cesium is truly open-source as defined
by the Open Source Initiative [2]. Cesium uses the Apache 2.0
license (an OSI approved license [3]), follows the Contributor
Covenant's Code of Conduct [4], has dozens of contributors not
employed by AGI [5], has public roadmap discussions where
everyone is encouraged to participate [6], strictly follows
Contributor License Agreements [7], has tons of documentation
to create an inclusive community for new users and
contributors [8, 9], and is considered by many to be an
open-source community success story [10].<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">2. In addition to creating a genuinely
useful software project that has, for example, proved to be a
successful successor to Google Earth [11] and widely used at
NASA (search for "NASA" in [12]), the Cesium team is now
creating an ecosystem including open formats to move the 3D
geospatial field forward without vendor lock-in. These
formats include glTF for efficient 3D models [13], an open
standard that we created as part of The Khronos Group (who
also maintain WebGL, OpenGL, COLLADA, etc), and 3D Tiles for
streaming massive heterogeneous 3D geospatial datasets [14].
We've fostered these formats in openness by having spec
development, editing, and discussion in GitHub repos.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">3. The existence of a Cesium Pro version
does not imply that open-source Cesium is a distant second.
Cesium Pro could more literally be named "Cesium with niche
aerospace features." It serves a narrow market that creates
funding for the sustainability and rapid development of the
broad open-source Cesium. AGI is passionately supporting
open-source Cesium for the long-haul as all our new
initiatives are built on it. We would, for example, never
make the core terrain and imagery engine faster in Cesium Pro,
but not open-source Cesium. The tangled fork alone would be
too much work to maintain. Open-source Cesium will remain
first rate and use only open formats so, for example, data
sources can come from any vendor, with open- or closed-source
software.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Please let me know if you have specific
questions about Cesium. I'm happy to provide info and respect
that ultimately the decision to use Cesium for Geo4All,
MapStory, etc. is up to you.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Also, one thought for criteria for
Geo4All's endorsement: consider a minimal first requirement of
only using projects with OSI approved licenses as this comes
with many guarantees about the open use of the project [3].<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Finally, I suggest avoiding terms like
"license free" since if a project does not have a license, it
is technically "all rights reserved." I would also try to
avoid "commercial" in some contexts since, at least in the US
government's eyes, open-source software is commercial software
[15].<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thanks,<o:p></o:p></p>
<p class="MsoNormal">Patrick<o:p></o:p></p>
<p class="MsoNormal"><a class="moz-txt-link-freetext" href="http://www.seas.upenn.edu/~pcozzi/">http://www.seas.upenn.edu/~pcozzi/</a><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">[1]
<a class="moz-txt-link-freetext" href="http://www.seas.upenn.edu/~pcozzi/projects.html">http://www.seas.upenn.edu/~pcozzi/projects.html</a><o:p></o:p></p>
<p class="MsoNormal">[2] <a class="moz-txt-link-freetext" href="https://opensource.org/osd-annotated">https://opensource.org/osd-annotated</a><o:p></o:p></p>
<p class="MsoNormal">[3] <a class="moz-txt-link-freetext" href="https://opensource.org/licenses">https://opensource.org/licenses</a><o:p></o:p></p>
<p class="MsoNormal">[4]
<a class="moz-txt-link-freetext" href="https://github.com/AnalyticalGraphicsInc/cesium/blob/master/CONTRIBUTING.md#code-of-conduct">https://github.com/AnalyticalGraphicsInc/cesium/blob/master/CONTRIBUTING.md#code-of-conduct</a><o:p></o:p></p>
<p class="MsoNormal">[5]
<a class="moz-txt-link-freetext" href="https://github.com/AnalyticalGraphicsInc/cesium/blob/master/CONTRIBUTORS.md">https://github.com/AnalyticalGraphicsInc/cesium/blob/master/CONTRIBUTORS.md</a><o:p></o:p></p>
<p class="MsoNormal">[6]
<a class="moz-txt-link-freetext" href="https://groups.google.com/forum/#!topic/cesium-dev/jGgNInY2Fqo">https://groups.google.com/forum/#!topic/cesium-dev/jGgNInY2Fqo</a><o:p></o:p></p>
<p class="MsoNormal">[7]
<a class="moz-txt-link-freetext" href="https://github.com/AnalyticalGraphicsInc/cesium/blob/master/CONTRIBUTING.md#contributor-license-agreement-cla">https://github.com/AnalyticalGraphicsInc/cesium/blob/master/CONTRIBUTING.md#contributor-license-agreement-cla</a><o:p></o:p></p>
<p class="MsoNormal">[8] <a class="moz-txt-link-freetext" href="http://cesiumjs.org/tutorials.html">http://cesiumjs.org/tutorials.html</a><o:p></o:p></p>
<p class="MsoNormal">[9]
<a class="moz-txt-link-freetext" href="https://github.com/AnalyticalGraphicsInc/cesium/blob/master/Documentation/Contributors/README.md">https://github.com/AnalyticalGraphicsInc/cesium/blob/master/Documentation/Contributors/README.md</a><o:p></o:p></p>
<p class="MsoNormal">[10]
<a class="moz-txt-link-freetext" href="http://cesiumjs.org/publications.html#growing-an-open-source-community-lessons">http://cesiumjs.org/publications.html#growing-an-open-source-community-lessons</a><o:p></o:p></p>
<p class="MsoNormal">[11]
<a class="moz-txt-link-freetext" href="http://cesiumjs.org/for-google-earth-developers.html">http://cesiumjs.org/for-google-earth-developers.html</a><o:p></o:p></p>
<p class="MsoNormal">[12] <a class="moz-txt-link-freetext" href="http://cesiumjs.org/demos.html">http://cesiumjs.org/demos.html</a><o:p></o:p></p>
<p class="MsoNormal">[13] <a class="moz-txt-link-freetext" href="https://www.khronos.org/gltf">https://www.khronos.org/gltf</a><o:p></o:p></p>
<p class="MsoNormal">[14]
<a class="moz-txt-link-freetext" href="https://github.com/AnalyticalGraphicsInc/3d-tiles">https://github.com/AnalyticalGraphicsInc/3d-tiles</a><o:p></o:p></p>
<p class="MsoNormal">[15]
<a class="moz-txt-link-freetext" href="http://dodcio.defense.gov/Open-Source-Software-FAQ/#Q:_Is_open_source_software_commercial_software.3F_Is_it_COTS.3F">http://dodcio.defense.gov/Open-Source-Software-FAQ/#Q:_Is_open_source_software_commercial_software.3F_Is_it_COTS.3F</a><o:p></o:p></p>
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<pre class="moz-signature" cols="72">--
<a class="moz-txt-link-freetext" href="http://www.geoinformatics.polimi.it/">http://www.geoinformatics.polimi.it/</a>
--
Prof. Maria Antonia Brovelli
Vice Rector for Como Campus and GIS Professor
Politecnico di Milano
ISPRS WG IV/5 "Web and Cloud Based Geospatial Services and Applications"; OSGeo; ICA-OSGeo-ISPRS AB; NASA WorldWind Europa Challenge; SIFET
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