[Geo4All] [geoforall-ab] Ideas invited from "Geo for All" community for Global Week to help demonstrate and raise awareness of "geo" in education at UNESCO

massimiliano cannata massimiliano.cannata at gmail.com
Mon Aug 15 15:26:55 PDT 2016


Dear patrik
Thanks for the clear and precise clarification wich tell how open is cesium
(and even if it would have a deluxe version still you have an osi licensed
software for the community to work on and make it better then this deluxe
version).

For curiosity... may i ask you if you have ever considered to incubate in
osgeo? And if not, why?

Best
Maxi
Il 15/Ago/2016 18:57, "Cozzi, Patrick" <pcozzi at agi.com> ha scritto:

> Hi all,
>
>
>
> As an educator and open-source geospatial developer, I admire the
> principles of Geo4All.
>
>
>
> 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.
>
>
>
> 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.
>
>
>
> 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].
>
>
>
> 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.
>
>
>
> 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.
>
>
>
> 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.
>
>
>
> 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].
>
>
>
> 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].
>
>
>
> Thanks,
>
> Patrick
>
> http://www.seas.upenn.edu/~pcozzi/
>
>
>
>
>
> [1] http://www.seas.upenn.edu/~pcozzi/projects.html
>
> [2] https://opensource.org/osd-annotated
>
> [3] https://opensource.org/licenses
>
> [4] https://github.com/AnalyticalGraphicsInc/cesium/
> blob/master/CONTRIBUTING.md#code-of-conduct
>
> [5] https://github.com/AnalyticalGraphicsInc/cesium/
> blob/master/CONTRIBUTORS.md
>
> [6] https://groups.google.com/forum/#!topic/cesium-dev/jGgNInY2Fqo
>
> [7] https://github.com/AnalyticalGraphicsInc/cesium/
> blob/master/CONTRIBUTING.md#contributor-license-agreement-cla
>
> [8] http://cesiumjs.org/tutorials.html
>
> [9] https://github.com/AnalyticalGraphicsInc/cesium/
> blob/master/Documentation/Contributors/README.md
>
> [10] http://cesiumjs.org/publications.html#growing-an-
> open-source-community-lessons
>
> [11] http://cesiumjs.org/for-google-earth-developers.html
>
> [12] http://cesiumjs.org/demos.html
>
> [13] https://www.khronos.org/gltf
>
> [14] https://github.com/AnalyticalGraphicsInc/3d-tiles
>
> [15] http://dodcio.defense.gov/Open-Source-Software-FAQ/#Q:_
> Is_open_source_software_commercial_software.3F_Is_it_COTS.3F
>
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>
>
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