Create gltf serializer

[berlotti]

Now that geometry is stored in the database, please create a gltf export serializer.

[dlabz]

Integrate json-schema in a way similar to how IFC is implemented, or just makes serializer that exports model in a glTF format?

[berlotti]

Yes, creating a JSON schema similar to IFC. We want a viewer with semantics. Also preferably integrate the binaries into the JSON using data URIs https://developer.mozilla.org/en-US/docs/data_URIs The overall goal is to create a WebGL viewer (BIM Surfer) based on ThreeJS with streaming connection to BIMserver data.

[dlabz]

Right. Exactly what I'm working on for my work project. I've discussed with my employer, and have his approval to opensource this part of the code. My idea was to use http://www.jsonschema2pojo.org/ to generate the JAVA classes. I don't have much experience with generated classes, but hopefully @rubendel will be able to provide some guidance.

[berlotti]

Serializers from BIMserver are open source by definition: http://bimserver.org/license/ Please respect the open source license for derived products. If you make it public and for free or not is your decision.

[bountysource-support]

[lirmont]

To the best of my knowledge, this is solved over in: https://github.com/lirmont/BIMserver/tree/master/Collada

The pull request just needs to be accepted so that it's integrated into the master branch.

[berlotti]

Hi Lirmont,

We noticed "The glTF is dependent upon the program collada2gltf being available on the path of the server operating system of the BIMServer."

The plugin needs to include this to run smootly. It is also not clear under what license collada2gltf is published.

[lirmont]

I will include and rewrite the code to look for pre-packaged binaries. That may make it more difficult to just upgrade that component, since the plugin would need to be re-released with every new version of those binaries.

Licenses

The "example glTF code" (collada2gltf) is BSD License (http://en.wikipedia.org/wiki/BSD_licenses), and its third-party library licenses are listed here: https://github.com/KhronosGroup/glTF/blob/master/LICENSE.md

The Open3DGC codec is MIT license: https://github.com/amd/rest3d/tree/master/server/o3dgc -> https://github.com/amd/rest3d/blob/master/LICENSE.md

[lirmont]

The latest pull request includes pre-packaged binaries for the collada2gltf exporter (Windows & MacOSX), and it places a copy of the license for the collada2gltf program next to the binaries. The readme for the Collada plugin has also been updated with information accurate to this pull request.