Add glTF 1.1 models from the upcoming glTF tutorial

[pjcozzi]

@javagl for the models in https://github.com/javagl/gltfTutorialModels, do you prefer:

• That we just link to that repo from here, or
• That you open a PR to move all those models into this repo and then perhaps add an appendix to the tutorial with a list of the models and direct links to each?

[javagl]

I don't have a strong preference here. Conceptually, they are a bit different than the other models, because they are small, hand-crafted, feature-based examples, and some of them use a mixed structure (with embedded buffers but external shaders) for easier presentation in the tutorial.

If they are moved to the official sample models repo, then they could

• either appear as "Test cases/models" in a dedicated list
• or be added to the list of existing models, possibly sorted by topic (e.g. the "SimpleAnimation" before "Box Animated", the "SimpleSkin" before "Rigged Simple" etc.)

In any case, I agree to what you mentioned in the second point: It could be useful to link from the tutorial to the models. Either via a list in an appendix, or inlined: "Here is an example ... it can be downloaded from the sample models repo at (link)". Similarly, one could add a link to the README of the models: "SimpleSkin. Skinning is explained in the tutorial at (link)"

If they should be added here, then just drop me a note, and I will create a PR to start filling the 1.1 directory :-)

[pjcozzi]

either appear as "Test cases/models" in a dedicated list

Good idea, let's do this. Looking forward to the pull request!

[javagl]

Done ("accidentally") as discussed in #18 (comment)