Vtk-js: glTF support

[doczoidberg]

Not sure if it makes sense for vtk.js but please consider the use of glTF:

https://en.wikipedia.org/wiki/GlTF
https://www.khronos.org/gltf
https://github.com/KhronosGroup/glTF

it should help to load and process 3d data faster

[jourdain]

https://github.com/google/draco could have better benefits. But the data model we would be looking at, would only be vtkPolyData / vtkImageData and maybe vtkUnstructuredGrid.

[haehn]

Hi @jourdain do you have plans yet to support glTF / Draco in VTK.js? There is a lot of momentum and it could be very useful.

[jourdain]

I think glTF will happen sooner than Draco but I hope both should happen within the next year.

[daker]

@jourdain i am giving the gltf loader a shot, i am facing an issue where loading a colored cube gives me this result, any idea?

https://filebin.net/m9z7aii9nkytvgf5/screen-capture.webm?t=d6qksflt

[finetjul]

Sorry, I won't help here concerning GLTF (besides mentionning that faces/cells do not seem to be made of the right point ids, could it be an issue when packing the arrays?), I'm just mentionning that draco is now supported in vtk.js