Paraviewweb and Draco

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1

Hi everyone,

In paraviewweb I need to output mesh and associated field data in the draco format. Known Python wrappers (actually, I’ve found only one so far, GitHub - seung-lab/DracoPy: Python wrapper for Google's Draco mesh compression library.) do not support encoding of additional geometry attributes.

Basically, the idea is to create a C++ paraview plugin for filter which will use native C++ Draco API to output Draco encoded buffers. Then this plugin will be used by paraviewweb to forward compressed data further over the network.

So the question - is this possible and could theoretically work?

Thanks!

2

It should be possible. But you will need to handle the
vtkPloyData => Draco ...network... Draco => vtkPolyData

The only unknown from my side is the draco API. But if you handle vtkDataArray => TypedArray, you should be good with little remapping.

1 Like
3

Sebastien, thank you for the help.

Could you please give another tip on how to declare a plugin method which is then can be called from pvpython?

4

If your ParaView plugin have some vtk modules, those will be available in your python.
You can see it used here:

In that case it just expose some pre-existing code in VTK but you can see plugins with vtkModules in them as ref.