The link does not appear to be valid. Could you please send the correct link?
It would be nice to use a standard json PBR material description format (or something as close as possible to a standard), for example glTF:
{
"pbrMetallicRoughness": {
"baseColorFactor": [
0.4117647058823529,
0.6823529411764706,
0.4117647058823529,
1.0
],
"metallicFactor": 0.0,
"roughnessFactor": 1.0
}
}
That format could be then used in other places in VTK and in other VTK-based applications.