Autodesk Forge Viewer: Connect Fragment Material to Revit Model Data - autodesk-forge

Question

EDIT: TLDR there is currently no way to know material names on the fragment level.
I want to read the materials from fragments of a node and change their materials according to a map that uses the Revit material names as keys.
I have the following "Materials and Finishes" properties from a node in the model (retrieved via Viewer3D):
And I have the following THREE materials from the fragments of that node:
Is there a way to set the names of the THREE materials to match the model data (or use them at all)?
Ideally I would be able to match these THREE materials with the following materials extracted from this node:

Answer 1

The SVF file format (generated by the Model Derivative service and loaded by Forge Viewer) does not preserve material names unfortunately. The fragments are simply associated with a specific material based on its index in the list.
The "Materials and Finishes" data is basically just a property specific to the original file (in this case a Revit model), and it may not be available in other file formats.
EDIT: I tried looking into the Materials.json.gz file, and unfortunately the names are not included there, either:
{
"name": "LMVTK Simple Materials",
"version": "1.0",
"scene": {
"SceneUnit": 8215,
"YIsUp": 0
},
"materials": {
"0": {
"version": 2,
"userassets": ["0"],
"materials": {
"0": {
"tag": "",
"proteinType": "",
"definition": "SimplePhong",
"properties": {
"integers": {
"mode": 4
},
"booleans": {
"color_by_object": false,
"generic_is_metal": false,
"generic_backface_cull": true
},
"scalars": {
"generic_transparency": {
"units": "",
"values": [0]
}
},
"colors": {
"generic_diffuse": {
"values": [{
"r": 0,
"g": 1,
"b": 0,
"a": 1
}]
}
}
},
"transparent": false,
"textures": {
}
}
}
},
"1": {
"version": 2,
"userassets": ["0"],
"materials": {
"0": {
"tag": "",
"proteinType": "",
"definition": "SimplePhong",
"properties": {
"integers": {
"mode": 4
},
"booleans": {
"color_by_object": false,
"generic_is_metal": false,
"generic_backface_cull": true
},
"scalars": {
"generic_transparency": {
"units": "",
"values": [0]
}
},
"colors": {
"generic_diffuse": {
"values": [{
"r": 0.400000,
"g": 0.400000,
"b": 0.400000,
"a": 1
}]
}
}
},
"transparent": false,
"textures": {
}
}
}
}
...
}