Did you ever get this sorted? I am in a similar position. At run time I need to get the vertices, triangles, normals & UVs of a mesh; apply some processing; then rebuild a static mesh from them. Getting the data and rebuilding looks extremely undocumented, is it even possible?
I’m currently thinking that I need to use a USkeletalMesh instead.
I am in a similar position. Although I am using a skeletal mesh, it stores the model in a similar way. I’ve gotten verticies, and found ‘RawIndicies’ but have yet to find proper triangle information. That is based around the class
For example in the first person template:
TArray TrianglePoints; Mesh1P->SkeletalMesh->GetImportedResource()->LODModels.GetVertices(TrianglePoints);
TrianglePoints[Index].Position for the verticies
Although a confusing read, i got the information from here: