I know my question doesn't directly pertain to C4D, but maybe someone here will have the answer.
Creating a c4d material is simple, mat = c4d.Material(c4d.Mbase), but how to create a VRay material?
sorry, but this it NOT how to create a "c4d material".
Cinema 4D has multiple, different materials. All materials are based on BaseMaterial. Thus, any material can be created using the c4d.BaseMaterial constructor and the appropriate ID:
# create Cheen material
material = c4d.BaseMaterial(c4d.Mcheen)
The Cinema 4D standard material is a special case. It can be created using BaseMaterial . But there is also a dedicated class, that can be used as well: c4d.Material.
# create standard material
material = c4d.BaseMaterial(c4d.Mmaterial)
# create standard material the other way
material2 = c4d.Material()
To create a VRay material, you need the ID of that material to use it with c4d.BaseMaterial. I don't have VRay here, but you can easily obtain that ID from a already created material using GetType().
# get the currently selected material
mat = doc.GetActiveMaterial()
if mat is not None:
# print type ID
You find more information in the C++ docs: BaseMaterial Manual
Thank you for your response. I found the identifiers of the different VRay materials in the file c4d_symbol.h.