Accessing base and evaluated meshes in MODO.

baseEvalMesh.cpp

unsigned                index;
CLxUser_Scene           scene;
CLxUser_ChannelRead     rchan;
CLxUser_Mesh            umesh;

// Base mesh is CLxUser_Mesh
if (LXx_OK(item.ChannelLookup (LXsICHAN_MESH_MESH, &index))) {
    item.GetContext (scene);
    scene.GetChannels (rchan, LXs_ACTIONLAYER_EDIT);
    if (rchan.Object (itm, index, umesh))
        // umesh is the mesh interface.
    }

// Evaluated mesh comes as mesh filter and mesh interface has to be obtained from the filter.
int index = item.ChannelIndex (LXsICHAN_MESH_MESH);
if (index != -1)
{
    CLxUser_Mesh                  mesh;
    CLxUser_MeshFilter            mfilt;

    if (rchan.Object (item, index, mfilt) && mfilt.test () && mfilt.GetMesh (mesh) && mesh.test ())
    {
        // mesh is your mesh item.
    }
}