To get a nice path along the surface, pass the vertex indices along a geodesic path. Note: You can first open an interactive brain view (`view='si'`) with a vis* function like vis.subject.morph.native, then run this function to draw into the active plot.
vis.path.along.verts(surface_vertices, path_vertex_indices)float matrix of size (n, 3), the surface vertex coordinates, as returned as part of subject.surface or read.fs.surface, in the member "vertices".
vector of vertex indices, the path. You will need to have it computed already. (This function does **not** compute geodesic paths. You can use it to visualize such a path though.)
Other surface mesh functions:
face.edges(),
label.border(),
mesh.vertex.included.faces(),
mesh.vertex.neighbors(),
subject.surface()