VertexVertexIter vv_iter(VertexHandle _vh)
vertex - vertex circulator
FaceHalfedgeIter fh_iter(FaceHandle _fh)
face - halfedge circulator
VertexFaceIter vf_iter(VertexHandle _vh)
vertex - face circulator
VertexIHalfedgeIter vih_iter(VertexHandle _vh)
vertex - incoming halfedge circulator
VertexOHalfedgeIter voh_iter(VertexHandle _vh)
vertex - outgoing halfedge circulator
VertexEdgeIter ve_iter(VertexHandle _vh)
vertex - edge circulator
FaceEdgeIter fe_iter(FaceHandle _fh)
face - edge circulator
FaceVertexIter fv_iter(FaceHandle _fh)
face - vertex circulator
FaceFaceIter ff_iter(FaceHandle _fh)
face - face circulator