Create a node-edge graph from the two-dimensional convex hull of a collection of points.

Input parameters:

1. Pt → Points for graph.
2. Cn → If true, points on the interior of the hull are connected as well.
3. Hn → Optional meta data to assign to naked edges.
4. He → Optional meta data to assign to unwelded edges.
5. In → Optional meta data to assign to interior smooth edges.
6. Ie → Optional meta data to assign to interior smooth edges.

Output parameters:

1. Gf → Node-edge graph from convex hull.