P511: Enumerate all maximal obstacle-free convex hulls

P511: Enumerate all maximal obstacle-free convex hulls
Input:
A set $V$ of points and a set $X$ of obstacles.
Output:
All maximal obstacle-free convex hulls.
Complexity:
$O(|V|^2|X| (|X| + \log |V|)$ delay.
Comment:
Exponential space. Proximity search.
Reference:
[Conte2019] (Bibtex)