Method IsValid

src/colmap/math/spanning_tree.h:45–45

Check if tree is valid (has a root and non-empty parents).

  // Check if tree is valid (has a root and non-empty parents).
  bool IsValid() const { return root >= 0 && !parents.empty(); }

  // Get the number of nodes in the tree.
  size_t NumNodes() const { return parents.size(); }