feat(poly): find all connected elements to central vertex

In order to constrain the central slope we find all the elements connected to the central vertex. The slope will be approximated over these using the finite difference method

src/poly/utils/public/polyMFEMUtils.h

@@ -2,7 +2,7 @@
 //
 //   Copyright (C) 2025 -- The 4D-STAR Collaboration
 //   File Author: Emily Boudreaux
-//   Last Modified: February 14, 2025
+//   Last Modified: March 19, 2025
 //
 //   4DSSE is free software; you can use it and/or modify
 //   it under the terms and restrictions the GNU General Library Public
@@ -23,11 +23,9 @@
 
 #include "mfem.hpp"
 #include <string>
-#include <array>
 #include <vector>
 #include "config.h"
 #include "probe.h"
-#include "quill/LogMacros.h"
 
 
 
@@ -175,8 +173,10 @@ namespace polyMFEMUtils {
     mfem::Array<int> m_originElementIDs;
     mfem::Array<mfem::IntegrationPoint> m_originIntegrationPoints;
     mfem::DenseMatrix m_originCoordinateMatrix;
+    mfem::Mesh* m_mesh;
+    std::vector<int> m_originConnectedElementIds;
   public:
-    ConstraintIntegrator(const double gamma);
+    ConstraintIntegrator(const double gamma, mfem::Mesh* mesh);
     ~ConstraintIntegrator() = default;
 
     void AssembleElementMatrix(const mfem::FiniteElement &el, mfem::ElementTransformation &Trans, mfem::DenseMatrix &elmat) override;