Initial sketch for plugins.

src/mesh/MeshPrimitives.cpp

@@ -45,6 +45,7 @@ std::unique_ptr<TriMesh> MeshPrimitives::buildCircleAsTriMesh(unsigned numSegmen
         const double y = cos(theta);
         locations[idx] = {x, y};
         theta += delta_theta;
+        std::cout << "Adding node at: " << x << " | " << y << std::endl;
     }
 
     EdgeIds edge_ids(2*numSegments);