* removed unused Node::parent

bhtree_mpi/src/datastructures/BarnesHutTree.cpp

@@ -16,7 +16,7 @@ namespace nbody {
 		return 8;
 	}
 
-	//update upper tree ndoes according to moved particles
+	//update upper tree nodes according to moved particles
 	void BarnesHutTree::update() {
 		//iterate for updating representatives
 		Node* current = nodes->prev;
@@ -64,7 +64,6 @@ namespace nbody {
 		for (auto it = std::begin(subboxes); it != std::end(subboxes); it++) {
 			Node* child = new Node(current->tree);
 
-			child->parent = current;
 			child->bb = *it;
 			child->bodies = it->copyBodies(current->bodies);
 			child->nextSibling = nullptr;

bhtree_mpi/src/datastructures/Node.cpp

@@ -157,7 +157,7 @@ namespace nbody {
 		for (std::size_t i = 0; i < 3; i++) {
 			distance += (representative.position[i] - body.position[i]) * (representative.position[i] - body.position[i]);
 		}
-		return sqrt(distance) > getL();
+		return sqrt(distance) > getL(); // TODO(steinret): do squared comparison
 	}
 
 	//check if node is sufficient for force evaluation for all bodies in box