Add Element::setNeighbor().

This is used when the face_id of the neigbor is known.

MeshLib/Elements/Element.cpp

@@ -33,6 +33,14 @@ Element::~Element()
 	delete [] this->_neighbors;
 }
 
+void Element::setNeighbor(Element* neighbor, unsigned const face_id)
+{
+	if (neighbor == this)
+		return;
+
+	this->_neighbors[face_id] = neighbor;
+}
+
 unsigned Element::addNeighbor(Element* e)
 {
 	if (e == this ||

MeshLib/Elements/Element.h

@@ -37,6 +37,8 @@ public:
 	/// Compute the minimum and maximum squared edge length for this element
 	virtual void computeSqrEdgeLengthRange(double &min, double &max) const;
 
+	void setNeighbor(Element* neighbor, unsigned const face_id);
+
 	/**
 	 * \brief Tries to add an element e as neighbour to this element.
 	 * If the elements really are neighbours, the element is added to the