// Detects input from the developer within the scene view
    void SceneInput()
    {
        Event currentEvent = Event.current;

        // Create a new road section
        if (currentEvent.type == EventType.MouseDown && currentEvent.button == 0 && currentEvent.shift)
        {
            Undo.RecordObject(selectedRoad, "Create Road Section");
            selectedRoad.CreateRoadSection(HandleUtility.GUIPointToWorldRay(currentEvent.mousePosition), selectedNode, selectedRoad.RoadWidth * .5f);
            GenerateMesh();
        }

        // Create a new road section
        if (currentEvent.type == EventType.MouseDown && currentEvent.button == 0 && currentEvent.control)
        {
            selectedRoad = network.CreateNewRoad(defaultMaterial);
            Undo.RecordObject(network, "Create new road");
            GenerateMesh();
        }

        // Delete an anchor, removing a road section
        if (currentEvent.type == EventType.MouseDown && currentEvent.button == 1)
        {
            Undo.RecordObject(network, "Remove Road Section");
            selectedRoad.RemoveRoadSection(HandleUtility.GUIPointToWorldRay(currentEvent.mousePosition), anchorNodeSize * .5f, controlNodeSize * .5f);
            GenerateMesh();
        }

        // Select/deselect an anchor node
        if (currentEvent.type == EventType.MouseDown && currentEvent.button == 0)
        {
            // Attempt to select a node and assign it to newSelectedNode
            int newSelectedNode = selectedRoad.SelectNode(HandleUtility.GUIPointToWorldRay(currentEvent.mousePosition), anchorNodeSize * .5f, controlNodeSize * .5f);

            // If there was a node selected and now there isn't, deselect the node
            if (selectedNode != -1 && newSelectedNode == -1)
            {
                Undo.RecordObject(selectedRoad, "Deselect Anchor Node");
                selectedNode = -1;
            }
            // If a node has been selected other than itself, select the node
            if (selectedNode != newSelectedNode && newSelectedNode != -1)
            {
                GUIUtility.hotControl = GUIUtility.GetControlID(FocusType.Passive); // Stops the road network object losing focus when the mouse is left-clicked

                Undo.RecordObject(selectedRoad, "Select Anchor Node");
                selectedNode = newSelectedNode;

                currentEvent.Use();
            }
        }

        // Delete the selected road when pressing DEL
        if (currentEvent.type == EventType.KeyDown && currentEvent.keyCode == KeyCode.Delete)
        {
            DeleteRoad();
            currentEvent.Use();
        }
    }