void OnSceneGUI()
{
// get the chosen game object
NodeSystem t = target as NodeSystem;
if (sv == null || sceneViewCam == null)
{
sv = EditorWindow.GetWindow <SceneView>();
sceneViewCam = sv.camera;
}
if (t == null || t.rootNode == null)
{
return;
}
Event current = Event.current;
int controlID = GUIUtility.GetControlID(t.GetHashCode(), FocusType.Passive);
Node nodeToSelect = NodeToSelect(t);
if (Event.current.type == EventType.MouseDown && Event.current.button == 0)
{
if (nodeToSelect != null)
{
t.selectedNode = nodeToSelect;
Event.current.Use();
}
}
if (current.type == EventType.Layout)
{
if (nodeToSelect != null)
{
HandleUtility.AddDefaultControl(controlID);
}
}
DrawLinesRecursively(t, t.rootNode);
EditorGUI.BeginChangeCheck();
Vector3 newPosition = t.transform.TransformPoint(t.selectedNode.pos);
if (t.selectedNode != null)
{
newPosition = Handles.PositionHandle(t.transform.TransformPoint(t.selectedNode.pos), t.transform.rotation);
}
if (EditorGUI.EndChangeCheck())
{
Undo.RecordObject(t, "Change node position");
t.selectedNode.pos = t.transform.InverseTransformPoint(newPosition);
}
}
