+typedef enum { NONE, RIGHT, LEFT, MIDDLE } ConnectorSide;
+typedef enum { UNDEF, IN, OUT } ConnectorType;
+
+class Connector {
+ public:
+ int id_dest;
+ ConnectorType type;
+ Connector& operator= (Connector & c) {
+ id_dest = c.id_dest;
+ type = c.type;
+ return *this;
+ }
+};
+