Added exception for W nodes

zxlive/editor_base_panel.py

@@ -189,6 +189,10 @@ def add_edge(self, u: VT, v: VT, verts: list[VItem]) -> None:
         if graph.type(u) == VertexType.W_INPUT and len(graph.neighbors(u)) >= 2 or \
             graph.type(v) == VertexType.W_INPUT and len(graph.neighbors(v)) >= 2:
             return None
+        # We will try to connect all the vertices together in order
+        # First we filter out the vertices that are not compatible with the edge.
+        verts = [vitem for vitem in verts if not graph.type(vitem.v) == VertexType.W_INPUT] # we will be adding two edges, which is not compatible with W_INPUT
+        # but first we check if there any vertices that we do want to additionally connect.
         if not self.snap_vertex_edge or not verts:
             cmd = AddEdge(self.graph_view, u, v, self._curr_ety)
             self.undo_stack.push(cmd)

zxlive/graphscene.py

@@ -309,8 +309,11 @@ def add_edge(self, e: QGraphicsSceneMouseEvent) -> None:
         for it in self.items(e.scenePos(), deviceTransform=QTransform()):
             if isinstance(it, VItem):
                 v2 = it
+                break
                 #self.edge_added.emit(self._drag.start.v, it.v)
-        assert v2 is not None
+        else:
+            e.ignore()
+            return
         path = QPainterPath(v1.pos())
         path.lineTo(e.scenePos())
         colliding_verts = []