feat： draw nodes

Author: SolarianZ

Editor/Scripts/GraphView/PlayableNode.cs

@@ -16,6 +16,8 @@ public PlayableNode(PlayableGraphView owner, int depth, Playable playable)
             CreatePorts();
             RefreshExpandedState();
             RefreshPorts();
+
+            CreateAndConnectInputNodes();
         }
 
 
@@ -42,5 +44,31 @@ private void CreatePorts()
                 InternalOutputPorts.Add(outputPort);
             }
         }
+
+        private void CreateAndConnectInputNodes()
+        {
+            if (!Playable.IsValid())
+            {
+                return;
+            }
+
+            var inputPlayableDepth = Depth + 1;
+            for (int i = 0; i < Playable.GetInputCount(); i++)
+            {
+                var inputPlayable = Playable.GetInput(i);
+                var inputPlayableTypeName = inputPlayable.GetPlayableType().Name;
+                var inputPlayableNode = new PlayableNode(Owner, inputPlayableDepth, inputPlayable)
+                {
+                    title = inputPlayableTypeName
+                };
+                inputPlayableNode.SetPosition(new Rect(-400 * inputPlayableDepth, 200, 0, 0));
+                Owner.AddElement(inputPlayableNode);
+
+                var inputPlayableOutputPortIndex = 0;
+                var inputPlayableOutputPort = InternalInputPorts[inputPlayableOutputPortIndex];
+                var edge = inputPlayableOutputPort.ConnectTo(inputPlayableNode.OutputPorts[0]);
+                Owner.AddElement(edge);
+            }
+        }
     }
 }

Editor/Scripts/GraphView/PlayableOutputNode.cs

@@ -19,7 +19,7 @@ public PlayableOutputNode(PlayableGraphView owner, int depth, PlayableOutput pla
             RefreshExpandedState();
             RefreshPorts();
 
-            CreateAndConnectInputs();
+            CreateAndConnectInputNodes();
         }
 
 
@@ -36,7 +36,7 @@ private void CreatePorts()
             InternalInputPorts.Add(inputPort);
         }
 
-        private void CreateAndConnectInputs()
+        private void CreateAndConnectInputNodes()
         {
             if (!PlayableOutput.IsOutputValid())
             {
@@ -53,7 +53,9 @@ private void CreateAndConnectInputs()
             inputPlayableNode.SetPosition(new Rect(-400 * inputPlayableDepth, 200, 0, 0));
             Owner.AddElement(inputPlayableNode);
 
-            var edge = InternalInputPorts[0].ConnectTo(inputPlayableNode.OutputPorts[0]);
+            var inputPlayableOutputPortIndex = PlayableOutput.GetSourceOutputPort();
+            var inputPlayableOutputPort = InternalInputPorts[inputPlayableOutputPortIndex];
+            var edge = inputPlayableOutputPort.ConnectTo(inputPlayableNode.OutputPorts[0]);
             Owner.AddElement(edge);
         }
     }