From path nodes and Variable nodes

Editor/Scripts/Editor/ImageProcessingGraphAsset.cs

@@ -5,6 +5,7 @@ using UnityEditor.Callbacks;
 using System.Collections.Generic;
 using System.Diagnostics;
 using System.Linq;
+using ImageProcessingGraph.Editor.Nodes.Types.Image.Variable_Node;
 using UnityEditor.Experimental.GraphView;
 using Debug = UnityEngine.Debug;
 
@@ -47,6 +48,8 @@ namespace ImageProcessingGraph.Editor
         
         public void RunGraph()
         {
+
+            var bleh = GetAllVariableNodesWithTypes();
             OnRun?.Invoke();
             
             // Create and start the stopwatch to measure time
@@ -72,7 +75,6 @@ namespace ImageProcessingGraph.Editor
                     failed = true;
             }
 
-            // Stop the stopwatch after running the nodes
             stopwatch.Stop();
 
             // Log the elapsed time
@@ -81,6 +83,30 @@ namespace ImageProcessingGraph.Editor
             AssetDatabase.Refresh();
         }
 
+        public List<(BaseImageNode node, System.Type type)>  GetAllVariableNodesWithTypes()
+        {
+            var result = new List<(BaseImageNode node, System.Type type)>();
+
+            foreach (var node in nodes)
+            {
+                var nodeType = node.GetType();
+                var baseType = nodeType.BaseType;
+
+                if (baseType != null && baseType.IsGenericType)
+                {
+                    if (baseType.GetGenericTypeDefinition() == typeof(VariableNode<>))
+                    {
+                        var genericArgument = baseType.GetGenericArguments()[0];
+                        result.Add((node, genericArgument));
+                    }
+                }
+            }
+
+            return result;
+        }
+
+
+
 
         /// <summary>
         /// Computes a topological execution order of nodes based on their dependencies.

Editor/Scripts/Editor/Nodes/Types/Image/From Path Nodes.meta

@@ -0,0 +1,3 @@
+fileFormatVersion: 2
+guid: fd58cf45d01e429abcb9b8f4e3894b7a
+timeCreated: 1746240608

Editor/Scripts/Editor/Nodes/Types/Image/From Path Nodes/FromPathNode.cs

@@ -0,0 +1,43 @@
+using System.IO;
+using ImageProcessingGraph.Editor.Nodes.NodeAttributes;
+using UnityEditor;
+using UnityEngine;
+
+namespace ImageProcessingGraph.Editor.Nodes.Types.Image.From_Path_Nodes
+{
+    public class FromPathNode<T> : BaseImageNode where T : UnityEngine.Object
+    {
+        [NodeAttributes.Input("Path")] public string path;
+        [NodeAttributes.Output("Output")] public T output;
+
+        public override void Process()
+        {
+            if (string.IsNullOrEmpty(path))
+            {
+                throw new System.ArgumentException("Path is empty or null. Cannot load asset.");
+            }
+
+            output = AssetDatabase.LoadAssetAtPath<T>(path);
+
+            if (output == null)
+            {
+                throw new System.Exception($"Failed to load asset of type {typeof(T)} at path: {path}.");
+            }
+        }
+
+        public override void CleanUp()
+        {
+            output = null;
+            path = null;
+        }
+    }
+    
+    [NodeInfo("Load Texture2D From path", "Load From Path/Texture2D")]
+    public class Texture2DFromPath : FromPathNode<Texture2D> { }
+    
+    [NodeInfo("Load Mesh From path", "Load From Path/Mesh")]
+    public class MeshFromPath : FromPathNode<Mesh> { }
+    
+    [NodeInfo("Load Prefab From path", "Load From Path/Prefab")]
+    public class PrefabFromPath : FromPathNode<GameObject> { }
+}

Editor/Scripts/Editor/Nodes/Types/Image/From Path Nodes/FromPathNode.cs.meta

@@ -0,0 +1,3 @@
+fileFormatVersion: 2
+guid: dbdf66c38fa94127a4665bf6fd1ac011
+timeCreated: 1746240631

Editor/Scripts/Editor/Nodes/Types/Image/Variable Node.meta

@@ -0,0 +1,3 @@
+fileFormatVersion: 2
+guid: 899a77acab6b46d9af23756a397e7eea
+timeCreated: 1746228396

Editor/Scripts/Editor/Nodes/Types/Image/Variable Node/VariableNode.cs

@@ -0,0 +1,34 @@
+using ImageProcessingGraph.Editor.Nodes.NodeAttributes;
+using UnityEngine;
+
+namespace ImageProcessingGraph.Editor.Nodes.Types.Image.Variable_Node
+{
+    public class VariableNode<T> : BaseImageNode
+    {
+        public T input;
+        [NodeAttributes.Output("Output")] public T output;
+
+        public override void Process()
+        {
+            if(input != null)
+                this.output = input;
+            else
+                throw new System.NullReferenceException($"Input to VariableNode<{typeof(T).Name}> is null");
+        }
+
+        public override void CleanUp()
+        {
+            input = default;
+            output = default;
+        }
+    }
+
+    [NodeInfo("Texture2D Variable", "Variable/Texture2D")]
+    public class Texture2DVariableNode : VariableNode<Texture2D> { }
+    
+    [NodeInfo("Mesh Variable", "Variable/Mesh")]
+    public class MeshVariableNode : VariableNode<Mesh> { }
+    
+    [NodeInfo("Prefab Variable", "Variable/Prefab")]
+    public class PrefabVariableNode : VariableNode<GameObject> { }
+}

Editor/Scripts/Editor/Nodes/Types/Image/Variable Node/VariableNode.cs.meta

@@ -0,0 +1,3 @@
+fileFormatVersion: 2
+guid: b10ad5cecfc74b548431deb876d3cb9a
+timeCreated: 1746228592

Editor/Scripts/Editor/Windows/Documentation.meta

@@ -0,0 +1,8 @@
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Editor/Scripts/Editor/Windows/Documentation/ImageProcessingGraphDocumentationWindow.cs

@@ -0,0 +1,21 @@
+using UnityEditor;
+using UnityEngine;
+using UnityEngine.UIElements;
+
+public class ImageProcessingGraphDocumentationWindow : EditorWindow
+{
+    [SerializeField]
+    private VisualTreeAsset m_VisualTreeAsset = default;
+
+    [MenuItem("Window/UI Toolkit/ImageProcessingGraphDocumentationWindow")]
+    public static void ShowExample()
+    {
+        ImageProcessingGraphDocumentationWindow wnd = GetWindow<ImageProcessingGraphDocumentationWindow>();
+        wnd.titleContent = new GUIContent("IPT Documentation");
+    }
+
+    public void CreateGUI()
+    {
+        
+    }
+}

Editor/Scripts/Editor/Windows/Documentation/ImageProcessingGraphDocumentationWindow.cs.meta

@@ -0,0 +1,12 @@
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Editor/Scripts/Editor/Windows/Documentation/ImageProcessingGraphDocumentationWindow.uss

@@ -0,0 +1,5 @@
+.custom-label {
+    font-size: 20px;
+    -unity-font-style: bold;
+    color: rgb(68, 138, 255);
+}

Editor/Scripts/Editor/Windows/Documentation/ImageProcessingGraphDocumentationWindow.uss.meta

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Editor/Scripts/Editor/Windows/Documentation/ImageProcessingGraphDocumentationWindow.uxml

@@ -0,0 +1,3 @@
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+    <Style src="project://database/Assets/Unity%20Image%20Processing/Editor/Scripts/Editor/Windows/Documentation/ImageProcessingGraphDocumentationWindow.uss?fileID=7433441132597879392&amp;guid=a3d894085df56784383eca98ee7c9077&amp;type=3#ImageProcessingGraphDocumentationWindow" />
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Editor/Scripts/Editor/Windows/Documentation/ImageProcessingGraphDocumentationWindow.uxml.meta

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