feat: generate material assets if not present

Assets/Speckle Connector/ConverterUnity.Geometry.cs

@@ -396,10 +396,15 @@ namespace Objects.Converter.Unity
       if (renderMaterial != null)
       {
         // 1. match material by name, if any
-        var matByName = ContextObjects.FirstOrDefault(x => ((Material)x.NativeObject).name == renderMaterial.name);
-        if (matByName != null)
+        Material matByName = null;
+        
+        foreach (var _mat in ContextObjects)
         {
-          return matByName.NativeObject as Material;
+          if (((Material)_mat.NativeObject).name == renderMaterial.name)
+          {
+            if (matByName == null) matByName = (Material)_mat.NativeObject;
+            else Debug.LogWarning("There is more than one Material with the name \'" + renderMaterial.name + "\'!", (Material)_mat.NativeObject);
+          }
         }
 
         // 2. re-create material by setting diffuse color and transparency on standard shaders
@@ -411,10 +416,22 @@ namespace Objects.Converter.Unity
 
         var c = renderMaterial.diffuse.ToUnityColor();
         mat.color = new Color(c.r, c.g, c.b, Convert.ToSingle(renderMaterial.opacity));
+        mat.name = renderMaterial.name;
+
+
+#if UNITY_EDITOR
+        if (Speckle.ConnectorUnity.StreamManager.GenerateMaterials)
+        {
+          if (!AssetDatabase.IsValidFolder("Assets/Resources")) AssetDatabase.CreateFolder("Assets", "Resources");
+          if (!AssetDatabase.IsValidFolder("Assets/Resources/Materials")) AssetDatabase.CreateFolder("Assets/Resources", "Materials");
+          if (!AssetDatabase.IsValidFolder("Assets/Resources/Materials/Speckle Generated")) AssetDatabase.CreateFolder("Assets/Resources/Materials", "Speckle Generated");
+          if (AssetDatabase.LoadAllAssetsAtPath("Assets/Resources/Materials/Speckle Generated/" + mat.name + ".mat").Length == 0) AssetDatabase.CreateAsset(mat, "Assets/Resources/Materials/Speckle Generated/" + mat.name + ".mat");
+        }
+#endif
+
 
         return mat;
       }
-
       // 3. if not renderMaterial was passed, the default shader will be used 
       return mat;
     }

Assets/Speckle Connector/Editor/StreamManagerEditor.cs

@@ -295,6 +295,17 @@ namespace Speckle.ConnectorUnity
       EditorGUILayout.EndHorizontal();
       #endregion
 
+      #region Generate Materials
+      EditorGUILayout.BeginHorizontal();
+
+      GUILayout.Label("Generate material assets");
+      GUILayout.FlexibleSpace();
+      StreamManager.GenerateMaterials = GUILayout.Toggle(StreamManager.GenerateMaterials, "");
+
+      EditorGUILayout.EndHorizontal();
+      #endregion
+
+
       EditorGUILayout.BeginHorizontal();
 
       if (GUILayout.Button("Receive!"))

Assets/Speckle Connector/RecursiveConverter.cs

@@ -24,12 +24,13 @@ namespace Speckle.ConnectorUnity
     {
       //using the ApplicationPlaceholderObject to pass materials
       //available in Assets/Materials to the converters
-      var materials = Resources.LoadAll("Materials", typeof(Material)).Cast<Material>()
-          .Select(x => new ApplicationPlaceholderObject { NativeObject = x }).ToList();
-      _converter.SetContextObjects(materials);
+      var materials = Resources.LoadAll("", typeof(Material)).Cast<Material>().ToArray();
+      if (materials.Length == 0) Debug.LogWarning("To automatically assign materials to recieved meshes, materials have to be in the \'Assets/Resources\' folder!");
+      var placeholderObjects = materials.Select(x => new ApplicationPlaceholderObject { NativeObject = x }).ToList();
+      _converter.SetContextObjects(placeholderObjects);
 
 
-      // case 1: it's an item that has a direct conversion method, eg a point
+            // case 1: it's an item that has a direct conversion method, eg a point
       if (_converter.CanConvertToNative(@base))
       {
         var go = TryConvertItemToNative(@base);

Assets/Speckle Connector/StreamManager.cs

@@ -31,6 +31,11 @@ namespace Speckle.ConnectorUnity
     public List<Stream> Streams;
     public List<Branch> Branches;
 
+
+#if UNITY_EDITOR
+    public static bool GenerateMaterials = false;
+#endif
+
     public GameObject ConvertRecursivelyToNative(Base @base, string id)
     {