Esempio n. 1
0
        public void DrawGUI(SerializedObject meshBaker, MB3_MeshBakerCommon target, System.Type editorWindowType)
        {
            if (meshBaker == null)
            {
                return;
            }

            meshBaker.Update();

            showInstructions = EditorGUILayout.Foldout(showInstructions, "Instructions:");
            if (showInstructions)
            {
                EditorGUILayout.HelpBox("1. Bake combined material(s).\n\n" +
                                        "2. If necessary set the 'Texture Bake Results' field.\n\n" +
                                        "3. Add scene objects or prefabs to combine or check 'Same As Texture Baker'. For best results these should use the same shader as result material.\n\n" +
                                        "4. Select options and 'Bake'.\n\n" +
                                        "6. Look at warnings/errors in console. Decide if action needs to be taken.\n\n" +
                                        "7. (optional) Disable renderers in source objects.", UnityEditor.MessageType.None);

                EditorGUILayout.Separator();
            }

            MB3_MeshBakerCommon momm = (MB3_MeshBakerCommon)target;

            EditorGUILayout.PropertyField(logLevel, gc_logLevelContent);
            EditorGUILayout.PropertyField(textureBakeResults, gc_textureBakeResultsGUIContent);
            bool doingTextureArray = false;

            if (textureBakeResults.objectReferenceValue != null)
            {
                doingTextureArray  = ((MB2_TextureBakeResults)textureBakeResults.objectReferenceValue).resultType == MB2_TextureBakeResults.ResultType.textureArray;
                showContainsReport = EditorGUILayout.Foldout(showContainsReport, "Shaders & Materials Contained");
                if (showContainsReport)
                {
                    EditorGUILayout.HelpBox(((MB2_TextureBakeResults)textureBakeResults.objectReferenceValue).GetDescription(), MessageType.Info);
                }
            }

            EditorGUILayout.BeginVertical(editorStyles.editorBoxBackgroundStyle);
            EditorGUILayout.LabelField("Objects To Be Combined", EditorStyles.boldLabel);
            if (momm.GetTextureBaker() != null)
            {
                EditorGUILayout.PropertyField(useObjsToMeshFromTexBaker, gc_useTextureBakerObjsGUIContent);
            }
            else
            {
                useObjsToMeshFromTexBaker.boolValue = false;
                momm.useObjsToMeshFromTexBaker      = false;
                GUI.enabled = false;
                EditorGUILayout.PropertyField(useObjsToMeshFromTexBaker, gc_useTextureBakerObjsGUIContent);
                GUI.enabled = true;
            }

            if (!momm.useObjsToMeshFromTexBaker)
            {
                if (GUILayout.Button(gc_openToolsWindowLabelContent))
                {
                    MB3_MeshBakerEditorWindowInterface mmWin = (MB3_MeshBakerEditorWindowInterface)EditorWindow.GetWindow(editorWindowType);
                    mmWin.target = (MB3_MeshBakerRoot)target;
                }

                object[] objs = MB3_EditorMethods.DropZone("Drag & Drop Renderers Or Parents Here To Add Objects To Be Combined", 300, 50);
                MB3_EditorMethods.AddDroppedObjects(objs, momm);

                EditorGUILayout.PropertyField(objsToMesh, gc_objectsToCombineGUIContent, true);
                EditorGUILayout.Separator();
                EditorGUILayout.BeginHorizontal();
                if (GUILayout.Button("Select Objects In Scene"))
                {
                    Selection.objects = momm.GetObjectsToCombine().ToArray();
                    if (momm.GetObjectsToCombine().Count > 0)
                    {
                        SceneView.lastActiveSceneView.pivot = momm.GetObjectsToCombine()[0].transform.position;
                    }
                }
                if (GUILayout.Button(gc_SortAlongAxis))
                {
                    MB3_MeshBakerRoot.ZSortObjects sorter = new MB3_MeshBakerRoot.ZSortObjects();
                    sorter.sortAxis = sortOrderAxis.vector3Value;
                    sorter.SortByDistanceAlongAxis(momm.GetObjectsToCombine());
                }
                EditorGUILayout.PropertyField(sortOrderAxis, GUIContent.none);
                EditorGUILayout.EndHorizontal();
            }
            else
            {
                GUI.enabled = false;
                EditorGUILayout.PropertyField(objsToMesh, gc_objectsToCombineGUIContent, true);
                GUI.enabled = true;
            }
            EditorGUILayout.EndVertical();

            EditorGUILayout.Space();
            EditorGUILayout.LabelField("Output", EditorStyles.boldLabel);
            EditorGUILayout.PropertyField(outputOptions, gc_outputOptoinsGUIContent);
            if (momm.meshCombiner.outputOption == MB2_OutputOptions.bakeIntoSceneObject)
            {
                //todo switch to renderer
                momm.meshCombiner.resultSceneObject = (GameObject)EditorGUILayout.ObjectField("Combined Mesh Object", momm.meshCombiner.resultSceneObject, typeof(GameObject), true);
                if (momm is MB3_MeshBaker)
                {
                    string l = "Mesh";
                    Mesh   m = (Mesh)mesh.objectReferenceValue;
                    if (m != null)
                    {
                        l += " (" + m.GetInstanceID() + ")";
                    }
                    Mesh nm = (Mesh)EditorGUILayout.ObjectField(new GUIContent(l), m, typeof(Mesh), true);
                    if (nm != m)
                    {
                        Undo.RecordObject(momm, "Assign Mesh");
                        ((MB3_MeshCombinerSingle)momm.meshCombiner).SetMesh(nm);
                        mesh.objectReferenceValue = nm;
                    }
                }
            }
            else if (momm.meshCombiner.outputOption == MB2_OutputOptions.bakeIntoPrefab)
            {
                momm.resultPrefab = (GameObject)EditorGUILayout.ObjectField(gc_combinedMeshPrefabGUIContent, momm.resultPrefab, typeof(GameObject), true);
                if (momm is MB3_MeshBaker)
                {
                    string l = "Mesh";
                    Mesh   m = (Mesh)mesh.objectReferenceValue;
                    if (m != null)
                    {
                        l += " (" + m.GetInstanceID() + ")";
                    }
                    Mesh nm = (Mesh)EditorGUILayout.ObjectField(new GUIContent(l), m, typeof(Mesh), true);
                    if (nm != m)
                    {
                        Undo.RecordObject(momm, "Assign Mesh");
                        ((MB3_MeshCombinerSingle)momm.meshCombiner).SetMesh(nm);
                        mesh.objectReferenceValue = nm;
                    }
                }
            }
            else if (momm.meshCombiner.outputOption == MB2_OutputOptions.bakeMeshAssetsInPlace)
            {
                EditorGUILayout.HelpBox("NEW! Try the BatchPrefabBaker component. It makes preparing a batch of prefabs for static/ dynamic batching much easier.", MessageType.Info);
                if (GUILayout.Button("Choose Folder For Bake In Place Meshes"))
                {
                    string newFolder = EditorUtility.SaveFolderPanel("Folder For Bake In Place Meshes", Application.dataPath, "");
                    if (!newFolder.Contains(Application.dataPath))
                    {
                        Debug.LogWarning("The chosen folder must be in your assets folder.");
                    }
                    momm.bakeAssetsInPlaceFolderPath = "Assets" + newFolder.Replace(Application.dataPath, "");
                }
                EditorGUILayout.LabelField("Folder For Meshes: " + momm.bakeAssetsInPlaceFolderPath);
            }

            if (momm is MB3_MultiMeshBaker)
            {
                MB3_MultiMeshCombiner mmc = (MB3_MultiMeshCombiner)momm.meshCombiner;
                mmc.maxVertsInMesh = EditorGUILayout.IntField("Max Verts In Mesh", mmc.maxVertsInMesh);
            }

            //-----------------------------------
            EditorGUILayout.Space();
            EditorGUILayout.LabelField("Settings", EditorStyles.boldLabel);
            bool settingsEnabled = true;

            //------------- Mesh Baker Settings is a bit tricky because it is an interface.



            EditorGUILayout.Space();
            UnityEngine.Object obj = settingsHolder.objectReferenceValue;

            // Don't use a PropertyField because we may not be able to use the assigned object. It may not implement requried interface.
            obj = EditorGUILayout.ObjectField(gc_Settings, obj, typeof(UnityEngine.Object), true);

            if (obj == null)
            {
                settingsEnabled = true;
                settingsHolder.objectReferenceValue = null;
                if (meshBakerSettingsExternal != null)
                {
                    meshBakerSettingsExternal.OnDisable();
                    meshBakerSettingsExternal = null;
                }
            }

            else if (obj is GameObject)
            {
                // Check to see if there is a component on this game object that implements MB_IMeshBakerSettingsHolder
                MB_IMeshBakerSettingsHolder itf = (MB_IMeshBakerSettingsHolder)((GameObject)obj).GetComponent(typeof(MB_IMeshBakerSettingsHolder));
                if (itf != null)
                {
                    settingsEnabled = false;
                    Component settingsHolderComponent = (Component)itf;
                    if (settingsHolder.objectReferenceValue != settingsHolderComponent)
                    {
                        settingsHolder.objectReferenceValue = settingsHolderComponent;
                        meshBakerSettingsExternal           = new MB_MeshBakerSettingsEditor();
                        UnityEngine.Object targetObj;
                        string             propertyName;
                        itf.GetMeshBakerSettingsAsSerializedProperty(out propertyName, out targetObj);
                        SerializedProperty meshBakerSettings = new SerializedObject(targetObj).FindProperty(propertyName);
                        meshBakerSettingsExternal.OnEnable(meshBakerSettings);
                    }
                }
                else
                {
                    settingsEnabled = true;
                    settingsHolder  = null;
                    if (meshBakerSettingsExternal != null)
                    {
                        meshBakerSettingsExternal.OnDisable();
                        meshBakerSettingsExternal = null;
                    }
                }
            }
            else if (obj is MB_IMeshBakerSettingsHolder)
            {
                settingsEnabled = false;
                if (settingsHolder.objectReferenceValue != obj)
                {
                    settingsHolder.objectReferenceValue = obj;
                    meshBakerSettingsExternal           = new MB_MeshBakerSettingsEditor();
                    UnityEngine.Object targetObj;
                    string             propertyName;
                    ((MB_IMeshBakerSettingsHolder)obj).GetMeshBakerSettingsAsSerializedProperty(out propertyName, out targetObj);
                    SerializedProperty meshBakerSettings = new SerializedObject(targetObj).FindProperty(propertyName);
                    meshBakerSettingsExternal.OnEnable(meshBakerSettings);
                }
            }
            else
            {
                Debug.LogError("Object was not a Mesh Baker Settings object.");
            }
            EditorGUILayout.Space();

            if (settingsHolder.objectReferenceValue == null)
            {
                // Use the meshCombiner settings
                meshBakerSettingsThis.DrawGUI(momm.meshCombiner, settingsEnabled, doingTextureArray);
            }
            else
            {
                if (meshBakerSettingsExternal == null)
                {
                    meshBakerSettingsExternal = new MB_MeshBakerSettingsEditor();
                    UnityEngine.Object targetObj;
                    string             propertyName;
                    ((MB_IMeshBakerSettingsHolder)obj).GetMeshBakerSettingsAsSerializedProperty(out propertyName, out targetObj);
                    SerializedProperty meshBakerSettings = new SerializedObject(targetObj).FindProperty(propertyName);
                    meshBakerSettingsExternal.OnEnable(meshBakerSettings);
                }
                meshBakerSettingsExternal.DrawGUI(((MB_IMeshBakerSettingsHolder)settingsHolder.objectReferenceValue).GetMeshBakerSettings(), settingsEnabled, doingTextureArray);
            }

            Color oldColor = GUI.backgroundColor;

            GUI.backgroundColor = buttonColor;
            if (GUILayout.Button("Bake"))
            {
                bake(momm, ref meshBaker);
            }
            GUI.backgroundColor = oldColor;

            string enableRenderersLabel;
            bool   disableRendererInSource = false;

            if (momm.GetObjectsToCombine().Count > 0)
            {
                Renderer r = MB_Utility.GetRenderer(momm.GetObjectsToCombine()[0]);
                if (r != null && r.enabled)
                {
                    disableRendererInSource = true;
                }
            }
            if (disableRendererInSource)
            {
                enableRenderersLabel = "Disable Renderers On Source Objects";
            }
            else
            {
                enableRenderersLabel = "Enable Renderers On Source Objects";
            }
            if (GUILayout.Button(enableRenderersLabel))
            {
                momm.EnableDisableSourceObjectRenderers(!disableRendererInSource);
            }

            meshBaker.ApplyModifiedProperties();
            meshBaker.SetIsDifferentCacheDirty();
        }
Esempio n. 2
0
        public void DrawGUI(SerializedObject meshBaker, MB3_MeshBakerCommon target, UnityEngine.Object[] targets, System.Type editorWindowType)
        {
            if (meshBaker == null)
            {
                return;
            }

            meshBaker.Update();

            showInstructions = EditorGUILayout.Foldout(showInstructions, "Instructions:");
            if (showInstructions)
            {
                EditorGUILayout.HelpBox("1. Bake combined material(s).\n\n" +
                                        "2. If necessary set the 'Texture Bake Results' field.\n\n" +
                                        "3. Add scene objects or prefabs to combine or check 'Same As Texture Baker'. For best results these should use the same shader as result material.\n\n" +
                                        "4. Select options and 'Bake'.\n\n" +
                                        "6. Look at warnings/errors in console. Decide if action needs to be taken.\n\n" +
                                        "7. (optional) Disable renderers in source objects.", UnityEditor.MessageType.None);

                EditorGUILayout.Separator();
            }

            MB3_MeshBakerCommon momm = (MB3_MeshBakerCommon)target;

            EditorGUILayout.PropertyField(logLevel, gc_logLevelContent);
            EditorGUILayout.PropertyField(textureBakeResults, gc_textureBakeResultsGUIContent);
            bool doingTextureArray = false;

            if (textureBakeResults.objectReferenceValue != null)
            {
                doingTextureArray  = ((MB2_TextureBakeResults)textureBakeResults.objectReferenceValue).resultType == MB2_TextureBakeResults.ResultType.textureArray;
                showContainsReport = EditorGUILayout.Foldout(showContainsReport, "Shaders & Materials Contained");
                if (showContainsReport)
                {
                    EditorGUILayout.HelpBox(((MB2_TextureBakeResults)textureBakeResults.objectReferenceValue).GetDescription(), MessageType.Info);
                }
            }

            EditorGUILayout.BeginVertical(editorStyles.editorBoxBackgroundStyle);
            EditorGUILayout.LabelField("Objects To Be Combined", EditorStyles.boldLabel);
            if (momm.GetTextureBaker() != null)
            {
                EditorGUILayout.PropertyField(useObjsToMeshFromTexBaker, gc_useTextureBakerObjsGUIContent);
            }
            else
            {
                useObjsToMeshFromTexBaker.boolValue = false;
                momm.useObjsToMeshFromTexBaker      = false;
                GUI.enabled = false;
                EditorGUILayout.PropertyField(useObjsToMeshFromTexBaker, gc_useTextureBakerObjsGUIContent);
                GUI.enabled = true;
            }

            if (!momm.useObjsToMeshFromTexBaker)
            {
                if (GUILayout.Button(gc_openToolsWindowLabelContent))
                {
                    MB3_MeshBakerEditorWindow mmWin = (MB3_MeshBakerEditorWindow)EditorWindow.GetWindow(editorWindowType);
                    mmWin.SetTarget((MB3_MeshBakerRoot)momm);
                }

                object[] objs = MB3_EditorMethods.DropZone("Drag & Drop Renderers or Parents\n" + "HERE\n" +
                                                           "to add objects to be combined", 300, 50);
                MB3_EditorMethods.AddDroppedObjects(objs, momm);

                EditorGUILayout.PropertyField(objsToMesh, gc_objectsToCombineGUIContent, true);
                EditorGUILayout.Separator();
                EditorGUILayout.BeginHorizontal();
                if (GUILayout.Button("Select Objects In Scene"))
                {
                    List <MB3_MeshBakerCommon> selectedBakers = _getBakersFromTargets(targets);
                    List <GameObject>          obsToCombine   = new List <GameObject>();

                    foreach (MB3_MeshBakerCommon baker in selectedBakers)
                    {
                        obsToCombine.AddRange(baker.GetObjectsToCombine());
                    }
                    Selection.objects = obsToCombine.ToArray();
                    if (momm.GetObjectsToCombine().Count > 0)
                    {
                        SceneView.lastActiveSceneView.pivot = momm.GetObjectsToCombine()[0].transform.position;
                    }
                }
                if (GUILayout.Button(gc_SortAlongAxis))
                {
                    MB3_MeshBakerRoot.ZSortObjects sorter = new MB3_MeshBakerRoot.ZSortObjects();
                    sorter.sortAxis = sortOrderAxis.vector3Value;
                    sorter.SortByDistanceAlongAxis(momm.GetObjectsToCombine());
                }
                EditorGUILayout.PropertyField(sortOrderAxis, GUIContent.none);
                EditorGUILayout.EndHorizontal();
            }
            else
            {
                GUI.enabled = false;
                EditorGUILayout.PropertyField(objsToMesh, gc_objectsToCombineGUIContent, true);
                GUI.enabled = true;
            }
            EditorGUILayout.EndVertical();

            EditorGUILayout.Space();
            EditorGUILayout.LabelField("Output", EditorStyles.boldLabel);
            EditorGUILayout.PropertyField(outputOptions, gc_outputOptoinsGUIContent);
            if (momm.meshCombiner.outputOption == MB2_OutputOptions.bakeIntoSceneObject)
            {
                Transform pgo = (Transform)EditorGUILayout.ObjectField(gc_parentSceneObject, parentSceneObject.objectReferenceValue, typeof(Transform), true);
                if (pgo != null && MB_Utility.IsSceneInstance(pgo.gameObject))
                {
                    parentSceneObject.objectReferenceValue = pgo;
                }
                else
                {
                    parentSceneObject.objectReferenceValue = null;
                }

                //todo switch to renderer
                momm.meshCombiner.resultSceneObject = (GameObject)EditorGUILayout.ObjectField("Combined Mesh Object", momm.meshCombiner.resultSceneObject, typeof(GameObject), true);
                if (momm is MB3_MeshBaker)
                {
                    string l = "Mesh";
                    Mesh   m = (Mesh)mesh.objectReferenceValue;
                    if (m != null)
                    {
                        l += " (" + m.GetInstanceID() + ")";
                    }
                    Mesh nm = (Mesh)EditorGUILayout.ObjectField(gc_combinedMesh, m, typeof(Mesh), true);
                    if (nm != m)
                    {
                        Undo.RecordObject(momm, "Assign Mesh");
                        ((MB3_MeshCombinerSingle)momm.meshCombiner).SetMesh(nm);
                        mesh.objectReferenceValue = nm;
                    }
                }
            }
            else if (momm.meshCombiner.outputOption == MB2_OutputOptions.bakeIntoPrefab)
            {
                if (momm.meshCombiner.settings.renderType == MB_RenderType.skinnedMeshRenderer)
                {
                    EditorGUILayout.HelpBox("The workflow for baking Skinned Meshes into prefabs has changed as of version 29.1. " +
                                            "It is no longer necessary to manually copy bones to the target prefab after baking. This should happen automatically.", MessageType.Info);
                }

                Transform pgo = (Transform)EditorGUILayout.ObjectField(gc_parentSceneObject, parentSceneObject.objectReferenceValue, typeof(Transform), true);
                if (pgo != null && MB_Utility.IsSceneInstance(pgo.gameObject))
                {
                    parentSceneObject.objectReferenceValue = pgo;
                }
                else
                {
                    parentSceneObject.objectReferenceValue = null;
                }

                EditorGUILayout.BeginHorizontal();
                momm.resultPrefab = (GameObject)EditorGUILayout.ObjectField(gc_combinedMeshPrefabGUIContent, momm.resultPrefab, typeof(GameObject), true);
                if (momm.resultPrefab != null)
                {
                    string assetPath = AssetDatabase.GetAssetPath(momm.resultPrefab);
                    if (assetPath == null || assetPath.Length == 0)
                    {
                        Debug.LogError("The " + gc_combinedMeshPrefabGUIContent.text + " must be a prefab asset, not a scene GameObject");
                        momm.resultPrefab = null;
                    }
                    else
                    {
                        MB_PrefabType pt = MBVersionEditor.PrefabUtility_GetPrefabType(momm.resultPrefab);
                        if (pt != MB_PrefabType.prefabAsset)
                        {
                            Debug.LogError("The " + gc_combinedMeshPrefabGUIContent.text + " must be a prefab asset, the prefab type was '" + pt + "'");
                            momm.resultPrefab = null;
                        }
                    }
                }
                else
                {
                    if (GUILayout.Button("Create Empty Prefab"))
                    {
                        if (!Application.isPlaying)
                        {
                            string path          = EditorUtility.SaveFilePanelInProject("Create Empty Prefab", "MyPrefab", "prefab", "Create a prefab containing an empty GameObject");
                            string pathNoFolder  = Path.GetDirectoryName(path);
                            string fileNameNoExt = Path.GetFileNameWithoutExtension(path);
                            List <MB3_MeshBakerCommon> selectedBakers = _getBakersFromTargets(targets);
                            if (selectedBakers.Count > 1)
                            {
                                Debug.Log("About to create prefabs for " + selectedBakers.Count);
                            }
                            int idx = 0;
                            foreach (MB3_MeshBakerCommon baker in selectedBakers)
                            {
                                createEmptyPrefab(baker, pathNoFolder, fileNameNoExt, idx);
                                idx++;
                            }
                        }
                    }
                }
                EditorGUILayout.EndHorizontal();

                EditorGUILayout.PropertyField(resultPrefabLeaveInstanceInSceneAfterBake, gc_resultPrefabLeaveInstanceInSceneAfterBake);
                if (momm is MB3_MeshBaker)
                {
                    string l = "Mesh";
                    Mesh   m = (Mesh)mesh.objectReferenceValue;
                    if (m != null)
                    {
                        l += " (" + m.GetInstanceID() + ")";
                    }
                    Mesh nm = (Mesh)EditorGUILayout.ObjectField(gc_combinedMesh, m, typeof(Mesh), true);
                    if (nm != m)
                    {
                        Undo.RecordObject(momm, "Assign Mesh");
                        ((MB3_MeshCombinerSingle)momm.meshCombiner).SetMesh(nm);
                        mesh.objectReferenceValue = nm;
                    }
                }
            }
            else if (momm.meshCombiner.outputOption == MB2_OutputOptions.bakeMeshAssetsInPlace)
            {
                EditorGUILayout.HelpBox("Try the BatchPrefabBaker component! It makes preparing a batch of prefabs for static/ dynamic batching much easier.", MessageType.Info);
                if (GUILayout.Button("Choose Folder For Bake In Place Meshes"))
                {
                    string newFolder = EditorUtility.SaveFolderPanel("Folder For Bake In Place Meshes", Application.dataPath, "");
                    if (!newFolder.Contains(Application.dataPath))
                    {
                        Debug.LogWarning("The chosen folder must be in your assets folder.");
                    }
                    string folder = "Assets" + newFolder.Replace(Application.dataPath, "");
                    List <MB3_MeshBakerCommon> selectedBakers = _getBakersFromTargets(targets);
                    Undo.RecordObjects(targets, "Undo Set Folder");
                    foreach (MB3_MeshBakerCommon baker in selectedBakers)
                    {
                        baker.bakeAssetsInPlaceFolderPath = folder;
                        EditorUtility.SetDirty(baker);
                    }
                }

                EditorGUILayout.LabelField("Folder For Meshes: " + momm.bakeAssetsInPlaceFolderPath);
            }

            if (momm is MB3_MultiMeshBaker)
            {
                MB3_MultiMeshCombiner mmc = (MB3_MultiMeshCombiner)momm.meshCombiner;
                mmc.maxVertsInMesh = EditorGUILayout.IntField("Max Verts In Mesh", mmc.maxVertsInMesh);
            }

            //-----------------------------------
            EditorGUILayout.Space();
            EditorGUILayout.LabelField("Settings", EditorStyles.boldLabel);
            bool settingsEnabled = true;

            //------------- Mesh Baker Settings is a bit tricky because it is an interface.



            EditorGUILayout.Space();
            UnityEngine.Object obj = settingsHolder.objectReferenceValue;

            // Don't use a PropertyField because we may not be able to use the assigned object. It may not implement requried interface.
            obj = EditorGUILayout.ObjectField(gc_Settings, obj, typeof(UnityEngine.Object), true);

            if (obj == null)
            {
                settingsEnabled = true;
                settingsHolder.objectReferenceValue = null;
                if (meshBakerSettingsExternal != null)
                {
                    meshBakerSettingsExternal.OnDisable();
                    meshBakerSettingsExternal = null;
                }
            }

            else if (obj is GameObject)
            {
                // Check to see if there is a component on this game object that implements MB_IMeshBakerSettingsHolder
                MB_IMeshBakerSettingsHolder itf = (MB_IMeshBakerSettingsHolder)((GameObject)obj).GetComponent(typeof(MB_IMeshBakerSettingsHolder));
                if (itf != null)
                {
                    settingsEnabled = false;
                    Component settingsHolderComponent = (Component)itf;
                    if (settingsHolder.objectReferenceValue != settingsHolderComponent)
                    {
                        settingsHolder.objectReferenceValue = settingsHolderComponent;
                        meshBakerSettingsExternal           = new MB_MeshBakerSettingsEditor();
                        UnityEngine.Object targetObj;
                        string             propertyName;
                        itf.GetMeshBakerSettingsAsSerializedProperty(out propertyName, out targetObj);
                        SerializedProperty meshBakerSettings = new SerializedObject(targetObj).FindProperty(propertyName);
                        meshBakerSettingsExternal.OnEnable(meshBakerSettings);
                    }
                }
                else
                {
                    settingsEnabled = true;
                    settingsHolder  = null;
                    if (meshBakerSettingsExternal != null)
                    {
                        meshBakerSettingsExternal.OnDisable();
                        meshBakerSettingsExternal = null;
                    }
                }
            }
            else if (obj is MB_IMeshBakerSettingsHolder)
            {
                settingsEnabled = false;
                if (settingsHolder.objectReferenceValue != obj)
                {
                    settingsHolder.objectReferenceValue = obj;
                    meshBakerSettingsExternal           = new MB_MeshBakerSettingsEditor();
                    UnityEngine.Object targetObj;
                    string             propertyName;
                    ((MB_IMeshBakerSettingsHolder)obj).GetMeshBakerSettingsAsSerializedProperty(out propertyName, out targetObj);
                    SerializedProperty meshBakerSettings = new SerializedObject(targetObj).FindProperty(propertyName);
                    meshBakerSettingsExternal.OnEnable(meshBakerSettings);
                }
            }
            else
            {
                Debug.LogError("Object was not a Mesh Baker Settings object.");
            }
            EditorGUILayout.Space();

            if (settingsHolder.objectReferenceValue == null)
            {
                // Use the meshCombiner settings
                meshBakerSettingsThis.DrawGUI(momm.meshCombiner, settingsEnabled, doingTextureArray);
            }
            else
            {
                if (meshBakerSettingsExternal == null)
                {
                    meshBakerSettingsExternal = new MB_MeshBakerSettingsEditor();
                    UnityEngine.Object targetObj;
                    string             propertyName;
                    ((MB_IMeshBakerSettingsHolder)obj).GetMeshBakerSettingsAsSerializedProperty(out propertyName, out targetObj);
                    SerializedProperty meshBakerSettings = new SerializedObject(targetObj).FindProperty(propertyName);
                    meshBakerSettingsExternal.OnEnable(meshBakerSettings);
                }
                meshBakerSettingsExternal.DrawGUI(((MB_IMeshBakerSettingsHolder)settingsHolder.objectReferenceValue).GetMeshBakerSettings(), settingsEnabled, doingTextureArray);
            }

            Color oldColor = GUI.backgroundColor;

            GUI.backgroundColor = buttonColor;
            if (GUILayout.Button("Bake"))
            {
                List <MB3_MeshBakerCommon> selectedBakers = _getBakersFromTargets(targets);
                if (selectedBakers.Count > 1)
                {
                    Debug.Log("About to bake " + selectedBakers.Count);
                }
                foreach (MB3_MeshBakerCommon baker in selectedBakers)
                {
                    // Why are we caching and recreating the SerializedObject? Because "bakeIntoPrefab" corrupts the serialized object
                    // and the meshBaker SerializedObject throws an NRE the next time it gets used.
                    MB3_MeshBakerCommon mbr = (MB3_MeshBakerCommon)meshBaker.targetObject;
                    bake(baker);
                    meshBaker = new SerializedObject(mbr);
                }
            }
            GUI.backgroundColor = oldColor;

            string enableRenderersLabel;
            bool   disableRendererInSource = false;

            if (momm.GetObjectsToCombine().Count > 0)
            {
                Renderer r = MB_Utility.GetRenderer(momm.GetObjectsToCombine()[0]);
                if (r != null && r.enabled)
                {
                    disableRendererInSource = true;
                }
            }
            if (disableRendererInSource)
            {
                enableRenderersLabel = "Disable Renderers On Source Objects";
            }
            else
            {
                enableRenderersLabel = "Enable Renderers On Source Objects";
            }
            if (GUILayout.Button(enableRenderersLabel))
            {
                List <MB3_MeshBakerCommon> selectedBakers = _getBakersFromTargets(targets);
                foreach (MB3_MeshBakerCommon baker in selectedBakers)
                {
                    baker.EnableDisableSourceObjectRenderers(!disableRendererInSource);
                }
            }

            meshBaker.ApplyModifiedProperties();
            meshBaker.SetIsDifferentCacheDirty();
        }