var bakeAlpha = false;
    var bakeMainTexAsWhite = false;
    var minTextureResolution = 8;
    var maxTextureResolution = 2048;

    var emptyScene = false;
    var useCustomLights = false;
    var ambient = Color.black;
    
    static var kLights = 3;
    var enableLight = new boolean[kLights];
    var colorLight = new Color[kLights];
    var dirLight = new Vector2[kLights];
    
    function BakeMaterialSettings ()
    {
        Load ();
    }
    
    function Load ()
    {
        bakeAlpha = EditorPrefs.GetBool(kEditorPrefsName + ".bakeAlpha");
        bakeMainTexAsWhite = EditorPrefs.GetBool(kEditorPrefsName + ".bakeMainTexAsWhite");
        minTextureResolution = EditorPrefs.GetInt(kEditorPrefsName + ".minTextureResolution", 8);
        maxTextureResolution = EditorPrefs.GetInt(kEditorPrefsName + ".maxTextureResolution", 2048);

        emptyScene = EditorPrefs.GetBool(kEditorPrefsName + ".emptyScene");
        useCustomLights = EditorPrefs.GetBool(kEditorPrefsName + ".useCustomLights");
        ambient.r = EditorPrefs.GetFloat(kEditorPrefsName + ".ambient.r");
        ambient.g = EditorPrefs.GetFloat(kEditorPrefsName + ".ambient.g");
        ambient.b = EditorPrefs.GetFloat(kEditorPrefsName + ".ambient.b");
        ambient.a = EditorPrefs.GetFloat(kEditorPrefsName + ".ambient.a", 1.0f);
        
        for (var q = 0; q < kLights; ++q)
        {
            enableLight[q] = EditorPrefs.GetBool(kEditorPrefsName + ".enableLight" + q);
            colorLight[q].r = EditorPrefs.GetFloat(kEditorPrefsName + ".color.r" + q, 0.5f);
            colorLight[q].g = EditorPrefs.GetFloat(kEditorPrefsName + ".color.g" + q, 0.5f);
            colorLight[q].b = EditorPrefs.GetFloat(kEditorPrefsName + ".color.b" + q, 0.5f);
            colorLight[q].a = EditorPrefs.GetFloat(kEditorPrefsName + ".color.a" + q, 1.0f);
            dirLight[q].x = EditorPrefs.GetFloat(kEditorPrefsName + ".dir.x" + q);
            dirLight[q].y = EditorPrefs.GetFloat(kEditorPrefsName + ".dir.y" + q);
        }
    }
    
    function Save ()
    {
        EditorPrefs.SetBool(kEditorPrefsName + ".bakeAlpha", bakeAlpha);
        EditorPrefs.SetBool(kEditorPrefsName + ".bakeMainTexAsWhite", bakeMainTexAsWhite);
        EditorPrefs.SetInt(kEditorPrefsName + ".minTextureResolution", minTextureResolution);
        EditorPrefs.SetInt(kEditorPrefsName + ".maxTextureResolution", maxTextureResolution);

        EditorPrefs.GetBool(kEditorPrefsName + ".emptyScene", emptyScene);
        EditorPrefs.SetBool(kEditorPrefsName + ".useCustomLights", useCustomLights);
        EditorPrefs.SetFloat(kEditorPrefsName + ".ambient.r", ambient.r);
        EditorPrefs.SetFloat(kEditorPrefsName + ".ambient.g", ambient.g);
        EditorPrefs.SetFloat(kEditorPrefsName + ".ambient.b", ambient.b);
        EditorPrefs.SetFloat(kEditorPrefsName + ".ambient.a", ambient.a);

        for (var q = 0; q < kLights; ++q)
        {
            EditorPrefs.SetBool(kEditorPrefsName + ".enableLight" + q, enableLight[q]);
            EditorPrefs.SetFloat(kEditorPrefsName + ".color.r" + q, colorLight[q].r);
            EditorPrefs.SetFloat(kEditorPrefsName + ".color.g" + q, colorLight[q].g);
            EditorPrefs.SetFloat(kEditorPrefsName + ".color.b" + q, colorLight[q].b);
            EditorPrefs.SetFloat(kEditorPrefsName + ".color.a" + q, colorLight[q].a);
            EditorPrefs.SetFloat(kEditorPrefsName + ".dir.x" + q, dirLight[q].x);
            EditorPrefs.SetFloat(kEditorPrefsName + ".dir.y" + q, dirLight[q].y);
        }
    }
}

class BakeMaterial extends EditorWindow
{
    private static var kMateriBakeNodeName = "__MateriaBakeSetup";
    private static var kWindowMinSize = Vector2 (300, 386);
    
    private static var settings : BakeMaterialSettings;
    private static var visible : boolean = false;
    
    private var camera : GameObject;
    private var plane : GameObject;
    private var previewTexture : Texture;
    private var lights : GameObject[] = new GameObject[BakeMaterialSettings.kLights];
    private var stateChanged = false;
    
    private var texViewScrollPosition = Vector2.zero;
    private var lastMaterial : Material;
    
    private var originalScene = "";
    
    private var scheduleBakeOnNextUpdate = false;

    
    private function SetupScene ()
    {
        DestroyScene ();
        var oldGo = GameObject.Find(kMateriBakeNodeName);
        if (oldGo)
            DestroyImmediate (oldGo);
        camera = new GameObject (kMateriBakeNodeName, Camera);
        plane = GameObject.CreatePrimitive (PrimitiveType.Plane);

        var cam = camera;
        cam.camera.backgroundColor = Color.black;
        cam.camera.clearFlags = CameraClearFlags.SolidColor;
        cam.camera.orthographic = true;
        cam.camera.orthographicSize = 5.0;
        cam.camera.cullingMask = 1 << settings.kBakingLayerShouldBeUnusedInScene;
        
        plane.transform.parent = cam.transform;
        plane.transform.position = Vector3.forward * 10.0;
        plane.transform.rotation = Quaternion.Euler (0, 0, 180) * Quaternion.Euler (-90, 0, 0);
        plane.layer = settings.kBakingLayerShouldBeUnusedInScene;
        
        for (var l in lights)
        {
            l = new GameObject ("Light", Light);
            l.light.type = LightType.Directional;
            l.light.cullingMask = 1 << settings.kBakingLayerShouldBeUnusedInScene;
            l.transform.parent = cam.transform;
            l.active = false;
        }
    }
    
    private function UpdateScene (m : Material)
    {
        for (q = 0; q < settings.kLights; ++q)
        {
            lights[q].active = settings.useCustomLights & settings.enableLight[q];
            lights[q].light.color = settings.colorLight[q];
            lights[q].transform.rotation =
                Quaternion.AngleAxis(settings.dirLight[q].x, Vector3.up) *
                Quaternion.AngleAxis(settings.dirLight[q].y, Vector3.right);
        }
        
        if (settings.useCustomLights)
            RenderSettings.ambientLight = settings.ambient;
        else if (settings.emptyScene)
            RenderSettings.ambientLight = Color.white;
            
        plane.renderer.material = m;
    }
        
    private function DestroyScene ()
    {
        GameObject.DestroyImmediate (camera);
        GameObject.DestroyImmediate (plane);
        GameObject.DestroyImmediate (previewTexture);
    }

    function UpdateMaterialPreview (m : Material) : RenderTexture
    {
        if (!m)
            return;
        
        var saveAmbientLight = RenderSettings.ambientLight;
        var saveMainTexture = m.mainTexture;
        if (settings.bakeMainTexAsWhite)
            m.mainTexture = null;
    
        
        // setup
        if (!camera)
            SetupScene ();
        camera.SetActiveRecursively(true);
        UpdateScene (m);
        
        var res = FindLargestTextureResolution (plane.renderer.sharedMaterial, settings.minTextureResolution, settings.maxTextureResolution);
        var rt = RenderCameraToRenderTexture (camera.camera, res.x, res.y);
        
        // restore
        camera.SetActiveRecursively(false);
        RenderSettings.ambientLight = saveAmbientLight;
        m.mainTexture = saveMainTexture;
        
        previewTexture = rt;
        return rt;
    }
    
    function CaptureMaterial(m : Material)
    {
        var matAssetPath = AssetDatabase.GetAssetPath (m);
        var assetPath = System.IO.Path.Combine (System.IO.Path.GetDirectoryName (matAssetPath), System.IO.Path.GetFileNameWithoutExtension (matAssetPath));

        var rt = UpdateMaterialPreview (m);
        RenderTextureToPNG (rt, settings.bakeAlpha, assetPath + ".png");
    }

    function OnEnable ()
    {
        if (!settings)
            settings = new BakeMaterialSettings ();
        SetupScene ();
        visible = true;
    }
    
    function OnDisable ()
    {
        DestroyScene ();
        settings.Save ();
        visible = false;
    }

    static function GetTargetMaterial () : Material
    {
        return EditorUtility.InstanceIDToObject (Selection.activeInstanceID) as Material;
    }

    function OnSelectionChange ()
    {
        Repaint ();
    }

    function Update ()
    {
        var rebuildScene = false;
        if (scheduleBakeOnNextUpdate)
        {
            Bake ();
            scheduleBakeOnNextUpdate = false;
            rebuildScene = true;
        }
        
        if (originalScene == "" && EditorApplication.currentScene == "")
            settings.emptyScene = true;
            
        if (settings.emptyScene && originalScene == "" && EditorApplication.currentScene != "")
        {
            DestroyScene ();
            if (EditorApplication.SaveCurrentSceneIfUserWantsTo ())
            {
                originalScene = EditorApplication.currentScene;
                EditorApplication.NewScene ();
            }
            else
                settings.emptyScene = false;
            rebuildScene = true;            
        }
        else if (!settings.emptyScene && originalScene != "")
        {
            EditorApplication.OpenScene (originalScene);
            rebuildScene = true;
            originalScene = "";
        }
        
        if (rebuildScene)
        {
            SetupScene ();
        }
        
        if (rebuildScene || stateChanged || !settings.emptyScene)
        {
            UpdateMaterialPreview (lastMaterial);
            Repaint ();
            stateChanged = false;
        }
    }
    
    function OnGUI ()
    {
        var material = GetTargetMaterial ();
        if (lastMaterial != material)
            UpdateMaterialPreview (material);
        if (material)
            lastMaterial = material;
        
        EditorGUILayout.BeginHorizontal();
            EditorGUILayout.BeginVertical(GUILayout.MaxWidth(200));
                if (!(originalScene == "" && EditorApplication.currentScene == ""))
                {
                    settings.emptyScene = !EditorGUILayout.BeginToggleGroup("Scene ligthing", !settings.emptyScene);
                    EditorGUILayout.EndToggleGroup();
                }
                settings.useCustomLights = EditorGUILayout.BeginToggleGroup("Custom lighting", settings.useCustomLights);
                if (settings.useCustomLights)
                {
                    EditorGUI.indentLevel = 1;
                    settings.ambient = EditorGUILayout.ColorField("Ambient", settings.ambient);
                    for (var q = 0; q < settings.kLights; ++q)
                    {
                        settings.enableLight[q] = EditorGUILayout.BeginToggleGroup("Light", settings.enableLight[q]);
                        EditorGUI.indentLevel = 2;
                            settings.colorLight[q] = EditorGUILayout.ColorField("Color", settings.colorLight[q]);
                            settings.dirLight[q] = EditorGUILayout.Vector2Field("Direction", settings.dirLight[q]);
                        EditorGUILayout.EndToggleGroup();
                    }
                }
                EditorGUI.indentLevel = 0;
                EditorGUILayout.EndToggleGroup();
                
                settings.bakeAlpha = EditorGUILayout.Toggle("Bake Alpha", settings.bakeAlpha);
                settings.bakeMainTexAsWhite = !EditorGUILayout.Toggle("MainTex", !settings.bakeMainTexAsWhite);
                settings.minTextureResolution = EditorGUILayout.IntField("Min Resolution", settings.minTextureResolution);
                settings.maxTextureResolution = EditorGUILayout.IntField("Max Resolution", settings.maxTextureResolution);
                settings.minTextureResolution = Mathf.Max(2, settings.minTextureResolution);
                settings.maxTextureResolution = Mathf.Max(settings.minTextureResolution, settings.maxTextureResolution);

                EditorGUILayout.BeginHorizontal();
                if (GUILayout.Button("Bake"))
                {
                    CaptureMaterial (lastMaterial);
                }
                if (GUILayout.Button("Bake Selected"))
                {
                    scheduleBakeOnNextUpdate = true;
                }
                EditorGUILayout.EndHorizontal();
                
            EditorGUILayout.EndVertical();
            
            texViewScrollPosition = EditorGUILayout.BeginScrollView (texViewScrollPosition);
                var r = GUILayoutUtility.GetAspectRect(1.0f);
                if (previewTexture)
                    EditorGUI.DrawPreviewTexture(r, previewTexture);
            EditorGUILayout.EndScrollView();        
        EditorGUILayout.EndHorizontal();
        
        if (GUI.changed)
        {
            stateChanged = true;
        }
    }
    
    @MenuItem("Custom/Bake Material ...", false, 5)
    static function CreateBakeEditor()
    {
        var window = EditorWindow.GetWindow(BakeMaterial);
        window.title = "Bake Material";
        window.minSize = kWindowMinSize;
        window.Show();
    }

class CreatePrefabFromSelected : ScriptableObject
{
    const string menuTitle = "GameObject/Create Prefab From Selected";

    /// <summary>
    /// Creates a prefab from the selected game object.
    /// </summary>
    [MenuItem(menuTitle)]
    static void CreatePrefab()
    {
        GameObject[] obj = Selection.gameObjects;

        foreach (GameObject go in obj)
        {
            string name = go.name;
            string localPath = "Assets/" + name + ".prefab";

            if (AssetDatabase.LoadAssetAtPath(localPath, typeof(GameObject)))
            {
                if (EditorUtility.DisplayDialog("Are you sure?", "The prefab already exists. Do you want to overwrite it?", "Yes", "No"))
                {
                    createNew(go, localPath);
                }
            }
            else
            {
                createNew(go, localPath);
            }

        }
    }

    static void createNew(GameObject obj, string localPath)
    {
        Object prefab = EditorUtility.CreateEmptyPrefab(localPath);
        EditorUtility.ReplacePrefab(obj, prefab);
        AssetDatabase.Refresh();

        DestroyImmediate(obj);
        GameObject clone = EditorUtility.InstantiatePrefab(prefab) as GameObject;
    }

public class ObjExporter {

This should be put in your "Editor"-folder. Use by selecting the objects you want to export, and select
the appropriate menu item from "Custom->Export". Exported models are put in a folder called
"ExportedObj" in the root of your Unity-project. Textures should also be copied and placed in the
same folder. */

using UnityEngine;
using UnityEditor;
using System.Collections;
using System.Collections.Generic;
using System.IO;
using System.Text;
using System;

struct ObjMaterial
{
    public string name;
    public string textureName;
}

public class EditorObjExporter : ScriptableObject
{
    private static int vertexOffset = 0;
    private static int normalOffset = 0;
    private static int uvOffset = 0;
    
    
    //User should probably be able to change this. It is currently left as an excercise for
    //the reader.
    private static string targetFolder = "ExportedObj";
    

    private static string MeshToString(MeshFilter mf, Dictionary<string, ObjMaterial> materialList)
    {
        Mesh m = mf.sharedMesh;
        Material[] mats = mf.renderer.sharedMaterials;
        
        StringBuilder sb = new StringBuilder();
        
        sb.Append("g ").Append(mf.name).Append("
");
        foreach(Vector3 lv in m.vertices)
        {
            Vector3 wv = mf.transform.TransformPoint(lv);
        
            //This is sort of ugly - inverting x-component since we're in
            //a different coordinate system than "everyone" is "used to".
            sb.Append(string.Format("v {0} {1} {2}
",-wv.x,wv.y,wv.z));
        }
        sb.Append("
");
        
        foreach(Vector3 lv in m.normals)
        {
            Vector3 wv = mf.transform.TransformDirection(lv);
        
            sb.Append(string.Format("vn {0} {1} {2}
",-wv.x,wv.y,wv.z));
        }
        sb.Append("
");
        
        foreach(Vector3 v in m.uv)
        {
            sb.Append(string.Format("vt {0} {1}
",v.x,v.y));
        }
        
        for (int material=0; material < m.subMeshCount; material ++) {
            sb.Append("
");
            sb.Append("usemtl ").Append(mats[material].name).Append("
");
            sb.Append("usemap ").Append(mats[material].name).Append("
");
                
            //See if this material is already in the materiallist.
            try
         {
              ObjMaterial objMaterial = new ObjMaterial();
              
              objMaterial.name = mats[material].name;
              
              if (mats[material].mainTexture)
                objMaterial.textureName = EditorUtility.GetAssetPath(mats[material].mainTexture);
              else
                objMaterial.textureName = null;
              
              materialList.Add(objMaterial.name, objMaterial);
            }
            catch (ArgumentException)
            {
                //Already in the dictionary
            }

                
            int[] triangles = m.GetTriangles(material);
            for (int i=0;i<triangles.Length;i+=3)
            {
                //Because we inverted the x-component, we also needed to alter the triangle winding.
                sb.Append(string.Format("f {1}/{1}/{1} {0}/{0}/{0} {2}/{2}/{2}
",
                    triangles[i]+1 + vertexOffset, triangles[i+1]+1 + normalOffset, triangles[i+2]+1 + uvOffset));
            }
        }
        
        vertexOffset += m.vertices.Length;
        normalOffset += m.normals.Length;
        uvOffset += m.uv.Length;
        
        return sb.ToString();
    }
    
    private static void Clear()
    {
        vertexOffset = 0;
        normalOffset = 0;
        uvOffset = 0;
    }
    
    private static Dictionary<string, ObjMaterial> PrepareFileWrite()
    {
     Clear();
        
        return new Dictionary<string, ObjMaterial>();
    }
    
    private static void MaterialsToFile(Dictionary<string, ObjMaterial> materialList, string folder, string filename)
    {
     using (StreamWriter sw = new StreamWriter(folder + "/" + filename + ".mtl"))
        {
            foreach( KeyValuePair<string, ObjMaterial> kvp in materialList )
            {
                sw.Write("
");
                sw.Write("newmtl {0}
", kvp.Key);
                sw.Write("Ka  0.6 0.6 0.6
");
                sw.Write("Kd  0.6 0.6 0.6
");
                sw.Write("Ks  0.9 0.9 0.9
");
                sw.Write("d  1.0
");
                sw.Write("Ns  0.0
");
                sw.Write("illum 2
");
                
                if (kvp.Value.textureName != null)
                {
                    string destinationFile = kvp.Value.textureName;
                
                
                    int stripIndex = destinationFile.LastIndexOf('/');//FIXME: Should be Path.PathSeparator;
        
           if (stripIndex >= 0)
                        destinationFile = destinationFile.Substring(stripIndex + 1).Trim();
                    
                    
                    string relativeFile = destinationFile;
                    
                    destinationFile = folder + "/" + destinationFile;
                
                    Debug.Log("Copying texture from " + kvp.Value.textureName + " to " + destinationFile);
                
                    try
                    {
                        //Copy the source file
                        File.Copy(kvp.Value.textureName, destinationFile);
                    }
                    catch
                    {
                    
                    }  
                
                
                    sw.Write("map_Kd {0}", relativeFile);
                }
                    
                sw.Write("