如何加载数据库Fbx文件，不是assetbundle

由于我们要将模型资源放在远程的服务器端，但如果直接放fbx模型是不可以加载的，所以我们可以将fbx做成预设或者是直接将其打包成assetbundle格式的，然后通过www来加载获取。

1.首先要讲一下不同平台下的一个StreamingAssets路径，这是不同的。

//不同平台下StreamingAssets的路径是不同的，这里需要注意一下。

public static readonly string PathURL =

#if UNITY_ANDROID //安卓

"jar:file://" + Application.dataPath + "!/assets/"

#elif UNITY_IPHONE //iPhone

Application.dataPath + "/Raw/"

#elif UNITY_STANDALONE_WIN || UNITY_EDITOR //windows平台和web平台

"file://" + Application.dataPath + "/StreamingAssets/"

#else

string.Empty

#endif

这就获取到了不同平台的一个路径，我们可以将打包的文件放在这些路径下，然后再从这路径去读取资源。

2.关于打包assetbundle的脚本

using UnityEngine

using System.Collections

using UnityEditor

public class Test : Editor

{

//打包单个

[MenuItem("Custom Editor/Create AssetBunldes Main")]

static void CreateAssetBunldesMain ()

{

//获取在Project视图中选择的所有游戏对象

Object[] SelectedAsset = Selection.GetFiltered (typeof(Object), SelectionMode.DeepAssets)

//遍历所有的游戏对象

foreach (Object obj in SelectedAsset)

{

//本地测试：建议最后将Assetbundle放在StreamingAssets文件夹下，如果没有就创建一个，因为移动平台下只能读取这个路径

//StreamingAssets是只读路径，不能写入

//服务器下载：就不需要放在这里，服务器上客户端用www类进行下载。

string targetPath = Application.dataPath + "/StreamingAssets/" + obj.name + ".assetbundle"

if (BuildPipeline.BuildAssetBundle (obj, null, targetPath, BuildAssetBundleOptions.CollectDependencies)) {

Debug.Log(obj.name +"资源打包成功")

}

else

{

Debug.Log(obj.name +"资源打包失败")

}

}

//刷新编辑器

AssetDatabase.Refresh ()

}

[MenuItem("Custom Editor/Create AssetBunldes ALL")]

static void CreateAssetBunldesALL ()

{

Caching.CleanCache ()

string Path = Application.dataPath + "/StreamingAssets/ALL.assetbundle"

Object[] SelectedAsset = Selection.GetFiltered (typeof(Object), SelectionMode.DeepAssets)

foreach (Object obj in SelectedAsset)

{

Debug.Log ("Create AssetBunldes name :" + obj)

}

//这里注意第二个参数就行

if (BuildPipeline.BuildAssetBundle (null, SelectedAsset, Path, BuildAssetBundleOptions.CollectDependencies)) {

AssetDatabase.Refresh ()

} else {

}

}

[MenuItem("Custom Editor/Create Scene")]

static void CreateSceneALL ()

{

//清空一下缓存

Caching.CleanCache()

string Path = Application.dataPath + "/MyScene.unity3d"

string []levels = {"Assets/Level.unity"}

//打包场景

BuildPipeline.BuildPlayer( levels, Path,BuildTarget.WebPlayer, BuildOptions.BuildAdditionalStreamedScenes)

AssetDatabase.Refresh ()

}

}

前提要新手动创建一个StreamingAssets文件夹

3.读取资源，这里只举例从本地读取，跟从网络读取是一样的，可以参考官方文档：

using UnityEngine

using System.Collections

public class RunScript : MonoBehaviour

{

//不同平台下StreamingAssets的路径是不同的，这里需要注意一下。

public static readonly string PathURL =

#if UNITY_ANDROID

"jar:file://" + Application.dataPath + "!/assets/"

#elif UNITY_IPHONE

Application.dataPath + "/Raw/"

#elif UNITY_STANDALONE_WIN || UNITY_EDITOR

"file://" + Application.dataPath + "/StreamingAssets/"

#else

string.Empty

#endif

void OnGUI()

{

if(GUILayout.Button("Main Assetbundle"))

{

//StartCoroutine(LoadMainGameObject(PathURL + "Prefab0.assetbundle"))

//StartCoroutine(LoadMainGameObject(PathURL + "Prefab1.assetbundle"))

StartCoroutine(LoadMainCacheGameObject(PathURL + "Prefab0.assetbundle"))

StartCoroutine(LoadMainCacheGameObject(PathURL + "Prefab1.assetbundle"))

}

if(GUILayout.Button("ALL Assetbundle"))

{

StartCoroutine(LoadALLGameObject(PathURL + "ALL.assetbundle"))

}

if(GUILayout.Button("Open Scene"))

{

StartCoroutine(LoadScene())

}

}

//读取一个资源

private IEnumerator LoadMainGameObject(string path)

{

WWW bundle = new WWW(path)

yield return bundle

//加载到游戏中

yield return Instantiate(bundle.assetBundle.mainAsset)

bundle.assetBundle.Unload(false)

}

//读取全部资源

private IEnumerator LoadALLGameObject(string path)

{

WWW bundle = new WWW(path)

yield return bundle

//通过Prefab的名称把他们都读取出来

Object obj0 = bundle.assetBundle.Load("Prefab0")

Object obj1 = bundle.assetBundle.Load("Prefab1")

//加载到游戏中

yield return Instantiate(obj0)

yield return Instantiate(obj1)

bundle.assetBundle.Unload(false)

}

private IEnumerator LoadMainCacheGameObject(string path)

{

WWW bundle = (path,5)

yield return bundle

//加载到游戏中

yield return Instantiate(bundle.assetBundle.mainAsset)

bundle.assetBundle.Unload(false)

}

private IEnumerator LoadScene()

{

WWW download = ("file://"+Application.dataPath + "/MyScene.unity3d", 1)

yield return download

var bundle = download.assetBundle

Application.LoadLevel ("Level")

}

}

多了去了....

比如FBX STL MAX C4D LWO MB 3DS

以上这些格式大多都对应一种三维软件.....FBX,OBJ,STL等属于通用格式...就是很多三维软件都能打开的格式......MAX,3DS,C4D,MB等属于专用格式...就是这些文件只能用特定的软件才能打开

MAX和3DS格式 对应软件是 3DMAX

C4D对应软件是CINEMA 4D

MB对应软件是MAYA

LWO对应软件是LIGHTWAVE

以上这些格式....全部都可以创建三维人脸模型

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