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在编辑器窗口插件中使用WWW和UnityWebRequest

unity3d c#

Get Off My Lawn · 技术社区 · 7 年前

在Unity中,我有一个自定义窗口,我试图从AmazonS3加载一个图像并在窗口中显示它。但是,我的函数似乎没有执行。如果我放一个 Debug.Log 调试日志 在调用函数之前( LoadAvatarTexture IEnumerator 在一个环境中不起作用 EditorWindow 类,但为 MonoBehaviour 班级。如何使编辑器窗口加载图像?

public class MyEditorWindow : EditorWindow {

  Texture2D avatarTexture;

  [MenuItem("GameSmart/Player Manager", false, 0)]
  public static void ShowManager() {
    var window = EditorWindow.GetWindow(typeof(MyEditorWindow));
    window.titleContent = new GUIContent("Player Manager");
    window.minSize = new Vector2(400, 300);
  }

  void OnGUI() {
    var loadPlayer = GUILayout.Button("Load Player");
    if (loadPlayer) {
      Debug.Log("I log to the console just fine");
      LoadAvatarTexture("http://dev-avatars.gamesmart.com/default.png");
    }
    if (avatarTexture != null) {
      float aspect = (float)avatarTexture.width / (float)avatarTexture.height;
      Rect previewRect = GUILayoutUtility.GetAspectRect(aspect, GUILayout.Width(100), GUILayout.ExpandWidth(true));
      GUI.DrawTexture(previewRect, avatarTexture, ScaleMode.ScaleToFit, true, aspect);
    }
  }

  IEnumerator LoadAvatarTexture(string url) {
    Debug.Log("I do not log to the console");
    var www = new WWW(url);
    yield return www;
    avatarTexture = www.texture;
  }

}

1 回复 | 直到 7 年前

Programmer 7 年前

但是,我的函数似乎没有执行。

那是因为 LoadAvatarTexture StartCoroutine 功能。例如 StartCoroutine(LoadAvatarTexture())

启动程序 在您的特定情况下不起作用,因为这是一个编辑器插件需要实例 MonoBehaviour 工作。您只能访问当您的脚本从但事实并非如此。

您有两个选择:

. 继续拥有 加载纹理 单一行为

LoadAvatarTexture("http://dev-avatars.gamesmart.com/default.png");

具有

//Get camera's MonoBehaviour
MonoBehaviour camMono = Camera.main.GetComponent<MonoBehaviour>();
//Use it to start your coroutine function
camMono.StartCoroutine(LoadAvatarTexture("http://dev-avatars.gamesmart.com/default.png"));

请注意,在使用请求之前必须检查错误。下面是你的新照片修改函数以检查错误:

IEnumerator LoadAvatarTexture(string url)
{
    Debug.Log("I do not log to the console");
    var www = new WWW(url);
    yield return www;
    if (string.IsNullOrEmpty(www.error))
        avatarTexture = www.texture;
    else
        Debug.Log(www.error);
}

2. . 另一个选择是使 void )函数而不是协程函数,然后使用 WWW.isDone 确定请求何时完成。

void OnGUI()
{
    var loadPlayer = GUILayout.Button("Load Player");
    if (loadPlayer)
    {
        Debug.Log("I log to the console just fine");
        LoadAvatarTexture("http://dev-avatars.gamesmart.com/default.png");
    }

    //Check if request is done then get the texture
    if (www != null && www.isDone)
    {
        if (string.IsNullOrEmpty(www.error))
            avatarTexture = www.texture;
        else
            Debug.Log(www.error);

        //Reset
        www = null;
    }

    if (avatarTexture != null)
    {
        float aspect = (float)avatarTexture.width / (float)avatarTexture.height;
        Rect previewRect = GUILayoutUtility.GetAspectRect(aspect, GUILayout.Width(100), GUILayout.ExpandWidth(true));
        GUI.DrawTexture(previewRect, avatarTexture, ScaleMode.ScaleToFit, true, aspect);
    }
}

WWW www;
void LoadAvatarTexture(string url)
{
    Debug.Log("I do not log to the console");
    www = new WWW(url);
    if (string.IsNullOrEmpty(www.error))
        avatarTexture = www.texture;
    else
        Debug.Log(www.error);
}