将JPCT-AE与Vuforia集成

Question

将JPCT-AE与Vuforia集成

3

我正在将JPCT-AE与Vuforia集成为Vuforia示例ImageTarget茶壶模型。我按照kelmar和Sam Rad的回答（链接在此）进行操作，现在我能够呈现我的模型以及茶壶，但仅在横向模式下。

当我在ImageTarget中更改initApplication()时，出现问题。

int screenOrientation = ActivityInfo.SCREEN_ORIENTATION_SENSOR; 
                                        or  ORIENTATION_PORTRATE;

我的模型在屏幕上出现的位置不对，这意味着渲染方式与茶壶的渲染方式不同。我理解为了在纵向模式下渲染模型，我们需要改变矩阵的一些内容。

但我不知道该怎么做。如果您有任何想法，请简要地告诉我。

- ashunkhs

1个回答

网页内容由stack overflow 提供, 点击上面的

可以查看英文原文，
原文链接

- Sam R. · Answer 1

这是来自Vuforia示例代码的引用：

Set the screen orientation
        //
        // NOTE: It is recommended to set this because of the following reasons:
        //
        //    1.) Before Android 2.2 there is no reliable way to query the
        //        absolute screen orientation from an activity, therefore using 
        //        an undefined orientation is not recommended. Screen 
        //        orientation matching orientation sensor measurements is also
        //        not recommended as every screen orientation change triggers
        //        deinitialization / (re)initialization steps in internal QCAR 
        //        SDK components resulting in unnecessary overhead during 
        //        application run-time.
        //
        //    2.) Android camera drivers seem to always deliver landscape images
        //        thus QCAR SDK components (e.g. camera capturing) need to know 
        //        when we are in portrait mode. Before Android 2.2 there is no 
        //        standard, device-independent way to let the camera driver know 
        //        that we are in portrait mode as each device seems to require a
        //        different combination of settings to rotate camera preview 
        //        frames images to match portrait mode views. Because of this,
        //        we suggest that the activity using the QCAR SDK be locked
        //        to landscape mode if you plan to support Android 2.1 devices
        //        as well. Froyo is fine with both orientations.

我在更改屏幕方向上阅读到，如果你切换屏幕方向，屏幕高度和宽度不会发生变化。他们保持默认方向的状态，这会导致跟踪效果不佳。

个人认为，改变方向并不能得到很好的结果，但为了确保，您可以向Vuforia支持团队咨询。您可以自行检查屏幕高度和宽度是否在方向切换时发生变化。如果是，您可以使用新值创建FrameBuffer，我相信这将解决您的问题。