JPCT-AE与Vuforia的集成

Question

我正在集成JPCT-AE与Vuforia作为Vuforia样本ImageTarget茶壶模型。我遵循了凯尔玛和萨姆·拉德的answer，现在我可以渲染我的模型以及茶壶，但只能在风景模式下。

：但是：

当我在ImageTarget中对initApplication()进行更改时

int screenOrientation = ActivityInfo.SCREEN_ORIENTATION_SENSOR; 
                                        or  ORIENTATION_PORTRATE;

我的模型开始在屏幕上到处渲染，这意味着它不是茶壶的渲染方式。据我所知，我们需要改变矩阵的东西来渲染肖像模式的模型。

但我不知道该怎么做。如果你有任何想法，请尽快推荐我。

Answer 1

这是Vuforia示例代码中的一句话：

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Changing Screen.orientation at Runtime上读到，如果你改变方向，屏幕的高度和宽度不会改变。它们保持与默认方向相同，这会导致错误的跟踪。

就我个人而言，我认为如果你改变方向，但为了确保你可以向Vuforia support提出要求，你不会得到一个好的结果。团队。自己检查一下，看看屏幕的高度和宽度在方向切换过程中是否发生了变化。如果是这样的话，你可以用新的值创建你的FrameBuffer，我相信这会解决你的问题。