Question

I am trying to render a texture that was generated by the camera on the iPhone screen. I downloaded the color tracking example from Brad Larson on http://www.sunsetlakesoftware.com/2010/10/22/gpu-accelerated-video-processing-mac-and-ios (direct link for sample code: http://www.sunsetlakesoftware.com/sites/default/files/ColorTracking.zip).

In the ColorTrackingViewController 他使用以下代码制造透镜和相应的文本坐标,使案文为正体:

static const GLfloat squareVertices[] = {
    -1.0f, -1.0f,
    1.0f, -1.0f,
    -1.0f,  1.0f,
    1.0f,  1.0f,
};

static const GLfloat textureVertices[] = {
    1.0f, 1.0f,
    1.0f, 0.0f,
    0.0f,  1.0f,
    0.0f,  0.0f,
};

我不理解为什么这些案文正确协调工作。

我认为,在另一个例子中,我看到,这项工作也正确,应当:

static const GLfloat textureVertices[] = {
    0.0f, 1.0f,
    1.0f, 1.0f,
    0.0f,  0.0f,
    1.0f,  0.0f,
};

我通过了整个法典,但我无法说明上述案文如何正确协调工作。我失踪了什么?

Answer 1

我认为,这是因为电话摄像机的图像数据总是在《特定常规武器公约》90年轮换。为了抵制这种轮换,他制定了案文协调机构,以轮换《特定常规武器公约》90个。有时,两条错误的确使权利成为权利?

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