Question

这是我将图像分成9个部分的代码

                imgs = new Bitmap[3, 3];
                int width, height;
                width = _thePicture.Width / 3;
                height = _thePicture.Height / 3;
                for (int x = 0; x < 3; ++x)
                {
                    for (int y = 0; y < 3; ++y)
                    {
                        // Create the sliced bitmap
                        imgs[x,y] = Bitmap.CreateBitmap(_thePicture, x * width, y * height, width, height);
                    }
                }

                _img1.SetImageBitmap(imgs[0, 0]);
                _img2.SetImageBitmap(imgs[1, 0]);
                _img3.SetImageBitmap(imgs[2, 0]);
                _img4.SetImageBitmap(imgs[0, 1]);
                _img5.SetImageBitmap(imgs[1, 1]);
                _img6.SetImageBitmap(imgs[2, 1]);
                _img7.SetImageBitmap(imgs[0, 2]);
                _img8.SetImageBitmap(imgs[1, 2]);
                _img9.SetImageBitmap(imgs[2, 2]);

这将裁剪图像并插入位图的矩阵数组中。问题是用户在纵向模式下拍摄图像，当应用程序将图像以横向形式分割而不是相同的部分。任何帮助将不胜感激。

Answer 1

问题是用户以纵向模式拍摄图像，当应用程序将图像以横向形式分割而不是相同的部分时。

当用户以纵向模式拍照时，您需要给出指示（让我们说isPortrait）。在纵向模式下，您可以在分割图像之前旋转位图：

//set isPortrait=true if user take picture in portrait mode
private async void BtnClick_Click(object sender, System.EventArgs e)
{
  ...
    //rotate the image if user take the picture in portrait mode
    if (isPortrait)
    {
          thisPicture = RotateBitmap(_thisPicture, 90);
    }
    SplitImage(_thisPicture);
}
public  Bitmap RotateBitmap(Bitmap bitmap, int degree)
{
    int w = bitmap.Width;
    int h = bitmap.Height;

    Matrix mtx = new Matrix();
    mtx.SetRotate(degree);

    return Bitmap.CreateBitmap(bitmap, 0, 0, w, h, mtx, true);
}
private void SplitImage(Bitmap _thePicture)
{
    Bitmap[,] imgs;

    imgs = new Bitmap[3, 3];
    int width, height;
    width = _thePicture.Width / 3;
    height = _thePicture.Height / 3;

    for (int x = 0; x < 3; ++x)
    {
        for (int y = 0; y < 3; ++y)
        {

            // Create the sliced bitmap
            imgs[x, y] = Bitmap.CreateBitmap(_thePicture, x * width, y * height, width, height);
        }
    }

    _img1.SetImageBitmap(imgs[0, 0]);
    _img2.SetImageBitmap(imgs[1, 0]);
    _img3.SetImageBitmap(imgs[2, 0]);
    _img4.SetImageBitmap(imgs[0, 1]);
    _img5.SetImageBitmap(imgs[1, 1]);
    _img6.SetImageBitmap(imgs[2, 1]);
    _img7.SetImageBitmap(imgs[0, 2]);
    _img8.SetImageBitmap(imgs[1, 2]);
    _img9.SetImageBitmap(imgs[2, 2]);
}

在xamarin android中分割图像

1 个答案: