// Configures the necessary {@link android.graphics.Matrix}
// transformation to `_textureView`.
// This method should be called after the camera preview size is determined in
// setUpCameraOutputs and also the size of `_textureView` is fixed.
public void ConfigureTransform(int viewWidth, int viewHeight)
{
Activity activity = Activity;
if (null == _textureView || null == _previewSize || null == activity)
{
return;
}
var rotation = (int)activity.WindowManager.DefaultDisplay.Rotation;
Matrix matrix = new Matrix();
RectF viewRect = new RectF(0, 0, viewWidth, viewHeight);
RectF bufferRect = new RectF(0, 0, _previewSize.Height, _previewSize.Width);
float centerX = viewRect.CenterX();
float centerY = viewRect.CenterY();
if ((int)SurfaceOrientation.Rotation90 == rotation || (int)SurfaceOrientation.Rotation270 == rotation)
{
bufferRect.Offset(centerX - bufferRect.CenterX(), centerY - bufferRect.CenterY());
matrix.SetRectToRect(viewRect, bufferRect, Matrix.ScaleToFit.Fill);
float scale = Math.Max((float)viewHeight / _previewSize.Height, (float)viewWidth / _previewSize.Width);
matrix.PostScale(scale, scale, centerX, centerY);
matrix.PostRotate(90 * (rotation - 2), centerX, centerY);
}
else if ((int)SurfaceOrientation.Rotation180 == rotation)
{
matrix.PostRotate(180, centerX, centerY);
}
_textureView.SetTransform(matrix);
}
public void ConfigureTransform(int viewWidth, int viewHeight)
{
if (null == mTextureView || null == mPreviewSize)
{
return;
}
var windowManager = Context.GetSystemService(Context.WindowService).JavaCast <IWindowManager>();
var rotation = (int)windowManager.DefaultDisplay.Rotation;
Matrix matrix = new Matrix();
RectF viewRect = new RectF(0, 0, viewWidth, viewHeight);
RectF bufferRect = new RectF(0, 0, mPreviewSize.Height, mPreviewSize.Width);
float centerX = viewRect.CenterX();
float centerY = viewRect.CenterY();
if ((int)SurfaceOrientation.Rotation90 == rotation || (int)SurfaceOrientation.Rotation270 == rotation)
{
bufferRect.Offset(centerX - bufferRect.CenterX(), centerY - bufferRect.CenterY());
matrix.SetRectToRect(viewRect, bufferRect, Matrix.ScaleToFit.Fill);
float scale = System.Math.Max((float)viewHeight / mPreviewSize.Height, (float)viewWidth / mPreviewSize.Width);
matrix.PostScale(scale, scale, centerX, centerY);
matrix.PostRotate(90 * (rotation - 2), centerX, centerY);
}
else if ((int)SurfaceOrientation.Rotation180 == rotation)
{
matrix.PostRotate(180, centerX, centerY);
}
mTextureView.SetTransform(matrix);
}
/// <summary>
/// Configures the necessary transformation to mTextureView.
/// This method should be called after the camera preciew size is determined in openCamera, and also the size of mTextureView is fixed
/// </summary>
/// <param name="viewWidth">The width of mTextureView</param>
/// <param name="viewHeight">VThe height of mTextureView</param>
private void ConfigureTransform(int viewWidth, int viewHeight)
{
Activity activity = Activity;
if (mTextureView == null || mPreviewSize == null || activity == null)
{
return;
}
SurfaceOrientation rotation = activity.WindowManager.DefaultDisplay.Rotation;
Matrix matrix = new Matrix();
RectF viewRect = new RectF(0, 0, viewWidth, viewHeight);
RectF bufferRect = new RectF(0, 0, mPreviewSize.Width, mPreviewSize.Height);
float centerX = viewRect.CenterX();
float centerY = viewRect.CenterY();
if (rotation == SurfaceOrientation.Rotation90 || rotation == SurfaceOrientation.Rotation270)
{
bufferRect.Offset(centerX - bufferRect.CenterX(), centerY - bufferRect.CenterY());
matrix.SetRectToRect(viewRect, bufferRect, Matrix.ScaleToFit.Fill);
float scale = Math.Max((float)viewHeight / mPreviewSize.Height, (float)viewWidth / mPreviewSize.Width);
matrix.PostScale(scale, scale, centerX, centerY);
matrix.PostRotate(90 * ((int)rotation - 2), centerX, centerY);
}
mTextureView.SetTransform(matrix);
}