// Configures the necessary matrix
// transformation to `surfaceTextureView`.
// This method should be called after the camera preview size is determined in
// setUpCameraOutputs and also the size of `surfaceTextureView` is fixed.
public void ConfigureTransform(int viewWidth, int viewHeight)
{
if (null == surfaceTextureView || null == previewSize)
{
return;
}
var rotation = (int)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);
}
surfaceTextureView.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 = Java.Lang.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);
}
// Configures the necessary {@link android.graphics.Matrix}
// transformation to `mTextureView`.
// This method should be called after the camera preview size is determined in
// setUpCameraOutputs and also the size of `mTextureView` is fixed.
public void ConfigureTransform(int viewWidth, int viewHeight)
{
Activity activity = Activity;
if (null == mTextureView || null == mPreviewSize || 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, mPreviewSize.Height, mPreviewSize.Width);
float centreX = viewRect.CenterX();
float centreY = viewRect.CenterY();
switch (rotation)
{
case (int)SurfaceOrientation.Rotation90:
case (int)SurfaceOrientation.Rotation270:
{
bufferRect.Offset(centreX - bufferRect.CenterX(), centreY - 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, centreX, centreY);
matrix.PostRotate(90 * (rotation - 2), centreX, centreY);
break;
}
case (int)SurfaceOrientation.Rotation180:
matrix.PostRotate(180, centreX, centreY);
break;
}
mTextureView.SetTransform(matrix);
}
