public Bitmap Apply(Bitmap sourceBitmap, Matrix matrix)
{
RotateFlipType flipType;
if (Angle == 90)
{
matrix.Rotate(90, MatrixOrder.Append);
matrix.Translate(sourceBitmap.Height, 0, MatrixOrder.Append);
flipType = RotateFlipType.Rotate90FlipNone;
}
else if (Angle == -90 || Angle == 270)
{
flipType = RotateFlipType.Rotate270FlipNone;
matrix.Rotate(-90, MatrixOrder.Append);
matrix.Translate(0, sourceBitmap.Width, MatrixOrder.Append);
}
else
{
throw new NotSupportedException("Currently only an angle of 90 or -90 (270) is supported.");
}
return(sourceBitmap.ApplyRotateFlip(flipType));
}
