static void refreshBlankImage(ImageSource templateImage, ref BitmapSource blankImage)
{
if (blankImage != null)
{
if (blankImage.Height == templateImage.Height &&
blankImage.Width == templateImage.Width)
{
return;
}
}
int stride = BitmapUtilities.CalculateStride(PixelFormats.Bgra32, (int)templateImage.Width);
byte[] pixelValues = new byte[(int)templateImage.Height * stride];
for (int i = 0; i < pixelValues.Length; i = i + 4)
{
pixelValues[i] = 0;
pixelValues[i + 1] = 0;
pixelValues[i + 2] = 0;
pixelValues[i + 3] = 255;
}
blankImage = BitmapSource.Create((int)templateImage.Width, (int)templateImage.Height, 96, 96, PixelFormats.Bgra32, null, pixelValues, stride);
}