private void CreateTransformedImage()
{
Bitmap bitmap;
ArgbColor[] originalData;
Size size;
IErrorDiffusion dither;
this.CleanUpTransformed();
if (_image == null)
{
return;
}
bitmap = _image;
size = bitmap.Size;
int levels = (int)GrayscaleLevel.Value;
int matrix = (int)ditherMatrix.Value;
originalData = bitmap.GetPixelsFrom32BitArgbImage();
dither = errorDiffusion.GetDitheringInstance();
for (int row = 0; row < size.Height; row++)
{
for (int col = 0; col < size.Width; col++)
{
int index;
ArgbColor current;
ArgbColor transformed;
index = row * size.Width + col;
current = originalData[index];
// transform the pixel - normally this would be some form of color
// reduction. For this sample it's simple threshold based
// monochrome conversion
transformed = PixelUtilities.TransformPixel(current, form1);
originalData[index] = transformed;
// apply a dither algorithm to this pixel
if (dither != null)
{
dither.Diffuse(originalData, current, transformed, col, row, size.Width, size.Height, levels, matrix);
}
}
}
_transformed = originalData.ToBitmap(size);
WorkedPicture.Image = _transformed;
}
