// Native GDI+ Bitmap!
internal static Image Render1(Bitmap image, ConvolutionFilter filter)
{
var width = image.Width;
var height = image.Height;
var source = new FastBitmap(image);
var result = new FastBitmap(image.Width, image.Height);
Parallel.For(0, height, y =>
{
for (var x = 0; x < width; ++x)
{
var neighbours = GetNeighbours(x, y, width, height, (nx, ny, i) => (nx >= 0 && nx < width && ny >= 0 && ny < height) == false
? Color.FromArgb(0, 0, 0)
: source.GetPixel(nx, ny));
result.SetPixel(x, y, filter.Compute(neighbours));
}
});
return(result.Bitmap);
}
// Custom Array!
internal static Image Render2(Bitmap image, ConvolutionFilter filter)
{
var width = image.Width;
var height = image.Height;
var source = BitmapUtility.ToColorArray(image);
var result = new ColorRaw[width * height];
Parallel.For(0, height, y =>
{
for (var x = 0; x < width; ++x)
{
var offset = y * width + x;
var neighbours = GetNeighbours(x, y, width, height, (nx, ny, i) => (nx >= 0 && nx < width && ny >= 0 && ny < height) == false
? ColorRaw.FromRgb(0, 0, 0)
: source[i]);
result[offset] = filter.Compute(neighbours);
}
});
return(BitmapUtility.FromColorArray(result, image.Width, image.Height));
}