public static List <pixel> FindGridForCentrePixel(List <pixel> source, pixel centrePixel, Bitmap image, int currentIndex)
{
List <pixel> PixelGrid = new List <pixel>();
int rowEnd = image.Width - 1;
pixel X00 = (currentIndex - rowEnd) - 1 > -1 ? source[(currentIndex - rowEnd) - 1]: source[currentIndex];
pixel X01 = (currentIndex - rowEnd) > -1 ? source[(currentIndex - rowEnd)] : source[currentIndex];
pixel X02 = (currentIndex - rowEnd) + 1 > -1 ? source[(currentIndex - rowEnd) + 1] : source[currentIndex];
pixel X10 = currentIndex - 1 > -1? source[currentIndex - 1]: source[currentIndex];
pixel X11 = source[currentIndex];
pixel X12 = currentIndex + 1 < source.Count - 1 ? source[currentIndex + 1] : source[currentIndex];
pixel X20 = (currentIndex + rowEnd) - 1 < source.Count - 1? source[(currentIndex + rowEnd) - 1] : source[currentIndex];
pixel X21 = (currentIndex + rowEnd) < source.Count - 1 ? source[(currentIndex + rowEnd)] : source[currentIndex];
pixel X22 = (currentIndex + rowEnd) + 1 < source.Count - 1 ? source[(currentIndex + rowEnd) + 1] : source[currentIndex];
PixelGrid.Add(X00);
PixelGrid.Add(X01);
PixelGrid.Add(X02);
PixelGrid.Add(X10);
PixelGrid.Add(X11);
PixelGrid.Add(X12);
PixelGrid.Add(X20);
PixelGrid.Add(X21);
PixelGrid.Add(X22);
return(PixelGrid);
}
public static List <pixel> GetPixelListFromBitmap(Bitmap sourceImage)
{
BitmapData sourceData = sourceImage.LockBits(new Rectangle(0, 0,
sourceImage.Width, sourceImage.Height),
ImageLockMode.ReadOnly, PixelFormat.Format32bppArgb);
byte[] sourceBuffer = new byte[sourceData.Stride * sourceData.Height];
Marshal.Copy(sourceData.Scan0, sourceBuffer, 0, sourceBuffer.Length);
sourceImage.UnlockBits(sourceData);
List <pixel> pixelList = new List <pixel>();
int x = 0;
int y = 0;
using (MemoryStream memoryStream = new MemoryStream(sourceBuffer))
{
memoryStream.Position = 0;
BinaryReader binaryReader = new BinaryReader(memoryStream);
while (memoryStream.Position + 4 <= memoryStream.Length)
{
pixel pixel = new pixel(binaryReader.ReadBytes(4), x, y);
pixelList.Add(pixel);
x += 1;
if (x >= sourceData.Width) //if x length is greater than image width...
{
x = 0; //reset x to 0
y += 1; //create a new line (y value)
}
}
binaryReader.Close();
}
return(pixelList);
}