static void Main(string[] args)
{
Console.WriteLine("Enter the name of picture that you want to be sorted (with extension): ");
string imagePath = Console.ReadLine();
Directory.SetCurrentDirectory(@"..\..\..\Pictures");
// check if the specifed file exists
if (!File.Exists(imagePath))
{
Console.WriteLine("The specifed file \"{0}\" could not be found!", imagePath);
return;
}
// converting from jpg to bmp file
var name = Path.GetFileNameWithoutExtension(imagePath);
Bitmap image = new Bitmap(imagePath);
image.Save(name + ".bmp", ImageFormat.Bmp);
// actual sorting
PixelArray array = new PixelArray(name + ".bmp");
HeapSortArray.Sort(array);
// outputing picture
array.OutputPicture(name + "_Sorted.bmp");
Console.WriteLine("File sorted");
File.Delete(name + ".bmp");
Console.ReadKey();
}
public static void Sort(PixelArray bytes)
{
for (int i = bytes.PixelCount / 2 - 1; i >= 0; i--)
{
Heapify(bytes, bytes.PixelCount, i);
}
for (int i = bytes.PixelCount - 1; i > 0; i--)
{
bytes.SwapAllBytes(0, i);
Heapify(bytes, i, 0);
}
}
private static void Heapify(PixelArray bytes, int size, int root)
{
int maxIndex = root;
int leftIndex = 2 * root + 1;
int rightIndex = 2 * root + 2;
if (leftIndex < size && bytes.GetPixel_Red(leftIndex) > bytes.GetPixel_Red(maxIndex))
{
maxIndex = leftIndex;
}
if (rightIndex < size && bytes.GetPixel_Red(rightIndex) > bytes.GetPixel_Red(maxIndex))
{
maxIndex = rightIndex;
}
if (maxIndex != root)
{
bytes.SwapAllBytes(root, maxIndex);
Heapify(bytes, size, maxIndex);
}
}