//---------------------------------------------
// MakeAnaglyph.cs (c) 2007 by Charles Petzold
//---------------------------------------------
using System;
using System.IO;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Media;
using System.Windows.Media.Imaging;

class MakeAnaglyph
{
    [STAThread]
    public static void Main()
    {
        Environment.CurrentDirectory = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments), "WTC Photos");

        // Left-Eye Bitmap.
        FileStream stream = new FileStream("East0.png", FileMode.Open);
        BitmapDecoder decoder = BitmapDecoder.Create(stream, BitmapCreateOptions.None, BitmapCacheOption.Default);
        BitmapFrame bitmap = decoder.Frames[0];

        if (bitmap.Format != PixelFormats.Bgr32)
        {
            Console.WriteLine("Expecting format to be Bgr32");
            return;
        }

        uint[] arrayLeft = new uint[bitmap.PixelWidth * bitmap.PixelHeight];
        bitmap.CopyPixels(arrayLeft, bitmap.PixelWidth * 4, 0);
        stream.Close();

        // Right-Eye Bitmap.
        stream = new FileStream("East3.png", FileMode.Open);
        decoder = BitmapDecoder.Create(stream, BitmapCreateOptions.None, BitmapCacheOption.Default);
        bitmap = decoder.Frames[0];

        if (bitmap.Format != PixelFormats.Bgr32)
        {
            Console.WriteLine("Expecting format to be Bgr32");
            return;
        }

        uint[] arrayRight = new uint[bitmap.PixelWidth * bitmap.PixelHeight];
        bitmap.CopyPixels(arrayRight, bitmap.PixelWidth * 4, 0);
        stream.Close();

        if (arrayLeft.Length != arrayRight.Length)
        {
            Console.WriteLine("Expecting bitmaps to be the same size");
            return;
        }

        // Combine pixel bits.
        uint[] arrayAnaglyph = new uint[arrayLeft.Length];

        for (int i = 0; i < arrayAnaglyph.Length; i++)
        {
            arrayAnaglyph[i] = (arrayLeft[i] & 0xFF0000) | (arrayRight[i] & 0x0FFFF);
        }

        // Create new bitmap.
        BitmapSource bitmapAnaglyph = BitmapSource.Create(bitmap.PixelWidth, bitmap.PixelHeight,
                                                          bitmap.DpiX, bitmap.DpiY,
                                                          PixelFormats.Bgr32, null,
                                                          arrayAnaglyph, bitmap.PixelWidth * 4);

        // Save bitmap.
        PngBitmapEncoder encoder = new PngBitmapEncoder();
        encoder.Frames.Add(BitmapFrame.Create(bitmapAnaglyph));
        stream = new FileStream("WTCeastAnaglyph.png", FileMode.Create);
        encoder.Save(stream);
        stream.Close();

        // Display bitmap.
        Window win = new Window();
        Image img = new Image();
        img.Source = bitmapAnaglyph;
        img.Stretch = Stretch.None;
        win.Content = img;

        Application app = new Application();
        app.Run(win);
    }
}