/// <summary>
/// Converts back to a bitmap image ready for use again
/// </summary>
/// <returns>The channels all in bitmap form</returns>
public static Bitmap imageBitsToBitMap(imagebits img, int x, int y)
{
var b = new Bitmap(x, y, PixelFormat.Format32bppArgb);
var BoundsRect = new Rectangle(0, 0, x, y);
BitmapData bmpData = b.LockBits(BoundsRect,
ImageLockMode.WriteOnly,
b.PixelFormat);
IntPtr ptr = bmpData.Scan0;
byte[] orderedbits = new byte[img.r.Length * 4];
for (int i = 0; i < img.r.Length; i++)
{
orderedbits[i * 4] = img.b[i];
orderedbits[i * 4 + 1] = img.g[i];
orderedbits[i * 4 + 2] = img.r[i];
orderedbits[i * 4 + 3] = img.a[i];
}
Marshal.Copy(orderedbits, 0, ptr, img.r.Length * 4);
b.UnlockBits(bmpData);
return(b);
}
public static imagebits fastbits(Bitmap source)
{
// Lock the bitmap's bits.
Rectangle rect = new Rectangle(0, 0, source.Width, source.Height);
BitmapData bmpData = source.LockBits(rect, ImageLockMode.ReadWrite, PixelFormat.Format32bppArgb);
// Get the address of the first line.
IntPtr ptr = bmpData.Scan0;
// Declare an array to hold the bytes of the bitmap.
int bytes = bmpData.Stride * source.Height;
byte[] rgbaValues = new byte[bytes];
byte[] r = new byte[bytes / 4];
byte[] g = new byte[bytes / 4];
byte[] b = new byte[bytes / 4];
byte[] a = new byte[bytes / 4];
// Copy the RGB values into the array.
Marshal.Copy(ptr, rgbaValues, 0, bytes);
int count = 0;
int stride = bmpData.Stride;
for (int column = 0; column < bmpData.Height; column++)
{
for (int row = 0; row < bmpData.Width; row++)
{
b[count] = (byte)(rgbaValues[(column * stride) + (row * 4)]);
g[count] = (byte)(rgbaValues[(column * stride) + (row * 4) + 1]);
r[count] = (byte)(rgbaValues[(column * stride) + (row * 4) + 2]);
a[count++] = (byte)(rgbaValues[(column * stride) + (row * 4) + 3]);
}
}
imagebits allbits = new imagebits();
allbits.r = r;
allbits.g = g;
allbits.b = b;
allbits.a = a;
allbits.width = bmpData.Width;
allbits.height = bmpData.Height;
source.UnlockBits(bmpData);
return(allbits);
}
//New extension methods
public static Bitmap toBitMap(this imagebits img)
{
return(imageBitsToBitMap(img));
}
