private static Bitmap ApplyTransform(this Bitmap source, Bitmap destination, Func <byte, byte, byte> transformFunction)
{
if (source == null || destination == null)
{
return(null);
}
var fastSource = new UnsafeBitmap(source);
var fastDestination = new UnsafeBitmap(destination);
fastSource.LockBitmap();
fastDestination.LockBitmap();
for (int i = 0; i < source.Height; i++)
{
for (int j = 0; j < source.Width; j++)
{
var sourcePixel = fastSource.GetPixel(j, i);
var destinationPixel = fastDestination.GetPixel(j, i);
var diffPixel = new PixelData
{
red = transformFunction.Invoke(destinationPixel.red, sourcePixel.red),
green = transformFunction.Invoke(destinationPixel.green, sourcePixel.green),
blue = transformFunction.Invoke(destinationPixel.blue, sourcePixel.blue),
};
fastDestination.SetPixel(j, i, diffPixel);
}
}
fastSource.UnlockBitmap();
fastDestination.UnlockBitmap();
return(fastDestination.Bitmap);
}
public void SetPixel(int x, int y, PixelData colour)
{
PixelData *pixel = PixelAt(x, y);
*pixel = colour;
}
public PixelData GetPixel(int x, int y)
{
PixelData returnValue = *PixelAt(x, y);
return(returnValue);
}
