public double[] SaturateNormalizedPixels(double[] inputNormalizedPixels, ColorVector saturator1, ColorVector saturator2)
{
//For each slot in normalizedPixels (section off blocks of 4 at a time in this case).
double[] outputNormalizedPixels = new double[inputNormalizedPixels.Length];
for (int n = 0; n < outputNormalizedPixels.Length; n += 4)
{
//Make a temporary ColorVector for that slot ([n, n + 3])
ColorVector inputCurrentPixel = new ColorVector(
inputNormalizedPixels[n],
inputNormalizedPixels[n + 1],
inputNormalizedPixels[n + 2],
inputNormalizedPixels[n + 3],
1
);
double dot1 = inputCurrentPixel.Dot(saturator1); //Dot that temporary ColorVector against saturator1.
double dot2 = inputCurrentPixel.Dot(saturator2); //Dot that temporary ColorVector against saturator2.
//Compare these two dot products.
Array.Copy(dot1 > dot2 ? saturator1.ToArray() : saturator2.ToArray(), 0, outputNormalizedPixels, n, 4);
}
return(outputNormalizedPixels);
}
public Bitmap SaturateBitmap(MemoryStream outputBitmapMemoryStream, Bitmap inputBitmap64, ColorVector cv1, ColorVector cv2)
{
inputBitmap64.Save(outputBitmapMemoryStream, ImageFormat.Bmp);
//Initialize primitives.
byte[] currentPixelBytes = new byte[8];
ColorVector cv = new ColorVector();
byte[] cvBytesToCopy = new byte[8];
//Starting at HeaderOffset in inputBitmapMemoryStream.
outputBitmapMemoryStream.Position = BitmapHeaderLength;
for (long n = outputBitmapMemoryStream.Position; n < outputBitmapMemoryStream.Length; n += 8)
{
//Grab 8 bytes.
//Convert them to a ColorVector.
outputBitmapMemoryStream.Read(currentPixelBytes, 0, currentPixelBytes.Length);
cv = new ColorVector(currentPixelBytes);
//Dot that ColorVector with cv1 and cv2.
//For whichever of cv1 and cv2 that has the bigger dot product,
//Turn that ColorVector into a byte[8].
cvBytesToCopy = (cv1.Dot(cv) > cv2.Dot(cv)) ? cv1.ToByteArray() : cv2.ToByteArray();
//Transplant that byte[8] where the original 8 bytes were.
outputBitmapMemoryStream.Position -= 8;
outputBitmapMemoryStream.Write(cvBytesToCopy, 0, cvBytesToCopy.Length);
}
return(new Bitmap(outputBitmapMemoryStream));
}
