public static Bitmap addition(Bitmap input, Bitmap overlay)
{
if (input.Width == overlay.Width && input.Height == overlay.Height)
{
raw_image.imagebits sourceImg = input.toImageBits();
raw_image.imagebits overlayImg = overlay.toImageBits();
for (int i = 0; i < sourceImg.b.Length; i++)
{
int alphaValue = overlayImg.a[i];
float percent = (float)alphaValue / 255f;
sourceImg.b[i] = (byte)Convert.ToInt32(sourceImg.b[i] + (overlayImg.b[i] * percent)).Clamp(0, 255);
sourceImg.g[i] = (byte)Convert.ToInt32(sourceImg.g[i] + (overlayImg.g[i] * percent)).Clamp(0, 255);
sourceImg.r[i] = (byte)Convert.ToInt32(sourceImg.r[i] + (overlayImg.r[i] * percent)).Clamp(0, 255);
}
return(sourceImg.toBitMap());
}
else
{
//throw new ArgumentException("Images were not the same dimentions, cannot operate", "overlay");
return(input);
}
}
public static Bitmap brightness(Bitmap input, float value)
{
raw_image.imagebits sourceImg = input.toImageBits();
for (int i = 0; i < sourceImg.b.Length; i++)
{
sourceImg.b[i] = (byte)Convert.ToInt32(sourceImg.b[i] * value).Clamp(0, 255);
sourceImg.g[i] = (byte)Convert.ToInt32(sourceImg.g[i] * value).Clamp(0, 255);
sourceImg.r[i] = (byte)Convert.ToInt32(sourceImg.r[i] * value).Clamp(0, 255);
}
return(sourceImg.toBitMap());
}
public Bitmap applyToImage(Bitmap image)
{
raw_image.imagebits allbits = image.toImageBits();
int gradLen = gradientBits.a.Length;
for (int i = 0; i < allbits.r.Length; i++)
{
int average = (allbits.r[i] + allbits.g[i] + allbits.b[i]) / 3;
allbits.r[i] = gradientBits.r[average.remap(0, 255, 0, gradLen)];
allbits.g[i] = gradientBits.g[average.remap(0, 255, 0, gradLen)];
allbits.b[i] = gradientBits.b[average.remap(0, 255, 0, gradLen)];
}
return(allbits.toBitMap());
}
public static Bitmap greyScaleAverage(this Bitmap input)
{
raw_image.imagebits source = input.toImageBits();
for (int i = 0; i < source.b.Length; i++)
{
int total = 0;
total += source.b[i];
total += source.g[i];
total += source.r[i];
int newVal = total / 3;
source.b[i] = (byte)newVal;
source.g[i] = (byte)newVal;
source.r[i] = (byte)newVal;
}
return(source.toBitMap());
}
/// <summary>
/// Loads an image gradient from disk
/// </summary>
/// <param name="path">The path to load image gradient from</param>
public image_gradient(string path)
{
Bitmap source = new Bitmap(path);
gradientBits = source.toImageBits();
}
