public static Bitmap addition(Bitmap input, Bitmap overlay)
{
if (input.Width == overlay.Width && input.Height == overlay.Height)
{
imgLowLvl.imagebits sourceImg = imgLowLvl.fastbits(input);
imgLowLvl.imagebits overlayImg = imgLowLvl.fastbits(overlay);
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(imgLowLvl.imageBitsToBitMap(sourceImg, input.Width, input.Height));
}
else
{
//throw new ArgumentException("Images were not the same dimentions, cannot operate", "overlay");
return(input);
}
}
public static Bitmap brightness(Bitmap input, float value)
{
imgLowLvl.imagebits sourceImg = imgLowLvl.fastbits(input);
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(imgLowLvl.imageBitsToBitMap(sourceImg, input.Width, input.Height));
}
//Returns itself in bitmap form. All channels equals density map
public Bitmap toBitMap()
{
Bitmap output = new Bitmap(width, height);
imgLowLvl.imagebits bits = imgLowLvl.fastbits(output);
for (int i = 0; i < bits.a.Length; i++)
{
bits.a[i] = 255;
bits.r[i] = (byte)pixelDensities[i];
bits.g[i] = (byte)pixelDensities[i];
bits.b[i] = (byte)pixelDensities[i];
}
return(imgLowLvl.imageBitsToBitMap(bits, width, height));
}
public static Bitmap greyScaleAverage(Bitmap input)
{
imgLowLvl.imagebits source = imgLowLvl.fastbits(input);
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(imgLowLvl.imageBitsToBitMap(source, input.Width, input.Height));
}
