public void PerPixelInArea(Rectangle area, PixelHandler pixelHandler)
{
if (area.X + area.Width > PixelWidth)
{
throw new ArgumentException($"Requested Rectangle {area} does not fit into the bounds of the bitmap width {PixelWidth}");
}
if (area.Y + area.Height > PixelHeight)
{
throw new ArgumentException($"Requested Rectangle {area} does not fit into the bounds of the bitmap height {PixelHeight}");
}
var pixelExtractor = PixelColorExtractor.Create(PixelFormat);
int pixelWidth = area.X;
int pixelHeight = area.Y;
int pixelFinalWidth = (area.X + area.Width);
int byteIndex = PixelXYToByteIndex(area.X, area.Y);
int byteFinalIndex = PixelXYToByteIndex(0, area.Y + area.Height);
int A = 255;
int R = 255;
int G = 255;
int B = 255;
while (byteIndex < byteFinalIndex)
{
pixelExtractor.ExtractPixelBytesToColor(RawPixelBytes, byteIndex, ref A, ref R, ref G, ref B);
pixelHandler?.Invoke(pixelWidth - area.X, pixelHeight - area.Y, A, R, G, B);
pixelWidth++;
if (pixelWidth >= pixelFinalWidth)
{
pixelWidth = area.X;
pixelHeight++;
}
byteIndex = PixelXYToByteIndex(pixelWidth, pixelHeight);
A = 255;
R = 255;
G = 255;
B = 255;
}
}
public static void RegisterPixelColorExtractor(PixelColorExtractor extractor)
{
RegisteredColorExtractors.Remove(extractor.PixelFormat);
RegisteredColorExtractors.Add(extractor.PixelFormat, extractor);
}
