/// <summary>
/// Highly optimized function that iterates through bitmap pixels with simplicity and supports breaking in the middle of looping.
/// Can most likely be optimized even more with while loop instead of two for loops.
/// </summary>
/// <param name="bitmap"></param>
/// <param name="pixelCallback"></param>
unsafe public void ForeachPixelCheckBreak(Bitmap bitmap, PixelIterationCallbackCheckBreak pixelCallback)
{
BitmapData bmpData = bitmap.LockBits(new Rectangle(Point.Empty, bitmap.Size),
ImageLockMode.ReadWrite, PixelFormat.Format32bppRgb);
byte *pBeg = (byte *)bmpData.Scan0.ToPointer();
bool shouldBreak = false;
for (int y = 0; y < bmpData.Height; ++y)
{
for (int x = 0; x < bmpData.Width; ++x)
{
if (!pixelCallback(x, y, (Pixel *)pBeg))
{
shouldBreak = true;
break;
}
pBeg += sizeof(Pixel);
}
if (shouldBreak)
{
break;
}
}
bitmap.UnlockBits(bmpData);
}
unsafe public void ForeachPixelCheckBreak(Bitmap bitmap, PixelIterationCallbackCheckBreak pixelCallback)
{
BitmapData bmpData = bitmap.LockBits(new Rectangle(Point.Empty, bitmap.Size),
ImageLockMode.ReadWrite, PixelFormat.Format32bppArgb);
byte *pBeg = (byte *)bmpData.Scan0.ToPointer();
bool shouldBreak = false;
for (int y = 0; y < bmpData.Height; ++y)
{
for (int x = 0; x < bmpData.Width; ++x)
{
// 24 / 8 is dependant on the pixelformat
byte *data = pBeg + y * bmpData.Stride + x * 32 / 8;
if (!pixelCallback(x, y, (Pixel *)data))
{
shouldBreak = true;
break;
}
}
if (shouldBreak)
{
break;
}
}
bitmap.UnlockBits(bmpData);
}
