public NBitmap LoadBitmapFromStream(Stream stream)
{
return(nativeCodec.LoadBitmapFromStream(stream, source =>
{
NBitmap bitmap = new NBitmap(source.Width, source.Height);
bitmap.WithPinnedPixels(ptr => source.CopyToBitmap(new Rectangle(0, 0, source.Width, source.Height), ptr, 4 * source.Width));
return bitmap;
}));
}
public void CopyToBitmap(Point sourceLocation, NBitmap dest, Point destLocation, Size size)
{
// todo: check other conditions and and test validation
if (size.Width <= 0 || size.Height <= 0)
{
// nothing to copy
return;
}
if (sourceLocation.X < 0 || sourceLocation.Y < 0 || sourceLocation.X + size.Width > Width || sourceLocation.Y + size.Height > Height)
{
throw new ArgumentException($"Source area is outside of the image: ({new Rectangle(sourceLocation, size)}).");
}
dest.WithPinnedPixels(destPtr =>
{
int bitmapOffset = (destLocation.Y * dest.Width + destLocation.X) * 4;
NativeImage.CopyToBitmap(new Rectangle(sourceLocation, size), destPtr + bitmapOffset, dest.Width * 4);
});
}