public static void LoadPixels <TPixelFrom, TPixelTo>(
IReadOnlyPixelRows pixels, IPixelBuffer <TPixelTo> destination, Rectangle?sourceRectangle = null)
where TPixelFrom : unmanaged, IPixel
where TPixelTo : unmanaged, IPixel <TPixelTo>
{
if (pixels == null)
{
throw new ArgumentNullException(nameof(pixels));
}
if (destination == null)
{
throw new ArgumentNullException(nameof(destination));
}
var rect = sourceRectangle ?? pixels.GetBounds();
ImagingArgumentGuard.AssertNonEmptyRectangle(rect, nameof(sourceRectangle));
Span <byte> rowByteBuffer = stackalloc byte[4096];
var rowBuffer = MemoryMarshal.Cast <byte, TPixelFrom>(rowByteBuffer);
for (int y = 0; y < rect.Height; y++)
{
var dstRow = destination.GetPixelRowSpan(y);
int offsetX = 0;
do
{
int left = rect.Width - offsetX;
int count = Math.Min(rowBuffer.Length, left);
var slice = rowBuffer.Slice(0, count);
pixels.GetPixelByteRow(rect.X + offsetX, rect.Y + y, MemoryMarshal.AsBytes(slice));
ConvertPixels(slice, dstRow);
dstRow = dstRow[count..];
public static TPixel GetPixel <TPixel>(this IPixelBuffer <TPixel> buffer, int x, int y)
where TPixel : unmanaged, IPixel
{
return(buffer.GetPixelRowSpan(y)[x]);
}
public static Span <TPixel> GetPixelRow <TPixel>(this IPixelBuffer <TPixel> buffer, int y)
where TPixel : unmanaged, IPixel
{
return(buffer.GetPixelRowSpan(y));
}
public static void SetPixel <TPixel>(this IPixelBuffer <TPixel> buffer, int x, int y, TPixel value)
where TPixel : unmanaged, IPixel
{
buffer.GetPixelRowSpan(y)[x] = value;
}