/// <summary>
/// Creates a cropped view of the source context.
/// </summary>
public static IReadOnlyPixelRows Crop(
this IReadOnlyPixelRowsContext context, int x, int y)
{
if (context == null)
{
throw new ArgumentNullException(nameof(context));
}
return(Crop(context, new Rectangle(x, y, context.Width - x, context.Height - y)));
}
/// <summary>
/// Creates a cropped view of the source context.
/// </summary>
public static IReadOnlyPixelRows Crop(
this IReadOnlyPixelRowsContext context, Rectangle sourceRectangle)
{
if (CheckBounds(context, sourceRectangle))
{
return(context);
}
return(new ReadOnlyCropRows(context.Pixels, sourceRectangle));
}
/// <summary>
/// Creates a cropped view of the source context.
/// </summary>
public static IReadOnlyPixelRows <TPixel> Crop <TPixel>(
this IReadOnlyPixelRowsContext <TPixel> context, int x, int y)
where TPixel : unmanaged, IPixel
{
if (context == null)
{
throw new ArgumentNullException(nameof(context));
}
return(Crop(context, new Rectangle(x, y, context.Width - x, context.Height - y)));
}
/// <summary>
/// Creates a cropped view of the source context.
/// </summary>
public static IReadOnlyPixelRows <TPixel> Crop <TPixel>(
this IReadOnlyPixelRowsContext <TPixel> context, Rectangle sourceRectangle)
where TPixel : unmanaged, IPixel
{
if (CheckBounds(context, sourceRectangle))
{
return(context);
}
return(new ReadOnlyCropRows <TPixel>(context.Pixels, sourceRectangle));
}
internal static bool CheckBounds(this IReadOnlyPixelRowsContext context, Rectangle sourceRectangle)
{
if (context == null)
{
throw new ArgumentNullException(nameof(context));
}
if (context.Pixels.GetBounds() == sourceRectangle)
{
return(true);
}
ImagingArgumentGuard.AssertRectangleInSource(context, sourceRectangle, nameof(sourceRectangle));
return(false);
}
/// <summary>
/// Creates a cropped view of the source context.
/// </summary>
public static IReadOnlyPixelRows <TPixel> Crop <TPixel>(
this IReadOnlyPixelRowsContext <TPixel> context, int x, int y, int width, int height)
where TPixel : unmanaged, IPixel
{
return(Crop(context, new Rectangle(x, y, width, height)));
}
/// <summary>
/// Creates a cropped view of the source context.
/// </summary>
public static IReadOnlyPixelRows Crop(
this IReadOnlyPixelRowsContext context, int x, int y, int width, int height)
{
return(Crop(context, new Rectangle(x, y, width, height)));
}
