/// <summary>
/// Initializes "portrait mode" filter.
/// </summary>
/// <param name="strength">Strength</param>
public PortraitModeFilter(double strength)
{
_boxBlur = new BoxBlur();
_alphaChannelFilter = new AlphaChannelFilter();
_merge = new Merge(0, 0, 255);
_strength = strength;
}
/// <summary>
/// Applies a box blur to the image.
/// </summary>
/// <param name="source">The image this method extends.</param>
/// <param name="radius">The 'radius' value representing the size of the area to sample.</param>
/// <param name="rectangle">
/// The <see cref="Rectangle"/> structure that specifies the portion of the image object to alter.
/// </param>
/// <param name="progressHandler">A delegate which is called as progress is made processing the image.</param>
/// <returns>The <see cref="Image"/>.</returns>
public static Image BoxBlur(this Image source, int radius, Rectangle rectangle, ProgressEventHandler progressHandler = null)
{
BoxBlur processor = new BoxBlur(radius);
processor.OnProgress += progressHandler;
try
{
return source.Process(rectangle, processor);
}
finally
{
processor.OnProgress -= progressHandler;
}
}
